CN1812890A - Hydraulic transfer method and hydraulic transfer article - Google Patents

Abstract

In order to impart, concurrently with the transfer of a decorative layer, a surface protection function able to mechanically and chemically protect the decorative layer to be hydraulic-transferred of an article, a solventless type ultraviolet-curing resin composition (20A) is applied onto the dried printed pattern (12) of a transfer film (16), an articl (10) is pushed into water along with the transfer film, with the printed pattern activated by a non-solvent activating component in the ultraviolet(uv)-curing resin composition and its adhesion force reproduced, and a ultraviolet ray (22) is applied to the article to which the printed patter, now impregnated and completely integrated with the uv-curing resin composition, has been transferred to thereby cure the uv-curing resin composition.

Description

Water pressure transfer printing method and water pressure transfer printing product

technical field

The present invention relates to a hydraulic transfer method suitable for improving the surface properties of a decorative layer formed by a hydraulic method on an article or a protective layer formed on a decorative layer by a hydraulic transfer method.

Background technique

The hydraulic transfer printing method is a method in which a transfer film containing a water-insoluble printing pattern applied on a water-soluble film is sequentially applied and floated on a water surface, the transfer film is flowed in a transfer bath and Wetting with water and immersing the product (transfer or object to be patterned) into the water in the transfer bath while it contacts the transfer film, whereby the printed pattern of the transfer film is transferred to the surface of the product using water pressure to thereby form a decorative layer. In the case where the printed pattern is a dry pattern, it is required to apply an activator to the printed pattern to activate the ink of the printed pattern to obtain the same ink-wet state (a state where it has adhesiveness) as the state immediately after printing the ink. In order to provide abrasion resistance, weather resistance (including solvent resistance, chemical resistance, etc.) .

In one prior art, this surface protective layer is formed by applying an ultraviolet curing type protective coating material to the decorative layer by spraying after transferring the printed pattern, removing the water-soluble film from the surface of the article and drying the article, and then The ultraviolet curing type protective coating material is irradiated with ultraviolet rays to thereby harden the protective coating material.

However, the method of applying the protective coating material on the article by spraying makes it difficult to apply the surface protective layer uniformly over the entire surface of the article and furthermore, since the protective layer is applied after transferring the printed pattern, washing with water and drying the article, it causes contamination. and dust adhere to the decorative layer formed by transferring the printed pattern. Furthermore, since ultraviolet rays are irradiated onto the protective coating material after the article is taken out from the area where the protective coating material is applied, dirt and dust tend to adhere to the decorative layer, which causes deterioration in surface appearance.

In another prior art, a method is proposed in which hydraulic transfer of a printed pattern and formation of a surface protective layer are performed simultaneously (see the first patent document). This method is a method in which a transfer film containing a protective layer is formed by applying a transparent or translucent surface protective layer of a water-insoluble resin on a water-soluble film and then applying a water-insoluble printing layer on the surface protective layer and the water The transfer film containing the protective layer is transferred under pressure to the article (object to which the pattern is to be transferred).

According to this method, since the water pressure of hydraulic transfer is used to simultaneously transfer the surface protective layer and the printing layer on the water-soluble film on the surface of the product when the product contacts the transfer film, this method can omit applying and printing after the transfer process. The step of hardening the protective coating material, which is required in the first-mentioned conventional technique, avoids the possibility of dust sticking between the decorative layer and the surface protection layer and making the thickness of the surface protection layer uneven .

In this way, this method can be used advantageously, since the surface protection layer is formed simultaneously with the transfer of the printing layer, the operation steps can be simplified and furthermore the appearance of the decoration layer is not deteriorated and the surface protection layer can also provide resistance to the surface of the printing layer of the product. Abrasiveness, so as to protect it physically, this is because the surface protective layer is formed by a protective agent such as butyl methacrylate or ethyl methacrylate, but because the protective agent has low solvent resistance, when the surface protective layer contacts various When the drug surface protective layer is dissolved away, its surface protective function is reduced and thus the surface protective layer disadvantageously has low weather resistance and poor chemical protection.

Another prior art has been proposed which is similar to the second prior art but differs from the latter in that the surface protective layer material of the second prior art is made of a material to be hardened by ultraviolet rays or the like Resin instead (see Patent Document 2).

In the third prior art, since a resin hardened with ultraviolet light or the like is used for the surface protective layer, it takes an effective means to physically and chemically protect the decorative layer, but when the adhesiveness of the printed pattern is restored or reproduced as described later When the printed pattern is the uppermost surface of the transfer film, it has some undesirable disadvantages.

More specifically, an activator or diluent is applied to the printed pattern and to the surface protective layer of the transfer film when transfer printing is performed (refer to the third prior art) to restore the adhesiveness of the printed pattern and the surface protective layer , although it is common in the above-mentioned first to third prior arts, since the activator or diluent restores the adhesiveness of the printed pattern by using an organic solvent contained in the activator or diluent, it is required that the The time for the solvent components to completely volatilize and the drying conditions are considered as process conditions and may provide poor influence on the quality of the water pressure transfer printing article if the solvent components remain in the printed pattern or the surface protective layer. In addition, since the organic solvent is released into the atmosphere or inhaled by the human body during operation, the use of an organic solvent activating a printed pattern or a surface protective layer causes organic air pollution or health damage of workers and this becomes a problem that should be solved immediately.

Since the present inventors tried to directly apply this UV curable coating material for the first prior art, which is also an eco-friendly coating material, they could find the recovery of the temporary adhesion of the ink in the printed pattern of the transfer film, But it has also been found that when trying to work continuously during the hydraulic transfer process it becomes a poor transfer due to reduced adhesion of the printed pattern. It has been found that when the same attempt is made with a UV curable ink, which contains the same UV curable resin composite as the UV curable paint material, but without the colorant, the adhesion of the ink in the printed pattern can be restored and the transfer without loss of adhesion even during the transfer process.

In the case of hydraulic transfer printing, not only the ink in the printed pattern has a restored wet state to restore the adhesion of the ink, but the water-soluble film containing the printed pattern loaded thereon is also absorbed by the water in the transfer bath. Wet, thus requiring that both the printed pattern and the water soluble film readily attach to and around the surface of the article when the article is forced into water. Therefore, the article should be forced under water when obtaining the coordination of the wet state of both the printed image and the water-soluble film and should maintain the adhesiveness of the printed image also suitable for attaching the printed image to the article until the transfer is complete.

The present inventors guess that the difference between these test results is caused by the difference between the composition of the ultraviolet curable paint material and the composition of the ultraviolet curable ink because these products are used differently although they contain the same ultraviolet curable resin composite material. In addition to this, they speculate that one difference is that UV curable coating materials contain low boiling point solvents, but UV curable inks generally contain less solvent, so when UV curable coating materials are applied to printed patterns, The initial adhesion of the printed pattern can be restored by the solvent in the paint material, but the adhesion will be reduced due to the evaporation of the solvent when the transfer is performed and since the UV hardening type ink does not contain solvent, any solvent-free composite material will be usable to restore the printed pattern. The present invention was carried out by repeating various experiments under the above assumptions.

A method is conceived of transferring a surface protective layer on an article by using a transfer film containing a surface protective layer under water pressure, which is formed by applying and drying a surface protective agent such as a protective coating material or an ultraviolet curable resin composite material on a water-soluble film. Transfer film with surface protection layer. However, it is also difficult to form a surface protective layer with all excellent properties of abrasion resistance, heat resistance, and drug resistance by this hydraulic transfer method and when the adhesion of the surface protective layer should be restored, a problem occurs with passing through the work-in-process The same problem applies to the method of decorating articles by transfer printing patterns.

[Patent Document 1] JP4-197699A

[Patent Document 2] JP2003-200698A

The object of the present invention is to provide a hydraulic transfer device suitable for imparting mechanical and chemical surface protection functions, such as abrasion resistance, solvent resistance, drug resistance, weather resistance, etc., to the decorative layer itself on the product while transferring the printed pattern. printing method.

Another object of the present invention is to provide a water pressure transfer printing method suitable for imparting mechanical and chemical surface protection functions, such as abrasion resistance, solvent resistance, drug resistance, weather resistance, etc., to the surface of an article.

Another object of the present invention is to provide a water pressure transfer method suitable for imparting sufficient adhesion to an ink of a printed pattern of a transfer film without any organic solvent, so that air pollution and labor such as those caused by the use of an organic solvent can be avoided. problems of health impairment.

It is a further object of the present invention to provide a hydraulic transfer method suitable for surface treatment without any dirt or dust adhering to the decorative layer on the article.

A further object of the present invention is to provide a hydraulically transferred article obtained by imparting a mechanically and chemically protective surface protective function on the article with a decorative layer while the printed pattern is being transferred.

A further object of the present invention is to provide a water pressure transfer product having the surface protection function of the decorative layer itself given to the product and not containing the dust attached thereto, and without any problems of air pollution and laborer's health damage, so the product has good performance.

A further object of the present invention is to provide hydrostatically transferred articles having excellent surface protection properties.

A further object of the present invention is to provide a water pressure transfer article suitable for use with excellent surface protection properties imparted on the article, and without any problems of air pollution and health damage of laborers.

[Invention Disclosure]

According to a first feature of the present invention, there is provided a hydraulic transfer method suitable for transferring, under water pressure, a printed pattern of a transfer film formed by applying a printed pattern on a water-soluble film on the surface of an article , the method comprising the step of applying an ultraviolet curable resin composite material on a printed pattern of the transfer film, forcing the article to enter underwater together with the transfer film to be in a state where the adhesiveness of the printed pattern is restored by the ultraviolet curable resin composite material , a step of forcibly adhering the printed pattern containing the ultraviolet curable resin composite material to the surface of the article and a step of irradiating ultraviolet rays on the article on which the printed pattern containing the ultraviolet curable resin composite material is transferred, thereby curing the ultraviolet curable Resin composites.

According to a second feature of the present invention, there is provided a hydraulic transfer method suitable for transferring, under water pressure, a printed pattern of a transfer film formed by applying a printed pattern on a water-soluble film, on the surface of an article, The method includes the step of preparing a transfer film by applying a printing pattern on a water-soluble film containing an ultraviolet curable resin composite material preliminarily applied thereon, forcing the product to be bonded to the transfer film in a state in which the adhesiveness of the printing pattern is maintained. a step of entering the film together underwater to forcibly adhere the printed pattern including the ultraviolet curable resin composite material to the surface of the article and a step of irradiating ultraviolet rays on the article on which the printed pattern including the ultraviolet curable resin composite material is transferred, This hardens the ultraviolet curable resin composite material.

Among the features of the present invention, it may be desirable to perform the step of irradiating ultraviolet rays while the water-soluble film of the transfer film is in a state where it is wound around the product, and it is more desirable to perform the step of irradiating the ultraviolet rays while the product is under water or while the product is being removed from the product. After coming out of the water, but before the water-soluble film is removed by washing with water.

According to the first and second features of the present invention, since the printed pattern of the transfer film is transferred to the surface of the product after the ultraviolet curable resin composite material is applied on or under the printed pattern of the transfer film, the printed pattern on the product The printed pattern and the ultraviolet curable resin composite are simultaneously transferred on the surface, which causes omission of the operation of applying a surface protective layer on the decorative layer formed by the printed pattern, and thus hydraulic transfer printing can have a simplified back-end process.

In the case of applying an ultraviolet curable resin composite material on the printed pattern of the transfer film, since the ultraviolet curable resin composite material has an activation function to restore the adhesiveness of the printed pattern in a dry state, it is not necessary to separately activate the printed pattern by an activator. operation, thus simplifying the overall operation schedule including the hydraulic transfer method and the back-end process.

Since the UV curable resin composite material is cured by ultraviolet rays in a state where the UV curable resin composite material permeates the printed pattern and is mixed with the printed pattern, the decorative layer itself has a surface protection function imparted thereto, so the printed pattern has a mechanically and chemically excellent surface performance.

Since the step of irradiating ultraviolet light onto the ultraviolet curable resin composite material is performed under water or even if the product comes out of water before water washing to remove the water-soluble film, dust never adheres to the printed pattern, so that a good finish of the decorative layer can be obtained Exterior.

According to a third feature of the present invention, there is provided a method for forming an ultraviolet-curable surface protective layer on a product, the method comprising the step of coating an ultraviolet-curable protective agent on a water-soluble film to form a surface protective layer transfer film, when When the surface protection layer transfer film floats on the water surface and the water-soluble film becomes wet, the step of transferring the ultraviolet curing type surface protection layer of the surface protection layer transfer film on the product under water pressure and the transfer on the product The step of irradiating ultraviolet rays on the ultraviolet curing type surface protection layer to harden the surface protection layer.

In the third feature of the present invention, the surface protective layer transfer film can be formed by applying an ultraviolet curing type protective agent on the water-soluble film by suitable means such as printing or spraying, but in which the water-soluble film should be used In the case of floating on the water surface of the water pressure transfer printing, an ultraviolet curing type protective agent should be applied to the water-soluble film by spraying. In any case, after coating an ultraviolet curing type protective agent on a water-soluble film to form a surface protective layer thereon, the surface protective layer is subjected to hydraulic transfer while having adhesiveness.

The ultraviolet curable protective agent used in the method according to the third feature of the present invention may be an ultraviolet curable coating agent or an ultraviolet curable ink. Besides, the ultraviolet curable surface protective layer on the water-soluble film may have a concavo-convex pattern for decoration formed therein by suitable means. In the case where the article has a decoration applied by hydraulic transfer printing, it is required that the surface protective layer be transparent or translucent.

According to the third feature of the present invention, it is possible to provide a surface protective layer excellent not only in mechanical surface properties such as abrasion resistance but also in chemical surface properties such as chemical resistance by using hydraulic transfer technology.

Particularly in this method, since the water-soluble film on which the ultraviolet-curable protective agent is coated is in the form of a plane, the ultraviolet-curable protective agent can be uniformly coated on the water-soluble film by gravure printing, screen-stencil, or the like. on the upper surface of the membrane. The surface protective layer transferred onto the article from the surface protective layer transfer film thus formed can be uniformly applied on all surfaces of the article, so that a product of good product quality can be obtained from the surface protective layer which never deteriorates the article Appearance.

Since the hydraulic transfer of the surface protective layer can be performed after the hydraulic transfer of the printed pattern, for example, the surface protective layer can be formed inexpensively by simplifying the operation process without using a conventional separate surface coating process.

Furthermore, since the ultraviolet curable surface protective layer can be hardened by irradiating ultraviolet rays thereon immediately after hydraulic transfer, foreign matter such as dirt or dust never adheres to the surface protective layer, and thus a product with good appearance can be obtained.

According to a fourth feature of the present invention, there is provided a hydraulic transfer method suitable for transferring a printed pattern of a transfer film formed by applying a printed pattern on a water-soluble film on the surface of an article, the method comprising: A step of applying a solvent-free ultraviolet curable resin composite on the printed pattern of the transfer film to restore the adhesion of the printed pattern by a solvent-free activator of the solvent-free ultraviolet curable resin composite, forcing the article to enter water together with the transfer film The steps of forcibly adhering the printed pattern containing the ultraviolet curable resin composite material to the surface of the product and the step of irradiating ultraviolet rays on the product on which the printed pattern containing the ultraviolet curable resin composite material is transferred, thereby The ultraviolet curable resin composite material is hardened in a state where the ultraviolet curable resin is completely combined with the printed pattern to form a decorative layer.

According to a fifth feature of the present invention, there is provided a hydraulic transfer method suitable for transferring a printed pattern of a decorative transfer film formed by applying the printed pattern on a water-soluble film on the surface of an article , the method comprising the step of applying a solventless ultraviolet curable resin composite material on a printed pattern of the decorative transfer film to restore the adhesiveness of the printed pattern by a solventless activated component of the solventless ultraviolet curable resin composite material, A step of forcing the article to be underwater together with a decorative transfer film to forcibly adhere a printed pattern containing an ultraviolet curable resin composite material to the surface of the article, a step of irradiating ultraviolet rays on the article on which the pattern containing ultraviolet curable resin is transferred A printed pattern of a resin composite material, whereby the ultraviolet curable resin composite material is hardened in a state where the ultraviolet curable resin is completely combined with the printed pattern to form a decorative layer and on a product containing the decorative layer formed thereon, A step of transferring an ultraviolet curable resin composite material layer of a surface finish transfer film, which is formed by applying a transparent ultraviolet curable resin composite material on a water-soluble film in a monochromatic state, thereby transferring from the surface finish The film's UV-curable resin composite forms the surface coating.

In the fourth and fifth features of the present invention, the solvent-free activating component of the ultraviolet curable resin composite material for restoring the adhesiveness of the printed pattern may include a photopolymerizable monomer. It is preferable to irradiate the ultraviolet ray while winding the water-soluble film of the decorative transfer film around the product. In addition, ultraviolet rays and ultraviolet curing resin composite materials can be replaced by electron wires and electron wire curing resin composite materials.

According to the fourth and fifth features of the present invention, the adhesiveness of the printed pattern can be fully restored by the solvent-free activating component of the ultraviolet curable resin composite material, which can be typically and preferably a photopolymerizable monomer Adhesion is made to have the same degree as that immediately after printing the printing pattern on the water-soluble film. Since the recovery of adhesiveness can be performed without using any organic solvent, there is no problem of air pollution or worker's health damage due to the organic solvent used.

Due to the solvent-free activating group for curing the ultraviolet curable resin composite material in a state where the solvent-free activating component penetrates the ink of the printed pattern to be mixed with the ink and thus in a state where the solvent-free ultraviolet curable resin composite material is completely united with the printed pattern Such as photopolymerizable monomers, the decorative layer on the product itself has mechanical and chemical surface protection functions such as abrasion resistance, solvent resistance, drug resistance and weather resistance. This is the same effect as the first and second features of the present invention have.

If the surface protection function given to the decorative layer such as solvent resistance is sufficient for the product (product), the decorative layer itself can be provided as the surface layer of the product, but if higher surface protection is required, it can be obtained by using hydraulic transfer printing technology A surface coating of a transparent ultraviolet curable resin composite material applied on a water-soluble film in a monochrome state is formed on the article by the method described in the fifth feature hereinafter. Such surface coatings are expected to be applied to increase the thickness of the surface appearance of the article and to further improve mechanical and chemical surface protection.

Since the step of irradiating ultraviolet light onto the ultraviolet curable resin composite material is performed under water or even if the product comes out of water before water washing to remove the water-soluble film, there is substantially no chance in which dust adheres to the printed pattern to improve the excellent product rate, An article having a good appearance of the decorative layer can thus be obtained.

According to the sixth feature of the present invention, there is provided a hydraulic transfer printing method suitable for transferring a printed pattern and a surface finish protective layer of a transfer film on the surface of a product, the transfer film being passed on a water-soluble film in sequence Applying a surface finish protective layer and printing pattern formation, the method comprising applying a solventless ultraviolet curable resin composite material on a printed pattern of a transfer film to recover the printed pattern from a solventless activated component of the solventless ultraviolet curable resin composite material the step of forcing the product to be underwater together with the transfer film to force the printed pattern including the ultraviolet curable resin composite material to adhere to the surface of the product, the step of irradiating ultraviolet rays on the product, and on the product Transferred with a printed pattern comprising an ultraviolet curable resin composite material and a surface finish protective layer on the printed pattern, whereby ultraviolet rays are cured in a state in which the ultraviolet curable resin composite material is completely combined with the printed pattern and with at least a part of the surface finish protective layer Hardening type resin composite material.

In the sixth feature of the present invention, the solvent-free activating component of the ultraviolet curable resin composite for restoring the adhesion of the printed pattern may include photopolymerization in the same manner as the third and fourth features of the present invention monomer. It is preferable to irradiate the ultraviolet ray while winding the water-soluble film of the transfer film around the product. In addition, ultraviolet rays and ultraviolet curing resin composite materials can be replaced by electron wires and electron wire curing resin composite materials.

In the sixth feature of the present invention, the surface finish protective layer may be a transparent ink or an ultraviolet curable resin composite material and preferably a solventless type ultraviolet curable resin composite material.

Since the sixth feature of the present invention is to restore the adhesiveness of the printed pattern by the solvent-free activating component of the solvent-free UV-curable resin composite material, there is no problem of air pollution or worker's health damage due to the organic solvent used. Also, since the ultraviolet curable resin composite and the printed pattern are hardened while they are fully united with each other, the decorative layer itself on the product has mechanical and chemical surface protection functions such as abrasion resistance, solvent resistance, drug resistance and weather resistance etc.

The surface of the decorative layer may be protected by the surface coating transferred on the decorative layer under water pressure while the surface coating is transferred together with the surface protective function imparted to the decorative layer such as solvent resistance, etc., other than Since a part of the ultraviolet curable resin composite material used to restore the adhesion also penetrates the surface finish protective layer, the adhesion properties of the surface coating and the decorative layer can be improved. In particular, since the surface coating is an ultraviolet curable resin composite material, the mechanical and chemical surface protection can be enhanced by the combination of the ultraviolet curable resin composite material fully integrated with the decorative layer and the surface coating ultraviolet curable resin composite material, which is fully integrated with the decorative layer The composite material is applied for the recovery of its adhesion. Surface coating Depth to which the surface appearance of an article is imparted.

Since ultraviolet rays can be irradiated on the ultraviolet curable resin composite material and the surface coating ultraviolet curable resin composite material for restoring adhesion before water washing to remove the water-soluble film even if the product comes out of water, there is basically no dust therein The chance of sticking to the printed pattern improves the excellent article rate, so an article with a good appearance of the decorative layer can be obtained.

According to the seventh feature of the present invention, there is provided a water pressure transfer method suitable for transferring a surface protective layer of a surface protective layer transfer film on the surface of a product by passing the surface protective layer transfer film on a water-soluble film Applying and drying surface protection layer formation, the method includes the step of applying ultraviolet curing resin composite material on the surface protection layer of the surface protection layer transfer film to restore the adhesion of the surface protection layer, forcing the article to enter water together with the transfer film With the steps of forcibly adhering the surface protective layer including the ultraviolet curable resin composite material to the surface of the article and the step of irradiating ultraviolet rays on the article on which the surface protective layer including the ultraviolet curable resin composite material is transferred, The ultraviolet curable resin composite material is thereby cured in a state in which the ultraviolet curable resin material is completely united with the surface protective layer.

In the seventh feature of the present invention, the surface protecting agent may be a transparent ink or a paint material to be hardened by drying.

According to an eighth feature of the present invention, there is provided a hydraulically transferred article obtained by any one of the hydraulic transfer methods according to the first to seventh features of the present invention.

The decorative layer of the water pressure transfer product and the surface protection layer of the water pressure transfer product obtained by the water pressure transfer method according to the first, second and fourth to sixth features of the present invention may preferably be suitable for was never degraded by the solvent resistance test in which ten stacks of gauze containing xylene were rubbed back and forth eight times while rubbing on the decorative layer.

[Brief description of the drawings]

FIG. 1 is an outline view in which a hydraulic transfer method used in the present invention is briefly explained.

Fig. 2 illustrates the water pressure transfer method according to the first form of the present invention in the order of steps, Fig. 2A is a cross-sectional view of a transfer film, and Fig. 2B is an ultraviolet curable type in which will be used as an example of an ultraviolet curable resin composite material A cross-sectional view of the transfer film in a state where the coating material is applied on the transfer film, FIG. 2C is a cross-sectional view of the transfer film in a state where the transfer film floats on the water surface, and FIG. 2D is to be placed on it. A cross-sectional view of the transfer film in a state immediately before the article on which the printed pattern is transferred is forced underwater, FIG. 2E is a cross-section of a state in which ultraviolet rays are irradiated on the article after hydraulic transfer, and FIG. A cross-sectional view of a state where the water-soluble film is washed and FIG. 2G is a cross-sectional view of a state where the surface of the article is dried.

Figure 3 is an enlarged cross-sectional view of a product obtained by the method of the invention.

4 illustrates a water pressure transfer method according to a second form of the present invention, and FIG. 4A is a cross-sectional view of a state where an ultraviolet-curable type paint material is applied on a water-soluble film, which should obtain a transfer film and FIG. 4B is a view in which A cross-sectional view of a state in which a printing pattern is printed on the film of FIG. 4A .

Fig. 5 illustrates the water pressure transfer printing method according to the third form of the present invention in the order of steps, Fig. 5A is a cross-sectional view of a transfer film containing an ultraviolet curable surface protective layer applied thereon by printing, and Fig. 5B is a view in which A cross-sectional view of a state where a transfer film with a surface protection layer applied thereon is floating on a water surface, FIG. 5C is a state where an article to which a printed pattern is to be transferred under water pressure is forced halfway under water 5D is a cross-sectional view of a state in which the entire product is immersed in water after the state of FIG. 5C , and FIG. 5E is a cross-sectional view of a state in which ultraviolet rays are irradiated on the product after hydraulic transfer, and FIG. 5F is a cross-sectional view of a state in which water washes the water-soluble film and FIG. 5G is a cross-sectional view of a state in which the surface of an article is dried.

FIG. 6 is an enlarged cross-sectional view of a product obtained by the method of FIG. 5 .

7 is a cross-sectional view of a surface protection layer transfer film used in the method of FIG. 5 but having a different form.

8 illustrates a water pressure transfer method according to a fourth form of the present invention in the order of steps, FIG. 8A is a cross-sectional view of a transfer film, and FIG. 8B is a state in which a solvent-free ultraviolet curable resin composite material is applied on the transfer film. 8C is a cross-sectional view of the state where the transfer film of FIG. 8B is floating on the water surface, and FIG. 8D is a product immediately before the product to which the printing pattern is transferred under water pressure is forced into the water. A cross-sectional view of the state, FIG. 8E is a cross-sectional view of a state where ultraviolet rays are irradiated on a product after hydraulic transfer, FIG. 8F is a cross-sectional view of a state where water washes a water-soluble film and FIG. 8G is a dry product surface. A cross-sectional view of the state.

FIG. 9 is an enlarged cross-sectional view of a product obtained by the method of FIG. 8 .

Figure 10 partially illustrates the steps of applying a surface coating on the product of Figure 9 using hydraulic transfer printing techniques by a fifth form of the invention, Figure 10A being a cross-sectional view of a transfer film for surface coating and Figure 10B being A cross-sectional view of the state of the article of FIG. 3 just before it is forced underwater to apply a topcoat to the article using the transfer film of FIG. 10A .

FIG. 11 is an enlarged cross-sectional view of a product containing a surface coating obtained by the method of FIG. 10 .

Fig. 12 is an outline view in which a hydraulic transfer method according to a sixth form of the present invention is briefly explained.

13 illustrates the hydraulic transfer method of FIG. 12 in the order of steps, FIG. 13A is a cross-sectional view of the transfer film, FIG. 13B is a cross-sectional view of a state where an ultraviolet curable resin composite material is applied on the transfer film, and FIG. 13C is a cross-sectional view of the state where the transfer film of FIG. 13B is floating on the water surface, FIG. 13D is a cross-sectional view of the state before the product on which the printing pattern is to be transferred is forced into the water, and FIG. 13E is A cross-sectional view of a state where ultraviolet rays are irradiated on a product after hydraulic transfer, FIG. 13F is a cross-sectional view of a state where a water-soluble film is washed with water and FIG. 13G is a cross-sectional view of a state where the surface of the product is dried.

FIG. 14 is an enlarged cross-sectional view of a product obtained by the method of FIG. 13 .

Fig. 15 illustrates the hydraulic pressure transfer method for the surface protection layer according to the seventh feature of the present invention in step order, Fig. 15A is a cross-sectional view of the surface protection layer transfer film, and Fig. 15B is the surface of the transfer film in which 15C is a cross-sectional view of a state in which the transfer film of FIG. 15B is floating on the water surface, and FIG. 15D is to be transferred thereon under water pressure. A cross-sectional view of a non-decorative product printed with a surface protection layer just before it is forced into water, FIG. 15E is a cross-sectional view of a state in which ultraviolet rays are irradiated on the product after water pressure transfer, and FIG. 15F is a state in which water is washed and water-soluble Figure 15G is a cross-sectional view of a state of a dry film and Figure 15G is a cross-sectional view of a state of a dry product surface.

FIG. 16 is an enlarged cross-sectional view of a product obtained by the method of FIG. 15 .

Figure 17 is an enlarged cross-sectional view of a product obtained by transferring a surface protection layer on a decorated article by the same method as in Figure 15 but under water pressure.

[Best Mode of Embodiment of the Invention]

Embodiments of the present invention will be described with reference to the accompanying drawings, and Fig. 1 briefly illustrates a hydraulic transfer method according to a first form of the present invention. This hydraulic transfer method is a method in which a transfer film 16 including a water-soluble film 14 containing a printing pattern applied thereon floats on water 18 in a transfer bath not shown 12 and the direction of the printed pattern is upward, the product 10 on which the printed pattern is to be transferred is forced to pass through the transfer film 16 into the water, thus completing the hydraulic transfer.

The water-soluble film 14 is formed of a water-soluble material containing, for example, polyvinyl alcohol as a main component, which becomes wet and softens by absorbing water. This water-soluble film 14 softens when it comes into contact with water in the transfer bath and wraps around the article 10 to be decorated, so that hydraulic transfer can be performed. The printed pattern 12 may be applied on the water-soluble film 14 by gravure printing or the like in the case of usually hydraulic transfer. It should be noted that the meaning indicated by "printed pattern" 12 includes a planar printed pattern (printed pattern not containing a pattern) in addition to a printed pattern initially having a pattern.

The method according to the first form of the invention is to apply or coat an ultraviolet curable resin composite onto the printed pattern 12 of the transfer film 16 to penetrate the printed pattern 12 before transferring the printed pattern on the article under water pressure. Although in the embodiments described below, an ultraviolet curable coating material may be used as the ultraviolet curable resin composite material, an ultraviolet curable ink may be used. An example of specific steps of the hydraulic transfer method of the present invention is illustrated in FIG. 2 . In the form of FIG. 2, the operation starts from a state in which the printed pattern 12 printed on the water-soluble film 14 is in a dry condition (see FIG. 2A). Although not shown, actually, the transfer film 16 is in the form of a roll obtained by previously printing the printing pattern 12 and drying the printing pattern 12 on the elongated water-soluble film 14 . The transfer film 16 may be cut for use after being continuously fed from a film roll or passed therethrough.

In the form of FIG. 2, an ultraviolet curable coating material 20 is applied on the dry printed pattern 12 of the transfer film 16 of FIG. In the cohesive state of the printed pattern 12, the transfer film 16 is floated on the water 18 in the transfer bath (see FIG. 2C ), after which the article 10 is forced underwater together with the transfer film 16 to forcibly contain The printed pattern 12 of the ultraviolet curable paint material 20 faces the surface 10S of the product (see FIG. 2D ) and irradiates ultraviolet rays 22 on the product 10, and the printed pattern 12 comprising the ultraviolet curable paint material 20 is transferred on the product 10, so The ultraviolet curable paint material 20 is cured (see FIG. 2E ). Although not shown in the drawings, the article 10 may be forced underwater while the article 10 is being conveyed by an inverted triangle conveyor or supported by a robotic arm. In some cases, the step of applying the UV-curable paint material 20 on the printed pattern 12 (see FIG. 2B ) and the step of floating the transfer film 16 on the water (see FIG. 2C ) can be reversed, so that the ultraviolet ray can be applied by spraying. The hardening type paint material 20 is applied on the printed pattern of the transfer film 16 floating on the water to restore the adhesiveness of the printed pattern 12 .

The ultraviolet curable coating material 20 is an ultraviolet curable resin composite material for appropriately activating the dry printed pattern 12 of the transfer film 16 and this material may include components having the following composition.

(1) Oligomer 30-50wt%

(2) Multifunctional acrylate 10-30wt%

(3) Monofunctional acrylate 10-40wt%

(4) Non-reactive additives 1-20wt%

(5) Photopolymerization initiator 0.5-5wt%

(6) Solvent balance

Oligomers are components that affect the adhesion and physical properties of paint materials and can be used alone as one of acrylic oligomers, polyester oligomers, epoxy acrylate oligomers, and urethane acrylate oligomers or they can be used in any combination according to the desired properties.

The monofunctional acrylate monomer is the reactant diluent and the function of this substance is to activate the dried printed pattern 12 to restore its adhesion. The multifunctional acrylate monomer is a bridging component and imparts chemically and mechanically excellent properties to the coating material after its ultraviolet curing to provide weather resistance and strength to the printed pattern 12 and also has an additional function of adopting the same function as the monofunctional acrylate The monomer activates the dried printed pattern 12 to restore its adhesion in the same way.

Use polyacrylates such as polymethylacrylate to reduce shrinkage of the coating caused by bridging components. If the shrinkage force of the coating becomes high, the adhesion of the coating decreases, and polyacrylates are useful in preventing this.

Conventional acetophenone, benzophenone, etc. can be used as photopolymerization initiators and ethyl acetate, butyl acetate, propylene glycol monomethyl alcohol acetate, cyclohexanone (cyclohexanone), toluene, xylene, etc. can be used as solvent.

Although the step of applying the ultraviolet-curable coating material 20 may be performed by any one of gravure roll, wire-wound rod coating, and spray coating, since the spray application process consumes a large amount of coating material, the gravure roll application process or wound coating may be preferred. A wire bar application process is used to apply the coating material.

When the ultraviolet curable coating material 20 is applied on the printed pattern 12, the dried printed pattern 12 is activated by the monofunctional acrylate monomer or polyfunctional acrylate monomer in the ultraviolet curable coating material 20 and possibly In the case of activation by a solvent etc., thus restoring the adhesion of the ink. Accordingly, the ultraviolet curable coating material 20 may have the same function as an activator generally applied on dry ink and thus omit application of the activator.

When the ultraviolet curable paint material 20 is applied on the printed pattern 12, the paint material composition penetrates into the printed pattern 12 and thus the ink composition and the paint material composition are mixed with each other to combine them. Therefore, when ultraviolet rays 22 are irradiated to harden the paint material composition after transferring the print pattern 12 mixed with the paint material composition to the product 10, mechanical strength and chemical properties such as heat resistance and weather resistance are imparted to the print pattern 12. Although FIGS. 2B and 2C do not illustrate the state in which the ink components of the printed pattern 12 and the UV-curable coating material are fully combined, if these figures attempt to show such a state, it is impossible to distinguish the two from each other, but it should be understood that the layers are used for convenience. status shows them.

After ultraviolet light 22 is irradiated onto the article containing the printed pattern 20 transferred thereto, water spray 24 is sprayed onto the water-soluble film 14 of the transfer film 16 to thereby wash the water-soluble film 14, as shown in FIG. 2F , thus removing the water-soluble film 14 from the surface of the article 10. Thereafter, as shown in FIG. 2G, the hot air 26 is irradiated on the surface of the product 10, and the printed pattern 12 comprising the ultraviolet curable paint material 20 is adhered on the product 10 to dry the surface of the product 10, thus completing the process including the decoration. 10' of layer 30 (cf. Fig. 3).

The printed pattern 12 comprising the UV-curable coating material 20 is transferred onto the product 10 by irradiating ultraviolet light 22 while the water-soluble film 14 of the transfer film 16 is wound around the product 10, preferably while the product 10 is still underwater. Irradiation is performed thereafter or before water washing and removal of the water-soluble film 14 while it comes out of the water. The ultraviolet ray 22 is irradiated by conventional ultraviolet curing equipment including a light source lamp such as a high-pressure mercury lamp or a metal halide lamp and an irradiation machine (lamp house). Since ultraviolet rays can penetrate underwater, ultraviolet rays 22 can be irradiated onto the article 10 while the article 10 is underwater.

In this way, ultraviolet rays 22 are irradiated while the water-soluble film 14 is wound around the product, so that any dirt, etc. cannot adhere to the product before the printed pattern 12 is completely dried, and the possibility of dirt adhesion can be reduced, which This is because the printed pattern 12 is already hardened when the water-soluble film 14 is removed, so the decorative layer 30 with a good appearance can be easily obtained. In the case where irradiation of ultraviolet rays 22 is performed in an environment not containing dust or dirt such as a tunnel-like clean room, irradiation of ultraviolet rays 22 may be performed after water-washing water-soluble film 14 from article 10 .

(implementation 1)

In a specific embodiment according to the first form of the present invention, the substance constituting the main component of FUJIHARD HH9986 U-N7 purchased from FUJIKURA KASEI CO., LTD., Japan is used as the ultraviolet curable coating material 20 and the use of FIGS. 2A to 2G The process is performed in the sequence of steps shown. Immediately before the transfer film 16 is introduced into the transfer bath, an ultraviolet curable coating material 20 is applied or coated onto the printed pattern 12 of the transfer film 16 by a gravure application process. In this way, the transfer film 16 on which the coating material is applied is floated on the water surface of the transfer bath as shown in FIG. , pushing the article 10 through the transfer film 16 into the water. After the article 10 was taken out of the water after the transfer, ultraviolet rays were irradiated on the article, after which the article was cleaned with water and dried to obtain the hydraulically transferred article 10' shown in FIG.

When the decorative layer of the thus-obtained hydraulic transfer article (A) was tested by the cross-cut tape adhesion test method (measured 100 times with a 1 mm incision), it was confirmed that the article (A) had and did not contain a surface coating. The print (B) had the same adhesion as the hydrotransfer (C) containing a conventional acrylic surface coating applied on the decorative layer. A solvent resistance test was performed on the product by reciprocating wiping 30 times with a rag containing isopropyl alcohol under a predetermined load. Transfer article (C). Of course, the hydrotransfer article (B) which does not contain a topcoat has no solvent resistance. Therefore, it is noted that the first form of hydraulically transferred article according to the embodiment of the present invention has weather resistance and high mechanical strength, which are achieved by the ultraviolet curable paint material penetrating into the decorative layer.

In the first form of embodiment shown in FIG. 2, the transfer operation is carried out using a transfer film 16 containing the dry printed pattern 12, but in the second form of embodiment shown in FIG. 4, the transfer operation It can be carried out by applying or coating an ultraviolet curable coating material 20 onto the water-soluble film 14, thereafter printing the printing pattern 12 on the coating material 20 by a non-contact printing method such as an inkjet system and before the printing pattern 12 is dried. The transfer film 16 is introduced into the transfer bath.

In this case, since the ink component of the printed pattern 12 maintains adhesiveness, it is not required that the ultraviolet curable paint material 20 has a function of activating the ink, but by printing the printed pattern 12 on the paint material 20, the paint material 20 penetrates into The ink composition, thus the ultraviolet curable coating material 20 and the ink composition are fully combined in the same manner as in the form of the embodiment of FIG.

According to the first and second forms of the embodiment of the present invention, since the hydraulic transfer of the surface of the product 10 is performed in a state where the ultraviolet curable coating material 20 is applied on or under the printed pattern 12 of the transfer film 16, Printing, so the printing pattern 12 and the ultraviolet curable resin composite material are simultaneously transferred on the surface of the product, and it can be noted that the operation of applying a surface protective layer to the decorative layer formed by the printing pattern 12 is not required, so the post-process of hydraulic transfer printing get simplified.

Since the UV curable coating material 20 has an activation function to restore the adhesiveness of the dried printed pattern 12, a separate operation is not required to activate the printed pattern 12 with an activator, so the overall process and possible post-processing of the water pressure transfer becomes simpler.

Since the ultraviolet curable paint material 20 is cured by ultraviolet rays in a state where the ultraviolet curable paint material 20 penetrates into the inside of the printed pattern 12 and is mixed with the printed pattern 12, surface protection is imparted to the decorative layer itself of the product and thus printed The pattern 12 has mechanically and chemically excellent surface properties.

Since the step of irradiating ultraviolet rays is performed under water or even if the product comes out of water before washing with water and removing the water-soluble film, dust, dirt, etc. do not adhere to the printed pattern 12, so a decorative layer with good appearance can be obtained.

The same effect can be achieved even if the ultraviolet curable paint material 20 can be replaced by the already described ultraviolet curable ink.

A third form of the hydraulic transfer method (method of forming a surface protective layer) according to an embodiment of the present invention is shown in FIG. 5 . Although this method is typically applied on the surface of the article decorated by the hydraulic transfer printing of Figure 2, to protect the surface of the decorated article 10, of course this method of the present invention can be similarly used on articles decorated by other suitable measures On the surface.

In this method of the present invention, as shown in FIG. Composite material) forms an ultraviolet curable surface protection layer 240 (see FIG. 5A ). Like the water-soluble film 14 used for the transfer film 16 of the first form of embodiment, the water-soluble film 214 may include a water-soluble material containing a main component such as polyvinyl alcohol, which becomes wet and soften.

In the case where the article 10 is decorated by water pressure transfer or the like, the ultraviolet curable protective agent is an ultraviolet curable clear paint material and this paint material may include a composition having the following composition, and since this is different from that used in the first and second embodiments The second form of ultraviolet curable paint material is the same composition, so detailed description is omitted.

(1) Oligomer 30-50wt%

(2) Multifunctional acrylate 10-30wt%

(3) Monofunctional acrylate 10-40wt%

(4) Non-reactive additives 1-20wt%

(5) Photopolymerization initiator 0.5-5wt%

(6) Solvent balance

In this way, after the surface protective layer transfer film 216 is formed, this transfer film 216 floats on the surface of the water 218 in the transfer bath with the surface protective layer 240 oriented (see FIG. 5B ). When the water soluble film 214 of the transfer film 216 is completely wetted with water 218, the article 10 containing the surface to be protected is forced through the surface protection transfer film 216 into the water 218 to perform a UV curable surface on the article 10 Hydrostatic transfer of protective layer 240 (see Figures 5C and 5D).

Thereafter, ultraviolet rays 222 are irradiated on the ultraviolet curable surface protective layer 240 transferred onto the article 10 to harden the surface protective layer 240 (see FIG. 5E ). The water soluble film 214 is removed by spraying wash water 224 onto the surface of the article 10 (see FIG. 5F ). Finally, hot air 226 is blown onto the surface of the product 10 to dry it (see FIG. 5G ), thus completing the product 210' (see FIG. 6 ) protected by the surface protection layer 240'. In FIGS. 5D and 5E , although they are distinguished from each other, the water-soluble film 214 and the surface protective layer 240 of the transfer film 216 are not indicated.

As in FIG. 2 for hydraulic transfer of decoration, it is desirable to perform irradiation of ultraviolet rays 220 while the water-soluble film 214 of the transfer film 216 is wrapped around the article 10 . This can harden the ultraviolet curable paint material without adhering dust, dirt, etc. to the surface protection layer 240 of the ultraviolet curable paint material and thus can form a surface with a good appearance that does not contain dust, dirt, etc. adhering thereto. Protective layer 240'.

(implementation 2)

In a specific embodiment according to the third form of the present invention, the substance constituting the main component of FUJIHARD HH9986 U-N7 purchased from FUJIKURA KASEI CO., LTD., Japan is used as an ultraviolet-curable transparent paint material and using FIGS. 5A to 5F The process is carried out in the sequence of steps shown. An ultraviolet curable clear coating material is applied on the water-soluble film 16 by a gravure printing process immediately before the transfer film is introduced into the transfer bath. In this way, the transfer film containing the surface protection layer formed by applying the coating material floats on the water surface of the transfer bath with the surface protection layer facing upwards and thereafter the article is pushed through the transfer film into the water. After the surface protection layer is transferred on the surface of the product, the product is taken out of water, ultraviolet rays are irradiated on the surface protection layer, and finally the product is washed with water and dried to obtain a product 210' containing a UV-curable surface protection layer 214' formed thereon. ,As shown in Figure 6.

When the adhesion of the surface protective layer of the water pressure transfer article (product) (D) protected by the transparent surface protective layer thus obtained is tested by the cross-cut tape adhesion test method (measured 100 times with a 1 mm incision), it is confirmed that The article (D) has the same adhesion as the hydrotransfer article (B) without the surface coating and the hydrotransfer article (C) with the conventional acrylic resin applied on the decorative layer. The solvent resistance test was carried out on the product by reciprocating wiping 30 times with a rag containing isopropanol under a predetermined load, and it was confirmed that the solvent resistance of the water pressure transfer product (D) was significantly better than that containing the surface coating formed thereon. A conventional hydrotransfer article of layer (C). Of course, the hydrotransfer article (B) which does not contain a topcoat has no solvent resistance. Therefore, it is noted that the hydraulically transferred article according to the embodiment of the present invention has good weather resistance and high mechanical strength, which are achieved by the ultraviolet curable coating material.

In the above forms of embodiment, although a transparent paint material is used as an ultraviolet curable type protective agent, a translucent paint material can be used and an article can be decorated by the surface protective layer itself formed by using an ultraviolet curable type ink instead of a paint material . In this way, if a UV curable ink is used, the surface protective layer results in both decorative and surface protective functions.

As shown in FIG. 7, after applying an ultraviolet curable protective agent on the water-soluble film 214 to form a surface protection layer 240, a suitable concave-convex pattern 240a, such as a particle pattern and Other patterns.

A fourth form of a hydraulic transfer method according to an embodiment of the present invention is shown in FIG. 8 . This method is the same as the method according to the first form of the embodiment, except that the material to be applied or coated on the printed pattern 12 of the transfer film 16 is not the ultraviolet curable paint material 20 but the solventless ultraviolet curable resin composite material 20A Other than this can be done in the same manner as in the first mode of embodiment (see Figs. 8A to 8G).

"Ultraviolet curable resin" refers to a resin that is cured by the chemical action of ultraviolet light in a relatively short period of time and takes the form of ultraviolet curable coating material, ultraviolet curable ink, ultraviolet curable adhesive, etc. according to its use. These reagents include (1) a photopolymerizable prepolymer, (2) a photopolymerizable monomer and (3) a photo (optical) initiator as indispensable components. Substances on the market as the first form of ultraviolet curable paint materials used in the embodiment of the present invention generally contain solvents such as diluents added thereto and although some ultraviolet curable inks contain solvents such as alcohol added thereto, generally ultraviolet rays Hardening inks do not contain solvents added thereto and are blended with photopolymerizable monomers to serve as diluents. "Ultraviolet curable resin composite material", which is the object of the fourth form of the embodiment of the present invention, basically blends with photopolymerizable prepolymer, photopolymerizable monomer and photopolymerization initiator regardless of the use form of ultraviolet curable resin and does not add Any solvent also has a liquid form before being hardened by ultraviolet radiation.

Substances represented by "ultraviolet curable resin composite" to be used in the fourth form of the embodiment of the present invention exclude ultraviolet curable resin composites in which solvents are contained and are limited to solventless ultraviolet curable resin composites not containing added solvents. This is because it is the solvent-free active component in the solvent-free ultraviolet curable resin composite, which is typically a photopolymerizable monomer, that restores the print pattern adhesion of the transfer film. The ultraviolet curable resin composite material suitable for use in the fourth form of embodiment of the present invention includes components having the following composition;

(1) Oligomer (photopolymerized prepolymer) 30-50wt%

(2) Multifunctional acrylate

(photopolymerizable monomer) 10-30wt%

(3) Monofunctional acrylate

(photopolymerizable monomer) 10-40wt%

(4) Photopolymerization initiator 0.5-5wt%

(5) Non-reactive additives 1-20wt%

Photopolymerizable prepolymers are polymers that can be further hardened by photochemical action and are called "photopolymerizable unsaturated polymers", "base resins" or "photopolymerizable oligomers". As a coating film after hardening, this prepolymer Polymers are the basic components that affect many important physical properties and acrylic oligomers, polyester oligomers, epoxy acrylate oligomers and urethane acrylate oligomers can be used independently or in any combination. Although photopolymerization prepolymer The degree of polymerization of the compound is not as high as that of the final polymer, but it is not a monomer and is polymerized to a certain extent so that it has a suitable viscosity and therefore requires the use of a diluent in view of the handling effect when it is used.

The photopolymerizable monomer acts as a diluent for the photopolymerizable prepolymer while maintaining the practicality of the resin composite operation and participates in the polymerization itself. There are monofunctional monomers containing a single functional group and polyfunctional monomers containing two or more functional groups. The monofunctional monomer is used to improve the adhesion to the article and impart softness to the coating film after hardening while the multifunctional monomer is used as a bridging agent to bridge the prepolymer molecules. For example, polyacrylates such as polymethylacrylate are used to alleviate shrinkage of the coated film caused by bridging. If the shrinkage force of the coating film becomes high, the adhesion of the coating film will be reduced, but polyacrylate is useful for preventing this. These photopolymerizable monomers serve as diluents for adjusting the viscosity of ultraviolet curable resin composites and also as functional ingredients (activating ingredients) for restoring the adhesion of dried printed patterns.

Photopolymerization initiators are used to absorb ultraviolet rays to initiate polymerization reactions and are also called "photopolymerization initiators". When the ultraviolet curing reaction is a radical reaction, acetophenone, benzophenone, etc. can be used, and when the ultraviolet curing reaction is an ion reaction, a diazo compound or the like can be used.

The ultraviolet curable resin composite material may contain sensitizers, fillers, non-reactive organic polymers, leveling agents, thixotropy imparting agents, thermal polymerization inhibitors and the like added thereto.

When the solventless ultraviolet curable resin composite material 20A is applied on the printed pattern 12, the photopolymerizable monomer in the solventless ultraviolet curable resin composite material 20A penetrates into the dried ink of the printed pattern 12 to dissolve the ink, so the ink can be recovered Adhesion, the ink has the same wet state as immediately after printing the printed pattern. Therefore, the non-solvent type ultraviolet curable resin composite material 20A can have a function equivalent to that of a generally used activator to thereby omit the application of an activator, diluent, etc. The volatility of this component is generally much lower than that of solvents, etc., and the degree of adhesiveness recovered after the adhesiveness is restored neither changes nor decreases, which can realize the expectation of activation stability, which cannot be achieved in solvent type.

When the printed pattern 12 is transferred on the article 10 and the ultraviolet rays 22 are irradiated thereon, in a state where each component of the ultraviolet curable resin composite material 20A such as a photopolymerizable monomer penetrates into the ink of the printed pattern 12, the ultraviolet rays are hardened. Hardened resin composite, so both UV curable resin composite and ink are fully combined. This imparts mechanical surface protection functions such as abrasion resistance and the like and chemical surface protection functions such as solvent resistance, drug resistance and the like to the decorative layer itself. This embodiment also has the same functions as those of the first form of embodiment. Since the photopolymerizable monomer itself participates in polymerization after ultraviolet irradiation, this monomer is never separated so that there is no adverse effect thereafter.

As described above, the ultraviolet curable resin composite material having a solvent added thereto such as a commercially available general ultraviolet curable paint material for the first form of embodiment and a solventless type ultraviolet curable paint material for the fourth form of embodiment Resin composites generally impart a surface protection function to the printed pattern 12 itself because these composites are fully bonded to the printed pattern, but non-solvent type ultraviolet curable resin composites are superior to ultraviolet curable resins containing solvents added thereto for the following reasons composite material.

Since the UV curable resin is hardened by ultraviolet light irradiation for a short time, if the added solvent is a low boiling point solvent with high volatility, the solvent is completely evaporated before forcing the product under water to thus provide poor transfer due to lack of adhesion. Printing, and if the added solvent is a high-boiling solvent that is difficult to volatilize, it can avoid the lack of adhesion when the product is forced into the water, but the ultraviolet irradiation cannot be performed until the solvent is completely volatilized, and if the solvent is not fully volatilized The UV-curable resin composition is hardened by ultraviolet irradiation in a state in which a solvent is involved, and defects such as surface roughness may be generated later. Therefore, if an ultraviolet curable resin composite material containing a solvent added thereto is used, which is low boiling point or high boiling point, there is a possibility of health damage due to air pollution or absorption by the human body and various problems with workmanship or quality .

On the other hand, as already partially explained, if a solvent-free type ultraviolet curable resin composite material is used, since the photopolymerizable monomer can also be used as a diluent for the purpose of adjusting the degree of viscosity, more can be prepared compared with the type containing a solvent. Quantities of solvent-free UV curable resin composites. This enables sufficient and stable restoration of adhesiveness only by the action of a solvent-free activating component, typically a photopolymerizable monomer, in the solvent-free ultraviolet curable resin composite material. In addition, since the ultraviolet curable resin composite material 20A and the printed pattern 12 are completely united with each other and hardened and the photopolymerizable monomer having a function equivalent to a commonly used solvent participates in polymerization itself, this photopolymerizable monomer is never separated so that there is no problem thereafter. produce adverse effects.

In the fifth form of embodiment of the present invention, an ultraviolet curable resin surface coating layer is formed on the decorative layer by hydraulic transfer printing performed separately by using the method of FIG. The activated print pattern 12 of the material 20A acquires the decorative layer in order to recoat the decorative layer. The operation of surface coating application by using the transfer film 116 containing the transparent ultraviolet curable resin composite material 120A by this water pressure transfer is applied on the entire surface of the flat water-soluble film 114 in a monochromatic state (non-patterned state) The composite material 120A forms the transfer film 116 as shown in FIG. 10 . This transfer film 116 is floated on the water surface immediately after application of the UV curable resin composite 120A and when the water soluble film 114 is properly wetted, the article 10' with the decorative layer applied thereto is forced into the water 118 . Thereafter, ultraviolet irradiation, water washing, and drying are carried out as in the steps of FIG. 8E and subsequent figures, which are performed by the decoration operation of hydraulic transfer printing, so that a hydraulic transfer printing product 110' containing a surface coating is obtained, by An ultraviolet curable resin surface coating 130 is overcoated to form the surface coating (see FIG. 11 ).

The operation of surface coating application for hydraulic transfer can be performed by using a transfer film containing an ultraviolet curable resin composite material, which is formed by hardening in advance, so that it can be printed on a flat surface in a monochromatic state (non-patterned state) The blocking is not caused after the application of the ultraviolet curable resin composite on the water-soluble film 14 instead of applying the ultraviolet curable resin composite immediately before floating the transfer film on the water surface in a monochrome state. In this case, a solvent-free ultraviolet curable resin composite material or a photopolymerizable monomer component may be applied in a single color on the pre-cured ultraviolet curable resin composite material of the transfer film before floating the transfer film on the water surface, The steps of Fig. 8C and subsequent figures are carried out so as to restore the adhesion of the ultraviolet curable resin and can then operate as a decorative hydraulic transfer.

Applying the surface coating 130 to the decorative layer 30 in this way imparts depth to the appearance of the decorative layer 30 and, in addition, further improves the mechanical and chemical surface protection of the decorative layer 30 .

The fourth and fifth forms of the embodiment of the present invention can obtain various advantages by using the solventless type ultraviolet curable resin composite material. The term "solvent-free" in the solvent-free ultraviolet curable resin composite material used by the present invention does not mean that the "solvent component" is absolutely zero, but never excludes the presence of added solvent components to avoid the present invention or contain The type of solvent component of the monomer or prepolymer, provided that the re-adhesion function of the printed pattern can be obtained from a solvent-free activating component in the UV curable resin composite, which is typically a photopolymerizable monomer to the extent necessary and complete. Similarly, the term "solvent-free" does not mean that the "volatility" of the photopolymerizable monomer is absolutely zero, but means that the volatility is not as high as that of the solvent and thus the degree of volatility that the photopolymerizable monomer has can be practically disregarded. Furthermore, it should be understood that although the operation of water pressure transfer printing requires equipment and equipment investment or safety control, the concept of ultraviolet curable resin composites may include electron ray curable resin composites because photopolymerizable prepolymers and photopolymerizable monomers are included as The electron ray hardening resin composite material of the essential component, the photopolymerization initiator can be omitted by irradiating higher energy electron rays on the resin composite material and hardening it, has the function of being activated by the photopolymerizable monomer and the photopolymerizable monomer itself participates in polymerization , functioning as an initial UV curable resin composite containing a photopolymerization initiator.

(Embodiment 3)

In a specific example (Embodiment 3) according to the fourth form of the embodiment of the present invention, a solvent-free ultraviolet curable resin composite material, which is an ultraviolet curable ink commercially available as "UV MAT-000MREDIUM", from TEIKOKU INK MANUFACTURE CO., LTD., Japan, trade name UV type screen ink, and adopt the sequence of steps shown in Figs. 8A to 8G to carry out the process. This solvent-free type ultraviolet curable resin composite should be applied or coated on the printed pattern of the transfer film by a wire bar coating method before the transfer film is introduced into the transfer bath. Float the transfer film containing the thus applied solvent-free type ultraviolet curable resin composite on the water surface of the transfer bath and after the printed pattern recovers its adhesiveness with the ultraviolet curable resin composite, force the article to enter through the transfer film underwater, as shown in Figure 8D. After the transfer, the article was taken out of the water, and then ultraviolet rays were irradiated on the article and water washing and drying were performed to thereby obtain a water pressure transfer article (product) 10' shown in FIG. 9 .

(Embodiment 4)

In Embodiment 4, the process is carried out in the same manner as in Embodiment 3, except that a UV curable ink commercially available under the name "UV PAL-000 MEDIUM" is used from TEIKOKU INK MANUFACTURE CO., LTD., Japan, commercial Named UV type screen ink, as a solvent-free UV curable resin compound.

Describe the state of the transfer printing in each embodiment, the hydraulic transfer printing is done in the same way as the conventional method, the difference is that since the resin composite material on the market is used without change, due to the high viscosity of the resin composite material in the transfer printing The operation of applying the resin composite on the membrane presents certain difficulties.

Each of the embodiments was confirmed when the adhesiveness of the decorative layer of each hydraulic transfer article (E) obtained by Embodiments 3 and 4 was tested by the cross-cut tape adhesion test method (measured 100 times with a 1 mm incision). An article (E) has the same composition as a hydrotransfer article (B) containing a printed pattern transferred by a conventional activator, but without a topcoat, and a hydrotransfer containing a conventional acrylic resin applied to the decorative layer. Product (C) had the same adhesion.

Ten stacked gauzes containing xylene were rubbed back and forth eight times as a solvent resistance test when rubbed on the surface of the product, and it was confirmed that the product of either embodiment had substantially no damage to the decorative layer, which was inferior to that containing a conventional surface coating The hydrostatic transfer article (C) of is good and shows solvent resistance as good as the conventional hydrotransfer product (C). As expected, the conventional hydraulic transfer article (B) obtained by activation with a conventional activator and without a topcoat applied thereon had very poor solvent resistance.

From these results it was confirmed that with the solvent-free UV-curable resin composite used, although it is required to adjust it to have the proper composition for initial precise transfer, it is possible to activate the printed pattern of the transfer film typically by photopolymerizable monomers to enable transfer. The ultraviolet curable resin composite material and the printed pattern are cured after irradiation of ultraviolet rays in the state where printing is possible and when fully combined, so that mechanical and chemical surface protection functions such as abrasion resistance and solvent resistance can be imparted to the obtained decorative layer.

A sixth form of the hydraulic transfer method according to the embodiment of the present invention is shown in FIG. 12 . This hydraulic transfer method is a method in which a transfer film 16 containing a protective layer 40 for surface coating and a printed pattern 12 for decoration applied on a water-soluble film 14 is provided and Floating on the water 18 in the transfer printing bath, so that the direction of the printing pattern 12 is upward and forcing the product 10 for transferring the printing pattern 12 under the water pressure into the water 18 through the transfer film 16 so that the water pressure transfer printing. The water-soluble film 12 may be the same as that used in the first, second, fourth and fifth forms of the embodiment.

Although the protective layer 40 for the surface coating may be a composite material such as a suitable drying hardening coating material and other composite materials having abrasion and chemical resistance, it may preferably be a transparent ink or an ultraviolet curing resin composite material and More preferably, it is a solvent-free ultraviolet curable resin composite material, which is the same as the material for recovering the adhesiveness of the printed pattern 16, as will be described later. This protective layer 40 can be applied over the entire surface of the water-soluble film 14 by suitable application means. In general hydraulic transfer printing, the printed pattern 12 can be applied on the protective layer 40 on the water-soluble film 14 by gravure printing and other suitable means. This printed pattern 12 also comprises a planar (non-patterned) printed layer other than a pattern in the strict sense. In the case where the protective layer 40 for surface coating is formed of an ultraviolet curable resin composite material, the printing pattern 12 is applied thereon in a state of drying the resin composite material in advance, so that the printing pattern can be printed by an inkjet system as desired 12.

Also in the sixth form of the embodiment, a solventless type ultraviolet curable resin composite material for restoring the adhesiveness of the printed pattern 12 of the transfer film 16 may be applied. A specific example of the hydraulic transfer method according to the sixth form of the embodiment and the protective layer 40 and the printed pattern 12 applied on the water-soluble film 14 are shown in FIG. 13 in a state where they are dry (see FIG. 13A ).

When hydraulic transfer is performed, a solventless type ultraviolet curable resin composite material 20A is applied on the dry printed pattern 12 of the transfer film 16 (see FIG. 13B ). In a state where the adhesiveness of the printed pattern 12 is restored by the solventless type ultraviolet curable resin composite material 20A, the transfer film 16 floats on the water 18 in the transfer bath (see FIG. 13C ). Thereafter, the article 10 is forced underwater together with the transfer film 16 so that the printed pattern 12 comprising the UV curable resin composite material 20A engages against the surface 10S of the article 10 (see FIG. The printing pattern 12 of the resin composite material 20 and the protective layer 40 for surface coating and then irradiating ultraviolet rays 22 on the product 10, thus hardening the printing on the resin composite material including the ultraviolet curable resin composite material 20A and the protective layer 40 for surface coating Pattern 12 (see Figure 13E). In the case where the protective layer 40 is formed of an ultraviolet curable resin composite material, the ultraviolet curable resin composite material of the protective layer 40 is completely cured together with the ultraviolet curable resin composite material 20A for restoring adhesiveness with this ultraviolet irradiation. To explain the hardening of the protective layer 40 together with the ultraviolet curable resin composite material for restoring adhesion by the step of irradiating ultraviolet rays, the protective layer 40 formed of the ultraviolet curable resin composite material will be described.

Although not shown, in practice the article is forced underwater with the article conveyed by an inverse triangular conveyor or supported by a robotic arm. In some cases, the order of the step of applying the solvent-free ultraviolet curable resin composite material 20A on the printed pattern 12 (see FIG. 13B ) and the step of floating the transfer film on water (see FIG. 13C ) can be reversed so that the solvent-free The type ultraviolet curable resin composite material 20A is applied by spraying on the printed pattern 12 of the transfer film 16 floating on water to thereby restore the adhesiveness of the printed pattern.

"Ultraviolet curable resin composite material" excludes solvent-containing type ultraviolet curable resin composite materials such as those used in the fourth and fifth forms of embodiments and is therefore limited to non-solvent type ultraviolet curable resin composite materials that do not contain a solvent added thereto. Material. The reason is that the recovery of the adhesion of the protective layer for printed patterns and surface coatings is based on the solvent-free active component in the solvent-free ultraviolet curable resin composite, which may typically be a photopolymerizable monomer. The ultraviolet curable resin composite material suitable for use in the present invention includes components having the following composition. Since this component is the same as that used in the fourth and fifth forms of embodiment, detailed explanation is omitted.

(1) Oligomer (photopolymerized prepolymer) 30-50wt%

(2) Multifunctional acrylate

(photopolymerizable monomer) 10-30wt%

(3) Monofunctional acrylate

(photopolymerizable monomer) 10-40wt%

(4) Photopolymerization initiator 0.5-5wt%

(5) Non-reactive additives 1-20wt%

When the solventless ultraviolet curable resin composite material 20A is applied on the printed pattern 12, the photopolymerizable monomer as the solventless activating component in the solventless ultraviolet curable resin composite material 20A penetrates into the dried ink of the printed pattern 12 and also penetrates into the printed pattern 12. At least a part of the protective layer 40 for surface coating is dissolved to dissolve them, so that the adhesiveness can be restored, which is in contact with the printed pattern 12 and the protective layer 40 just after printing the printed pattern 12 and applying the protective layer 40. The state is the same as the wet state. Therefore, as described in the fourth and fifth forms of the embodiment, the same functions as conventional activators can be achieved. The application of activators, diluents, etc. can be omitted. Since each component in the ultraviolet curable resin composite such as photopolymerizable monomers generally has a volatility much lower than that of solvents, etc., the degree of restored adhesion neither changes nor decreases, so it can be expected to stabilize the activation of the printed pattern.

When ultraviolet rays 24 are irradiated on the article after the printed pattern 12 is transferred thereon, each component of the ultraviolet curable resin composite material 20A such as a photopolymerizable monomer penetrates into the ink component of the printed pattern 12 and the protective layer 40 for surface coating, Therefore, the ultraviolet curable resin composite material 20A and the ink component of the printed pattern 12 are cured in a state in which both are fully combined and the ultraviolet curable resin composite material 20A and at least a part of the surface are also hardened in a state in which both are fully combined A protective layer 40 is used for the coating. Therefore, imparting mechanical surface protection functions such as abrasion resistance, etc. and chemical surface protection functions such as solvent resistance, drug resistance, etc. to the decorative layer itself and can also improve the adhesion of the protective layer 40 for surface coating to the printed pattern 12 for the decorative layer. attachment. Simultaneously when the ultraviolet curable resin composite material 20A is cured by ultraviolet rays, the ultraviolet curable resin composite material of the protective layer 40 is also cured. In FIGS. 13B and 13C, although the ink composition of the printed pattern 12, the composition of the surface coating protective layer 40, and the ultraviolet curable resin composite material 20A are not shown in a state in which they are completely combined, it should be noted that since in these figures Displaying them in a joint state will not distinguish them, so they are displayed in a layer state for convenience. Also as mentioned earlier, since the photopolymerizable monomer itself participates in the polymerization, it never separates, preventing adverse effects due to separation thereafter.

Then, as shown in FIG. 13F , a water spray 24 is sprayed to wash the article with water to thereby remove the water soluble film 14 covering the transfer film 16 of the article. Subsequently, as shown in FIG. 13G , hot air 26 is blown toward the product 10 on which the printed pattern 12 comprising the ultraviolet curable resin composite material 20A and the protective layer 40 for surface coating are transferred, so that the surface of the product 10 is thus dried, A product 10' comprising a decorative layer 30 and a surface coating 32 is thus completed (see FIG. 14).

Thus, when the decorative layer 30 and the topcoat 32 are provided, the topcoat 32 imparts depth to the appearance of the decorative layer 30 and further enhances the mechanical and chemical surface protection of the decorative layer 30 .

(Embodiment 5)

In a specific example (Embodiment 5) according to the sixth form of the embodiment of the present invention, on a flat water-soluble film containing polyvinyl alcohol as a main component in a uniform manner over the entire surface, by using a winding with a diameter of 12mm Wound Rod Applicator for Wire Rod and #8 Wire Apply or coat with commercially available material under the trade name "KLCF IMPROVEMNET 3 MEDIUM" and ethyl acetate from THE INTECK CO., LTD., Japan. Scale 1 : 1 mixture, used as a protective layer for surface coating and after drying it naturally in a normal temperature atmosphere for 10 minutes, using an ink containing alkyd resin and nitrocellulose made by THE INTECH CO., LTD., Japan is attached to it The brush tip of the brown ink with the trade name "KLCF IMPROVEMENT 3 BROWN" writes the pattern arbitrarily, thus obtaining a transfer film containing a laminated protective layer for surface coating and a pattern of ink for decoration (which corresponds to the printed pattern). Using FIG. 13A The sequence of steps shown in 13G uses a transfer film for hydraulic transfer printing and for application of ink patterns for decoration to the transfer film to restore adhesion in the ink, using a solvent-free ultraviolet curable resin composite material, which is based on UV curable ink commercially available under the trade name "UV PAL-000 MEDIUM", UV type screen ink from TEIKOKU INK MANUFACTURE CO., LTD. Just before the transfer film is to be introduced into the transfer bath, it is applied by a wire-wound bar The coating method applies this solvent-free ultraviolet curable resin composite material on the ink pattern (printed pattern) of the transfer film.The transfer film containing the thus applied solvent-free ultraviolet curable resin composite material is placed on the water surface of the transfer bath Floating. After the adhesiveness of the ink pattern is restored by this ultraviolet curable resin composite, as shown in Figure 13D, the article is forced to enter underwater through the transfer film. After adopting this method to transfer the ink pattern and the protective layer for the surface coating After that, the article was taken out of the water, ultraviolet rays were irradiated on the article and washed with water and dried, thus obtaining a water pressure transfer article (product) 10' shown in FIG. 14 .

(Embodiment 6)

Water pressure transfer is carried out in the same manner as Embodiment 5, except that the protective layer for the surface coating of the transfer film is used by mixing in a ratio of 1:1, manufactured by THE MUSASHITORYO CO., LTD., Japan, and the trade name is "PLA-ACE" acrylic varnish and ethyl acetate obtained substance.

(Embodiment 7)

Water pressure transfer printing is performed in the same manner as in Embodiments 5 and 6, except that the ultraviolet curable ink manufactured and sold by THE TEIKOKU INK MANUFACTURE CO., LTD., Japan under the trade name "UV PAL-000 MEDIUM" is applied. After being used as a protective layer for the surface coating of the transfer film, the ink is the same as that applied for the adhesion recovery (activation) purpose of the hydraulic transfer film, and the initial hardening of the composite material requires irradiation 1 % or less amount of very weak ultraviolet rays harden and stop just before the fingers dry to the touch, print a suitable pattern on the protective layer, by using a large size inkjet printer MAXART manufactured by THE SEIKO EPSONCO., LTD., Japan The series of MC-10000 and six colors of pigment system oily inks were used to prepare the pattern by the paint system software and then the pattern was dried under normal temperature atmosphere for 30 minutes, thus obtaining a pattern containing surface coating and ink pattern (corresponding to the printed pattern) transfer film.

In any one of Embodiments 5 to 7, since the two layers of the ink pattern and the protective layer for surface coating are dissolved, although compared with the case of transferring a transfer film containing only the ink pattern provided thereon, it requires more A bit more time to recover the adhesion of the ink pattern, but the hydrostatic transfer according to either embodiment is done in a good manner, except that the disappearance of pattern wrinkles around parts especially with dark colors is delayed outside. In addition, the hydraulically transferred articles (G) obtained in these embodiments contained a surface coating layer applied on the entire decorative layer simultaneously with the transfer and it was confirmed that compared with the hydraulically transferred articles according to Embodiments 6 and 7, The hydraulic transfer-printed article according to Embodiment 5 has slightly lower gloss, but has significantly better adhesion than printing penetrated by a solvent-free ultraviolet-curable resin composite by transfer printing by recovering a printed pattern from a resin composite The pattern obtains the glossy feel of the water pressure transfer article (E) (see embodiment 4) without a surface coating and also has the apparent depth of the decorative layer imparted thereto.

When the adhesiveness of the decorative layer and the surface coating layer of the hydraulic transfer article obtained by each embodiment was tested by the cross-cut tape adhesion test method (1 mm incision measurement 100 times), the adhesion according to any one of the embodiments was confirmed. Articles with and without any surface coating but with a printed pattern transferred by activating the printed pattern with a conventional activator (B), containing a conventional water pressure transfer of a conventional acrylic resin applied on the decorative layer The pressure transfer article (C) had the same adhesiveness as the water pressure transfer article according to Embodiment 4 or 5.

Ten stacked gauzes containing xylene were rubbed back and forth eight times as a solvent resistance test when rubbed on the product surface, and it was confirmed that the product of either embodiment exhibited a water resistance equivalent to that of a surface coating containing an ultraviolet-curable coating material. Good solvent resistance of press transfer articles (F).

In Embodiments 5 to 7, a transfer film comprising a laminated protective layer for surface coating and an ink pattern (printed pattern) for decoration is used and water pressure transfer is performed after activating the ink pattern by applying an ultraviolet curable resin composite , but since, in either embodiment, the purpose is to confirm the recovery of the adhesiveness of the ink pattern (printed pattern) and the protective layer for the surface coating, the ink pattern and the ink pattern under water pressure around the pattern-transfer body (product) Winding characteristics of the protective layer for surface coating and the ability to harden the UV curable resin composite material, ink pattern and surface coating on the pattern-transfer body by ultraviolet radiation when they are fully combined with each other, so there is also improvement of surface gloss degree and surface smoothness, so it should be understood that more excellent surface gloss, mechanical strength, Solvent etc.

A water pressure transfer method according to a seventh form of the embodiment of the present invention is shown in FIG. 15 . This water pressure transfer method is a method in which a surface protection layer transfer film 316 containing a surface protection layer 340 for product surface protection applied on a water soluble film 314 is provided and heated in a transfer bath not shown. Float on the water 318 so that the surface protection layer 340 is oriented upward and the article 10 to be transferred with the surface protection layer 340 under water pressure is forcibly pressed into the water 318 through the transfer film 316 to thereby perform hydraulic transfer. The water-soluble film 312 may be the same as that used for the first to fifth forms of the embodiment.

The surface protection layer 340 may be a suitable composite material such as a dry hard coating material, transparent ink with abrasion resistance and drug resistance. The surface protection layer 340 can be applied on the entire surface of the water-soluble film 314 by suitable means such as gravure printing. The surface protection layer 340 may be formed of an ultraviolet curable resin composite material.

In the water pressure transfer method according to the seventh form of the embodiment, the surface protection layer 340 applied on the water-soluble film 314 is in a dry state (see FIG. 15A ), which is different from the non-dried state according to the third form of the embodiment. state of the surface protection layer 240 .

When hydraulic transfer is performed, an ultraviolet curable resin composite material 320A is applied on the dry surface protective layer 340 of the transfer film 316 (see FIG. 15B ). In a state where the adhesiveness of the surface protective layer 340 is restored by the ultraviolet curable resin composite material 320A, the transfer film 316 is floated on the water 18 in the transfer bath (see FIG. 15C ) with the surface protective layer 340 facing upward. . Thereafter, the article 10 not containing the applied decoration (undecorated article) is forced underwater together with the transfer film 316 so that the surface protection layer 340 including the ultraviolet curable resin composite material 320A is bonded against the surface 10S of the article 10 ( 15D) to thereby transfer the surface protection layer 340 comprising the ultraviolet curable resin composite material 320A and then irradiate ultraviolet rays 322 on the article 10 having the surface protection layer transferred thereon, the surface protection layer comprising the ultraviolet curable resin composite material 320A. material, thus hardening the ultraviolet curable resin composite material 320A and the surface protection layer 340 (see FIG. 15E ).

As described with reference to other versions of the embodiment, the article 10 may be forced underwater with the article conveyed by an inverted triangle conveyor or supported by a robotic arm. Similarly, the order of the step of applying the ultraviolet curable resin composite material 320A on the surface protection layer 340 (see FIG. 15B ) and the step of floating the transfer film on the water 318 (see FIG. 15C ) can be reversed and the ultraviolet curable resin can be cured by spraying. The resin composite material 320A is applied on the surface protection layer 340 to thereby restore the adhesion of the surface protection layer 340 .

The ultraviolet curing resin composite material 320A applied on the surface protection layer 340 of the transfer film 316 for restoring its adhesiveness is used to properly activate the dry surface protection layer 340 of the transfer film 316 to restore the surface protection of the transfer film 316 The adhesive properties of layer 340 may be a solvent-containing ultraviolet curable resin composite material, the same as that used in the first and second forms of the present invention or may be a solvent-free UV curable resin composite material, similar to that used in the present invention The same as for the fourth through sixth forms. An example of a solvent-containing ultraviolet curable resin composite material and an example of a solventless ultraviolet curable resin composite material are listed below.

(Solvent-based UV curable resin composite material)

(1) Oligomer 30-50wt%

(2) Multifunctional acrylate 10-30wt%

(3) Monofunctional acrylate 10-40wt%

(4) Non-reactive additives 1-20wt%

(5) Photopolymerization initiator 0.5-5wt%

(6) Solvent balance

(Solvent-free UV curable resin composite material)

(1) Oligomer (photopolymerized prepolymer) 30-50wt%

(2) Multifunctional acrylate

(photopolymerizable monomer) 10-30wt%

(3) Monofunctional acrylate

(photopolymerizable monomer) 10-40wt%

(4) Photopolymerization initiator 0.5-5wt%

(5) Non-reactive additives 1-20wt%

The mechanism for restoring the adhesiveness of the surface protection layer 340 due to the activation components of these ultraviolet curable resin composite materials 320A is the same as that used for restoring the adhesion in the first to third forms and in the fourth to sixth forms. The specific ultraviolet curable resin composite materials are the same, and the detailed description of the function of each composite material is omitted. In this way, the ultraviolet curable resin composite material 320A is impregnated into the surface protection layer 340, so the resin composite material 320A and the surface protection layer 340 are completely combined with each other, but if FIG. 15 tries to show such a state, the two cannot be distinguished from each other, so it should It is understood that they are indicated by the state of the layers for convenience.

Then, as shown in FIG. 15F , spray water 324 is sprayed to wash the article 310 with water to thereby remove the water-soluble film 314 covering the transfer film 316 of the article 310 . Subsequently, as shown in FIG. 15G, the hot air 326 is blown to the product to dry its surface, and the surface protection layer 340 comprising the ultraviolet curable resin composite material 320A is transferred on the product, thus obtaining a product containing the transferred surface protection layer 340. 310 (see FIG. 16).

Thus, when the surface protection layer 340' is applied, the mechanical and chemical protection of the article 310 can be enhanced. In particular, since the ultraviolet curable resin composite material for restoring adhesion is impregnated into the surface protective layer 340, the surface protective layer 340 and the ultraviolet curable resin composite material are completely united with each other, so the same manner as the fifth form of the embodiment can be adopted. Improves adhesion and solvent resistance of surface protection layers. Since the surface protection layer 340' is applied to the article by hydraulic transfer printing, the surface protection layer 340' has a surface that is never disturbed and a high gloss feel imparted thereto.

Although in the method according to the seventh form of the embodiment of the present invention, the article 10 does not contain decoration applied thereto, the surface protection layer 340 may be applied to the surface protection layer 340 containing the decoration layer 10' by hydraulic transfer printing or other suitable means. The product 10' (such as the product according to Fig. 9 of embodiment 3). Figure 17 shows a decorative article 310 thus protecting the surface.

UV curing for restoring the adhesion of the surface protection layer 340 in consideration of the lower undesired volatility of the activating component and the promotion of its adhesion restoration as described with reference to the fourth to sixth forms The resin composite material 320A may be more preferably a solventless type ultraviolet curing resin composite material rather than a solvent type ultraviolet curing resin composite material, thus preventing deterioration of the operating atmosphere.

(Embodiment 8)

In a specific example (Embodiment 8) according to the seventh form of embodiment of the present invention, on a planar water-soluble film containing polyvinyl alcohol as a main component over the entire surface in a uniform manner, by a gravure printing application method using a A printing cylinder of 60 micron #10 screen is applied or coated with a product named "KLCF IMPROVEMNET 3 MEDIUM" purchased from THEINTECK CO., LTD., Japan and a mixture of ethyl acetate in a ratio of 1:1 as the surface of the article After the protective layer is dried by blowing the wind of the normal temperature atmosphere for several seconds, to thus obtain the surface protective layer transfer film. Hydrostatic transfer using a transfer film was performed using the sequence of steps shown in Figures 15A to 15G to apply a surface protection layer on an undecorated article. For restoration of the transfer film surface protective layer by applying a substance including a main component of an ultraviolet curable paint material available from FUJIKURA KASEI CO., LTD., Japanese trade name FUJIHARD HH9 as an ultraviolet curable resin composite material on the surface protective layer of adhesion. This ultraviolet curable coating material is applied on the surface protective layer resin of the transfer film by the same method as that used for the wire bar coating method of Embodiment 5 just before introducing the transfer film into the transfer bath. A transfer film containing the ultraviolet curable paint material thus applied is floated on the water surface of the transfer bath. After the adhesion of the surface protective layer is restored by this ultraviolet curable paint material, the article is forced to go underwater together with the transfer film. After transferring the surface protective layer on the surface of the article in this way, the article is taken out of the water, irradiated with ultraviolet rays on the article and washed and dried by water, thus obtaining the hydraulic transfer containing the surface protective layer 340 ′ shown in FIG. 16 . Printed product (product) 310.

(Embodiment 9)

In another specific example (Embodiment 9) according to the seventh form of the embodiment of the present invention, the same method as Embodiment 8 is applied or coated on the planar water-soluble film containing polyvinyl alcohol as the main component by pressing A material obtained by mixing acrylic paint and ethyl acetate under the trade name "PLA-ACE" manufactured by THE MUSASHITORYO CO., LTD., Japan at a ratio of 1:1 was used as a surface protective layer of the transfer film. On articles decorated by hydraulic transfer, but not containing an applied surface coating, hydraulic transfer is carried out using a transfer film in the same manner as shown in Figures 15A to 15G, to thus obtain the water Press transferred article 310 . This embodiment is equivalent to Embodiment 8, except that by applying a solvent-free ultraviolet ray of ultraviolet curable screen ink manufactured and sold by THE TEIKOKU INK MANUFACTURE CO., LTD., Japan under the trade name "UV PAL-000 MEDIUM" Hardens the resin composite to restore the adhesion of the surface protection layer.

In either of Embodiments 8 and 9, the surface protective layer 340 can be transferred in a good manner under water pressure and the surface protective layer 340 thus transferred has a uniform film thickness with less surface disorder (non-uniformity) ) and a good glossy feel. It was confirmed that the water pressure-transferred article (H) obtained by Embodiment 9 has depth imparted thereto to provide a high-grade feeling by providing a uniform film thickness with less surface disorder, so that it is thus better than the water pressure-transferred Product (G) imparting a good glossy feeling, said water pressure transferred product (G) containing a surface protective layer for surface coating and a decorative print pattern transferred in Embodiments 5 to 7 under water pressure. This has a glossy feel equivalent to that of the surface-finished hydraulically transferred article (C) formed by applying and drying an acrylic resin on a decorative layer by a conventional spraying method.

When the adhesion of the surface protective layer of the hydraulic transfer article obtained by each of Embodiments 8 and 9 was tested by the cross-cut tape adhesion test method (1 mm incision measurement 100 times), it was confirmed that according to any one of the embodiments Adhesion to the surface of the article (the surface of an undecorated article or the decorative layer of a decorated article) is equivalent to that of the hydraulically transferred articles according to Embodiments 3 and 4.

Ten stacked gauzes containing xylene were rubbed back and forth eight times as a solvent resistance test when rubbed on the surface of the product (hydraulic transfer product), and it was confirmed that the products of any one of Embodiments 8 and 9 showed the same Good solvent resistance of the products of the embodiments.

In Embodiment 8, a surface protection layer is applied on the surface of an article (molded article) formed by injection molding or the like after appropriate surface treatment if necessary and it is confirmed that it has a surface finish (uniform film thickness) equivalent to that of an article containing the surface protection and arranged gloss-feeling finishes), wherein the above-mentioned surface protection is formed by a coating robot with a spray gun mounted thereon and can obtain more arranged A more uniform surface protection layer with a glossy feel where operator handling is not as good as in truss gun coating.

Embodiment 9 can be referred to as an example of repetition of similar steps, wherein the flat printing layer obtained by applying transparent ink or transparent coating material on the decorative layer 30 of the article 10' is transferred under water pressure, wherein the The hydraulic transfer obtains the decorative layer 30 of the article 10'.

[industrial applicability]

According to the water pressure transfer method of the present invention, since the ultraviolet curable resin composite material is applied to the printed pattern and/or the surface protection layer of the transfer film to be transferred to the product, to restore the adhesion and ultraviolet rays of the ink of the printed pattern The hardened resin composite penetrates into the printed pattern, imparts a surface protection function to the decorative layer formed by transferring the printed pattern after ultraviolet curing, and thus can significantly improve usability in industry.

Claims (19)

1. one kind is suitable under water pressure the method for hydraulic transfer of the printed patterns (12) of transfer printing transfer film (16) on goods (10) surface, described transfer film forms by apply described printed patterns on water-solubility membrane (14), and described method is included in the step that applies ultraviolet hardening resin composite (20) on the described printed patterns of described transfer film; Recover under the adhering state of described printed patterns by described ultraviolet hardening resin composite therein, force described goods to enter under water (18) and adhere to step on the described product surface with the described printed patterns of forcing to comprise described ultraviolet hardening resin composite with described transfer film; With the step of irradiation ultraviolet radiation on described goods, transfer printing has the described printed patterns that comprises described ultraviolet hardening resin composite on described goods, and described ultraviolet hardening resin composite thus hardens.

2. one kind is suitable under water pressure the method for hydraulic transfer of the printed patterns of transfer printing transfer film on product surface, described transfer film forms by apply described printed patterns on water-solubility membrane, and described method comprises by apply the step that described printed patterns prepares transfer film on the water-solubility membrane that contains the ultraviolet hardening resin composite (20A) that applies in advance thereon; Keep therein under the adhering state of described printed patterns, force described goods to enter under water with the described printed patterns of forcing to comprise described ultraviolet hardening resin composite and adhere to step on the product surface with described transfer film; With the step of irradiation ultraviolet radiation on described goods, transfer printing has the described printed patterns that comprises described ultraviolet hardening resin composite on these goods, and described ultraviolet hardening resin composite thus hardens.

3. method that on goods, forms UV cured type sealer, this method is included in and applies UV cured type protective agent on the water-solubility membrane (214) to form the step of sealer transfer film (216); When described sealer transfer film floats on water surface and described water-solubility membrane when becoming wet, under water pressure on described goods the step of the described UV cured type sealer (240) of the described sealer transfer film of transfer printing; With irradiation ultraviolet radiation on the described UV cured type sealer that is transferred on the described goods with the step of hardened surface protective layer.

4. the method for hydraulic transfer of claim 3, wherein said UV cured type protective agent are that UV cured type applies agent.

5. claim 3 or 4 method of hydraulic transfer further are included on the described UV cured type sealer of described water-solubility membrane and form the step of decorating with relief pattern.

6. method of hydraulic transfer that is suitable for the printed patterns of transfer printing transfer film, described transfer film forms by apply described printed patterns on water-solubility membrane, described method is included on the described printed patterns of described transfer film and applies no-solvent type ultraviolet hardening resin composite, recovers the adhering step of described printed patterns with the solvent-free activating component by described solvent-free uv-hardening resin composite; Force described goods to enter under water with the described printed patterns of forcing to comprise described uv-hardening resin composite and adhere to step on the described product surface with transfer film; Step with irradiation ultraviolet radiation on described goods, transfer printing has the described printed patterns that comprises described uv-hardening resin composite on these goods, and the state that described therein thus uv-hardening resin composite and described printed patterns are united fully hardens described uv-hardening resin composite down to form decorative layer.

7. method of hydraulic transfer that is suitable for the printed patterns of transfer decorative transfer film, described decoration transfer printing film forms by apply described printed patterns at water-solubility membrane, described method is included on the described printed patterns of described decoration transfer printing film and applies no-solvent type ultraviolet hardening resin composite, recovers the adhering step of described printed patterns with the solvent-free activating component by described solvent-free uv-hardening resin composite; Force described goods to enter under water with the described printed patterns of forcing to comprise the ultraviolet hardening resin composite and adhere to step on the described product surface with described transfer film; The step of irradiation ultraviolet radiation on described goods, transfer printing has the described printed patterns that comprises described uv-hardening resin composite on described goods, and the state that described therein thus uv-hardening resin and described printed patterns are united fully hardens described uv-hardening resin composite down to form decorative layer; Step with the ultraviolet hardening resin composite layer of transfer surface covering with paint transfer film on the described goods that contain the described decorative layer that forms thereon, described top finishing transfer film forms by apply described transparent, UV hardening resin composite on water-solubility membrane under single color state, and the described ultraviolet hardening resin composite from described top finishing transfer film forms face coat thus.

8. one kind is suitable for the printed patterns of transfer printing transfer film and the method for hydraulic transfer of top finishing protective layer, described transfer film forms by apply described top finishing protective layer and described printed patterns in order on water-solubility membrane, described method is included on the described printed patterns of described transfer film and applies no-solvent type ultraviolet hardening resin composite, recovers the adhering step of described printed patterns with the solvent-free activating component by described solvent-free uv-hardening resin composite; Force described goods to enter under water with the described printed patterns of forcing to comprise described uv-hardening resin composite and adhere to step on the described product surface with described transfer film; The step of irradiation ultraviolet radiation on described goods; in transfer printing on these goods the described printed patterns that comprises described ultraviolet hardening resin composite and the described top finishing protective layer on described printed patterns are arranged, described therein thus ultraviolet hardening resin and described printed patterns and the state of uniting fully with the described top finishing protective layer of at least a portion be the described uv-hardening resin composite of sclerosis down.

9. claim 6,7 or 8 method of hydraulic transfer, the described solvent-free activating component that wherein is used to recover the adhering described ultraviolet hardening resin composite of described printed patterns is the component that comprises photo polymerization monomer.

10. the method for hydraulic transfer of claim 8, the described protective layer that wherein is used for face coat comprises transparent ink.

11. the method for hydraulic transfer of claim 8, the described protective layer that wherein is used for face coat comprises the ultraviolet hardening resin composite.

12. the method for hydraulic transfer of claim 11 is a no-solvent type as the described ultraviolet hardening resin composite that is used for the protective layer of face coat wherein.

13. one kind is suitable under water pressure the method for hydraulic transfer of the sealer (340) of transfer surface protective layer transfer film (316) on product surface, described sealer transfer film is by applying on water-solubility membrane (314) and the desiccated surface protective agent forms, and described method is included on the described sealer of described sealer transfer film and applies ultraviolet hardening resin composite (320A) to recover the adhering step of described sealer; Recover under the adhering state of described sealer by described ultraviolet hardening resin composite therein, force described goods to enter under water with the described sealer of forcing to comprise described ultraviolet hardening resin composite and adhere to step on the described product surface with described transfer film; Step with irradiation ultraviolet radiation on described goods; transfer printing has the described sealer that comprises described ultraviolet hardening resin composite on described goods, and described ultraviolet hardening resin composite thus hardens under the state that the ultraviolet hardening resin composite combines with one another fully therein.

14. each method of hydraulic transfer of claim 13, wherein said surface protectant are the coating materials of transparent ink or dry sclerosis.

15. claim 13 or 14 each method of hydraulic transfer, wherein said ultraviolet hardening resin composite is a no-solvent type.

16. each method of hydraulic transfer of claim 1-15 wherein shines described ultraviolet described step and carries out when described water-solubility membrane is wound on around the described goods.

17. each method of hydraulic transfer of claim 1-16, the adhering described ultraviolet ray and the described ultraviolet hardening resin composite that wherein are used to recover described printed patterns are respectively electron ray and electron ray hardening resin composite.

18. hydraulic-transfer goods is characterized by by each method of hydraulic transfer of claim 1-17 and obtain.

19. hydraulic-transfer goods; it is characterized by and contain decorative layer or the sealer that forms by each method of hydraulic transfer of claim 1-8 or claim 13; and described decorative layer or described sealer be never by solvent resistance test deterioration, will comprise the reciprocal wiping of gauze eight times of ten accumulations of dimethylbenzene in described solvent resistance test on described decorative layer during friction.

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