TWI669221B - Transfer film and device having the same, and manufacturing method of decorated moding article - Google Patents

Abstract

A transfer film comprising a substrate, a protective layer, a non-conductive, metallic ink layer, and an adhesive layer. The substrate has a first surface and a second surface, and the first surface has a first texture. The protective layer is disposed on the first surface of the substrate, the protective layer has a third surface and a fourth surface, wherein the third surface is in contact with the first surface, and the third surface has a second texture complementary to the first texture. A non-conductive, metallic ink layer is disposed on the fourth surface of the protective layer, wherein the non-conductive metallic ink layer has a fifth surface and a sixth surface, and the fifth surface is in contact with the fourth surface. The layer is then disposed on the sixth surface of the non-conductive, metallic ink layer.

Description

Transfer film and device having transfer film, and method for producing decorative molded article

The present invention relates to a transfer film, a device having a transfer film, and a method of manufacturing a decorative molded article, and more particularly to a transfer film having a metallic texture and a device having a transfer film. A method of manufacturing a molded article.

Nowadays, in order to enhance the aesthetic appearance of an electronic device, a metal-coated outer casing is usually provided on the electronic device. In general, if a metal texture is to be exhibited on the outer appearance of the outer casing of the product, the metal is usually coated on the film by vapor deposition and sputtering. However, such a film has a shielding effect due to the metal layer, so when applied to a mobile phone, the design of the antenna is limited. Moreover, such a film also has a problem that the metal luminance is too high, the visual effect is poor, and the metal layer generates electrostatic adsorption debris, resulting in poor yield. On the other hand, if the metal-like raw materials are sprayed or printed onto a partial outer casing by means of printing, painting, inkjet or thermal transfer, the true metallic luster cannot be expressed due to the limitation of the nature of the material. And the metal is cold.

The present invention provides a transfer film sheet, a device having a transfer film sheet, and a method for producing a decorative molded article, wherein the transfer film sheet can exhibit a metallic gloss and a metal cooling feeling with good visual effects, and at the same time, improve the metal The problem of excessive brightness, shielding effect, and insufficient metal texture. In addition, the transfer film of the present invention can effectively reduce the cost and exhibit excellent yield.

The present invention provides a transfer film comprising a substrate, a protective layer, a non-conductive, metallic ink layer, and an adhesive layer. The substrate has a first surface and a second surface opposite each other, and the first surface has a first texture. The protective layer is disposed on the first surface of the substrate, the protective layer has a third surface and a fourth surface opposite to each other, wherein the third surface is in contact with the first surface, and the third surface has a second surface complementary to the first texture Texture. The non-conductive metal-like ink layer is disposed on the fourth surface of the protective layer, wherein the non-conductive metal-like ink layer has fifth and sixth surfaces opposite to each other, and the fifth surface is in contact with the fourth surface. The layer is then disposed on the sixth surface of the non-conductive, metallic ink layer.

In an embodiment of the invention, the non-conductive, metal-like ink layer is formed of an ink composition. The ink composition includes mica, a mill base, and a solvent.

In an embodiment of the invention, the ink composition has a mica content of from about 3 wt% to about 15 wt%, based on 100 wt% of the ink composition.

In an embodiment of the invention, the ink composition further comprises Yinnai Rice noodles.

In an embodiment of the invention, the ink composition has a total content of silver nanowires and mica of from 3 wt% to 18 wt%, based on 100 wt% of the ink composition.

In an embodiment of the invention, the ink composition further includes a metal having a conductivity of not more than nickel.

In an embodiment of the invention, in the ink composition, the total content of the silver nanowire, mica, and the metal having a conductivity of not more than nickel is from 3 wt% to 18 wt%, based on 100 wt% of the ink composition.

In an embodiment of the present invention, in the ink composition, the total content of the silver nanowire, the mica, the color paste, and the metal having a conductivity of not more than 10% by weight to 30% by weight based on 100% by weight of the ink composition. .

In an embodiment of the invention, the mica is inorganic mica.

The present invention further provides a method for manufacturing a decorative molded article, comprising: placing a workpiece and the transfer film in a jig; performing a high-pressure transfer molding process to adhere the transfer film to the adhesive layer via the adhesive layer On the surface of the workpiece; removing the substrate of the transfer film; and curing the protective layer to form a hardened layer.

In an embodiment of the invention, the high-pressure transfer molding process includes: contacting the transfer film with the workpiece, and performing a heating and softening step; performing a pressing step on the transfer film and the workpiece; and transferring the film The sheet and the workpiece are subjected to a high pressure vacuum forming step to transfer the transfer film to the workpiece.

In an embodiment of the invention, the workpiece is plastic, glass, aluminum, magnesium alloy or carbon fiber reinforced plastic.

The present invention also provides an apparatus having a transfer film comprising a body, an outer casing having an inner surface and an outer surface, and the transfer film, wherein the outer casing covers the body via the inner surface, and the adhesive layer is attached to the adhesive layer Fits to the outer surface of the outer casing.

In an embodiment of the invention, the outer casing is plastic, glass, aluminum, magnesium alloy or carbon fiber reinforced plastic.

In an embodiment of the invention, the device having the transfer film described above is a mobile phone, a notebook computer or a tablet computer.

Based on the above, the transfer film of the present invention comprises a non-conductive metal-like ink layer containing at least one of mica and a low-conductivity or non-conductive metal. It can show a good metallic luster and a cool metal sensation without the shielding effect or the lack of metal texture. Further, in the transfer film of the present invention, a non-conductive metal-like ink layer is formed, and the non-conductive metal-like ink layer has a low metal content and does not generate static electricity to adsorb debris, so that the transfer film is processed. Can show excellent yield. Moreover, the transfer film of the present invention is formed with a single layer of non-conductive metal-like ink layer, which can exhibit metallic luster and metal cooling sensation without forming a metal layer by sputtering, thereby effectively reducing cost and Reduce the quality of the material to achieve a lightweight effect.

The above described features and advantages of the invention will be apparent from the following description.

10,130‧‧‧Transfer film

10a‧‧‧ diaphragm

11‧‧‧Substrate

11a‧‧‧ first surface

11b‧‧‧ second surface

11c‧‧‧ first texture

12‧‧‧Protective layer

12a‧‧‧ third surface

12b‧‧‧ fourth surface

12c‧‧‧second texture

13‧‧‧Metal metal ink layer

13a‧‧‧ fifth surface

13b‧‧‧ sixth surface

14‧‧‧Next layer

20‧‧‧Workpiece

20a‧‧‧ surface

22‧‧‧ hardened layer

30‧‧‧Adding molded products

100‧‧‧Device with transfer film

110‧‧‧ body

120‧‧‧Shell

120a‧‧‧ inner surface

120b‧‧‧ outer surface

1 to 3 are cross-sectional views showing a manufacturing flow of a transfer film according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a decorative molded article according to an embodiment of the present invention.

Figure 5 is a cross-sectional view of an apparatus having a transfer film according to an embodiment of the present invention.

1 to 3 are cross-sectional views showing a manufacturing flow of a transfer film according to an embodiment of the present invention. In particular, the thickness or proportion of each layer in Figures 1 to 3 is moderately enlarged or reduced for clarity and ease of illustration, and does not represent the actual thickness or proportion of each layer.

Referring first to Fig. 3, Fig. 3 shows a cross-sectional view of a transfer film of an embodiment.

The transfer film 10 includes a substrate 11, a protective layer 12, a metal-like ink layer 13 (hereinafter, a "non-conductive metal-like ink layer" is simply referred to as a "mim-like metal ink layer"), and an adhesive layer 14. The substrate 11 has a first surface 11a and a second surface 11b opposed to each other, and the first surface 11a has a first texture 11c. Further, the protective layer 12 is disposed on the first surface 11a of the substrate 11. The protective layer 12 has third and fourth surfaces 12a, 12b opposite to each other, wherein the third surface 12a is in contact with the first surface 11a, and the third surface 12a has a second texture 12c that is complementary to the first texture 11c. The imitation metal ink layer 13 is disposed on the fourth surface 12b of the protective layer 12. Imitation metal oil The ink layer 13 has fifth and third surfaces 13a and 13b opposed to each other. The fifth surface 13a is in contact with the fourth surface 12b. Next, the layer 14 is disposed on the sixth surface 13b of the imitation metal ink layer 13.

The manufacturing flow of the transfer film 10 of the above embodiment will be described below. Referring to FIG. 1, first, the substrate 11 has a first surface 11a and a second surface 11b opposed to each other, and the first surface 11a has a first texture 11c. In detail, the substrate 11 acts as a release layer. The substrate 11 is, for example, an acrylic resin, a polyester, a polystyrene (PS), a polyvinyl chloride (PVC), a polyethylene (PE), or a polyethylene resin (PE). Polypropylene (PP), Polyolefin (PO), Polycarbonate (PC), Polyurethane (PU), O-phenylphenol (OPP), Poly A resin film such as polyvinyl alcohol (PVA) or cast polypropylene (CPP); or a cellulose film such as paper. A concave-convex texture structure is formed on one of the flat surfaces of the substrate 11 by printing, imprinting, scribing or brushing. Specifically, for example, the substrate 11 is pressed through a textured roller or die to form a first surface 11a having a first texture 11c on the substrate 11. The substrate 11 may have a thickness of 40 μm to 60 μm .

Next, a protective layer 12 is formed on the first surface 11a. The material of the protective layer 12 is not particularly limited, and may include a thermosetting resin, a radiation hardening resin, and an electron beam curing resin. The thermosetting resin may be an acrylic-based resin, an acrylic polyol based resin, a vinyl-based resin, a polyester-based resin, or a ring. An epoxy-based resin or a polyurethane-based resin. The radiation hardening type resin and the electron beam hardening type resin may be formed of a monomer and an oligomer, wherein the monomer may be a methacrylate-based, acrylic acid having a monofunctional, difunctional or polyfunctional group. Acrylate-based, vinyl-based, vinyl-ether based or epoxy-based. The oligomer may be an unsaturated polyester-based, an epoxy acrylate-based, a polyurethane acrylate-based, or a polyester acrylate-based. ), polyether acrylate-based, acrylated acrylic oligomer or epoxy-based resin. For example, a colloid made of at least one of the above materials may be applied to the first surface 11a, and the colloid may be heated or cured to form the protective layer 12. The protective layer 12 may have a thickness of 16 μm to 22 μm .

The protective layer 12 has third and fourth surfaces 12a, 12b opposite to each other, wherein the third surface 12a is in contact with the first surface 11a to form a second texture 12c that is complementary to the first texture 11c. As shown in FIG. 1, the third surface 12a of the protective layer 12 covers the first surface 11a of the substrate 11. In the case where the second texture 12c is directly formed on the protective layer 12, the man-hour of the process can be reduced. In detail, the fourth surface 12b which is not subjected to the three-dimensional grain processing is a flat surface (as shown in FIG. 1).

Next, referring to FIG. 2, a metal-like ink layer 13 is formed on the fourth surface 12b of the protective layer 12. The imitation metal ink layer 13 has fifth and third surfaces 13a, 13b opposed to each other. The fifth surface 13a of the imitation metal ink layer 13 is in contact with the fourth surface 12b of the protective layer 12. As shown in FIG. 2, the fifth surface 13a of the metallic ink layer 13 is overlaid on the fourth surface 12b of the protective layer 12. The imitation metal ink layer 13 is formed by forming an ink composition on the fourth surface 12b of the protective layer 12 by inkjet or printing. The metal-like ink layer 13 may have a thickness of 7 μm to 12 μm .

The ink composition may include mica, color paste, and a solvent.

Mica can increase the brightness but not the conductivity, so there is no shielding effect and the problem of the yield reduction caused by the adsorption of debris. The mica may be organic mica, inorganic mica, or a combination thereof. In terms of luminance and transparency, inorganic mica is preferred. The inorganic mica is, for example, biotite, phlogopite, muscovite, lithium mica, iron lithium mica, or a combination thereof. In the ink composition, the mica content is between about 3 wt% and about 15 wt%, based on 100 wt% of the ink composition.

The color paste is not particularly limited and may be appropriately selected in accordance with the desired color. In the ink composition, the content of the paste is between about 5 wt% and about 25 wt%, based on 100 wt% of the ink composition.

The solvent is not particularly limited as long as the mica, the silver nanowire described later, and the metal described below are uniformly dispersed as a dispersion medium, and mica, a silver nanowire to be described later, and a metal to be described later are not aggregated. Further, the solvent preferably exhibits volatility when the metal-like ink layer 13 is formed. The solvent is, for example, ethyl lactate, ethanol, ethylene glycol, propylene glycol, glycerin, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monomethyl ether acetate, ethylene Alcohol monoethyl ether acetate, ethylene glycol dimethyl ether, Propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol dimethyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether , diethylene glycol diethyl ether, diethylene glycol isopropyl methyl ether, diethylene glycol butyl methyl ether, diethylene glycol dibutyl ether, diethylene glycol methyl ethyl ether, diethylene glycol monoethyl ether Acid ester, dipropylene glycol dimethyl ether, dipropylene glycol monomethyl ether, triethylene glycol dimethyl ether, triethylene glycol monomethyl ether, triethylene glycol divinyl ether, tripropylene glycol monomethyl ether, tripropylene glycol Ether, butanediol monovinyl ether, methyl 3-methoxypropionate, ethyl 3-ethoxypropionate, cyclohexanone, 1,3-dioxolane, 1,4- Dioxane, anisole, methyl benzoate, ethyl benzoate, 1-vinyl-2-pyrrolidone, 1-butyl-2-pyrrolidone, 1-ethyl-2-pyrrolidone , 1-(2-hydroxyethyl)-2-pyrrolidone, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1-ethenyl-2-pyrrolidone, N,N- Diethylacetamide, N,N-dimethylpropanamide, N-methyl-ε-caprolactam, 1,3-dimethyl-2-imidazole Ketones, [gamma] -butyrolactone, or a combination thereof. The solvent may be included in an amount of from 45 to 60% by weight based on 100% by weight of the ink composition.

Preferably, the ink composition further comprises a silver nanowire. Both the silver nanowire and the mica have an appropriate brightness, which allows the transfer film to exhibit a metallic luster and a metallic cooling sensation with good visual effects.

The silver nanowire is, for example, a silver nanowire having an average minor axis length of 1 nm to 150 nm and an average major axis length of 1 μm to 100 μm. The total content of the silver nanowires and mica may be from 3 wt% to 18 wt%, based on 100 wt% of the ink composition. Further, the content of the silver nanowire may be 0.05% by weight to 3% by weight based on 100% by weight of the ink composition, and the content of mica may be 3% by weight to 15% by weight. When the concentration of the silver nanowire is low, The transfer film can be increased in proper brightness without causing a shielding effect on the transfer film; when the silver nanowire concentration is too high, a shielding effect is generated, which is unfavorable for the product to pass the antenna test, and static electricity is generated to adsorb the debris. Yield is reduced.

The ink composition may further include a metal that is low in conductivity or non-conductive. The so-called "low conductivity or non-conductive metal" is a metal having a conductivity of not more than nickel. The metal is, for example, nickel, tin, or a combination thereof. The total content of the silver nanowire, mica, color paste, and metal having a conductivity of not more than nickel may be 10% by weight to 30% by weight based on 100% by weight of the ink composition. Further, the total content of the silver nanowire, mica, and the metal having a conductivity of not more than nickel may be from 3 wt% to 18 wt%, based on 100% by weight of the ink composition. When the silver nanowire, mica, and the total content of the metal having a conductivity of not more than nickel are too small, there is a problem that the metal texture is not good. When the content of silver nanowires and metals is too large, there is a problem of shielding effect.

The ink composition may further include at least one of an additive and a resin.

The resin is not particularly limited as long as the operation of a subsequent process such as inkjet or printing can be facilitated. The content of the resin may be from 25% by weight to 40% by weight based on 100% by weight of the ink composition.

The additive is, for example, a viscosity modifier, a binder, or a combination thereof. The content of the additive may be from 3% by weight to 9% by weight based on 100% by weight of the ink composition.

The viscosity modifier is not particularly limited as long as it can be easily handled by a subsequent process such as inkjet or printing. Examples of the viscosity modifier include cellulose polymers such as carboxymethylcellulose, methylcellulose, and hydroxypropylcellulose, and ammonium salts thereof; and poly(meth)acrylates such as sodium poly(meth)acrylate. ; polyvinyl alcohol, polyepoxy Ethane, polyvinylpyrrolidone, acrylic acid or a copolymer of acrylate and vinyl alcohol, maleic anhydride, maleic acid or a copolymer of fumaric acid and vinyl alcohol, modified polyvinyl alcohol, Modified polyacrylic acid, polyethylene glycol, polycarboxylic acid.

The binder is not particularly limited as long as it can be mixed in the ink composition and exhibits a moderate adhesion.

Finally, referring again to FIG. 3, an adhesive layer 14 is formed on the sixth surface 13b of the imitation metal ink layer 13 to form the transfer film 10. The material of the layer 14 is, for example, an acrylic-based resin, a urethane-based resin, a vinyl-based resin, a polyester-based resin, Polystyrene-based resin, polypropylene-based resin, polyethylene-based resin or polycarbonate-based resin The adhesiveness of the transfer film 10 is obtained. Layer 14 can then have a thickness of from 16 μm to 22 μm . Overall, the transfer film 10 may have a thickness of 79 μm to 116 μm . In addition, in a preferred embodiment, the total thickness of the protective layer 12, the metal-like ink layer 13, and the subsequent layer 14 may be 40 μm to 50 μm , and the thickness ratio of the three is 2:1:2.

Fig. 4 is a cross-sectional view of a decorative molded article 30 according to an embodiment of the present invention. In particular, the thickness or proportion of each layer in Figure 4 is moderately enlarged or reduced for clarity and ease of illustration and does not represent the actual thickness or proportion of each layer. Referring to FIG. 4, the decorative molded article 30 includes a workpiece 20 having a surface 20a and a diaphragm 10a. The diaphragm 10a is disposed on the surface 20a of the workpiece 20, and the film 10a is continued Layer 14 is in contact with surface 20a of workpiece 20. The diaphragm 10a is a sheet formed by removing the substrate 11 from the transfer film 10 and curing the protective layer 12 to form the hardened layer 22.

The workpiece 20 can be an outer casing of an electronic device. The electronic device can be a mobile phone, a notebook or a tablet. The type of electronic device is not limited to the above. The material of the outer casing can be plastic, glass, aluminum, magnesium alloy or carbon fiber reinforced plastic. The magnesium alloy is, for example, a magnesium aluminum alloy or a magnesium lithium alloy. The plastic is, for example, acrylonitrile butadiene styrene (ABS) or polycarbonate (PC). When these shell materials are used as the material of the outer casing, since there are many holes on the surface of the magnesium alloy or the magnesium-lithium alloy, painting and soil filling are required, resulting in an increase in the overall weight of the electronic device. According to the transfer film of the present invention, these outer shell materials can exhibit metallic luster and metallic cooling sensation while reducing the quality of the material to achieve a lightweight effect.

The decorative molded article 30 is preferably manufactured by Out-Mold Release (OMR) in Out-Mold Decoration (OMD) technology.

Hereinafter, the manufacturing process of the decorative molded article 30 of the above embodiment will be further described by taking an overmolding transfer as an example.

First, the workpiece 20 and the transfer film 10 are placed in the jig so that the adhesive layer 10 of the transfer film 10 comes into contact with the surface 20a of the workpiece 20. Next, the transfer film 10 is subjected to a high-pressure transfer molding process so that the transfer film 10 is adhered to the surface 20a of the workpiece 20 via the adhesive layer 14. More specifically, the high-pressure transfer molding process first performs a heating softening step by controlling the temperature of the transfer film 10, and then pressurizing the transfer film 10 to attach the transfer film 10 to the workpiece 20. Table On the surface 20a, the transfer film 10 and the workpiece 20 are then subjected to a high pressure vacuum forming step to transfer the transfer film 10 onto the workpiece 20. Finally, the substrate 11 is removed, and the protective layer 12 is cured by irradiation of ultraviolet rays or heating to form the hardened layer 22; or, the protective layer 12 is first cured by irradiation of ultraviolet rays or heating to form the hardened layer 22 Then, the substrate 11 is removed.

Figure 5 is a cross-sectional view of an apparatus having a transfer film according to an embodiment of the present invention. In particular, the thickness or proportion of each layer in Figure 5 is moderately enlarged or reduced for clarity and ease of illustration, and does not represent the actual thickness or proportion of each layer. Referring to FIG. 5, the apparatus 100 having a transfer film includes a body 110, a housing 120, and a transfer film 130. The outer casing 120 has an inner surface 120a and an outer surface 120b. The outer casing 120 encases the body 110 via an inner surface 120a. An adhesive layer (not shown in FIG. 5) of the transfer film 130 is attached to the outer surface 120b of the outer casing 120. In addition, the device 100 having a transfer film may be an electronic device such as a mobile phone, a notebook computer, or a tablet computer. The outer casing 120 can be plastic, glass, aluminum, magnesium alloy or carbon fiber reinforced plastic. The transfer film 130 is the same as the above-described transfer film 10, and will not be further described herein. In view of the above, since there are many holes in the surface of the magnesium-aluminum alloy or the magnesium-lithium alloy, it is necessary to paint and replenish the soil, resulting in an increase in the overall weight of the device. By the transfer film of the present invention, these outer casings can exhibit a metallic luster and a metallic cooling sensation while reducing the quality of the material to achieve a lightweight effect.

In summary, the transfer film of the present invention comprises at least one of a non-conductive metal-like ink layer containing mica and a low-conductivity or non-conductive metal. Therefore, the transfer film is applied to the loading When the outer casing of the electronic device is decorated, it can exhibit a good metallic luster and a metallic cold feeling without the shielding effect or the lack of metal texture. Further, in the method for producing a transfer film of the present invention, by forming a non-conductive metal-like ink layer, the non-conductive metal-like ink layer exhibits excellent properties because it has a low metal content and does not generate static electricity and adsorbs debris. Yield. Further, in the method for producing a transfer film of the present invention, a single layer of a non-conductive metal-like ink layer is formed, and a metallic luster and a metallic cooling feeling can be exhibited without forming a metal layer by sputtering, thereby being effective. Reduce costs and reduce the quality of materials to achieve a lightweight effect.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

Claims (12)

A transfer film comprising: a substrate having a first surface and a second surface opposite to each other, wherein the first surface has a first texture; a protective layer disposed on the first of the substrate The surface has a third surface and a fourth surface opposite to each other, wherein the third surface is in contact with the first surface, and the third surface has a second texture complementary to the first texture; a non-conductive metal-like ink layer disposed on the fourth surface of the protective layer, wherein the non-conductive metal-like ink layer has a fifth surface and a sixth surface opposite to each other, and the fifth surface Contacting the fourth surface; and an adhesive layer disposed on the sixth surface of the non-conductive metal-like ink layer, wherein the non-conductive metal-like ink layer is formed of an ink composition, the ink composition including Mica, color paste and solvent, and the mica is inorganic mica. The transfer film of claim 1, wherein the ink composition has a content of the mica of between 3% by weight and 15% by weight based on 100% by weight of the ink composition. The transfer film of claim 1, wherein the ink composition further comprises a silver nanowire. The transfer film of claim 3, wherein the ink composition has a total content of the silver nanowire and the mica of from 3 wt% to 18 wt%, based on 100 wt% of the ink composition. The transfer film of claim 3, wherein the ink composition further comprises a metal having a conductivity of not more than nickel. The transfer film of claim 5, wherein the ink composition is 100% by weight of the ink composition, the silver nanowire, the mica, and the metal having a conductivity of not more than nickel The total content is from 3 wt% to 18 wt%. A manufacturing method of a decorative molded article, comprising: placing a workpiece and a transfer film according to any one of claims 1 to 6 in a jig; performing a high-pressure transfer molding The process is such that the transfer film is adhered to the surface of the workpiece via the adhesive layer; the substrate of the transfer film is removed; and the protective layer is cured to form a hardened layer. The method of manufacturing a decorative molded article according to claim 7, wherein the high-pressure transfer molding process comprises: contacting the transfer film with the workpiece, and performing a heating and softening step; And compressing the sheet and the workpiece; and performing a high pressure vacuum forming step on the transfer film and the workpiece to transfer the transfer film to the workpiece. The method for producing a decorative molded article according to claim 7, wherein the workpiece is plastic, glass, aluminum, magnesium alloy or carbon fiber reinforced plastic. A device having a transfer film, comprising: a body; An outer casing having an inner surface and an outer surface, the outer casing covering the body through the inner surface; and the transfer film according to any one of claims 1 to 6, wherein the transfer The adhesive layer of the printing film is attached to the outer surface of the outer casing. The device having a transfer film according to claim 10, wherein the outer casing is made of plastic, glass, aluminum, magnesium alloy or carbon fiber reinforced plastic. A device having a transfer film according to claim 10, wherein the device having the transfer film is a mobile phone, a notebook computer or a tablet computer.