WO2008154772A1 - Method for forming there-dimensional grain on the plastic patch and such products - Google Patents

Abstract

A method for forming the three-dimensional grain (3) on the plastic patch (1) and products thereof are provided. In the method, a mold is provided in advance, on the mold being set the three-dimensional grain (3). Then a light-cured colloid layer (2) is coated on the three-dimensional grain (3) of the mold. A plastic patch (1) is laid on the light-cured colloid layer (2). After being rolled and leveled up the plastic patch (1) is light cured and released from the mold, and thus obtaining a plastic patch (1) having a light-cured colloid layer (2) with the three-dimensional grain (3). A light-disturbed coating (4) is formed on the plastic patch (1) having a light-cured colloid layer (2) with the three-dimensional grain (3) by vacuum electroplating or directly spray coating. After the film formed, the side of the plastic patch (1) with light-disturbed colloid layer (2) is put in the mold where the light-cured colloid is injected, and then rolled and light cured and released from the mold, so that another light-cured layer (5) with level surface is formed on the light-disturbed coating (4), thus obtaining the product of a plastic patch (1) with three-dimensional grain (3).

Description

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a product for forming a 3D grain on a plastic sheet, which is widely used in processing fields such as lenses, keys or windows of electronic and communication products. BACKGROUND OF THE INVENTION When some electronic and communication products (such as mobile phones/PHS lenses, buttons, windows), household appliances (such as window panels, button panels, decorative panels) and the like need to be decorated accordingly, the main design is to form different lines. One of the traditional methods of forming lines is usually direct surface printing, surface coating, direct plating or two-color injection molding. These methods are difficult to form a consistent color pattern on various curved surfaces, curved surfaces or inclined surfaces. The process is clearly not suitable for today's needs.

 At present, there are several cases of forming a texture on a plastic sheet, one of which is an In-Mold Decorat ion injection molding decorative technique, which puts a printed decorative sheet into an injection mold, and then A technique in which a resin is injected on the back surface of a molded sheet to bond the resin and the sheet together to form a solid. The second is IML (IN-MOUld-Lable) forming technology, which is roughly the same as IMD, except that after injection, f l im is pulled out like a stamped strip, just transferring the printed pattern onto the plastic part. The third is IMR (In Molding Roller) molding technology, which is to put the printed film into a metal mold, automatically convey the positioning by the foil feeding machine, and then inject the molding resin into the metal mold. The film is joined to separate the pattern originally printed on the film from the film, and is transferred to a forming method in which the resin is integrated. However, all of the above have drawbacks such as cumbersome process flow and low production efficiency. Although IMR can automate and mass-produce the advantages, but the formed printed pattern layer is even a few micrometers on the surface of the product, the printed pattern layer is easily worn away and fades, resulting in a very unattractive surface, which leads to a large number of Defective products are produced. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a product for forming a 3D grain having a good decorative effect on a surface and a method of processing the same.

 In order to achieve the above object, the present invention adopts the following technical solutions:

 A method of forming a 3D grain on a plastic sheet, the steps of which are as follows:

 (1) Preparing a mold in advance, the mold is provided with a 3D grain;

(2) coating a photo-curable colloid layer on the 3D textured surface of the above mold; (3) laying a layer of plastic sheet on the photo-curable colloid layer, and performing smoothing after rolling;

 (4) demolding after photo-solidification, that is, a photo-curable colloid layer having a 3D grain is formed on the plastic sheet;

 (5) forming a light interference coating on the photo-curable colloid layer of the 3D grain of the plastic sheet;

 (6) After film formation, the side of the plastic sheet with the light interference coating is reversed in a mold filled with a photocurable colloid, and finally rolled, photo-solidified, demolded, and further formed on the light interference coating. The other surface of the photo-curable colloid layer, along with the resulting plastic sheet, forms a 3D finished product.

 The light interference coating formed above is made by vacuum plating or direct spraying.

 The photocurable monthly cross body is a UV ink or a coating.

 The 3D texture includes a pattern, a letter, a pattern or a symbol.

 A product having a 3D grain on a plastic sheet, which in turn includes -.

 a plastic sheet layer;

 a photo-curable colloid layer having a 3D grain, which is disposed on a plastic sheet layer, and wherein

The 3D grain is adhered to the plastic sheet layer;

 a light interference coating disposed on the photocurable colloid layer; and a photocurable colloid layer for forming a protective film and having a smooth surface, which is disposed on the light interference coating.

 The above light interference coating is a vacuum plating layer or a spray coating layer.

 The photocurable colloid layer is a UV ink layer or a coating layer.

 The 3D texture includes a pattern, a letter, a pattern or a symbol.

 The invention has the beneficial effects of forming a 3D (stereo) grain photo-curable colloid layer and a plastic sheet, and then sequentially forming a corresponding light interference layer and reinforcing the surface of the other surface to form a photo-curable colloid layer. The method further forms a 3D (stereo) texture with good decorative effect on the surface of the plastic sheet, which gives a better visual effect to the people, and thus is highly decorative and ornamental; and the processing method provided by the invention is simple and easy Operation and implementation. The invention can be used to make mobile phone/PHS lenses, buttons, windows, and window panels, button panels, decorative panels, etc. in home appliances. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the process flow of the present invention;

 Figure 2 is a schematic view showing the structure of the product of the present invention;

 3 is a schematic view showing the structure of the forming line applied to the window according to the present invention;

 4 is a schematic view showing the structure of the present invention applied to a button on a button;

Fig. 5 is a schematic view showing the structure of the structure of the invention applied to the window and the button. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further described below in conjunction with the drawings and specific embodiments.

 • Referring to FIG. 1 , a method for forming a 3D grain on a plastic sheet, a mold prepared in advance, wherein the mold is formed with a 3D grain; a photo-curable colloid layer is coated on the 3D grain surface of the mold; A layer of plastic sheet is laid on the photo-curable colloid layer, and the roller is pressed and flattened to perform photo-solidification; after photo-solidification, the mold is removed, and a photo-curable colloid layer (UV ink layer or coating) having a 3D grain is formed on the plastic sheet. Then forming a light interference coating on the photo-curable colloid layer of the plastic sheet having a 3D grain by vacuum plating or direct spraying; after forming the film, the side of the plastic sheet having the light interference coating is buckled In the mold of the photocurable colloid, finally, rolling, photo-solidification, demolding, and further forming a flat surface photo-curable colloid layer (UV ink layer or coating) on the light-interference coating, which is used for preventing The light interference layer is abraded and filled in the uneven surface formed in the above-described process for forming a 3D grain; therefore, a finished product having a 3D grain is formed on the plastic sheet.

 Referring to FIG. 2, a product having a 3D texture is formed on a plastic sheet, wherein: a plastic sheet layer 1 is included;

 a photocurable colloid layer (UV ink layer or coating) 2 having a 3D grain 3, which is disposed on the plastic sheet layer 1 and wherein the 3D grain 21 is adhered to the plastic sheet layer 1;

 A light interference coating 4 is disposed on the photocurable colloid layer (UV ink layer or coating) 2; the light interference coating 4 is a vacuum plating layer or a spray coating layer.

 a photocurable colloid layer (UV ink layer or coating) 5 for forming a protective film and having a flat surface, which is disposed on the above-mentioned light interference coating 3 for preventing the light interference layer from being worn and filled in the above formation The uneven surface formed in the process of 3D texture.

 Referring to FIG. 3, it is a schematic diagram of a structure for forming a texture on a window; this application example is formed into a shape of a window 10 by the above-mentioned product, wherein the window 10 also has a 3D texture 3, so that the window 10 It gives people a better visual effect and is therefore very decorative and ornamental.

 4 is a schematic view of a structure for forming a pattern on a button according to the present invention; the forming method is similar to that of the above embodiment, except that the sheet is cut into a button 20 instead of the window 10 structure. The button 20 also has a 3D grain 3, and the forming process is the same as that of the above embodiment, and the description will not be repeated here.

 Referring to FIG. 5 , it is a schematic diagram of the structure of the formed texture on the window and the button; the same embodiment is similar to the above embodiments, except that the embodiment is that the sheet is cut into a set window and the buttons are integrated. The structure of the sheet material 30 also has a 3D texture 3 on the sheet 30, and the method of forming the texture is the same as the above two embodiments, and no further description is given here.

The 3D texture mentioned in the above embodiments and application examples includes a pattern, a letter, a pattern or a symbol. In summary, the application examples show that the beneficial effects of the present invention are achieved by combining a UV ink layer that first forms a 3D (stereo) texture with a plastic sheet, and then sequentially forming a corresponding light interference layer and another UV ink layer for reinforcement protection. The characteristic process method further forms a 3D (stereo) texture with good decorative effect on the surface of the plastic sheet, which brings better visual effects to the people, and thus is highly decorative and ornamental; and the processing method provided by the invention is simple Easy to operate and implement.

As described above, only the present invention forms a pattern having a 3D visual effect on a plastic sheet.

Modifications, equivalent changes and modifications are still within the scope of the technical solutions of the present invention.

Claims

Rights request 1. A method of forming a 3D grain on a plastic sheet, the method comprising: the steps are as follows:  (1) Preparing a mold in advance, the mold is provided with a 3D grain;  (2) coating a photo-curable colloid layer on the 3D textured surface of the above mold;  (3) laying a layer of plastic sheet on the photo-curable colloid layer, and performing smoothing after rolling;  (4) demolding after photo-solidification, that is, a photo-curable colloid layer having a 3D grain is formed on the plastic sheet;  (5) forming a light interference coating on the photo-curable colloid layer of the 3D grain of the plastic sheet;  (6) After film formation, the side of the plastic sheet with the light interference coating is reversed in a mold filled with a photocurable colloid, and finally rolled, photo-solidified, demolded, and further formed on the light interference coating. The other surface of the photo-curable colloid layer, along with the resulting plastic sheet, forms a 3D finished product.  A method of forming a 3D grain on a plastic sheet according to claim 1, wherein: said light interference coating layer is formed by vacuum plating or direct spraying.  A method of forming a 3D grain on a plastic sheet according to claim 1 or 2, wherein the photocurable colloid is a UV ink or a coating.  A method of forming a 3D grain on a plastic sheet according to claim 1 or 2, wherein: said 3D grain comprises a pattern, a letter, a pattern or a symbol.  5. A product according to claim 1 for forming a 3D grain on a plastic sheet, comprising:  a plastic sheet layer;  a photo-curable colloid layer having a 3D grain, which is disposed on a plastic sheet layer, and wherein The 3D grain is adhered to the plastic sheet layer;  a light interference coating disposed on the photocurable colloid layer; and a photocurable colloid layer for forming a protective film and having a smooth surface, which is disposed on the light interference coating.  6. A product having a 3D grain on a plastic sheet according to claim 5, wherein: said light interference coating is a vacuum plating layer or a spray coating layer.  A product having a 3D grain on a plastic sheet according to claim 5 or 6, wherein the photocurable colloid layer is a UV ink layer or a paint layer.  8. A 3D textured product formed on a plastic sheet according to claim 5 or 6, wherein: said 3D texture comprises a pattern, a letter, a pattern or a symbol.