CN101434155B - A method for making texture graphics on board - Google Patents

Abstract

A method for making texture graphics on a plate, the method comprising: (1) making the texture graphics to be made on an initial mold; (2) transcribing the texture graphics made on the initial mold to a production mold; (3) Coat photocurable ink on the production mold that has texture pattern; embossing the photocurable ink onto the board; (5) curing the photocurable ink embossed onto the board, so that the photocurable ink with the pattern pattern is fixed on the board; (6) Separate the sheet from the production mould. Compared with the product of the texture pattern produced by the injection molding method, the method for making texture pattern on the plate of the present invention has fine and varied texture pattern, good light reflection effect, good abrasion resistance, high hardness, and low mold cost.

Description

A method for making texture graphics on board

technical field

The invention relates to a method for making texture graphics, in particular to a method for making texture graphics or signs on boards.

Background technique

With the increasing development of digital products such as mobile phones, people's requirements for the exquisite appearance and decoration of digital products such as mobile phones are also constantly improving. on the product logo.

At present, manufacturers usually use mechanical processing or injection molding for the production of texture graphics. Due to the limitation of the processing method, it is difficult for the mechanical processing method to achieve selective or fine texture graphics. The production of texture graphics by injection molding has high mold costs, and the light reflection effect of the texture graphics produced is poor, and the wear resistance of the texture graphics is not good. Subsequent hardness treatment is required for the texture graphics. The production cycle It is longer, and some manufacturers use hot pressing to directly emboss the texture on the board, but the effect of embossing is poor, and the board is easy to deform.

Contents of the invention

The purpose of the present invention is to provide a method for making selective texture graphics, the texture graphics produced by this method are more delicate and changeable, the light reflection effect is good, the texture graphics have good wear resistance, high hardness, and the plate is not easily deformed , and a new method of making texture graphics on plates with low mold costs.

A method of making texture graphics on a plate of the present invention, the method comprising:

(1) Making the texture graphics to be made on the initial mold;

(2) Transcribing the texture graphics made on the initial mold to the production mold;

(3) Coating light-curable ink on the production mold with textured graphics;

(4) Covering the plate on the production mold coated with photocurable ink, and embossing, so that the photocurable ink with the texture pattern to be made is embossed on the plate;

(5) curing the photocurable ink imprinted on the board, so that the photocurable ink with the pattern pattern is fixed on the board;

(6) Separate the plate from the production mold.

The method for making texture graphics on boards of the present invention can selectively produce texture graphics, and compared with the products of texture graphics produced by injection molding methods, the obtained texture graphics have denser texture graphics and more graphic effects. Delicate and changeable, the light reflection effect is also higher than that of the texture pattern of injection molded parts, the product has good abrasion resistance, high hardness, the plate is not easy to deform, and the mold cost is low.

Description of drawings

Figure 1 is a schematic diagram of a selective texture pattern.

In the figure: 1-textured graphics; 2-non-graphics.

Detailed ways

A method of making texture graphics on a plate of the present invention, the method comprising:

(1) Making the texture graphics to be made on the initial mold;

(2) Transcribing the texture graphics made on the initial mold to the production mold;

(3) Coating light-curable ink on the production mold with textured graphics;

(4) Covering the plate on the production mold coated with photocurable ink, and embossing, so that the photocurable ink with the texture pattern to be made is embossed on the plate;

(5) curing the photocurable ink imprinted on the board, so that the photocurable ink with the pattern pattern is fixed on the board;

(6) Separate the plate from the production mold.

The method of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the initial mold described in (1) above can be a metal plate, and the texture pattern 1 and non-graphics 2 to be made are engraved on the metal plate by laser engraving or chemical etching. Preferably, laser engraving is adopted, that is, laser engraving with a power of 50 watts is used to engrave on a metal plate, and the metal plate is preferably a stainless steel plate.

The initial mold can also be a photoresist plate, and the texture pattern to be produced is made on the photoresist plate by the photolithography method of exposure and development, and then the photoresist plate with the pattern pattern is metallized.

The depth of the pattern engraving can be 5 microns to 500 microns, and the initial mold is completed. Methods such as laser engraving, photolithography or chemical etching are well known to those skilled in the art, and will not be repeated here.

The production mold making described in the above-mentioned (two) is to carry out electroforming with the original mold metal plate with the grain pattern as the master plate of the grain pattern, or carry out the metallization treatment (for example, with gas phase The method of deposition is to plate a thin layer of metal on its surface, such as silver) and then perform electroforming to rip the texture pattern onto the metal nickel plate (production mold).

The principles and operating conditions of the electroforming are well known to those skilled in the art, and are not particularly limited in the present invention. For example, the process of electroforming can be: use the initial mold engraved with the pattern to be made as the cathode of electroforming, use metal nickel as the anode of electroforming, and use 20-50 g/L boric acid, 5-20 g/L Nickel chloride, 200-500 g/L nickel sulfamate, pH 3.0-4.5 solution as electroforming solution, electroforming at a temperature of 40-70°C and a current density of 1-15 A/ ^dm2 A nickel film with a thickness of 30-1000 microns is formed on the initial mold, and then the nickel film is peeled off to obtain the production mold.

According to one embodiment of the present invention, a mixed solution of 30 g/L boric acid, 10 g/L nickel chloride and 300 g/L nickel sulfamate can be used as the electroforming solution at a temperature of 50°C and a current density of 10A /dm ² under the conditions of electroforming to obtain a thickness of 200 microns production mold nickel plate.

The photocurable ink described in (3) above can use UV ink (ultraviolet curable ink) that does not contain volatile solvents and has environmental performance, for example: contains ultraviolet curable resin, defoamer, trimethylolpropane The UV ink of triacrylate, hexanediol diacrylate, UV184 free radical (I) type solid photoinitiator, dispersant and leveling agent, the thickness of ink coating is preferably 10 microns-30 microns. The way of ink coating can be direct coating, screen printing, dispensing or gravure printing known to those skilled in the art, preferably, it can be performed by dispensing.

The boards mentioned in (4) above are plastic boards, usually polycarbonate (PC), polyethylene terephthalate (PET) or polymethyl methacrylate (PMMA) and other plastics are used. Plate, the plate thickness is 0.1 mm-1 mm, preferably polycarbonate (PC) plastic plate.

The mode of described mold embossing is the screen embossing known to those skilled in the art (that is, the direct scraper embossing of silk screen printing machine), also can be the rolling or flat pressing that molding machine carries out to PC plastic plate and production mould, the purpose is Emboss the texture pattern on the production mold coated with UV ink onto the PC plastic sheet and form it perfectly.

As described in (5) above, the photocurable ink embossed on the plate is cured. When the photocurable ink is UV ink, the method of curing treatment is ultraviolet light, that is, the direction of ultraviolet light irradiation In order to irradiate the photocurable ink from the direction of the plate, the light wavelength of the ultraviolet light is 300 nm-380 nm, and the curing energy is 600 mJ/ ^cm2-2000 mJ/ ^cm2 . Preferably, ultraviolet light with a wavelength of 350 nanometers is used for irradiation, and the total energy is 900 mJ/cm ² .

As described in (6) above, the plate is separated from the production mold. After the UV ink on the mold is cured by ultraviolet rays, the adhesion between the UV ink and the plate is much greater than the adhesion between it and the metal mold, so it can be conveniently done manually. Separating the sheet from the production mold, the texture pattern on the sheet is completed and the finished product is obtained by punching, cutting or profiling.

The method for making texture graphics on the plate of the present invention can selectively make texture graphics, and the mold cost is low, and the UV ink that adopts is a kind of environmental protection printing ink that develops rapidly in recent years, and UV ink is in ultraviolet (UV) light Under the irradiation of UV light, it can be cured instantly and does not contain volatile solvents; the method of dispensing coating and screen printing can make the coating of UV ink more uniform, and the texture graphics produced by the printing will be denser and the graphics effect will be better. It is more delicate and changeable, and the light reflection effect is good; after the graphics are cured by ultraviolet light equipment, the texture graphics have good abrasion resistance and high hardness, and the texture graphics can produce a unique visual effect, which looks elegant, solemn and luxurious . Therefore, the method for making the pattern pattern can be widely applied to products such as mobile phone windows, keys, navigation keys or product signs, and is suitable for mass production.

Claims (10)

1. the method for a manufacturing grain patterns on sheet material is characterized in that, this method comprises:

(1) texture pattern that will be to be made is produced on the initial mould;

(2) with the texture pattern pirate recordings made on the initial mould to production mould;

(3) on having the production mould of texture pattern, pirate recordings is coated with light curable ink;

(4) sheet material is covered on the production mould that is coated with light curable ink, and impress, the light curable ink with texture pattern to be made is impressed on the described sheet material;

(5) light curable ink that is impressed on the sheet material is cured processing, the light-curable ink with described texture pattern is fixed on the described sheet material;

(6) sheet material and production mould are separated.

2. method according to claim 1 is characterized in that, described initial mould is a metallic plate, adopts the texture pattern that laser engraving or chemical etching will be to be made to carve on this metallic plate.

3. method according to claim 1 is characterized in that, described initial mould is a photoresist sheet, adopts the texture pattern that the exposure imaging method will be to be made to be produced on the photoresist sheet, and the photoresist sheet that then this is manufactured with texture pattern carries out metalized.

4. according to claim 2 or 3 described methods, it is characterized in that, by electrocasting with the texture pattern pirate recordings of carving on the initial mould to production mould.

5. method according to claim 4, it is characterized in that, the process of described electroforming comprises: the initial mould of the texture pattern that remains to be made with engraving is as the negative electrode of electroforming, with the anode of metallic nickel as electroforming, to contain 20-50 grams per liter boric acid, 5-20 grams per liter nickel chloride, 200-500 grams per liter nickel sulfamic acid, pH is that the solution of 3.0-4.5 is as electroforming solution, at 40-70 ℃ temperature and 1-15A/dm ²The condition of current density under electroforming be the nickel film of 30-1000 micron on described initial mould, generating thickness, this nickel film is peeled off obtained described production mould then.

6. method according to claim 1 is characterized in that, described light curable ink is a ultraviolet curable ink.

7. method according to claim 6 is characterized in that, the mode of coating printing ink is the mode of direct coating, serigraphy, some glue, and the thickness of printing ink coating is the 10-30 micron.

8. preparation method according to claim 1 is characterized in that, described screen printed, roll-in or the concora crush of being embossed to.

9. preparation method according to claim 1 is characterized in that, described sheet material is Merlon, PETG or polymethyl methacrylate.

10. method according to claim 9 is characterized in that, the thickness of described sheet material is the 0.1-1 millimeter.