Special silk-screen printing process

Abstract

The invention discloses a special silk-screen printing process which comprises the following steps: 1) taking an adhesive sticker A and an adhesive sticker B which are the same as a silk screen in size, performing laser printing on the adhesive sticker A and the adhesive sticker B to prepare a pattern to be printed, and the pattern on the adhesive sticker A and the adhesive sticker B is a mirror image pattern; (2) adhering the adhesive sticker A and the adhesive sticker B to the two surfaces of the silk screen, leaving the pattern part on the silk screen, and taking down the rest part from the silk screen; 3) coating the two surfaces of the silk screen with UV glue, and placing the silk screen under an ultraviolet lamp to cure the UV glue; the method comprises the steps of (1) preparing a non-setting adhesive A and a non-setting adhesive B, (2) preparing a non-setting adhesive B, (3) preparing a non-setting adhesive A and a non-setting adhesive B, (4) taking down pattern parts on the non-setting adhesive A and the non-setting adhesive B to form printed patterns on a silk screen, (5) adding blended ink on the silk screen, scraping the ink through the silk screen by a scraper to enable the ink to be transferred to the surface of a printing stock through meshes of the pattern parts, and (6) drying and solidifying the

Description

Technical Field

[0001] The invention relates to the technical field of screen printing, and in particular to a special screen printing process. Background Art

[0002] The screen printing process is currently widely used in the manufacturing process of display panels due to its advantages such as easy operation and low cost. In the screen printing process, the substrate to be printed is first supported by a support table, and then a layer of ink is applied to the surface of the screen printing area, and the screen is placed above the substrate to be printed and aligned with the substrate to be printed. Finally, the scraper is moved horizontally from one side of the screen to the other side of the screen, so that the pressure between the scraper and the screen is used to pass the ink through the screen printing area, thereby forming a pattern corresponding to the scraping area on the substrate to be printed.

[0003] In the prior art, after coating the photosensitive agent on the silk screen, the pattern part is shielded by a shading sheet and then UV-cured. The shading sheet does not distinguish between the uncured part and the uncured part, so it is necessary to perform repeated high-pressure washing. After confirming that the cured part is completely washed, the silk screen is dried, which is cumbersome to operate and complicated in process. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a special screen printing process with a simple process and easy operation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a special screen printing process, comprising the following steps: 1) Laser printing pattern: Take two pieces of self-adhesive sticker A and self-adhesive sticker B of the same size as the screen, and laser print on self-adhesive sticker A and self-adhesive sticker B to prepare the pattern to be printed. The patterns on self-adhesive sticker A and self-adhesive sticker B are mirror images; 2) Screen pattern prefabrication: Stick adhesive A and adhesive B on both sides of the screen, leaving the pattern part on the screen and removing the rest from the screen; 3) UV glue curing: Apply UV glue on both sides of the screen and place the screen under UV light to cure the UV glue; 4) Screen pattern forming: remove the pattern parts on sticker A and sticker B, and form a printed pattern on the screen; 5) Scraper coating: Add the prepared ink to the screen, use a scraper to scrape the ink across the screen, so that the ink is transferred to the surface of the substrate through the mesh of the pattern part; 6) Drying: The pattern is dried and solidified.

[0006] Furthermore, step 5) also includes an automatic ink adding system, which calculates the ink consumption C of a single printing according to the printing consumption W and the number of printing times N; The total number of times M of printing with a single addition of ink is calculated by the ink consumption C for a single printing and the total amount of ink added at one time V; The number of times m of ink printing is collected by a data collector. When the number of times m of ink printing is close to the total number of times M of ink printing, the automatic ink adding system determines that ink needs to be added, and automatically adds ink to the screen.

[0007] Further, when the number of times m of printing of the ink added at a single time is less than the total number of times M of printing of the ink added at a single time by 2-3, the automatic ink adding system automatically adds ink to the screen.

[0008] Furthermore, the UV glue in step 3) comprises epoxy acrylate, modified polymerization monomer, quartz powder, epoxy cationic adhesive, PL-DBN / COU, benzaldehyde-formaldehyde trimer and antioxidant.

[0009] Furthermore, the antioxidant is UVK-PGO.

[0010] The beneficial effects of the present invention are: The screen printing process of the present invention is to paste the self-adhesive sticker A and the self-adhesive sticker B on the screen after laser printing, and then remove the patterns of the self-adhesive sticker A and the self-adhesive sticker B respectively covering the two sides of the screen after the screen is covered with UV glue, so that a printing pattern is formed on the screen, and then printing is performed. The process steps are simple, and compared with the existing method of applying a photosensitive agent to the screen and then washing the uncured part, the process of cleaning and drying the screen is omitted, and the process is simple. DETAILED DESCRIPTION

[0011] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0012] A special screen printing process of the present invention comprises the following steps: 1) Laser printing pattern: Take two pieces of self-adhesive sticker A and self-adhesive sticker B of the same size as the screen, and laser print on self-adhesive sticker A and self-adhesive sticker B to prepare the pattern to be printed. The patterns on self-adhesive sticker A and self-adhesive sticker B are mirror images; 2) Screen pattern prefabrication: Stick adhesive A and adhesive B on both sides of the screen, leaving the pattern part on the screen and removing the rest from the screen; 3) UV glue curing: Apply UV glue on both sides of the screen and place the screen under ultraviolet light to cure the UV glue; the UV glue includes epoxy acrylate, modified polymerization monomer, quartz powder, epoxy cationic adhesive, PL-DBN / COU, benzaldehyde-formaldehyde trimer and antioxidant; the antioxidant is UVK-PGO; 4) Screen pattern forming: remove the pattern parts on sticker A and sticker B, and form a printed pattern on the screen; 5) Scraper coating: Add the prepared ink to the screen, use a scraper to scrape the ink across the screen, so that the ink is transferred to the surface of the substrate through the mesh of the pattern part; 6) Drying: The pattern is dried and solidified.

[0013] Step 5) also includes an automatic ink adding system, which calculates the ink consumption C of a single printing according to the printing consumption W and the number of printing times N; The total number of times M of printing with a single addition of ink is calculated by the ink consumption C for a single printing and the total amount of ink added at one time V; The number of times m of ink printing is collected by a data collector. When the number of times m of ink printing is close to the total number of times M of ink printing, the automatic ink adding system determines that ink needs to be added, and automatically adds ink to the screen.

[0014] Preferably, when the number of times m of printing with the ink added at a single time is less than the total number of times M of printing with the ink added at a single time, the automatic ink adding system automatically adds ink to the screen.

[0015] The screen printing process of the present invention is to paste the self-adhesive sticker A and the self-adhesive sticker B on the screen after laser printing, and then remove the patterns of the self-adhesive sticker A and the self-adhesive sticker B respectively covering the two sides of the screen after the screen is covered with UV glue, so that a printing pattern is formed on the screen, and then printing is performed. The process steps are simple, and compared with the existing process of applying a photosensitive agent to the screen and then washing the uncured part, the process of cleaning and drying the screen is omitted, and the process is simple.

[0016] During printing, the present invention automatically calculates the number of times that ink can be added for printing, and automatically adds ink online.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A special screen printing process, characterized in that: The steps include: 1) Laser printing pattern: Take two pieces of self-adhesive sticker A and self-adhesive sticker B of the same size as the screen, and laser print on self-adhesive sticker A and self-adhesive sticker B to prepare the pattern to be printed. The patterns on self-adhesive sticker A and self-adhesive sticker B are mirror images; 2) Screen pattern prefabrication: Stick adhesive A and adhesive B on both sides of the screen, leaving the pattern part on the screen and removing the rest from the screen; 3) UV glue curing: Apply UV glue on both sides of the screen and place the screen under UV light to cure the UV glue; 4) Screen pattern forming: remove the pattern parts on sticker A and sticker B, and form a printed pattern on the screen; 5) Scraper coating: Add the prepared ink to the screen, use a scraper to scrape the ink across the screen, so that the ink is transferred to the surface of the substrate through the mesh of the pattern part; 6) Drying: The pattern is dried and solidified.

2. A special screen printing process according to claim 1, characterized in that: Step 5) also includes an automatic ink adding system, which calculates the ink consumption C of a single printing according to the printing consumption W and the number of printing times N; The total number of times M of printing with a single addition of ink is calculated by the ink consumption C for a single printing and the total amount of ink added at one time V; The number of times m of ink printing is collected by a data collector. When the number of times m of ink printing is close to the total number of times M of ink printing, the automatic ink adding system determines that ink needs to be added, and automatically adds ink to the screen.

3. A special screen printing process according to claim 2, characterized in that: When the number of times m of printing with the ink added at a single time is less than the total number of times M of printing with the ink added at a single time, the automatic ink adding system automatically adds ink to the screen.

4. A special screen printing process according to claim 1, characterized in that: The UV glue in step 3) comprises epoxy acrylate, modified polymerization monomer, quartz powder, epoxy cationic adhesive, PL-DBN / COU, benzaldehyde-formaldehyde trimer and antioxidant.

5. A special screen printing process according to claim 1, characterized in that: The antioxidant is UVK-PGO.