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Screen printing process

A technology of screen printing and screen printing plate, applied in the field of screen printing technology, can solve the problems of ink pattern deformation, uneven coloring of ink, net marks, etc., and achieve the effect of improved printing quality and strong practicability

Active Publication Date: 2015-02-11
SHISHI DECAI CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the actual use of the above-mentioned various processes, there will be long-term problems such as weak photosensitive adhesive, paste, uneven coloring and looseness of ink, deformation of ink pattern, bubble marks, network marks, uneven edges, pinholes, and network blocking. Many thorny problems that have plagued operators since

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of screen printing process of the present invention, embodiment one, comprises the steps:

[0029] (1) Choose a yellow plain woven polyester screen with a mesh number of 250 meshes, and the hole length of the grid is 2.5 times the maximum ink particle size. The yellow polyester screen can reduce the diffuse reflection of the exposure light during printing and improve the exposure accuracy. Higher, the accuracy of the edge line of the ink pattern is higher; use pumice stone and silicone carbide, or silicone carbon compound to be ground into powder, and treat the surface of the screen. The particle size of the powder is less than 20 microns. Clean and dry the screen, this method is a physical method to clean the screen, the process is simple and the cleaning effect is good; use concentrated detergent, apply evenly on both sides of the screen, wipe it repeatedly with a sponge, and then rinse the screen with water , to ensure that there is no residual foam on the scr...

Embodiment 2

[0051] Embodiment two, comprises the steps:

[0052] (1) Choose a yellow plain woven polyester screen with a mesh number of 265, and the hole length of the grid is 3.75 times the maximum ink particle size. The yellow polyester screen can reduce the diffuse reflection of the exposure light during printing, and the exposure accuracy Higher, the accuracy of the edge line of the ink pattern is higher; use pumice stone and silicone carbide, or silicone carbon compound to be ground into powder, and treat the surface of the screen. The particle size of the powder is less than 20 microns. Clean and dry the screen, this method is a physical method to clean the screen, the process is simple and the cleaning effect is good; use concentrated detergent, apply evenly on both sides of the screen, wipe it repeatedly with a sponge, and then rinse the screen with water , to ensure that there is no residual foam on the screen, and avoid being touched by other objects, especially fingers do not t...

Embodiment 3

[0074] Embodiment three, comprises the steps:

[0075] (1) Choose a yellow plain woven polyester screen with a mesh number of 280 meshes, and the hole length of the grid is 5 times the maximum ink particle size. The yellow polyester screen can reduce the diffuse reflection of the exposure light when printing the plate and improve the exposure accuracy. Higher, the accuracy of the edge line of the ink pattern is higher; use pumice stone and silicone carbide, or silicone carbon compound to be ground into powder, and treat the surface of the screen. The particle size of the powder is less than 20 microns. Clean and dry the screen, this method is a physical method to clean the screen, the process is simple and the cleaning effect is good; use concentrated detergent, apply evenly on both sides of the screen, wipe it repeatedly with a sponge, and then rinse the screen with water , to ensure that there is no residual foam on the screen, and avoid being touched by other objects, especia...

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PUM

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Abstract

The invention discloses a screen printing process which roughly comprises the following steps: preparing a screen plate; preparing a photo-sensitive adhesive; applying the photo-sensitive adhesive; exposing; developing; overhauling; trying to print; formally printing. The process is finely improved based on the process steps. According to the screen printing process adopting the technical scheme, the specific process steps are subjected to breakthrough improvement, so that compared with the prior art, the actual problems of non-tight photo-sensitive adhesive, plate pasting, non-uniform and non-fast coloring of printing ink, deformation of a printing ink pattern, bubble impression, mesh marks, irregular edges, pinholes, mesh clogging and the like during actual printing can be effectively avoided, the printing quality is remarkably improved, and the practicality is high.

Description

technical field [0001] The invention relates to the field of printing, in particular to a screen printing process. Background technique [0002] The screen printing process is well known, such as Chinese invention patent CN201210405827.1 disclosing a new process of physical fine anti-dyeing of traditional blue calico, the blue calico production process includes the following steps: pattern design: design according to the printing pattern requirements Pattern; pattern black and white draft production: process the designed pattern into black and white draft reverse film; screen printing plate production: tie nylon screen with wooden frame printing plate or square steel frame printing plate, apply photosensitive glue, and carry out in darkroom Photosensitive, and then save the firm part after photosensitive, and rinse off the opaque part with water; thicken the anti-staining layer of the pattern: use raw lacquer or alkyd varnish to dry three times to form a paint film, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M1/12B41C1/14G03F7/004C09D11/101
Inventor 朱爱红罗晋平
Owner SHISHI DECAI CHEM TECH
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