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A method of screen printing

A technology of screen printing and screen printing, applied in the field of screen printing, which can solve the problems of ink pattern deformation, uneven ink coloring, uneven edges, etc., and achieve the effect of improving printing quality and strong practicability

Active Publication Date: 2016-07-27
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

[0029] A kind of screen printing method of the present invention, embodiment one, comprises the steps:

[0030] (1) When preparing photosensitive adhesive, bisphenol A epoxy resin, polyvinyl alcohol, melamine modified phenolic resin, dimethyl phthalate, propylene glycidyl ether, sodium carboxymethyl cellulose, N-( 3-Chloro-4-methylphenyl)-N, trimethylolethane, polyoxyethylene sorbitan monolaurate, dimethyl methylphosphonate, anhydrous acetic acid, sodium acetate, ethanol, Water and ammonium dichromate are mixed according to the weight ratio of 85:26.5:9:22:21:5:3:8.5:4:0.45:2.5:0.9:0.7:280:5 and stirred with a non-metallic rod for 9 minutes, Stirring should be carried out in a "∞" shape, and the stirring should not be pulled back and forth. Among them, anhydrous acetic acid and sodium acetate, as well as ammonium dichromate and 20 parts by weight of water in 280 parts by weight are prepared separately and then added to other ingredients together , all the water mentioned abov...

Embodiment 2

[0053] Embodiment two, comprises the steps:

[0054] (1) When compounding glue, bisphenol A epoxy resin, polyvinyl alcohol, melamine modified phenolic resin, dimethyl phthalate, propylene glycidyl ether, sodium carboxymethyl cellulose, N-(3 -Chloro-4-methylphenyl)-N, trimethylolethane, polyoxyethylene sorbitan monolaurate, dimethyl methylphosphonate, anhydrous acetic acid, sodium acetate, ethanol, water , Ammonium dichromate is mixed according to the weight ratio of 90:25:11:20:23.5:4.6:5:8:5:0.35:3:0.8:0.75:260:5.3, and stirred with a non-metallic rod for 10 minutes, stirring It should be carried out in the shape of "∞", and it is not allowed to pull and stir back and forth. Among them, anhydrous acetic acid and sodium acetate, as well as ammonium dichromate and 21 parts by weight of water in 260 parts by weight are prepared first and then added to other ingredients together. All the water mentioned above is distilled water at a temperature of 20°C. This photosensitive adhes...

Embodiment 3

[0077] Embodiment three, comprises the steps:

[0078](1) When compounding glue, bisphenol A epoxy resin, polyvinyl alcohol, melamine modified phenolic resin, dimethyl phthalate, propylene glycidyl ether, sodium carboxymethyl cellulose, N-(3 -Chloro-4-methylphenyl)-N, trimethylolethane, polyoxyethylene sorbitan monolaurate, dimethyl methylphosphonate, anhydrous acetic acid, sodium acetate, ethanol, water , Ammonium dichromate is mixed according to the weight ratio of 93:24:12:19:26:4.5:6.5:7:5.5:0.3:3.4:0.6:0.8:240:5.5, and stirred with a non-metallic rod for 11 minutes, stirring It should be carried out in the shape of "∞", and it is not allowed to pull and stir back and forth. Among them, anhydrous acetic acid and sodium acetate, as well as ammonium dichromate and 22 parts by weight of water in 240 parts by weight are prepared first and then added to other ingredients together. All the water mentioned above is distilled water at a temperature of 10°C. This photosensitive ad...

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PUM

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Abstract

The invention provides a screen printing method. The screen printing method approximately comprises the following steps of proportioning, preparation, transferring of photo-sensitive adhesive to a temporary soft substrate, light exposure, development, preparation of a screen printing template, screen transferring, overhauling, trial printing, formal printing and the like, and the fine improvement is realized on the basis of the steps. By adopting the technical scheme, the screen printing method has the advantages that by adopting breakthrough improvement on the specific steps, compared with the prior art, the actual problems of unfastened photo-sensitive adhesive, filling-in, nonuniform and unfasten coloring of ink, deformation of ink patterns, bubble traces, screen traces, irregular edges, pinholes, screen blockage and the like in the actual printing process are effectively solved; the printing quality is obviously improved, and the practicality is high.

Description

technical field [0001] The invention relates to the field of printing, in particular to a screen printing method. 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 p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M1/12B41M1/30G03F7/12G03F7/16
Inventor 朱爱红罗晋平
Owner SHISHI DECAI CHEM TECH
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