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Screen printing photosensitive emulsion and production method thereof

A technology of screen printing and production method, which is applied to the field of screen printing photosensitive adhesive and its production, can solve the problems of diazo photosensitizers, such as short shelf life in high temperature weather, complicated use methods, easy occurrence of accidents, etc., and achieves non-toxic and pollution-free The effect of operation, fast photosensitive speed and strong wear resistance

Inactive Publication Date: 2011-01-26
WUQIANG WUHUAN PRINTING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product has the following defects: First, the materials selected for the diazo sensitizer are: RT base, zinc chloride, sodium nitrate, paraformaldehyde are poisonous, anhydrous ethanol, sulfuric acid, etc., almost all of which are dangerous goods, during the production process Waste gas is generated, which pollutes the environment very seriously, is not conducive to environmental protection, and is prone to accidents in production; second, the diazo photosensitizer has a short shelf life in high temperature weather. Soaking and other processes, the use method is complicated and cumbersome; third, the sensitivity is poor and the exposure time is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The first step, weigh 100 kg of polymer vinyl acetate emulsion, 23 kg of PVA-2488, 8 kg of leveling agent, 8 kg of preservative, 12 kg of antioxidant, 12 kg of polymerization inhibitor, 24 kg of styrene pyridinium salt, 7 kg of color paste, 45 kg of water,

[0060] In the second step, first mix the polymer vinyl acetate emulsion and PVA-2488 into the reaction kettle with a stirring mechanism. minute;

[0061] In the third step, put the leveling agent into the reactor, control the speed of the stirring mechanism in the reactor at 430Hz, and stir for 85 minutes;

[0062] The fourth step is to put the preservative into the reaction kettle, control the rotation speed of the stirring mechanism in the reaction kettle at 490Hz, control the temperature at 35°C, and stir for 55 minutes;

[0063] The fifth step is to put antioxidant into the reactor, control the rotation speed of the stirring mechanism in the reactor at 540Hz, control the temperature at 35°C, and stir for 25 mi...

Embodiment 2

[0069] In the first step, weigh 100 kg of polymer vinyl acetate emulsion, 27 kg of PVA-2488, 10 kg of polyether modified siloxane, 10 kg of ADD APT K55 preservative, tetrakis[methyl-β-(3,5- Di-tert-butyl-4-hydroxyphenyl) propionate] 15 kg of pentaerythritol ester, 15 kg of polymerization inhibitor, 26 kg of styrene pyridinium salt, 10 kg of color paste, 55 kg of water,

[0070] In the second step, first mix the polymer vinyl acetate emulsion and PVA-2488 into a reactor with a stirring mechanism. minute;

[0071] In the third step, put the leveling agent into the reactor, control the speed of the stirring mechanism in the reactor at 470Hz, and stir for 95 minutes;

[0072] The fourth step is to put the preservative into the reaction kettle, control the rotation speed of the stirring mechanism in the reaction kettle at 510Hz, control the temperature at 38°C, and stir for 65 minutes;

[0073] The fifth step is to put antioxidant into the reaction kettle, control the rotation sp...

Embodiment 3

[0080] In the first step, weigh 100 kg of polymer vinyl acetate emulsion, 25 kg of PVA-2488, 9 kg of polyether modified siloxane, 9 kg of ADD APT K55 preservative, tetrakis[methyl-β-(3,5- Di-tert-butyl-4-hydroxyphenyl) propionate] 13 kg of pentaerythritol ester, 13 kg of polymerization inhibitor, 25 kg of styrene pyridinium salt, 9 kg of color paste, 50 kg of water,

[0081] In the second step, first mix the polymer vinyl acetate emulsion and PVA-2488 into a reactor with a stirring mechanism. minute;

[0082] In the third step, put the leveling agent into the reactor, control the speed of the stirring mechanism in the reactor at 450Hz, and stir for 90 minutes;

[0083] The fourth step is to put the preservative into the reaction kettle, control the rotation speed of the stirring mechanism in the reaction kettle at 500Hz, control the temperature at 37°C, and stir for 60 minutes;

[0084] The fifth step is to put antioxidant into the reactor, control the rotation speed of the ...

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PUM

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Abstract

The invention belongs to the technical field of screen printing photosensitive emulsions and production methods thereof, and discloses a screen printing photosensitive emulsion and a production method thereof. The screen printing photosensitive emulsion is mainly characterized technically by comprising the following materials in part by weight: 100 parts of polymer polyvinyl acetate emulsion, 23 to 27 parts of PVA-2488, 8 to 10 parts of flatting agent, 8 to 10 parts of preservative, 12 to 15 parts of antioxidant, 12 to 15 parts of polymerization inhibitor, 24 to 26 parts of styrene pyridine salt, 7 to 10 parts of color paste, and 45 to 55 parts of water. When in use, the screen printing photosensitive emulsion can be used at any time without adding a photosencitizer, saves fussy processes such as dosing, defoaming and the like, and saves plate making time. The photosensitivity of the screen printing photosensitive emulsion is 3 to 5 times higher than that of a diazo photosensitive emulsion; and the exposure time thereof is about 1 / 2 to 1 / 5 of that of the diazo photosensitive emulsion. The screen printing photosensitive emulsion saves energy source, reduces cost, is an ST screen plate-making material, has the characteristics of stable performance, high photosensitive speed, high resolution, high abrasion, no toxicity, no pollution, simple operation and the like, can be preserved for over 3 years in a high-temperature humid environment, and has the advantages of high film strength, high printing resistance, high plate-making precision, high resolution and the like.

Description

technical field [0001] The invention belongs to the technical field of screen printing photosensitive materials and production methods thereof, and in particular relates to a screen printing photosensitive adhesive and a production method thereof. Background technique [0002] SG screen printing photosensitive plate-making materials are photosensitive plate-making materials based on nitrogen resin photosensitizers, which are divided into water-resistant and oil-resistant types. Micro-reactors are used for low-temperature and high-speed stirring reactions, and the reaction temperature is strictly controlled at 0 degrees. Finally, they are fully cleaned with detergent. Suction filtration and vacuum drying generate diazo photosensitive agent, which is diazo photosensitive plate-making material in the mixture of white latex and PVA resin. This product has the following defects: First, the materials selected for the diazo sensitizer are: RT base, zinc chloride, sodium nitrate, pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/004
Inventor 陈志英
Owner WUQIANG WUHUAN PRINTING MATERIAL
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