Solvent-based light oil suitable for offset press

A solvent-based, offset printing machine technology, applied in textiles and papermaking, fiber raw material processing, paper coating, etc., can solve the problems of hot stamping, water-based varnish and silk screen printing ink, etc., to reduce ink loss Possibility, bronzing adaptability stability, effect of improving compatibility

Inactive Publication Date: 2015-06-03
SHENZHEN KECAI PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to address the adverse reaction that the water-based varnish is prone to hot stamping due to the change of additives in the prior art, the phenomenon of poor adhesion between the water-based varnish and the screen printing ink, and the existing The solvent-based varnish is only suitable for gravure printing production, and a solvent-based varnish with high bronzing adaptability and screen printing ink adhesion is provided. This solvent-based varnish is especially suitable for offset printing machines and can be directly used for offset printing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a kind of solvent-based varnish suitable for offset printing machine is made of the following raw materials in weight percentage: 15% polyvinyl butyral, 8% rosin modified maleic acid resin, 41.4% ethanol , 5% propylene glycol monoethyl ether, 30% isopropanol and 0.6% palm wax.

[0026] Its preparation method is as follows: weigh each component according to the above weight percentage, then add the weighed polyvinyl butyral, rosin-modified maleic acid resin, ethanol, propylene glycol monoethyl ether, isopropanol and palm wax into a high-speed mixer , stirred at a speed of 3000 rpm for half an hour, so that the components were fully dispersed, and a solvent-based varnish suitable for offset printing machines was obtained.

Embodiment 2

[0027] Embodiment 2, a kind of solvent-based varnish suitable for offset printing machines is made of the following raw materials in weight percentage: 13% polyvinyl butyral, 10% rosin modified maleic acid resin, 40% ethanol , 6% propylene glycol monoethyl ether, 30% isopropanol and 1% palm wax. Its preparation method is the same as that of Example 1, and will not be repeated here.

Embodiment 3

[0028] Embodiment 3, a kind of solvent-based varnish suitable for offset printing machine is made of the following raw materials in weight percentage: 18% polyvinyl butyral, 6% rosin modified maleic acid resin, 45% ethanol , 5.5% propylene glycol monoethyl ether, 25% isopropanol and 0.5% palm wax. Its preparation method is the same as that of Example 1, and will not be repeated here.

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Abstract

The invention discloses solvent-based light oil suitable for an offset press. The solvent-based light oil comprises the components by weight percent of: 13-18% of primary connecting material resin, 6-10% of auxiliary resin, 65-80% of a solvent, 4-6% of an auxiliary solvent and 0.5-1% of an auxiliary agent. The Lower glass transition temperature can be obtained after the solvent-based light oil is dried compared with that by using UV (ultraviolet) light oil in the prior art; the solvent-based light oil is stable in the aspect of hot stamping adaptability; the problem of incomplete hot stamping is not generated; the matching characteristic of the solvent-based light oil with silk printing ink after the solvent-based light oil is applied to the offset press can be improved, and the deinking possibility is reduced due to the fact that the resin with low UV tension is selected by the solvent-based light oil.

Description

technical field [0001] The invention belongs to the technical field of printing and relates to a solvent-based varnish. More specifically, the present invention relates to a solvent-based varnish suitable for offset printing machines, having high bronzing suitability and screen printing ink adhesion. Background technique [0002] In the process of product development, a layer of varnish is usually applied on the surface of the product to improve the brightness and wear resistance of the product surface, and then hot stamping and silk screen printing are used to increase the anti-counterfeiting and process difficulty of the product. The varnish initially applied to the surface of the product is water-based varnish (also known as dispersion varnish), and currently UV varnish (also known as screen printing ink) is also widely used in the production process of offset printing machines. Water-based varnish has the characteristics of colorless, odorless, strong transparency and n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/20D21H19/14D21H19/18
Inventor 李树军张建平陈春华朱宏昆唐瓒
Owner SHENZHEN KECAI PRINTING
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