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Protective glue for waterless offset printing plate making and preparation method thereof

A technology of protective glue and printing plate, which is applied in the direction of coating, protein coating, wax coating, etc., can solve the problems of easy adhesion of dirt on the protective glue layer, easy staining of printed matter, insufficient light transmission, etc., and achieve good Dust-proof effect, not easy to get dirty, suitable for large-scale production

Inactive Publication Date: 2020-10-30
柳州市盛杰彩印有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a waterless offset printing plate-making method for the problems that the protective adhesive layer formed by the materials used in the prior art is easy to adhere to dirt, uneven in thickness, and insufficient in light transmittance, resulting in dirty printed matter. Protective glue and preparation method thereof

Method used

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  • Protective glue for waterless offset printing plate making and preparation method thereof
  • Protective glue for waterless offset printing plate making and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] A protective glue for waterless offset printing, comprising the following raw materials in parts by weight: 19 parts of sumac wax, 5 parts of pigskin, 40 parts of limonene, 10 parts of N-methyl-2-pyrrolidone, 1 part of silicon nitride powder 0.05 parts of carbodiimide, 5 parts of tamarind gum, 2 parts of cycloolefin copolymer, 1 part of polytetrafluoroethylene superfine powder and 0.5 parts of calcium fluoride.

[0030] Wherein, the particle size of silicon nitride powder is 2000nm.

[0031] The preparation method of the above-mentioned protective glue for waterless offset printing plate-making comprises the following steps:

[0032] a. According to the ratio by weight, take sumac wax and pigskin and treat it with microwave at a power of 120W and a temperature of 80°C for 40 minutes, then filter while it is hot, and discard the filter residue to obtain a microwave extract;

[0033] b. According to the weight ratio, take the microwave extract, limonene, N-methyl-2-pyrro...

Embodiment 2

[0038] A protective glue for waterless offset printing, comprising the following raw materials in parts by weight: 31 parts of sumac wax, 15 parts of pigskin, 60 parts of limonene, 20 parts of N-methyl-2-pyrrolidone, 3 parts of silicon nitride powder 0.15 parts of carbodiimide, 15 parts of tamarind gum, 6 parts of cycloolefin copolymer, 3 parts of polytetrafluoroethylene superfine powder and 1.5 parts of calcium fluoride.

[0039] Wherein, the particle size of silicon nitride powder is 3000nm.

[0040] The preparation method of the above-mentioned protective glue for waterless offset printing plate-making comprises the following steps:

[0041] a. According to the ratio by weight, take sumac wax and pigskin and treat it with microwave at a power of 180W and a temperature of 90°C for 60 minutes, then filter while it is hot, and discard the filter residue to obtain a microwave extract;

[0042] b. According to the weight ratio, take microwave extract, limonene, N-methyl-2-pyrro...

Embodiment 3

[0047] A protective glue for waterless offset printing, comprising the following raw materials in parts by weight: 22 parts of sumac wax, 7 parts of pigskin, 45 parts of limonene, 13 parts of N-methyl-2-pyrrolidone, 1.5 parts of silicon nitride powder 0.1 part of carbodiimide, 8 parts of tamarind gum, 3 parts of cycloolefin copolymer, 1.4 parts of polytetrafluoroethylene superfine powder and 0.8 part of calcium fluoride.

[0048] Wherein, the particle size of silicon nitride powder is 2300nm.

[0049] The preparation method of the above-mentioned protective glue for waterless offset printing plate-making comprises the following steps:

[0050] a. According to the ratio by weight, take sumac wax and pigskin and treat it with microwave at a power of 130W and a temperature of 83°C for 45 minutes, then filter while it is hot, and discard the filter residue to obtain a microwave extract;

[0051] b. According to the weight ratio, take the microwave extract, limonene, N-methyl-2-py...

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Abstract

The invention provides protective glue for waterless offset printing plate making and a preparation method thereof, and particularly relates to the technical field of printing plates. Tamarind gum ismodified by adopting an extracting solution of lacquer tree wax and pigskin, and cycloolefin copolymer, polytetrafluoroethylene ultrafine powder and calcium fluoride are then added to prepare the protective glue for waterless offset printing plate making. The protective glue has good wear resistance, good dust resistance and good light transmittance, and after the protective glue is used for waterless offset printing plate making, the printed matter is not easily dirtied, and the printing resistance of the printing plate is improved. The method is stable and controllable in process, easy to implement and suitable for large-scale production.

Description

【Technical field】 [0001] The invention relates to the technical field of printing plates, in particular to a protective glue for waterless offset printing plate making and a preparation method thereof. 【Background technique】 [0002] Waterless offset printing is a flat gravure printing technology. It does not use water or traditional fountain solution during printing, but uses a printing plate with a non-ink-friendly silicone rubber surface, special ink and a set of temperature control system. Because of the use of fountain solution in traditional offset printing, water is involved in the printing process. If the "water-ink balance" is not well grasped, it will bring many quality problems, and the fountain solution and developer used contain volatile organic compounds. It will be discharged into the air during the printing process, causing environmental pollution. Compared with traditional offset printing technology, waterless offset printing has the advantages of excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D191/06C09D189/00C09D105/00C09D145/00C09D127/18C09D7/61C09D7/62C09D7/20C09D7/65C09D7/63
CPCC08K2003/162C08L2205/035C09D191/06C09D7/20C09D7/61C09D7/62C09D7/63C09D7/65C08L89/00C08L5/00C08L45/00C08L27/18C08L1/286C08K9/02C08K9/04C08K3/34C08K3/16C08K5/29
Inventor 张志安胡荣根
Owner 柳州市盛杰彩印有限公司
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