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Elastomer composition for washing flexographic plate and washing flexographic plate containing same

A technology for washing flexible and elastic bodies, which is applied in the field of washing flexographic plates and elastomer compositions for washing flexographic plates, and can solve the problems such as the decrease of printing durability and ink affinity of plates.

Active Publication Date: 2019-12-10
LUCKY HUAGUANG GRAPHICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above water-washable flexible plate technology solves the problem of water development of the plate, but at the same time brings a negative effect, that is, the printing durability and ink affinity of the plate decrease
Water developability, printing durability and ink affinity of water-washed flexographic plates are a set of contradictory issues, which improves the water dominance of the plate, often sacrificing the printing durability and ink affinity of the plate

Method used

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  • Elastomer composition for washing flexographic plate and washing flexographic plate containing same
  • Elastomer composition for washing flexographic plate and washing flexographic plate containing same
  • Elastomer composition for washing flexographic plate and washing flexographic plate containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Polymer A1: 77g, urethanized double bond polybutadiene (structure I, Mw=1000, Nippon Soda) 10g, 1,6-hexanediol diacrylate (Tianjiao) 2g, hydroxyethyl methacrylate (Mitsubishi Rayon) 4g, dipentaerythritol triacrylate (Sartomer) 5g, initiator 651 (Jingjiang Hongtai Chemical) 1g, Neozapon-red395 (BASF) 0.5g, 2,6-Ditert-butyl p-cresol ( Nanjing Jiulong Chemical Industry) 0.1g, tertiary alkyl ethoxylamine (Liancarb Chemical) 0.1g, Tween 20 (Foshan Keqi Chemical Industry) 0.3g.

[0088]Plate performance: washing rating: 3 stars; ink affinity index: 10; 125lpi dot reduction: 2%-98%; independent dot: 0.2mm; independent line: 0.1mm, printing times: 420,000.

Embodiment 2

[0090] Polymer A2: 45g, urethanized double bond polybutadiene (structure II, Mw=5000, Zibo Qilong) 30g, 1,6-hexanediol diacrylate (Tianjiao) 12g, hydroxyethyl methacrylate (Mitsubishi Rayon) 5g, dipentaerythritol triacrylate (Sartomer) 13g, initiator 651 (Jingjiang Hongtai Chemical Industry) 5g, Neozapon-red395 (BASF) 2g, 2,6-Ditert-butyl p-cresol (Nanjing Jiulong Chemical Industry) 1g, tertiary alkyl ethoxy amine (Liancarb Chemical) 1g, Tween 20 (Foshan Deke Gas Chemical) 1g.

[0091] Plate performance: washing rating: 5 stars; ink affinity index: 7; 122lpi dot reduction: 2%-98%; independent dot: 0.2mm; independent line: 0.1mm, printing times: 280,000.

Embodiment 3

[0093] Polymer A3: 76g, urethanized double bond polybutadiene (structure III, Mw=1500, Nippon Soda) 5g, urethanized double bond polybutadiene (structure I, Mw=2000, Nippon Soda) 5g, 1,6-hexanediol diacrylate (Tianjiao) 2g, hydroxyethyl methacrylate (Mitsubishi Rayon) 5g, Satomer399 (Sartomer) 1g, initiator 651 (Jingjiang Hongtai Chemical) 1g, Neozapon- Red395 (BASF) 2g, 2,6-di-tert-butyl-p-cresol (Nanjing Jiulong Chemical Industry) 1g, tertiary alkyl ethoxyamine (Liancarb Chemical) 1g, Tween 20 (Foshan Deke Gas Chemical) 1g.

[0094] Plate performance: washing rating: 4 stars; 125lpi dot reduction: 2%-98%; independent dot: 0.2mm; independent line 0.1mm, printing times: 300,000.

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Abstract

The invention relates to an elastomer composition used for a water washing flexographic plate. The elastomer composition contains a water-soluble copolymer with the branched chain being grafted with an active urethanated double bond, liquid polybutadiene with the end being grafted with an urethanated double bond, an unsaturated monomer containing at least one double bond, a photopolymerization initiator, a dye and other additives. The water washing flexographic plate has excellent press life and affinity for ink.

Description

technical field [0001] The invention belongs to the technical field of letterpress printing, and in particular relates to an elastomer composition for washing a flexographic plate and a washing flexographic plate containing the elastomer composition. Background technique [0002] In recent years, flexible photosensitive resin plates have been widely used in the printing of cartons, flexible packaging, labels and other easily deformed or soft substrates. At present, the technology of ordinary flexible photosensitive resin plates is mature. Large foreign companies such as DuPont, Asahi, Medallion, and Flint, and domestic Lekai Huaguang Printing Technology Co., Ltd. produce plates. Ordinary flexible photosensitive resin plates need to be developed with solvents, and the waste solvents produced will have adverse effects on the production, use and operators' physical and mental health, and at the same time cause pollution to the surrounding environment. With the rapid increase of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/027G03F7/004
Inventor 宋小伟张涛高英新张刚邵国安张攀李喜乐马天如
Owner LUCKY HUAGUANG GRAPHICS
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