Water soluble flexible print plate and its producing method

A production method and technology for flexographic printing plates, applied in the field of flexographic printing plates, can solve the problems of prolonged drying time, increased plate-making cost, high damage intensity, etc., and achieve the effects of no environmental pollution, low cost, and good quality effect.

Inactive Publication Date: 2007-01-24
天津市中原印刷科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, 1 gallon of vinyl chloride / butanol solvent can only dissolve 200 grams of photopolymer in the blank part, so a large amount of organic solvent solution for plate washing needs to be consumed
Chloride solvents or high-chlorine substitutes vinyl chloride / butanol solvents contain carcinogens, which are non-biodegradable substances, and they are extremely destructive to the human living environment
Therefore, in the plate making process, it is necessary to add an auxiliary device for vacuum recovery of solvent, and the drying time is extended by more than 1 hour, thereby increasing the cost of plate making

Method used

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  • Water soluble flexible print plate and its producing method

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Embodiment

[0045] As shown in the accompanying drawings, a water-soluble flexo printing plate of the present invention consists of three parts: a polyester film protective layer 1 , a flexible photosensitive resin plate 2 and a polyester film base layer 3 . The composition of the flexible photosensitive resin plate includes: a main polymer composed of 05-88 polyvinyl alcohol, liquid rubber and reagent grade glycerol modifier, a methylol acrylamide crosslinking agent, acrylic acid Hydroxyethyl ester plasticizer, 1173 photosensitizer, p-hydroxyanisole antioxidant and caprolactam auxiliary agent, wherein the 05-88 polyvinyl alcohol in the host polymer is a commercially available low polymerization degree polymer chemical Medicine, it is a kind of water-soluble polymer, no matter in cold water or in hot water, it can dissolve very quickly, and shows its maximum solubility.

[0046] The production method of the flexo printing plate consists of (1), the production of prefabricated photosensiti...

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Abstract

Flexible printing plate consists of protective layer, flexible sensitization resin material for printing plate, and basal layer. Main body of polymer is composed of low polymerization degree 05-88 polyvinyl alcohol, fluid rubber, and glycerin. Being warmed up and mixed round, main body of polymer, crosslinking agent, plasticizer, photosensitizer, and auxiliary agent produces photosensitive resin with high decomposition point. Molding sensitization resin printing plate is prepared through steps: placing photosensitive resin into extruder; carrying out warming up, melting and graining procedures; molding in molding press. Polyester film is stuck on surface and base so as to produce water-soluble solid flexible printing plate. Possessing features of high resolution, good quality, quick plate making, low cost, without pollution, the disclosed printing plate is new printing plate of replacing solvent type printing plate. The disclosed printing plate is applicable to each printing press.

Description

technical field [0001] The invention relates to a flexo printing plate used in the printing industry, in particular to a water-soluble flexo printing plate and a manufacturing method thereof. Background technique [0002] Flexo printing plate refers to a flexible and elastic photopolymerizable letterpress with a hardness of HS30-H560. In the field of modern flexo printing technology, flexo printing plates can be divided into rubber plates and photosensitive resin plates according to plate materials and processing methods. Among them, the photosensitive resin plate is of great significance in the development of modern flexographic plate technology due to its high resolution, high overprint accuracy and high printing durability. [0003] For a long time, in the plate-making process of flexo printing plate, since the latent image of the graphic and text is left on the printing plate after the exposure of the flexographic printing plate, the printing plate is still flat and can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/09B41N1/24
Inventor 赵效杰
Owner 天津市中原印刷科技有限公司
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