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A kind of washing flexographic plate support body and preparation method thereof

A water-washable flexible and support technology, which is applied in the field of flexographic plates, can solve the problems of reduced adhesion, long storage time, and complicated manufacturing process, and achieve the effect of enhanced adhesion and excellent adhesion

Active Publication Date: 2021-10-15
LUCKY HUAGUANG GRAPHICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, printed plates generally need to be reused many times, and the storage time in the middle is longer, requiring long-term storage and repeated use. The relief layer and the substrate cannot fall off or peel off.
[0007] U.S. Patent US2008166658A discloses the treatment technology of polyester support for resin plates. The polyester body is coated with polyester resin and acrylic resin coating on one side to increase the adhesion between photosensitive resin and support, and the other side is coated with antistatic agent. It has quite excellent antistatic ability, but its manufacturing process is very complicated, but with the increase of exposure or long-term storage, its adhesion tends to decline

Method used

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  • A kind of washing flexographic plate support body and preparation method thereof
  • A kind of washing flexographic plate support body and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Substrate: 0.25mm polyester film (produced by Lucky Huaguang Company), anti-halation treatment.

[0044] Bottom layer: 250ml of deionized water, 45ml of NPR-5 latex (manufactured by Lucky Huaguang Company), 3ml of 10% sodium hydroxide, 2ml of surfactant Fc-4430 (manufactured by 3M Company), stirred at room temperature for 1 hour to obtain the bottom layer latex solution. Coat the bottom layer emulsion on a 0.25mm polyester film (produced by Lucky Huaguang Company) at a speed of 30m / min, and dry it at 110°C for 5 minutes to obtain a bottom layer with a thickness of about 1 μm.

[0045] Adhesive layer: -(X)-(Y)-(Z)-unsaturated water-soluble copolymer 30g, wherein each mole of unsaturated water-soluble copolymer contains 1mol X, 4mol Y, 5mol Z, unsaturated double bond The number of moles is 12mol. 250g of isopropanol, 75g of deionized water, 8g of pentaerythritol triacrylate, 1g of 1-hydroxycyclohexyl phenyl ketone, 0.6g of 2,6-di-tert-butyl p-cresol, 0.4 of Fc-4430 (man...

Embodiment 2

[0047] Substrate: same as embodiment 1

[0048] Bottom layer: same as embodiment 1

[0049] Adhesive layer: -(X)-(Y)-(Z)-unsaturated water-soluble copolymer 30g, wherein each mole of unsaturated water-soluble copolymer contains 2mol X, 3mol Y, 5mol Z, unsaturated double bond The number of moles is 13 mol. 250g of isopropanol, 75g of deionized water, 10g of pentaerythritol triacrylate, 1g of 1-hydroxycyclohexyl phenyl ketone, 0.6g of 2,6-di-tert-butyl p-cresol, 0.4 of Fc-4430 (manufactured by 3M Company) g. Under the yellow light of safety light, it was sealed and stirred at 80° C. for 1 hour to obtain the adhesive layer emulsion. Coat the primer emulsion with the speed of 20m / min on the above-mentioned dried bottom film, and dry at 110°C for 5 minutes to obtain a bonding layer with a thickness of about 2 μm, which is ready for use.

Embodiment 3

[0051] Substrate: same as embodiment 1

[0052] Bottom layer: same as embodiment 1

[0053] Adhesive layer: -(X)-(Y)-(Z)-unsaturated water-soluble copolymer 30g, wherein each mole of unsaturated water-soluble copolymer contains 3mol X, 2mol Y, 5mol Z, unsaturated double bond The number of moles is 14mol. 250g of isopropanol, 75g of deionized water, 12g of pentaerythritol triacrylate, 1g of 1-hydroxycyclohexyl phenyl ketone, 0.6g of 2,6-di-tert-butyl p-cresol, 0.4 of Fc-4430 (manufactured by 3M Company) g. Under the yellow light of safety light, it was sealed and stirred at 80° C. for 1 hour to obtain the adhesive layer emulsion. Coat the primer emulsion with the speed of 20m / min on the above-mentioned dried bottom film, and dry at 110°C for 5 minutes to obtain a bonding layer with a thickness of about 2 μm, which is ready for use.

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Abstract

The invention discloses a water-washable flexographic support body. The water-washable flexible plate support body consists of a base material, a bottom layer and an adhesive layer in sequence from bottom to top. The adhesive layer includes -(X)-(Y)-(Z)- Structure of unsaturated water-soluble copolymers, where X represents styrene, Y represents acrylonitrile, Z represents a hydrophilic polyethoxy copolymer containing esterification units. Due to the adoption of the above structure and preparation method in the present invention, the bonding force between the support body and the photosensitive layer is significantly strengthened after exposure and plate making, and the relief image can be preserved for a long time. The above-mentioned water-washable flexible resin plate is cross-linked with the bonding layer of the support while exposing to form relief graphics during plate making, and the bonding layer and the relief layer are integrated. Since the bonding layer and the bottom layer are also integrated, the relief graphics layer and the bottom layer are also integrated The bonding strength of the support is excellent, and the result is that the resin plate will not fall off after long-term storage.

Description

technical field [0001] The invention belongs to the technical field of flexographic plates, and in particular relates to a water-washable flexographic plate support and a preparation method thereof. Background technique [0002] With the continuous development of science and technology, the advantages of flexo printing in the printing industry have gradually become prominent, and its related technologies have also emerged in response to the situation, and are widely loved by people in the industry. In recent years, the state has given great support to flexo printing, which is an example of environmental protection, coupled with the continuous advancement of flexo printing technology, resulting in flexo printing being squeezed into the mainstream of the printing industry. Since the development of flexo printing, according to the development method, it can be divided into solvent development, water development and thermal development. Among them, water development has become t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/09G03F7/11B41N1/12
CPCB41C1/00B41N1/12
Inventor 许文然章学良赵军权李喜乐邢晓坤王国才陈倩
Owner LUCKY HUAGUANG GRAPHICS