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Repetitive printing material

A technology of repeated printing and dyeing, applied in printing, special paper, pigmented coating, etc., can solve the problems of low contrast and resolution, limited application scope, etc., and achieve the effect of long color retention time and high water absorption

Inactive Publication Date: 2016-11-16
BAODING LUCKY FILM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The handwriting on the water writing paper prepared by this method is mostly black, the contrast and resolution are not high, and the scope of application is limited to the practice of calligraphy and painting.

Method used

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  • Repetitive printing material
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preparation example Construction

[0065] In the present invention, the coating liquid includes 1-20 parts by weight of binder, preferably 2-18 parts by weight. In the present invention, the binder preferably includes one or more of gelatin, polyethylene glycol, polyvinyl alcohol, cellulose and starch. In an embodiment of the present invention, the gelatin may be French gelatin, German gelatin, American gelatin, or Kaiping gelatin. In the present invention, the gelatin is preferably added to the coating liquid in the form of a gelatin solution; the mass fraction of the gelatin solution is preferably 1%-20%. The preparation method of the gelatin solution is not particularly limited in the present invention, and the method for preparing the gelatin solution well known to those skilled in the art can be adopted. In the present invention, the preparation method of described gelatin solution preferably comprises the following steps:

[0066] Mix gelatin and water and heat to obtain a gelatin solution.

[0067] In...

Embodiment 1

[0088] 0.05g (E)-4-(2-(9,9-dimethyl-2,3,9,9a-tetrahydrooxazoline[3,2-a]indole-9a-)vinyl) -N,N-dimethylaniline dye was dissolved in 50mL of KH560 silane coupling agent to obtain a dye solution;

[0089] Mix 100g of gelatin and 900g of water to swell and heat at 50°C until the gelatin dissolves to obtain a gelatin solution;

[0090] Disperse the dye solution and gelatin solution at a high speed at 3000-10000rpm to obtain a color-developing emulsion;

[0091] The chromogenic emulsion and 2g grades are 1283 surfactants, 3g of 2-hydroxyl-4-n-octyloxybenzophenone with a mass fraction of 10%, and an acrylic ester polymer with a mass fraction of 10%. 8 g of s-triazine sodium salt hardening agent with a mass concentration of 10 g / L were mixed to obtain a coating liquid.

[0092] The above-mentioned coating solution is coated on a 60 μm PET substrate with a slope flow extruder to obtain a reprintable paper;

[0093] The reprintable paper includes a PET substrate of 80 μm and a coatin...

Embodiment 2

[0096] 0.01g (E)-4-(2-(9,9-dimethyl-7-nitro-2,3,9,9a-tetrahydrooxazoline[3,2-a]indole-9a -) Vinyl)-N,N-dimethylaniline dye was dissolved in 100mL of ethanol to obtain a dye solution;

[0097] Mix 15g of gelatin and 100g of water to swell and heat at 45°C until the gelatin dissolves to obtain a gelatin solution;

[0098] Disperse the dye solution and gelatin solution at a high speed at 3000-10000rpm to obtain a color-developing emulsion;

[0099] The chromogenic emulsion and 10g mass concentration are 1292 surfactants with a mass fraction of 80g / L, 10% 2,4-dihydroxybenzophenone 5g, and 10% mass fractions with T 10 g of the polyether-modified organosilane leveling agent of -2 and 20 g of the glutaraldehyde film hardening agent with a mass fraction of 10% were mixed to obtain a coating liquid.

[0100] The above coating liquid is coated on the PP base material with a slope flow extruder to obtain a reprintable material;

[0101] The reprintable material includes a PP substrate...

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Abstract

The invention provides a repetitive printing material. The repetitive printing material comprises a substrate layer and a coating layer combined with the substrate layer. The coating layer is manufactured through coating liquid in a coating mode. The coating liquid includes 0.001-1 part by weight of dye, 0-150 parts by weight of an organic solvent, 0.1-10 parts by weight of a functional additive, 5-200 parts by weight of water and 1-20 parts by weight of a binding agent. The color retaining time after the repetitive printing material is printed is long, the longitudinal water permeability is good, and the water absorption rate is high. Experimental results show that the color retaining time is 15-50 h if the thickness of the coating layer of the repetitive printing material provided by the invention is 5-10 microns; the color retaining time is 50-100 h if the thickness of the coating layer is larger than 10 microns; when the thickness of the coating layer is 5 microns, continuous printing is conducted by 5-10 times, and the surface is dry; and the water absorption rate is 30-50%.

Description

technical field [0001] The invention belongs to the technical field of printing materials, in particular to a reprintable material. Background technique [0002] Traditional writing paper is disposable, and the writing on it cannot be erased or reused. People writing drafts, copying exercises, etc. will inevitably waste a lot of paper. Disposable writing paper or printing paper is seriously wasted. From the perspective of environmental protection and resource reuse, paper recycling is particularly important. [0003] At present, there are also a large number of reusable water-colored water writing papers on the market, but the existing water writing papers are all composed of paper base, carbon black layer and sprayed white layer or directly composed of dark base paper and sprayed white layer . They are all based on the fact that the sprayed white layer becomes transparent when it meets water, and the color of the carbon black layer or the color of the dark base paper is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/52C08J7/04C09D189/00C09D129/04C09D7/00C09D7/12C08L67/02C08L23/12C08L27/06D21H27/20D21H19/36
CPCB41M5/52B41M5/5236B41M5/5263C08J7/0427C08J2323/12C08J2327/06C08J2367/02C08J2429/04C08J2489/00C09D7/41C09D7/63C09D129/04C09D189/00D21H19/36D21H27/20C08L33/04C08K5/00C08K5/353C08L83/12C08K5/3475
Inventor 卢志凯王洪泽高学军李建平黄海水王肖鹏盛兰席冠陈俏男张晓安
Owner BAODING LUCKY FILM