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Release agent, release film, composite film and ink-jet printing medium, preparation methods of release agent, release film, composite film and ink-jet printing medium, and application of ink-jet printing medium

A technology of release agent and release film, which is applied in the fields of inkjet printing media and its preparation, composite film, release film, and release agent, and can solve the problems of poor light transmission and inkjet printer recognition

Active Publication Date: 2018-02-16
SHANGHAI ALLECARD IMAGE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the problem that the existing composite film composed of polymer base film and release film cannot be sprayed due to its good light transmittance after being coated with a transparent ink-absorbing coating to make an ink-jet printing medium. Defects identified by ink printers, providing a release agent, release film, composite film, inkjet printing medium, preparation method and application thereof

Method used

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  • Release agent, release film, composite film and ink-jet printing medium, preparation methods of release agent, release film, composite film and ink-jet printing medium, and application of ink-jet printing medium
  • Release agent, release film, composite film and ink-jet printing medium, preparation methods of release agent, release film, composite film and ink-jet printing medium, and application of ink-jet printing medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1, a kind of release agent, it is made up of following components: polyvinyl alcohol 5g, silicon dioxide 1g, rutile type titanium dioxide 4g, aqueous polyurethane 5g, emulsion wax 5g, wetting agent 0.5g and water 70g, wherein, two The particle size of silicon oxide is 3 μm, the particle size of titanium dioxide is 0.34 μm; the solid content of the release agent is 17.2%, and the viscosity is 372 mPa·s.

[0063] This release agent is prepared by the following method:

[0064] (1) dissolving polyvinyl alcohol in deionized water heated to 80° C., after fully dissolving, to obtain an aqueous solution of polyvinyl alcohol with a mass fraction of 10%;

[0065] Disperse silicon dioxide in deionized water and disperse it for 0.5h at a speed of 1000r / min in a disperser to obtain a silicon dioxide dispersion with a mass fraction of 10%;

[0066] Disperse titanium dioxide in deionized water, and disperse it for 20 minutes at a speed of 1000 r / min in a disperser to obtain a titani...

Embodiment 2

[0073] 1, a kind of release agent, it is made up of following components: polyvinyl alcohol 6g, silicon dioxide 1.8g, rutile type titanium dioxide 7.2g, aqueous polyurethane 7g, emulsion wax 8g, wetting agent 1g and water 75g, wherein, The particle size of silicon dioxide is 5 μm, and that of titanium dioxide is 0.15 μm; the solid content of the release agent is 20.9%, and the viscosity is 453 mPa·s.

[0074] This release agent is prepared by the following method:

[0075](1) dissolving polyvinyl alcohol in deionized water heated to 80° C., after fully dissolving, to obtain an aqueous solution of polyvinyl alcohol with a mass fraction of 10%;

[0076] Disperse silicon dioxide in deionized water, and disperse it for 25 minutes at a speed of 1200r / min in a disperser to obtain a silicon dioxide dispersion with a mass fraction of 15%;

[0077] Disperse titanium dioxide in deionized water and disperse it for 0.5h at a speed of 1200r / min in a disperser to obtain a titanium dioxide ...

Embodiment 3

[0084] 1, a type release agent, it is made up of following components: polyvinyl alcohol 7g, silicon dioxide 1.5g, anatase type titanium dioxide 6g, aqueous polyurethane 10g, emulsion wax 10g, wetting agent 1.5g and water 90.5g, Wherein, the particle size of silicon dioxide is 15 μm, and that of titanium dioxide is 0.5 μm; the solid content of the release agent is 23.7%, and the viscosity is 581 mPa·s.

[0085] This release agent is prepared by the following method:

[0086] (1) dissolving polyvinyl alcohol in deionized water heated to 80° C., after fully dissolving, to obtain an aqueous solution of polyvinyl alcohol with a mass fraction of 10%;

[0087] Disperse silicon dioxide in deionized water and disperse for 20 minutes at a speed of 1500 r / min in a disperser to obtain a silicon dioxide dispersion with a mass fraction of 10%;

[0088] Disperse titanium dioxide in deionized water, and disperse it for 0.5h at a speed of 1500r / min in a disperser to obtain a titanium dioxide...

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Abstract

The invention discloses a release agent, a release film, a composite film and an ink-jet printing medium, preparation methods of the release agent, the release film, the composite film and the ink-jetprinting medium, and an application of the ink-jet printing medium. The release agent comprises the following components in parts by weight: 5-7 parts of polyvinyl alcohol, 1-2 parts of silicon dioxide, 4-8 parts of titanium dioxide, 5-10 parts of waterborne polyurethane, 5-10 parts of emulsion wax, 0.5-1.5 parts of a wetting agent, and water, wherein the solid content of the release agent is 15-30%. The preparation method of the release agent comprises the following steps: preparing 8-12% of polyvinyl alcohol water solution, 10-15% of a silicon dioxide dispersion liquid and 20-40% of a titanium dioxide dispersion liquid, and then performing uniform mixing with other components to obtain the release agent. The release film is obtained by coating the release agent on a base material, and performing drying, cooling and stripping, wherein the usage amount of the release agent is 100-130 g / m<2>. The composite film comprises a polymer base film and a release film. The ink-jet printing medium comprises a composite film and a transparent ink-absorbing coating. The release film and the polymer base film have moderate adhesive force, the release effect is good, and the ink-jet printing medium can be identified during printing.

Description

technical field [0001] The invention relates to the field of polymer coatings, in particular to a release agent, a release film, a composite film, an inkjet printing medium and a preparation method and application thereof. Background technique [0002] Because of its excellent release effect, the release film is widely used in packaging, printing, screen printing, pad printing, membrane switch, flexible circuit, insulation products, circuit board, laser anti-counterfeiting, lamination, electronics, sealing material film, reflective material, Waterproof materials, toilet paper, adhesive products, die-cutting and punching processing and other fields. At present, the base film material of the release film mainly adopts polymer base films such as PET, PP, and PE, among which the base film of PET is the most widely used. [0003] Extensive research has been done on PET release films in the prior art. Chinese patent document CN104592848A discloses a kind of BOPET (biaxially stre...

Claims

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Application Information

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IPC IPC(8): C09D129/04C09D175/04C09D191/06C09D7/61C08J7/04C08L67/02C08L23/06C08L23/12B41M5/50B41M5/52
CPCB41M5/426B41M5/44C08J7/0427C08J2323/06C08J2323/12C08J2367/02C08J2429/04C08J2475/04C08J2491/06C08L2205/03C09D129/04C09D175/04C09D191/06C08L75/04C08L91/06C08K3/36C08K2003/2241C08L29/04
Inventor 段广宇季玉秋王文良朱纯
Owner SHANGHAI ALLECARD IMAGE MATERIAL
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