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Strippability-stable matte release film

A technology of peeling and release film, which is applied in the direction of coating, etc., can solve the problems of uneven film surface, unstable peeling force of release film, and inconsistent depth, so as to achieve stable peeling and improve atomization effect , enhance the effect of adhesion

Inactive Publication Date: 2017-05-10
安徽长正升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The release film is to apply the release agent on the surface of the environmental protection material PET, PE, OPP film substrate, so that it can show a very light and stable release force for various organic pressure-sensitive adhesives. Organic pressure-sensitive adhesives, such as hot-melt adhesives, acrylic adhesives, and pressure-sensitive adhesives of rubber systems, require different film release forces. According to the different viscosities of the adhesives that need to be isolated, the release force should be adjusted accordingly, so that When peeling off, a very light and stable release force is achieved. In order to make the pressure-sensitive adhesive reach a certain degree of concave-convex shape, the rubber surface has a certain roughness and low reflection effect. The matte release film plays a major role. Generally, the preparation The method is to roughen the film base material with a sanding sheet, clean the dust on the coated base material, wash and remove dust, and then coat a layer of release film on the film surface. The disadvantage of this method is that the depth of grinding is inconsistent, and the surface of the film The unevenness of the concave and convex shape will cause the peeling force of the release film to be unstable, or because the release paper and the coating layer are attached by a high-viscosity adhesive film, it will lead to poor release, and may also appear Uneven haze, resulting in product waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of fog surface release film with stable peeling property, comprises film substrate and the functional release agent layer coated on film substrate, the surface roughness of described film substrate coating function release agent layer is 2.38- 2.65μm;

[0022] The functional release agent is composed of the following components by weight percentage: 12.5% ​​of methyl hydrogen silicone oil, 6% of mixed polyol, 18% of polymethylene polyphenyl polyisocyanate, 35% of cyanoacrylate resin, acrylic acid Hydroxyethyl ester 6%, talcum powder 20.5%, platinum complex catalyst 2%;

[0023] Among them, the mixed polyol is formed by mixing polyether polyol, polyester polyol and castor oil in a weight ratio of 2:1:4.

[0024] Wherein, the hydrogen content of the methyl hydrogen-containing silicone oil is 1.2-1.5%, and the viscosity is 200-260mm² / s; the platinum complex catalyst is an ethylenediamine-platinum complex; the particle size of the talcum powder is It is 0.05-0.18μm...

Embodiment 2

[0030] A kind of fog surface release film with stable peeling property, comprises film substrate and the functional release agent layer coated on film substrate, the surface roughness of described film substrate coating function release agent layer is 2.38- 2.65μm;

[0031] The functional release agent is composed of the following components by weight percentage: 15.5% of methyl hydrogen silicone oil, 4% of mixed polyol, 24% of polymethylene polyphenyl polyisocyanate, 32% of cyanoacrylate resin, acrylic acid Hydroxyethyl ester 10%, talc powder 12.5-22.5%, platinum complex catalyst 1%;

[0032] Among them, the mixed polyol is formed by mixing polyether polyol, polyester polyol and castor oil in a weight ratio of 2:1:4.

[0033] Wherein, the platinum complex catalyst is o-dimethylamine or dimethylaminomethyltriphenylphosphine platinum complex, and the remaining content is the same as in Example 1.

[0034] According to the observation of this embodiment, the atomization effect...

Embodiment 3

[0036] A kind of fog surface release film with stable peeling property, comprises film substrate and the functional release agent layer coated on film substrate, the surface roughness of described film substrate coating function release agent layer is 2.38- 2.65μm;

[0037] The functional release agent is composed of the following components by weight percentage: 14% methyl hydrogen silicone oil, 5% mixed polyol, 20% polymethylene polyphenyl polyisocyanate, 33.5% cyanoacrylate resin, acrylic acid Hydroxyethyl ester 8%, talc powder 15.5%, platinum complex catalyst 4%;

[0038] Wherein, the mixed polyol is formed by mixing polyether polyol, polyester polyol and castor oil in a weight ratio of 2:1:4.

[0039] Wherein, the platinum complex catalyst is diselenocrown platinum complex, and the remaining content is the same as in Example 1.

[0040] According to the observation of this embodiment, the atomization effect is good, there is no crack, the extinction test result has no e...

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Abstract

The invention belongs to the technical field of the matte release film, and particularly relates to a strippability-stable matte release film. The strippability-stable matte release film comprises a film base material and a functional release agent layer coated on the film base material. The surface roughness of the functional release agent layer coated on the film base material is 2.38-2.65 mu m. Compared with the prior art, the functional release agent of the matte release film has the stable performance. The function-stable high molecular film is formed after the functional release agent is coated on the film base material, and the silicon transfer is small; the functional release agent is permeated into the concave position of the film base material under the liquid state, so the adhesive force is enhanced; and talcum powder is selected for coordinating synergistic effects of other raw materials, the matting uniformity is guaranteed, the function-stable high molecular film has the better smoothness and strength after the functional release agent is coated on the film base material, the strippability is stable, and the matting effect is improved.

Description

technical field [0001] The invention belongs to the technical field of fog surface release films, in particular to a fog surface release film with stable peeling property. Background technique [0002] The release film is to apply the release agent on the surface of the environmental protection material PET, PE, OPP film substrate, so that it can show a very light and stable release force for various organic pressure-sensitive adhesives. Organic pressure-sensitive adhesives, such as hot-melt adhesives, acrylic adhesives, and pressure-sensitive adhesives of rubber systems, require different film release forces. According to the different viscosities of the adhesives that need to be isolated, the release force should be adjusted accordingly, so that When peeling off, a very light and stable release force is achieved. In order to make the pressure-sensitive adhesive reach a certain degree of concave-convex shape, the rubber surface has a certain roughness and low reflection eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D4/02C09D4/06C09D7/12
CPCC08J7/0427C09D4/06C09D7/61
Inventor 陈宇
Owner 安徽长正升科技有限公司