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High weather resistance type release film and preparation method thereof

A release film, high weather resistance technology, applied in the direction of film/sheet release liners, adhesives, etc., can solve the problems of viscosity change and release film release force change, etc., to achieve easy peeling and improve peeling stability. , the effect of improving stability

Inactive Publication Date: 2018-07-17
SHAOXING XUYUAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The release film is coated on the surface of the substrate (polyethylene terephthalate film, polyvinyl chloride film, single-biaxially stretched polyethylene film, single-biaxially stretched polypropylene film, glassine, kraft paper, etc. ) is coated with a release agent to make the material have a film or paper with separation characteristics. The main structure of a conventional release film includes a coated substrate and a release agent, and the release agent is the key to the main anti-sticking effect; the existing After the tape is pasted with a release film, the problem of a large change in the release force of the release film itself often occurs, which is usually solved by proper curing. The matured release film will be more stable than the uncured product. , but there are also certain uncertain factors that lead to changes in the adhesiveness of the adhesive tape to the release film. In order to solve the above problems, a high weather resistance release film and its preparation method are proposed

Method used

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  • High weather resistance type release film and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] A preparation formula for high weather resistance release film, release agent 2 includes the following raw materials in mass fraction ratio: silicone oil main agent (100 parts), silicon hydrogen crosslinking agent (0.5 part), silane coupling agent (1 part) , platinum catalyst (3 parts), ethyl acetate (200 parts), butanone (200 parts), solvent gasoline (500 parts), isopropanol (50 parts);

Embodiment 2

[0024] A formula for preparing a high weather-resistant release film, the release agent 2 includes the following raw materials in mass fraction proportions: silicone oil main agent (100 parts), silicon hydrogen crosslinking agent (1 part), silane coupling agent (0.5 part) , platinum catalyst (5 parts), ethyl acetate (200 parts), butanone (200 parts), solvent gasoline (500 parts), isopropanol (50 parts).

Embodiment 3

[0026] Release agent 2 comprises silicone oil main agent (100 parts), silicon hydrogen crosslinking agent (0 part), silane coupling agent (0.5 part), platinum catalyst (5 parts), ethyl acetate (200 parts), butanone ( 200 parts), solvent gasoline (500 parts), isopropanol (50 parts).

[0027] A method for preparing a high-weather-resistant release film, comprising the steps of:

[0028] Step 1: Weigh all the ethyl acetate, methyl ethyl ketone, isopropanol and part of solvent gasoline according to the proportion, pour them into the container, dissolve and stir evenly, and let it stand properly after mixing evenly;

[0029] Step 2: Weigh all the silicone oil main agent and pour it into the solvent after mixing in S1 to dissolve and stir evenly;

[0030] Step 3: Weigh all the silicon hydrogen crosslinking agent and pour it into the mixed solvent in S2 to dissolve and stir evenly;

[0031] Step 4: Weigh all the silane coupling agent and pour it into the mixed solvent in S3 to diss...

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Abstract

The invention discloses a high weather resistance type release film and a preparation method thereof. The release film comprises a base material, the upper end face of the base material is marked as aB1 surface, the lower end face of the base material is marked as a B2 surface, and the B1 surface of the base material is coated with a release agent. According to the provided high weather resistance type release film and the preparation method thereof, the stability of the release agent itself is improved, a very stable release force can be maintained, and excessive influences from high temperature and high humidity and other environmental factors on the release film are not caused. On the basis of the situation that the excessive influences on the release film are not caused, the peeling stability of bonded adhesive products is improved, the bonded adhesive products are easy to peel, and a sticking phenomenon is not caused. The release agent is flat and smooth to smear and has no obvious unevenness, good heat shrinkage rate and thermal stability and higher stability than general release films in an ordinary environment, and obvious changes do not occur.

Description

technical field [0001] The invention relates to the field of release films, in particular to a high weather resistance release film and a preparation method thereof. Background technique [0002] The release film is coated on the surface of the substrate (polyethylene terephthalate film, polyvinyl chloride film, single-biaxially stretched polyethylene film, single-biaxially stretched polypropylene film, glassine, kraft paper, etc. ) is coated with a release agent to make the material have a film or paper with separation characteristics. The main structure of a conventional release film includes a coated substrate and a release agent, and the release agent is the key to the main anti-sticking effect; the existing After the tape is pasted with a release film, the problem of a large change in the release force of the release film itself often occurs, which is usually solved by proper curing. The matured release film will be more stable than the uncured product. , but there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/40
CPCC09J2467/006C09J2483/005
Inventor 刘永春程军
Owner SHAOXING XUYUAN NEW MATERIAL TECH
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