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Preparation method of high-adhesion modified PET/PBT compound release film

A high-adhesion, release film technology, used in coatings, conductive coatings, etc., can solve the problems of easy peeling, degumming, affecting the performance of the release film, etc., to improve adhesion, improve adhesion, and a good environment. The effect of stability

Inactive Publication Date: 2016-11-23
JIXIANGBAO TAICANG RELEASE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the bonding force between the PET release film base material and the release agent coated on the release film currently on the market is generally too small, and it is easy to peel off, resulting in a "degumming phenomenon" during cutting, which affects the release film. performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of high bonding modified PET / PBT composite release film comprises the following steps:

[0033] (1) Weigh 50 parts of PET, 25 parts of PBT, 10 parts of hydrogen-terminated silicone oil, 5 parts of nano-titanium nitride, 1 part of calcium stearate, and 5 parts of paraffin, mix and modify, and melt extrude to manufacture modified PET / PBT compound Basement membrane flakes, the thickness of the basement membrane flakes is 20 microns;

[0034] (2) Clean the moisture and dust on the surface of the modified PET / PBT composite base film with hot air at 60°C, and corona treat the surface of the base film to make the surface tension 32mN / m, and evenly coat the tetraethyl silicate coating on the base film one side;

[0035] (3) Coating the adhesion modifier layer with acrylic acid and drying at 55°C;

[0036] (4) Prepare by weighing 25 parts of conductive polymer resin, 5 parts of methyl hydrogen silicone oil, 40 parts of vinyl silicone oil, 1 part of...

Embodiment 2

[0039] A kind of preparation method of high bonding modified PET / PBT composite release film comprises the following steps:

[0040] (1) Weigh 70 parts of PET, 45 parts of PBT, 20 parts of hydrogen-terminated silicone oil, 7 parts of nano-titanium nitride, 2 parts of calcium stearate, and 15 parts of paraffin wax, mix and modify, and melt extrude to manufacture modified PET / PBT compound Basement membrane flakes, the thickness of the basement membrane flakes is 100 microns;

[0041] (2) Clean the moisture and dust on the surface of the modified PET / PBT composite base film with hot air at 70°C, and corona treat the surface of the base film to make the surface tension 40mN / m, and evenly coat the tetraethyl silicate coating on the base film one side;

[0042] (3) Coating the adhesion modifier layer with acrylic acid and drying at 65°C;

[0043] (4) Prepare by weighing 45 parts of conductive polymer resin, 15 parts of methyl hydrogen silicone oil, 60 parts of vinyl silicone oil, 2...

Embodiment 3

[0046] A kind of preparation method of high bonding modified PET / PBT composite release film comprises the following steps:

[0047] (1) Weigh 55 parts of PET, 30 parts of PBT, 12 parts of hydrogen-terminated silicone oil, 6 parts of nano-titanium nitride, 2 parts of calcium stearate, and 8 parts of paraffin wax for mixing and modification, and melt extrusion to manufacture modified PET / PBT compound Basement membrane flakes, the thickness of the basement membrane flakes is 40 microns;

[0048] (2) Clean the moisture and dust on the surface of the modified PET / PBT composite base film with hot air at 60°C, and corona treat the surface of the base film to make the surface tension 34mN / m, and evenly coat the tetraethyl silicate coating on the base film one side;

[0049] (3) Coating the adhesion modifier layer with acrylic acid and drying at 55°C;

[0050] (4) Prepare by weighing 30 parts of conductive polymer resin, 8 parts of methyl hydrogen-containing silicone oil, 45 parts of...

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Abstract

The invention relates to a preparation method of a high-adhesion modified PET / PBT composite release film, which includes the modification preparation of the composite base film, the coating of the antistatic layer and the coating of the adhesion modifier layer, and the release The preparation and coating of the agent, and then the coated base film is prepared by thermal curing and light curing. The base film of the present invention is made of PET / PBT film, compounded by modification, greatly improves the bonding force between the composite release film base film and the release agent, and avoids separation between the release agent and the base film; Corona treatment on the surface of the base film improves the adhesion between the antistatic layer of the tetraethyl silicate coating and the base film; the adhesion modifier reacts with free radicals on the surface of the modified composite release film to further improve the adhesion . Thermal and photocuring treatments further enhance the interfacial strength of the modifier coating and the release layer. The modified composite release film prepared by the preparation method of the invention improves the rigidity of the release film and effectively improves the bonding force between the base film and the release agent.

Description

technical field [0001] The invention relates to the technical field of release film preparation, in particular to a preparation method of a high-adhesion modified PET / PBT composite release film. Background technique [0002] The release film refers to a film with a separable surface. The release film is not sticky or slightly sticky after contacting with a specific material under limited conditions. [0003] Usually, in order to increase the release force of the release film, the surface of the release film is coated with a release agent on the surface of the release film substrate, so that it is suitable for various organic pressure-sensitive adhesives, such as hot melt adhesives. , acrylic adhesive and rubber-based pressure-sensitive adhesive, etc., can exhibit extremely light and stable release force. According to the required release force of the release film, the viscosity of the isolation product adhesive is different, and the release force is adjusted accordingly, so...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08J7/12C08L67/02C08L83/05C08L91/06C08K3/28C08K5/098C09D5/24C09D183/07C09D201/00C09D5/20C09D7/12
CPCC08J7/042C08J7/12C08J2367/02C08J2483/07C08K2201/011C08L67/02C08L2205/025C08L2205/03C08L2205/035C09D5/20C09D5/24C09D7/63C09D183/04C08L83/04C08L91/06C08K3/28C08K5/098C08L101/12
Inventor 於险峰
Owner JIXIANGBAO TAICANG RELEASE MATERIAL TECH CO LTD
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