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A kind of high temperature resistant and low precipitation protective film and preparation method thereof

A technology of protective film and high temperature resistance, which is applied in the direction of pressure-sensitive film/sheet, film/sheet-shaped adhesive, adhesive type, etc. No shadow, residual glue and other problems, to achieve a good heat dissipation effect, meet the effect of not being polluted, and good barrier effect

Active Publication Date: 2022-07-15
安徽屹珹新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Acrylic pressure-sensitive adhesives are copolymers of acrylate monomers and other vinyl monomers. They are currently the most widely used pressure-sensitive adhesives. There are bad phenomena such as glue shadow and residual glue on the surface of the sticker. Therefore, the demand for high temperature resistant acrylic pressure sensitive adhesive is becoming more and more obvious
[0006] In the existing technical solution, the conventional acrylic pressure-sensitive adhesive is directly coated on the polyester film to obtain a protective film. After the protective film is subjected to high temperature during the manufacturing process, small molecules will be precipitated to varying degrees on the rubber surface and the film surface. If there is a layer of white mist, these small molecules will remain on the surface of the object to be pasted or dispersed in the process space, which will have a great impact on product processing

Method used

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  • A kind of high temperature resistant and low precipitation protective film and preparation method thereof
  • A kind of high temperature resistant and low precipitation protective film and preparation method thereof
  • A kind of high temperature resistant and low precipitation protective film and preparation method thereof

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preparation example Construction

[0061] The invention provides a method for preparing a protective film with high temperature resistance and low precipitation, comprising:

[0062] Vacuum-depositing an aluminum layer on the polyester film substrate layer to obtain an aluminum-coated polyester film layer;

[0063] Coating pressure-sensitive adhesive on one side of the aluminized polyester film layer to obtain a pressure-sensitive adhesive layer;

[0064] A release film layer is obtained by laminating a release film on the pressure-sensitive adhesive layer;

[0065] A positioning film is attached to the other side of the aluminized polyester film layer.

[0066] The preparation method of the high temperature resistant and low precipitation protective film provided by the present invention firstly vacuum-deposits an aluminum layer on the polyester film substrate layer to obtain an aluminum coated polyester film layer.

[0067] The protective film of the present invention is applied in the field of high-tempera...

Embodiment 1

[0076] Using Nanya NYJ210-ST 6μm polyester film, 20nm aluminized layer was evaporated on both sides, one side was coated with epoxy modified acrylic pressure sensitive adhesive with a dry adhesive thickness of 6μm, and a 75μm silicone release film was attached to the adhesive surface. A 100 μm positioning film is attached to the other side. The protective film is attached to the glass cover to be treated, the positioning film is removed, and the test is carried out in a vacuum environment. The test process is: 200 ℃ 1h - cooled to normal temperature - 200 ℃ 1h - cooled to normal temperature - 200 ℃30min.

Embodiment 2

[0078] Use Nanya NYJ210-ST 10μm polyester film, evaporate a 70nm aluminized layer on one side, apply a silicone-modified acrylic pressure-sensitive adhesive with a dry thickness of 4μm on the aluminized surface, and attach a 100μm non-silicon release film on the adhesive surface. , the non-aluminized surface is attached with a 75μm positioning film. The protective film is attached to the glass cover to be treated, the positioning film is removed, and the test is carried out in a vacuum environment. The test process is: 150℃ for 1h——cooling to normal temperature——150℃1h——cooling to normal temperature——150 ℃30min.

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Abstract

The invention provides a protective film with high temperature resistance and low precipitation, comprising: aluminized polyester film layer; a pressure-sensitive adhesive layer compounded on one side of the aluminized polyester film layer; A release film layer; a positioning film layer compounded on the other side of the aluminized polyester film layer. The invention adopts aluminized polyester film as a base material, coats acrylic pressure-sensitive adhesive on one side of the aluminized polyester film, then attaches a release film, and then attaches a positioning film to the other side. The high temperature resistant and low precipitation protective film is used to effectively protect the object to be attached in the high temperature vacuum coating process. The pressure-sensitive adhesive layer has excellent high temperature resistance, and the aluminized polyester film layer can better meet the requirements of no adhesive residue after high temperature resistance. The aluminized layer will also play a good barrier to the precipitation of small molecules, so as to meet the requirements of the vacuum chamber not to be polluted and the surface of the attached object to be free of white fog. After the process is completed, the protective film needs to be peeled off from the surface of the object to be attached, and the peeling force is controlled reasonably so that it will not be difficult to peel off.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a high temperature resistant and low precipitation protective film and a preparation method thereof. Background technique [0002] PET protective film is a surface protection material obtained by coating the surface of polyester film with a pressure-sensitive adhesive layer of a certain thickness and then laminating the release material. It is widely used in process protection in the electronics industry. [0003] Polyester chips and master batch chips are the main raw materials used in the production of polyester films, and master batch chips refer to polyester chips containing additives. Small molecule additives such as plasticizers will be added to the polyester film during the manufacturing process. After the film is formed, the small molecule additives still exist in the film, and there is a tendency to migrate to the surface. In the vacuum coating process, when th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C09J7/38C09J133/04C09J109/00C23C14/20C23C14/24
CPCC09J7/29C09J7/385C09J133/068C09J143/04C09J133/04C23C14/20C23C14/24C09J2467/006C09J2433/00C08L9/00
Inventor 滕超张道武王国伟杜玉莹
Owner 安徽屹珹新材料科技有限公司