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High-temperature-resistant easy-to-peel CPP protective film and preparation method thereof

A protective film, easy-to-peel technology, applied in the direction of film/sheet-like adhesives, adhesives, etc., can solve the problems of difficult peeling, white fog, wrinkling, etc.

Active Publication Date: 2020-07-24
XIANGSHAN JIZHI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing protective film is not easy to peel off in a high-temperature process environment, the invention provides a high-temperature-resistant and easy-peelable CPP protective film and a preparation method thereof
[0005] Furthermore, in order to solve the problems of bulging and wrinkling of the existing protective film in the high-temperature process environment, and white fog, residual glue, and difficulty in peeling after tearing, the present invention provides a high-temperature-resistant easy Peel off the CPP protective film
The protective film not only has high temperature resistance, will not bulge or wrinkle in the high temperature process environment, but also will not appear white fog, residual glue, difficult to peel and other problems after being torn at high temperature. It is suitable for various high temperature protection process

Method used

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  • High-temperature-resistant easy-to-peel CPP protective film and preparation method thereof
  • High-temperature-resistant easy-to-peel CPP protective film and preparation method thereof
  • High-temperature-resistant easy-to-peel CPP protective film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The high temperature resistant and easy-peeling CPP protective film provided by the invention comprises a surface layer, a core layer and an adhesive layer in sequence.

[0047] The surface layer comprises 90% of homopolypropylene, 9% of polyolefin resin and 1% of inorganic heat-resistant filler. The density of homopolypropylene is 0.90g / cm 3 , The melt index is 8.0g / 10min. The polyolefin resin is 4-methylpentene polymer with a density of 0.83g / cm 3 , The melt index is 21.0g / 10min.

[0048] The core layer adopts homopolypropylene with a weight percentage of 100%, and its density is 0.90g / cm 3 , The melt index is 8.0g / 10min.

[0049] The adhesive layer adopts a metallocene polyolefin elastomer, which is an ethylene-octene copolymer with a density of 0.86g / cm 3 , The melt index is 6.0g / 10min.

[0050]The surface layer had a thickness of 6 μm, the core layer had a thickness of 24 μm, and the adhesive layer had a thickness of 5 μm.

Embodiment 2

[0052] The high-temperature-resistant and easy-to-peel CPP protective film provided in Example 1 differs in that:

[0053] The surface layer includes 90% homopolypropylene, 8% polyolefin resin, and 2% heat-resistant inorganic filler.

Embodiment 3

[0055] The high-temperature-resistant and easy-to-peel CPP protective film provided in Example 1 differs in that:

[0056] The surface layer includes 87% of homopolypropylene, 10% of polyolefin resin and 3% of heat-resistant inorganic filler. The density of homopolypropylene is 0.91g / cm 3 , The melt index is 3.0g / 10min. The polyolefin resin is 4-methylpentene polymer with a density of 0.85g / cm 3 , The melt index is 27.0g / 10min.

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Abstract

The invention relates to the field of protective film materials, in particular to a high-temperature-resistant easy-to-peel CPP protective film and a preparation method thereof. The invention providesa high-temperature-resistant easy-to-peel CPP (Chlorinated Polypropylene) protective film and a preparation method thereof in order to solve the problem that the existing protective film does not bulge, wrinkle or the like in a high-temperature process environment and does not have white fog, residual glue, difficulty in peeling and the like after being torn. The protective film sequentially comprises a surface layer, a core layer and an adhesive layer, wherein the surface layer is composed of homo-polypropylene, polyolefin resin and heat-resistant inorganic filler, the core layer is polypropylene resin, and the adhesive layer is metallocene polyolefin elastomer. The protective film not only has high temperature resistance, but also does not have the problems of white fog, residual glue,difficulty in stripping and the like after being baked and torn at high temperature, and is suitable for various high-temperature-resistant protective processes.

Description

technical field [0001] The invention relates to the field of protective film materials, in particular to a high temperature resistant and easy-to-peel CPP protective film and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of flexible screen OLED technology, the demand for ultra-thin displays such as liquid crystal displays has also increased, so that ITO thin films have also been widely used. However, the ITO film has a high-temperature treatment link in the processing process, which requires a layer of high-temperature-resistant protective film to protect the surface of the ITO film to avoid scratches and pollution. [0003] At present, the common high-temperature protective film on the market is glue-coated film, which is usually coated with glue on the polyester film. After the protective film is baked at high temperature, it will leave residual glue on the surface of the ITO film, which will affect the product perf...

Claims

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Application Information

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IPC IPC(8): C09J7/29C08L23/12C08L23/20C08J5/18
CPCC09J7/29C08J5/18C09J2423/106C09J2423/04C08J2323/12C08J2423/20
Inventor 唐海江陈强胡金福袁思锐夏寅郭俊超李刚张彦
Owner XIANGSHAN JIZHI NEW MATERIAL CO LTD
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