High temperature-resistant nanosized self-adhesive optical protective film and production method thereof

A production method and self-adhesive technology, applied in chemical instruments and methods, layered products, other household appliances, etc., can solve the problems of optical film deformation, inelastic shrinkage, etc., and achieve non-decreasing viscosity, low surface energy, and transparent high rate effect

Pending Publication Date: 2019-04-12
永新股份(黄山)包装有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the protective films traditionally used are to protect the optical film from damage during transportation and transmission. They cannot prevent the printing layer from being scratched and polluted in a high-temperature environment, and are prone to high-temperature inelastic shrinkage, resulting in deformation of the optical film.

Method used

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  • High temperature-resistant nanosized self-adhesive optical protective film and production method thereof
  • High temperature-resistant nanosized self-adhesive optical protective film and production method thereof
  • High temperature-resistant nanosized self-adhesive optical protective film and production method thereof

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preparation example Construction

[0030] The preparation method of the high temperature-resistant nano-scale self-adhesive optical protective film comprises the following steps:

[0031] Step 1, put the materials contained in the self-adhesive layer, middle layer and unwinding layer into the corresponding suction area of ​​the multi-layer co-extrusion casting machine according to the above-mentioned component ratio requirements, and transport them to the extruder hopper under vacuum negative pressure , is plasticized into a melt by the extruder; the cylinder where the self-adhesive layer is located includes 6 heating sections and the temperature of each heating section is 210°C, 225°C, 230°C, 230°C, 230°C, 230°C, so The cylinder where the intermediate layer is located includes 8 heating sections and the temperatures of each heating section are 90°C, 200°C, 220°C, 225°C, 225°C, 225°C, 225°C, 225°C, the unwinding layer It includes 6 heating sections and the temperature of each heating section is 215°C, 225°C, 23...

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Abstract

The invention relates to a high temperature-resistant nanosized self-adhesive optical protective film and a production method thereof. The self-adhesive optical protective film comprises a self-adhesive layer, an intermediate layer and an unwinding layer, wherein the self-adhesive layer comprises metallocene polyethylene elastomer resin, soft rubber resin and ternary polymerized polypropylene resin at a mass ratio of (70-80):(10-20):(5-15), the intermediate layer includes high-density polyethylene resin, linear low-density polyethylene resin and low-density polyethylene resin at a mass ratio of (25-35):(35-45):(25-40), and the unwinding layer includes block polypropylene resin and a fluorine-containing auxiliary agent at a mass ratio of (90-98):(2-10). The self-adhesive optical protectivefilm is produced in a multi-layer coextrusion tape-casting mode, and has the excellent properties of high temperature resistance, no shrinkage, repeated sticking and no precipitation.

Description

technical field [0001] The invention belongs to the field of optical functional materials, and in particular relates to a high-temperature-resistant nano-scale self-adhesive optical protective film and a production method thereof. Background technique [0002] With the development of liquid crystal display technology, the backlight module used in the liquid crystal display device is prone to adverse consequences such as scratches, pollution, damage and deformation of the optical film during handling or storage. All covered with a protective film to prevent the above phenomenon. The optical film of the backlight module must be printed many times and dried at high temperature repeatedly during use, and the protective film covering it must also be peeled off, pasted repeatedly, and dried at high temperature many times. [0003] However, traditionally used protective films are mostly used to protect the optical film from damage during transportation and transmission. They canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08C08L23/06C08L23/14C08L23/16C08L23/08B29C48/08B29C48/21B29L7/00B29L9/00
Inventor 叶青松程赛标吴文武
Owner 永新股份(黄山)包装有限公司
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