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

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...

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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.

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