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Self-adhesive protective film for LCD optical polarizer and production method of self-adhesive protective film

A technology of self-adhesive protective film and production method, applied in the field of packaging, can solve the problems of poor peeling force, low temperature and humidity resistance, low light transmittance, etc., and achieves high fit, good weather resistance, and light transmittance. Good results

Active Publication Date: 2021-03-23
永新股份(黄山)包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current protective film not only has the problems of low temperature resistance and poor heat and humidity resistance, but also has problems such as poor peeling force and low light transmittance.

Method used

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  • Self-adhesive protective film for LCD optical polarizer and production method of self-adhesive protective film
  • Self-adhesive protective film for LCD optical polarizer and production method of self-adhesive protective film
  • Self-adhesive protective film for LCD optical polarizer and production method of self-adhesive protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] S1, weigh 130 parts by mass of polyethylene and 70 parts by mass of the polyolefin, the intermediate layer 250 parts of copolymerized polyethylene, and 50 parts by mass of polyethylene, and 370 parts by mass of the anti-adhesive layer copolymerized polypropylene. 28 parts by mass of low-density polypropylene and 2 parts by mass of the open agent, then put the particles used by the self-adhesive layer 1, the intermediate layer 2, and the release layer 3 into a multi-layered co-extension. Transmit to the extruder hopper via the vacuum suctioner, the weight system is proposed, and the feed screw is automatically filled with the feed screw, and then plasticized into a melt;

[0036] S2, the melt sequentially passes through the extrusion screw of the casting machine, the high-efficiency filter, the distributor of the castor, and the die of the casting machine, the casting roller, and the cooling roller of the casting machine to form a film;

[0037] S3, the film is traged by the...

Embodiment 2

[0039]S1, weighing 135 parts by mass of polyethylene and 65 parts by mass of polyolefin, 245 parts by mass of polypropylene, and 55 parts by mass of polyethylene, 365 parts by mass of block copolymer polypropylene , 30 parts by mass of low-density polypropylene and 5 parts by mass of the an open agent, then put the self-adhesive layer 1, the intermediate layer 2 and the obtained particles used in the release layer 3 into the multi-layer co-extrusion fluoride phase corresponding to the suction bucket Inside, via the vacuum suctioner is delivered to the extruder hopper, and the weight system is called, and the feed screw is automatically filled with the feed screw, and then plasticized into a melt;

[0040] S2, the melt sequentially passes through the extrusion screw of the casting machine, the high-efficiency filter, the distributor of the castor, and the die of the casting machine, the casting roller, and the cooling roller of the casting machine to form a film;

[0041] S3, the f...

Embodiment 3

[0043] S1, weigh 140 parts by mass of polyethylene and 60 parts by mass of polyolefin, intermediate layer 255 parts by mass of copolypropylene and 45 parts by parts of polyethylene, and a 380 parts by mass of the anti-adhesive layer 380 parts by mass. Copolymer polypropylene 18 parts by mass of low-density polypropylene and 2 parts by mass of an open agent, then the particles used from the self-adhesive layer 1, the intermediate layer 2, and the release layer 3 are inserted into a multi-layer co-extrusion fluid. Inside, via the vacuum suctioner is delivered to the extruder hopper, and the weight system is called, and the feed screw is automatically filled with the feed screw, and then plasticized into a melt;

[0044] S2, the melt sequentially passes through the extrusion screw of the casting machine, the high-efficiency filter, the distributor of the castor, and the die of the casting machine, the casting roller, and the cooling roller of the casting machine to form a film;

[00...

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Abstract

The invention relates to a self-adhesive protective film for an LCD optical polarizer and a production method of the protective film, and belongs to the technical field of packaging. The self-adhesiveprotective film comprises a self-adhesive layer, a middle layer and an anti-adhesive layer; the self-adhesive layer comprises the following components in parts by weight: 25-40 parts of soft rubber resin and 60-75 parts of low-density polyethylene resin; the middle layer comprises the following components in parts by weight: 40-55 parts of binary co-polypropylene resin and 45-60 parts of high-density polyethylene resin; and the anti-adhesive layer comprises the following components in parts by weight: 65-83 parts of block polypropylene resin, 15-30 parts of low-density polyethylene and 2-5 parts of an anti-blocking agent. The self-adhesive protective film disclosed by the invention has the advantages of high bonding peeling strength in which is not easy to tear off when being bonded witha polaroid, so that the polaroid can be well protected;high-temperature resistance in whichat high temperature, the thermal stability is high and the size and bonding force are stable; damp heat resistance in which various physical properties are very stable in a high-temperature and high-humidity environment; and high light transmittance; and thus, the requirements of the polaroid are met, and the polaroid can be well protected.

Description

Technical field [0001] The present invention relates to the field of packaging, particularly an LCD optical polarizer self-adhesive protective film and its production method thereof. Background technique [0002] The polarizer is an important component that causes polarization through the light passage of the nipper-chromatic medium, affecting an important part of the LCD display screen light. At present, the polarizer commonly used in the LCD is to use the polyvinyl alcohol as a substrate, and the silicone having two-way color is dyed, while extending under a certain temperature and humidity conditions, so that it absorbs two-way color. The sexual dye forms polarization properties, forms a polarizing film after dehydration and drying. [0003] Since polyvinyl alcohol has a very strong hydrophilicity, the physical properties of the polarizing film are protected from each composite layer of high light transmittance on both sides, and the water resistance has a certain mechanical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29C09J7/30C09J123/06C09J123/02C08L23/14C08L23/06C08L53/00C08L23/12C08J5/18
CPCC09J7/29C09J7/30C09J123/06C08J5/18C08J2323/14C08J2423/06C08J2353/00C08J2423/12C09J2423/04C09J2423/00C09J2423/106C09J2423/046C09J2453/006C08L23/02
Inventor 叶青松程赛标吴文武郎宇奇
Owner 永新股份(黄山)包装有限公司
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