Polyester base film for window film and manufacturing technology of polyester base film

A polyester base film and production process technology, applied in the direction of lamination auxiliary operation, lamination, layered products, etc., can solve the problems of reducing the optical and surface properties of the film, reducing the life of the window film, cracking, etc., and achieving oxygen permeability The effect of reducing the pass rate and UV transmittance, improving the tear resistance and prolonging the service life

Active Publication Date: 2015-12-30
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Most of the window films use ordinary optical-grade PET as the substrate. After 5 to 8 years of use, aging, discoloration and even cracking will occur. The main reason is that the substrate has been exposed to sunlight for a long time and moisture in the air, Oxygen erosion changes its structure, thereby reducing the life of the window film;
[0005] (2) The window film using PET as the base material has poor tear resistance, cannot play a good cushioning effect when impacted, and does not have the function of safety protection;
[0006] (3) In the prior art, the anti-ultraviolet window film realizes the anti-ultraviolet function by coating the anti-ultraviolet coating on the surface of the film, and the barrier type window film generally realizes the barrier function by compounding a layer of b

Method used

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  • Polyester base film for window film and manufacturing technology of polyester base film
  • Polyester base film for window film and manufacturing technology of polyester base film

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Experimental program
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Effect test

Embodiment 1

[0030] Group ratio:

[0031] The raw material of high barrier layer 2 is made of 0.25% SiO by weight percentage 2 Microparticles and 99.75% optical grade polyethylene naphthalate (PEN);

[0032] The raw material of anti-tearing layer 3 is made of 10% polyethylene terephthalate-1,4-cyclohexane dimethanol (PETG) and 90% optical grade polyethylene terephthalate by weight percentage. Alcohol ester (PET) composition;

[0033] The raw materials of the anti-ultraviolet layer 4 are composed of 1.5% 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 1.5% PETG, and 97% optical grade PET polyester chips by weight percentage ;

[0034] According to the following production process for production:

[0035] a) Put the raw materials of the tear-resistant layer 3 into a fluidized bed at 140°C and dry them for 4 hours. After the obtained dry raw materials are formulated according to the weight percentage, they are sent to the main extruder to be heated to a molten state as the core layer Melt: ...

Embodiment 2

[0040] Group ratio:

[0041] The raw material of high barrier layer 2 is made of 0.25% SiO by weight percentage 2 Microparticles and 99.75% optical grade polyethylene naphthalate (PEN);

[0042] The raw material of anti-tearing layer 3 is made of 15% polyethylene terephthalate-1,4-cyclohexane dimethanol (PETG) and 85% optical grade polyethylene terephthalate by weight percentage. Alcohol ester (PET) composition;

[0043] The raw material of the anti-ultraviolet layer 4 consists of 1% 2-(2'-hydroxyl-5'-methylphenyl)benzotriazole, 1% 4-benzoyloxy-2,2, 6,6-Tetramethylpiperidine, 3% PETG, 95% optical grade PET polyester chips;

[0044] According to the following production process for production:

[0045] a) Put the raw materials of tear-resistant layer 3 into a fluidized bed at 160°C for 5 hours and dry them for 5 hours. After the obtained dry raw materials are formulated according to the weight percentage, they are sent to the main extruder to be heated to a molten state as th...

Embodiment 3

[0050] Group ratio:

[0051] The raw material of high barrier layer 2 is made of 0.25% SiO by weight percentage 2 Microparticles and 99.75% optical grade polyethylene naphthalate (PEN);

[0052] The raw material of anti-tearing layer 3 is made of 13% polyethylene terephthalate-1,4-cyclohexane dimethanol (PETG) and 87% optical grade polyethylene terephthalate by weight percentage. Alcohol ester (PET) composition;

[0053] The raw material of the anti-ultraviolet layer 4 consists of 1% 2-(2'-hydroxyl-5'-methylphenyl)benzotriazole, 1% 4-benzoyloxy-2,2, 6,6-tetramethylpiperidine, 1% 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorobenzotriazole, 1% PETG, 96% Composition of optical grade PET polyester chips;

[0054] According to the following production process for production:

[0055] a) Put the raw materials of the anti-tear layer 3 into a fluidized bed at 150°C for 4.5 hours and dry them for 4.5 hours. After the obtained dry raw materials are formulated according to the weight ...

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Abstract

The invention belongs to the technical field of macromolecule protective films, and particularly relates to a polyester base film for a window film and a manufacturing technology of the polyester base film. The polyester base film is a thin film of a three-layer structure, the sandwich layer is a tearing resistance layer, and a high-barrier layer and an uvioresistant layer are arranged on the two sides of the sandwich layer. The tearing resistance layer is prepared from, by weight, 10%-15% of polyethylene glycol terephthalate-1,4-cyclohexane 2 methyl alcohol ester (PETG) and 85%-90% of optical grade PET polyester chips. The high-barrier layer is prepared from, by weight, 0.2%-0.35% of SO<2> particles and 99.65%-99.8% of poly naphthalene two formic acid glycol ester (PEN). The uvioresistant layer is prepared from, by weight, 3%-5% of ultraviolet ray absorption master batch and 95%-97% of optical grade PET polyester chips. The polyester base film can isolate ultraviolet rays, oxygen and vapor and prolong the service life of the window film, and has the advantages of being good in tearing resistance performance and optical performance. The invention provides a window film manufacturing technology which is easy to operate and low in cost.

Description

technical field [0001] The invention belongs to the technical field of polymer protective films, and is used in occasions where it is necessary to isolate ultraviolet rays, oxygen or water vapor, improve the impact strength of glass, etc., and specifically relates to a polyester base film for window films and a manufacturing process thereof. Background technique [0002] With the country's increasingly positive attitude towards "energy saving and emission reduction" environmental protection, window film has become one of the beneficiary industries under the policy of energy saving and environmental protection, and its future development prospects in my country are also very broad. Window film is mainly used for automobile glass and building door and window glass. It is pasted on the glass surface to improve the performance and strength of the glass, and to make it have thermal insulation, heat insulation, energy saving, explosion-proof, beautify the appearance, hide privacy...

Claims

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Application Information

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IPC IPC(8): B32B17/10B32B27/36B32B27/06B32B7/12B32B27/08B32B27/18B32B27/28B32B37/06B32B37/10B32B37/08B32B38/00C08L67/02C08K3/36
CPCB32B7/12B32B17/10B32B27/06B32B27/08B32B27/18B32B27/28B32B27/36B32B37/06B32B37/08B32B37/10B32B38/00B32B2307/5825B32B2307/71B32B2307/7242B32B2307/7265B32B2309/02C08K3/36C08L67/02C08L2203/16C08L2205/025
Inventor 徐飞飞孙善卫王红兵朱峰
Owner ANHUI GUOFENG PLASTIC
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