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High-barrier polyester film and its preparation method

A polyester film, high barrier technology, applied in the field of polyester film, can solve the problems of environmental impact, complex manufacturing process, high manufacturing cost, etc., and achieve high barrier effect

Active Publication Date: 2011-10-26
JIANGSU YUXING FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the publication number is CN101065849A, the disclosed "easy-adhesive polyester film and solar cell back protection film using it" is made of polyester film and a resin film coated on one side of the polyester film. Due to its two-layer structure, this kind of solar cell protective film has complicated manufacturing process, and needs to use special thermal processing equipment, so the manufacturing cost is high
At the same time, since the resin film needs to use cross-linking agents and solvents in the production, it will have a certain impact on the environment

Method used

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  • High-barrier polyester film and its preparation method

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Embodiment Construction

[0022] Such as figure 1 As mentioned above, the high barrier polyester film of the present invention has a three-layer composite structure, and the weight ratio of the core layer to the two-layer skin layer polyester masterbatch is 3-9:1. The skin layer polyester masterbatch contains the following components in weight percentage: 92-98% of PEN polyester chips, 0.2-2% of nucleating agent, and 1-6% of nucleating modifier. Wherein the nucleating agent is sodium benzoate, talcum powder, nano-scale silicon dioxide, montmorillonite, nano-titanium dioxide, 1; 3-2; 4-dilidene (p-methyl) benzyl sorbitol, or Multiple nucleating modifiers are one or more of polyethylene glycol PEG-600, PEG-1000, PEG-2000, PEG-5000, and triphenyl phosphite (TPP). The core layer polyester masterbatch contains the following components by weight percentage: 60-100% of PET polyester chips, 0-40% of PEN polyester chips.

[0023] The preparation method of the three-layer composite high barrier polyester film ...

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Abstract

The invention discloses a high-barrier polyester film, which has a three-layer composite construction, comprising a core layer, an upper cortex and a lower cortex. The core layer comprises the following components of: 60-100 wt% of PET polyester slices, 0-40 wt% of PEN polyester slices; the cortexes comprise the following components of: 92-98 wt% of PEN polyester slices, 0.2-2 wt% of a nucleating agent and 1-6 wt% of a nucleating modifier. The invention also discloses a coextruding-drawing preparation method of the above high-barrier polyester film. The invention has a simple preparation technology; in addition to excellent physical properties, the produced polyester film has better gas barrier property, heat resistance and radiation resistance performance, and can be applied in the fields of solar energy cell back-piece and the like.

Description

technical field [0001] The invention relates to a high-barrier polyester film and a preparation method thereof, belonging to the field of polyester films. Background technique [0002] Polyester film is usually a colorless, transparent, glossy, tough and elastic film. Compared with other plastic films, it has high relative density, high tensile strength, moderate elongation, high impact strength, good heat resistance, Good transparency, non-toxic and harmless, etc., widely used in packaging materials. With the rapid development of science and technology, polyester film has also been applied in capacitors, photosensitive materials, audio-visual and solar cells due to its excellent performance. As the publication number is CN101065849A, the disclosed "easy-adhesive polyester film and solar cell back protection film using it" is made of polyester film and a resin film coated on one side of the polyester film. Due to its two-layer structure, the solar cell protective film has ...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/18C08L67/02B29C69/00B29C47/92B29C55/28B29C48/92
CPCB29C48/40
Inventor 江黎明刘勤学顾洪林胡芳瑜刘文虎郦聪
Owner JIANGSU YUXING FILM TECH
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