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High-barrier polyester film and preparation method thereof

A polyester film, high-barrier technology, applied in the coating and other directions, can solve the problems of complex production and processing, low light transmittance and high production cost of high-barrier polyester film, eliminating the need for pre-coating primer process and simplifying production. Process and high production efficiency

Inactive Publication Date: 2016-05-18
江苏东材新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention can effectively solve the problems of complex production and processing, high production cost and low light transmittance of the high barrier polyester film used in the existing packaging field, and provides a high barrier polyester film (single sheet) which is especially suitable for the packaging field and has good performance. sided or double sided)

Method used

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  • High-barrier polyester film and preparation method thereof
  • High-barrier polyester film and preparation method thereof
  • High-barrier polyester film and preparation method thereof

Examples

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Effect test

preparation example Construction

[0038] Preparation of the first part of high barrier resin coating solution

[0039] Basic process: In the container, add 50-80 parts by weight of Solvay Specialty Plastics Co., Ltd. under stirring A063 brand PVDC water emulsion or self-made PVDC water emulsion (high content can be adjusted to contain 50±5% PVDC water emulsion), the stirring speed is 120 rpm. Then take 0.8-1.6 parts by weight of surfactant, 0.1-0.8 parts by weight of leveling agent, 0.1-0.4 parts by weight of defoamer, and 22.4-38.4 parts by weight of distilled water, and add them into the PVDC water emulsion. Stir for 60 minutes, filter and discharge.

Embodiment 1

[0041] Formula 3 of the high barrier resin coating solution of the present invention (the viscosity of the 3# high barrier resin coating solution at 25°C is 60mPa·s):

[0042]

[0043]

Embodiment 2

[0045] High barrier resin coating liquid formulation 4 of the present invention (the 4# high barrier resin coating liquid has a viscosity of 63mPa·s at 25°C):

[0046]

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Abstract

The invention discloses a high-barrier polyester film. The high-barrier polyester film is characterized by comprising a base film and a high-barrier resin coating applied and cured on a single surface or double surfaces of the base film, wherein the thickness of the high-barrier polyester film is 15-80 mu m; the base film is a biaxially stretched polyester film prepared from polyethylene terephthalate. The preparation method of the high-barrier resin coating comprises steps as follows: the polyethylene terephthalate chips are subjected to fusion and chip casting through an extruder and longitudinal stretching to form a thin stock chip, a single surface or double surfaces of the thin stock chip is or are coated with a high-barrier resin coating solution in an on-line coating manner, and the base film with the coating of the high-barrier resin coating solution is obtained after drying, horizontal stretching and heat setting, and the high-barrier polyester film is obtained. The oxygen transmissibility of the high-barrier polyester film is 6.0-12.3 cm<3> / m<2>*d*atm, the moisture transmissibility is 6.1-10.5 g / m<2>*d, and the high-barrier polyester film is particularly applicable to the field of package.

Description

technical field [0001] The invention belongs to polyester film and its preparation, and relates to a high-barrier polyester film and its preparation method. The invention adopts the prepared coating adhesive (ie barrier resin coating solution) to process single-sided or double-sided molded surface high-barrier polyester film in one step, and the prepared high-barrier polyester film is especially suitable for the field of packaging. Background technique [0002] With the development of modern packaging industry, packaging film is used as an essential material in various fields. In the process of use, the requirements for its barrier properties (water vapor barrier, oxygen barrier, gas barrier, etc.) are getting higher and higher. Existing barrier films are mainly processed from barrier film raw materials or prepared by compounding (co-extrusion). The existing technology has the following disadvantages: (1) Although the barrier property can be improved, it affects the light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D127/08C09D151/00C09D7/12C08F259/06C08F220/06C08F220/18C08F220/44C08L67/02
CPCC09D7/65C09D127/08C09D151/003C08F259/06C08L2205/035C08L2205/02C08J2427/08C08J2451/00C08J2367/02C08J7/0427C08L83/04C08L83/12C08F220/18C08F220/1802C08F220/1804
Inventor 李明勇孙建宇石少进
Owner 江苏东材新材料有限责任公司
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