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High-light-resistance and high-barrier heat-shrinkable polyester film and preparation method and application thereof

A technology of polyester film and modified polyester, which is applied in the direction of chemical instruments and methods, flexible coverings, synthetic resin layered products, etc., which can solve the problems of affecting taste or shelf life, oxidation reaction, etc., and achieve oxygen barrier Infiltration of water vapor, satisfying stretching and aesthetic effects

Active Publication Date: 2021-10-26
伊利伊诺科技(上海)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some or all of the ingredients in these products are sensitive to light, and

Method used

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  • High-light-resistance and high-barrier heat-shrinkable polyester film and preparation method and application thereof
  • High-light-resistance and high-barrier heat-shrinkable polyester film and preparation method and application thereof
  • High-light-resistance and high-barrier heat-shrinkable polyester film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] This embodiment provides a high-blocking high-barrier heat-shrinkable polyester film for heat-shrinkable labels, wherein,

[0073] The high light-blocking high-barrier heat-shrinkable polyester film for heat-shrinkable labels includes: A layer of modified polyester layer and B layer of metal layer arranged sequentially from top to bottom; the thickness of the A layer of modified polyester layer is 50 μm; The thickness of layer B is 500 angstroms;

[0074] The modified polyester layer of layer A includes three sub-layers, a surface printing layer of layer a, a light-shielding functional layer of layer b and a surface pretreatment layer of layer c arranged in sequence from top to bottom, and the metal layer of layer B is arranged on the surface of layer c The lower surface of the pretreatment layer; taking the total thickness of the modified polyester layer of the A layer as 100%, the thickness ratios of the surface printing layer, the b-layer light-shielding functional l...

Embodiment 2

[0095] This embodiment provides a high-blocking high-barrier heat-shrinkable polyester film for heat-shrinkable labels, wherein,

[0096] The high-light-blocking and high-barrier heat-shrinkable polyester film for heat-shrinkable labels includes: A layer of modified polyester layer, B layer of metal layer and C layer of protective coating arranged in sequence from top to bottom; A layer of modified polyester layer The thickness of the layer is 40 μm; the thickness of the B layer is 500 angstroms; the thickness of the C layer protective coating is 1.2 μm;

[0097] The modified polyester layer of layer A includes three sub-layers, a surface printing layer of layer a, a light-shielding functional layer of layer b and a surface pretreatment layer of layer c arranged in sequence from top to bottom, and the metal layer of layer B is arranged on the surface of layer c On the lower surface of the pretreatment layer; taking the total thickness of the modified polyester layer of the A l...

Embodiment 3

[0121] This embodiment provides a high-blocking high-barrier heat-shrinkable polyester film for heat-shrinkable labels, wherein,

[0122] The heat-shrinkable label uses a high light-blocking high-barrier heat-shrinkable polyester film (including: A layer of modified polyester layer and B layer of metal layer arranged in sequence from top to bottom; the thickness of A layer of modified polyester layer is 50 μm ; The thickness of layer B is 750 Angstroms;

[0123] The modified polyester layer of layer A includes three sub-layers, a surface printing layer of layer a, a light-shielding functional layer of layer b and a surface pretreatment layer of layer c arranged in sequence from top to bottom, and the metal layer of layer B is arranged on the surface of layer c On the lower surface of the pretreatment layer; taking the total thickness of the modified polyester layer of the A layer as 100%, the thickness ratios of the surface printing layer, the b-layer light-shielding functiona...

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Abstract

The invention provides a high-light-resistance and high-barrier heat-shrinkable polyester film and a preparation method and application thereof. The polyester film at least comprises a modified polyester layer A and a metal layer B, wherein the modified polyester layer A at least comprises a shading functional layer b, the raw material composition of the shading functional layer b comprises a light blocking material and resin b, the resin b comprises modified polyethylene glycol terephthalate b, and a modifier used by the modified polyethylene glycol terephthalate b comprises at least one of acid and alcohol. The above polyester film can cover the surface of a container directly or after being shrunk at 60-150 DEG C upon pattern printing, so that the effects of blocking light, moisture and oxygen are achieved, the transmission of ultraviolet rays, infrared rays and visible light is effectively prevented, and the penetration of oxygen and water vapor is blocked. the requirements of beverage packaging for shading, moisture resistance and oxygen resistance are met, and meanwhile the requirement of packaging for attractiveness is met.

Description

technical field [0001] The invention belongs to the field of polymer packaging materials, and in particular relates to a high light-blocking multilayer polyester film for heat-shrinkable labels, a preparation method and application thereof. Background technique [0002] With the improvement of people's living standards, dairy products have gradually become a necessity in people's lives. Juice drinks and functional drinks are also gradually favored by consumers. However, some or all of the ingredients in these products are sensitive to light, and will undergo oxidation reactions when exposed to light, affecting taste or shelf life. At the same time, in order to maintain the aroma and taste of the product, the packaging material is also required to have good barrier properties. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a high light-blocking high-barrier polyester film for heat-shrinkabl...

Claims

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Application Information

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IPC IPC(8): B65D65/40B32B27/36B32B27/06B32B15/09B32B33/00B29C48/00B29C48/08C23C14/20C23C14/24
CPCB65D65/40B32B27/36B32B27/06B32B15/09B32B33/00B29C48/0018B29C48/08C23C14/20C23C14/24B32B2307/41B32B2307/7244B32B2307/7246
Inventor 尹化洁曾科邓玉明
Owner 伊利伊诺科技(上海)有限责任公司