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High-heat-resistance heat-shrinkable polyester film, and preparation method and application thereof

A polyester film, photothermal technology, applied in chemical instruments and methods, packaging recycling, sustainable manufacturing/processing, etc., can solve problems affecting taste or shelf life, hidden dangers of food safety, barriers, etc., to solve problems that cannot be recycled , to ensure food safety, the effect of efficient shading packaging

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 will undergo oxidation reactions when exposed to light, affecting taste or shelf life
[0003] In order to solve such problems, people have adopted various additives and light-blocking materials in the packaging bottle material. Although it can effectively solve the oxidation problem, it has brought many disadvantages at the same time: firstly, the bottle-making equipment is expensive, which is difficult for the application of the product. Create barriers; in addition, the additives in the packaging bottle will slowly migrate to the contents, which will bring hidden dangers to food safety; in addition, the work of sustainable development is becoming more and more urgent, and it is difficult to realize the recycling of packaging bottles with various additives Reuse

Method used

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  • High-heat-resistance heat-shrinkable polyester film, and preparation method and application thereof
  • High-heat-resistance heat-shrinkable polyester film, and preparation method and application thereof
  • High-heat-resistance heat-shrinkable polyester film, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment provides a high light-blocking heat-shrinkable polyester film for heat-shrinkable labels, wherein,

[0064] The polyester film is composed of a white functional layer of layer A, a black functional layer of layer B and a white functional layer of layer C, and the white functional layer of layer A and the white functional layer of layer C are respectively located on the upper and lower surfaces of the black functional layer of layer B;

[0065] The thickness of the polyester film is 40 μm, and the total thickness of the polyester film is 100%, and the thickness ratio of the white functional layer of the A layer, the black functional layer of the B layer and the white functional layer of the C layer is 30:60:10;

[0066] The raw material composition of the white functional layer of layer A and the white functional layer of layer C includes functional white masterbatch and modified polyethylene terephthalate with a mass ratio of 84:16; wherein, the functiona...

Embodiment 2

[0079] This embodiment provides a high light-blocking heat-shrinkable polyester film for heat-shrinkable labels, wherein,

[0080] The polyester film is composed of A layer white functional layer, B layer black functional layer, C layer white functional layer, D layer and E layer; A layer white functional layer and C layer white functional layer are respectively located above and below the B layer black functional layer Two surfaces, layer D is located on the outer surface of the white functional layer of layer A, the outer surface of the white functional layer of layer A refers to the other side opposite to the surface of the white functional layer of layer A that is in contact with the black functional layer of layer B, and layer E is located on layer C The outer surface of the white functional layer, the outer surface of the white functional layer of layer C refers to the other side opposite to the surface of the white functional layer of layer C that is in contact with the ...

Embodiment 3

[0097] This embodiment provides a high light-blocking heat-shrinkable polyester film for heat-shrinkable labels, wherein,

[0098] The polyester film is composed of a white functional layer of layer A, a black functional layer of layer B and a white functional layer of layer C, and the white functional layer of layer A and the white functional layer of layer C are respectively located on the upper and lower surfaces of the black functional layer of layer B;

[0099] The thickness of the polyester film is 60 μm, and the total thickness of the polyester film is 100%, and the thickness ratio of the white functional layer of the A layer, the black functional layer of the B layer and the white functional layer of the C layer is 25:50:25;

[0100] The raw material composition of the white functional layer of layer A and the white functional layer of layer C includes polyethylene terephthalate, modified polyethylene terephthalate and functional white masterbatch with a mass ratio of 1...

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Abstract

The invention provides a high-heat- resistance heat-shrinkablepolyester film, and a preparation method and application thereof. The polyester film at least comprises a white functional layer A and a black functional layer B; the raw materials of the layer A comprise a white pigment A and resin A, the resin A comprises modified polyethylene glycol terephthalate A, and the white pigment A accounts for 5-50% by mass; and the layer B is prepared from black pigment B and resin B, the resin B contains modified polyethylene glycol terephthalate B, and the black pigment B accounts for 0.0025-15% by mass. The modified polyethylene glycol terephthalate A and the modified resin B use at least one of isophthalic acid, 1, 4-cyclohexanedimethanol, octylpentanediol, propylene glycol and butanediol as a modifier. The polyester film can tightly cover the surface of a container after being shrunk directly or after being subjected to pattern printing at the temperature of 60-150 DEG C, so that the effects of light resistance and decoration are achieved, and the requirements of beverage packaging for light shading and attractiveness are 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. [0003] In order to solve such problems, people have adopted various additives and light-blocking materials in the packaging bottle material. Although it can effectively solve the oxidation problem, it has brought many disadvantages at the same time: firstly, the bottle-making equipment is expensive, which is difficult for the application of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/20B32B27/06B32B33/00C08L67/02C08K3/22C08K3/26C08K3/04C08K3/36C08J5/18B65D25/20
CPCB32B27/08B32B27/36B32B27/20B32B33/00C08J5/18B65D25/205C08J2367/02C08J2467/02C08K2003/2241C08K2003/265C08K3/04C08K3/36Y02W30/80
Inventor 尹化洁邓玉明
Owner 伊利伊诺科技(上海)有限责任公司