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A high-temperature cooking packaging film with strong solvent resistance and low precipitation

A solvent-resistant, high-temperature cooking technology, applied in the field of packaging, can solve the problems of low polyethylene strength and heat resistance, deformed appearance of strips, pad marks, squeeze marks or indentations, etc., to achieve strong solvent resistance, Effect of avoiding precipitation and reducing voids

Active Publication Date: 2022-02-15
JIANGYIN BAOBO PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the composite plastic film, polyethylene is often used as the inner layer material because of its excellent heat sealing performance, but the strength and heat resistance of polyethylene are not high. When making high-temperature cooking packaging, it is extremely easy to be heated and soften during high-temperature cooking. Deformation or poor appearance of strips, pad marks, crush marks or indentations

Method used

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  • A high-temperature cooking packaging film with strong solvent resistance and low precipitation
  • A high-temperature cooking packaging film with strong solvent resistance and low precipitation
  • A high-temperature cooking packaging film with strong solvent resistance and low precipitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A high-temperature cooking packaging film with strong solvent resistance and low precipitation, the outer layer is PET, and the thickness of PET is 12 μm; the first connecting layer is modified high-density polyethylene, and the Vicat softening point of the modified high-density polyethylene is above 125°C, the thickness of the first connection layer is 10 μm; the barrier layer is aluminum foil, and the thickness of the barrier layer is 7 μm; the second connection layer is modified high-density polyethylene, and the thickness of the second connection layer is 8 μm; the inner The layer is a three-layer blown composite film, which is a cyclic olefin copolymer layer, a high-density polyethylene layer, and a copolymerized polypropylene layer from the inside to the outside; no additives are added to the inner layer, and the thickness of the cyclic olefin copolymer layer is 5 μm, the thickness of the high-density polyethylene layer is 10 μm, and the thickness of the copolymeri...

Embodiment 2

[0034]The difference between Example 2 and Example 1 is that a high-temperature cooking packaging film with strong solvent resistance and low precipitation, the outer layer is BOPP, and the thickness of BOPP is 20 μm; the first connecting layer is modified high-density polyethylene, The Vicat softening point of modified high-density polyethylene is above 125°C, the thickness of the first connection layer is 15 μm; the barrier layer is EVOH, and the thickness of the barrier layer is 10 μm; the second connection layer is high-density metallocene polyethylene and ethylene - a mixture of methacrylic acid-acrylate copolymer, the mass ratio of high-density metallocene polyethylene to ethylene-methacrylic acid-acrylate copolymer=3:1, the thickness of the second connection layer is 10 μm; the inner layer It is a three-layer casting film, which is a cyclic olefin copolymer layer, a copolymerized polypropylene layer, and a cyclic olefin copolymer layer from the inside to the outside; no ...

Embodiment 3

[0038] The difference between Example 3 and Example 1 is: a high-temperature cooking packaging film with strong solvent resistance and low precipitation, the outer layer is PET, and the thickness of PET is 20 μm; the first connecting layer is high-density metallocene polyethylene and A mixture of ethylene-methacrylic acid-acrylate copolymer, the mass ratio of high-density metallocene polyethylene to ethylene-methacrylic acid-acrylate copolymer=3:1 Among them, the thickness of the first connection layer is 10μm; the barrier layer It is a silicon-coated OPP film, and the thickness of the barrier layer is 7 μm; the second connection layer is modified high-density polyethylene, and the thickness of the second connection layer is 8 μm; the inner layer is a three-layer blown composite film, from inside to outside The sequence is a copolymerized polypropylene layer, a cyclic olefin copolymer layer, and a copolymerized polypropylene layer; no additives are added to the inner layer, whe...

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Abstract

The invention discloses a high-temperature cooking packaging film with strong solvent resistance and low precipitation, which comprises an outer layer, a first connection layer, a barrier layer, a second connection layer and an inner layer arranged in sequence from the inside to the outside, and the outer layer is PET and BOPP. , the thickness of the outer layer is 12-25 μm; the first connecting layer is a mixture of modified high-density polyethylene or high-density metallocene polyethylene and ethylene-methacrylic acid-acrylate copolymer, high-density metallocene polyethylene and ethylene- The mass ratio of methacrylic acid-acrylic acid ester copolymer = 3~5:1; the thickness of the first connection layer is 10~30μm; the barrier layer is aluminum foil, EVOH, NY, silicon-coated PET film, silicon-coated OPP film, aluminum oxide-coated One of PET film and aluminum oxide-coated OPP film, the thickness of the barrier layer is 7-15 μm; the second connection layer is modified high-density polyethylene or high-density metallocene polyethylene and ethylene-methacrylic acid-acrylate copolymer The inner layer is a mixture of one or more of cyclic olefin copolymers, high-density polyethylene, copolymerized PP, and homopolymerized PP; no additives are added to the inner layer.

Description

technical field [0001] The invention relates to the technical field of packaging, in particular to a high-temperature cooking packaging film with strong solvent resistance and low precipitation. Background technique [0002] Polymer materials are widely used in flexible packaging materials for various foods and medicines. In order to facilitate the processing of polymer materials, various functional additives are often added to packaging materials to improve or realize the smoothness, opening, and Antioxidant, antistatic, antibacterial, etc. However, substances such as additives and additives in packaging materials will migrate into food during food processing and storage and affect the quality and safety of food. For example, in the liquid packaging strips of cosmetics or pharmaceuticals, due to the low surface energy of the inner polyethylene film, the polyethylene surface is more likely to absorb the organic active components in cosmetics or pharmaceuticals, resulting in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/36
CPCB32B27/08B32B27/32B32B27/325B32B27/36B32B2307/306
Inventor 黄湘晖李全布齐家鹏黄文娟陈健赵刚
Owner JIANGYIN BAOBO PACKING