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Flexible packaging modified CPP (Chlorinated Polypropylene) thin film and production method thereof

A flexible packaging and modification technology, which is applied in the field of flexible packaging modified CPP film, can solve the problems of content deformation, affecting the final customer's purchase desire of the product, etc., and achieve the effect of improving the heat sealing strength, improving the appearance, and promising application prospects

Inactive Publication Date: 2014-01-22
CHENGDU ZHONGBAO ZHUANGDA MEMBRANE
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Existing food films are easily deformed with the contents after high-temperature cooking after vacuuming, which seriously affects the final customer's desire to purchase the product

Method used

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  • Flexible packaging modified CPP (Chlorinated Polypropylene) thin film and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Preparation of Modified CPP Film for Flexible Packaging

[0022] ①Corona outer layer raw material A: Mix homopolymer PP (Dushanzi 830) and copolymer PP (Dushanzi 725) to form raw material A. Wherein, the weight percentage of homopolymerized PP is 20-40%, and the weight percentage of copolymerized PP is 60-80%.

[0023] ② Adhesive intermediate layer raw material B: take copolymerized PP (Dushanzi 725) and metallocene (Exxon 3518) and mix it into raw material B. Among them, the weight percentage of copolymerized PP is 70%, and the weight percentage of metallocene is 30%.

[0024] ③Heat-sealing inner layer raw material C: Mix bimodal PE (Mitsui SP0540), copolymerized PP (Korean Samsung TF400) and opening slip agent to form raw material C. Among them, bimodal PE weight percentage: copolymerized PP weight percentage is 25%,: 75%, and the weight of opening smooth agent is 2% of the sum of bimodal PE and copolymerized PP weight.

[0025] ④ Feed corona outer layer ...

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Abstract

The invention discloses a flexible packaging modified CPP (Chlorinated Polypropylene) thin film, and relates to a food thin film. The flexible packaging modified CPP thin film comprises a corona outer layer, a middle bonding layer and a hot-sealing inner layer, wherein the corona outer layer comprises 20-40 percentage by weight of homopolymerization PP (Polypropylene) and 60-80% percentage by weight of copolymerization PP, the middle bonding layer comprises 70 percentage by weight of copolymerization PP and 30 percentage by weight of metallocene; and the hot-sealing inner layer comprises 25 percentage by weight of doublet PE (Poly Ethylene) and 75 percentage by weight of copolymerization PP. Compared with the prior art, the flexible packaging modified CPP thin film disclosed by the invention has the advantages that contents can be set in a packaging stage, the bad phenomena such as skewing or fragmentation does not occur, and after packaging, the overall appearance of products such as the flatness and the stiffness is improved.

Description

technical field [0001] The invention relates to a film, in particular to a modified CPP film for flexible packaging. Background technique [0002] Existing films for food are easily deformed with the content after high-temperature cooking after vacuuming, which seriously affects the purchase desire of final customers of the product. Contents of the invention [0003] One of the purposes of the present invention is to provide a modified CPP film for flexible packaging, which can shape the content during the packaging stage without any deviation or fragmentation, and the packaging increases the number of products. The overall perception of flatness and stiffness. [0004] The technical solution is: a modified CPP film for flexible packaging, which is composed of a corona outer layer, a bonding middle layer and a heat-sealing inner layer, and the weight percentage of the corona outer layer is: homopolymerized PP 20 - 40%, copolymerized PP60 - 80%; the weight percent composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/20B32B27/32B65D65/40B29C47/06
Inventor 史宣华黄体状周斌
Owner CHENGDU ZHONGBAO ZHUANGDA MEMBRANE
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