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Steaming and boiling-resistant composite casting polypropylene (CPP) film

A casting compounding and film technology, applied in the direction of synthetic resin layered products, flexible covering, packaging, etc., can solve the problems of low definition, poor impact resistance and high temperature resistance of CPP film, and achieve light weight. , Good impact resistance, not easy to crack

Inactive Publication Date: 2018-04-06
ANHUI SONGTAI PACKAGING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common high-temperature cooking CPP films have disadvantages such as low clarity, poor impact resistance, easy cracking, and low temperature resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of retort-grade casting composite CPP film, comprising in turn: a heat-sealing layer, a core layer, and a corona layer, the core layer being arranged between the heat-sealing layer and the corona layer; layer accounts for 14%, the core layer accounts for 65%, and the corona layer accounts for 21%;

[0015] In terms of weight percentage, the heat-sealing layer is composed of 88% terpolymerized polypropylene, 8% surfactant, and 4% slippery agent; the core layer includes 90% homopolypropylene, 10% toughening agent, The corona layer comprises 50% of homopolypropylene, 35% of terpolymerized polypropylene, 10% of metallocene POE, and 5% of antistatic paint.

Embodiment 2

[0017] A kind of retort-grade casting composite CPP film, comprising in turn: a heat-sealing layer, a core layer, and a corona layer, the core layer being arranged between the heat-sealing layer and the corona layer; layer accounted for 20%, said core layer accounted for 55%, said corona layer accounted for 25%;

[0018] In terms of weight percentage, the heat-sealing layer is composed of 95% terpolymerized polypropylene, 3% surfactant, and 2% slippery agent; the core layer includes 96% homopolypropylene, 4% toughening agent, The corona layer comprises 65% of homopolypropylene, 20% of ternary copolymerized polypropylene, 5% of metallocene POE, and 10% of antistatic paint.

Embodiment 3

[0020] A kind of retort-grade casting composite CPP film, comprising in turn: a heat-sealing layer, a core layer, and a corona layer, the core layer being arranged between the heat-sealing layer and the corona layer; layer accounts for 18%, the core layer accounts for 62%, and the corona layer accounts for 20%;

[0021] In terms of weight percentage, the heat-sealing layer is composed of 91% terpolymerized polypropylene, 4% surfactant, and 5% slippery agent; the core layer includes 92% homopolypropylene, and 8% toughening agent. The corona layer comprises 58% of homopolypropylene, 24% of terpolymerized polypropylene, 6% of metallocene POE, and 12% of antistatic coating.

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PUM

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Abstract

The invention relates to the technical field of plastic packaging, in particular to steaming and boiling-resistant composite casting polypropylene (CPP) film. The casting polypropylene (CPP) film sequentially comprises a heat-seal layer, a core layer and a corona layer; the core layer is arranged between the heat-seal layer and the corona layer; the casting polypropylene (CPP) film comprises, by weight, 14%-20% of heat-seal layer, 55%-65% of core layer and 20%-25% of corona layer; the heat-seal layer is composed of 88%-95% of terpolymer polypropylene, 3%-8% of surfactant and 2%-5% of slippingagent, the core layer comprises 90%-96% of homo-polypropylene and 4%-10% of flexibilizer, and the corona layer comprises 50%-65% of homo-polypropylene, 20%-35% of terpolymer polypropylene, 5%-10% of metallocene POE and 5%-12% of anti-static coatings. The steaming and boiling-resistant composite casting polypropylene (CPP) film is good in stability, high in definition, good in impact resistance performance and not likely to crack and has good high temperature resistance performance.

Description

technical field [0001] The invention relates to the technical field of printing and packaging, in particular to a cooking grade casting composite CPP film. Background technique [0002] Cast film is a kind of non-stretched, non-oriented flat extrusion film produced by melt casting and quenching. There are two ways of single-layer casting and multi-layer co-extrusion casting. Compared with blown film, it is characterized by fast production speed, high output, and excellent transparency, gloss, and thickness uniformity of the film. At the same time, because it is a post-extrusion film process, such as printing and compounding, it is very convenient, so it is widely used in the packaging of food, medical supplies, textiles, flowers, and daily necessities. The production of salivating film in my country started relatively late (in the 1980s), and the foundation is relatively weak, but the development speed is relatively fast. After nearly 20 years of continuous development and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/06B32B27/08B32B33/00B65D65/40
CPCB32B27/32B32B27/08B32B27/18B32B27/327B32B33/00B32B2307/306B32B2307/554B32B2307/558B32B2307/5825B65D65/40
Inventor 焦国平齐继业方兴旺
Owner ANHUI SONGTAI PACKAGING MATERIALS
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