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Production method for UV resistant unstretched polypropylene metalized film

A technology for stretching polypropylene and aluminized film, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc. It can solve the problem of not meeting the requirements of packaging quality assurance, short shelf life of the items in the packaging, and thin film Short service life and other problems, to ensure the adhesion effect, solve the effect of short service life and high surface tension

Inactive Publication Date: 2015-10-21
TONGCHENG FURUN PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The oxidation reaction caused by ordinary unstretched polypropylene aluminized film packaging under ultraviolet light makes the service life of the film short, the shelf life of the items in the package is short, and even premature deterioration occurs, especially for food, which cannot meet the packaging quality requirements
[0003] At present, the adhesion of the aluminum layer of the ordinary unstretched cast polypropylene film in China is below 0.6 Newton, and the adhesion of the aluminum layer is not high. There will be a large surface peeling phenomenon of the aluminum layer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The material includes a corona layer, a core layer, and a heat-sealing layer, wherein the corona layer is composed of the following components in % by weight: 94% ternary random copolymer polypropylene, 4.5% anti-sticking agent, and 1.5% zeolite masterbatch ;

[0032] The core layer consists of the following components in % by weight: terpolymerized polypropylene 100%;

[0033] The heat-sealing layer is composed of the following components by weight %: homopolypropylene 93.8%, anti-adhesive agent 3%, slip agent 2.5%, antistatic agent 0.6%, ultraviolet absorber UV-531 0.1%;

[0034] The corona layer is made of Shanghai Petrochemical F800EDF PP, the core layer is made of Shanghai Petrochemical FC801 PP, and the heat-sealing layer is made of FL7623L PP imported from Singapore.

[0035] The anti-sticking agent is composed of the following components accounting for the weight % of the anti-sticking agent: polypropylene 95%, glass microspheres 2%, polypropylene wax 3%.

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Embodiment 2

[0050] The corona layer is composed of the following components in % by weight: 93% ternary random copolymer polypropylene, 5% anti-sticking agent, and 2% zeolite masterbatch;

[0051] The core layer consists of the following components in % by weight: terpolymerized polypropylene 100%;

[0052] The heat-sealing layer is composed of the following components by weight %: homopolypropylene 93.2%, anti-adhesive agent 3%, slip agent 3%, antistatic agent 0.6%, ultraviolet absorber UV-531 0.2%;

Embodiment 3

[0054] The corona layer is composed of the following components in weight %: ternary random copolymer polypropylene 92%, anti-sticking agent 5.5%, zeolite masterbatch 2.5%;

[0055] The core layer consists of the following components in % by weight: terpolymerized polypropylene 100%;

[0056] The heat-sealing layer is composed of the following components in weight %: homopolypropylene 92.6%, anti-adhesive agent 3%, slip agent 3.5%, antistatic agent 0.6%, ultraviolet absorber UV-531 0.3%.

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Abstract

The invention discloses a production method for a UV resistant unstretched polypropylene metalized film. Materials of a corona layer comprise: 92-94% of ternary polypropylene random copolymer, 4.5-5.5% of abherent, 1.5-2.5% of zeolite master batch. Materials of a core layer comprise 100% ternary co-polypropylene. Materials of a heat-seal layer comprise 92.9-93.9% of homo-polypropylene, 3% of abherent, 2.5-3.5% of slipping agent, 0.6% of antistatic agent, and 0.1-0.3% of ultraviolet light absorber. The method comprises the following steps: batching, mixing, plasticizing, forming, casting sheet, measuring thickness, performing corona, rolling up, curing, and aluminizing. Through adding the ultraviolet light absorber UV531, the film can strongly absorb ultraviolet rays in wavelength of 270-330 nm. The corona layer uses the abherent in specific proportion, so an aluminum coated layer is not easy to fall off. The corona layer is added with natural zeolite powders. Since the zeolite powders have strong adsorbability, the aluminum coated layer can maintain relatively high surface tension. The core layer is not added with a thermal synthesis additive, so that the core layer would not generate any precipitate in a reaction process, thereby ensuring adhesion effect of aluminizing.

Description

technical field [0001] The invention belongs to the field of packaging material production, in particular to a production method of an anti-ultraviolet unstretched polypropylene aluminized film. Background technique [0002] The oxidation reaction caused by ordinary unstretched polypropylene aluminized film packaging under ultraviolet light makes the service life of the film short, the shelf life of the items in the package is short, and even premature deterioration occurs, especially for food, which cannot meet the packaging quality requirements . [0003] At present, the adhesion of the aluminum layer of the ordinary unstretched cast polypropylene film in China is below 0.6 Newton, and the adhesion of the aluminum layer is not high. There will be a large surface peeling phenomenon of the aluminum layer. Contents of the invention [0004] The object of the present invention is to provide a kind of production method of anti-ultraviolet unstretched polypropylene alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40C08L23/12C08L23/14C08K3/34C08K7/20B32B27/32B32B27/18B32B37/06B32B37/10B32B38/00
Inventor 杨峰
Owner TONGCHENG FURUN PACKAGING MATERIAL
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