High barrier aluminum-plating composite film for packing liquid dairy product

An aluminized composite film and packaging technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of poor oxygen barrier, easy breakage of aluminum foil, pollution, etc., and achieve high water resistance, high gas barrier, high The effect of folding resistance

Inactive Publication Date: 2006-12-20
ZHEJIANG BILI POLYMER TECH CO LTD
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Problems solved by technology

[0004] The present invention aims to solve the problems that existing three-layer polyethylene liquid packaging film has poor oxygen barrier properties, the packaging film itself pollutes the packaged dairy products, the inner layer of the film is black, and the aluminum foil of the aluminum-plastic composite film is easily broken.

Method used

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  • High barrier aluminum-plating composite film for packing liquid dairy product

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0009] As shown in the figure, the present invention has a hierarchical structure, and the hierarchical structure is a printable layer 1, an adhesive layer 2, an aluminum layer 3, an adhesive layer 4, a barrier layer 5, an adhesive layer 6 and a thermal layer from outside to inside. Sealing layer 7. The barrier layer 5 is made of polyvinylidene chloride copolymer or ethylene-vinyl alcohol copolymer.

[0010] The material of the printable layer 1 is polyethylene, selected from one of low-density polyethylene, linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, metallocene-catalyzed polyethylene, or low-density polyethylene , linear low density polyethylene, medium density polyethylene, high density polyethylene and a blend of at least two components of metallocene-catalyzed polyethylene.

[0011] The material of the...

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Abstract

The invention relates to a high insulated aluminum composite film used to pack liquid milk, wherein it has multilayer structure, from outer to inner, as printing layer, adhesive layer, aluminum layer, adhesive layer, baffle layer, adhesive layer and thermal sealing layer; the baffle layer is made from polyvinylidene chloride polymer or ethane-ethenol polymer. Compared with traditional plastic soft film, the invention avoids the carbon black layer and increases the aluminum layer and oxygen baffle layer, to obtain high waterproof ability and high insulated property, etc.

Description

technical field [0001] The invention relates to a composite film structure, in particular to a high-barrier aluminized composite film for packaging liquid dairy products. Background technique [0002] The currently widely used plastic flexible packaging film for liquid dairy products is composed of three layers of polyethylene, and the defects of this product are: first, poor oxygen barrier properties, resulting in short shelf life of dairy products and unsustainable fragrance of dairy products; second, pollution to dairy products, which It is because this kind of film contains low-molecular compounds, and these low-molecular compounds are easy to contaminate dairy products and affect the taste of dairy products. The third is to add carbon black in the film as an ultraviolet barrier material, making the film black and unattractive. Contents of the invention [0003] The purpose of the invention is to develop a high-barrier alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B15/04B32B7/12
Inventor 王彤
Owner ZHEJIANG BILI POLYMER TECH CO LTD
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