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Compound package film processing method

A composite packaging film and processing method technology, applied in chemical instruments and methods, synthetic resin layered products, applications, etc., can solve the problems of poor ductility, unsatisfactory protection performance, and heavy weight per unit area of ​​the composite packaging film. Achieve the effect of increasing hardness, increasing strength and good gas barrier performance

Inactive Publication Date: 2017-09-26
芜湖市三山区绿色食品产业协会
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a processing method of composite packaging film to solve the problems of poor ductility, low thickness, relatively heavy weight per unit area and unsatisfactory protection performance of the existing composite packaging film

Method used

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Embodiment 1

[0014] A processing method for a composite packaging film, characterized in that: the composite packaging film is composed of a high polymer layer, a metal composite layer, an inner barrier layer, and an outer barrier layer, and the high polymer layer is PET 12 Polyester film layer made of material, the metal composite layer is AL 20 aluminum foil layer, the outer barrier layer is PETRA 30 A heat-sealing film layer, the inner barrier layer is an EVOH mixture layer;

[0015] The manufacture method of this composite packaging film is:

[0016] (1) PET 12 with AL 20 Pre-laminated: PET 12 Material and AL 20 Each material is dried in a drying room at 50°C-60°C for 24 hours, PET 12 with AL 20 After adding organic glue, dry in a drying room at 50°C-60°C for 24 hours;

[0017] (2) PET 12 / AL 20 Composites and PETRA 30 Pre-compound: PET 12 / AL 20 The composite material is dried in a drying room at 50°C-60°C for 24 hours, then put into the film laminating machine, cooled by...

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Abstract

The invention provides a processing method of a composite packaging film, which is characterized in that the composite packaging film is composed of a high polymer layer, a metal composite layer, an inner barrier layer and an outer barrier layer. The manufacturing method of the composite packaging film is: (1) pre-lamination of PET12 and AL20; (2) pre-lamination of PET12 / AL20 composite material and PETRA30; (3) lamination of PET12 / AL20 / PETRA30 and EVOH mixture layer; (4) cutting into bundle. Beneficial effects: the invention adopts the addition of EVOH mixture layer in the high-barrier composite packaging film, which improves the strength of the film body itself, effectively overcomes the defects of low strength of the original product, easy to tear, and easy to break when folded, and improves the film body. It has excellent hardness, good water and gas barrier performance, and has the ability to adapt to changes in external temperature and humidity and other environmental conditions.

Description

technical field [0001] The invention relates to a high-barrier composite packaging film, in particular to a processing method for the composite packaging film. Background technique [0002] At present, the high-barrier composite packaging film is composed of a protective layer, an aluminum foil layer and a barrier layer. In the past, the material of the barrier layer was PVDC (polyvinylidene chloride), and its transparency, gloss, mechanical strength, stretchability and wear resistance , cold resistance and surface strength are not ideal. In addition, the aluminum foil layer is also the only metal foil in the composite packaging film packaging materials. It has a long application time on the packaging. Its barrier protection performance such as water blocking, gas blocking, light shading, etc. is unmatched by any other packaging materials. The packaging material that has not been completely replaced so far has a certain barrier function to oxygen and water vapor, while the ...

Claims

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Application Information

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IPC IPC(8): B32B15/082B32B15/09B32B27/30B32B27/08B32B27/32B32B27/36B29D7/01
CPCB32B15/09B29D7/01B32B15/082B32B27/08B32B27/306B32B27/32B32B27/36B32B2307/558B32B2307/5825B32B2307/7242B32B2307/7265
Inventor 陶胜
Owner 芜湖市三山区绿色食品产业协会
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