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An aluminum plastic film and a manufacturing method thereof

A production method and technology of aluminum-plastic film, applied in electrical components, electrochemical generators, circuits, etc., can solve the problems of low impact resistance, low corrosion resistance, etc., to avoid corrosion, not easy to delaminate, and soft color and luster Effect

Inactive Publication Date: 2019-01-11
WUXI ENERGY NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an aluminum-plastic film and its manufacturing method, which are used to solve the problems of low impact resistance and low corrosion resistance of the existing aluminum-plastic film

Method used

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  • An aluminum plastic film and a manufacturing method thereof
  • An aluminum plastic film and a manufacturing method thereof

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Embodiment 1

[0055] Such as figure 1As shown, the present embodiment provides a method for manufacturing an aluminum-plastic film, and the method includes:

[0056] Step 1) Provide PET / PA co-extruded cast film 11, aluminum foil layer 13, heat-sealing layer / core layer / composite layer co-extruded cast polypropylene film 15, outer layer adhesive and inner layer adhesive.

[0057] As an example, the method for making the PET / PA co-extruded cast film 11 includes: providing PET particles and PA particles, and making the PET / PA co-extruded cast film by co-extrusion casting, so that the Compared with traditional nylon (PA) film, PET / PA co-extruded cast film has greater impact resistance and better corrosion resistance.

[0058] Preferably, when making the PET / PA co-extruded cast film 11, the color masterbatch particles are evenly mixed in the PET particles, so that the surface layer of the aluminum-plastic film exhibits the same color as the color masterbatch. Further preferably, when making the...

Embodiment 2

[0076] Such as figure 2 As shown, the present embodiment provides an aluminum-plastic film, the aluminum-plastic film 10 sequentially includes from the inside to the outside: a heat-sealing layer / core layer / composite layer co-extruded cast polypropylene film 15, an inner adhesive layer 14 , an aluminum foil layer 13, an outer adhesive layer 12 and a PET / PA co-extruded cast film 11; the PET / PA co-extruded cast film 11 is dry compounded to the aluminum foil layer 13 by an outer adhesive layer 12 On the outer surface, the heat-sealing layer / core layer / composite layer co-extruded cast polypropylene film 15 is dry compounded to the inner surface of the aluminum foil layer 13 through the inner layer adhesive layer 14; wherein, the PET / PA co-extruded The PET layer 111 in the extruded cast film 11 is located on the outer surface of the aluminum-plastic film 10, and the heat-sealed layer 153 in the co-extruded cast polypropylene film 15 is located on the aluminum-plastic film 10. The...

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Abstract

The invention provides an aluminum plastic film and a manufacturing method thereof. The manufacturing method comprises the following steps: providing a PET / PA coextruded cast film, an aluminum foil layer, a heat seal layer / core layer / composite layer coextruded cast polypropylene film, an outer layer adhesive and an inner layer adhesive; carrying out passivation treatment on the surface of the aluminum foil layer through a passivation liquid; compounding the PET / PA coextruded cast film to an outer surface of the aluminum foil layer by a dry compounding process based on the outer layer binder, wherein a PET layer in the PET / PA coextruded cast film is located on an outer surface of the aluminum plastic film; and compounding the heat seal layer / core layer / composite layer co-extruded cast polypropylene film to an inner surface of the aluminum foil layer by a dry compounding process based on the inner layer adhesive, wherein a heat seal layer in the heat seal layer / core layer / composite layerco-extruded cast polypropylene film is located on an inner surface of the aluminum plastic film. The invention solves the problems of low impact strength and low corrosion resistance of the existingaluminum plastic film.

Description

technical field [0001] The invention relates to the technical field of packaging films for lithium-ion batteries, in particular to an aluminum-plastic film and a manufacturing method thereof. Background technique [0002] With the rapid development of lithium-ion batteries in the fields of 3C, power and energy storage, lithium-ion batteries with flexible packaging aluminum-plastic films have the advantages of large capacity, light weight, and high safety, so they are also more and more valued and applied. Natural aluminum The performance requirements of plastic films are also getting higher and higher. [0003] At present, flexible packaging aluminum-plastic film is generally composed of three layers of films with different functions. The outer layer is made of nylon (PA) film as the protective layer, the middle layer is made of aluminum foil as the insulating layer, and the inner layer is made of cast polypropylene (CPP). The film acts as a heat seal layer. However, the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/0525H01M50/116H01M50/124
CPCH01M10/0525H01M50/116H01M50/124Y02E60/10
Inventor 程跃陈滨王小明鲍晋珍庄志
Owner WUXI ENERGY NEW MATERIALS TECH CO LTD
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