Method for improving deep drawing performance of aluminum-plastic film

An aluminum-plastic film and deep-drawing technology, which is applied in chemical instruments and methods, electronic equipment, applications, etc., can solve the problems of aluminum-plastic film breakthrough, increase operation steps, and increase production cost of aluminum-plastic film, so as to improve friction, Effect of improving drawing performance and reducing production cost
CN112018276AInactive Publication Date: 2020-12-01苏州新景新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
苏州新景新材料科技有限公司
Publication Date
2020-12-01
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a method for improving the deep drawing performance of an aluminum-plastic film for a lithium battery flexible package material. The aluminum-plastic film comprises a heat-resistant resin film, an aluminum foil and a thermoplastic resin film which are arranged in sequence, wherein the heat-resistant resin film and the aluminum foil, and the thermoplastic resin film and thealuminum foil are respectively adhered through an adhesive; the thermoplastic resin film is a PP film, a 2000-10000 ppm slipping agent is added in the preparation process of the PP film, and the slipping agent is one or more of an amide slipping agent, ester with high carbon number and amine oxide. According to the method disclosed by the invention, the addition amount of the slipping agent is controlled in the preparation process of a specific layer (namely the PP film layer) of the specific aluminum-plastic film, the friction force between the PP film of the aluminum-plastic film and the surface of a die is improved, the deep drawing performance of the aluminum-plastic film is improved, the deep drawing limit depth reaches 6 mm or above, and the continuous productivity of the aluminum-plastic film can be improved.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum-plastic films for flexible packaging materials of lithium batteries, and particularly relates to a method for improving the drawing performance of aluminum-plastic films for flexible packaging materials of lithium batteries. Background technique

[0002] Aluminum-plastic film is an important outer packaging material for flexible packaging of lithium-ion batteries. The traditional aluminum-plastic film structure usually includes heat-resistant resin film, metal aluminum foil and thermoplastic resin film arranged in sequence. The resin film and the metal aluminum foil are respectively bonded by an adhesive.

[0003] When the aluminum-plastic film for flexible packaging of lithium ion battery is used for battery molding, it needs to be processed by deep drawing. Since the inner layer of the traditional aluminum-plastic film uses PP as the thermoplastic resin film, it is easy to break the aluminum-pl...

Claims

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