Aluminum-plastic film and preparation method thereof

An aluminum-plastic film and plastic layer technology, applied in chemical instruments and methods, other household appliances, structural parts, etc., to achieve the effects of improved warpage, large shrinkage, and increased shrinkage stress

Pending Publication Date: 2021-04-30
SUZHOU FIRST PV MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide an aluminum-plastic film and its preparation method, to solve the problem that the prior art cannot improve or eliminate the

Method used

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  • Aluminum-plastic film and preparation method thereof
  • Aluminum-plastic film and preparation method thereof
  • Aluminum-plastic film and preparation method thereof

Examples

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preparation example Construction

[0059] The present invention also provides a method for preparing the aforementioned aluminum-plastic film. The first plastic layer is prepared by co-extrusion cast film formation, and in the process of co-extrusion cast film formation, different extrusion dies are used to extrude the corresponding materials of the corona layer, heat-resistant layer and heat-sealing layer At the same time, different extrusion dies are used to respectively extrude the materials of the cladding layer and the core layer; an aluminum foil layer is provided, and the first plastic layer is adhered to the first surface of the aluminum foil layer; a second plastic layer is provided, and the second plastic layer is provided. Two plastic layers are adhered to the second surface of the aluminum foil layer.

[0060]The present invention prepares the first plastic layer by means of co-extrusion casting film, adopts different extrusion dies to respectively extrude the corresponding materials of the corona l...

Embodiment 1

[0073] In this embodiment, a kind of aluminum-plastic film is made, such as Figure 4 As shown, it includes a first plastic layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer, and a second plastic layer from top to bottom. The specific preparation method is as follows:

[0074] Step 1: Use different extrusion dies to extrude the corresponding materials of the corona layer, heat-resistant layer and heat-sealing layer, and in the process of extruding the heat-resistant layer, use different extrusion dies to respectively extrude the package Materials for cladding and core and complete cladding, where:

[0075] In the heat-sealing layer, the content of homopolypropylene material (Borealis BC300BF) is 80 parts, the content of polyolefin elastomer material (ExxonMobil 9061) is 20 parts, and additional processing aid PPA (0.6 parts) and antioxidant are added (0.2 part of antioxidant 619), slippery agent (0.1 part of oleic acid amide), antistatic agent (0...

Embodiment 2

[0083] In this embodiment, a kind of aluminum-plastic film is made, such as Figure 5 As shown, it includes a first plastic layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer, a second plastic layer, a third adhesive layer, and a third plastic layer from top to bottom. The specific preparation method is as follows:

[0084] Step 1: Use different extrusion dies to extrude the corresponding materials of the corona layer, heat-resistant layer and heat-sealing layer, and in the process of extruding the heat-resistant layer, use different extrusion dies to respectively extrude the package The materials of cladding layer and core layer and complete cladding, also include processing aid (PPA 0.6wt%), antioxidant (antioxidant 6190.15wt%), cool Slip agent (erucamide 0.15wt%). in:

[0085] The content of homopolypropylene material (Hanwha Total Petrochemical RF402) in the heat-sealing layer is 100wt%, the thickness of the heat-sealing layer is 15 μm, and t...

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Abstract

The invention provides an aluminum-plastic film and a preparation method thereof. The aluminum-plastic film comprises an aluminum foil layer, a first plastic layer and a second plastic layer. The first plastic layer is a multi-layer polypropylene layer, the multi-layer polypropylene layer comprises a corona layer, a heat-resistant layer and a heat-seal layer which are arranged in a stacked mode, the corona layer is arranged close to the aluminum foil layer, and the heat-seal layer is arranged away from the aluminum foil layer. The heat-resistant layer comprises a core layer and a coating layer coating the periphery of the core layer, and the core layer comprises a plurality of stress buffer strips which are arranged in an oriented manner and are arranged at intervals. The warping phenomenon of the aluminum-plastic film is more effectively improved or eliminated, the thickness of the original specification of the aluminum-plastic film is not changed, and the influence on forming, heat sealing and other properties is smaller.

Description

technical field [0001] The invention relates to the field of soft-pack lithium-ion batteries, in particular to an aluminum-plastic film and a preparation method thereof. Background technique [0002] With the rapid increase in the types and quantities of electronic products, the requirements for the quality, demand and manufacturing process of batteries are also increasing. Soft-pack lithium-ion batteries have unique advantages in terms of high energy density per unit mass and reliable safety. However, soft-pack lithium-ion batteries still have deficiencies in terms of warping after molding and electrolyte resistance. , therefore, it is currently necessary to improve its related performance. [0003] The aluminum-plastic film is a component unit of the soft-pack lithium-ion battery, which can protect the battery cells inside the soft-pack lithium-ion battery, and is an important guarantee for the normal operation of the soft-pack lithium-ion battery. However, the aluminum-...

Claims

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Application Information

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IPC IPC(8): B32B15/20B32B15/085B32B3/08B32B27/32B32B27/08B32B27/40B32B27/34B32B15/088B32B27/36B32B27/06B32B7/12B32B33/00B32B37/12H01M50/129
CPCB32B15/20B32B15/085B32B3/08B32B27/32B32B27/08B32B27/40B32B27/34B32B15/088B32B27/36B32B7/12B32B33/00B32B37/12B32B2307/51B32B2307/736B32B2457/10Y02E60/10
Inventor 胡朝阳宋阳范开成余小玉
Owner SUZHOU FIRST PV MATERIAL CO LTD
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