Battery packaging material

A technology for packaging materials and batteries, which is applied in battery box/cover materials, household packaging, packaging, etc., can solve the problems of insufficient curing of thermosetting resins, defective products, and inability of the coating layer to have chemical resistance, etc., to achieve Excellent slip effect, prevent product failure, and shorten processing preparation time

Active Publication Date: 2015-12-09
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, when a coating layer is formed from a thermosetting resin, a two-component curable resin is used, and the curing requires aging under high temperature conditions for several days to several weeks, which leads to a long preparation time for processing. Exposure to high temperature conditions, product failure occurs, these also become a problem
On the other hand, in order to suppress product defects due to aging under such high-temperature conditions, it is effective to increase the curing temperature of the two-component curing resin and perform rapid curing (curing in a short time), but in the prior art, When the two-component curing resin is quickly cured, the curing of the thermosetting resin cannot be performed sufficiently, and as a result, the coating layer cannot have sufficient chemical resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A-32A and comparative example 1A-18A

[0178] [Manufacture of packaging materials for batteries]

[0179] Using a dry lamination method, a barrier layer 4 composed of aluminum foil (thickness 40 μm) that was chemically converted on both sides was laminated on the base layer 2 composed of a biaxially stretched nylon film (thickness 25 μm). Specifically, a two-component urethane adhesive (polyol compound and aromatic isocyanate compound) is applied to one surface of the aluminum foil, and an adhesive layer 3 (thickness 4 μm) is formed on the barrier layer 4. Next, the adhesive layer 3 and the base material layer 2 on the barrier layer 4 are bonded under pressure and heating, and then subjected to an aging treatment at 40°C for 24 hours, thereby preparing the base layer 2 / adhesive layer 3 / barrier layer 4 laminated body. Among them, the chemical conversion treatment of the aluminum foil used as the barrier layer 4 is performed by applying a treatment solution containing a phenolic resin, a chromium fluoride compound,...

Embodiment 1B-32B

[0204] Examples 1B-32B and Comparative Examples 1B-18B (the resin forming the coating layer contains a slip agent Case)

[0205] [Manufacture of packaging materials for batteries]

[0206] Using a dry lamination method, a barrier layer 4 composed of aluminum foil (thickness 40 μm) that was chemically converted on both sides was laminated on the base layer 2 composed of a biaxially stretched nylon film (thickness 25 μm). Specifically, a two-component urethane adhesive (polyol compound and aromatic isocyanate compound) was applied to one surface of the aluminum foil, and an adhesive layer 3 (thickness 4 μm) was formed on the barrier layer 4. Next, the adhesive layer 3 and the base material layer 2 on the barrier layer 4 are bonded under pressure and heating, and then subjected to an aging treatment at 40°C for 24 hours, thereby preparing the base layer 2 / adhesive layer 3 / barrier layer 4 laminated body. Among them, the chemical conversion treatment of the aluminum foil used as...

Embodiment 1C～68

[0234] Examples 1C to 68C and Comparative Examples 1 to 3C (the resin forming the coating layer contains reactive (In the case of resin beads)

[0235] [Manufacture of packaging materials for batteries 1C]

[0236] Using the dry lamination method, a barrier layer composed of aluminum foil (thickness 40 μm) that was chemically converted on both sides was laminated on a base layer composed of a biaxially stretched nylon film (thickness 25 μm). Specifically, a two-component polyurethane adhesive (polyol compound and aromatic isocyanate compound) was applied to one surface of the aluminum foil to form an adhesive layer (thickness 4 μm) on the barrier layer. Next, the adhesive layer on the barrier layer and the base layer were bonded under pressure and heating, and then subjected to an aging treatment at 40° C. for 24 hours to prepare a laminate of base layer / adhesive layer / barrier layer. Among them, the chemical conversion treatment of the aluminum foil used as the barrier layer is...

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Abstract

The purpose of the present invention is to provide a film-like battery packaging material in which a coating layer, which can be cured in a short time and exhibits superior chemical resistance, is provided to a substrate layer surface. In the battery packaging material, which comprises a laminate body that includes at least a coating layer (1), a substrate layer (2), an adhesive layer (3), a barrier layer (4), and a sealant layer (5), in that order, the use of a resin composition containing a heat-curable resin and a curing accelerator as the coating layer (1) enables the formation of a coating layer that can be cured in a short time and contributes to electrolyte liquid, etc., resistance.

Description

Technical field [0001] The present invention relates to a film-like battery packaging material provided with a coating layer capable of curing in a short time and imparting resistance to an electrolyte or the like on the surface of a substrate layer. Background technique [0002] Various types of batteries have been developed. In all batteries, packaging materials are an indispensable component for packaging battery elements such as electrodes and electrolytes. In the prior art, metal packaging materials are mostly used as battery packaging. However, in recent years, with the high performance of electric vehicles, hybrid electric vehicles, personal computers, cameras, mobile phones, etc., a variety of batteries are required The shape is required to be thinner and lighter. However, the use of metal battery packaging materials that are mostly used in the prior art has disadvantages that it is difficult to cope with the diversification of shapes, and weight reduction has a limit. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02B32B27/30H01M50/126H01M50/145
CPCH01M2/0292B32B7/12B32B15/08B32B27/18B32B27/26B32B27/308B32B27/34B32B27/36B32B27/38B32B27/40B32B27/42B32B2264/02B32B2307/714B32B2307/746B32B2439/00B32B2457/10H01M2/0277H01M2/0287B32B2264/025B32B2264/0292B32B2255/10B32B2255/26Y02E60/10H01M50/124H01M50/1245H01M50/126H01M50/145
Inventor 桥本洋平山下力也堀弥一郎
Owner DAI NIPPON PRINTING CO LTD
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