Packaging material for batteries, method for producing same and battery

Abstract

Provided is a packaging material for batteries, which has high formability and enables the achievement of excellent continuous productivity of batteries. A packaging material for batteries, which is configured from a laminate that comprises at least a base layer, a barrier layer and a thermally fusible resin layer in this order, and wherein: the thermally fusible resin layer contains an amide-based lubricant and at least one agent selected from the group consisting of an antioxidant, a light stabilizer and a nucleator; and the absorption spectrum intensity ratio X = A / B as calculated using theabsorption peak intensity A at the wavenumber of 1,650 c<-1> ascribed to C=O expansion / contraction vibration of the amide groups of the amide-based lubricant and the absorption peak intensity B at 1,460 cm-1 ascribed to -CH2- deformation vibration contained in the thermally fusible resin layer, said absorption peak intensity A and absorption peak intensity B being determined from the absorption spectrum obtained by spectrally dividing reflected light when the surface of the thermally fusible resin layer is irradiated with infrared light, is within the range of from 0.05 to 0.80 (inclusive).

Description

technical field [0001] The present invention relates to a packaging material for batteries, a manufacturing method thereof, and batteries. Background technique [0002] Various types of batteries have been developed in the prior art, and in all the batteries, packaging materials have become indispensable components in order to package battery elements such as electrodes and electrolytes. In the prior art, metal packaging materials are often used as battery packaging, but in recent years, with the high performance of electric vehicles, hybrid electric vehicles, personal computers, cameras, mobile phones, etc., various types of packaging materials are also required for batteries. The same shape, and also requires thinner and lighter weight. However, it is difficult to cope with the diversification of shapes with the metal battery packaging materials commonly used at present, and there is a disadvantage that weight reduction also has a limit. [0003] Therefore, as a battery ...

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Problems solved by technology

In this way, when the heat-sealable resin layer is heat-sealed, the melting method of the portion to which the lubricant adheres becomes uneven, resulting in poor sealing.

In order to prevent this phenomenon, it is necessary to increase the frequency of cleaning to remove the lubricant adhering to the mold, and there is a problem that the continuous productivity of the battery decreases

[0006] On the other hand, when the amount of the amide-based lubricant located on the surface of the heat-meltable resin layer is too small, there is a problem that the formability of the battery packaging material decreases due to a decrease in the sliding properties of the battery packaging material.

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