Laminate for nonaqueous battery

A technology for non-aqueous batteries and laminates, which is applied in the direction of non-aqueous electrolytes, secondary batteries, battery components, etc., and can solve problems such as lack of cross-linking treatment, extrusion of pressure-sensitive adhesive layers, and insufficient adhesive strength, etc. problem, achieve the effect of improving applicability, suppressing deterioration, and preventing short circuit

Inactive Publication Date: 2012-08-01
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, its adhesive strength is insufficient because the pressure-sensitive adhesive layer of such an adhesive laminate is not subjected to any cross-linking treatment
As a result, extrusion of the pressure sensitive adhesive layer may occur when the laminate is used in the form of a tape

Method used

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  • Laminate for nonaqueous battery
  • Laminate for nonaqueous battery
  • Laminate for nonaqueous battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0146] Block PP (PC480A, manufactured by SunAllomer Ltd., MFR=1.7 (230° C., 2.16 kgf)) as the substrate layer and an α-olefin-based pressure-sensitive adhesive (Tafthren H5002, Sumitomo Chemical Company, Limited) was loaded into an extruder, and then melt-extruded by an inflation molding method. Thus, a laminate (1) for a non-aqueous battery (thickness: substrate layer / pressure-sensitive adhesive layer=30 μm / 10 μm) was produced.

[0147]Table 1 shows the evaluation results.

Embodiment 2

[0149] Block PP (PC480A, manufactured by SunAllomer Ltd., MFR=1.7 (230° C., 2.16 kgf)) as the substrate layer and 100 parts by weight of α-olefin-based pressure-sensitive adhesive (Tafthren H5002, manufactured by Sumitomo Chemical Company, Limited) and 30 parts by weight of ARAKAWA CHEMICAL INDUSTRIES, Ltd. The product obtained by mixing the tackifier "ARKON P-125" was charged into the extruder, and then passed through the blown Molding method for melt extrusion. Thus, a laminate (2) for a non-aqueous battery (thickness: substrate layer / pressure-sensitive adhesive layer=30 μm / 8 μm) was produced.

[0150] Table 1 shows the evaluation results.

Embodiment 3

[0152] Block PP (PC480A, manufactured by SunAllomer Ltd., MFR=1.7 (230° C., 2.16 kgf)) as the substrate layer and 100 parts by weight of α-olefin-based pressure-sensitive adhesive (Tafthren H5002, manufactured by Sumitomo Chemical Company, Limited) and 15 parts by weight of ARAKAWA CHEMICAL INDUSTRIES, Ltd. The product obtained by mixing the tackifier "ARKON P-125" was charged into the extruder, and then passed through the blown Molding method for melt extrusion. Thus, a laminate ( 3 ) for a non-aqueous battery (thickness: substrate layer / pressure-sensitive adhesive layer=30 μm / 8 μm) was produced.

[0153] Table 1 shows the evaluation results.

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Abstract

Provided is a laminate for a nonaqueous battery having moderate adhesion to be used in a nonaqueous battery in which a nonaqueous electrolytic solution is sealed, the laminate for a nonaqueous battery being capable of improving the suitability of electrodes to be packed into a battery case without causing a reduction in battery output, being capable of preventing a short circuit between the electrodes caused by the penetration of a burr or the like present on an electrode plate through a separator, being capable of suppressing the reduction of the adhesion in the nonaqueous electrolytic solution, being capable of suppressing the deterioration of the nonaqueous electrolytic solution, and having such a cohesive strength that when the laminate is used in the form of a tape, a pressure-sensitive adhesive layer does not squeeze out of a base material layer. The laminate for a nonaqueous battery is formed of at least two layers, including: a base material layer (A); and a pressure-sensitive adhesive layer (B) in the stated order, in which: the base material layer (A) contains a polyolefin-based thermoplastic resin; and the pressure-sensitive adhesive layer (B) contains Alpha--olefin-based thermoplastic resin.

Description

technical field [0001] The present invention relates to a laminate for non-aqueous batteries that can be used, for example, in the production of non-aqueous batteries. Or a laminate for a non-aqueous battery in a similar position. Background technique [0002] A non-aqueous battery sealed with a non-aqueous electrolyte, such as a lithium ion battery, is very useful as a power source for mobile devices such as mobile phones or personal notebook computers. Nonaqueous batteries such as lithium ion batteries are also largely expected as batteries for electric vehicles because of their high capacity and light weight. It is expected that non-aqueous batteries such as lithium-ion batteries will require additional capacity increase and additional weight reduction in the future. [0003] Adhesive laminates are used in non-aqueous batteries sealed with non-aqueous electrolytes to improve the applicability of electrodes packaged into battery cases, and to prevent penetration of separ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J123/00C09J123/14H01M2/08H01M10/0525C09J7/22C09J7/38
CPCC09J7/0271C09J7/0246C09J2423/00C09J7/38C09J7/22C09J7/241Y02P70/50H01M2300/0025
Inventor 生岛伸祐中西多公岁武田公平新谷寿朗
Owner NITTO DENKO CORP
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