ALKALINE DRY BATTERY COMPRISING GASKET, AND METHOD FOR PRODUCING SAME

The present invention provides a gasket for an alkaline battery which enables such a long lifetime that liquid leakage due to carbides of a polyamide resin raw material does not occur, surface wrinkles are hardly generated because of excellent fluidity during molding, and a thin wall portion serving...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HORII, Minoru, HACHIKEN, Hideyuki, MIYATA, Yoichi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The present invention provides a gasket for an alkaline battery which enables such a long lifetime that liquid leakage due to carbides of a polyamide resin raw material does not occur, surface wrinkles are hardly generated because of excellent fluidity during molding, and a thin wall portion serving as an explosion-proof safety valve can be normally ruptured until the lifetime of an alkaline battery expires, and a method for manufacturing the same. The gasket for an alkaline battery is formed by injection molding a resin composition, and has a thin wall portion in part. The resin composition is a polyamide 610 resin composition containing a polyamide 610 resin as a main component and a molding aid such as a release agent and a crystal nucleating agent, the polyamide 610 resin having a viscosity number in a range of 80 ml/g or more and 145 ml/g or less.