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SEPARATOR FOR ALKALINE BATTERY, METHOD FOR PRODUCING THE SAME, AND BATTERY

  • US 20100310921A1
  • Filed: 12/07/2007
  • Published: 12/09/2010
  • Est. Priority Date: 12/20/2006
  • Status: Active Grant
First Claim
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1. A separator for alkaline batteries having a composite sheet comprising:

  • a polyvinyl alcohol nanofiber layer formed from a modified polyvinyl alcohol polymer and having a fiber diameter of 10 to 1000 nm, the nanofiber layer having a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH; and

    a base layer joined to the nanofiber layer, the base layer comprising a wet-type nonwoven material made of alkaline resistant fibers.

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