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Highly durable porous PVDF film, method of producing the same and washing method and filtration method using the same

  • US 8,931,647 B2
  • Filed: 04/16/2007
  • Issued: 01/13/2015
  • Est. Priority Date: 04/19/2006
  • Status: Active Grant
First Claim
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1. A porous film comprising a polymer component having a polyvinylidene fluoride (PVDF), resin as a main component thereof,wherein the degree of crystallization of the PVDF resin in the film is 50% or more but not more than 90%, andthe product of the degree of crystallization of the PVDF resin in the film and a specific surface area of the film is 300 (%·

  • m2/g) or more but not more than 2000 (%·

    m2/g).

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