Method for manufacturing separation film and the separation film, and battery using same

Method for manufacturing separation film and the separation film, and battery using same

  • CN 105,144,429 A
  • Filed: 01/29/2014
  • Published: 12/09/2015
  • Est. Priority Date: 01/31/2013
  • Status: Active Application
First Claim
Patent Images

1. a polyalkene diaphragm, is wherein measured by TMA, and horizontal direction melting shrinkage (b) of described barrier film is 1.2 with the ratio (b/a) of machine direction melting shrinkage (a) of described barrier film or is less than 1.2.

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