lithium ion battery separator

Polypropylene/PP separator for lithium ion battery SPECIFICATIONS Length:400m,  width:50mm, Thicness:25umMode:TOB-PP-25 Name  PP(polypropylene) Separator Item Unit   Type TOB-PP-25 Thickness um 25 Air Permeability sec/100ml 520 Factor of porosity % 42   Tensile Strength  MD Kg/cm2 >1200 TD Kg/cm2 >130 Puncture Strength g >450 Thermal contraction (90℃ 1h) MD % ≤2.5 TD % ≤0.5  Thermal contraction  (105℃ 1h) MD % ≤4 TD % ≤1  Obturator temperature  ℃ 153   PACKAGE  Email : tob.amy@tobmachine.com  Skype : amywangbest86  Whatsapp/Phone number : +86 181 2071 5609