PP Battery Separator Roll by Dry Method (1000 m L × 65 mm W × 16 or 25 um T) can be used as an excellent Li ion battery separator for 21700 cylindrical Cells. 

Specifications

• Material: Polypropylene (PP)
• Thickness:                   16 or 25 um
• Width :                         65 mm
• Air Permeability:          350±100 s/100ml
• Porosity:                     42 ± 3 %
• Area Density:             13.2±1.0 g/m2
• Puncture Strength :    ≥450 G
• Tensile Strength:        ≥ 1400 Kgf/cm2 (MD);   ≥ 1300 Kgf/cm2 (TD)
• Thermal Shrinkage:    ≤1.5% (MD);   ≤0.5% (TD). Drying at 90℃ for 2 h. 
• Sold in roll only
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