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Polypropylene (PP) Lithium-Ion Battery Separator Roll – Dry Process, 16 µm or 25 µm (1000 m × 65 mm) for 21700 Cylindrical Cells

Polypropylene (PP) Lithium-Ion Battery Separator Roll – Dry Process, 16 µm or 25 µm (1000 m × 65 mm) for 21700 Cylindrical Cells

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High-quality microporous polypropylene (PP) lithium-ion battery separator roll manufactured using the dry process, specifically designed for 21700 cylindrical Li-ion cell assembly and laboratory-scale battery research.

This separator provides controlled porosity (42 ± 3%), stable air permeability (Gurley value 350 ± 100 s/100 ml), and strong mechanical strength. Available in 16 µm or 25 µm thickness, it is suitable for electrode winding processes and cylindrical cell prototyping.

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Specification
Material Polypropylene (PP)
Manufacturing Process Dry Process
Thickness 16 µm or 25 µm
Roll Length 1000 m
Width 65 mm
Air Permeability (Gurley) 350 ± 100 s/100 ml
Porosity 42 ± 3 %
Area Density 13.2 ± 1.0 g/m²
Puncture Strength ≥ 450 g
Tensile Strength (MD) ≥ 1400 kgf/cm²
Tensile Strength (TD) ≥ 1300 kgf/cm²
Thermal Shrinkage (MD) ≤ 1.5 % (90°C, 2 h)
Thermal Shrinkage (TD) ≤ 0.5 % (90°C, 2 h)
Supply Format Roll only

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