With DSM’s gel technology process a wide range of film properties can be covered. We are able to adjust, for example, pore size characteristics, thickness and air permeability’s to your requirements. Typical ranges are summarized in underneath tables for high and low porosity product ranges.
Low porosity range High porosity range
Parameter Units Typical Range Typical Range
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Porosity (vol.%) 40 – 55 75 – 90
Thickness (μm) 8 – 35 10 – 120
Base weights (g/m²) 4 – 20 3 – 20
Permeability (Gurley number) (s/50 ml) 20 – 200 1 – 100
Pore size (mean flow) (μm) < 0.1 0.05 – 1.0
Tensile Strength:
@ MD and TD direction (MPa) 50 – 140 10 – 50
Elongation at break:
@ Machine direction (%) - 10 – 45
Dimensional changes @ 80°C (%) < 2 < 2
Puncture resistance (g) 200 – 500 -
Vapor transmision rate (g/m²/24h) - Up to 15,000
