1. basis weight:40±5g/m2
2. thickness:0.15±0.01mm
3. air permeability(P=127Pa)100~150L/m2·S:
4. Pore size Max.:40-50μm
5. Bursting strength:≥80kPa
6. Dont melt while heating under 180, and its shape wont be changed
7. Can be mixed with oil but not water
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