polyester needle felt
thickness 1.8mm
air permeability 200-350
tensile strength warp ≥1100 weft ≥1300
tensile elongation %warp <35 weft <40
temperature continue 130 instant 150
anti-acid medial
anti-alkali middle
anti-anrasion excellent
hydroly sisstability middle
finishing treatment singeing,calendering
thickness 1.8mm
air permeability 200-350
tensile strength warp ≥1100 weft ≥1300
tensile elongation %warp <35 weft <40
temperature continue 130 instant 150
anti-acid medial
anti-alkali middle
anti-anrasion excellent
hydroly sisstability middle
finishing treatment singeing,calendering