... property. 2)Its surface is neat and smooth 1)Acrylic dust bag is produced by needling craft, made of acrylic fiber of ... heat setting and singeing, so it cannot be stemmed by dust easily.3)possesses large porosity, good permeability and anti-chemical ... resistanceexcellentabrasion resistancegoodFinish treatmentheat setting, singeing,calendering or Teflon coating Acrylic dust bag