... , 2,strong air permeability, 3,high friction 4,deformation-resistant Polyester Needle Traction Belt 1,long working life 2,Material:PET 3 ... is the special belt of stacking of crossing-bridge.Dacron Needle Traction BeltTypeDL-6Material100%PETThicknessAbout 10mmWeight2.5kg/square meterWidth900~3000mmHeat resistanceDynamic ...