Polyester Filter Mesh polyester spiral belt is also called Polyester Spiral Mesh,Polyester Mesh Belt ? Mateiral:polyester monofilament ? features:This kind of Polyester mesh is made of Plyester Spiral Filter Fabric? ,which is filled with stuff to reduce the air permeability and to instensive the opening,hen to reduce the material loos from the mesh opening. ? Uses:polyester spiral belt is mainly used in sludge desiccation,paper pulp washing ,coal washing ,chemicals,dehydration of wine bran,vinegar bran dehydration and other industies. Polyester? spiral mesh is better used in the high ventilation part of the drying part of paper-making machine. ? Specifications for one kind of our Polyester Sipral mesh: ? weaving series and typing:3868B thread diameter ??? warp:0.7mm ??? weft:0.9mm thickness:2.5mm weight:1.4KG/square meter air permeability:20500+-500 cubic meter per square meter per hou