... extruder,film blown machine,film machineUse: High polymer materials such as rubber, plastic and fiber will have ... when heated . The performance that high polymer materials will shrink by heating is opposite to that ... the advantage of its transpatency,multiple variety,abound raw materials,ease of producing and using ,The table 1 ... variety in table 1,,PA,PA,PET,PVCD, EVA etc also can be made into the heat ...