... : preservation 5:heat sealing The 7-layer co-extrusion blown film line is mainly used for PA, EVA, EVOH high ... LDPE, LLDPE, mLLDPE to produce symmetrical and unsymmetrical barrier film, which is featured in high barrier, high sealing, high ... packaging, medical equipment, chemical products, daily necessities, etcThermoforming Film Using water-quenching cooling system A.Excellent Forming Property B ...