three-layer Co-extrusion Rotary Die-head film Characteristics:1.Die head is lauer type spiral mandrel, continuous 360, rotation.2. Screen ... analogous lines in foreign and Home. The lines can be blown continuous 0.02-0.15mm in the thickness packaging films ... , from LDPE, HDPE, LLDPE, MLLPE, by horizontal extrusion up blown. The film has good in solution, for instance holding temperature, anti-humid ...