three-layer Co-extrusion Rotary Die-head film Characteristics:1.Die head is lauer type spiral mandrel, continuous 360, rotation.2 ... foreign and Home. The lines can be blown continuous 0.02-0.15mm in the thickness ... HDPE, LLDPE, MLLPE, by horizontal extrusion up blown. The film has good in solution, for instance holding temperature, ... 0*6.4*8.2 three-layer Co-extrusion Rotary Die-head film blowing machine