... , LLDPE, MLLPE, Paby horzontal extrusion up blown. The film has good in sulation, for instance holding ... lauer type spiral mandrel, continuous 360, rotation.2.Screen pack changer Design is rational ... 3.Various functuonal parts may be installed to the lies, such as length counting device ... E- 3SJ Series Three layer Co-extruding PE Film Blowing Machine