1. HDPE, LDPE, LLDPE film blowing machine. 2. Double-head Feature: This machine is used for blowing Low-density polyethylene (LDPE) and high-density polyethylene ( ... 1) The machine adopts single screw to extrude the material, two die heads to blow the film.2) The screw stem and cylinder ... The die head is plated with hard chrome, of screw mandrel type structure with even and smooth discharging, the ...