... 2.low price and good quality 3.economical model Three Layer Co-extrusion Film Blowing Machine Use:This film blowing machine is applicable for the materials such as LDPE, LLDPE ... manufacture composite film basic material, liquid film, contractive film, protective film, cable film, macromolecule adhesive film, multifunctional industrial film products.Characteristics: 1.Die head is layer type spiral ...