... roll 2.Winding formation 3.Blown film smoothness double-colour film blowing machine I plant the production of dualmode first ... advanced technology,rolling formation,and high production1. the host machine from a drive,twosided article Mitoya Barrel and a ... device that can effectively improve colorfilm production.2. Screw,cylinder used 38CrMoAl,after nitrogen treatment and precision machining formed, ...