... 2.Winding formation 3.Blown film smoothness double-colour film blowing machine set I plant the production of dualmode first prize is ... ,advanced technology,rolling formation,and high production1. the host machine from a drive,twosided article Mitoya Barrel and a die ... structure mandral spiral type,melt extrusion material uniform,thin-film-blowing finish well, air-cooled structure of the maze-type ...