Wendelverteiler, Blaskopf, Blasfolienanlage, Verfahren zum Herstellen einer Blasfolie sowie Blasfolie

摘要

Film extrusion lines use spiral distributors for producing a melt that is as homogeneous as possible during operation. The spiral distributors are mostly present as cylindrical or conical axial spiral distributors or as radial spiral distributors. The spiral channels run on a spiral support in a multiple-spiral arrangement. According to the invention, a spiral is provided in a defined manner on a counter-body that lies opposite the spiral support, specifically to produce a round cross-sectional shape or a continuous course of the spiral in an initial section but ending in an overflow section. According to the invention, a round cross-section is also already provided on the spiral carrier side.