Extrusion head for co-extruding at least two plastic materials

摘要

For feeding the plastics materials (M1, M2) there are provided two feed channels (KA1, KA2) which open out into a common outlet die (AD) and into a slit-shaped homogenisation zone (SP11, SP21) which serves to homogenise the stream of material. The homogenisation zone (SP11) for the material (HM1) which is on the inside after extrusion extends essentially in the axial direction, whereas the homogenisation zone (SP21) for the material (HM2) which is on the outside after extrusion extends essentially in the radial direction.