Abstract: The extrusion head for plastics extruders includes a die head, which is disposed axially in the extrusion direction downstream from a jaw plate. The die head is divided in an at least approximately radial direction into a main part and an orifice part and the cones of the orifice part can be fixed independently of one another at the respectively adjacent cones of the main part and exchanged for other cones in a rapid operation.

Abstract: A distributor head (1) for forming a tubular profile from one or more streams of thermoplastic material, which distributor head comprises at least an inlet orifice (10, 12, 14) for a stream of plastics material, which can be connected to an extruder, and an outlet orifice (20, 22, 24) of annular cross section. The distributor head comprises at least one flow channel system (30, 32, 34) which is connected to an inlet orifice of the distributor head by means of an inlet channel (36, 38, 40), which inlet channel, in a number of stages of branchings and intermediate flow channels (60, 62, 64), branches into a number of outlet channels (66, 68, 70) terminating on a periphery around the center line of the outlet orifice, which outlet channels open into the outlet orifice.