Patent ID: 6793475
Filing Date: 2004-09-21
Classification: B29C

Abstract:
Coextrusion nozzle arrangement, comprisinga distributor portion adjacent an extruder for delivery of an extrudate, a nozzle portion for the extrusion of the extrudate, wherein the extrudate comprises at least one plastic, and wherein the nozzle portion is adapted for at least two extrudate flows, a mounting and connecting base between the distributor portion and the nozzle portion, whereby the mounting and connecting base is shaped and constructed for holding the nozzle portion in a predetermined installation arrangement which is maintained relative to the distributor portion during the dismantling of the mounting and connecting base together with the nozzle portion, wherein the mounting and connecting base further comprises connecting channels for connecting the channels in the distributor portion with the channels in the nozzle portion, and sealing means are provided on at least one abutment location between the mounting and connecting base and the distributor portion, such that the flow channels of the mounting and connecting base and the flow channels of the distributor portion are sealed to the ambient, wherein the sealing means automatically develops larger sealing force or action upon the application of an increased pressure load.