Patent ID: 7163388
Filing Date: 2007-01-16
Classification: B29C,B29K,B29L,Y10T

Abstract:
1. An extrusion head for continuous extrusion of molten polymer in a predetermined cross-sectional shape, the molten polymer being supplied from a source, the cross-sectional shape including at least one lumen, the head comprising: a) an extrusion tip having an outer surface; b) an extrusion die surrounding said tip and having an inner surface cooperating with said tip surface to define a flow channel therebetween, said flow channel defining a direction of flow of said molten polymer in said head; c) at least one lumen pipe assembly extending through a wall of said die into said flow channel, said pipe assembly having a first portion extending transversely of said flow direction and a second portion extending parallel to said flow direction, said first and second pipe portions being joined at a right angle; d) means for adjusting the radial position of said lumen pipe assembly in said flow channel, wherein said means for adjusting includes a pin vise mounted in said wall of said die.