Extrusion system

B - Operations – Transporting – 29 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

18/758

B29C 47/00 (2006.01) B29C 47/34 (2006.01) B29C 47/88 (2006.01) B29C 47/90 (2006.01) B29C 59/04 (2006.01)

Patent

CA 1285114

ABSTRACT Apparatus for extruding a pliable, thin-walled tube comprising an extrusion and shaping die assembly comprising an annular die body, a mandrel supported within the annular die body, a mandrel extension mounted on the mandrel adjacent the die outlet, the mandrel extension having a diameter less than the diameter of the mandrel, a sizing disk supported by the mandrel extension, and means to supply molten polymeric material to the die assembly under pressure to force the material through an annular extrusion flow channel around the mandrel and out the die outlet thereby forming a moving tube of the material, the mandrel extension extending outwardly from the die in the direction in which the tube isextruded, the annular die body having at least one fluid passageway to channel fluid introduced under pressure into the annular die body axially through the mandrel and outwardly from the axis of the mandrel extension to form an air pillow adapted to cool and support the tube around and spaced from the mandrel extension, and the sizing disk being adapted to restrict escape of the fluid and to define a chamber in cooperation with the tube of the molten polymeric material for confining the air pillow around the mandrel extension. This apparatus may be employed in a process to prepare a pliable, thin-walled tube.

525229

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Extrusion system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extrusion system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1325497

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.