B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 55/30 (2006.01) A61M 25/00 (2006.01) B29C 47/00 (2006.01) B29C 55/22 (2006.01) B29D 23/22 (1990.01)
Patent
CA 2136291
A method for producing a thermoplastic polyurethane elastomer tube, comprising (a) extruding a thermoplastic polyurethane elastomer on the periphery of a heated mandrel under pressurization, (b) pulling out the mandrel to give a tube preform, and (c) hot drawing the obtained tube preform to produce a tube having a desired outer diameter, wherein the temperature of the said mandrel and an extrusion pressure on the elastomer are set in such a manner that they fall within the range where a range permitting hot drawing of the tube preform and a range free from the occurrence of bubbles on the surface of the tube preform overlap, which ranges being determined in advance on the basis of the temperature of the heated mandrel and the extrusion pressure on the elastomer as parameters. The method of the present invention can provide a TPU tube having a fine hot drawability while overcoming poor appearance due to the occurrence of bubbles or granular structure. In addition, TPU tubes having stable quality are continuously produced, thus increasing the yield thereof.
Fuchimoto Minoru
Kaide Tamotsu
Ozaki Hidenori
Fetherstonhaugh & Co.
Mitsubishi Cable Industries Ltd.
LandOfFree
Production of thermoplastic polyurethane elastomer tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Production of thermoplastic polyurethane elastomer tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of thermoplastic polyurethane elastomer tube will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1879548