Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1978-02-08
1980-07-08
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
128348, 264236, B29F 310
Patent
active
042117410
ABSTRACT:
A coextruded multiple layered medical-surgical tubing employs a first layer of polyvinyl chloride and a second layer of polyurethane laminated as an integral multi-layer tube. The polyurethane creates a non-migrating medical-surgical tubing. The polyvinyl chloride and polyurethane are coextruded with the polyurethane heated at a curing temperature of 400.degree. to 450.degree. F. and the polyvinyl heated to a temperature of 300.degree. F. and rapidly cooled. The coextruded tubing then may pass through a cooling unit which rapidly reduces the temperature of the coextruded polyvinyl-polyurethane tubing medical-surgical tubing and positively prevents destruction of the polyvinyl layer as a result of the high temperature of the polyurethane. The relative quantity of thickness of the inexpensive plastic and the polyurethane layers are selected to provide any desired characteristic; such as hardness and flexibility, coupler adaptability and the like.
REFERENCES:
patent: 3277225 (1966-10-01), Heard
patent: 3404432 (1968-10-01), White et al.
patent: 3411981 (1968-11-01), Thomas
patent: 3538207 (1970-11-01), Toole
patent: 3538209 (1970-11-01), Hegler
patent: 3561493 (1965-04-01), Maillard et al.
patent: 3880691 (1975-04-01), Pannenbecker et al.
Sunlite Plastics, Inc.
Woo Jay H.
LandOfFree
Extrusion process for laminated medical-surgical tubing 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 process for laminated medical-surgical tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion process for laminated medical-surgical tubing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-560308