Title:
IN-LINE ANNEALING OF SUTURES
Document Type and Number:
Japanese Patent JP3806967
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To remove rack anneal from polypropylene sutures.
SOLUTION: The objective process for producing a polypropylene suture comprises the steps of (a) extruding melted polypropylene resin through an orifice and rapidly quenching the melted polypropylene resin to produce a filament; (b) drawing the filament in the range of from about 5X to about 7.5X to produce a singly drawn filament; (c) drawing the singly drawn filament in the range of from about 1X to about 2.5X in a second heated zone being maintained at a temperature in the range of from about 30°C to about 160°C to form a doubly drawn filament; (d) shrinking the doubly drawn filament in the range of from about 0.75% to about 0.95%, in a second heated zone being maintained at a temperature in the range of from about 100°C to about 180°C.
Inventors:
David The Ray Leonard
Application Number:
JP4682696A
Publication Date:
August 09, 2006
Filing Date:
February 09, 1996
Export Citation:
Assignee:
ETHICON INCORPORATED
International Classes:
A61L17/00; A61L17/04; D02J1/22; A61L17/14; D01D5/12; D01F6/06; D02G3/44; (IPC1-7): D01D5/12; A61L17/00; D01F6/06; D02G3/44
Domestic Patent References:
| JP3206143A |
Foreign References:
| US4911165 | ||||
| EP0526759A1 |
Attorney, Agent or Firm:
Heikichi Odashima