Thermal treatment of thermoplastic filaments for the preparation

Details Thermal treatment of thermoplastic filaments for the preparation Thermal treatment of thermoplastic filaments for the preparation

1994-02-22

1995-09-19

Edwards, N.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428373, 428374, 428400, 606228, 606231, 528354, D02G 300

Patent

active

054514614

ABSTRACT:
Thermoplastic monofilament sutures having improved flexibility and handling characteristics are obtained by a melt spinning process which includes the step of drawing the filaments in a heated zone maintained at a temperature above the melting temperature of the filament. The resulting monofilament sutures have a higher elongation and lower modulus than comparable monofilament sutures obtained without the heated drawing step, and are characterized by a crystalline structure which is more highly ordered in the core of the monofilament suture than in a surrounding annular area.

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