Thermal treatment of thermoplastic filaments

Details Thermal treatment of thermoplastic filaments Thermal treatment of thermoplastic filaments

D - Textiles, Paper

01

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128/123, 18/614

D01D 10/02 (2006.01) A61L 17/00 (2006.01) A61L 17/04 (2006.01) A61L 17/10 (2006.01) A61L 17/12 (2006.01) A61L 17/14 (2006.01) B29C 55/00 (2006.01) D01D 5/16 (2006.01)

Patent

CA 1337498

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 filaments have a higher elongation and lower modulus than comparable filament obtained without the heated drawing step, and are characterized by a crystalline structure which is more highly ordered in the core of the filament than in a surrounding annular area.

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