Propylene polymer fibers and yarns

Details Propylene polymer fibers and yarns Propylene polymer fibers and yarns

1999-11-23

2000-10-10

Dixon, Merrick

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421115, 26421117, 2642112, 26421121, 26421122, 2642111, 26421112, 156167, 8531, 81155, 8495, B29C 4778

Patent

active

061298794

ABSTRACT:
Process for treating a textile product comprising propylene polymer fibers comprises heating the textile product with the fibers in a substantially relaxed state at at least one temperature that is below the melting point of the propylene polymer but no more than about 20.degree. C. below such melting point. In one embodiment, the propylene polymer fibers subjected to such heating are characterized by a particular crystalline microstructure as determined by small angle X-ray diffraction. In another embodiment, the propylene polymer fibers subjected to such heating are melt spun, oriented fibers heated at at least one lower temperature.

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patent: 3424834 (1969-01-01), Chopra et al.
patent: 4159297 (1979-06-01), Mackie et al.
patent: 5587118 (1996-12-01), Mallonee
patent: 5597650 (1997-01-01), Mallonee
patent: 5620797 (1997-04-01), Mallonee
Genesis Carpet Certified By Amoco--Amoco Fabrics and Fibers Promotional Literature, 1988.
Forbes, Aug. 7, 1989, Science & Technology, Polypropylene Strikes Back.

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