Polymer filaments having profiled cross-section

Details Polymer filaments having profiled cross-section Polymer filaments having profiled cross-section

2005-02-15

2005-02-15

Edwards, N. (Department: 1774)

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

C428S398000, C428S376000

Reexamination Certificate

active

06855425

ABSTRACT:
The invention provides a profiled polymer filament having an open hollow cross-sectional shape normal to the longitudinal axis of the filament, wherein the cross-section is dimensioned to prevent the filament from interlocking with a second filament of the same cross-section. The invention also provides methods of manufacture of such filaments by melt spinning a polyamide, and spinnerets suitable for use in melt spinning such filaments.

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