Conductive composite filaments

Details Conductive composite filaments Conductive composite filaments

D - Textiles, Paper

01

F

18/636.2

D01F 8/04 (2006.01) D01F 1/09 (2006.01) D02G 3/44 (2006.01)

Patent

CA 1107473

ABSTRACT OF THE DISCLOSURE A unitary, elongated, electrically conductive, composite, melt-spun filament which in transverse cross-section has from 2 to 8 electrically conductive segments whose inner ends are integral with each other at a common center located in the central interior portion of the filament and which radiate out- wardly from the center and extend to the perimeter of the filament with the outer ends of the electrically conductive segments being exposed on the outer surface of the filament. The spaces between the electrically conductive segments outwardly from center are filled with electrically non-conductive segments whereby the electrically conductive segments are isolated from each other except at the center and only the outer ends of the electrically conductive segments are exposed. The electrically conductive segments have an electrical resistance of less than 1 x 1013Q/cm and consist essentially of synthetic thermoplastic fiber-forming polymer containing uniformly dispersed therein from 3 to 40% by weight of electrically conductive carbon black. The electrically non-conductive segments consist essentially of synthetic thermo- plastic fiber-forming polymer, the electrically non-conductive segments being continuously bonded and having full adhesion to the electrically conductive segments along the entire length of the filament. The sum of the cross-sectional areas of the electrically conductive segments is less than 50% of the total cross-sectional area of the filament, and the sum of the exposed areas of the electrically conductive segments on the surface of the filament is less than 30% of the total surface area of the filament;

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