Sheath-core composite conductive fiber

D - Textiles – Paper – 01 – F

Patent

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Details

D01F 8/00 (2006.01) D01D 5/34 (2006.01) D01F 1/09 (2006.01) D01F 8/12 (2006.01) D01F 8/14 (2006.01)

Patent

CA 2385034

The present invention is a sheath-core composite conductive fiber comprising a sheath component made of a fiber-forming polymer containing conductive carbon black, characterized in that, with respect to an inscribed circle of a core component and an inscribed circle of a sheath component in a cross section of the fiber, a radius (R) of the inscribed circle of the sheath component and a distance (r) between the centers of two inscribed circles satisfy a specific relationship, and a sheath-core composite conductive fiber comprising: a core component made of a polyester containing ethylene terephthalate as a main component, and a sheath component made of a mixture of a copolyester wherein ethylene terephthalate accounts for 10 to 90 mol% of constituent units thereof and carbon black. The conductive fiber of the present invention can be used alone or in combination with other fibers in various applications, e.g., special working clothes such as dust-free clothes and interiors such as carpets.

L'invention concerne une fibre électroconductrice à composite coeur-gaine présentant un constituant gaine en polymère formant une fibre contenant du noir de carbone conducteur, caractérisé en ce que, par rapport aux cercles inscrits des constituants de coeur et de gaine, le rayon du cercle inscrit (R) du constituant de gaine et la distance (r) entre les centres des deux cercles précités satisfont une relation spécifique; une fibre électroconductrice à composite coeur-gaine caractérisé en ce que le constituant de coeur contient un polyester présentant des unités d'éthylène téréphthalate en tant qu'unité constitutive principale et le constituant de gaine contient un mélange de noir de carbone et d'un copolyester dans lequel l'éthylène téréphthalate représente 10 à 90 mole pour cent de ses unités constitutives. La fibre conductive peut être utilisée de façon appropriée, seule ou en combinaison avec une autre fibre, dans diverses applications, par exemple, pour des vêtements de travail spéciaux tels que des vêtements antipoussière et des articles d'intérieur tels qu'une moquette.

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