Dyed sheath/core fibers and methods of making same

D - Textiles – Paper – 01 – F

Patent

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Details

D01F 8/04 (2006.01) D01D 5/253 (2006.01) D01F 8/12 (2006.01) D06P 1/00 (2006.01)

Patent

CA 2383870

Bath-dyeable and bath-dyed filaments and methods have a core and a sheath which entirely surrounds the core. The core is formed of a core polymer which is susceptible to dyeing by a bath dye chemical, while the sheath is formed of a sheath polymer which is resistant to dyeing by the bath dye chemical. When the filament is brought into contact with a dye bath containing the dye chemical, the dye chemical in the dye bath will be physically transported through said sheath polymer to cause the core polymer to be dyed a color of the dye chemical, while the sheath polymer is substantially undyed thereby.

Des filaments pouvant être teints au bain et des filaments teints au bain ainsi que des méthodes connexes sont caractérisés par une âme et une gaine enrobant entièrement ce dernier. L'âme est faite d'un polymère pouvant être teint par un produit chimique dans un bain de teinture, tandis que la gaine est constituée d'un polymère résistant à la teinture par un produit chimique dans un bain de teinture. Lorsque l'on met les filaments en contact avec le bain de teinture contenant le produit chimique de teinture, ce dernier est physiquement transporté à travers le polymère de gaine pour aller teindre le polymère à l'intérieur (l'âme) de la couleur du produit chimique utilisé, tandis que le polymère de gaine demeurera pour ainsi dire exempt de teinture.

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