Lyocell fibers having enhanced cv properties

D - Textiles – Paper – 01 – F

Patent

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D01F 2/00 (2006.01) D01D 5/098 (2006.01) D01D 5/18 (2006.01)

Patent

CA 2406550

The invention is lyocell fiber characterized by a pebbled surface as seen at high magnification and having a variable cross section and diameter along and between fibers. The fiber is produced by centrifugal spinning, meltblowing or its spunbonding variation. The fibers can be made in the microdenier range with average weights as low as one denier or less. The fibers have inherently low gloss and can be formed into tight yarns for making fabrics of very soft hand. Alternatively, the fibers can be formed into self bonded nonwoven fabrics.

L'invention concerne une fibre Lyocell caractérisée par une surface granuleuse quand on la visualise sous un agrandissement important et possédant une section transversale et un diamètre variables le long des fibres et entre les fibres. On produit cette fibre par filage centrifuge, soufflage en fusion ou une de ces variations telles que liage à la filature. On peut obtenir ces fibres dans une plage de microdenier avec des poids moyens égaux ou inférieurs à 1 denier. Ces fibres présentent des caractéristiques de brillance limitée et peuvent être combinées en fils serrés afin de fabriquer des textiles à la tenue très douce. Dans un autre mode de réalisation, on peut fabriquer des non tissés se liant de façon autonome au moyen de ces fibres.

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