Creped towel and tissue incorporating high yield fiber

Details Creped towel and tissue incorporating high yield fiber Creped towel and tissue incorporating high yield fiber

D - Textiles, Paper

21

H

D21H 27/02 (2006.01) B31F 1/07 (2006.01) B31F 1/12 (2006.01) B31F 1/14 (2006.01) D21F 11/00 (2006.01) D21H 15/02 (2006.01) D21H 25/00 (2006.01)

Patent

CA 2426383

An absorbent sheet of cellulosic fiber typically includes at least about 15% by weight of high coarseness, generally tubular and lignin-rich cellulosic fiber based on the combined weight of cellulosic fiber in the sheet. Lignin-rich high coarseness, generally tubular fiber employed may be characterized by a coarseness of at least about 20 mg/100 m and an average length of 2 mm. The sheet is prepared by way of a a process including applying a dewatered web to a heated rotating cylinder and creping the web from the heated cylinder with an undulatory creping blade. Preferred lignin-rich, high coarseness, generally tubular fibers include thermo and chemi mechanical pulps. A particularly preferred embodiment is a sheet including at least about 15% BCTMP.

Une feuille absorbante de fibre cellulosique comprend typiquement au moins 15 % par poids de fibre cellulosique très rude, généralement tubulaire et riche en lignine, sur la base de masse combinée de fibre cellulosique dans la feuille. La fibre très rude, généralement tubulaire et riche en lignine utilisée est caractérisée par une rudesse d'au moins 20 mg/100 m et une longueur moyenne de 2 mm. La préparation de la feuille comprend l'application d'un voile déshydraté ;a un cylindre rotatif chauffé, et la montée en crêpe du voile à partir du cylindre chauffé avec une lame à crêper. Les fibres préférées très rudes, généralement tubulaires et riches en lignine comprennent des pâtes thermomécaniques et chimicomécaniques. Une version qui a la préférence particulière consiste en une feuille comprenant au moins 15 % de pâte chimico- thermomécanique blanchie.

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