Cross-linked fiber in sheet form and method of making

Details Cross-linked fiber in sheet form and method of making Cross-linked fiber in sheet form and method of making

D - Textiles, Paper

21

H

D21H 11/18 (2006.01) D21H 11/20 (2006.01) D21H 17/39 (2006.01)

Patent

CA 2518145

The present invention is directed to cross-linked cellulosic fiber in the sheet from, obtainable by cross-linking a blend of mercerized pulp and conventional pulp. The method includes heating treated cellulosic fibers to promote intra-fiber cross-linking. The cross-linked fibers are characterized by an improved acquisition rate, resiliency, absorbency, and absorbency under load. Moreover, the inventive cross-linked fibers exhibit a reduction in centrifuge retention capacity, and have low knots, nits and fines contents. The cross-linked cellulosic fibers of the invention are useful in the acquisition layer and/or absorbent core of absorbent articles.

La présente invention concerne une fibre cellulosique réticulée dans le papier qu'on obtient en réticulant un mélange de pâte mercerisée et de pâte classique. Ce procédé consiste à chauffer des fibres cellulosiques traitées de façon à favoriser la réticulation à l'intérieur de la fibre. Ces fibres réticulées se caractérisent par une vitesse d'acquisition, une souplesse, un pouvoir absorbant et un pouvoir absorbant sous charge améliorés. Par ailleurs, ces fibres réticulées présentent une réduction dans leur capacité de rétention centrifuge et possèdent des contenus en noeuds, en tortillons et en fractions fines réduits. Les fibres cellulosiques réticulées de cette invention conviennent pour la couche d'acquisition et/ou pour le noyau absorbant d'articles absorbants.

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