Compressed absorbent web

Details Compressed absorbent web Compressed absorbent web

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) A61F 13/00 (2006.01) A61F 13/15 (2006.01) D04H 1/00 (2006.01)

Patent

CA 2491115

A novel absorbent structure for use in disposable absorbent articles includes a nonwoven fibrous web comprising at least about 5 wt-% of cellulosic materials, having a local density of greater than about 0.2 g/cm3, and a density relaxation of less than about 20 %. A novel process for forming a densified nonwoven web includes forming an open structure comprising at least about 5 wt-% of cellulosic materials; heating at least a portion of the open structure to a temperature of at least about 40 ~ C; compressing the heated open structure to form the densified nonwoven web to a local density of greater than about 0.2 g/cm3; and releasing the densified nonwoven web from compression.

L'invention concerne une nouvelle structure absorbante à utiliser dans des articles absorbants jetables et comprenant une bande fibreuse non tissée renfermant au moins environ 5 % en poids de matériaux cellulosiques, possédant une densité locale supérieure à environ 0,2 g/cm?3¿ et une relaxation de densité inférieure à environ 20 %. L'invention concerne également un nouveau procédé de formation d'une bande non tissée densifiée consistant à former une structure ouverte renfermant au moins environ 5 % en poids de matériaux cellulosiques; à chauffer au moins une partie de la structure ouverte à une température d'au moins environ 40· C; à comprimer la structure ouverte chauffée, de manière à former la bande non tissée densifiée à une densité locale supérieure à environ 0,2 g/cm?3¿; et à libérer la bande non tissée densifiée de la compression.

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