Method and device for producing a fiber web consisting of...

A - Human Necessities – 61 – F

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A61F 13/15 (2006.01)

Patent

CA 2309998

The invention relates to a method for producing a strip of absorbent, rollable cellulose fibre material (100) which is suitable for use in the hygiene sector. A fibre layer consisting of cellulose fibres is placed on a base layer (8) and pre-compressed to form a loose non-woven fabric which is introduced into a gap between a pair of calender rollers (6.1, 6.2) and which is used to produce a pattern of dotted or lined print areas (17) in which the fibres (1) are disposed in a random manner and are compressed against each other at a pressure ranging from 150 to 600 MPa, resulting in a non-solvent fusion of said fibres and the production of a strip of fibre material (100) with an imprinted pattern.

L'invention concerne un procédé de production d'une bande de matériau fibreux (100) à base de fibres de cellulose, absorbant et pouvant être roulé, qui s'utilise dans le domaine de l'hygiène. A cet effet, une couche de fibres de cellulose est appliquée sur un support (8) et est précompactée pour former un non-tissé de structure lâche, qui est introduit dans la fente située entre une paire de rouleaux de calandre (6.1, 6.2) et qui sert à créer un modèle de zones d'impression (17) sous forme de points ou de lignes, dans lesquelles les fibres (1) disposées de manière aléatoire sont comprimées les unes sur les autres, à une pression de l'ordre de 150 à 600 MPa, de manière à entraîner une fusion non solvante des fibres et à produire une bande de matériau fibreux (100) muni d'un modèle imprimé par gaufrage.

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