Process and apparatus for continuous production of length...

A - Human Necessities – 61 – F

Patent

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A61F 13/20 (2006.01)

Patent

CA 2219204

Process for the production of longitudinally extending pressed absorption bodies from an endless nonwoven web which is transported continuously in the direction of advance by pressing elements drivable in the direction of rotation and belonging to a pressing station and which is provided simultaneously with at least three longitudinal grooves arranged at equal angular spacings, whereupon the nonwoven web forming a pressed strand is subdivided into portions of specific length, characterized in that the nonwoven web (140) is driven in the conveying direction (x), by means of the pressing elements drivable in the direction of rotation, in a plane extending transversely relative to its longitudinal direction and simultaneously is pressed radially at least to the final cross section of a pressed strand (240) and, at the same time, is provided with longitudinal grooves (131).

L'invention concerne un procédé pour la production de corps absorbants pressés, s'étendant longitudinalement, à partir d'une bande de non-tissé sans fin qui est transportée en continu dans le sens d'avancement par des éléments de pression pouvant être entraînés dans le sens de rotation et appartenant à une station de pressage. Ladite bande de non-tissé est simultanément pourvue d'au moins trois rainures longitudinales disposées à intervalles angulaires réguliers. Ensuite, cette bande de non-tissé, qui forme un cordon pressé, est subdivisée en segments d'une longueur spécifique. Le procédé présenté se caractérise en ce que la bande de non-tissé (140) est entraînée dans la direction de transport (x) au moyen des éléments de pression pouvant être entraînés dans le sens de rotation, dans un plan s'étendant transversalement par rapport à son sens longitudinal et qu'elle est, simultanément, pressée radialement jusqu'à ce qu'elle présente au moins la section finale d'un cordon pressé (240) tout en étant pourvue de rayures longitudinales (131).

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