Method for controlling the profile of a non-woven lap and...

D - Textiles – Paper – 04 – H

Patent

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Details

D04H 3/02 (2006.01) D01G 25/00 (2006.01)

Patent

CA 2375492

The invention concerns an installation comprising a carding machine (1), and a distributor-layer (2) depositing the card (1) web (6) in a reciprocating motion on a delivery belt (8) moving transversely. The resulting intermediate lap (16) is conveyed to a needling loom (3) to produce a consolidated lap (24). A measuring station (28) scans the consolidated lap (24) profile and transmits it to a processing unit (32) where said profile is compared to a set reference input by a terminal (33). The variations in width cause a corresponding modification in the width deposited by the distributor-layer (2) by a link (36). The local surface weight variations cause a corresponding modification of the controls applied to the carding machine (1) capable of longitudinally profiling the web (6). The invention is useful for controlling an installation for obtaining a finished product.

L'installation comprend un carde (1), et un étaleur-nappeur (2) qui dépose en va-et-vient le voile (6) de la carde (1) sur un tapis de sortie (8) se déplaçant transversalement. La nappe intermédiaire (16) ainsi réalisée est conduite à une aiguilleteuse (3) pour obtenir une nappe consolidée (24). Un poste de mesure (28) relève le profil de la nappe consolidée (24) et la transmet à une unité de traitement (32) où ce profil est comparé à une consigne saisie au moyen d'un terminal (33). Les écarts de largeur provoquent une modification correspondante de la largeur de dépôt de l'étaleur-nappeur (2) par une liaison (36). Les écarts de poids surfacique local provoquent une modification correspondante des commandes appliquées à la carde (1) capable de profiler longitudinalement le voile (6). Utilisation pour permettre un pilotage de l'ensemble de l'installation en vue d'un produit fini déterminé.

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