Production method of layered sound absorptive non-woven fabric

Details Production method of layered sound absorptive non-woven fabric Production method of layered sound absorptive non-woven fabric

D - Textiles, Paper

04

H

D04H 13/00 (2006.01) D04H 1/74 (2006.01) G10K 11/162 (2006.01) G10K 11/168 (2006.01)

Patent

CA 2674292

Production method of layered sound absorptive non-woven fabric (51), which comprises a resonance membrane which is positioned between two layers (21, 22) of the card fibrous web, while both layers (21, 22) of the card fibrous web are produced simultaneously in carding machine (2), from which each layer (21,22) of the card fibrous web is separately brought into the device (3) for production of nanofibres through electrostatic spinning, in which to the side of at least one layer (21) of the card fibrous web adjacent to the remaining layer (22) of the card fibrous web a layer (32) of nanofibres is applied, after then both layers (21, 22) of the card fibrous web near to one another until their adjacent sides sit down one on another, they are laid one on another in a selected quantity of layers and the layers join mutually.

L'invention concerne un procédé de production d'un tissu non tissé (51) absorbant le son, en couches, lequel tissu comprend une membrane de résonance qui est placée entre deux couches (21, 22) d'un voile de carde. Les deux couches (21, 22) du voile de carde sont produites simultanément sur une cardeuse (2), à partir de laquelle chaque couche (21, 22) du voile de carde est amenée séparément dans le dispositif (3) pour la production de nanofibres par filage électrostatique, dans lequel une couche (32) de nanofibres est appliquée au côté d'au moins une couche (21) du voile de carde, adjacent à la couche restante (22) du voile de carde, puis les deux couches (21, 22) du voile de carde s'approchent l'une de l'autre jusqu'à ce que leurs côtés adjacents reposent l'un sur l'autre, elles sont étendues l'une sur l'autre dans une quantité choisie des couches et les couches sont mutuellement réunies.

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