Layered sound absorptive non-woven fabric

Details Layered sound absorptive non-woven fabric Layered sound absorptive non-woven fabric

D - Textiles, Paper

04

H

D04H 13/00 (2006.01) D01D 5/00 (2006.01) E04B 1/74 (2006.01)

Patent

CA 2601813

The invention relates to the layered sound absorptive non-woven fabric containing the resonance membrane and at least one another layer (1, 3) of the fibrous material at which the resonance membrane is created by a layer (2) of nanofibres having diameter to 600 nanometers and of surface weight 0,1 to 5 g/m2, at the same time the resonance membrane together with at least one layer (1, 3) of fibrous material is formed by cross laying to the required thickness and surface weight.

L'invention concerne un non-tissé stratifié absorbant les sons qui contient une membrane de résonance et au moins une autre couche (1, 3) du matériau fibreux au niveau de laquelle la membrane de résonance est créée au moyen d'une couche (2) de nanofibres présentant un diamètre de 600 nanomètres et un poids en surface de 0,1 à 5 g/m2. Simultanément, la membrane de résonance est formée conjointement avec au moins une couche (1, 3) de matériau fibreux au moyen de la pose croisée selon l'épaisseur et le poids en surface requis.

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