Soundproofing material and the use thereof

Details Soundproofing material and the use thereof Soundproofing material and the use thereof

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) D04H 1/46 (2006.01) D04H 1/48 (2006.01) E04B 1/84 (2006.01) G10K 11/00 (2006.01) G10K 11/162 (2006.01)

Patent

CA 2280772

The invention relates to soundproofing material for the sound frequency range 100 to 5,000 Hz, which is made of non-woven fabric containing thermoplastic fibers and characterized in that the non-woven fabric is permanently compressed in two stages by means of a mechanical bonding process and subsequent pressure and thermal treatment in order to achieve a specific resistance to flow of Rs = 800 - 1,400 Ns/m3.

L'invention concerne un matériau d'insonorisation consistant en non-tissés contenant des fibres thermoplastiques pour la gamme de fréquences acoustiques comprise entre 100 et 5.000 Hz. Ce matériau se caractérise en ce que le non-tissé est compacté de manière durable en deux temps par un procédé mécanique de consolidation, par traitement par compactage et par traitement thermique, jusqu'à obtention d'une résistance spécifique à l'écoulement de R¿s? = 800 - 1.400 Ns/m?3¿.

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