Sound absorbing material

Details Sound absorbing material Sound absorbing material

D - Textiles, Paper

04

H

D04H 3/16 (2006.01) B60R 13/08 (2006.01) G10K 11/162 (2006.01)

Patent

CA 2401442

The invention relates to a sound absorbing material, made from a microfilament non-woven fabric with a mass per unit surface area of 40 to 300 g/m2, whereby a non- woven fabric made from a melt-spun and drawn multi-component endless filament with a titre of 1.5 to 5 dtex is directly bonded to form a web and the multi-component endless filaments are optionally spread with and fixed to micro-endless filaments with a titre of 0.1 - 1.2 dtex, up to a degree of 80 % by means of a prefixing process.

L'invention concerne un matériau d'isolation phonique composé d'un non-tissé à microfilaments ayant un grammage de 40 à 300 g/m<2>. Ledit non-tissé est composé de filaments sans fin à plusieurs constituants, filés à chaud, étirés et directement disposés sous forme de non-tissé, lesdits filaments sans fin ayant un titre de 1,5 à 5 dtex. Après un pré-durcissement, ces filaments sans fin à plusieurs constituants sont éventuellement divisés et durcis à au moins 80 % pour former des microfilaments sans fin ayant un titre de 0,1 à 1,2.

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