A nonwoven fabric for sound absorbing application according to the present invention includes a plurality of drawn filaments arranged and oriented in one direction, and the mode value of the diameter distribution of the plurality of drawn filaments is 1 to 4 µm. When laminated on a porous sound absorbing material, the nonwoven fabric for sound absorbing application according to the present invention constitutes a sound absorbing material with the porous sound absorbing material, and the resultant laminated sound absorbing material has improved sound absorption performance in the frequency band of 1000 to 10000 Hz as compared to the porous sound absorbing material alone.
NONWOVEN FABRIC FOR SOUND-ABSORBING MATERIAL AND SOUND-ABSORBING MATERIAL USING SAME
VLIESSTOFF FÜR EIN SCHALLABSORBIERENDES MATERIAL UND SCHALLABSORBIERENDES MATERIAL DAMIT
TISSU NON TISSÉ POUR MATÉRIAU INSONORISANT ET MATÉRIAU INSONORISANT UTILISANT LEDIT TISSU
2021-07-14
Patent
Electronic Resource
English
IPC: | D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
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