Provided is a nonwoven fabric and a laminated nonwoven fabric suitable as the skin material of a composite sound-absorbing material. The nonwoven fabric and laminated nonwoven fabric are easily formable, thin, and lightweight and excel in form stability, and can nevertheless be controlled within a given range of aeration after being formed into shape. A nonwoven fabric having a laminate structure in which at least one ultra-fine fiber layer (M) having an average fiber diameter of 0.3 to 7 µm (inclusive) and a basis weight of 1 g/m2to 40 g/m2(inclusive) and at least one continuous filament layer (S) having an average fiber diameter of 10 to 30 µm (inclusive) are integrated together by partial thermocompression bonding, the nonwoven fabric being characterized in that the continuous filament layer (S) is constituted by a filament containing 97.0 to 99.9 wt% (inclusive) polyester (component A) and 0.1 to 3.0 wt% (inclusive) thermoplastic resin having a glass transition temperature of 114 to 160 °C (component B), and/or a filament having a birefringence index of 0.04 to 0.07 (inclusive), and the bulk density of the ultra-fine fiber layer (M) is 0.35 g/cm3to 0.70 g/cm3(inclusive), as well as a laminated nonwoven fabric of the nonwoven fabric and a composite sound-absorbing material in which the nonwoven fabric or laminated nonwoven fabric and a continuous foaming resin foam or porous fiber material are laminated.
NONWOVEN FABRIC AND COMPOSITE SOUND-ABSORBING MATERIAL USING SAME AS SKIN MATERIAL
VLIESSTOFF UND SCHALLABSORBIERENDES VERBUNDMATERIAL MIT VERWENDUNG DAVON ALS HAUTMATERIAL
TISSU NON TISSÉ ET MATÉRIAU COMPOSITE ABSORBANT LES SONS L'UTILISANT COMME MATÉRIAU DE PEAU
2022-02-02
Patent
Electronic Resource
English
IPC: | 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 / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
NONWOVEN FABRIC FOR SOUND-ABSORBING MATERIAL AND SOUND-ABSORBING MATERIAL USING SAME
European Patent Office | 2021
|European Patent Office | 2022
|SOUND ABSORBING NONWOVEN FABRIC AND SOUND ABSORBING MATERIAL INCLUDING THE SAME
European Patent Office | 2018
|NONWOVEN FABRIC, SOUND-ABSORBING MATERIAL, AND OIL-HOLDING MATERIAL
European Patent Office | 2019
|SOUND ABSORBING SKIN MATERIAL AND SOUND ABSORBING MATERIAL UTILIZING THE SAME
European Patent Office | 2020
|