The present invention addresses the problem of providing fiber of 0.01-0.5 dtex which are used for a sound absorbing/insulating material and with which a fiber assembly with excellent sound absorbing/insulating effects can be obtained. The present invention also addresses the problem of providing a fiber-molded product for sound absorbing/insulating material in which said fiber is used, the product being suitable for a sound absorbing effect of sound less than or equal to 1,000 Hz. The problem can be solved by, in the fiber-molded product described below, providing fiber for sound absorbing/insulating material having a single-fiber fineness of 0.01-0.5 dtex in which the average value of the normal incidence sound absorption coefficient of the fiber-molded product for sound having a frequency of 200-1,000 Hz is 40% or more, and by using the fiber for sound absorbing/insulating material to mold the fiber-molded product for sound absorbing/insulating material. (Fiber-molded product) 70 mass% of fiber for sound absorbing/insulating material having a fiber length of 40 mm, and 30 mass% of polyester thermally fusible fibers having a single-fiber fineness of 2.2 dtex, a fiber length of 51 mm, and a melting point of 110 °C are mixed; heated at 170 °C for 20 minutes; and then cooled to form a fiber-molded product having a thickness of 30 mm and a basis weight of 1,200 g/m.


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    Title :

    FIBERS FOR SOUND ABSORBING/INSULATING MATERIAL, USE OF SAID FIBERS, MANUFACTURING METHOD FOR FIBERS FOR SOUND ABSORBING/INSULATING MATERIAL, AND FIBER-MOLDED PRODUCT FOR SOUND ABSORBING/INSULATING MATERIAL


    Additional title:

    FASERN FÜR SCHALLABSORBIERENDES/-ISOLIERENDES MATERIAL, VERWENDUNG DIESER FASERN, HERSTELLUNGSVERFAHREN FÜR FASERN FÜR SCHALLABSORBIERENDES/-ISOLIERENDES MATERIAL UND FASERGEFORMTES PRODUKT FÜR SCHALLABSORBIERENDES/-ISOLIERENDES MATERIAL
    FIBRE POUR MATÉRIAU D'ABSORPTION/ISOLATION ACOUSTIQUE, UTILISATION DE LADITE FIBRE, PROCÉDÉ DE FABRICATION DE FIBRE POUR MATÉRIAU D'ABSORPTION/ISOLATION ACOUSTIQUE, ET PRODUIT À MOULAGE DE FIBRES POUR MATÉRIAU D'ABSORPTION/ISOLATION ACOUSTIQUE


    Contributors:

    Publication date :

    2019-10-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / D01F Chemische Gesichtspunkte bei der Herstellung von produzierten Filamenten, Zwirnen, Fasern, Borsten oder Bändern , CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS