To optimize a multilayer sound attenuation trim component for a vehicle, and in particularly, further optimize overall acoustic performance of the component.SOLUTION: A multilayer automotive trim component for sound attenuation comprises at least two fiber layers 10 and 30 and at least one air permeable intermediate film layer 20 between the at least two fiber layers. The multilayer automotive trim component for sound attenuation is characterized in that all layers have changed thickness, and at least in an area where thickness is between 4 to 12.5 mm or at least for an area where overall density is above 250 kg/m3, relationship between overall air flow resistance (AFRoverall) and overall density ρ satisfies a relationship of 1500<3800, where a unit of AFRoverall is Nsm-3 and a unit of ρ is kg/m3.SELECTED DRAWING: Figure 1

    【課題】自動車用多層消音トリム部品を最適化し、特に、この部品の全体的な音響性能を更に最適化する。【解決手段】消音のための自動車用多層トリム部品であって、少なくとも2つの繊維層10,30と、少なくとも2つの繊維層間の少なくとも1つの通気性中間フィルム層20とを備え、全ての層が変化した厚みを有しており、少なくとも厚みが4〜12.5mmである領域、又は少なくとも全体密度が250kg/m3を超える領域では、全気流抵抗(AFRoverall)と全体密度ρとの関係が、1500<AFRoverall−10ρ<3800(AFRoverallの単位はNsm−3、及びρの単位はkg/m3)であることを特徴とする、消音のための自動車用多層トリム部品。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    LIGHT WEIGHT ACOUSTIC TRIM COMPONENT


    Additional title:

    軽量音響トリム部品


    Contributors:

    Publication date :

    2020-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / 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



    Light weight acoustic trim part

    GUIGNER DELPHINE / SAVALIYA VIPUL / SEPPI MARCO | European Patent Office | 2019

    Free access

    LIGHT WEIGHT ACOUSTIC TRIM PART

    SEPPI MARCO / SAVALIYA VIPUL / GUIGNER DELPHINE | European Patent Office | 2017

    Free access

    LIGHT WEIGHT ACOUSTIC TRIM PART

    GUIGNER DELPHINE / SAVALIYA VIPUL / SEPPI MARCO | European Patent Office | 2016

    Free access

    LIGHT WEIGHT ACOUSTIC TRIM PART

    GUIGNER DELPHINE / SAVALIYA VIPUL / SEPPI MARCO | European Patent Office | 2017

    Free access

    LIGHT WEIGHT ACOUSTIC TRIM PART

    GUIGNER DELPHINE / SAVALIYA VIPUL / SEPPI MARCO | European Patent Office | 2017

    Free access