Cushions for dynamic impact applications include anisotropic cellular polymers made in an extrusion, expanded bead or reactive foaming process. The anisotropic behavior represented by CE/CT, CV/CT and CH/CT, wherein CE, CV and CH represent the compressive strength of the cellular polymer in each of three orthogonal directions E, V and H, respectively, as measured by compressing a 25-50 mm thick sample of the cellular polymer at a strain rate of 0.08 s−1 to 25% strain, CT represents the sum of CE, CV and CH, and at least one of CE/CT, CV/CT and CH/CT has a value of at least 0.40, up to about 0.80. The cellular polymer also preferably has density of 1.75 to 2.35 pounds/cubic foot and a compressive stress in the direction of maximum compressive strength of 290-600 kPa at 25% strain when used for headliner countermeasure applications. The cushions are useful in automotive applications such as automotive headliners, door panels, knee bolsters, pillars, headrests, seat backs, load floors or instrument panels.


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    Title :

    IMPACT-ABSORBING MEMBERS FOR DYNAMIC IMPACT APPLICATIONS


    Additional title:

    STOSSDÄMPFUNGSELEMENTE FÜR DYNAMISCHE AUFPRALLANWENDUNGEN
    ELEMENTS AMORTISSANT LES CHOCS POUR APPLICATIONS D'IMPACTS DYNAMIQUES


    Contributors:

    Publication date :

    2015-08-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16F SPRINGS , Federn / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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