An object of the invention is to provide a blow-molded foam which has homogeneous foamed cells in size, is light in weight, and is excellent in surface smoothness, and a process for producing the same. The invention is directed to a blow-molded foam 1 having a wall portion formed in such a manner that a thermoplastic resin containing a foaming agent mixed therewith is subjected to blow molding. Herein, the wall portion has a closed cell structure in which a plurality of foamed cells are contained. The wall portion has an expansion ratio of not less than 2.0 times. The wall portion has an outer face having a center-line average surface roughness Ra of less than 9.0 μm. The foamed cell has a cell diameter having a standard deviation of less than 40 μm in a thickness direction of the wall portion.


    Access

    Download


    Export, share and cite



    Title :

    BLOW-MOLDED FOAM


    Contributors:

    Publication date :

    2019-10-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



    Blow-molded foam

    ONODERA MASAAKI / SUMI TAKEHIKO / TAMADA TERUO et al. | European Patent Office | 2021

    Free access

    PROCESS FOR PRODUCING BLOW-MOLDED FOAM

    IGARASHI YU / OHNO YOSHINORI / ONODERA MASAAKI et al. | European Patent Office | 2021

    Free access

    BLOW-MOLDED FOAM AND PROCESS FOR PRODUCING THE SAME

    ONODERA MASAAKI / SUMI TAKEHIKO / TAMADA TERUO et al. | European Patent Office | 2021

    Free access

    Blow-molded foam and process for producing the same

    ONODERA MASAAKI / SUMI TAKEHIKO / TAMADA TERUO et al. | European Patent Office | 2019

    Free access

    BLOW-MOLDED FOAM AND PROCESS FOR PRODUCING THE SAME

    ONODERA MASAAKI / SUMI TAKEHIKO / TAMADA TERUO et al. | European Patent Office | 2021

    Free access