A process for producing a blow-molded foam is described. The process includes kneading (S1) a polyolefin-based resin containing a foaming agent mixed therewith in an extruder, and extruding (S3) a parison (32) between split mold blocks from a die slit (21) at an extrusion rate of 700 kg/h or more. Further, a blow-molded foam is described. The blow-molded foam has a wall formed in such a manner that a thermoplastic polyolefin-based resin containing a foaming agent mixed therewith is subjected to blow molding, wherein the wall has a closed cell structure including a plurality of foamed cells, the foamed cells have an average cell diameter of less than 300 µm in the thickness direction of the wall, an outer face of the wall has a center-line average surface roughness Ra of less than 9.0 µm, and the foamed cells have a cell diameter having a standard deviation of less than 40 µm in the thickness direction of the wall.


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    Title :

    PROCESS FOR PRODUCING BLOW-MOLDED FOAM


    Additional title:

    VERFAHREN ZUR HERSTELLUNG VON BLASGEFORMTER SCHAUMSTOFF
    PROCÉDÉ DE PRODUCTION DE MOUSSE MOULÉE PAR SOUFFLAGE


    Contributors:

    Publication date :

    2021-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29K Index-Schema für Formmassen oder Materialien für Verstärkungen, Füllstoffe oder vorgeformte Teile, z.B. Einlagen in Verbindung mit den Unterklassen B29B, B29C oder B29D , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / 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



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