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    Blow-molded foam
    3.
    发明授权
    Blow-molded foam 有权

    公开(公告)号：US11045982B2

    公开(公告)日：2021-06-29

    申请号：US16457846

    申请日：2019-06-28

    申请人： KYORAKU CO., LTD.

    发明人： Masaaki Onodera ,  Takehiko Sumi ,  Teruo Tamada ,  Yu Igarashi ,  Yoshinori Ohno

    IPC分类号： F16L9/14 ,  B29C44/02 ,  B29C44/34 ,  B29C49/00 ,  B29C49/04 ,  B60H1/00 ,  B29C49/48 ,  B29K23/00 ,  B29K105/04 ,  B29L23/00 ,  B29L31/30 ,  B29L22/00

    摘要： 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.

    Resin panel and molding method
    4.
    发明授权
    Resin panel and molding method 有权

    公开(公告)号：US10179441B2

    公开(公告)日：2019-01-15

    申请号：US15824164

    申请日：2017-11-28

    申请人： KYORAKU CO., LTD.

    发明人： Takehiko Sumi ,  Kiyotaka Kawai

    IPC分类号： B32B3/06 ,  B29C49/20 ,  B60R13/01 ,  B32B27/08 ,  B32B37/00 ,  B29C49/00 ,  B29C49/04 ,  B29D99/00 ,  B29C49/42

    摘要： A resin panel of which contact surfaces of a rear wall to be in contact with another member are made unlikely to deform while reducing the weight of the resin panel. The panel includes a rear wall having a plurality of contact surfaces to be in contact with another member, and a front wall opposing the rear wall with an interval therebetween, the resin panel including a plurality of ribs obtained by indenting parts of the rear wall toward the front wall and welding the parts to an inner surface of the front wall, wherein a wall thickness of the front wall is generally equal to or smaller than a wall thickness of the rear wall.