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    Method for manufacturing polyethylene resin foam molded article
    1.
    发明授权
    Method for manufacturing polyethylene resin foam molded article 有权

    公开(公告)号：US10100166B2

    公开(公告)日：2018-10-16

    申请号：US15690122

    申请日：2017-08-29

    Applicant: Kaneka Corporation

    Inventor： Yuki Hayase

    IPC: C08J9/24 ,  C08K3/34 ,  C08K5/103 ,  C08L23/06 ,  C08J9/00 ,  C08J9/12 ,  B29C44/00 ,  B29C44/08 ,  C08J9/18 ,  C08J9/232

    Abstract: A method of producing a polyethylene resin expanded molded product includes filling a mold with expanded polyethylene resin particles, wherein an internal pressure of 0.12 to 0.16 MPa is applied to the expanded polyethylene resin particles in the mold, and forming the polyethylene resin expanded molded product by heating the expanded polyethylene resin particles and fusing the expanded polyethylene resin particles. The expanded polyethylene resin particles includes 100 parts by weight of a polyethylene resin, 0.08 to 0.25 parts by weight of a cell nucleating agent, 0.3 to 0.8 parts by weight of a polyhydric alcohol fatty acid ester, and 0.01 to 10 parts by weight of a hydrophilic compound, each of the expanded polyethylene resin particles having a weight of 2.5 to 3.5 mg. The polyethylene resin expanded molded product has a density of 0.017 to 0.021 g/cm3 and a thickness of 10 to 40 mm.

    PROCESS FOR PRODUCING EXPANDED POLYETHYLENE-BASED RESIN BEADS AND PROCESS FOR PRODUCING POLYETHYLENE-BASED MOLDED RESIN OBJECT BY IN-MOLD FOAMING
    3.
    发明申请
    PROCESS FOR PRODUCING EXPANDED POLYETHYLENE-BASED RESIN BEADS AND PROCESS FOR PRODUCING POLYETHYLENE-BASED MOLDED RESIN OBJECT BY IN-MOLD FOAMING 审中-公开

    公开(公告)号：US20190030768A1

    公开(公告)日：2019-01-31

    申请号：US16144766

    申请日：2018-09-27

    Applicant: KANEKA CORPORATION

    Inventor： Yuki Hayase ,  Toru Yoshida

    IPC: B29C44/34 ,  C08J9/18 ,  C08J9/232 ,  C08J3/24

    Abstract: A method for producing polyethylene-based resin foamed particles includes a first-step foaming process. The first-step foaming process includes: producing an aqueous dispersion by dispersing polyethylene-based resin particles in an aqueous dispersing medium in a sealed vessel, adding a carbon dioxide-containing foaming agent to the aqueous dispersion in the sealed vessel, heating and pressurizing the aqueous dispersion in the sealed vessel, and releasing the aqueous dispersion in the sealed vessel to a pressure region where a pressure is lower than an internal pressure of the sealed vessel. The foaming ratio in the first-step foaming process is 10 to 18 times. The polyethylene-based resin particles have a polyethylene-based base resin and a melting point of 105 to 125° C., a tan δ of 0.3 to 0.7, and a complex viscosity of 5000 to 20000 Pa·s.

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