Patents Assigned to Mitsubishi Chemical Foam Plastic Corporation
  • Publication number: 20020048673
    Abstract: A foam layer can be formed at a temperature at which the surface quality of a surface layer is not deteriorated, and a molding technique that is excellent in adhesiveness of a foam layer and a surface layer or/and a base member is developed. For the purpose of obtaining a resin molding composite, the present invention is characterized by a polyolefin resin molding composite comprising a surface layer and a foam layer, or a surface layer, a foam layer, and a base member, wherein the foam layer comprises a foam layer produced by fusion bonding thermoplastic expanded resin particles one another by molding, where the thermoplastic expanded resin particles comprises a core that is made of a crystalline thermoplastic resin and is in an expanded state and a polyethylene resin coat covering the core, and the surface layer comprises a thermoplastic synthetic resin having a melting point of 5° C. or more higher than a melting point of polyethylene resin constituting the coat of the particles.
    Type: Application
    Filed: April 20, 2001
    Publication date: April 25, 2002
    Applicant: Mitsubishi Chemical Foam Plastic Corporation
    Inventors: Masaaki Yokoyama, Masahiro Tanaka
  • Publication number: 20020006507
    Abstract: A foam layer can be formed at a temperature at which the surface quality of a surface layer is not deteriorated, and a molding technique that is excellent in adhesiveness of a foam layer and a surface layer or/and a base member is developed. For the purpose of obtaining a polypropylene resin molding composite for automobile, the present invention is characterized by a polypropylene resin molding composite for automobile comprising a surface layer and a foam layer, or a surface layer, a foam layer, and a base member, wherein the surface layer comprises a surface layer of a polypropylene resin and a laminate of a cushioning material, where the cushioning material is a polypropylene resin expanded sheet, and the foam layer comprises thermoplastic resin expanded particles comprising a core that is made of a polypropylene resin and is in an expanded state and a polyethylene resin coat layer covering the core and is in a substantially non-expanded state.
    Type: Application
    Filed: May 30, 2001
    Publication date: January 17, 2002
    Applicant: Mitsubishi Chemical Foam Plastic Corporation and Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Masaaki Yokoyama, Masahiro Tanaka, Keiichi Honjo, Sukekuni Itoh, Yoshikazu Morinaga
  • Patent number: 6232358
    Abstract: To provide an expandable rubber-modified styrene resin composition that is enabled to obtain a molded foam having a high expansion ratio, an excellent impact resistance and pliability and satisfactory appearance. The expandable rubber-modified styrene resin composition comprises 85 to 99% by weight of a rubber-modified styrene resin containing a rubber particle of a diene polymer dispersed in a continuous phase of a styrene resin and 1 to 15% by weight of a volatile blowing agent whose boiling point is 80° C. or lower, wherein: the weight-average molecular weight of said continuous phase of styrene resin is 150,000 to 300,000; the graft ratio of the styrene resin to the diene polymer is 70 to 135%; and, the swelling index of the gel fraction of said diene polymer in toluene at 25° C. is 12 to 25.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: May 15, 2001
    Assignees: Mitsubishi Chemical Foam Plastic Corporation, Mitsubishi Chemical Corporation
    Inventors: Kenji Haraguchi, Taketoshi Kajihara