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214 条记录 (耗时 0.027 秒)

    METHOD FOR PRODUCING POLYAMIDE-BASED RESIN MULTI-STAGE-EXPANDED BEADS
    43.
    发明公开
    METHOD FOR PRODUCING POLYAMIDE-BASED RESIN MULTI-STAGE-EXPANDED BEADS 审中-公开

    公开(公告)号：US20230407035A1

    公开(公告)日：2023-12-21

    申请号：US18030561

    申请日：2021-10-13

    申请人： JSP CORPORATION

    发明人： Tetsu OTSUKA

    IPC分类号： C08J9/18 ,  C08J9/12 ,  C08J9/228

    CPC分类号： C08J9/18 ,  C08J9/228 ,  C08J9/12

    摘要： A method for producing polyamide-based resin multi-stage expanded beads includes an internal pressure applying step of placing polyamide-based resin expanded beads in a pressure-resistant container, impregnating the polyamide-based resin expanded beads with a physical blowing agent in the pressure-resistant container to apply internal pressure higher than atmospheric pressure; and a heating and foaming step of heating and expanding the polyamide-based resin expanded beads to which internal pressure is applied obtained in the internal pressure applying step to obtain polyamide-based resin multi-stage expanded beads having apparent density lower than that of polyamide-based resin expanded beads used in the internal pressure applying step, in the internal pressure applying step, polyamide-based resin expanded beads in a wet state having a water content of 1% or more being impregnated with the physical blowing agent at a temperature higher than change-point temperature of storage modulus of the polyamide-based resin expanded beads in a wet state.

    POLYAMIDE-BASED RESIN EXPANDED BEADS, MOLDED ARTICLE OF POLYAMIDE-BASED RESIN EXPANDED BEADS, AND METHOD FOR PRODUCING POLYAMIDE-BASED RESIN EXPANDED BEADS
    46.
    发明申请
    POLYAMIDE-BASED RESIN EXPANDED BEADS, MOLDED ARTICLE OF POLYAMIDE-BASED RESIN EXPANDED BEADS, AND METHOD FOR PRODUCING POLYAMIDE-BASED RESIN EXPANDED BEADS 有权

    公开(公告)号：US20230053755A1

    公开(公告)日：2023-02-23

    申请号：US17794760

    申请日：2021-02-01

    申请人： JSP CORPORATION

    发明人： Tatsuya HAYASHI

    IPC分类号： C08J9/16

    摘要： Polyamide-based resin expanded beads contain a polyamide-based resin as a base material resin. The beads have a crystal structure, an intrinsic peak of the polyamide-based resin and a high-temperature peak having a peak top temperature on a higher temperature side than a peak top temperature of the intrinsic peak appear in a DSC curve obtained under a predetermined condition; an amount of heat of fusion of the high-temperature peak is within 5 J/g or more and 50 J/g or less; and a coefficient of variation of the amount of heat of fusion of the high-temperature peak is 20% or less. The beads are produced by in-mold molding. A method for producing the beads includes: impregnating a polyamide-based resin; and releasing expandable polyamide-based resin beads from a sealed container, a temperature in the sealed container is raised at a rate of 0.3° C. or higher and 1.5° C. or lower per 10 minutes.

    Skin material-coated foamed particle molded body
    47.
    发明授权
    Skin material-coated foamed particle molded body 有权

    公开(公告)号：US11529754B2

    公开(公告)日：2022-12-20

    申请号：US16494255

    申请日：2018-03-19

    申请人： JSP CORPORATION

    发明人： Tomoo Tokiwa ,  Hiroki Kawakami

    IPC分类号： B29C44/14 ,  B29C44/44 ,  B32B5/24 ,  B32B27/12

    摘要： A skin material-coated foamed particle molded body includes a skin material made of a polypropylene-based resin molded body and a polypropylene-based resin foamed particle molded body coated with the skin material. The skin material has a multilayer structure including an inner layer adhered to the foamed particle molded body and an outer layer outside the inner layer. The outer layer contains a polypropylene-based resin and a reinforcement fiber. The inner layer contains the polypropylene-based resin and a reinforcement fiber in a lower content ratio than a content ratio of the reinforcement fiber contained in the outer layer or contains the polypropylene-based resin and substantially no reinforcement fiber. An average value of the outer layer thickness ratio to a sum of the outer and inner layer thicknesses is 0.20 or more and 0.65 or less, and a coefficient of variation Cv of the ratio is 30% or less.

    Foam particles, and moulded article thereof
    48.
    发明授权
    Foam particles, and moulded article thereof 有权

    公开(公告)号：US11466137B2

    公开(公告)日：2022-10-11

    申请号：US16348108

    申请日：2017-11-07

    申请人： JSP Corporation

    发明人： Shota Takagi ,  Masaharu Oikawa

    IPC分类号： C08J9/228 ,  C08J9/18 ,  C08K3/04 ,  C08K5/3417 ,  C08J9/16

    摘要： The present invention is concerned with expanded beads that are olefin-based thermoplastic elastomer expanded beads containing a coloring agent, wherein an apparent density of the expanded beads is 40 to 300 g/L, and an average surface layer membrane thickness (a) is 3 to 25 μm, and a molded article thereof, and is able to provide expanded beads capable of producing an expanded beads molded article which is excellent in in-mold moldability and excellent in tensile characteristics and an expanded beads molded article using the expanded beads.

    Method for producing foamed particle molded article provided with skin
    49.
    发明授权
    Method for producing foamed particle molded article provided with skin 有权

    公开(公告)号：US11420365B2

    公开(公告)日：2022-08-23

    申请号：US16469009

    申请日：2017-12-21

    申请人： JSP CORPORATION

    发明人： Hiroki Kawakami ,  Tomoo Tokiwa

    IPC分类号： B29C44/18 ,  C08J9/236 ,  C08L23/16 ,  B29B11/06 ,  C08J9/232 ,  B29K23/00 ,  B29K105/04

    摘要： A method for producing a foamed particle molded article provided with a skin, includes: forming a hollow molded article; filling a hollow part of the hollow molded article with polypropylene-based resin foamed particles; and heating and fusing the particles to each other. A melt elongation at 190° C. of the polypropylene-based resin forming the hollow molded article is 100 m/min or more. A half-crystallization time at 100° C. of the polypropylene-based resin is between 25 to 80 seconds. In heat flux differential scanning calorimetry, a melting peak temperature of the polypropylene-based resin is between 130 to 155° C., a partial heat of fusion at 140° C. or more of the polypropylene-based resin is between 20 to 50 J/g, and a ratio of the partial heat of fusion of the polypropylene-based resin to the total (partial heat of fusion/total heat of fusion) is between 0.2 to 0.8.

    THERMOPLASTIC ELASTOMER FOAM PARTICLES AND MOLDED BODY OF SAME
    50.
    发明申请
    THERMOPLASTIC ELASTOMER FOAM PARTICLES AND MOLDED BODY OF SAME 有权

    公开(公告)号：US20220235216A1

    公开(公告)日：2022-07-28

    申请号：US17610659

    申请日：2020-04-23

    申请人： JSP Corporation

    发明人： Shota TAKAGI ,  Akinobu HIRA

    IPC分类号： C08L53/00

    摘要： The present invention relates to cylindrical expanded thermoplastic elastomer beads provided with through-holes, the expanded thermoplastic elastomer beads including a core layer in an foamed state constituted of a base polymer containing a thermoplastic elastomer and a cover layer covering the core layer and constituted of a thermoplastic polymer, wherein a coefficient of dynamic friction of the thermoplastic polymer is 0.8 or less, and a difference between a melting point (Tmc) of the base polymer and a melting point (Tms) of the thermoplastic polymer is −20° C. or more and 20° C. or less. The present invention also relates to an expanded thermoplastic elastomer beads molded article formed by subjecting expanded thermoplastic elastomer beads provided with through-holes to in-mold molding, the molded article including a core layer in a foamed state and a cover layer covering the core layer, wherein a voidage is 15% or more, a density is 10 kg/m3 or more and 200 kg/m3 or less, and the product of a tensile strength (MPa) and a tensile elongation (%) is 5 or more.