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    Method for production of extruded, polystyrene-based resin foam plate and extruded foam plate obtained thereby
    41.
    发明申请
    Method for production of extruded, polystyrene-based resin foam plate and extruded foam plate obtained thereby 失效
    用于制造由此获得的挤出的，聚苯乙烯基树脂泡沫板和挤出泡沫板的方法

    公开(公告)号：US20030124334A1

    公开(公告)日：2003-07-03

    申请号：US10170706

    申请日：2002-06-14

    Applicant: JSP CORPORATION

    Inventor： Masato Naito ,  Naochika Kogure ,  Daisuke Imanari ,  Noritoshi Nishiyama

    IPC: B32B003/26 ,  B29C044/00

    CPC classification number: C08J9/149 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/12 ,  C08J2203/14 ,  C08J2205/052 ,  C08J2325/06 ,  Y10S264/05 ,  Y10T428/249977

    Abstract: A method for production of an extruded, polystyrene-based foam plate wherein a polystyrene-based resin is heated and kneaded together with a blowing agent, a flame retardant and a nucleating agent in an extruder to obtain a foamable molten composition, and the foamable molten composition is extruded through a die attached to an end of the extruder into a lower pressure zone. The blowing agent comprises not smaller than 25% by weight but not greater than 65% by weight, based on the total weight of the blowing agent, of an isobutane-containing saturated hydrocarbon; not smaller than 5% by weight but not greater than 70% by weight, based on the total weight of the blowing agent, of a dimethyl ether-containing ether; not smaller than 5% by weight but not greater than 55% by weight, based on the total weight of the blowing agent, of carbon dioxide; and 0-25% by weight, based on the total weight of the blowing agent, of other blowing agent components.

    Abstract translation: 一种挤出的基于聚苯乙烯的泡沫板的制造方法，其中将聚苯乙烯类树脂与挤出机中的发泡剂，阻燃剂和成核剂一起加热和捏合以获得可发泡的熔融组合物，并且将可发泡的熔融 组合物通过连接到挤出机端部的模具挤出成低压区。 发泡剂包含基于发泡剂总重量的不小于25重量％但不大于65重量％的含异丁烷的饱和烃; 不小于5重量％但不大于70重量％，基于发泡剂的总重量;含二甲醚的醚; 不低于5重量％但不大于55重量％，基于发泡剂的总重量;二氧化碳; 和基于发泡剂总重量的0-25重量％的其它发泡剂组分。

    Production method of foamed polypropylene resin beads
    42.
    发明申请
    Production method of foamed polypropylene resin beads 有权
    发泡聚丙烯树脂珠的生产方法

    公开(公告)号：US20030034580A1

    公开(公告)日：2003-02-20

    申请号：US10163366

    申请日：2002-06-07

    Applicant: JSP CORPORATION

    Inventor： Hidehiro Sasaki ,  Kazuya Ogiyama ,  Akinobu Hira ,  Keiichi Hashimoto ,  Hiroki Yanagisawa ,  Hisao Tokoro

    IPC: B29C044/02

    CPC classification number: C08J9/18 ,  B29C44/445 ,  C08J2203/06 ,  C08J2323/12

    Abstract: A method for producing expanded polypropylene resin particles wherein polypropylene resin particles impregnated with a physical blowing agent are heated along with an aqueous medium and a dispersant and are released and expanded at reduced pressure from the interior of a pressure-tight vessel, wherein the aforementioned aqueous medium has an electrical conductivity of from not less than 0.00 ms/m to not more than 20.00 mS/m. The resulting particles obtained are without inconsistencies caused by differences in the amount of dispersant adhering to the particles or the amount of dispersant added to prevent the particles from fusing together during the heat treatment step of the method.

    Abstract translation: 一种生产发泡聚丙烯树脂颗粒的方法，其中浸渍有物理发泡剂的聚丙烯树脂颗粒与水性介质和分散剂一起加热，并在减压下从压力容器的内部释放和膨胀，其中上述水溶液 介质的导电率不小于0.00ms / m到不大于20.00mS / m。 获得的所得颗粒没有由附着于颗粒的分散剂的分散量的不均匀性或加入的分散剂的量而引起的不一致，以防止在该方法的热处理步骤期间颗粒熔合在一起。

    METHOD FOR PRODUCING POLYPROPYLENE-BASED RESIN EXPANDED BEADS
    44.
    发明申请
    METHOD FOR PRODUCING POLYPROPYLENE-BASED RESIN EXPANDED BEADS 有权

    公开(公告)号：US20250001657A1

    公开(公告)日：2025-01-02

    申请号：US18694740

    申请日：2022-08-16

    Applicant: JSP CORPORATION

    Inventor： Akinobu HIRA ,  Tokunobu NOHARA

    IPC: B29C44/34 ,  B29C44/02 ,  B29K23/00 ,  B29K105/04 ,  B29K507/04

    Abstract: A method for producing polypropylene-based resin expanded beads containing a post-consumer recycled material of a polypropylene-based resin foamed molded article containing carbon black in order to enable provision of a black expanded beads molded article excellent in appearance and physical properties using a post-consumer recycled material of a polypropylene-based resin foamed molded article containing carbon black. The method includes: a mixing step of melt-mixing a polypropylene-based resin at 230° C. under a load of 2.16 kg and a polypropylene-based resin recovered materials including of a recovered materials of a post-consumer recycled material of a polypropylene-based resin foamed molded article with an extruder to obtain a mixture; an extrusion step; and a foaming step, wherein in the mixture, the polypropylene-based resin recovered materials contains carbon black.

    POLYPROPYLENE RESIN FOAM PARTICLES
    45.
    发明申请
    POLYPROPYLENE RESIN FOAM PARTICLES 有权

    公开(公告)号：US20240409704A1

    公开(公告)日：2024-12-12

    申请号：US18700608

    申请日：2022-10-07

    Applicant: JSP Corporation

    Inventor： Yukiya SAITO ,  Hajime OHTA

    IPC: C08J9/18 ,  C08J9/00 ,  C08J9/12

    Abstract: A polypropylene-based resin expanded bead, in which the melting point Tma of a polypropylene-based resin (a) constituting a core layer in an expanded state is 135° C. or higher and 155° C. or lower; a polypropylene-based resin (b) constituting a covering layer contains a propylene-based copolymer containing a propylene component, an ethylene component, and a butene component, as a main component; the difference [Tma−Tmb] between the melting point Tma of the polypropylene-based resin (a) and the melting point Tmb of the polypropylene-based resin (b) is 1° C. or more and 30° C. or less; the difference [Tmb−Tcb] between the melting point Tmb of the polypropylene-based resin (b) and the crystallization temperature Tcb of the polypropylene-based resin (b) is 40° C. or less; and the covering layer contains a higher fatty acid amide.

    METHOD FOR PRODUCING POLYAMIDE-BASED RESIN MULTI-STAGE-EXPANDED BEADS
    48.
    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

    Applicant: JSP CORPORATION

    Inventor： Tetsu OTSUKA

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

    CPC classification number: C08J9/18 ,  C08J9/228 ,  C08J9/12

    Abstract: 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.

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