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公开(公告)号：US20200032024A1
公开(公告)日：2020-01-30
申请号：US16337690
申请日：2017-10-02
Applicant: JSP CORPORATION
Inventor： Shota TAKAGI , Masaharu OIKAWA
Abstract: The present invention is concerned with an expanded beads molded article of expanded beads comprising a crosslinked multi-block copolymer containing a polyethylene block and an ethylene/α-olefin copolymer block, wherein a density is 40 to 150 g/L; a gel fraction by a hot xylene extraction method is 30 to 70% by weight; a tensile elongation is 120% or more; a bead weight of the expanded beads is 0.8 to 8 mg; and the number of expanded beads per unit area on a surface of the expanded beads molded article is 5 to 30 per cm2, and is able to provide an expanded beads molded article which is light in weight and favorable in surface properties, fusion bondability, and durability.
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公开(公告)号：US20240002623A1
公开(公告)日：2024-01-04
申请号：US18368441
申请日：2023-09-14
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Masaharu OIKAWA
Abstract: The present invention relates to an in-mold expanded beads molded article of expanded beads of an olefin thermoplastic elastomer, a cushion for shoe sole, and a method of producing expanded beads provided with through-holes and composed of a block copolymer of a polyethylene block and an ethylene/α-olefin copolymer block, and with respect to the in-mold expanded beads molded article of expanded beads of an olefin thermoplastic elastomer, a voidage of the expanded beads molded article is 5 to 40%; a density of the expanded beads molded article is 30 to 150 g/L; and a flexural modulus of the olefin thermoplastic elastomer that constitutes the expanded beads molded article is 10 to 100 MPa.
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公开(公告)号：US20220235216A1
公开(公告)日：2022-07-28
申请号：US17610659
申请日：2020-04-23
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Akinobu HIRA
IPC: C08L53/00
Abstract: 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.
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公开(公告)号：US20190276627A1
公开(公告)日：2019-09-12
申请号：US16349236
申请日：2017-11-13
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Masaharu OIKAWA
Abstract: The present invention relates to an in-mold expanded beads molded article of expanded beads of an olefin thermoplastic elastomer, a cushion for shoe sole, and a method of producing expanded beads provided with through-holes and composed of a block copolymer of a polyethylene block and an ethylene/α-olefin copolymer block, and with respect to the in-mold expanded beads molded article of expanded beads of an olefin thermoplastic elastomer, a voidage of the expanded beads molded article is 5 to 40%; a density of the expanded beads molded article is 30 to 150 g/L; and a flexural modulus of the olefin thermoplastic elastomer that constitutes the expanded beads molded article is 10 to 100 MPa.
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公开(公告)号：US20220306827A1
公开(公告)日：2022-09-29
申请号：US17617521
申请日：2020-04-02
Applicant: JSP CORPORATION
Inventor： Nobumasa KOSHITA , Hajime OHTA , Shota TAKAGI
Abstract: A modified expanded bead that includes an expanded bead which includes a specific base polymer (β) and a coating layer which includes a specific base polymer (α). The coating layer covers at least part of an outer surface of the expanded bead. The melting point Tα of the base polymer (α) and the melting point Tβ of the base polymer (β) satisfy a relationship of 0≤Tα−Tβ≤20. When the modified expanded bead is cut into two halves along a cutting plane to form two half portions and thereafter one of the two half portions is cut along planes perpendicular to the cutting plane to form ten small pieces, outermost pieces among the ten small pieces have a xylene-insoluble content (B) which is less than a xylene-insoluble content (A) in the half portion and the xylene-insoluble content (A) is 10-80% by mass.
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Patent Agency Ranking
公开(公告)号：US20210395481A1
公开(公告)日：2021-12-23
申请号：US17289169
申请日：2019-10-02
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Akinobu HIRA
Abstract: Expanded beads are those including a mixture of an olefin-based thermoplastic elastomer and a polyethylene-based resin, wherein a melt flow rate MFR(I) of the olefin-based thermoplastic elastomer is 2-10 g/10 min; a difference ((MFR(II))−(MFR(I))) between a melt flow rate MFR(II) of the polyethylene-based resin and the melt flow rate MFR(I) of the olefin-based thermoplastic elastomer is 1-35 g/10 min; and a content of the polyethylene-based resin in the mixture is 3-40% by weight.
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公开(公告)号：US20190263994A1
公开(公告)日：2019-08-29
申请号：US16348410
申请日：2017-11-08
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Masaharu OIKAWA
Abstract: The present invention relates to an expanded beads molded article containing a block copolymer of a polyethylene block and an ethylene-α-olefin copolymer block and having a density of 30 kg/m3 or more and less than 150 kg/m3 and a modulus of repulsion elasticity of 60% or more. The sole member of the present invention includes the expanded beads molded article of the present invention.
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公开(公告)号：US20190256680A1
公开(公告)日：2019-08-22
申请号：US16348108
申请日：2017-11-07
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Masaharu OIKAWA
IPC: C08J9/228 , C08J9/18 , C08K5/3417 , C08K3/04
Abstract: 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.
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公开(公告)号：US20210060833A1
公开(公告)日：2021-03-04
申请号：US16348355
申请日：2017-11-08
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Masaharu OIKAWA
Abstract: An expanded beads molded article containing a block copolymer of a polyethylene block and an ethylene-α-olefin copolymer block and having a density of 150 kg/m3 or more and 500 kg/m3 or less and a tensile strength of 0.5 MPa or more.
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公开(公告)号：US20200165404A1
公开(公告)日：2020-05-28
申请号：US16613396
申请日：2018-05-15
Applicant: JSP Corporation
Inventor： Shota TAKAGI , Masaharu OIKAWA
Abstract: The present invention provides thermoplastic olefin elastomer crosslinked expanded beads, having a content of a fraction insoluble in hot xylene of 10 to 40 wt %, and having a crystal structure such that a melting peak inherent in the thermoplastic olefin elastomer (inherent peak) and one or more melting peaks on a higher temperature side than the inherent peak (high temperature peak) appear on a DSC curve obtained by heating the crosslinked expanded beads from 23° C. to 200° C. at a heating rate of 10° C./min, wherein in the DSC curve, a total heat of melting is 40 to 60 J/g, and a ratio of a heat of melting of the high temperature peak to the total heat of melting is 0.1 to 0.6.
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