公开(公告)号：US20210189089A1

公开(公告)日：2021-06-24

申请号：US17273232

申请日：2019-09-04

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Akinobu HIRA

IPC: C08J9/18

Abstract: A polyamide-based resin expanded bead comprising a foam layer formed by expanding a polyamide-based resin, wherein on a first DSC curve and a second DSC curve, the first DSC curve has a melting peak (intrinsic peak) having a peak top temperature on a low temperature side equal to or lower than a peak top temperature of a melting peak of the second DSC curve and a melting peak (high temperature peak) having a peak top temperature on a high temperature side exceeding the peak top temperature of the second DSC curve, and, the peak top temperature of the melting peak of the second DSC curve is 180° C. or higher and 280° C. or lower, and the polyamide-based resin expanded bead has an apparent density of 10 to 300 kg/m3 and a closed cell ratio of 85% or more.

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

IPC: C08J9/18 ,  C08J9/00 ,  C08J9/228 ,  C08L53/00

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.

公开(公告)号：US20250011561A1

公开(公告)日：2025-01-09

申请号：US18886548

申请日：2024-09-16

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Akinobu HIRA

IPC: C08J9/18

Abstract: A polyamide-based resin expanded bead comprising a foam layer formed by expanding a polyamide-based resin, wherein on a first DSC curve and a second DSC curve, the first DSC curve has a melting peak (intrinsic peak) having a peak top temperature on a low temperature side equal to or lower than a peak top temperature of a melting peak of the second DSC curve and a melting peak (high temperature peak) having a peak top temperature on a high temperature side exceeding the peak top temperature of the second DSC curve, and, the peak top temperature of the melting peak of the second DSC curve is 180° C. or higher and 280° C. or lower, and the polyamide-based resin expanded bead has an apparent density of 10 to 300 kg/m3 and a closed cell ratio of 85% or more.

公开(公告)号：US20210300005A1

公开(公告)日：2021-09-30

申请号：US17264725

申请日：2019-07-12

Applicant: JSP CORPORATION

Inventor： Shota TAKAGi ,  Akinobu HIRA

IPC: B32B27/08 ,  B32B7/022 ,  B32B3/30

Abstract: A laminated article includes a thermoplastic resin expanded beads molded layer A having a volume Va and a tensile modulus TMa which is 2 to 100 MPa, and a thermoplastic elastomer expanded beads molded layer B having a volume Vb and a tensile modulus TMb which is 0.05 MPa or more and less than 2 MPa, the layers A and B being laminated and bonded to each other. Va:Vb is 90:10 to 50:50 and TMb/TMa is 0.025 or less.

公开(公告)号：US20250043092A1

公开(公告)日：2025-02-06

申请号：US18886123

申请日：2024-09-16

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Akinobu HIRA

IPC: C08J9/18

Abstract: A polyamide-based resin expanded bead comprising a foam layer formed by expanding a polyamide-based resin, wherein on a first DSC curve and a second DSC curve, the first DSC curve has a melting peak (intrinsic peak) having a peak top temperature on a low temperature side equal to or lower than a peak top temperature of a melting peak of the second DSC curve and a melting peak (high temperature peak) having a peak top temperature on a high temperature side exceeding the peak top temperature of the second DSC curve, and, the peak top temperature of the melting peak of the second DSC curve is 180° C. or higher and 280° C. or lower, and the polyamide-based resin expanded bead has an apparent density of 10 to 300 kg/m3 and a closed cell ratio of 85% or more.

公开(公告)号：US20250002666A1

公开(公告)日：2025-01-02

申请号：US18883366

申请日：2024-09-12

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Akinobu HIRA

IPC: C08J9/18

Abstract: A polyamide-based resin expanded bead comprising a foam layer formed by expanding a polyamide-based resin, wherein on a first DSC curve and a second DSC curve, the first DSC curve has a melting peak (intrinsic peak) having a peak top temperature on a low temperature side equal to or lower than a peak top temperature of a melting peak of the second DSC curve and a melting peak (high temperature peak) having a peak top temperature on a high temperature side exceeding the peak top temperature of the second DSC curve, and, the peak top temperature of the melting peak of the second DSC curve is 180° C. or higher and 280° C. or lower, and the polyamide-based resin expanded bead has an apparent density of 10 to 300 kg/m3 and a closed cell ratio of 85% or more.

公开(公告)号：US20150158990A1

公开(公告)日：2015-06-11

申请号：US14555967

申请日：2014-11-28

Applicant: JSP CORPORATION

Inventor： Shota TAKAGI ,  Akinobu HIRA ,  Kazutoshi SASAKI

IPC: C08J9/228

CPC classification number: C08J9/228 ,  B29C44/04 ,  B29C44/3461 ,  B29C44/445 ,  C08J9/0061 ,  C08J9/0066 ,  C08J9/16 ,  C08J9/224 ,  C08J9/232 ,  C08J2323/02 ,  C08J2323/06 ,  C08J2323/14 ,  C08J2323/20 ,  C08J2423/02 ,  C08J2423/26 ,  Y10T428/2998

Abstract: An inorganic filler-containing, polyolefin-based resin expanded bead having an expanded core layer of a first polyolefin-based resin, and a cover layer of a second polyolefin-based resin that covers the expanded core layer, wherein a weight ratio of the cover layer to the expanded core layer is 1:99 to 20:80, the expanded core layer contains an inorganic filler in a weight percentage amount of 5 to 90%, and the cover layer contains no inorganic filler or contains an inorganic filler in a weight percentage amount lower than that in the expanded core layer.

Abstract translation: 1.一种无机填料的聚烯烃类树脂发泡珠，其具有第一聚烯烃系树脂的发泡芯层和覆盖所述发泡芯层的第二聚烯烃系树脂的覆盖层，所述覆盖层的重量比 发泡芯层为1:99〜20:80，发泡芯层含有重量百分比为5〜90％的无机填料，覆盖层不含无机填料或含有重量以下的无机填料 百分比低于膨胀核心层的百分比。

公开(公告)号：US20250002665A1

公开(公告)日：2025-01-02

申请号：US18700947

申请日：2022-09-13

Applicant: JSP CORPORATION

Inventor： Akinobu HIRA ,  Tokunobu NOHARA ,  Tatsuya HAYASHI

IPC: C08J9/18 ,  C08J9/12 ,  C08J9/232

Abstract: A polyethylene-based resin expanded bead including a non-crosslinked linear low-density polyethylene as a base resin. The density, heat of fusion, melting point, and melt flow rate measured under conditions of a temperature of 190° C. and a load of 2.16 kg of the linear low-density polyethylene fall within their respective predetermined ranges. The average cell diameter of the expanded beads is 50 μm or more and 180 μm or less.

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.

公开(公告)号：US20230203263A1

公开(公告)日：2023-06-29

申请号：US17439258

申请日：2020-03-09

Applicant: JSP CORPORATION

Inventor： Takumi SAKAMURA ,  Naoki MOCHIDA ,  Akinobu HIRA

IPC: C08J9/18 ,  C08J9/12 ,  C08J9/228 ,  C08J9/00 ,  C08J3/22 ,  C08K3/38

CPC classification number: C08J9/18 ,  C08J9/122 ,  C08J9/228 ,  C08J9/0004 ,  C08J3/226 ,  C08K3/38 ,  C08J2323/14 ,  C08J2203/06 ,  C08J2203/22 ,  C08K2003/387 ,  B29C44/44

Abstract: A molded article of polyolefin-based resin expanded beads having excellent appearance and further suppressed color unevenness is provided.
Polyolefin-based resin expanded beads obtained by expanding polyolefin-based resin particles including one or two or more metal borates selected from zinc borate and magnesium borate, wherein the particles of the metal borate has an arithmetic average particle diameter based on the number of 1 μm or more, and a number rate of the particles of the metal borate having a particle diameter of 5 μm or more is 20% or less. A method for producing polyolefin-based resin expanded beads by releasing expandable polyolefin-based resin particles containing one or two or more metal borates selected from zinc borate and magnesium borate and a physical blowing agent dispersed in an aqueous medium in a closed vessel together with the aqueous medium from the closed vessel to a low pressure region than an inside of the closed vessel to expand the expandable polyolefin-based resin particles, the method comprising: using a metal borate having an arithmetic average particle diameter based on the number of 1 μm or more and a number rate of the particles having a particle diameter of 5 μm or more of 20% or less as the metal borate.