公开(公告)号：US20200032025A1

公开(公告)日：2020-01-30

申请号：US16491456

申请日：2018-03-01

Applicant: JSP Corporation

Inventor： Nobumasa KOSHITA ,  Masaharu OIKAWA ,  Tatsuya HAYASHI

IPC: C08J9/232 ,  C08J9/18 ,  B29C44/44 ,  B29C44/02

Abstract: The present invention relates to an expanded beads molded article, which is obtained through in-mold molding of expanded thermoplastic elastomer beads, has voids, and has a density of 150 to 300 kg/m3 and a voidage of 10 to 70% by volume.

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：US20210095091A1

公开(公告)日：2021-04-01

申请号：US16634637

申请日：2018-08-01

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Nobumasa KOSHITA ,  Masaharu OIKAWA

IPC: C08J9/16

Abstract: The present invention relates to expanded thermoplastic urethane-based elastomer beads including, as a base material, a thermoplastic urethane-based elastomer having a melting point Tm of 175° C. or higher and such a glass transition temperature Tg that a difference (Tm-Tg) between the melting point Tm and the glass transition temperature Tg is 200° C. or more.

公开(公告)号：US20190153189A1

公开(公告)日：2019-05-23

申请号：US16313236

申请日：2017-05-12

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Nobumasa KOSHITA ,  Masaharu OIKAWA

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

Abstract: An in-mold molded article of expanded thermoplastic polyurethane beads containing a colorant, wherein when an average surface cell wall thickness of the in-mold molded article is 20 μm or more, the expanded TPU beads molded article is high in uniformity of color and good in color developing properties. Expanded thermoplastic polyurethane beads containing a colorant, wherein when an apparent density of the expanded beads is 80 to 300 kg/m3, an average cell diameter of the expanded beads is 100 to 400 μm, and an average surface cell wall thickness of the expanded beads is 15 μm or more, a molded article resulting from in-mold molding of the expanded beads is suppressed in color unevenness and has high uniformity of color.

公开(公告)号：US20190112444A1

公开(公告)日：2019-04-18

申请号：US16088713

申请日：2017-03-27

Applicant: JSP Corporation

Inventor： Nobumasa KOSHITA ,  Tatsuya HAYASHI ,  Masaharu OIKAWA

IPC: C08J9/232 ,  C08J9/18 ,  C08L75/04

Abstract: Provided are spherical expanded beads obtained through expansion of thermoplastic polyurethane beads, wherein a bead mass of the expanded beads is 3 to 12 mg, and a ratio of a long diameter to a short diameter of the expanded bead (long diameter/short diameter) is 1.5 or less; an apparent density of the expanded beads is 80 to 300 kg/m3; an average cell diameter Da of the expanded beads is 80 to 300 μm; and a closed cell ratio of the expanded beads is 80% or more.

公开(公告)号：US20190100640A1

公开(公告)日：2019-04-04

申请号：US16088746

申请日：2017-02-03

Applicant: JSP Corporation

Inventor： Masaharu OIKAWA ,  Koki NISHIJIMA ,  Nobumasa KOSHITA ,  Tatsuya HAYASHI

IPC: C08J9/236 ,  B29C44/02 ,  B29C44/44 ,  C08J9/224 ,  C08J9/20

Abstract: The present invention is concerned with expanded beads of thermoplastic polyurethane in which a water-soluble anionic surfactant is attached at 50 mg/m2 to 1,000 mg/m2 onto the surfaces of expanded beads of thermoplastic polyurethane having a dispersant attached thereto; and a method for producing an expanded beads molded article, including filling the expanded beads of thermoplastic polyurethane in a mold for molding and heating with a water vapor to mutually fuse the expanded beads with each other. The present invention provides expanded beads from which an expanded TPU beads molded article having excellent tensile strength and a method for producing an expanded TPU beads molded article.