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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
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.
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2.发明申请公开(公告)号：US20180155518A1
公开(公告)日：2018-06-07
申请号：US15578608
申请日：2016-05-25
Applicant: JSP Corporation
Inventor： Nobumasa KOSHITA , Koki NISHIJIMA , Masaharu OIKAWA
CPC classification number: C08J9/18 , B29C44/3461 , B29C44/445 , B29K2075/00 , B29K2101/12 , B29K2105/046 , B29K2995/0063 , B29K2995/007 , C08J9/228 , C08J9/232 , C08J2205/052 , C08J2300/22 , C08J2375/04 , C08L75/04
Abstract: Provided are expanded beads capable of providing an expanded thermoplastic polyurethane beads molded article which is excellent in physical properties, such as compression characteristics, repulsion elasticity, etc., and an expanded thermoplastic polyurethane beads molded article. Expanded beads of thermoplastic polyurethane, wherein a Shore A hardness of the thermoplastic polyurethane is 85 or more; an average cell diameter of the expanded beads is 50 to 300 μm; and a closed cell ratio when bisecting the expanded thermoplastic polyurethane bead is 60% or more; and an expanded thermoplastic polyurethane beads molded article obtained through in-mold molding of the same are disclosed.
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