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2. 发明公开

EP4417643A1 POLYPROPYLENE RESIN FOAM PARTICLES 审中-实审
公开(公告)号：EP4417643A1
公开(公告)日：2024-08-21
申请号：EP22880953.9
申请日：2022-10-07
申请人： JSP Corporation
发明人： SAITO, Yukiya , OHTA, Hajime
IPC分类号： C08J9/16 , C08F110/06
CPC分类号： C08F110/06 , C08J9/16
摘要： 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.

3. 发明授权

EP3970959B1 THERMOPLASTIC ELASTOMER FOAM PARTICLES AND MOLDED BODY OF SAME 有权
公开(公告)号：EP3970959B1
公开(公告)日：2024-01-10
申请号：EP20809329.4
申请日：2020-04-23
发明人： TAKAGI, Shota , HIRA, Akinobu
IPC分类号： B29K19/00 , B29K23/00 , B29K105/04 , C08J9/18 , C08J9/34 , B29C44/00 , B29C44/36

5. 发明授权

EP4130116B1 POLYPROPYLENE-BASED RESIN EXPANDED BEADS AND MOLDED ARTICLE OF POLYPROPYLENE-BASED RESIN EXPANDED BEADS 有权
公开(公告)号：EP4130116B1
公开(公告)日：2023-12-13
申请号：EP22186164.4
申请日：2022-07-21
发明人： YAMASAKI, Shobu , NOHARA, Tokunobu
IPC分类号： C08J9/00

7. 发明公开

EP3590391A1 VEHICLE SEAT CUSHION CORE 有权
公开(公告)号：EP3590391A1
公开(公告)日：2020-01-08
申请号：EP18761896.2
申请日：2018-02-26
申请人： JSP Corporation
发明人： TAKAYAMA, Atsuo , MATSUMOTO, Takamitsu
IPC分类号： A47C27/14 , A47C7/20 , B60N2/90
摘要： Provided is a vehicle seat cushion core that is composed of: a thermoplastic resin expanded beads molded article (2) that has a substantially rectangular shape in top view, that has a thick part (4) at a front part (2a) and both side parts (2b) of a peripheral edge part thereof, and that has an occupant sitting part at an upper surface of a region thereof inside from the peripheral edge part; and an annular frame member (3) that is insert-molded at the peripheral edge part of the thermoplastic resin expanded beads molded article (2). In the thermoplastic resin expanded beads molded article (2), formed are first slits (7) having: slit pieces (9) that extend along a front frame member at a position in front of the occupant sitting part and inside from the front frame part; and slit pieces that extend along a side frame member at a position outside from the occupant sitting part and inside from a side frame part. At least one second slit is formed that intersects the frame member at a position which is in the thick part and at which the frame member is buried.

8. 发明公开

EP3530429A1 METHOD FOR MANUFACTURING THERMOPLASTIC ELASTOMER FOAMING PARTICLE MOLDED BODY 有权
公开(公告)号：EP3530429A1
公开(公告)日：2019-08-28
申请号：EP17861841.9
申请日：2017-10-10
申请人： JSP Corporation
发明人： OGAKI, Yoshihisa
IPC分类号： B29C44/44 , B29C44/00 , B29C44/60 , B29C67/20 , C08J9/232 , B29K23/00 , B29K75/00
摘要： The present invention relates to a method for producing an expanded beads molded article including performing in-mold molding by a molding method of filling expanded thermoplastic elastomer beads in a mold in a compressed state, in which expanded thermoplastic elastomer beads having a particular bulk density and a particular closed cell ratio are used, and a particular relationship between the internal pressure of the expanded beads and the compression filling ratio is satisfied. According to the method, an expanded thermoplastic elastomer beads molded article excellent in appearance, excellent in dimensional stability, and excellent in fusion bondability, compression characteristics, and rebound resilience of the expanded beads can be produced.

9. 发明公开

EP3438175A1 THERMOPLASTIC POLYURETHANE FOAMED PARTICLES AND METHOD FOR MANUFACTURING THERMOPLASTIC POLYURETHANE FOAMED PARTICLE MOLDED ARTICLE 有权
公开(公告)号：EP3438175A1
公开(公告)日：2019-02-06
申请号：EP17773665.9
申请日：2017-02-03
申请人： JSP Corporation
发明人： OIKAWA, Masaharu , NISHIJIMA, Koki , KOSHITA, Nobumasa , HAYASHI, Tatsuya
IPC分类号： C08J9/224 , B29C44/00 , B29K75/00
摘要： The present invention is concerned with expanded beads of thermoplastic polyurethane in which a water-soluble anionic surfactant is attached at 50 mg/m 2 to 1,000 mg/m 2 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.

10. 发明公开

EP3395205A1 METHOD FOR PRODUCING SHEET CORE MATERIAL, AND SHEET CORE MATERIAL 有权
公开(公告)号：EP3395205A1
公开(公告)日：2018-10-31
申请号：EP16878687.9
申请日：2016-12-20
申请人： JSP CORPORATION
发明人： TAKAYAMA, Atsuo , UEGURI, Motoaki , HASHIMOTO, Keiichi
IPC分类号： A47C27/14 , A47C7/18 , A47C7/24 , B60N2/44
CPC分类号： A47C7/18 , A47C7/24 , A47C27/14 , B60N2/90
摘要： A method for producing a seat core material 1 that has a foamed molded substrate 2 and a frame member 3 embedded in a periphery thereof, which includes, as step (a), heating thermoplastic resin expanded beads in a mold cavity, in which the frame member 3 has been disposed, to fusion-bond the expanded beads to each other and to obtain the foamed molded substrate with the frame member 3 being embedded in the periphery thereof; and, as step (b), simultaneously with step (a) or after step (a), forming a void cavity S, S' in the foamed molded substrate 2 at a position along and adjacent to the frame member 3. The void cavity S, S' has a size and shape that allows a relative displacement between the frame member 3 and the foamed molded substrate 2 when the foamed molded substrate shrinks after step (b).

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