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公开(公告)号：US20200094451A1
公开(公告)日：2020-03-26
申请号：US16469009
申请日：2017-12-21
Applicant: JSP CORPORATION
Inventor： Hiroki KAWAKAMI , Tomoo TOKIWA
Abstract: A method for producing a foamed particle molded article provided with a skin, includes: forming a hollow molded article; filling a hollow part of the hollow molded article with polypropylene-based resin foamed particles; and heating and fusing the particles to each other. A melt elongation at 190° C. of the polypropylene-based resin forming the hollow molded article is 100 m/min or more. A half-crystallization time at 100° C. of the polypropylene-based resin is between 25 to 80 seconds. In heat flux differential scanning calorimetry, a melting peak temperature of the polypropylene-based resin is between 130 to 155° C., a partial heat of fusion at 140° C. or more of the polypropylene-based resin is between 20 to 50 J/g, and a ratio of the partial heat of fusion of the polypropylene-based resin to the total (partial heat of fusion/total heat of fusion) is between 0.2 to 0.8.
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公开(公告)号：US20200062157A1
公开(公告)日：2020-02-27
申请号：US16489039
申请日：2018-02-26
Applicant: JSP Corporation
Inventor： Atsuo TAKAYAMA , Takamitsu MATSUMOTO
Abstract: Provided is a core material of a seat cushion for a vehicle, including: a thermoplastic resin expanded beads molded article having a substantially rectangular shape in top view, that has thick portions on a front side and both sides of a circumferential portion thereof, and that has an occupant seating portion on an upper surface in an inner region thereof; and an annular frame member that is insert-molded at the circumferential portion of the thermoplastic resin expanded beads molded article. In the thermoplastic resin expanded beads molded article, formed are first slits having: slit pieces 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.
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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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24.发明申请公开(公告)号：US20190382550A1
公开(公告)日：2019-12-19
申请号：US16463755
申请日：2017-11-15
Applicant: JSP Corporation
Inventor： Tatsuya HAYASHI , Nobumasa KOSHITA , Masaharu OIKAWA
Abstract: The present invention provides expanded beads of thermoplastic polyurethane, wherein the thermoplastic polyurethane constituting the expanded beads is an ether-based thermoplastic polyurethane, and a difference (T1−T2) between a melting peak temperature (T1) and a melting peak temperature (T2) is from 0 to 8° C., wherein the melting peak temperature (T1) is a melting peak temperature at the time of first heating in a DSC curve obtained by heating the expanded beads from 20° C. to 260° C. at a heating rate of 10° C./min, the melting peak temperature (T2) is a melting peak temperature at the time of second heating in a DSC curve obtained by cooling from 260° C. to 20° C. at a cooling rate of 10° C./min after the first heating and further heating again from 20° C. to 260° C. at a heating rate of 10° C./min, and the DSC curves are obtained by the heat flux differential scanning calorimetry in conformity with JIS K7121-1987. The expanded beads of thermoplastic polyurethane not only have excellent surface appearance and fusion bonding properties but also have a low shrinkage factor.
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公开(公告)号：US20190099002A1
公开(公告)日：2019-04-04
申请号：US16089624
申请日：2017-02-17
Applicant: JSP CORPORATION
Inventor： Seishiro MURATA , Hiroyuki ITO
Abstract: A long synthetic resin foam body composed of a thermoplastic resin expanded beads-molded substrate and a frame having displacement regulating sections provided at both ends in the longitudinal or lateral direction of the substrate and a connecting section that connects the displacement regulating sections to each other. The substrate has at least one joint forming portion that divides the substrate in a direction intersecting the connecting section into two or more substrate parts. The joint forming portion has a joint that connects the adjacent two substrate parts to each other and is deformable to permit a relative displacement between the adjacent two substrate parts when the substrate contracts or expands.
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Patent Agency Ranking
公开(公告)号：US10232534B2
公开(公告)日：2019-03-19
申请号：US14322257
申请日：2014-07-02
Applicant: JSP CORPORATION
Inventor： Tomoo Tokiwa
IPC: B29C44/20 , B29C44/08 , B29C44/18 , B29C49/00 , B29K23/00 , B29L31/30 , B29C49/04 , B29C44/34 , B29K105/04 , B29C49/22 , B29C49/46
Abstract: A method for producing a skin-covered polyolefin-based resin foamed molded article, including blow-molding a polyolefin parison into a skin defining a hollow space; and placing multi-layered polyolefin expanded beads in the hollow space; and heating the expanded beads placed in the hollow space to fuse-bond the expanded beads together and to fuse-bond the expanded beads to the skin, wherein the expanded beads have specific apparent density, specific average diameter, specific endothermic peaks in their DSC curve and specific melting point characteristics.
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公开(公告)号：US10195966B2
公开(公告)日：2019-02-05
申请号：US15558498
申请日：2016-03-04
Applicant: JSP Corporation
Inventor： Motoaki Ueguri , Atsuo Takayama , Keiichi Hashimoto
Abstract: A seat core member of a seat portion provided with the seat core member made of a hard synthetic resin foam and a cushion layer made of a soft synthetic resin foam and covering the seat core member is provided, and the seat core member includes a plurality of ridges extending in a rising direction of the seat core member in a rising portion of the seat core member being in contact with the cushion layer and opposing to calves of a body is formed.
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公开(公告)号：US20190014907A1
公开(公告)日：2019-01-17
申请号：US16067645
申请日：2017-02-03
Applicant: JSP CORPORATION
Inventor： Katsunori HISAMATSU , Atsuo TAKAYAMA , Keiichi HASHIMOTO
Abstract: There is provided a vehicle seat core member that is superior in terms of a dimensional accuracy as well as integrity of a thermoplastic resin expanded beads molded body and a frame member. A vehicle seat core member (100) is formed as an integrally molded article of a thermoplastic resin expanded beads molded body (10) and a frame member (20), the thermoplastic resin expanded beads molded body (10) is formed of thermoplastic resin expanded beads (30) having through holes (32), and a porosity of the thermoplastic resin expanded beads molded body (10) is 10 vol % or more and 40 vol % or less.
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公开(公告)号：US10106664B2
公开(公告)日：2018-10-23
申请号：US15580308
申请日：2016-06-03
Applicant: JSP CORPORATION
Inventor： Takuya Chiba , Masaharu Oikawa
Abstract: Thermoplastic resin foamed particles of the present invention including more than one functional additive selected from inorganic powder and inorganic fibers each includes a core layer formed of a thermoplastic resin and a coating layer in a foamed state formed of a thermoplastic resin, the mass ratio of the coating layer to the core layer is 99:1 to 50:50, the content (X) of the functional additive in the core layer is 5 to 90% by mass, and the content of the functional additive in the coating layer is smaller than the content (X) of the functional additive in the core layer. By this way, thermoplastic resin foamed particles from which a homogeneous foamed particle molding having excellent dimension stability, fusibility and appearance can be obtained while containing functional additive are provided.
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公开(公告)号：US20180163010A1
公开(公告)日：2018-06-14
申请号：US15580308
申请日：2016-06-03
Applicant: JSP CORPORATION
Inventor： Takuya CHIBA , Masaharu OIKAWA
CPC classification number: C08J9/16 , B29B9/06 , B29C44/02 , B29C44/3415 , B29C44/3461 , B32B5/18 , B32B27/18 , C08J9/0061 , C08J9/008 , C08J9/122 , C08J9/18 , C08J9/228 , C08J9/232 , C08J2201/034 , C08J2203/06 , C08J2205/044 , C08J2205/052 , C08J2207/00 , C08J2323/12 , C08J2323/14 , C08J2423/14
Abstract: Thermoplastic resin foamed particles of the present invention including more than one functional additive selected from inorganic powder and inorganic fibers each includes a core layer formed of a thermoplastic resin and a coating layer in a foamed state formed of a thermoplastic resin, the mass ratio of the coating layer to the core layer is 99:1 to 50:50, the content (X) of the functional additive in the core layer is 5 to 90% by mass, and the content of the functional additive in the coating layer is smaller than the content (X) of the functional additive in the core layer. By this way, thermoplastic resin foamed particles from which a homogeneous foamed particle molding having excellent dimension stability, fusibility and appearance can be obtained while containing functional additive are provided.
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