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公开(公告)号：US20230167260A1
公开(公告)日：2023-06-01
申请号：US17995082
申请日：2021-03-26
Applicant: JSP Corporation
Inventor： Keiichi HASHIMOTO , Katsunori HISAMATSU , Shogo IWASAKI
CPC classification number: C08J9/228 , C08J9/0061 , C08J9/224 , B60N2/70 , C08J2323/12 , C08J2423/06 , C08J2203/22
Abstract: A vehicle seat core material includes a molded article that includes thermoplastic resin expanded beads. The molded article has a substantially rectangular shape in a top view, and has a front side and a rear side opposite the front side. The molded article has an average density (Z) of 20 kg/m3 to 50 kg/m3. The molded article includes, on the rear side of the molded article, a rear thin portion having a thickness of 10 mm to 40 mm, the thickness of the rear thin portion being smaller than an average thickness of the molded article. A ratio (Y/Z) of a density (Y) of the rear thin portion to the average density (Z) of the molded article is 1.05 to 3. The rear thin portion of the molded article has a fusion rate of 70% or more.
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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：US20200238870A1
公开(公告)日：2020-07-30
申请号：US16486269
申请日：2018-02-15
Applicant: JSP CORPORATION
Inventor： Atsuo TAKAYAMA , Keiichi HASHIMOTO , Katsunori HISAMATSU
IPC: B60N2/70
Abstract: A seat core material of the present invention is a seat core material for vehicle including a thermoplastic resin expanded bead article and a frame member embedded in a peripheral edge portion of the expanded bead article. The frame member includes a front frame part, a rear frame part, and two side frame parts interconnecting the front frame part and the rear frame part. Slits crossing the two side frame parts are formed along a longitudinal direction with continuous parts left intact outside the side frame parts on both ends of the expanded bead article. The slit penetrates or does not penetrate the expanded bead article in a thickness direction. The continuous parts are formed in a curved shape or a bent shape.
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公开(公告)号：US20180079328A1
公开(公告)日：2018-03-22
申请号：US15558498
申请日：2016-03-04
Applicant: JSP Corporation
Inventor： Motoaki UEGURI , Atsuo TAKAYAMA , Keiichi HASHIMOTO
CPC classification number: B60N2/24 , A47C7/18 , A47C7/185 , B29C33/42 , B60N2/64 , B60N2/68 , B60N2/70 , B60N2/7035 , B60N2/707 , B60N2/90 , B60N2/995 , B60N2205/20 , B60N2205/30
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：US20240109271A1
公开(公告)日：2024-04-04
申请号：US18285420
申请日：2022-03-29
Applicant: JSP CORPORATION
Inventor： Katsunori HISAMATSU , Keiichi HASHIMOTO
CPC classification number: B32B5/18 , B32B27/065 , B32B27/32 , B32B27/40 , C08J9/228 , B60N3/048 , C08J2375/04
Abstract: A core member used for a laminate in which polyurethane foam is laminated on the core member made of a thermoplastic resin expanded beads molded article, such that the molded article in which expanded beads having through holes are mutually fused, an average porosity of the expanded beads molded article is between 10% and 25%, and on a surface of the expanded beads molded article, a ratio of a total opening area of the through hole portions of the expanded beads to a surface area of the expanded beads molded article is between 2% and 5%, an average opening area of the through hole portions of the expanded beads is between 5 mm2 and 20 mm2, and the ratio of the number of through hole portions having an opening area of 2 mm2 or more to the number of through hole portions of the expanded beads is 60% or less.
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Patent Agency Ranking
公开(公告)号：US20200000235A1
公开(公告)日：2020-01-02
申请号：US16489033
申请日：2018-02-26
Applicant: JSP Corporation
Inventor： Keiichi HASHIMOTO , Katsunori HISAMATSU
Abstract: Provided is a core material of a seat cushion for a vehicle. The core material includes: a thermoplastic resin expanded beads molded article 2 that has a substantially rectangular shape in a top view, the rectangular shape having a long side and a short side; and an annular reinforcing member 3 that is insert-molded in the peripheral edge part of the expanded beads molded article. A missing part 4 is formed in the expanded beads molded article, the missing part passing through in the thickness direction. A slit 7 is formed in at least one corner of the lightening part, the slit being oriented outward from the expanded beads molded article from the vicinity of the corner part.
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公开(公告)号：US20190350365A1
公开(公告)日：2019-11-21
申请号：US16474225
申请日：2017-12-27
Applicant: JSP CORPORATION
Inventor： Keiichi HASHIMOTO , Katsunori HISAMATSU , Atsuo TAKAYAMA
Abstract: A seat core material having reduced deformation, extremely excellent dimensional accuracy, sense of unity, and strength is thus provided. The frame member and the foamed particle molding are integrated in the seat core material.
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公开(公告)号：US20180368578A1
公开(公告)日：2018-12-27
申请号：US16062644
申请日：2016-12-20
Applicant: JSP CORPORATION
Inventor： Atsuo TAKAYAMA , Motoaki UEGURI , Keiichi HASHIMOTO
Abstract: A method for producing a seat core material that has a foamed molded substrate and a frame member embedded in a periphery thereof, which includes, as step (a), heating thermoplastic resin expanded beads in a mold cavity, in which the frame member has been disposed, to fusion-bond the expanded beads to each other and to obtain the foamed molded substrate with the frame member 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 at a position along and adjacent to the frame member. The void cavity S, S′ has a size and shape that allows a relative displacement between the frame member and the foamed molded substrate when the foamed molded substrate shrinks after step (b).
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公开(公告)号：US20170252952A1
公开(公告)日：2017-09-07
申请号：US15509966
申请日：2015-09-15
Applicant: JSP CORPORATION
Inventor： Atsuo TAKAYAMA , Motoaki UEGURI , Keiichi HASHIMOTO
CPC classification number: B29C44/1271 , B29C44/00 , B29C44/56 , B29K2023/12 , B29K2705/12 , B29L2031/58 , B29L2031/771 , B60N2/005 , B60N2/646 , B60N2/90
Abstract: A method for manufacturing including securing attachments disposed near both ends in the seat core member front portion made of a molded article of expanded beads, the securing attachments being connected by an embedded connecting member extending in the seat core member longitudinal direction. The securing attachment includes a base embedded in the molded article of expanded beads, an upright frame joined to the base to extend out of the molded article of expanded beads, and a securing portion extending from the upright frame to project away from the molded article of expanded beads. The method includes creating, during or after molding the molded article of expanded beads, a space or notch in an outer side of the securing attachment upright frame of the molded article of expanded beads in the seat core member longitudinal direction, the notch extending toward an outer side in the seat core member longitudinal direction.
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公开(公告)号：US20240017451A1
公开(公告)日：2024-01-18
申请号：US18033741
申请日：2021-10-08
Applicant: JSP Corporation
Inventor： Katsunori HISAMATSU , Keiichi HASHIMOTO
IPC: B29C44/20 , B29K23/00 , B29K105/04
CPC classification number: B29C44/206 , B29K2023/00 , B29K2995/0082 , B29K2995/0094 , B29K2105/048
Abstract: The present invention relates to a method for producing a laminate, wherein the laminate is obtained by integrally laminating an expanded beads molded article (a) composed of expanded beads A and having interconnected voids and an expanded beads molded article (b) composed of expanded particles B and having interconnected voids, the difference [Pb−Pa] between the voidage (Pa) of the expanded beads molded article (a) and the voidage (Pb) of the expanded beads molded article (b) is 5% or more, and the expanded beads A and the expanded beads B satisfy the following (1) to (3): (1) a difference [dB−dA] between an average hole diameter (dA) of the through-holes of the expanded beads (A) and an average hole diameter (dB) of the through-holes of the expanded beads (B) is 0.3 mm or more and 2 mm or less; (2) the expanded beads (B) have an average outer diameter DB of 3.5 mm or more and 5 mm or less; (3) a difference [DB−DA] between an average outer diameter DA of the expanded beads (A) and an average outer diameter DB of the expanded beads (B) is −0.3 mm or more and 2 mm or less.
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