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公开(公告)号：US11338546B2
公开(公告)日：2022-05-24
申请号：US16645420
申请日：2018-09-14
申请人： JSP CORPORATION
发明人： Tomoo Tokiwa
IPC分类号： B32B5/24 , B29B11/06 , B29B11/16 , B29C44/14 , B29C44/44 , B32B27/20 , B32B27/32 , C08J9/00 , C08J9/228 , B29K23/00 , B29K309/08 , B29L9/00
摘要： A skin-covered foamed molded article having excellent lightweight property, bending rigidity, and favorable dimensional stability, which includes: a skin material composed of a hollow molded body produced by blow-molding an extruded parison; and an expanded bead molded article located inside the skin material, wherein the skin material has an average wall thickness of from 1.0 mm to 5.0 mm, the skin material includes a glass fiber-reinforced polypropylene-based resin containing glass fiber in a range of from 5 mass % to 30 mass %, the glass fiber has a weight-average fiber length of from 0.4 mm to 1.5 mm, the expanded bead molded article includes a polypropylene-based resin, the peeling strength between the skin material and the expanded bead molded article is 0.1 MPa or higher, and the longitudinal linear expansion coefficient of the skin-covered foamed molded article (100) at from 23° C. to 80° C. is 7×10−5/° C. or lower.
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公开(公告)号：US11161328B2
公开(公告)日：2021-11-02
申请号：US16740609
申请日：2020-01-13
申请人： JSP CORPORATION
发明人： Ryuichi Taniguchi , Hirotoshi Kakuta , Takashi Ori
摘要： A laminated foam sheet having a polyethylene resin foam layer and an antistatic polyethylene layer laminated on one or both sides thereof is produced by coextruding melts for respective layers, wherein the melt for the antistatic layer contains a polyethylene resin, an ionomer resin antistatic agent and a specific amount of volatile plasticizer blend containing an alcohol and a saturated hydrocarbon or a dialkyl ether. The antistatic layer of the obtained laminated foam sheet has specific morphology.
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公开(公告)号：US20210300005A1
公开(公告)日：2021-09-30
申请号：US17264725
申请日：2019-07-12
申请人： JSP CORPORATION
发明人： Shota TAKAGi , Akinobu HIRA
摘要： A laminated article includes a thermoplastic resin expanded beads molded layer A having a volume Va and a tensile modulus TMa which is 2 to 100 MPa, and a thermoplastic elastomer expanded beads molded layer B having a volume Vb and a tensile modulus TMb which is 0.05 MPa or more and less than 2 MPa, the layers A and B being laminated and bonded to each other. Va:Vb is 90:10 to 50:50 and TMb/TMa is 0.025 or less.
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公开(公告)号：US20210253819A1
公开(公告)日：2021-08-19
申请号：US17171732
申请日：2021-02-09
申请人： JSP Corporation
发明人： Tatsuya HAYASHI
IPC分类号： C08J9/18
摘要： Polyamide-based resin expanded beads having a crystallite size of more than 8 nm as measured by X-ray diffraction method are provided.
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公开(公告)号：US20210130600A1
公开(公告)日：2021-05-06
申请号：US16638806
申请日：2018-07-18
申请人： JSP CORPORATION
发明人： Ryosuke ITAGAKI , Mitsuhiro AKIYAMA
摘要： A resin sheet of the present invention is a checker glass-like resin sheet made of a transparent thermoplastic resin, and includes a plurality of sectional arch-shaped elongated protrusions extending in one direction are regularly arranged in rows on, one surface of the resin sheet; and a plurality of sectional arch-shaped elongated protrusions extending in a direction perpendicular to the protrusions arranged on the one surface are regularly arranged in rows, on another surface of the resin sheet, in which an arithmetic average waviness (Wa) at a vertex of the protrusion in a direction in which the protrusion extends is 20 μm or less on both surfaces of the resin sheet. Accordingly, there is provided a resin sheet that can be used as an alternative to checker glass and has a certain degree of visibility from a short distance while having a shielding property from a long distance.
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公开(公告)号：US10814594B2
公开(公告)日：2020-10-27
申请号：US15082547
申请日：2016-03-28
申请人： JSP CORPORATION
发明人： Takeshi Aoki , Takashi Nishimoto , Ryohei Takeuchi
摘要： A laminated foam interleaf sheet for being interposed between glass plates, having a foam layer of a polyethylene-based resin, and an antistatic layer which is laminated on each of both sides of the foam layer and contains a polyethylene-based resin, a polystyrene-based resin and a polymeric antistatic agent, the laminated foam interleaf sheet having a surface roughness Ra of 30 μm or less.
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公开(公告)号：US10807507B2
公开(公告)日：2020-10-20
申请号：US16484264
申请日：2018-02-06
申请人： JSP CORPORATION
摘要： 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 expanded bead article has two or more lightening parts in an area from a center portion as seen in a front-back direction to a rear side. A through or non-through slit is provided in a continuous part between the lightening parts or an area in front of the continuous part over a distance of 100 mm or less along a vehicle-width direction of the expanded bead article. The slit is closed at both longitudinal ends.
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公开(公告)号：US10787555B2
公开(公告)日：2020-09-29
申请号：US16337690
申请日：2017-10-02
申请人： JSP Corporation
发明人： Shota Takagi , Masaharu Oikawa
摘要： 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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公开(公告)号：US20200094451A1
公开(公告)日：2020-03-26
申请号：US16469009
申请日：2017-12-21
申请人： JSP CORPORATION
发明人： Hiroki KAWAKAMI , Tomoo TOKIWA
摘要： 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
申请人： JSP Corporation
摘要： 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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