公开(公告)号：US20200001760A1

公开(公告)日：2020-01-02

申请号：US16484264

申请日：2018-02-06

Applicant: JSP CORPORATION

Inventor： Keiichi HASHIMOTO ,  Katsunori HISAMATSU ,  Atsuo TAKAYAMA

IPC: B60N2/70 ,  B29C44/12 ,  B29C44/34

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 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.

公开(公告)号：US10465057B2

公开(公告)日：2019-11-05

申请号：US15559551

申请日：2016-03-23

Applicant: JSP CORPORATION

Inventor： Takeshi Aoki ,  Takashi Nishimoto

IPC: B29C44/24 ,  C08J9/228 ,  B29C48/18 ,  B32B5/20 ,  B32B27/18 ,  C03B40/033 ,  C08L23/06

Abstract: A method for producing a polyethylene-based resin laminated foam sheet according to the present invention is a method for producing a polyethylene-based resin laminated foam sheet 1 with thickness of 0.05 to 0.5 mm in which an anti-static layer is adhered by lamination on at least one surface of the foam layer, including: a step of performing coextrusion and foaming of a laminate which is obtained by combining and laminating, in a die 10, a melt resin composition 6 for forming a foam layer obtained by kneading a low density polyethylene A and a physical foaming agent and a melt resin composition 9 for forming an anti-static layer obtained by kneading a low density polyethylene B and an anti-static agent, wherein the anti-static agent is a polymeric anti-static agent C which has a melting point to allow a melting point difference in the range of from −10° C. to +10° C. compared to that of the low density polyethylene B and has a melt flow rate of 10 g/10 minutes or more.

公开(公告)号：US20190283287A1

公开(公告)日：2019-09-19

申请号：US16342418

申请日：2017-10-10

Applicant: JSP Corporation

Inventor： Yoshihisa OGAKI

IPC: B29C44/44 ,  B29C44/02 ,  B29C44/60 ,  B29C67/20 ,  C08J9/232 ,  C08J9/16

Abstract: 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.

公开(公告)号：US20190270861A1

公开(公告)日：2019-09-05

申请号：US16344891

申请日：2017-11-02

Applicant: JSP Corporation

Inventor： Shota TAKAGI ,  Masaharu OIKAWA

IPC: C08J9/232 ,  C08J9/18 ,  C08J3/20

Abstract: The present invention is concerned with expanded beads of a block copolymer of a polyethylene block and an ethylene/α-olefin copolymer block, wherein a xylene insoluble fraction (A) of the expanded beads by a hot xylene extraction method is 10 to 70% by weight, and a ratio (A/B) of the xylene insoluble fraction (A) to a xylene insoluble fraction (B) of the expanded beads by a hot xylene extraction method when divided into two equal parts and measured is 1.0 to 1.1, and is able to provide expanded beads with excellent in-mold moldability and an expanded beads molded article with excellent fusion bondability and restorability.

公开(公告)号：US20190263993A1

公开(公告)日：2019-08-29

申请号：US16333479

申请日：2017-09-15

Applicant: JSP Corporation

Inventor： Shota TAKAGI ,  Masaharu OIKAWA

IPC: C08J9/18 ,  B29C44/44 ,  B29C44/34

Abstract: The present invention provides expanded beads comprising a crosslinked multi-block copolymer containing an ethylene block and an ethylene-α-olefin copolymer block, having an apparent density of 40 to 300 g/L, a gel fraction of 30 to 70% by weight by a hot xylene extraction method, an average cell diameter (a) of 50 to 180 μm, and an average surface layer thickness (b) of 3 to 27 μm, and the expanded beads are excellent in in-mold moldability, and can produce an expanded beads molded article being excellent in tensile characteristics in a well balanced manner.

公开(公告)号：US10391911B2

公开(公告)日：2019-08-27

申请号：US15750854

申请日：2016-07-22

Applicant: JSP CORPORATION

Inventor： Atsuo Takayama ,  Keiichi Hashimoto ,  Motoaki Ueguri

IPC: B60N2/90 ,  B32B5/32 ,  B32B5/20 ,  B60N2/64 ,  B29C67/20 ,  B29C44/04 ,  B29C44/06 ,  B29C44/34 ,  B29C44/44 ,  B29K23/00 ,  B29K75/00 ,  B29L31/00

Abstract: A composite seat core material is configured from: a base portion that is formed by fusing thermoplastic resin foamed particles having no through-hole to each other; and a connecting portion that is provided on the upper side of the base portion, and is formed by fusing foamed particles having through-holes to each other, the connecting portion having interconnected void spaces that communicates with the outside. With the outer surface of the connection portion partially exposed at the top surface of the composite seat core material, the base portion and the connecting portion are fixed and integrated with each other. A seat member is formed by laminating a polyurethane foam pad on the top surface of the composite seat core material.

公开(公告)号：US20190084279A1

公开(公告)日：2019-03-21

申请号：US16140637

申请日：2018-09-25

Applicant: JSP CORPORATION

Inventor： Takeshi AOKI ,  Takashi NISHIMOTO ,  Mikidai FUJITA ,  Ryohei TAKEUCHI

IPC: B32B27/06 ,  B32B27/18 ,  B32B5/18 ,  C08L23/04 ,  C08L23/02 ,  B65D57/00 ,  B32B27/30 ,  B65D65/40 ,  B32B27/32 ,  B32B25/14 ,  B32B5/20 ,  B65D81/107 ,  B65D85/48 ,  C08J9/14

Abstract: A multi-layer foam sheet with an apparent density of 30 to 300 kg/m3 and a thickness of 0.05 to 2 mm, including a foam layer containing a polyethylene-based resin, and an antistatic layer fusion-laminated by coextrusion on each of both sides of the foam layer. The antistatic layer has a basis weight of 1 to 10 g/m2 and contains a polyethylene-based resin, a polystyrene-based resin, a styrenic elastomer, and a polymeric antistatic agent, with the polystyrene-based resin being contained in the antistatic layer in an amount of 15 to 70% by weight.

公开(公告)号：US20180319304A1

公开(公告)日：2018-11-08

申请号：US15750854

申请日：2016-07-22

Applicant: JSP CORPORATION

Inventor： Atsuo TAKAYAMA ,  Keiichi HASHIMOTO ,  Motoaki UEGURI

IPC: B60N2/90 ,  B32B5/20 ,  B32B5/32 ,  B60N2/64

CPC classification number: B60N2/90 ,  B29C44/04 ,  B29C44/06 ,  B29C44/3426 ,  B29C44/445 ,  B29C67/205 ,  B29K2023/12 ,  B29K2075/00 ,  B29L2031/771 ,  B32B5/20 ,  B32B5/32 ,  B32B2266/0278 ,  B32B2605/00 ,  B60N2/64

Abstract: A composite seat core material is configured from: a base portion that is formed by fusing thermoplastic resin foamed particles having no through-hole to each other; and a connecting portion that is provided on the upper side of the base portion, and is formed by fusing foamed particles having through-holes to each other, the connecting portion having interconnected void spaces that communicates with the outside. With the outer surface of the connection portion partially exposed at the top surface of the composite seat core material, the base portion and the connecting portion are fixed and integrated with each other. A seat member is formed by laminating a polyurethane foam pad on the top surface of the composite seat core material.

公开(公告)号：US20180127559A1

公开(公告)日：2018-05-10

申请号：US15572873

申请日：2016-03-28

Applicant: JSP Corporation

Inventor： Shota TAKAGI ,  Masaharu OIKAWA

IPC: C08J9/18 ,  C08J9/224 ,  C08J9/228 ,  C08F297/08

CPC classification number: C08J9/18 ,  C08F210/16 ,  C08F297/086 ,  C08J9/122 ,  C08J9/224 ,  C08J9/228 ,  C08J9/232 ,  C08J2201/026 ,  C08J2203/06 ,  C08J2205/06 ,  C08J2207/00 ,  C08J2323/08 ,  C08J2353/00 ,  C08L53/00

Abstract: An object of the present invention is to provide expanded beads capable of producing an expanded beads molded article that is excellent in in-mold moldability and is excellent with good balance in lightweight property, flexibility, repulsion, restorability, and tensile characteristics, and an expanded beads molded article using the expanded beads. For achieving the object, the present invention provides crosslinked expanded beads produced by crosslinking and expanding particles containing a multi-block copolymer containing a polyethylene block and an ethylene-α-olefin copolymer block, the multi-block copolymer having a melt flow rate of from 2 to 10 g/10 min at 190° C. and a load of 2.16 kg, and a Shore A hardness of from 65 to 90 measured according to ASTM D2240, the crosslinked expanded beads having a gel fraction of from 30 to 60% by a hot xylene extraction method. The expanded beads molded article of the present invention is produced by subjecting the crosslinked expanded beads of the present invention, to in-mold molding. The expanded beads molded article of the present invention may have an apparent density of from 40 to 150 g/L.

公开(公告)号：US20180030233A1

公开(公告)日：2018-02-01

申请号：US15554842

申请日：2016-03-01

Applicant: JSP CORPORATION

Inventor： Yohta KUWADA ,  Mitsushi MURATA

IPC: C08J9/20 ,  C08J9/14 ,  C08J9/232

CPC classification number: C08J9/20 ,  B29C44/3461 ,  B29K2033/12 ,  B29K2105/0085 ,  B29K2105/041 ,  B29K2995/0063 ,  C08J9/141 ,  C08J9/16 ,  C08J9/232 ,  C08J2203/14 ,  C08J2205/044 ,  C08J2333/12

Abstract: Provided are an expanded acrylic resin beads molded article that produces little soot during burning, and has good castabilities and high strength, and an expandable acrylic resin bead and an expanded acrylic resin bead for producing the expanded acrylic resin beads molded article. The expandable acrylic resin bead includes a physical blowing agent and a copolymer. The copolymer is composed of a methyl methacrylate component, an acrylic acid ester component, and a styrene component in a predetermined proportion. The copolymer constitutes a base resin of the expandable acrylic resin beads. The water content of the expandable acrylic resin bead is a 0.5 mass % or less. The expanded acrylic resin bead includes the copolymer and has a bulk density and cell diameters within predetermined ranges, and the expanded acrylic resin beads molded article is produced by in-mold molding of plural expanded beads.