公开(公告)号：US20250136777A1

公开(公告)日：2025-05-01

申请号：US18835855

申请日：2023-02-02

Applicant: JSP CORPORATION

Inventor： Takumi SAKAMURA ,  Hajime OHTA

IPC: C08J9/232

Abstract: A molded article of expanded beads is obtained by mutual fusion-bonding of columnar crystalline thermoplastic resin expanded beads each having no through-hole. The molded article ratio of the molded article of crystalline thermoplastic resin expanded beads is 15 times or more and 90 times or less. The molded article of crystalline thermoplastic resin expanded beads has a closed cell content of 90% or more. The molded article of crystalline thermoplastic resin expanded beads has an open cell content of 2% or more and 12% or less.

公开(公告)号：US12275179B2

公开(公告)日：2025-04-15

申请号：US18019619

申请日：2021-08-06

Applicant: JSP CORPORATION

Inventor： Ryuichi Taniguchi ,  Takashi Nishimoto

IPC: B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29K25/00 ,  B29K105/00 ,  B29K105/04 ,  B29L7/00 ,  B32B27/06 ,  B32B27/08 ,  B32B27/18 ,  B32B27/32 ,  B65D81/02 ,  B65D81/03 ,  B65D85/48 ,  B65G49/06

Abstract: The multilayer foam sheet includes a polyethylene resin foam layer and a resin layer laminated on at least one of the two surfaces of the foam layer. The resin layer has a multilayer structure formed from a surface layer and an intermediate layer. Both the surface layer and the intermediate layer contain a polyethylene resin and a polymeric antistatic agent. The polymeric antistatic agent is contained in the intermediate layer at a proportion of 30-70 wt % (inclusive). The polymeric antistatic agent is contained in the surface layer at a proportion of at least 5 wt % to less than 30 wt %.

公开(公告)号：US20240209622A1

公开(公告)日：2024-06-27

申请号：US17909098

申请日：2021-03-03

Applicant: JSP CORPORATION ,  DENKA COMPANY LIMITED

Inventor： Kazuto TABARA ,  Hironori NAGASAKI ,  Kohei MIZUTA ,  Masanori MITSUMOTO ,  Yoshinori SHIMOJO ,  Hironobu KIKKAWA

IPC: E04B1/94 ,  B32B5/02 ,  B32B5/18 ,  B32B5/24 ,  C04B14/42 ,  C04B14/46 ,  C04B16/06 ,  C04B16/08 ,  C04B28/06 ,  C04B28/14 ,  C04B28/16 ,  C04B111/00 ,  C04B111/28

CPC classification number: E04B1/942 ,  B32B5/022 ,  B32B5/18 ,  B32B5/245 ,  C04B14/42 ,  C04B14/4625 ,  C04B14/4668 ,  C04B16/0633 ,  C04B16/08 ,  C04B28/065 ,  C04B28/141 ,  C04B28/16 ,  B32B2260/044 ,  B32B2262/0253 ,  B32B2262/105 ,  B32B2262/108 ,  B32B2266/0228 ,  B32B2307/304 ,  B32B2307/3065 ,  B32B2307/72 ,  B32B2607/00 ,  C04B2111/00629 ,  C04B2111/28 ,  C04B2201/20 ,  C04B2201/30

Abstract: A fireproof heat insulating board including a foamed resin molded body filled with a slurry, the foamed resin molded body having continuous voids, wherein the filled slurry forms a hydrate containing water of crystallization in an amount of 50 kg/m3 or more through hydration reaction after the filling, and at least a part of the surface of the board is reinforced with one or more inorganic fibers selected from the group consisting of a basalt fiber and a ceramic fiber.

公开(公告)号：US20240158593A1

公开(公告)日：2024-05-16

申请号：US18278657

申请日：2021-12-21

Applicant: JSP CORPORATION

Inventor： Tokunobu NOHARA ,  Yasutaka ODE

IPC: C08J9/00 ,  C08J9/18 ,  C08J9/224 ,  C08J9/232 ,  C08K5/3492

CPC classification number: C08J9/0028 ,  C08J9/18 ,  C08J9/224 ,  C08J9/232 ,  C08K5/34926 ,  C08J2203/22 ,  C08J2323/14

Abstract: A polypropylene-based resin expanded beads configured to include an NOR type hindered amine and has a surface on which a thermoplastic polymer layer is located, in which a blending ratio of the amine in the expanded beads is 0.03 wt % or more and 0.5 wt % or less, and a blending ratio of the amine in the thermoplastic polymer layer is less than the blending ratio of the amine in the expanded beads. Further, the method for producing the expanded beads includes a covering and foaming step, in which in the resin beads to be obtained in the covering step, a blending ratio of the amine in the resin beads is adjusted to be 0.03 wt % or more and 0.5 wt % or less, and a blending ratio of the amine in a thermoplastic polymer layer is adjusted to be lower than the blending ratio of the amine in the resin beads.

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

IPC: B32B5/18 ,  B32B27/06 ,  B32B27/32 ,  B32B27/40 ,  C08J9/228

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.

公开(公告)号：US11882940B2

公开(公告)日：2024-01-30

申请号：US17632911

申请日：2020-08-04

Applicant: JSP Corporation

Inventor： Seishiro Murata

IPC: A47C7/02 ,  A47C7/18 ,  A47C27/14

CPC classification number: A47C7/029 ,  A47C27/14

Abstract: A cushion body for sitting is provided which can offer good feeling of sitting even to many unspecified users of various body shapes and allow them to be seated more comfortably. A cushion body for sitting (1) includes: a base part (2) having a sitting surface (S1) formed of a curved surface that is curved concavely to support, from below, the buttocks of a seated person in a seated posture; and a pair of side supporting portions (3) each having a side supporting surface (S2) formed of a curved surface that is curved continuously from the sitting surface (S1) of the base part (2), where the pair of side supporting portions (3) project from sides of the base part (2) such that the side supporting portions (3) can be bent and deformed by a load applied to the side supporting surfaces (S2), so as to support both the left and right parts of the buttocks of the seated person in the seated posture.

公开(公告)号：US20240018325A1

公开(公告)日：2024-01-18

申请号：US18349308

申请日：2023-07-10

Applicant: JSP CORPORATION

Inventor： Takumi SAKAMURA ,  Hajime OHTA

IPC: C08J9/228 ,  C08L23/14

CPC classification number: C08J9/228 ,  C08L23/14 ,  C08J2201/034 ,  C08J2323/14 ,  C08J2423/14

Abstract: A thermoplastic resin expanded bead and a molded article composed of the thermoplastic resin expanded beads are provided. The expanded bead includes a foam layer containing a thermoplastic resin. The expanded bead has a columnar shape, and has two or more and eight or less through-holes penetrating in the axial direction thereof. A ratio Ct/A of a total cross-sectional area Ct of the through-holes to a cross-sectional area A of the expanded bead in a cut surface obtained by cutting the expanded bead along a plane perpendicular to the axial direction at the center in the axial direction is 0.02 or more and 0.15 or less.

公开(公告)号：US20240002623A1

公开(公告)日：2024-01-04

申请号：US18368441

申请日：2023-09-14

Applicant: JSP Corporation

Inventor： Shota TAKAGI ,  Masaharu OIKAWA

IPC: C08J9/232 ,  C08J9/18 ,  C08L53/00 ,  C08J9/228

CPC classification number: C08J9/232 ,  C08J9/18 ,  A43B13/04 ,  C08J9/228 ,  C08L53/00

Abstract: The present invention relates to an in-mold expanded beads molded article of expanded beads of an olefin thermoplastic elastomer, a cushion for shoe sole, and a method of producing expanded beads provided with through-holes and composed of a block copolymer of a polyethylene block and an ethylene/α-olefin copolymer block, and with respect to the in-mold expanded beads molded article of expanded beads of an olefin thermoplastic elastomer, a voidage of the expanded beads molded article is 5 to 40%; a density of the expanded beads molded article is 30 to 150 g/L; and a flexural modulus of the olefin thermoplastic elastomer that constitutes the expanded beads molded article is 10 to 100 MPa.

公开(公告)号：US11732101B2

公开(公告)日：2023-08-22

申请号：US17790997

申请日：2021-01-21

Applicant: JSP CORPORATION

Inventor： Tomohito Shimada ,  Hajime Ohta

IPC: B32B27/16 ,  C08J9/224 ,  C08J9/16 ,  B32B1/00 ,  B32B5/18 ,  B32B27/06 ,  B32B27/32 ,  C08J9/228

CPC classification number: C08J9/16 ,  B32B1/00 ,  B32B5/18 ,  B32B27/065 ,  B32B27/32 ,  C08J9/224 ,  C08J9/228 ,  B32B2266/025 ,  B32B2307/72 ,  C08J2323/12 ,  C08J2423/12

Abstract: An expanded bead having a through hole and including a foamed core layer which defines the through hole therein and which is constituted of a resin composition containing two kinds of polypropylene-based resins having different melting points, and a cover layer covering the foamed core layer and constituted of a polyolefin-based resin. The expanded bead gives a DSC curve in which an endothermic peak intrinsic to the resin composition and another endothermic peak on a higher temperature side thereof appear in a specific heat of fusion ratio. Molded articles include a multiplicity of the expanded beads.

公开(公告)号：US11273621B2

公开(公告)日：2022-03-15

申请号：US16731302

申请日：2019-12-31

Applicant: JSP CORPORATION

Inventor： Ryuichi Taniguchi ,  Hirotoshi Kakuta

IPC: B32B5/18 ,  B32B27/08 ,  B32B27/32

Abstract: A laminated foam sheet having a polyethylene resin foam layer and an outer layer laminated on each side of the foam layer, each outer layer being composed of an outermost surface polyethylene resin layer and an intermediate polyethylene resin layer which is positioned between the outermost surface layer and the foam layer and which contains a specific amount of a polymeric antistatic agent relative to the weight of the intermediate layer and to the basis weight of each of the intermediate layer and outermost surface layer.