公开(公告)号：US12030702B2

公开(公告)日：2024-07-09

申请号：US17290453

申请日：2020-02-06

Applicant: NIPPON STEEL CORPORATION

Inventor： Nobuo Kadowaki ,  Kazushi Iwakiri ,  Tomohiro Mizutani ,  Satoshi Kato

IPC: B32B15/09 ,  B32B15/18 ,  B32B27/08 ,  B32B27/32 ,  B32B27/36 ,  B65D6/00 ,  B65D6/32 ,  B65D8/00 ,  B65D17/00 ,  C08L23/14

CPC classification number: B65D7/38 ,  B32B15/09 ,  B32B15/18 ,  B32B27/08 ,  B32B27/32 ,  B32B27/36 ,  B65D7/04 ,  B32B2270/00 ,  B32B2307/732 ,  B32B2439/66 ,  C08L23/14

Abstract: A can lid made of a resin laminate steel sheet for a resin-metal composite container, includes: a top sheet portion; and a curved portion located at an outer periphery of the top sheet portion, in which the resin laminate steel sheet includes a steel sheet, a thermoplastic polyester-based resin layer provided at a first surface of the steel sheet, a modified polypropylene-based resin layer provided at a second surface of the steel sheet, a polypropylene-based resin layer, and an ethylene-propylene copolymer resin layer, a melting point of the ethylene-propylene copolymer resin layer is 135° C. or higher and 150° C. or lower, a melting point of the thermoplastic polyester-based resin layer is higher than a melting point of the polypropylene-based resin layer by 40° C. or more, and a range of a proportion of the ethylene component in the ethylene-propylene copolymer in the ethylene-propylene copolymer resin layer is 1.0 mass % or more and 45.0 mass % or less.

公开(公告)号：US11473164B2

公开(公告)日：2022-10-18

申请号：US16981160

申请日：2019-03-19

Applicant: NIPPON STEEL CORPORATION

Inventor： Takuya Nishio ,  Kojiro Akiba ,  Yoshimasa Narita ,  Kotaro Ohno ,  Satoshi Kato ,  Masafumi Azuma

IPC: B32B15/01 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/38 ,  C22C38/32 ,  C22C38/22 ,  C22C38/14 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C23C2/40 ,  C22C38/04 ,  C22C38/24 ,  C23C2/06 ,  B32B15/04 ,  C23C30/00 ,  C23C28/02 ,  B32B15/18 ,  C23C2/28 ,  C23C28/00 ,  C22C38/18 ,  C22C38/48 ,  C22C38/26 ,  C22C38/28 ,  C22C38/44 ,  C22C38/54 ,  C22C38/50 ,  C22C38/12 ,  C22C38/46 ,  C21D1/19 ,  C21D1/22 ,  C21D1/76

Abstract: This high-strength cold-rolled steel sheet has a predetermined chemical composition, wherein a microstructure at a ¼ position of a sheet thickness from a surface includes predetermined ranges of volume percentages of tempered martensite, residual austenite, ferrite and bainite, and martensite, wherein a microstructure at a position 25 μm from the surface includes, predetermined ranges of volume percentage of ferrite and bainite, and martensite and tempered martensite, wherein in the position 25 μm from the surface, an average grain size of the martensite and the tempered martensite is 5.0 μm or less, a tensile strength is 1,310 MPa or more, and a uniform elongation is 5.0% or more, and R/t is 5.0 or less, the R/t being a ratio of a limit bend radius R in 90° V-bending to a sheet thickness t.

公开(公告)号：US11697539B2

公开(公告)日：2023-07-11

申请号：US16764290

申请日：2018-12-07

Applicant: NIPPON STEEL CORPORATION

Inventor： Nobuo Kadowaki ,  Kazushi Iwakiri ,  Tomohiro Mizutani ,  Satoshi Kato

IPC: B32B15/085 ,  B32B15/09 ,  B32B15/20 ,  B32B27/32 ,  B32B27/36 ,  B32B7/12 ,  B65D17/34 ,  B65D77/20

CPC classification number: B65D77/2024 ,  B32B7/12 ,  B32B15/085 ,  B32B15/09 ,  B32B15/20 ,  B32B27/32 ,  B32B27/36 ,  B65D17/34 ,  B32B2435/02 ,  B32B2439/66 ,  B65D2517/0013 ,  B65D2577/205

Abstract: A heat sealed lid includes: a resin laminate aluminum foil; and a first seamed side frame portion and a second seamed side frame portion formed of a resin film laminate metal sheet, in which the resin film laminate metal sheet includes a metal sheet, a laminate film formed on one surface of the metal sheet, and a second resin film formed on the other surface of the metal sheet and containing a thermoplastic polyester resin, the laminate film includes an adhesion layer containing a polypropylene-based resin and a polyethylene-based resin and a base layer containing a modified polypropylene-based resin, an amount of the polyethylene-based resin in the adhesion layer is 1.0 mass % or more and 45.0 mass % or less of the resins of the adhesion layer, the melting point of the second resin film is higher than the melting point of the adhesion layer by 40° C. or more and is higher than the heating temperature of a heat sealing tool, the thickness of the adhesion layer is 1.0 μm or more and 15.0 μm or less, and the thickness of the base layer is 1.0 μm or more and 18.0 μm or less.

公开(公告)号：US11878488B2

公开(公告)日：2024-01-23

申请号：US17791696

申请日：2020-03-23

Applicant: NIPPON STEEL CORPORATION

Inventor： Akihiro Sengoku ,  Kojiro Akiba ,  Satoshi Kato

IPC: B32B15/01 ,  C22C18/00 ,  C23C28/00 ,  B21D22/20 ,  C25D5/36 ,  C23C2/06 ,  C23C30/00 ,  B21D22/02 ,  B32B15/18 ,  B32B15/04 ,  C23C28/02 ,  C23C2/30 ,  C23C2/28 ,  C23C2/04 ,  C23C2/26

CPC classification number: B32B15/013 ,  B21D22/022 ,  B21D22/20 ,  B32B15/011 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C22C18/00 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/285 ,  C23C2/30 ,  C23C28/023 ,  C23C28/025 ,  C23C28/321 ,  C23C28/3225 ,  C23C30/00 ,  C23C30/005 ,  C25D5/36 ,  Y10T428/12799 ,  Y10T428/12958 ,  Y10T428/12972

Abstract: A hot stamped component, includes: a base material; and a Zn-based plating layer provided in contact with the base material as an upper layer of the base material and containing Zn and Ni. A region of the Zn-based plating layer on a base material side is a Fe—Zn solid solution containing Ni, and two or more twins exist in 10 crystal grains of the Fe—Zn solid solution containing Ni adjacent to an interface between the base material and the Zn-based plating layer.