公开(公告)号：US20180029334A1

公开(公告)日：2018-02-01

申请号：US15553027

申请日：2016-03-31

Applicant: JFE STEEL CORPORATION

Inventor： Norihiko NAKAMURA ,  Junichi KITAGAWA ,  Hiroki NAKAMARU ,  Yoichiro YAMANAKA

IPC: B32B15/09 ,  B65D25/34 ,  B65D25/14 ,  B32B15/18 ,  B65D1/12

CPC classification number: B32B15/09 ,  B29C48/154 ,  B29C48/21 ,  B29C48/30 ,  B29C48/305 ,  B32B1/02 ,  B32B7/00 ,  B32B7/02 ,  B32B15/08 ,  B32B15/18 ,  B32B15/20 ,  B32B27/36 ,  B32B2250/03 ,  B32B2250/04 ,  B32B2250/05 ,  B32B2255/06 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2270/00 ,  B32B2307/30 ,  B32B2307/40 ,  B32B2307/412 ,  B32B2307/702 ,  B32B2439/00 ,  B32B2439/66 ,  B32B2439/70 ,  B65D1/09 ,  B65D1/12 ,  B65D1/28 ,  B65D25/14 ,  B65D25/34 ,  B65D25/36 ,  B65D65/40 ,  C21D9/46

Abstract: A lower layer in contact with a metal sheet of a laminated resin layer contains 90 mol % or more of terephthalic acid in the polycarboxylic acid component and 30 to 50 mol % of ethylene glycol, 50 to 70 mol % of 1,4-butanediol, and 10 mol % or less of other polyol components in the polyol component, and a main layer and an upper layer of the laminated resin layer include polyester containing 90 mol % or more of terephthalic acid in the polycarboxylic acid component and 90 mol % or more of 1,4-butanediol in the polyol component, has a total thickness of 3 to 25 μm, and has a ratio (I011/I100) of peak intensity (I011) observed in a range of 2θ=15.5 degrees to 17.0 degrees to peak intensity (I100) observed in a range of 2θ=22.5 degrees to 24.0 degrees in X-ray analysis in a range of 0.2 to 5.0.

公开(公告)号：US20170266924A1

公开(公告)日：2017-09-21

申请号：US15532443

申请日：2015-12-08

Applicant: JFE STEEL CORPORATION

Inventor： Norihiko NAKAMURA ,  Yoichiro YAMANAKA ,  Junichi KITAGAWA ,  Hiroki NAKAMURA ,  Hiroshi KUBO ,  Yusuke NAKAGAWA

IPC: B32B15/09 ,  B65D1/16 ,  B32B27/08 ,  B32B27/36

CPC classification number: B32B15/09 ,  B32B15/08 ,  B32B15/18 ,  B32B15/20 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36 ,  B32B2250/03 ,  B32B2250/244 ,  B32B2255/06 ,  B32B2255/205 ,  B32B2270/00 ,  B32B2307/00 ,  B32B2307/30 ,  B32B2307/308 ,  B32B2307/31 ,  B32B2307/704 ,  B32B2367/00 ,  B32B2435/00 ,  B32B2435/02 ,  B32B2439/66 ,  B65D1/12 ,  B65D1/16 ,  B65D1/165 ,  B65D17/00 ,  B65D17/02 ,  B65D17/08 ,  B65D25/14 ,  B65D25/34 ,  B65D43/02 ,  B65D65/42 ,  C08L67/00 ,  C08L67/02 ,  C08L67/03 ,  C08L2205/02 ,  C08L2205/025 ,  Y10T428/31681 ,  Y10T428/31786

Abstract: A resin-coated metal sheet for can lids includes a metal sheet coated with thermoplastic resin films on both surfaces and formed into a can lid. A thermoplastic resin film A based on polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) is heat-fused on a surface of the metal sheet serving as an exterior surface of the can lid, and a thermoplastic resin film B based on polyethylene terephthalate (PET) is heat-fused on a surface of the metal sheet serving as an interior surface of the can lid. A composition ratio (wt %) of PBT/PET in the thermoplastic resin film A on the exterior surface is (PBT/PET)=(40/60) to (80/20), and the thermoplastic resin film B on the interior surface includes 95 mol % or more of PET.

公开(公告)号：US20240068107A1

公开(公告)日：2024-02-29

申请号：US18256988

申请日：2021-11-29

Applicant: JFE STEEL CORPORATION

Inventor： Takashi UENO ,  Yoichiro YAMANAKA ,  Yoshitsugu SUZUKI ,  Masanari TOMOZAWA ,  Haruo NAKAMICHI ,  Takashi KAWANO

IPC: C23C28/00 ,  C21D9/46 ,  C23C2/08 ,  C23C2/40 ,  C25D3/06 ,  C25D5/12

CPC classification number: C23C28/345 ,  C21D9/46 ,  C23C2/08 ,  C23C2/40 ,  C23C28/32 ,  C25D3/06 ,  C25D5/12 ,  C23C2222/10

Abstract: It is provided a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent sulfide staining resistance and coating secondary adhesion. It is a surface-treated steel sheet having: a Sn plating layer; a metallic Cr layer disposed on the Sn plating layer; and a Cr oxide layer disposed on the metallic Cr layer, on at least one surface of a steel sheet, and the surface-treated steel sheet has a water contact angle of 50° or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface to Cr of 5% or less.

公开(公告)号：US20200149179A1

公开(公告)日：2020-05-14

申请号：US16619234

申请日：2018-06-05

Applicant: JFE STEEL CORPORATION

Inventor： Yusuke NAKAGAWA ,  Takeshi SUZUKI ,  Mikito SUTO ,  Katsumi KOJIMA ,  Yuya BABA ,  Hanyou SOU ,  Yoichiro YAMANAKA ,  Shunsuke TOKUI

IPC: C25D11/38 ,  C25D7/00 ,  C23C28/00 ,  C25D5/18 ,  C25D5/16

Abstract: A steel sheet for cans which exhibits excellent weldability; and a production method therefore include the surface of a steel sheet in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The deposited amount of the chromium metal layer is 50-200 mg/m2. The deposited amount of the hydrous chromium oxide layer in terms of chromium is 3-30 mg/m2. The chromium metal layer includes: a base part having a thickness of 7.0 nm or higher; and granular protrusions which are on the base part, have a maximum grain size of 200 nm or lower, and have a number density per unit area of at least 30 per μm2.

公开(公告)号：US20240035182A1

公开(公告)日：2024-02-01

申请号：US18256968

申请日：2021-11-29

Applicant: JFE STEEL CORPORATION

Inventor： Takashi UENO ,  Yoichiro YAMANAKA ,  Yoshitsugu SUZUKI ,  Masanari TOMOZAWA ,  Haruo NAKAMICHI ,  Takashi KAWANO

IPC: C25D3/06 ,  C25D3/10 ,  C25D5/36 ,  C25D11/38

CPC classification number: C25D3/06 ,  C25D3/10 ,  C25D5/36 ,  C25D11/38

Abstract: It is provided a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent film wet adhesion and coating secondary adhesion as well as high film corrosion resistance and coating corrosion resistance. It is a surface-treated steel sheet having: a steel sheet; a metallic Cr layer disposed on at least one surface of the steel sheet; and a Cr oxide layer disposed on the metallic Cr layer, and the surface-treated steel sheet has a water contact angle of 50° or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface to Cr of 5% or less.

公开(公告)号：US20220205124A1

公开(公告)日：2022-06-30

申请号：US17594502

申请日：2020-02-18

Applicant: JFE STEEL CORPORATION

Inventor： Takashi UENO ,  Mikito SUTO ,  Yoichiro YAMANAKA

IPC: C25D9/08 ,  C25D9/06 ,  C23C28/00

Abstract: A method of producing a surface-treated steel sheet, comprising: subjecting a steel sheet having a Sn coating or plating layer to an anodic electrolytic treatment in an alkaline aqueous solution to form a Sn oxide layer; and then subjecting the steel sheet to a cathodic electrolytic treatment in an aqueous solution containing zirconium ions to form a layer containing zirconium oxide, wherein the Sn coating or plating layer has a Sn coating weight of 0.1 g/m2 to 20.0 g/m2, the Sn oxide layer has, at a point in time when the Sn oxide layer is formed, a reduction current peak within a potential range of −800 mV to −600 mV and an electric quantity of a reduction current in the potential range of 1.5 mC/cm2 to 10.0 mC/cm2, and the layer containing zirconium oxide has a Zr coating weight of 0.1 mg/m2 to 50.0 mg/m2.

公开(公告)号：US20210324532A1

公开(公告)日：2021-10-21

申请号：US17271967

申请日：2019-06-07

Applicant: JFE STEEL CORPORATION

Inventor： Yusuke NAKAGAWA ,  Hanyou SOU ,  Yoichiro YAMANAKA

IPC: C25D5/14 ,  C25D3/08 ,  C25D3/12 ,  C25D5/50 ,  C25D5/36 ,  C25D11/38 ,  C25D9/10 ,  C25D9/06

Abstract: A steel sheet for can making and methods for manufacturing the same. The steel sheet includes, in order from a steel sheet side, an iron-nickel diffusion layer, a metallic chromium layer, and a chromium oxide layer. The iron-nickel diffusion layer has a nickel coating weight of 50 mg/m2 to 500 mg/m2 per surface of the steel sheet and a thickness of 0.060 μm to 0.500 μm per surface of the steel sheet. The metallic chromium layer includes a flat-like metallic chromium sublayer and a granular metallic chromium sublayer placed on a surface of the flat-like metallic chromium sublayer. The total chromium coating weight of both sublayers per surface of the steel sheet is 60 mg/m2 to 200 mg/m2. The chromium oxide layer has a chromium coating weight 3 mg/m2 to 10 mg/m2 per surface of the steel sheet in terms of metallic chromium.

公开(公告)号：US20180065339A1

公开(公告)日：2018-03-08

申请号：US15560011

申请日：2016-03-25

Applicant: JFE STEEL CORPORATION

Inventor： Yoichiro YAMANAKA ,  Junichi KITAGAWA ,  Hiroki NAKAMARU ,  Norihiko NAKAMURA

IPC: B32B15/09 ,  C21D9/46 ,  B32B15/18 ,  B32B37/20 ,  C25D3/10 ,  B65D1/16 ,  B65D25/14

Abstract: A resin-coated metal sheet for containers that has excellent content releasability is provided. The resin-coated metal sheet includes a resin layer (A) and a resin layer (B). The resin layer (A) has a multilayer structure and is disposed on a side which, after the metal sheet is formed into a container, becomes the inner side of the container. The resin layer (B) is disposed on a side that becomes the outer side of the container. The resin layer (A) contains polyester as a main component and includes an uppermost resin layer (a1). A Raman band intensity ratio (I2968/I3085) on the surface of the resin layer (a1) is 0.6 to 0.9. The resin layer (B) includes polyester (I) composed mainly of polyethylene terephthalate and a polyester (II) composed mainly of polybutylene terephthalate. A Raman band intensity ratio on the surface of the resin layer (B) is 0.8 to 1.0.