公开(公告)号：US11897230B2

公开(公告)日：2024-02-13

申请号：US16081493

申请日：2017-03-03

Applicant: Kobe Steel, Ltd.

Inventor： Yasuo Hirano ,  Takeshi Watase ,  Tetsuya Yamamoto

IPC: B32B15/085 ,  B32B7/12 ,  B32B15/18 ,  C09J123/26 ,  C08K3/36 ,  C09D7/61 ,  C09J7/28 ,  C23C22/68 ,  C23C22/82 ,  C09D5/08 ,  C08K5/544

CPC classification number: B32B15/085 ,  B32B7/12 ,  B32B15/18 ,  C08K3/36 ,  C08K5/544 ,  C09D5/084 ,  C09D7/61 ,  C09J7/28 ,  C09J123/26 ,  C23C22/68 ,  C23C22/82 ,  B32B2255/06 ,  B32B2255/26 ,  B32B2262/101 ,  B32B2264/1021 ,  B32B2307/732

Abstract: The present invention relates to a surface-treated metal sheet for polyolefin resin bonding having a metal substrate and an adhesive layer laminated on at least one surface of the metal substrate with a chemical conversion coating film interposed between the metal substrate and the adhesive layer. This surface-treated metal sheet for polyolefin resin bonding is characterized in that a coating liquid for forming the chemical conversion coating film contains an acid-modified polyolefin resin, a colloidal silica, and a silane coupling agent; a coating amount of the chemical conversion coating film is 0.05 to 3 g/m2 in terms of dry mass; the adhesive layer contains an acid-modified polyolefin resin; and the adhesive layer has a thickness of 5 to 100 μm.

公开(公告)号：US10982330B2

公开(公告)日：2021-04-20

申请号：US16088716

申请日：2017-03-07

Applicant: Kobe Steel, Ltd.

Inventor： Yasuo Hirano ,  Takeshi Watase ,  Tetsuya Yamamoto

IPC: B32B7/12 ,  B32B15/085 ,  C23C22/48 ,  C23C22/60 ,  B05D7/14 ,  C09D123/08 ,  C09J133/02 ,  B29C45/14 ,  B29K705/12 ,  B29L9/00

Abstract: According to one aspect of the present invention, there is provided a chemical conversion coated metal sheet for non-condensed thermoplastic resin bonding, the chemical conversion coated metal sheet including a metal substrate and a chemical conversion coating film disposed on at least one surface of the metal substrate, in which the chemical conversion coating film is obtained by coating the metal substrate with a coating liquid that contains an ethylene-acrylic acid copolymer, colloidal silica, and a silane coupling agent. The ethylene-acrylic acid copolymer has an acrylic acid content of 10 mass % or more and a melt flow rate of 80 g/10 min or less.

公开(公告)号：US10399300B2

公开(公告)日：2019-09-03

申请号：US15026168

申请日：2014-10-30

Applicant: Kobe Steel, Ltd.

Inventor： Yasuo Hirano ,  Takeshi Watase ,  Tatsuhiko Iwa

IPC: B32B15/08 ,  B32B15/095 ,  B32B15/085 ,  B32B15/088 ,  B32B15/20 ,  B32B7/12 ,  B32B27/20 ,  B32B27/32 ,  B32B27/34 ,  B32B27/40 ,  C09J7/28 ,  C09J7/35 ,  C08L75/04 ,  C08K3/36 ,  B29C45/14 ,  B32B27/30 ,  B32B15/18 ,  B29K705/00

Abstract: Provided are: a surface-treated metal sheet that is useful when integrating a molded plastic (resin) article and a metal sheet during injection molding; and a metal sheet-resin composite molded article in which the metal sheet and a resin molded article are integrated. The surface-treated metal sheet consists of a laminate having a metal substrate, a chemical conversion coating film and an adhesive layer in order, and is characterized in that the chemical conversion coating film contains colloidal silica and a thermosetting resin.

公开(公告)号：US12059868B2

公开(公告)日：2024-08-13

申请号：US16488297

申请日：2018-02-21

Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

Inventor： Yasuo Hirano ,  Tatsuhiko Iwa ,  Tetsuya Yamamoto ,  Takeshi Watase

IPC: B32B15/085 ,  B32B15/092 ,  C09J7/24 ,  C09J163/00

CPC classification number: B32B15/085 ,  B32B15/092 ,  B32B2255/06 ,  B32B2323/00 ,  C09J7/241 ,  C09J163/00

Abstract: A surface-treated metal sheet for polyolefin adhesion is provided with a metal sheet, a first layer provided on at least one surface of the metal sheet, and a second layer provided on the first layer, wherein the first layer containing an epoxy resin and a blocked isocyanate, the second layer containing an acid-modified polyolefin resin, the thickness of the first layer being 15 to 40 μm, and the thickness of the second layer being 4 to 30 μm.

公开(公告)号：US11642871B2

公开(公告)日：2023-05-09

申请号：US16498020

申请日：2018-02-21

Applicant: Kobe Steel, Ltd.

Inventor： Yasuo Hirano ,  Tatsuhiko Iwa ,  Tetsuya Yamamoto ,  Takeshi Watase

IPC: B32B15/085 ,  B29C45/14 ,  B32B7/12 ,  B32B27/32 ,  C09J151/06 ,  B29C45/26

CPC classification number: B32B15/085 ,  B29C45/14 ,  B32B7/12 ,  B32B27/32 ,  C09J151/06 ,  B29C45/26 ,  B32B2250/02 ,  B32B2255/06 ,  B32B2255/26 ,  B32B2307/538 ,  C09J151/06 ,  C08L51/06

Abstract: A surface-treated metal sheet for adhesion to polyolefin includes a metal sheet, and a resin layer provided on at least one surface of the metal sheet. The resin layer contains an acid- modified polyolefin, the acid-modified polyolefin contains a first acid-modified polyolefin having an acid value of 5 mgKOH/g or less, particularly 4 to 5 mgKOH/g, and a second acid- modified polyolefin having an acid value of 20 mgKOH/g or more and a melting point of higher than 90° C., and a difference between a melting point of the first acid-modified polyolefin and the melting point of the second acid-modified polyolefin is 0° C. or more and less than 40° C. The resin layer has a surface roughness of 12 μm or less in terms of arithmetic average roughness Ra.