RESIN METAL COMPOSITE PANEL

WIPO Patent Application WO/2023/195467

A1

[Problem] To inexpensively manufacture a lightweight and highly rigid resin metal composite panel that, as a laminated panel for building materials and floor and wall materials of vehicles and ships, excels in corrosion resistance and exhibits high rigidity. [Solution] A resin metal composite panel obtained by pouring and foaming a hard urethane resin between two covering materials comprising metal plates, and molding the result. Each covering material has a thermoplastic resin layer of a specific thickness on an outer surface side of the panel. The surface tension of the inner surface side to be adhered to a core resin layer is 50 mN/m or greater, and each covering material is a single-sided film-laminated steel plate with a plate thickness of 0.1 mm or greater, or a single-sided film-laminated aluminum plate with a plate thickness of 0.24 mm or greater, having a layer comprising a specific adherence amount of an inorganic hydrated oxide and an inorganic oxide. A hard foamed urethane resin of the core layer has a thickness of 3 mm or greater and has a dynamic vertical elastic modulus measured at 80ºC and 1 Hz of 100 MPa or greater, and the density of the hard foamed urethane resin after foaming is within a specific range.

KADOWAKI NOBUO (JP)
PARK MIYEONG (JP)
MIZUTANI TOMOHIRO (JP)
HARA TOMOYA (JP)
TAJIMA YUTA (JP)

PCT/JP2023/013941

October 12, 2023

April 04, 2023

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NIPPON STEEL CORP (JP)

B32B15/08; B32B5/18; B32B27/40; E04F15/02; E04F15/06

JP2011005725A	2011-01-13
JPH10226010A	1998-08-25
JPH10231580A	1998-09-02
JPS6319242A	1988-01-27
JPH08336922A	1996-12-24
JPH1029258A	1998-02-03

HAGIWARA, Yasushi et al. (JP)

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