PRECOATED METAL SHEET

• Main Authors: HIROYASU FURUKAWA, MICHIYASU TAKAHASHI, IKUYA INOUE
• Format: Patent
• Language: English
• Published: 28.06.2022
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

This precoated metal sheet has a plated metal sheet, a primer layer formed on a surface of the plated metal sheet, and an upper layer film formed on a surface of the primer layer; in which the primer layer includes a binder resin and pigment particles including a vanadium compound and a magnesium compound, and when a region of a cross section of the primer layer within 1.0 ?min the film thickness direction from an interface between the plated metal sheet and the primer layer is observed by EPMA mapping, a region in which a detected concentration of a vanadium element is less than 0.6% is not continuously present for 2.0 ?m or more in a direction perpendicular to the film thickness direction, and a region in which a detected concentration of a magnesium element is less than 3.0% is not continuously present for 2.0 ?m or more in the direction perpendicular to the film thickness direction. FIG. 2B