PRE-COATED METAL SHEET

PRE-COATED METAL SHEET A pre-coated metal sheet includes a metal sheet, an underlying coating film layer which does not contain chromate and which is provided on the metal sheet, a primer coating film layer which does not contain chromate and which is provided on the underlying coating film layer, a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Kunihiko TOSHIN, Hiroyasu FURUKAWA, Kohei UEDA, Tomoaki HOSOKAWA
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PRE-COATED METAL SHEET A pre-coated metal sheet includes a metal sheet, an underlying coating film layer which does not contain chromate and which is provided on the metal sheet, a primer coating film layer which does not contain chromate and which is provided on the underlying coating film layer, and a top coating film layer which is provided on the primer coating film layer, in which a fracture critical elongation rate of the coating film layer which combines the primer coating film layer and the top coating film layer is 10% or more and 25% or less, a glass transition point temperature of the primer coating film layer is more than 50C to 100C or less, the top coating film layer includes a resin component and the resin component includes an acrylic resin or a polyester-modified acrylic resin, and, when the pre-coated metal sheet is subjected to 2T close contact bending, there are a total of 5 or more and 30 or less cracks having a width of 0.1 mm or less in the top coating film layer in a range centered on the vertex section of the bend and having a length of 1 mm in a direction orthogonal to the bending direction.