COATED METAL SHEET

• Main Authors: OWA KATSUMI, SATO KATSUAKI
• Format: Patent
• Language: English; Japanese
• Published: 29.08.2019
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

To provide a coated metal sheet having a fluorine resin layer, and having high workability even after being stored for a long period of time.SOLUTION: The coated metal sheet having a metal sheet and a fluorine resin layer is provided. The fluorine resin layer includes a polyvinylidene fluoride-based fluorine resin, an acrylic resin, and a pigment particle 120, the polyvinylidene fluoride-based fluorine resin has a crystallinity degree of an α type crystal (Icα/Ia) represented by a ratio of intensity of an α type crystal (2θ=18.4°), Icα to intensity of amorphous halo (2θ=18°), Ia, in wide-angle X ray diffraction, of less than 2.5, and the crystallinity degree of the α type crystal (Icα/Ia) is larger than crystallinity degree of the β type crystal (Icβ/Ia) represented by a ratio of intensity of the β type crystal (2θ=20.5°), Icβ to intensity of amorphous halo (2θ=18°), Ia.SELECTED DRAWING: Figure 1 【課題】フッ素樹脂層を有する塗装金属板であって、長期保管後でも高い加工性を有する塗装金属板を提供すること。【解決手段】金属板と、フッ素樹脂層と、を有する塗装金属板に関する。フッ素樹脂層は、ポリフッ化ビニリデン系フッ素樹脂と、アクリル樹脂と、顔料粒子１２０と、を含み、ポリフッ化ビニリデン系フッ素樹脂は、広角Ｘ線回折における非晶質ハーロー（２θ＝１８°）の強度Ｉａに対するα型結晶（２θ＝１８．４°）の強度Ｉｃαの比で表されるα型結晶の結晶化度（Ｉｃα／Ｉａ）は、２．５未満であり、かつ、α型結晶の結晶化度（Ｉｃα／Ｉａ）は、非晶質ハーロー（２θ＝１８°）の強度Ｉａに対するβ型結晶（２θ＝２０．５°）の強度Ｉｃβの比で表されるβ型結晶の結晶化度（Ｉｃβ／Ｉａ）よりも大きい。【選択図】図１