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US 5,366,803 AGranted
Coated metal plate with easily controlled gloss and reduced heat blocking during lamination
AssigneeMitsubishi Kasei America, Inc.
InventorsTokuaki Nakazawa, Joseph J. Rudisi, Osamu Suzuki
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Abstract
Metal sheets having a layer of a cured polyvinylidene fluoride paint on the metal surface and a layer of a cured fluorinated ethylene vinyl ether paint on the polyvinylidene fluoride paint exhibit excellent weathering properties, have a gloss of 25 to 80%, and may be bent to a sharp angle without cracking of the coating. Such sheets are particularly useful in the preparation of metal-resin composite laminates, because they do not experience thermal blocking during the lamination step.
Claims21
A coated metal sheet, comprising:
- (a) a metal substrate;
- (b) a layer of a cured polyvinylidene fluoride paint produced by heat curing a polyvinylidene fluoride paint, wherein said polyvinylidene fluoride paint comprises a polyvinylidene fluoride, a hardening agent, and a pigment, coated on a surface of said metal substrate;
- and
- (c) a layer of a cured fluorinated ethylene vinyl ether paint produced by heat curing a fluorinated ethylene vinyl ether paint, wherein said fluorinated ethylene vinyl ether paint comprises a fluorinated ethylene vinyl ether and a curing agent, coated on said layer of cured polyvinylidene fluoride paint (b).
1 more element
A metal-resin composite laminate, comprising:
- (1) a resin sheet;
- and
- (2) a coated metal sheet laminated on a first surface of said resin sheet;
- wherein said coated metal sheet comprises:
- (a) a metal substrate;
- (b) a layer of a cured polyvinylidene fluoride paint produced by heat curing a polyvinylidene fluoride paint, wherein said polyvinylidene fluoride paint comprises a polyvinylidene fluoride, a hardening agent, and a pigment, coated on the surface of said metal substrate opposite the resin sheet;
- and
- (c) a layer of a cured fluorinated ethylene vinyl ether paint produced by heat curing a fluorinated ethylene vinyl ether paint, wherein said fluorinated ethylene vinyl ether paint comprises a fluorinated ethylene vinyl ether and a curing agent, coated on said layer of cured polyvinylidene fluoride paint (b).
5 more elements
Dependencies are inferred from the claim text.