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US 4,374,886 AGranted
Color registered decorative laminates
AssigneeFormica Corporation
InventorRam S. Raghava
Life of this patent
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Abstract
The use of a pigmented, fully-hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin coating in color registered decorative laminates provides improved laminates exhibiting pleasing aesthetics.
Claims9
A heat and pressure laminate assembly consisting essentially of, in superimposed relationship,
- (a) a core layer comprised of a self-supporting substrate;
- (b) a resin impregnated print layer consisting of an opaque alpha cellulose paper sheet;
- (c) a pigmented surface coating of a hydrolyzed polyvinyl alcohol having a degree of hydrolysis equal to or greater than about 99.0 percent of the acetate groups modified melamine-formaldehyde resin wherein the surface coating weight is from about 0.5 to about 20.0 grams per square foot, the amount of fully hydrolyzed polyvinyl alcohol in the surface coating is from about 5 to about 30 percent by weight of the total weight of the melamine-formaldehyde reaction product solids and said pigmented surface coating has a flow sufficient to cause said pigmented surface coating to flow more than said resin impregnating the print layer;
- and
- (d) an embossing press plate having a surface with protuberant and valley areas capable of being impressed into the uppermost surface of said print layer and means for preventing the embossing press plate from sticking to the coated print sheet during lamination.
2 more elements
A heat-and-pressure consolidated laminate of registered embossment and color contrast comprising, in superimposed relationship,
- (a) a core layer comprised of a self-supporting substrate;
- (b) a resin impregnated print layer consisting of an alpha cellulose paper sheet;
- and
- (c) a pigmented surface coating of a hydrolyzed polyvinyl alcohol having a degree of hydrolysis equal to or greater than about 99.0 percent of the acetate groups modified melamine-formaldehyde resin wherein the surface coating weight is from about 0.5 to about 20.0 grams per square foot, the amount of hydrolyzed polyvinyl alcohol in the surface coating is from about 5 to about 30 percent by weight of the melamine-formaldehyde reaction product solids and the pigmented surface coating has a flow sufficient to cause said pigmented surface coating to flow more than said resin impregnating the print layer, and the surface of said laminate contains an embossment consisting of protuberances and valleys, each of which are of a different color.
1 more element
Dependencies are inferred from the claim text.