초록

The use of a fully-hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin coating containing finely divided metallic powder in a decorative laminate eliminates the necessity for thin metallic foils without thereby imparting any deleterious effects to the laminate itself.

대표청구항 ▼

A heat and pressure consolidated laminate consisting essentially of, in superimposed relationship, (a) a core layer consisting of a self-supporting substrate; (b) a surface coating of a hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin containing a finely divided metallic powder or p

A heat and pressure consolidated laminate consisting essentially of, in superimposed relationship, (a) a core layer consisting of a self-supporting substrate; (b) a surface coating of a hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin containing a finely divided metallic powder or pigment wherein the hydrolyzed polyvinyl alcohol has a degree of hydrolysis equal to or greater than about 99.0 percent of the acetate groups and wherein the surface coating weight is from about 60 to 140 grams per square meter, the amount of hydrolyzed polyvinyl alcohol in the surface coating is from about 5 to 30 percent by weight of the total weight of the melamine-formaldehyde reaction porduct solids and the amount of metallic powder is from about 2 to 8 percent by weight of the total weight of the melamine-formaldehyde reaction product solids. A method of producing a heat and pressure consolidated laminate which comprises: (a) positioning a laminate assembly between press plates, said laminate assembly consisting essentially of, in superimposed relationship, (1) a core layer consisting of a self-supporting substrate; and (2) a surface coating of a hydrolyzed polyvinyl alcohol (PVA) having a degree of hydrolysis equal to or greater than about 99.0 percent of the acetate groups modified melamine-formaldehyde resin containing finely divided metallic powders or pigment wherein the surface coating weight is from about 60 to 140 grams per square meter and the amount of hydrolyzed PVA 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; (b) applying sufficient temperature and pressure to the laminate assembly to cure the resins impregnating the laminate assembly, thereby providing the laminate; and (c) recovering the resultant laminate.