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US 7,732,057 B2Granted
Formaldehyde-free paper backed veneer products and methods of making the same
AssigneeNeenah Paper, Inc.
InventorsBruce G. Stokes, E. Craig Lyerly
Life of this patent
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Abstract
A paper backed veneer having a veneer laminated to a paper backing sheet saturated with a formaldehyde-free binder composition is generally disclosed. The formaldehyde-free binder composition includes a curable latex polymer and a crosslinking agent. The latex polymer can include functionalized groups, such as carboxyl groups, to aid curing. The crosslinking agent can be an epoxy resin. Also, a method of making paper backed veneers is generally disclosed.
Claims18
A paper backed veneer comprising:
- a veneer defining an inner surface;
- a paper backing sheet laminated to said inner surface of said veneer, said paper backing sheet comprising a cellulosic nonwoven web saturated with a formaldehyde-free binder composition, wherein said binder composition comprises a first curable latex polymer and a first crosslinking agent, and a formaldehyde-free adhesive coating positioned between the paper backing sheet and the inner surface of the veneer, wherein the formaldehyde-free adhesive coating comprises a second curable latex polymer and a second crosslinking agent.
A laminated veneer product comprising
- a veneer defining an inner surface, wherein said veneer has a thickness of less than about 10 millimeters;
- a paper backing sheet adhered to said inner surface of said veneer via a formaldehyde-free adhesive coating, said paper backing sheet comprising a cellulosic nonwoven web saturated with a formaldehyde-free binder composition, wherein said formaldehyde-free binder composition comprises a curable latex polymer and an epoxy resin present in a ratio of said curable latex polymer to said epoxy resin of from about 10:1 to about 1:2 by weight, and wherein said curable latex polymer comprises carboxyl groups, wherein the formaldehyde-free binder composition is saturated into the cellulosic nonwoven web at an add-on level of from about 10% to about 90%, and wherein the formaldehyde-free adhesive coating is present at a coating add-on level of from about 20% to about 150%;
- and
- a base substrate adhered to an opposite surface of said paper backing sheet.
1 more element
Dependencies are inferred from the claim text.