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US 2004/0170856 A1Published application
Laminated wood products and process for making the same
OwnerBill Arndell, Herbert R. Gillisinventors
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Abstract
Process for the manufacture of adhesive laminated wood products and laminated wood products produced thereby. The process is especially well suited to the production of laminated veneer lumber using fast curing one component polyisocyanate adhesives. The process provides for greater economy of resin usage by employing a ribbon coating apparatus.
Claims20
A process for the manufacture of laminated wood composites comprising the steps of:
- (a) providing a plurality of wood veneers;
- (b) providing an organic polyisocyanate laminating adhesive;
- (c) providing a ribbon coating apparatus;
- (d) providing a pressing means;
- (e) conveying at least one of the plurality of wood veneers through the ribbon coating apparatus and applying a layer of the organic polyisocyanate laminating adhesive in liquid form to a face of the at least one wood veneer in a single pass through the ribbon coating apparatus to obtain a liquid polyisocyanate coated veneer;
- (f) placing at least one of the liquid polyisocyanate coated veneers in contact with at least one other veneer to form a loose stack of veneers;
- (g) pressing the loose stack of veneers in the pressing means under conditions suitable to cause the polyisocyanate laminating adhesive to at least partially cure to form an adhesive bonded wood laminate;
- and
- (h) removing the adhesive bonded wood laminate from the pressing means.
6 more elements
Dependencies are inferred from the claim text.