Engineered panel composed of several wood veneer sheets placed at right angles to one another or veneer sheets placed across a lumber, mineral, or oriented strand board core. Bonded by high pressure and waterproof or resistant adhesive.
Uses for plywood
Construction- wherever strength is important as it is resistant to checking and spliting
Decorative- Wall paneling, Cabinet work, and furniture.
Made mostly from softwood veneers. Rarely hardwood veneers.
Center veneers are usually of lower quality or different species. Exterior veneers are higher quality.
Rotary Cut Veneer
Tree is debarked and cut into log-shaped blocks and peeled by knife in long peels that are 1/10 in. to 3/16 in. thick.
Veneers used for decorative plywood are sometimes sliced. Very small amount of softwood plywood is manufactured of sliced veneer.
PS 1 Product Standard 1
Construction plywood should comply with Product Standard 1. This is the grading rules for construction plywood and the accepted bond, panel construction, dimensional tolerance, and workmanship requirements. Also includes the procedures for testing, grading, labeling, and identifying plywood.