Wood Veneer is refer to a process where thin slices of wood (usually thinner than 3mm) is glued onto core panels to produce flat panels such as doors, tops and panels for cabinets, parquet floors and parts of furniture.
Over 90 per cent, of the world’s plywood output being of wood veneer, due to following advantages,
-high uniform strength- wood is 25-45 times stronger along the grain than across the grain. Crossing te grain in adjacent sheets =thus tends to equalize the strength in al directions.
-freedom form shrinking, swelling and wrapping- solid wood exhibits considerable movement across the grain but generally negligible shrinkage or swelling in a longitudinal direction. The balanced construction of a plywood panel with the grain direction of adjacent veneers at right angles tends to equalize stresses, thus reducing shrinkage, swelling and waping.
-Non-splitting qualities- solid wood splits fairly readily along the grain. Plywood, by virtue of the crossed laminations, can be nailed or screwed near the edges without damage from splitting.
-Availability of relatively large sizes- Sawn timber can be obtained in fairly long lengths but only in relatively narrow widths. Plywood, on the other hand, is sold in sizes up to 6 ft x 25 ft. and by the scarf jointing of small sheets up to 6ft x 40 ft; 6 ft x 3 ft. is the most common size, the large flat sheets offer many advantages when compared with solid timber.
-Economical and effective utilization of figured wood- Twenty or more sheets of veneer can be sliced from 1 inch of solid wood. When glued to a core cheaper material a high grade panel is produced. This procedure thus effects distin ...