| 摘要 |
<p>PURPOSE:To obtain a resin-impregnated paper overlaid plywood of improved quality by using a single board thermally adhered beforehand with overlaid resin-impregnated papers to manufacture a plywood. CONSTITUTION:A single board which becomes a facing of plywood is thermally adhered with overlaid resin-impregnated resin under applied pressure. Following this procedure, this single board is made into a plywood according to plywood manufacturing process. The aforementioned single board means a thin board obtained by peeling off lumber thinly whic is a material for plywood. Wood used for the manufacture of single boards is various kinds of broad-leaved trees and needle-leaved trees. As adhesives, phenol resin, cresol resin, urea resin, etc. and starched are used.</p> |
