ADHESIVE COMPOSITION USED IN STICKING THIN SLICED VENEER

摘要

PURPOSE:To obtain an adhesive used in sticking thin sliced veneer, which is free from problems of exudation and reduction in productivity, by adding inorganic fine powder to a mixed paste obtained by adding a filler to an aqueous resin adhesive. CONSTITUTION:To a mixed paste prepared by adding a filler, such as wheat flour or soybean powder, to an aqueous resin adhesive such as a urea resin, a melamine resin, a vinyl acetate emulsion, or an SBR latex, is added 0.1-10% of inorganic fine powder, particle diameter =0.1mu, such as fine silicic acid powder, light calcium carbonate, clay or magnesium carbonate. As said inorganic fine powder, fine silicic acid powder, particle diameter =0.05mu, which, in a small amount, shows a thickening effect, is particularly preferred. The amount of the inorganic fine powder added depends on the particle diameter, oil absorptivity, etc. When the fine silicic acid powder, particle diameter =0.05mu, is used, the amount added is preferably 0.1- 10%, based on the mixed paste, and the addition of more than 10% does not bring about an additional effect, but adversely effects the adhesiveness.