METHOD OF IMPREGNATING VARNISH INTO BASE MATERIAL FOR LAMINATED PLATE

摘要

PURPOSE:To improve varnish impregnation property and to eliminate a need of high-pressure forming at the time of forming by a method wherein varnish heated in a spray chamber is impregnated into a base material for laminated plate by sprays so as to expel out air contained in the basic material. CONSTITUTION:Varnish (e.g., obtained by adding a solvent such as acetone or stylene to phenol resin, epoxy resin, unsaturated polyester resin or so) is heated in a spray chamber 2 and impregnated into a base material 1 for laminated plate made of (non-woven) fabric such as glass fibers or polyester fibers using sprays 3. EFFECT:Laminated plate free of warp and twist can be attained.