Surfacing laminated sheets, plywood, wallboards, asbestos sheets and the like

摘要

523,277. Ornamenting. LEWENSTEIN, A. S. Dec. 30, 1938, No. 37821. [Class 93] [Also in Groups VIII and V] In making decorative sheet material by surfacing sheets such as plywood, asbestos, composition board, combinations of plywood and asbestos or composition board and metal with paper, fabric or wood veneer impregnated with thermo-hardening synthetic resins such as ureaformaldehyde resins using heat and pressure a dull or rough finish is obtained by pressing between sheets of fabric or hard composition board instead of the usual polished metal plates. Synthetic resin laminated sheets may be similarly finished on one or both surfaces to facilitate adhesion by synthetic resins to a foundation sheet.