Process of manufacturing a fibrous sheet covered plywood

Claim 1

THE IMPROVEMENT IN THE PROCESS OF MANUFACTURING A FIBROUS SHEET COVERED PLYWOOD, WHICH COMPRISES THE STEPS OF FIRST DISTRIBUTING THROUGHOUT THE BODY OF A PAPER WEB HAVING A BASIS WEIGHT WITHIN THE RANGE OF FROM ABOUT 60 TO 200 POUNDS PER 3000 SQUARE FEET CONDENSABLE RESIN IN AN AMOUNT SUFFICIENT TO PRODUCE A RESIN CONTENT OF FROM 20 TO 50 PER CENT OF THE WEIGHT OF THE SHEET WHEN FULLY DRIED, DRYING THE RESIN-CONTAINING WEB TO A MOISTURE CONTENT OF FROM ABOUT 10 TO 20 PER CENT, THEN CALENDERING THE DRIED, RESIN-CONTAINING WEB TO SUBSTANTIALLY REDUCE THE THICKNESS THEREOF, APPLYING TO BOTH FACES OF THE WEB A SURFACE COATING OF CONDENSABLE RESIN, DRYING THE COATED WEB TO ELIMINATE VOLATILE MATERIAL FROM SAID WEB AND SAID COATING, THEN PLACING A LAYER OF AT LEAST ONE PLY OF SAID WEB OVER ONE FACE OF A VENEER WHICH IS TO BECOME AN OUTER PLY OF THE FINISHED PLYWOOD PANEL AND SUBJECTING SAID WEB AND VENEER TO SUFFICIENT HEAT AND PRESSURE TO CONDENSE SAID RESIN, THEREBY TO PROVIDE SAID VENEER WITH AN OUTER, PROTECTIVE, COVER SHEET OF COMPOSITE RESIN AND FIBER, THE OUTER FACE OF SAID COVER SHEET BEING COMPOSED SUBSTANTIALLY WHOLLY OF RESIN, AND THE INNER FACE OF SAID COVER SHEET BEING BONDED TO THE FACE OF THE ADJACENT VENEER BY RESIN OBTAINED FROM SAID WEB.