ADHESIVE COMPOSITION FOR PLYWOOD, METHOD FOR PRODUCING PLYWOOD, AND PLYWOOD

摘要

PLYWOOD IS PRODUCED BY APPLYING, ON A VENEER, AN ADHESIVE COMPOSITION FOR PLYWOOD PREPARED BY ADDING 1 TO 15 PARTS BY MASS OF ACACIA BARK POWDER, 25 TO 70 PARTS BY MASS OF AN INORGANIC FILLER AND 10 TO 50 PARTS BY MASS OF WATER RELATIVE TO 100 PARTS BY MASS OF A RESOLTYPE PHENOLIC RESIN AQUEOUS SOLUTION HAVING A RESIN CONTENT OF 40 TO 50% BY MASS, LAMINATING A PLURALITY OF THE VENEERS AND APPLYING PRESSURE AND HEAT THERETO. DUE TO THIS, IT IS POSSIBLE TO PROVIDE AN ADHESIVE COMPOSITION FOR PLYWOOD WHICH CAN BE PREVENTED FROM INCREASE IN VISCOSITY AFTER PREPARATION THEREOF AND WHICH CAN SUPPRESS BLOWOUT PHENOMENA UPON PRODUCTION OF PLYWOOD NOT ONLY WHEN VENEERS HAVING A NORMAL OR LOW MOISTURE CONTENT ARE USED BUT ALSO EVEN WHEN VENEERS HAVING A HIGH MOISTURE CONTENT ARE USED AND SUPPRESS DRYOUT PROBLEMS; A METHOD FOR PRODUCING PLYWOOD USING THE ADHESIVE COMPOSITION FOR PLYWOOD; AND PLYWOOD PRODUCED BY THE METHOD.