Process for manufacturing a composite wooden board

Claim 1

A PROCESS OF MANUFACTURING A COMPOSITE WOODEN BOARD, COMPRISING THE STEPS OF MAKING COARSE WOOD PIECES FROM A WOODEN MATERIAL; APPLYING 3.5% OF A BINDER SUBSTANCE TO SAID COARSE WOOD PIECES SO AS TO OBTAIN SLIGHTLY HUMID BINDER TREATED COARSE WOOD PIECES; CUTTING OTHER WOOD MATERIAL TO SUBSTANTIALLY FLAT SHAVINGS; APPLYING 14% OF A BINDER SUBSTANCE TO SAID FLAT WOOD SHAVINGS SO AS TO OBTAIN HUMID BINDER TREATED FLAT WOOD SHAVINGS; FORMING A FIRST HUMID SURFACE LAYER OF SAID HUMID BINDER TREATED FLAT WOOD SHAVINGS; SUPERIMPOSING ON SAID FIRST SURFACE LAYER A SLIGHTLY HUMID POROUS CORE LAYER OF SAID SLIGHTLY HUMID BINDER TREATED COARSE WOOD PIECES; SUPERIMPOSING UPON SAID POROUS CORE LAYER A SECOND HUMID SURFACE LAYER OF SAID HUMID BINDER TREATED FLAT WOOD SHAVINGS; AND APPLYING A PRESSURE OF SUBSTANTIALLY 10 KILOGRAM PER SQUARE CM. AT A TEMPERATURE OF SUBSTANTIALLY 120* C. TO SAID SUPERIMPOSED LAYERS SO AS TO CAUSE A FIRM ADHESION OF SAID BINDER TREATED FLAT WOOD SHAVINGS IN SAID SURFACE LAYERS AND OF SAID BINDER TREATED COARSE WOOD PIECES IN SAID POROUS CORE LAYER TO ONE ANOTHER AND TO CAUSE ALSO A FIRM ADHESION OF THE LAYERS THEMSELVES TO ONE ANOTHER, WHILE PERMITTING THE STEAM FORMED BY APPLYING HEAT TO ESCAPE INTO SAID POROUS CORE LAYER OF COARSE WOOD PIECES, THEREBY OBTAINING A COMPOSITE WOODEN BOARD COMPOSED OF A POROUS CORE LAYER AND TWO SUBSTANTIALLY WATER-IMPERVIOUS SURFACE LAYERS FIRMLY ADHERING TO SAID POROUS CORE LAYER AND HAVING A HIGH TENSILE STRENGTH.