Patent ID: 7485286

Claim:
A method for producing an oriented strand board comprising: (i) contacting flakes of wood with MDI (methylene diphenyl diisocyanate); (ii) orienting, in alternate lengthwise and crosswise layers, the flakes of wood to provide a blanket of oriented flakes; and (iii) curing the MDI by exposing the MDI to at least one of an elevated temperature, an elevated pressure, and radiant energy; for a sufficient period of time; wherein the flakes of wood are independently contacted with the pesticide, fungicide, or combination thereof, at a flaker outfeed, on a flake conveyor belt, at a drop-out to green bins, at an entry to green bins, inside a green bins, at a green bin outfeed, at a screw auger pan to dryer, at a airlock separation, at a dryer infeed, at a 1st pass of 3 pass dryer, at a dryer outfeed, at a primary cyclone, at an airlock separation, at a reversing conveyor to dry bin or fire dump or conveyor to screens, on the inside of a dry bin, on a dry bin conveyor, at a scales, on a conveyor, inside a blender, at a forming line heads, at a forming line, at a caul plate or screen, at a steam injection in press, or any combination thereof.