2780 



Chapter 23 



CHIPS 





.9^ 



c,\^ 



t:t~ 



REFINER 



FIBERS 



(J 



TUBE DRYER 



a 



D 



CHIPS 



\ 



REFINER 



FIBERS 



WAX 



RESIN - - 



TUBE DRYER 



I I I I I I I I I 



BLENDER 



FORMER 



a 



L) 



Figure 23-26. — Schematic of dry-process fiberboard plants. (Top) Hardboard plant 

 showing addition of phenolic resin prior to admitting fiber to tube dryer. (Bottom) 

 Medium-density fiberboard plant showing addition of resin in a short-retention 

 blender after fibers exit tube dryer. (Drawing from Suchsland and Woodson 1985.) 



