3.5 



^ 3.0 



2.5 



Board 



Thickness (inch) 



Material 

 Core Face 





[o-tl 



0.02 Ring Flaked 0. 02 x 0. 5 x 2 inch 





o-l 

 □-1 



1 inch Pulp Chips Disk Flakes 



Planer Shavings 



2.0 



1.0 



0.5 



9 — ' RANDOM FACE 



ALINED FACE -PARALLEL 



20 30 40 50 60 70 

 FACE WEIGHT (PERCENT OF TOTAL WEIGHT) 



90 



100 



Figure 10. — Linear expansion of three-layer flakeboards after 

 ovendry and vacuum pressure soak (Geimer and others 1975). 



Figure 11. — Three-layer random 

 surface and alined surface 

 phenolic flakeboard constructions. 



3-LAYER 

 FACE FLAKES 

 ORIENTED 



17 



