3546 



Chapter 28 



0.025-inch thick, linear expansion in the direction of flake alignment is 0. 15 to 

 0.20 percent when cycled between 50- and 90-percent relative humidity. Such 

 an oriented core, when assembled with face and back in a 'A-inch-thick panel 

 will have linear expansion of 0. 15 to 0.28 percent across the 4-foot width of the 

 panel. This low value is needed in wall panels. 



H^^l 



^^^ 



GREEN L_J^^^=n 

 FLAKES n^^'^l 



DRYERS 



BLENDERS 



LOADER 



PRESS 



UNLOADER- 

 SEPARATOR- 



FORMER 



EDGE TRIM 

 END TRIM 

 GRADE LINE 



SORT LINE 



UNITIZER 



Figure 28-28. — Plan view of plant to make 150 million square feet annually, three-shift 

 basis, of 1/6-inch oriented flakeboard from hardwood. The hot press has 30 openings 

 and 4- by 8-foot platens. (Drawing after Briggs 1981.) 



