2794 



Chapter 23 



HOTPRESS 

 •DEWATERING PHASE 



W,=W2=W3 



Figure 23-35. — In manufacture of insulation board and S2S hardboard, dryer costs are 

 greatly affected by efficiency of the wet press (top). In SIS manufacture, however, 

 dewatering during hot pressing is little affected by efficiency of the wet press (bot- 

 tom). (Drawing from Suchsland and Woodson 1985.) 



