2833 



PRESS TIME (SECONDS) 



1.000 



350 - 



30 



60 78 

 PRESS TIME 



93 

 (SECONDS) 



Figure 23-63. — Press cycles for Vs-inch-thick, dry-formed hardboard at press tempera- 

 ture of 428-466°F. (Top) Two-phase. (Bottom) Three-phase. (Drawing after Swiderski 

 1963.) 



