Preferably, just as the preform 38 is fully expanded within the cavity 44, {HEAD ~ the anvil} 48 is moved to {TAIL ~ its fully extended second position} to fully form the pocket 16 
is moved to
Preferably , just as the preform 38 is fully expanded within the cavity 44 , { HEAD ~ the anvil } 48 is moved to { TAIL ~ its fully extended second position } to fully form the pocket 16
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH