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