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