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