After the preform is fully expanded to conform to the cavity 44, the anvil 48 is moved back along its linear path, and preferably in one motion back to its first position in response to {HEAD ~ the movement} of the piston 54 from {TAIL ~ its extended position} to its retracted position 
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After the preform is fully expanded to conform to the cavity 44 , the anvil 48 is moved back along its linear path , and preferably in one motion back to its first position in response to { HEAD ~ the movement } of the piston 54 from { TAIL ~ its extended position } to its retracted position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH