A plug is used in {TAIL ~ the thermoforming process} to contact the sheet and position {HEAD ~ the sheet} within a die 
A plug is used in { TAIL ~ the thermoforming process } to contact the sheet and position { HEAD ~ the sheet } within a die
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH