A lid sheet is heat sealed to the container sheet over {HEAD ~ the thermoformed containers} so as to produce {TAIL ~ a pair} of spaced apart, annular bead heat seals 
to produce
A lid sheet is heat sealed to the container sheet over { HEAD ~ the thermoformed containers } so as to produce { TAIL ~ a pair } of spaced apart , annular bead heat seals
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH