This disclosure pertains to {HEAD ~ machinery} for expanding and inserting {TAIL ~ empty flexible bags} into an open carton 
This disclosure pertains to { HEAD ~ machinery } for expanding and inserting { TAIL ~ empty flexible bags } into an open carton
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH