It specifically pertains to {TAIL ~ a mechanism} for cuffing an open end of {HEAD ~ a bag} about an open carton periphery 
It specifically pertains to { TAIL ~ a mechanism } for cuffing an open end of { HEAD ~ a bag } about an open carton periphery
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH