The process 1, wherein {HEAD ~ the tubular film} is subjected to {TAIL ~ biaxial orientation} before reaching nip rolls 
is subjected to
The process 1 , wherein { HEAD ~ the tubular film } is subjected to { TAIL ~ biaxial orientation } before reaching nip rolls
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH