The two plies are then adhered together to form {HEAD ~ a liquid tight seal} between {TAIL ~ the two plies} 
between
The two plies are then adhered together to form { HEAD ~ a liquid tight seal } between { TAIL ~ the two plies }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL