removing individual base sheets from the stack, a strip of the coating material remaining on the interior edge of {HEAD ~ each removed base sheet} to form {TAIL ~ an edge coated gasket} 
to form
removing individual base sheets from the stack , a strip of the coating material remaining on the interior edge of { HEAD ~ each removed base sheet } to form { TAIL ~ an edge coated gasket }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL