A method of producing a nonwoven fiber glass mat that contains discrete areas which are of {HEAD ~ different construction} than the remainder of {TAIL ~ the mat} 
A method of producing a nonwoven fiber glass mat that contains discrete areas which are of { HEAD ~ different construction } than the remainder of { TAIL ~ the mat }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL