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