An untreated fabric is subjected to a sequential process which provides uniform permeability and greater flexibility and {TAIL ~ acid resistance} to {HEAD ~ the treated fabric} 
An untreated fabric is subjected to a sequential process which provides uniform permeability and greater flexibility and { TAIL ~ acid resistance } to { HEAD ~ the treated fabric }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD