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