Method 4, wherein the intensity of the flames is made to depend on {HEAD ~ the distance} of the flames from {TAIL ~ the surface} of the nonwoven 
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Method 4 , wherein the intensity of the flames is made to depend on { HEAD ~ the distance } of the flames from { TAIL ~ the surface } of the nonwoven
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH