End of the trough is connected to exhaustor means which suck {TAIL ~ the fibre fleece} towards {HEAD ~ injector}  
End of the trough is connected to exhaustor means which suck { TAIL ~ the fibre fleece } towards { HEAD ~ injector }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH