The heating devices 26, 27, 28, 29 for {HEAD ~ the drying} of {TAIL ~ the web} can be of any development 
of
The heating devices 26 , 27 , 28 , 29 for { HEAD ~ the drying } of { TAIL ~ the web } can be of any development
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH