The drum is in the form of a pair of closely spaced discs having {HEAD ~ perimetral}, cylindrically contoured sealing surfaces for {TAIL ~ support} and, in cooperation with driven metal belts, transport of a web being formed into dunnage units 
The drum is in the form of a pair of closely spaced discs having { HEAD ~ perimetral } , cylindrically contoured sealing surfaces for { TAIL ~ support } and , in cooperation with driven metal belts , transport of a web being formed into dunnage units
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH