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