An air blast from nozzle 52 passes through {HEAD ~ the stretched fabric} to impinge upon {TAIL ~ the surface} of the underlying sheet to hold it in place as the gripped top sheet is removed 
to impinge upon
An air blast from nozzle 52 passes through { HEAD ~ the stretched fabric } to impinge upon { TAIL ~ the surface } of the underlying sheet to hold it in place as the gripped top sheet is removed
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH