{HEAD ~ The workpiece} may be a single piece of material or a plurality of pieces of material which are bonded together under {TAIL ~ the influence} of heat and pressure 
{ HEAD ~ The workpiece } may be a single piece of material or a plurality of pieces of material which are bonded together under { TAIL ~ the influence } of heat and pressure
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH