By unbounded is meant that the adhesive clusters do not include {TAIL ~ any applied linear boundary} or perimeter of {HEAD ~ adhesive} defining the cluster area 
By unbounded is meant that the adhesive clusters do not include { TAIL ~ any applied linear boundary } or perimeter of { HEAD ~ adhesive } defining the cluster area
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH