{HEAD ~ Use} of {TAIL ~ the disk} substantially eliminates the possibility of shred migration into the second open end region during sealing thereof, thus assuring a positive seal at the envelopes tip portion 
of
{ HEAD ~ Use } of { TAIL ~ the disk } substantially eliminates the possibility of shred migration into the second open end region during sealing thereof , thus assuring a positive seal at the envelopes tip portion
HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH