{TAIL ~ The insert} is pushed forward into the open jacket which is pushed away from the opening blade permitting {HEAD ~ closure} by gravity 
{ TAIL ~ The insert } is pushed forward into the open jacket which is pushed away from the opening blade permitting { HEAD ~ closure } by gravity
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH