an additive product in {HEAD ~ said chamber} for adding to {TAIL ~ said container} after at least part of said membrane is severed 
for adding to
an additive product in { HEAD ~ said chamber } for adding to { TAIL ~ said container } after at least part of said membrane is severed
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH