The membrane is sealed to the spigot on an outer face of the spigot which is configured so that {TAIL ~ the membrane} will be clamped in position during {HEAD ~ piercing} of the membrane by a cutter 
The membrane is sealed to the spigot on an outer face of the spigot which is configured so that { TAIL ~ the membrane } will be clamped in position during { HEAD ~ piercing } of the membrane by a cutter
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 OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH