{TAIL ~ The container} is made from two flat panels of heat sealable film, each shaped as a trapezium; or from {HEAD ~ a single web} folded double 
{ TAIL ~ The container } is made from two flat panels of heat sealable film , each shaped as a trapezium ; or from { HEAD ~ a single web } folded double
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH