By these measures, a more economical pack can be provided, employing {HEAD ~ a thinner grade} of {TAIL ~ material} for the inner liner, without sacrificing the degree of protection afforded to the article within the pack 
By these measures , a more economical pack can be provided , employing { HEAD ~ a thinner grade } of { TAIL ~ material } for the inner liner , without sacrificing the degree of protection afforded to the article within the pack
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH