According to {HEAD ~ the construction} of {TAIL ~ this invention}, the barrier layer material is first extruded over a die cut opening in one of the roof forming panels of the blank from which the container is formed 
of
According to { HEAD ~ the construction } of { TAIL ~ this invention } , the barrier layer material is first extruded over a die cut opening in one of the roof forming panels of the blank from which the container is formed
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