Liquid container with straw opening means

Claim 1

In a liquid carrying paperboard container coated overall with a thermoplastic material that serves as a barrier and becomes an adhesive when subjected to heat, and including a tubular body having four sides including first, second, third, fourth and fifth panels, wherein one side includes overlapped and sealed first and fifth panels, the improvement comprising means for forming a straw opening in said tubular body including tear strip means formed on the outer first panel along a pair of spaced apart lines beginning at the edge thereof adjacent the underlying fifth panel and extending laterally a distance just beyond the intermediate edge portion of the underlying panel, and including a tab formed as an extension of said tear strip, with the inner ends of said pair of spaced apart lines defining a flexible hinge therebetween when said tear strip is peeled from said underlying panel, and a block score forming a depression on one of said fourth and fifth panels aligned with said tab and larger in area than the area of said tab such that said tab is sealed less tightly thereto under heat and pressure than other sealed surfaces due to the depth of said depression and, hence, readily releasable therefrom without disturbing any portion of the underlying portion of the panel bearing said depression.