Patent ID: 6443357
Filing Date: 2002-09-03
Classification: B65D

Abstract:
A packaging container comprising:(a) a pair of seal portions; (b) a plurality of rectangular side-surface panel portions of the same size and forming a tube having a circumferential wall right polygonal in cross-section: (c) a pair of end-surface panel portions disposed between one of said seal portions and said side-surface panel portions and forming a right polygonal end-surface portion, in cooperation with an intermediate portion of said one seal portion, closing one end of said tube, one of said end-surface portions having a weakened rupturable portion; (d) flap portions projecting, together with an end portion of said one seal portion, from said end-surface panel portions, each of said flap portions being bent onto one of said side-surface panel portions and being welded to said one side-surface panel portion; and (e) a pair of folding portions respectively connecting each one of said flap portions to two of said side-surface panel portions contiguous with a third side-surface panel portion therebetween.