Patent ID: 8302846
Filing Date: 2012-11-06
Classification: B65D

Abstract:
1. A paper container having a gable roof and being formed of a board paper raw material having a top surface and a back surface laminated with thermoplastic resins, said paper container comprising: four body portion panels configured such that edge portions of the paper container are bonded with each other through a longitudinal-direction seal-panel so as to form a tubular body portion having a square section, wherein upper ends of the body portion panels are continuously provided with: wherein the pair of gable wall-forming panels is folded inside between the pair of gable roof-forming panels, wherein the exterior top seal panels and the interior top seal panels are heated and sealed with each other at a predetermined position so as to be hermetically sealed, to thereby form a top of the paper container, wherein a seal width on a non-opening side of a top seal portion is larger than a seal width on an opening side serving as the spout, the top seal portion being formed by heating and sealing the exterior top seal panels and the interior top seal panels with each other at the predetermined position, the seal width being downwardly enlarged from the opening side to the non-opening side; and wherein top-portion lateral-fold-lines serving as boundaries between the pair of gable roof-forming panels and an opposing pair of the body portion panels are downwardly tilted from the opening side to the non-opening side.