Patent ID: 9592945
Date: 2017-03-14
CPC Classifications: B29C,B29L,B65B,B65D

Claim:
1. A butt-seamed package bag configured to be stored and transported in a flat posture, comprising: a laminate film including a sealant layer having two side portions joined at a butt-seamed joint portion, and top and bottom portions joined, such that the joined portions define a filling space for a packed material, wherein a pouring path for the packed material is provided at an intermediate position between both side portions, and is disposed in a middle part of the butt-seamed joint portion in an extending direction thereof, and at least a part of the pouring path is provided with a heat sealed separable portion having a joint seal strength relatively lower than a joint seal strength of the butt-seamed joint portion such that when the butt-seamed package bag is in the flat posture and the filling space is pressed during storage or transport of the butt-seamed package bag, the heat sealed separable portion remains sealed, and when both side portions are folded about the butt-seamed joint portion into a mountain state and the packed material in the filling space is pressed during a pouring operation, the heat sealed separable portion is separated by the pressure of the packed material being pressed to allow the single packed material to flow out of the pouring path.