| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a packaging container of which strength is not reduced. SOLUTION: This packaging container is constituted of a first panel P1, a second panel P2, a third panel P3, and a fourth panel P4 respectively provided with rectangular parts a1-a4 constituting the side walls, a fifth panel P5 welded to the first panel P1 with heat to constitute a vertical seal part, and a sixth panel formed adjacently to the rectangular part c3 constituting the bottom wall of the third panel P3 and composed of the main sealing part s6 and the turning-back sealing part r6 and further, welded to the first panel P1 with heat. The sixth panel P6 and the first panel P1 are welded with each other so as to turn the end face of the sixth panel P6 to the outside of the packaging container. In this case, since the end face of the sixth panel P6 is not exposed to the inside of the packaging container and turned to the outside, it does not contact the contents. And as the contents do not penetrate from the end face of the sixth panel into the packaging material 11, the strength of the packaging container is not reduced.</p> |
