| 摘要 |
PROBLEM TO BE SOLVED: To increase the strengths of a mutually engaging closure and a packaging container by arranging at least one end seal and the mutually engaging closure comprising a continuous multiple layer, which can be repeatedly opened and resealed, on both end sections of a closed container main body comprising a flexible packaging material, and contriving the multiple layer structure. SOLUTION: For this packaging container 20, heat-sealed end seals 21A and 21B, a peeling off feature section 62 and a container engaging closure 22, which can be resealed, are arranged on both end sections. Also, on the container engaging closure 22, e.g. hinge forming sections 31 and V-shaped reinforcing notches 60 are formed in the longitudinal direction with intervals. In addition, on the lower surface 23 of the container, both internal and external margins 48 and 49 are superposed, and the upper surface 24 of the container is continued. Then, the container engaging closure 22 is formed of a multiple layer film, wherein a film to form the packaging container 20 at the time of the container forming process, is folded into a fan-shape to the opposite side. In this case, at least one section of the external section of the container engaging closure 22 is formed of a layer of which the number of layers is larger than that of the inside at least by one layer. |
