Daiwa Can Company

Tsuyoshi Kawabata

Hidetomo Kohara

Susumu Sato

Haruka Yajima

Yuka Tozaki

To prevent a reduction in a bending strength and a buckling strength of a container bag for fluid in which a spout is mounted on an upper end of a trunk section formed of a sheet material. Cellsare formed between two films of the sheet materialby bonding the films together along bonding lines, and inflated with fluid. The cellspositioned within a width of the spout in a width direction of the trunk sectionextends downwardly from a site at which the spoutis clamped by the layers of the sheet material. A lower end of the spoutis situated lower than upper ends of the cells

Container bag for liquid having a spout

To provide a container bagthat can be manufactured easily by folding a sheet materialprecisely along a folding lineB. The sheet materialis prepared by bonding two filmsandtogether in a predetermined pattern, and the sheet materialcomprises a plurality of cellsformed between the two filmsandwhile being joined to one another to be filled with fluid. A trunk portionto be filled with a content is formed by bonding overlapping layers of a peripheral edgeA of the folded sheet material. A bottom portionof the container bagis folded inwardly toward the trunk portionalong the folding lineB. A non-bonded sectionin which the two filmsandare not bonded together is maintained linearly within the folding lineB.

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Sagamihara, Japan

Tsuyoshi Kawabata