| 摘要 |
PROBLEM TO BE SOLVED: To provide a web-corner type paper container capable of being easily returned into an original flat blank. SOLUTION: Side plates 12 and 13 extend upward from the sides of a bottom plate 11 of a polygonal shape. Triangular foldable portions are respectively continuously provided with both sides of each side plate. A web corner W is formed such that the adjacent foldable portions are connected via folding lines radially extending from each corner of the bottom plate 11. A folding-back plate 16 almost identical in size to each side plate is continuously provided with the upper edge of the side plate 12 on which the web corners W are folded toward the external face of the side plate 12. The folding-back plate 16 is folded over so as to press the web corners W folded toward the external face of the side plate 12. Then, they are stuck together in an adhesive area F. By peeling each folding-back plate 16 from the side plate 12 from an end edge thereof, the web corner W is naturally extended into a flat blank. COPYRIGHT: (C)2007,JPO&INPIT
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