| 摘要 |
PURPOSE: Provided is a disposable double paper case to prevent the projection portions of layered cases from being crushed when a vertical load is applied, by firmly connecting an inner side paper and an outside cover paper; a base board and a lower end part of the cover paper; and forming a number of inward projections at regular intervals, around the circumference of the inner lower part of the paper case. CONSTITUTION: The disposable double paper case, in which a cover paper(7) is attached to form a space portion(6) around the outside circumference of the paper case(5) including a bottom paper(1) at the lower end part of a side paper(4), comprises a double curling portion(11) where the upper end of the side paper(4) and the upper end of the cover paper(7) are outwardly rolled; an outward expansion portion(12) where a base board(8) is more broadly expanded than the lower end of the side paper; a space portion(6) between the side paper(4) and the cover paper(7); and a number of inward projections(13) formed at the side paper(4).
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