| 摘要 |
A single elongated sheet of waterproof flexible material is horizontally and medially folded to form both an open-topped lower container and an upper lid for the container. The container is preformed by folding the two sides of the lower portion of the sheet inwardly and adhesively securing them to each other and to the bottom of the sheet. The inwardly folded sides have overlapping accordian-like folds to permit expansion of the open top of the container. The accordian-like folds extend upwardly along the opposite sides of the lid to form a trough for directing material into the open top of the container. Suspension means are provided for suspending the open container by its lid and for closing the open top when desired.
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