| 摘要 |
A four-sided, clam-shell-like container is formed from a preformed, rigid U-shaped cross-section. The U-shaped member has a base wall and opposing side walls. The base and side walls and the intersection of the base and side walls are rigid. The base wail has a thickness having a slot is formed therein. The slot extends longitudinally along a length of the base wall and is formed in an inner surface thereof into the thickness of the base wall. The slot defines base wall sections adjacent and connected to one another by a portion of the thickness of the base wail. The base wall portions and the side walls adjacent thereto are foldable inward along the slot so as to form a four-sided, generally rectangular shaped cross-section container such that ends of the side walls are near one another and are foldable outward for stacking and storing the U-shaped members.
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