| 摘要 |
A tray particularly adapted for containing a flowable material, such as, a food product which may be heated prior to consumption, wherein the tray is formed from a single blank of foldable sheet material, for example, paperboard having a heat resistant coating, which blank is cut, creased and folded so as to provide a rectangular bottom wall with upstanding sidewalls which are joined at the ends by integral web sections folded and secured so as to provide relatively rigid posts at each of the corners with inwardly bowed generally rectangular inside surfaces and with the bottom ends on curved lines which bridge the ends of spaced parallel fold lines at the juncture of the bottom wall forming panel and the sidewall forming panels whereby the interior of the tray presents curved surfaces in the areas where the walls intersect.
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