作者: Morell J. Holden , Frank LeBoutillier
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摘要: An integral tray structure of expanded substantially rigid plastic foam material, typically polystyrene is formed to have a bottom plate surface, an upstanding surrounding, inclined rim and laterally projecting flange on the rim, having, around its periphery, spaced projections, recess means which are so arranged that, upon inversion above another structure, hollow, insulated chamber, contain hot or cold food, formed. The can be used lock structures together, rims permitting nesting within each other, for minimum space requirements themselves transportation storage. projecting-recess may as tabs engaging notches, perpendicularly buttons matching cut-outs.