FIELD: transport, package.
SUBSTANCE: invention relates to disposable package, e.g. to container for hot food. Container with double wall includes inner wall and outer wall attached to the inner wall. In this structure, the inner wall and the outer wall create air gap between them. There is expandable covering inserted between the inner wall and the outer wall in unexpanded condition. The covering is made capable to be activated for expanding by the temperature of beverage or food.
EFFECT: invention makes possible to decrease thickness of base for container manufacturing keeping its hardness and to preserve food in warm condition.
15 cl, 17 dwg, 6 ex
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