Corrugated paperboard dishware and cookware
OwnerJose Porchia, Barry T. Calpinoinventors
Life of this patent
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Abstract
Disposable dishware and cookware may be constructed from corrugated paperboard. The corrugated paperboard provides voids filled with air to serve as a natural insulation barrier. In so doing the contents held by the dishware are maintained at a desired temperature longer without transferring temperature to the user. The voids may also serve as conduits or plenums to communicate hot air away from the cookware and thus provide for use at elevated temperatures.
Claims28
An insulated, food container manufactured from cellulosic materials, comprising:
- a bottom wall;
- and
- an upstanding outer wall attached to the bottom wall and defining an interior space, the outer wall including an inner layer, an outer layer, and a corrugated layer between the inner layer and outer layer defining voids, the interior space being insulated from the atmosphere by the outer wall and the voids in the corrugated layer.
An insulated container manufactured from cellulosic materials, comprising:
- a bottom wall;
- an upstanding outer wall attached to the bottom wall and defining a mouth and an interior space, the outer wall including a corrugated layer and at least one substantially planar layer attached to the corrugated layer, the corrugated layer including a plurality of flutes forming voids in cooperation with the planar layer.
A method of cooking a foodstuff, comprising:
- disposing a foodstuff in container manufactured of cellulosic materials, the container including a bottom wall and an upstanding outer wall, the outer wall including an inner layer, an outer layer, and a corrugated layer between the inner layer and outer layer defining voids;
- and
- warming the foodstuff within the container.
A method of evenly cooling a foodstuff, comprising:
- disposing a foodstuff within a container, the container having an outer wall including an outer layer, an inner layer, and a corrugated layer between the inner layer and outer layer defining voids;
- placing the container in an atmosphere cooler than the temperature of the foodstuff;
- and
- allowing the heat of the foodstuff to dissipate within the voids of the outer wall and to the atmosphere.
Dependencies are inferred from the claim text.