Insulated and moisture absorbent food container and method of manufacture
AssigneeFred C. Laage
InventorsFred C. Laage, Patrick A. Loftus
Life of this patent
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Abstract
The specification discloses a method for packaging hot foods in a unique container having an inner layer of absorbent paperboard adhered to an outer layer of resinous foam insulating material. The inner paperboard layer has an absorbent porous surface and has sufficient thickness and rigidity to lend body to the container. The outer foam layer is sufficiently thick to insulate and prevent moisture leakage.
Claims20
A method for packaging a hot food having a first portion thereof of a constituency which gives off condensing moisture while in heated condition and an other portion of a constituency that is capable of absorbing said moisture with a negative affect on texture and appeal of said hot food comprising:
- providing a covered container having an inner food containing layer of absorbent paperboard adhered to an outer layer of resinous foam insulating material enclosing said inner layer, wherein the inner paperboard layer has an absorbent porous surface and has sufficient thickness and rigidity to lend body and strength to the container, and wherein said outer foam layer is suffciently thick to insulate and prevent moisture leakage from said container;
- and
- placing said hot food in said covered container on said inner layer so that said absorbent paperboard absorbs a substantial amount of said moisture given off by said first portion thereby substantially lessening the moisture absorbed by said other portion to prevent the said other portion from becoming soggy,
- said resinous foam material preventing said moisture absorbed by said paperboard from leaking through said container while at the same time retaining heat in said container.
A method for packaging hot food having a first portion thereof of a constituency which gives off condensing moisture while in heated condition and an other portion of a constituency that is capable of absorbing said moisture with a negative affect on texture and appeal of said hot food comprising:
- providing a covered container having an inner food contacting layer of absorbent paperboard adhered to an outer layer of resinous foam insulating material enclosing said inner layer, by an intermediate layer of a rubber based adhesive, wherein said inner paperboard layer has an absorbent porous surface and a thickness of from 0.010 inches to 0.020 inches, and wherein said outer foam layer has a thickness of from 0.010 inches to 0.075 inches and density of from approximately 4 to approximately 5 pounds per cubic foot,
- placing said hot food in said covered container on said inner layer so that said absorbent paperboard absorbs a substantial amount of said moisture given off by said first portion thereby substantially lessening the moisture absorbed by said other portion to prevent the said other portion from becoming soggy,
- said resinous foam material preventing said moisture absorbed by said paperboard from leaking through said container while at the same time retaining heat in said container.
In a hot food package comprising a covered container containing hot food having a first portion thereof of a constituency which while in heated condition gives off condensing moisture and an other portion of a constituency that is capable of absorbing said moisture with a negative affect on texture and appeal of said hot food;
- the improvement comprising said covered container being constructed of an inner food contacting layer of absorbent paperboard adhered to a outer layer of resinous foam insulating material enclosing said inner layer, wherein said paperboard layer has an absorbent porous exposed inner surface and has sufficient thickness and rigidity to lend body and strength to the container, yet is sufficiently thin that it can be bent from flat sheet into the shape of a container, and wherein said outer foam layer is sufficiently thick to insulate and prevent moisture leakage, yet is sufficiently thin that it will bend without excessive fracturing when said paperboard is bent;
- said absorbent paperboard absorbing a substantial amount of said moisture given off by said first portion of said food thereby substantially lessening the moisture absorbed by said other portion to prevent the said other portion from becoming soggy,
- said resinous foam material preventing said moisture absorbed by said paperboard from leaking through said container while at the same time retaining heat in said container.
Dependencies are inferred from the claim text.