Food or edible material: processes – compositions – and products – Packaged or wrapped product – Packaging structure cooperating with food generated gas
Patent
1993-11-12
1995-10-10
Czaja, Donald E.
Food or edible material: processes, compositions, and products
Packaged or wrapped product
Packaging structure cooperating with food generated gas
426 77, 426106, 426112, 426113, 426119, 426120, 426124, 426394, 426407, 426131, 206219, 206220, B65D 2508
Patent
active
054569290
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to canned goods to be heated wherein contents of the canned food or beverage are directly heated together with the body of the can itself when it is in use.
BACKGROUND ART
Canned goods have hitherto been used for non-perishables. When it is necessary to cook these contents by heating, the contents are cooked after a lid of the can has been opened and the contents have been poured into another vessel. Moreover, the contents of the can are mixedly contained in the can without separation.
In respect of canned beverages, some of them are dispensed by a vending machine which keeps them warm. For instance, in the case of beverages such as red tea, green tea or oolong tea, ingredients of the tea are previously leached from tea-leaves by infusing the tea-leaves in hot water. A resulting infusion is then packed into cans, and canned beverages thus produced are then distributed and sold. The canned beverages are usually kept warm inside a vending machine.
Some contents may be enhanced to a greater extent in commercial value by mixing them when heated as compared with the heating of the pre-mixed contents of the foregoing canned beverages. It is difficult for conventional canned foods or beverages to meet such a demand.
For example, in the case of canned beverages, ingredients of several types of beverages are already leached out and packed into cans. Such a beverage is slightly different from a beverage in which ingredients thereof are leached or dissolved immediately prior to being drunk. The commercial value of some beverages is enhanced by infusing tea-leaves in hot water when they are drunk. Conventional canned beverages cannot meet such a demand.
Hence, the object of this invention is to provide canned goods to be heated arranged to make it possible to store contents in isolation from each other, and also to heat the contents while they are mixed together when the canned food or beverage is used.
Another object of this invention is to provide canned goods which are subjected to a heat treatment for sterilizing purposes at a given temperature and for a given period which are suitable for the contents of a canned food or beverage after the contents have been packed, and which is arranged to make it possible to store the contents in isolation from each other after the sterilizing process, and the separated contents are mixed together when the canned food or beverage is heated.
DISCLOSURE OF THE INVENTION
To solve the foregoing drawbacks in the prior art, canned goods of this invention are basically arranged to contain liquid contents such as water within a heat-resisting can body having an opening section formed on an upper part of the can body, and to store other contents isolated from the liquid contents, and to bring both contents into contact with each other by heating the can above a predetermined temperature with the opening section open so that the separated contents can become mixed together.
With such an arrangement, when the can remains sealed and preserved before it is heated, contents stored within the heat-resisting can body are kept isolated from each other even after the sterilizing process. However, when the can body is open and heated, the contents are mixed together. Thus, it is possible to achieve the preserved state and heated state suitable for the contents, and hence it is possible to enhance the commercial value of the canned goods.
As a first specific structure for such canned goods, liquid contents such as water are contained in a heat-resisting can body having an opening section formed on an upper part thereof. A capsule body is also inserted into this can body, and this capsule body is composed of a casing containing other contents and sealed by a closing member which opens the casing when a pressure difference between inside and outside the capsule exceeds a predetermined value. When the can body is heated while open, the closing member opens the casing in accordance with the inflation of a gas inside the capsule body.
According to the first
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Mifune Hideo
Nitta Tomio
Shike Tsutomu
Cano Milton I.
Czaja Donald E.
Tokai Corporation
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