JPH10218248A - Packaged food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable quality to be kept for a long period of time and further enable a discoloration to be prevented for a long period of time by a method wherein gas is replaced to fill an inner container and packaged, and gas is replaced to fill an outer container and packaged to be sealingly closed. SOLUTION: A food packaging amount in an inner container 2 is stored by a specified amount of use for one time, gas is replaced, filled and a residual amount of oxygen in the inner container 2 is set to be less than 5% of gas in the inner container 2, resulting in that the opening section is sealingly closed under this state. An outer container 3 has the inner container 2 stored therein, gas is replaced and air-tightly sealed in it to perform a gas replacement and packaging. A residual amount of oxygen is set to be less than 5% of gas in the outer container 3. The outer container 3 is formed into a lateral cubic bag by a film having the same gas barrier characteristic as that of the inner container 2. A partition plate 9 for preventing a displacement of position of the stored inner container 2 is arranged at a central section in a longitudinal direction of the outer container 3. The partition plate 9 is formed by a cardboard or plastic plate and the same number of inner containers 2 are stored at both sides of the partition plate 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The packaged food of the present invention is a packaged food which is packaged double and airtightly so that it can be stored for a long period of time, and is a dried food, especially a food having a flavor, for example, shaved knots and dried dishes. , Flavor seasonings such as soup stock, sprinkles, seaweeds such as laver, tea such as green tea, herbs such as herbs, delicacies such as squid, nuts such as walnuts, peanuts, confectionery such as potato chips, It can be used to preserve the quality of bread and the like for a long time. Can be used for long-term storage.

[0002]

2. Description of the Related Art Generally, foods are oxidized by atmospheric oxygen to deteriorate in quality, and aerobic bacteria proliferate under oxygen. For this reason, when packaging food, it is desirable to remove air (oxygen) in the packaging container as much as possible. Conventionally, packaging methods for removing air in the packaging as much as possible have been put into practical use, and the main packaging methods include vacuum packaging, gas replacement filling packaging, and packaging containing a deoxidizer in a packaging container. is there.

[0003] In the case of laver, there is a type of laver that is naked or wrapped in cellophane or the like and sealed or sealed in a can with a lid together with a desiccant. In the case of shaved nodes, there is a gas-filled and packaged gas-tight bag made of plastic having gas barrier properties. Recently, the shaving node is in a multi-layer (laminated) plastic film gas barrier bag using an EVOH film or the like (oxygen permeability is 20 ° C in JAS standard, 1 ml / m ² · 24h or less in dry state). Many are sealed with nitrogen gas filling. Also,
As disclosed in Japanese Utility Model Application Laid-Open No. 56-65869, food is sealed in an inner container having no gas barrier property, and a plurality of these are packaged together with a deoxidizer in an outer container having gas barrier property (double Packaged).

[0004]

The above-mentioned conventional packaged food has the following problems. . In vacuum packaging, the contents are crushed and the appearance is poor. In addition, since air cannot be sufficiently removed, dried foods, particularly foods having a flavor, for example, flavor seasonings such as cut-out knots, boiled dashi, soup stock, sprinkles, seaweeds such as laver, and teas such as green tea , Herbs and other herbs, squid and other delicacies,
It is not suitable for packaging of nuts such as walnuts and peanuts, confectionery such as potato chips, breads and the like, particularly foods that have a flavor and are significantly oxidized even by a small amount of oxygen to deteriorate the flavor. . Even in containers with gas barrier properties, in the long term,
Since it is not possible to completely prevent the invasion of oxygen, even if it is packaged simply, a small amount of oxygen will penetrate, and the small amount of oxygen will result in foods with the above-mentioned flavors, such as cut-off knots and dried dishes. Is significantly oxidized and loses flavor, discoloration and discoloration. For this reason, there is a limit to long-term storage, at most about one year. . Normal packaged foods often contain more than a single use in a single container, so the food that remains unusable even after opening is oxidized and loses flavor. , Fading or discoloring. . If the container is a can or a bottle, it has a shape retention property (it does not deform even if external pressure is applied to some extent), but if the container does not have a shape retention property, the container will deform when exposed to external pressure, It loses shape and collapses. . When a simple oxygen absorber is used, it usually only absorbs oxygen, so the volume in the container is reduced by the amount of oxygen absorbed by the oxygen absorber, and the container may be partially dented. Is bad. . Ordinary gas-exchanged packaged foods are hard to notice the invasion of oxygen until they have faded or discolored, and if they do, it is too late to prevent quality deterioration. . A double-wrapped product is simply a matter of convenience for sale or in appearance, in which a plurality of inner containers are collectively packaged in an outer container. Because of this, the preservation period did not increase significantly even with double packaging.

[0005]

According to the present invention, a packaged food according to the first aspect of the present invention is provided with a gasket-filled food container 1 having a gasket or the like, filled with a gas-filled container, and hermetically sealed. Is sealed in the outer container 3 having gas barrier properties by gas replacement filling and packaging.

[0006] The packaged food according to claim 2 of the present invention,
The food 1 such as shavings is housed and sealed in an inner container 2 having a gas barrier property and provided with an oxygen scavenger, and the inner container 2 is sealed in a gas-barrier outer container 3 by gas replacement filling and packaging. It is.

In the present invention, the packaged food according to claim 3 is:
A food 1 such as a cut-off node is sealed in a container 2 having gas barrier properties by gas replacement filling and packaging, and the container 2 is housed and sealed in an outer container 3 having gas barrier properties and provided with an oxygen scavenger. It is.

[0008] The packaged food according to claim 4 of the present invention,
The food 1 such as a cut-off node is housed and sealed in an inner container 2 having a gas barrier property and provided with an oxygen scavenger, and the inner container 2 is housed in an outer container 3 having a gas barrier property and provided with an oxygen scavenger. It is sealed.

[0009] The packaged food according to claim 5 of the present invention,
A food 1 such as a cut-off node is stored in an inner container 2 having a gas barrier property and provided with an oxygen scavenger and filled with gas replacement filling, and the outer container 2 having a gas barrier property and provided with an oxygen scavenger is provided. 3 or sealed in an outer container 3 having a gas barrier property and packed with gas replacement.

[0010] The packaged food according to claim 6 of the present invention comprises:
The food 1 such as shaved knot is stored and sealed in an inner container 2 having a gas barrier property and provided with an oxygen scavenger, or is stored in an inner container 2 having a gas barrier property and packed and replaced with gas. This is housed in an outer container 3 having a gas barrier property and provided with an oxygen scavenger, and packed by gas replacement.

[0011] The packaged food according to claim 7 of the present invention,
A food 1 such as a cut-off node is contained in an inner container 2 having a gas barrier property and provided with an oxygen scavenger and packed for gas replacement, and the inner container 2 having a gas barrier property and an oxygen scavenger is provided. 3 and packaged by gas replacement filling.

[0012] The packaged food according to claim 8 of the present invention,
The food 1 such as a cut-off node is filled and sealed in an inner container 2 having a gas barrier property by gas replacement, and the inner container 2 is housed and sealed in an outer container 3 having a liquid barrier property.

[0013] The packaged food according to claim 9 of the present invention,
Food 1 such as shaved knot has gas barrier properties and oxygen absorber 4
The inner container 2 is housed and sealed in an inner container 2 provided with a liquid container, and the inner container 2 is housed and sealed in an outer container 3 having a liquid barrier property.

In the packaged food according to the present invention, the food 1 such as a shaved knot is contained in an inner container 2 having a gas barrier property and provided with an oxygen scavenger 4, and is packed by gas replacement. The inner container 2 is housed and sealed in an outer container 3 having a liquid barrier property.

The packaged food according to claim 11 of the present invention is characterized in that, in each of the packaged foods according to claims 8 to 10, the outer container 3 also has a gas barrier property. is there.

According to a twelfth aspect of the present invention, there is provided the packaged food according to any one of the eighth to tenth aspects, wherein the outer container 3 also has a gas barrier property and is provided with an oxygen scavenger 4. The present invention is characterized in that

According to a thirteenth aspect of the present invention, there is provided the packaged food according to the eleventh or twelfth aspect, wherein the inside of the outer container 3 is filled with a gas replacement and sealed.

The packaged food according to claim 14 of the present invention is the packaged food according to any one of claims 1 to 13, wherein the outer container 3 and / or the inner container 2 are discolored by oxygen. The detection agent 5 is enclosed.

In the present invention, the packaged food according to claim 15 is a packaged food according to claims 1 to 14,
All or part of both or one of the outer container 3 and the inner container 2,
It is characterized in that the inside can be seen through.

The packaged food according to claim 16 of the present invention is the packaged food according to any one of claims 1 to 15, wherein a plurality of inner containers 2 in which the food 1 such as shavings are packaged, and an outer container 3 are provided. It is sealed inside.

The packaged food according to claim 17 of the present invention is the packaged food according to any one of claims 1 to 16, wherein the food 1 such as a shaved node is sealed in the inner container 2 for each use. Things.

The packaged food according to claim 18 of the present invention is characterized in that, in each of the packaged foods according to claims 1 to 17, the outer container 3 has gas barrier properties for a longer period than the inner container 2. It is assumed that.

The packaged food according to the nineteenth aspect of the present invention is the packaged food according to any one of the first to the eighteenth aspects, wherein the outer container 3 has an inner container opening 7 and the outer container 3 is provided.
And the inner container inlet / outlet 7 has a gas barrier property for a longer period than the inner container 2.

The packaged food according to claim 20 of the present invention is the packaged food according to any one of claims 1 to 19, wherein the inner container outlet 7 of the outer container 3 has a gas barrier property or a liquid barrier property or both. It is characterized by having what was provided.

The packaged food according to claim 21 of the present invention is the packaged food according to any one of claims 1 to 20, wherein a sealing mechanism 11 is provided at the inner container opening / outlet 7 of the outer container 3. is there.

The packaged food according to claim 22 of the present invention is the packaged food according to any one of claims 1 to 21, wherein the inner container opening 7 of the outer container 3 has a gas-barrier film or sheet shape. It is characterized in that it is air-tightly covered with a plate-shaped covering material 8 or the like.

In the packaged food according to claim 23 of the present invention, in the packaged food according to any one of claims 1 to 22, the inner container outlet 7 of the outer container 3 is provided with a gas barrier property and deoxygenation. Film, sheet,
It is air-tightly covered with a plate-like covering material 8.

The packaged food according to claim 24 of the present invention is the packaged food according to any one of claims 1 to 23, wherein the inner container outlet 7 of the outer container 3 is hermetically sealed with a metal covering material 9. It is coated.

The packaged food according to claim 25 of the present invention is the same as the packaged food according to any one of claims 1 to 23, except that the inner container outlet 7 of the outer container 3 is provided with a deoxidizer 4. Is covered air-tightly with the coating material 9.

In the packaged food according to claim 26 of the present invention, the gas to be replaced in each of the packaged foods according to claims 1 to 25 is an inert gas such as nitrogen gas or a carbon dioxide gas. Alternatively, a mixed gas of these is used.

The packaged food according to claim 27 of the present invention is the packaged food according to any one of claims 2 to 26, wherein the oxygen absorber 4 generates carbon dioxide when absorbing oxygen. And / or a carbon dioxide non-generation type which does not generate carbon dioxide gas even when oxygen is absorbed.

[0060]

First Embodiment A first embodiment of the packaged food of the present invention will be described with reference to FIG. The food 1 in this embodiment is a sharpened node. In this embodiment, the food 1 is accommodated in a film inner container 2 made of a synthetic resin and having a gas barrier property, and is packaged by gas replacement filling.
Are contained in an outer container 3 made of a film having gas barrier properties and gas is replaced. Here, the film having gas barrier properties generally means that the oxygen permeability is 7 to 8 ml / m ² · 24 h or less in a dry state at a temperature of 20 ° C.

The amount of the food 1 packed in the inner container 2 is stored in an amount suitable for one use (about 3 to 5 g), and the inner container 2 is evacuated once and then filled with nitrogen gas. Either purging and replacing (substituting) the air while ejecting nitrogen gas and filling with nitrogen gas, or, although difficult in method, adding liquid nitrogen to expel air and perform gas replacement To fill the inner container 2 with 5% or less (preferably 0.5% or less) of the gas in the inner container 2, and then seal the opening (gas replacement and filling). Packaging).

The outer container 3 contains the inner container 2 in which the food 1 is packaged, and then is gas-filled and air-tightly sealed therein, and is packed with gas replacement. In this case, the remaining amount of oxygen is set to 5% or less (preferably 0.5% or less) of the gas in the outer container 3 as in the case of the inner container 2. Further, when the outer container 3 is filled with the gas replacement filling and packaging, the inner container 2 is filled with the gas replacement filling. Therefore, when the inside of the outer container 3 is evacuated, the inner container 2 is easily ruptured. For this reason, when the inner container 2 is filled with gas replacement filling in the outer container 3 of FIG. 1, the air in the outer container 3 is expelled while ejecting nitrogen gas into the outer container 3.
It is preferable to replace with nitrogen gas and package in that state.

The outer container 3 of FIG. 1 is formed into a horizontally long cubic bag-like shape by a film having gas barrier properties like the inner container 2. Partition plate 9 for preventing misalignment 2
Is arranged. The partition plate 9 is formed of cardboard or plastic, and the same number of inner containers 2 are accommodated on both sides of the partition plate 9.

Examples of the film having gas barrier properties, which are the materials of the inner container 2 and the outer container 3, include, for example, ethylene vinyl alcohol copolymer (EVOH film), polyvinylidene chloride (PVDC) film, PVDC coated cellophane, and PVDC coated film. A gas barrier film such as an axially stretched pet is used in a laminated structure with another film (for example, OPP or PE). Specific examples of the laminated structure film include, for example, OPP / EVOH / PE. In addition to this, a metal film or sheet such as an aluminum vapor-deposited film or an aluminum foil is similarly used for other films (for example, OP
P or PE).

The inner container 2 and the outer container 3 are formed of a transparent film so that the food 1 therein can be seen from the outside.

The gas used for gas replacement of the inner container 2 and the outer container 3 may be an inert gas such as a nitrogen gas, or a carbon dioxide gas.
Alternatively, a mixed gas thereof can be used. The inert gas and the carbon dioxide gas are suitable for suppressing deterioration of the quality of the food and preserving the food for a long time. In addition, carbon dioxide has a bacteriostatic effect.

An oxygen absorber 4 for absorbing oxygen inside the inner container 2 and / or the outer container 3 to prevent oxidation of the packaged food 1 is contained in the inner container 2 and / or the outer container 3. I have. One to a plurality of oxygen scavengers 4 are contained depending on the capacity of the containers. This deoxidizer 4 may be a carbon dioxide generating type that generates carbon dioxide by the amount of oxygen absorbed,
A carbon dioxide non-generation type that does not generate carbon dioxide may be used. When the carbon dioxide-generating type oxygen absorber 4 is used, even if the oxygen absorber 4 in the inner container 2 or the outer container 3 absorbs oxygen, the carbon dioxide gas is generated to that extent. Only the inner container 2 or outer container 3 does not dent inside,
The containers do not deform and look good. In particular, if carbon dioxide gas can be generated more than the amount of absorbed oxygen, the inner container 2 or the outer container 3 expands outward. Since this swelling means that the residual oxygen inside is absorbed by the oxygen scavenger 4, it is possible to check whether or not the gas barrier property is maintained only by checking the presence or absence of the swelling, and to control the quality. It is convenient. Also, if the state of bulging out continues,
Air is less likely to enter the inner container 2 or the outer container 3 from the outside, which is convenient for quality maintenance.

[0068]

Embodiment 2 A packaged food according to a second embodiment of the present invention will be described in detail with reference to FIG. The inner container 2 shown in FIG. 2 has the same structure and shape as the inner container shown in FIG. The outer container 3 shown in FIG. 2 has a film formed by laminating two rectangular aluminum sheets 10 (for example, ON / AL / CPP, etc.) or one side of the periphery of an aluminum vapor-deposited film (for example, VM-PET / CPP, etc.). An opening / closing mechanism 11 such as a zipper that can be opened / closed inside the opening / closing opening 7 as the container opening / closing opening 7.
Is provided. To seal the inner container 2 in the outer container 3, the outside of the opening / closing mechanism 11 (virtual line portion A) and the left and right virtual line portions B and C are hermetically sealed with an adhesive or welding.
The other piece D is left open, and the inner container 2 in which food is stored from the opened piece (bottom part) D
Are stored, and then a gas exchange is performed to seal one piece D, and then the gas exchange filling and packaging is performed. In this case as well, a carbon dioxide-generating type or non-carbon dioxide-generating type oxygen scavenger 4 can be put in both or one of the inner container 2 and the outer container 3. As the gas, an inert gas such as a nitrogen gas, a carbon dioxide gas, or a mixed gas thereof can be used.

The oxygen detecting agent 5 is also housed inside the outer container 3. The oxygen detector 5 is formed in the shape of a button. When the oxygen is detected in an abnormal condition such as a defective seal or a defective packing material such as a pinhole in the outer container 3, a defective gas replacement, or a defective oxygen absorber, the color changes when the oxygen is detected. Thus, the presence of oxygen in the outer container 3 can be notified, which is useful for food quality control. Of course, the oxygen detector 5 may be directly put in the inner container 2.

A part of the outer container 3 is provided with a transparent see-through window 13 so that the inside can be seen through from the outside. In the case of an aluminum vapor-deposited film, the see-through window 13 can be easily opened by performing paster processing. Therefore, this see-through window 13
If the oxygen detector 5 is arranged so as to be more visible, it can be determined whether the gas barrier property of the food 1 in the inner container 2 is maintained.

[0071]

Third Embodiment A third embodiment of the packaged food according to the present invention will be described with reference to FIG. The inner container 2 of the packaged food shown in FIGS. 3A and 3B has the same structure and shape as the inner container shown in FIG. The outer container 3 shown in FIGS. 3A and 3B is a can composed of a metal cylindrical main body 14 and a lid 15. A plurality of inner containers 2 are vertically arranged and housed in the outer container 3, and a plurality of inner containers 2 are similarly stacked and housed thereon, and the inner container opening 7 of the outer container 3 is large. An airtight seal is provided by a covering material having both gas barrier properties and liquid barrier properties, such as a laminated film or an aluminum vapor-deposited film of an aluminum sheet 18 having a sufficient margin (moderately slack). From the lid 1 as shown in FIG.
5 is detachably covered. In this case, the upper and lower inner containers 2
It is desirable to insert a partition between them so that the inner container 2 does not move up and down. Further, a knob 9 is formed on the aluminum sheet 18 so that the knob 9 can be pinched and easily peeled off. Since metal cans and aluminum sheets generally have better gas barrier properties than resin films having gas barrier properties, they can secure gas barrier properties for a longer period of time than inner containers 2 made of resin films. Further, discoloration and discoloration of the food in the inner container 2 due to oxidation can be prevented for a long period of time. Further, since the metal can and the aluminum sheet generally have better liquid barrier properties than the resin film, it is necessary to prevent the drying of the food (eg, shavings) inside even after being stored for a long period of time. It is possible to keep the food in a favorable moisture forever. Of course, a resin film may be used instead of the aluminum sheet. In this case, if it is transparent, the state of the inner container 2 can be seen through, the appearance is good, and it is useful for quality control.

The outer container (can) 3 contains one or a plurality of oxygen absorbers 4 depending on the volume. The oxygen scavenger 4 may be a carbon dioxide-generating type or a non-carbon dioxide-generating type. When a carbon dioxide-generating type oxygen absorber 4 is used, even if the oxygen absorber 4 in the outer container 3 absorbs oxygen, carbon dioxide is generated to the extent that the oxygen absorber 4 absorbs oxygen. Dripping. In particular, if an appropriate amount of carbon dioxide gas can be generated beyond the oxygen absorption amount, the aluminum sheet 18 expands outward. The airtightness of the food inside can be checked only by checking the presence or absence of the swelling. Further, if the state of bulging outside is continued, the internal pressure is constantly applied, and it becomes difficult for air to enter the inner container 2 or the outer container 3 from the outside, which is convenient for quality maintenance. When a carbon dioxide-free type is used, it is needless to say that the aluminum sheet 18 needs to have enough room to withstand the reduced pressure.

[0073]

Embodiment 4 A packaged food according to a fourth embodiment of the present invention will be described with reference to FIG. The inner container 2 and the outer container 3 in FIG. 4 are the same as those in FIGS. 3 (a) and 3 (b).
In this embodiment, the inner container inlet / outlet 7 of the outer container 3 is sealed with a metal plate 8, and when the knob 9 is pulled up, the entire metal plate 8 is removed and opened.

[0074]

Other Embodiments The outer container 3 is not limited to the shape of a bag as shown in FIGS. 1 and 2 or a can as shown in FIG. 3, but the third and fourth embodiments. For example, a three-dimensional container such as a bottle, a box, and a jar may be used. It is preferable that the outer container 3 does not deform even if pressure is applied from the outside (has shape retention), so that the inner container 2 does not collapse and the food in the inner container 2 does not collapse. The outer container 3 is provided with a gas barrier for a long period of time (for example, about 1 to 3 years) in order to prevent the food and the flavor in the inner container 2 from being impaired, discolored, and discolored by moisture. Needless to say, the property can be secured.
As long as such conditions are satisfied, the material of the outer container 3 is not limited to resin or metal, but may be other materials, such as ceramics, glass, and hard resin. Although there is a problem in shape retention, a laminated sheet of paper and a film having gas barrier properties may be used. These are generally good in the present invention because they also have excellent liquid barrier properties.

The oxygen absorber 4 and the oxygen detector 5 can be put not only in the outer container 3 but also in the inner container 2. In this case, they may be placed individually in the inner container 2 and the outer container 3, or both may be placed together. Also,
It is also possible to put them in the inner container 2 and the outer container 3, respectively, and replace them with an inert gas, a carbon dioxide gas, or a mixed gas thereof, and then perform hermetic packaging. As shown in FIG. 1, a cutout 1 for opening is provided on a part of the outer peripheral edge of the inner container 2 and the outer container 3.
If 9 is inserted, opening becomes easy.

In the above description, the oxygen absorber 4 packaged separately from the inner container 2 or the outer container 3 is accommodated in the inner container 2 or the outer container 3. Is not separately packaged from the inner container 2 or the outer container 3, but may be provided directly on the inner surface and / or the outer surface of the inner container 2 or directly on the inner surface of the outer container 3. . When provided directly on the inner or outer surface of the inner container 2 or on the inner surface of the outer container 3, the oxygen absorber 4 is applied to each surface,
A film or sheet formed of a material having the oxygen scavenger 4, that is, a film or sheet into which the oxygen scavenger 4 is mixed is laminated on each surface to form a laminated structure, The inner container 2 and the outer container 3 can be molded with a sheet. Examples of the film or sheet in which the oxygen scavenger 4 is mixed include, for example, a film or sheet layer formed by mixing an oxygen scavenger having a reducing substance as a main component with a resin having no gas barrier property, And a film or sheet layer having a laminated structure. In any case, the inner container 2 and the outer container 3 have gas barrier properties. Of course, when the oxygen absorber 4 is provided, the entire surface or a part thereof may be used regardless of the inner container 2 and the outer container 3. For example, in the case of a bag-shaped container, the oxygen-absorbing agent 4 may be provided by laminating a film on which the oxygen-absorbing agent 4 is mixed only on one side on the inner surface. In these cases,
Since the oxygen absorber 4 is integrated with the inner container 2, it takes less time and effort to package than the case where the oxygen absorber 4 separate from the inner container 2 is stored. Further, the space occupied by the oxygen scavenger 4 in the inner container 2 becomes unnecessary, and the size of the packaging is reduced.

In the present invention, as shown in FIG. 3, the oxygen absorber 4 can be provided also on the film or sheet 8 which hermetically seals the inner container opening 7 of the outer container 3. Also in this case, the oxygen absorber 4 is directly applied to the front and back surfaces or one of the surfaces of the film or sheet 8, or the film or sheet containing the oxygen absorber 4 is bonded to each surface, Alternatively, a film or sheet in which the oxygen scavenger 4 is mixed may be used for the sheet 8. Also in this case, the film or sheet 8 has gas barrier properties.
Further, as shown in FIG. 4, the oxygen absorber 4 can be provided also on a metal film, sheet or plate 9 for hermetically sealing the inner container opening 7 of the outer container 3. Also in this case, the oxygen absorber 4 may be directly applied to both or both surfaces of the metal film or sheet or the plate 9, or the film or sheet containing the oxygen absorber 4 may be attached to each surface. A film or sheet in which the oxygen scavenger 4 is mixed may be used as the film or sheet to be combined or sealed. Of course, when the oxygen absorber 4 is provided, it may be the whole surface or a part of the inner container inlet / outlet 7.

In the present invention, even if the oxygen absorber 4 packaged separately from the inner container 2 and / or the outer container 3 is housed in the inner container 2 and / or the outer container 3, both or one of the inner container 2 and the outer container 3 may be used. 4 or a container molded with a material having an oxygen scavenger can also be used. In the present invention, the outer container 3 can have a liquid barrier property. In addition, the outer container 3 may have not only a liquid barrier property but also a gas barrier property. If the outer vessel 3 also has a gas barrier property, it may be further provided with an oxygen scavenger.

[0079]

According to the present invention, the packaged food according to the first aspect of the present invention is obtained by double-packing a food 1 such as a shaved knot with an inner container 2 having a gas barrier property and an outer container 3 having a gas barrier property. Since each of the outer container 2 and the outer container 3 is double-packaged by gas replacement, the following effects can be obtained. . Since the penetration of oxygen into the inner container 2 can be prevented twice and the intrusion can be prevented for a long period of time, the flavor and quality of the food 1 in the inner container 2 can be maintained for a long period of time and the discoloration and discoloration can be prevented. It can be prevented for a long time. For example, in the present invention, the shelf life (quality preservation period) is one year for a normal scrap-knot pack product, but it can be one and a half to two years or more in the present invention. . Since the outer container 3 also has a gas barrier property, if the gas barrier property can be ensured for a long period of time, the quality of the food 1 in the inner container 2 is ensured even if the gas barrier property of the inner container 2 can be maintained for a short period of time. Therefore, it is possible to use an inexpensive packaging material for the inner container 2, and the cost of the packaging container does not become particularly high as compared with a conventional simple double packaging. Rather, when the number of the inner containers 2 is large, an inexpensive packaging material can be used, and the expensive packaging material having excellent gas barrier properties may be used only for the small number of outer containers 3. Material costs can be reduced. Therefore, the food 1 can be provided at a low cost,
The economic effect is also great for consumers. . In addition, in the case of conventional single packaging, even if the quality can be maintained only for a short period of time, since the period from shipment to consumption by the consumer is uncertain, at least a long period until consumption is anticipated. Thus, expensive packaging materials having excellent gas barrier properties had to be used for the individual inner containers 2. However, in the present invention, in the case of foods to be used in a short period of time, unless the outer container 3 is opened, the contents are not changed. Food 1 in vessel 2
Therefore, a packaging material that cannot maintain gas barrier properties for a long period of time can be used for each inner container 2. For example, a product in which a plurality of inner containers 2 with a small usage amount are stored in the outer container 3 can be consumed in one month until the outer container 3 is opened and consumed after reaching the consumer's hand. For example, the inner container 2 can use a packaging material having gas barrier properties that can maintain the quality for only one month. This results in lower costs and is more economical for consumers.

The packaged food according to claim 2 of the present invention comprises:
The inner container 2 having a gas barrier property is provided with an oxygen absorber 4 and sealed, and the inner container 2 is gas-filled and sealed in an outer container 3 having a gas barrier property, so that the remaining oxygen in the outer container 3 is reduced. Almost no oxygen in the outer container 3 enters the inner container 2. Further, even if a small amount of oxygen remaining in the outer container 3 enters the inner container 2, the oxygen is absorbed by the oxygen absorber 4 of the inner container 2, so that the food 1
Flavor and quality can be maintained for a long time, and discoloration and discoloration can be prevented for a long time. Further, even if the airtightness of the inner container 2 and the outer container 3 is somewhat impaired, the quality of the food is maintained while the oxygen absorber 4 in the inner container 2 is effective.

The packaged food according to claim 3 of the present invention comprises:
The food 1 is gas-filled and packed in an inner container 2 having a gas barrier property, and the inner container 2 is sealed together with an oxygen absorber 4 in an outer container 3 having a gas barrier property. Even if it remains, the remaining oxygen is absorbed by the oxygen scavenger 4, so that it is difficult for oxygen to enter the inner container 2,
The flavor and quality of the food 1 of the inner container 2 can be maintained for a long time, and the discoloration and discoloration can be prevented for a long time. Even if the airtightness of the inner container 2 and the outer container 3 is somewhat impaired, the quality of the food is maintained while the oxygen absorber 4 in the outer container 3 is effective.

The packaged food according to claim 4 of the present invention comprises:
The food 1 is placed in an inner container 2 having gas barrier properties and an oxygen absorber 4
Since the inner container 2 is sealed in the outer container 3 having gas barrier properties together with the oxygen scavenger 4, the remaining oxygen in the inner container 2 is removed by the oxygen scavenger 4 in the inner container 2.
The remaining oxygen inside is absorbed by the oxygen scavenger 4 in the outer container 3, respectively, so that the flavor and quality of the food 1 in the inner container 2 for a longer period of time than when the oxygen scavenger 4 is not added. And discoloration and discoloration can be prevented for a long time. In addition, even if the airtightness of the inner container 2 and the outer container 3 is somewhat impaired, the quality of the food is maintained while the oxygen absorber 4 in the inner container 2 and the outer container 3 is effective. Become.

The packaged food according to claim 5 of the present invention comprises:
The food 1 is accommodated in an inner container 2 having a gas barrier property and provided with an oxygen scavenger and packed for gas replacement, and the inner container 2 is placed in an outer container 3 having a gas barrier property and provided with an oxygen scavenger. Since it is housed and sealed or housed in the outer container 3 having gas barrier properties and packed by gas replacement, if the outer container 3 is made to be the former, the residual oxygen in the inner container 2 Oxygen remaining in the outer container 3 is reduced by the oxygen absorber 4
Is absorbed by the oxygen scavenger 4 inside the oxygen absorber 4 respectively.
, The flavor and quality of the food 1 in the inner container 2 can be maintained for a longer period of time, and discoloration and discoloration can be prevented for a longer period of time. In addition, even if the airtightness of the inner container 2 and the outer container 3 is somewhat impaired, the quality of the food is maintained while both or one of the oxygen absorbers 4 in the inner container 2 and the outer container 3 is effective. Will be. When the outer container 3 is made as the latter, no oxygen remains in the outer container 3 so that the inner container 2
Oxygen does not enter inside from outside.

The packaged food according to claim 6 of the present invention comprises:
The food 1 is housed and sealed in an inner container 2 having a gas barrier property and provided with an oxygen scavenger, or is housed in an inner container 2 having a gas barrier property and packed for gas replacement. Since it is contained in the outer container 3 provided with the oxygen scavenger and packaged by gas replacement, almost no oxygen remains in the outer container 3 and oxygen does not enter the inner container 2 from the outer container 3. Further, even if oxygen does not remain in the inner container 2 and oxygen enters from the outer container 3, the oxygen is absorbed by the oxygen scavenger in the inner container 2. Quality and quality can be maintained for a long time, and discoloration and discoloration can be prevented for a long time. Further, even if the airtightness of the inner container 2 and the outer container 3 is somewhat impaired, the quality of the food is maintained while the oxygen absorber 4 in the inner container 2 is effective.

The packaged food according to claim 7 of the present invention comprises:
A food 1 such as a cut-off node is contained in an inner container 2 having a gas barrier property and provided with an oxygen scavenger and packed for gas replacement, and the inner container 2 having a gas barrier property and an oxygen scavenger is provided. 3 and gas-filled and packed inside
Even if a small amount of oxygen remains in the inside or a small amount of oxygen remains in the outer container 3, the remaining oxygen is absorbed by the oxygen absorber 4. Therefore, oxygen does not enter the inner container 2 from the outer container 3, and the flavor and quality of the food 1 in the inner container 2 can be maintained for a long period of time, and discoloration and discoloration can be prevented for a long period of time. Even if the airtightness of the inner container 2 and the outer container 3 is somewhat impaired, the quality of the food is maintained while the oxygen absorber 4 in the outer container 3 is effective.

The packaged food according to claim 8 of the present invention comprises:
The food 1 such as shaved knots is gas-filled and packed in an inner container 2 having a gas barrier property, and the inner container 2 is housed and sealed in an outer container 3 having a liquid barrier property. Can prevent the intrusion and dissipation of water or moisture, and can prevent the quality of food 1 that cannot be prevented only by the inner container 2 from deteriorating due to water or moisture. Retention is possible. In addition, inner container 2
In particular, in the case of a resin film alone, in some cases, it is insufficient to store food in favorable moisture, and the food may dry or absorb moisture over a long period of time. Drying and moisture absorption can also be prevented, and the quality maintenance of food is improved. Further, since the food 1 is packaged in the inner container 2 by gas replacement filling, there is almost no residual oxygen in the inner container 2 and oxidation and quality deterioration of the food in the inner container 2 are prevented.

The packaged food according to claim 9 of the present invention is
Food 1 such as shaved knot has gas barrier properties and oxygen absorber 4
Since the inner container 2 is housed and sealed in the inner container 2 provided with a liquid container, and the inner container 2 is housed and sealed in the outer container 3 having a liquid barrier property, water or moisture inside and outside the outer container 3 is prevented by the liquid barrier property of the outer container 3. Invasion and dissipation can be prevented, and the quality of the food 1 that cannot be prevented only by the inner container 2 can be prevented from being deteriorated by water or moisture. In addition, in the case of the inner container 2 alone, especially in the case of a resin film, it is insufficient to store the food in a preferable moisture, and the food may dry or absorb moisture over a long period of time. The container 3 can also prevent the food from drying and absorbing moisture, and further improve the quality of the food. Further, since the inner container 2 is provided with the oxygen scavenger 4, the residual oxygen in the inner container 2 is absorbed therein, and
Oxidation and quality deterioration of food are also prevented.

In the packaged food according to claim 10 of the present invention, the food 1 such as a shaved knot is accommodated in an inner container 2 having a gas barrier property and provided with an oxygen scavenger 4, and is packed by gas replacement. Since the inner container 2 is housed and sealed in the outer container 3 having a liquid barrier property, the liquid barrier property of the outer container 3 can prevent the intrusion and dissipation of water or moisture into and out of the outer container 3, and can be prevented by the inner container 2 alone. It is possible to prevent the quality of the food 1 that cannot be cut off from deteriorating due to water or moisture. In addition, inner container 2
In particular, in the case of a resin film alone, in some cases, it is insufficient to store food in favorable moisture, and the food may dry or absorb moisture over a long period of time. Drying and moisture absorption can also be prevented, and the quality maintenance of food is improved. Further, since the food 1 is packaged in the inner container 2 by gas replacement filling, there is almost no residual oxygen in the inner container 2 and oxidation and quality deterioration of the food in the inner container 2 are prevented. Further, since the inner container 2 is provided with the oxygen scavenger 4, even if there is residual oxygen in the inner container 2, the oxygen is absorbed by the oxygen scavenger 4, thereby preventing the food in the inner container 2 from oxidation and deterioration. Is done.

In the packaged food according to claim 11 of the present invention, since the outer container 3 also has gas barrier properties in each of the packaged foods according to claims 8 to 10, Item 10. In addition to the effects of the respective packaged foods of item 10, the outer container 3
Oxygen hardly penetrates into the inside, and the quality of the food in the inner container 2 is not degraded by moisture or moisture inside and outside the outer container,
Long-term quality retention is possible.

The packaged food according to the twelfth aspect of the present invention is the packaged food according to any one of the eighth to tenth aspects, wherein the outer container 3 has a gas barrier property and is provided with a deoxidizer 4. Therefore, in addition to the effects of the packaged foods according to claims 8 to 10, the gas barrier property of the outer container 3 makes it difficult for oxygen to enter the outer container 3 from the outside,
The oxygen that has entered the outer container 3 is absorbed by the oxygen absorber 4 provided in the outer container 3, so that the quality of the food in the inner container 2 is also maintained.

The packaged food according to claim 13 of the present invention is the same as the packaged food according to claim 11 or 12, since the inside of the outer container 3 is sealed by gas replacement filling and packaging.
In addition to the effects of the packaged food of claim 11 or claim 12, the outer container 3 is filled with gas replacement and sealed, so that there is almost no residual oxygen in the outer container 3 and the food in the inner container 2 This also has the effect of maintaining the quality of the garment better.

The packaged food according to claim 14 of the present invention is the packaged food according to claims 1 to 13, wherein the outer container 3 and / or the inner container 2 are discolored by oxygen. Since the detection agent 5 is enclosed, if the oxygen detection agent 5 can be seen through from the outside, the presence or absence of oxygen intrusion into the outer container 3 and the inner container 2 can be easily and reliably confirmed, and the food in the inner container 2 can be confirmed. Quality control becomes very easy.
Incidentally, since the intrusion of oxygen cannot be determined by visual inspection, it is difficult to notice the intrusion of oxygen unless the food 1 is faded or discolored, and when it is noticed, it is too late to prevent quality deterioration. Then there is no such thing.

In the present invention, the packaged food according to claim 15 is the same as the packaged food according to claims 1 to 14,
All or part of both or one of the outer container 3 and the inner container 2,
Since the inside can be seen through, the food in the inner container 2 can be checked from the outside of the outer container 3 in the former case without opening the outer container 3, and the quality of the food can be easily controlled. . In the latter case, the food in the inner container 2 can be checked from outside the inner container 2 and the state in the outer container 3 can be checked from the outer container 2 without opening the outer container 3, respectively. Quality control becomes easier. In addition, the packaged food is anxious if the food 1 inside the packaged food is not visible from the outside, but such anxiety is resolved.

The packaged food according to claim 16 of the present invention is the packaged food according to any one of claims 1 to 15, wherein a plurality of inner containers 2 in which the food 1 such as shaved nodes are packaged, and an outer container 3 are provided. Since it is sealed inside, the number of outer containers 3 is smaller than the number of inner containers 2, and handling and management during transportation, inventory management, sales and the like are facilitated. Further, since the outer container 3 also has a gas barrier property, even if the gas barrier property of the inner container 2 can be maintained for a short time,
Quality of the food 1 is ensured. For this reason, it is also possible to use an inexpensive packaging material for the inner container 2, and even if it is double-wrapped, the cost of the packaging container does not become particularly high. Rather, an inexpensive packaging material can be used for the inner container 2 having a large number, and an expensive packaging material having excellent gas barrier properties may be used only for the outer container 3 having a small number. Expenses can be reduced. As a result, the food 1 can be provided at a low cost, and the economic effect is great for consumers.

In the packaged food according to claim 17 of the present invention, in each of the packaged foods according to claims 1 to 16, the food 1 such as a shaving node is sealed in the inner container 2 for each use amount. Therefore, if the food 1 in the inner container 2 is opened, it can be used up at one time, and when a plurality of inner containers 2 are sealed, the remaining other inner containers 2 do not deteriorate. In addition, in the case of conventional single packaging, even if the quality can be maintained only for a short period of time, since the period from shipment to consumption by the consumer is uncertain, at least a long period until consumption is anticipated. Thus, an expensive packaging material having excellent gas barrier properties had to be used for each inner container 2. However, in the present invention, since each use amount is sealed, unless the outer container 3 is opened, Since the quality of the food 1 in the inner container 2 is ensured, a packaging material that cannot maintain gas barrier properties for a long period of time can be used for each inner container 2. This results in lower costs and is more economical for consumers.

The packaged food according to claim 18 of the present invention is the same as the packaged food according to claims 1 to 17, since the outer container 3 has a gas barrier property for a longer time than the inner container 2, Gas barrier properties can be ensured for a longer period of time than the film-made inner container 2, and the flavor and quality of the food in the inner container 2 deteriorate due to oxidation,
Discoloration can be prevented for a long time. In addition, even if the gas barrier property of the inner container 2 is deteriorated, the inner container 2 is protected by the outer container 3. Further, even if the airtightness of either the inner or outer container is impaired, the quality is not immediately impaired while the airtightness of one container remains.

The packaged food according to the nineteenth aspect of the present invention is the packaged food according to any one of the first to eighteenth aspects, wherein the outer container 3 has the inner container opening 7 and the outer container
In addition, since the inner container inlet / outlet 7 has a longer gas barrier property than the inner container 2, the gas barrier property can be secured for a longer period than the inner container 2 made of a resin film, and the food in the inner container 2 is oxidized. , The deterioration of the flavor and quality, and the fading and discoloration can be prevented for a long time. Even if the gas barrier property of the inner container 2 deteriorates, the inner container 2 is protected by the outer container 3.

The packaged food according to claim 20 of the present invention is the packaged food according to any one of claims 1 to 19, wherein the inner container outlet 7 of the outer container 3 has a gas barrier property or a liquid barrier property or both. Because it was equipped with
When the gas barrier property is provided, the airtightness is not deteriorated due to the provision of the inner container inlet / outlet 7, and the quality of the food in the inner container 2 is maintained. When it has a liquid barrier property, it is possible to prevent the inside food 1 (for example, shavings) from drying even after being stored for a long period of time, and to keep the food 1 in a preferable moisture forever. By the way, the moisture in the food 1 may escape from the food 1 for a long period of time and the food 1 may be dried too much by merely wrapping it in a container made of a resin film, but this is not the case in the present invention. .

In the packaged food according to claim 21 of the present invention, since the sealing mechanism 11 is provided at the inner container opening / outlet 7 of the outer container 3, even after the outer container 3 is once opened, the outlet 7 is kept open. It can be resealed, helping to maintain quality after opening.

The packaged food according to claim 22 of the present invention is the packaged food according to any one of claims 1 to 21, wherein the inner container opening 7 of the outer container 3 has a film shape or a sheet shape having gas barrier properties. Since it is air-tightly covered with a plate-shaped covering material 8, it is possible to prevent oxygen from entering through the inner container entrance 7 and prevent the food 1 from being oxidized, thereby maintaining flavor and quality, and fading, Discoloration can be prevented. If the film or sheet 8 is transparent, the inner container 2
If the inner container 2 is made of a transparent resin, the food inside can be seen well, defective products such as fading and discoloration can be discriminated from the outside, and it is useful for quality control.

The packaged food according to claim 23 of the present invention is the packaged food according to any one of claims 1 to 22, wherein the inner container outlet 7 of the outer container 3 is provided with a gas barrier property and deoxygenated. Film, sheet,
Since it is air-tightly covered with the plate-shaped covering material 8, it has the same effect as the packaged food according to claim 22, and furthermore, the oxygen absorber 4 provided in the inner container outlet 7 has the inner container outlet 7.
Oxygen that enters the outer container 3 from above is adsorbed, and oxygen in the outer container 3 is reduced, which is more effective in maintaining quality.

The packaged food according to claim 24 of the present invention is the packaged food according to any one of claims 1 to 23, wherein the inner container inlet / outlet 7 of the outer container 3 is hermetically sealed with a metal covering material 9. Since it is covered, unlike a resin film or the like, it is less likely to be torn or torn, can be more tightly sealed, and easily has a liquid barrier property.

The packaged food according to claim 25 of the present invention is the packaged food according to any one of claims 1 to 23, wherein the inner container outlet 7 of the outer container 3 is provided with a deoxidizer 4. Since it is air-tightly covered with the coating material 9, the same effect as that of the packaged food according to claim 24 is obtained, and furthermore, since the deoxidizer 4 is provided in the inner container inlet / outlet 7, the inner container can be taken in and out. Oxygen that enters the outer container 3 through the port 7 is adsorbed by the oxygen absorber 4, and oxygen in the outer container 3 is reduced, which is more effective in maintaining quality.

In the packaged food according to claim 26 of the present invention, in each of the packaged foods according to claims 1 to 25, the gas to be replaced is an inert gas such as nitrogen gas or carbon dioxide gas. Alternatively, since these gas mixtures are used, the effects of preventing the food 1 in the inner container 2 from being oxidized and preventing discoloration and discoloration are further improved as compared with the case where the gas is not replaced by these gases. In particular, when carbon dioxide gas is used, there is also a bacteriostatic effect.

The packaged food according to claim 27 of the present invention is the packaged food according to any one of claims 2 to 26, wherein the oxygen absorber 4 is a carbon dioxide-generating type that generates carbon dioxide when absorbing oxygen. Therefore, even if the oxygen absorber 4 in the outer container 3 absorbs oxygen, carbon dioxide gas is generated to that extent, so that the internal and external pressures are in an equilibrium state and the shape is maintained. In particular, if carbon dioxide gas can be generated appropriately beyond the oxygen absorption amount, the aluminum sheet 18 expands outward. The air tightness of the food 1 inside can be checked only by checking the presence or absence of the bulge. Further, if the state of bulging outside is continued, the internal pressure is constantly applied, and it becomes difficult for air to enter the inner container 2 or the outer container 3 from the outside, which is convenient for quality maintenance.

The packaged food according to claim 28 of the present invention is the packaged food according to any one of claims 2 to 26, wherein the oxygen absorber 4 is a carbon dioxide-generating type that generates carbon dioxide when oxygen is absorbed. And a carbon dioxide non-generation type which does not generate carbon dioxide gas even when oxygen is absorbed, so that the amount of absorbed oxygen is increased and carbon dioxide gas is reliably generated.

[Brief description of the drawings]

FIG. 1 is a longitudinal perspective view showing a first embodiment of a packaged food of the present invention.

FIG. 2 is a perspective view showing a second embodiment of the packaged food according to the present invention in a partially cut state.

FIG. 3A is a perspective view showing a third embodiment of the packaged food of the present invention, and FIG. 3B is a perspective view showing a fourth embodiment of the packaged food of the present invention.

FIG. 4 is a perspective view showing a fifth embodiment of the packaged food according to the present invention in a partially cut state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Food 2 Inner container 3 Outer container 4 Oxygen absorber 5 Oxygen detector 7 Inner container door

Claims (27)

[Claims] Claims: 1. A food (1) such as a cut-off node is filled with a gas-filled container in an inner container (2) having gas barrier properties and sealed.
This inner container (2) is replaced with an outer container (3) having gas barrier properties.
A packaged food product characterized by being filled with gas replacement and sealed therein. 2. A container (2) having a gas barrier property and having an oxygen scavenger and containing and sealing a food (1) such as shavings and the like, and sealing the inner container (2) to an outer container (2) having a gas barrier property. 3) A packaged food product characterized by being filled with gas replacement and sealed therein. 3. A food (1) such as a shaving node is filled with a gas-replacement filling and sealed in an inner container (2) having a gas barrier property,
A packaged food characterized in that the inner container (2) is housed and sealed in an outer container (3) having gas barrier properties and provided with an oxygen scavenger. 4. A food (1) such as a cut-off node is housed and sealed in an inner container (2) having a gas barrier property and provided with a deoxidizer, and the inner container (2) is provided with a gas barrier property and has a gas barrier property. A packaged food characterized by being housed and sealed in an outer container (3) provided with an oxygen agent. 5. A container (2) having a gas barrier property and having an oxygen scavenger and containing a food (1) such as a shaved knot, and packing it with a gas replacement. A packaged food characterized in that it is housed and sealed in an outer container (3) provided with an oxygen absorber and is housed in an outer container (3) having a gas barrier property and packed by gas replacement. 6. A container (2) having a gas barrier property and provided with a deoxidizing agent, wherein the food (1) such as a cut-off node is contained and sealed, or is contained in a container (2) having a gas barrier property. A packaged food product which is packed by gas replacement filling, and the inner container (2) is housed in an outer container (3) having a gas barrier property and provided with an oxygen scavenger and packed by gas replacement filling. 7. A food (1) such as a shaved knot is contained in an inner container (2) having a gas barrier property and provided with an oxygen scavenger, and is filled and packed by gas replacement, and the inner container (2) has a gas barrier property. A packaged food product which is contained in an outer container (3) provided with an oxygen scavenger and packaged by gas replacement filling. 8. A food (1) such as a shaving node is filled with a gas-replacement filling and sealed in an inner container (2) having a gas barrier property,
This inner container (2) is used as an outer container (3) having a liquid barrier property.
A packaged food characterized by being housed and sealed inside. 9. A food (1) such as a cut-off node is housed and sealed in an inner container (2) having a gas barrier property and provided with an oxygen scavenger (4), and the inner container (2) has a liquid barrier property. A packaged food product which is housed and sealed in an outer container (3). 10. An inner container (2) having a gas barrier property and provided with a deoxidizer (4), containing a food (1) such as shaved knot, and packing it by gas replacement. Is sealed in an outer container (3) having a liquid barrier property. 11. The packaged food according to claim 8, wherein the outer container (3) also has gas barrier properties. 12. The packaged food according to claim 8, wherein the outer container (3) also has a gas barrier property and is provided with a deoxidizer (4). 13. The gas container according to claim 11, wherein the inside of the outer container is gas-filled and packed.
The packaged food as described. 14. An oxygen detector (5) that discolors due to oxygen in both or one of the outer container (3) and the inner container (2).
The packaged food according to any one of claims 1 to 13, wherein the packaged food is enclosed. 15. The apparatus according to claim 1, wherein all or a part of both or one of the outer container (3) and the inner container (2) is capable of seeing through the inside. Each packaged food. 16. The packaged food according to claim 1, wherein a plurality of inner containers (2) in which the food is packaged are sealed in the outer container (3). 17. The packaged food according to claim 1, wherein the food (1) is sealed in the inner container (2) for each use. 18. The packaged food according to claim 1, wherein the outer container (3) has a gas barrier property for a longer period than the inner container (2). 19. The outer container (3) has an inner container inlet / outlet (7), and the outer container (3) and the inner container inlet / outlet (7) have a longer gas barrier property than the inner container (2). The packaged food according to any one of claims 1 to 18, characterized in that: 20. The packaged food according to claim 1, wherein the inner container inlet / outlet (7) of the outer container (3) has a gas barrier property or a liquid barrier property or both. 21. The packaged food product according to claim 1, wherein a sealing mechanism (11) is provided at an inner container opening (7) of the outer container (3). 22. An inner container inlet / outlet (7) of the outer container (3) has a gas-barrier film-like or sheet-like shape.
22. Each of the packaged foods according to claim 1, wherein the packaged food is air-tightly covered with a plate-like covering material (8). 23. An inner container inlet / outlet (7) of the outer container (3) is a film-, sheet-, plate-like or other covering material (8) having gas barrier properties and provided with an oxygen scavenger (4). 23. An air-tight coating.
Each packaged food as described. 24. The packaging according to claim 1, wherein the inner container opening and closing port (7) of the outer container (3) is air-tightly covered with a metal covering material (9). Food. 25. A metal covering material (9) in which an inner container opening (7) of an outer container (3) is provided with an oxygen scavenger (4).
The packaged food according to any one of claims 1 to 23, wherein the packaged food is air-tightly coated. 26. The packaged food according to claim 1, wherein the gas to be replaced is an inert gas such as a nitrogen gas, a carbon dioxide gas or a mixed gas thereof. 27. Both a carbon dioxide generating type which generates carbon dioxide when the oxygen scavenger (4) absorbs oxygen, and a carbon dioxide non-generating type which does not generate carbon dioxide even when absorbing oxygen. 27. The packaged food according to claim 2, wherein the packaged food is any one of the packaged foods.