JPH054668A - Lunch box - Google Patents

Abstract

PURPOSE:To prevent alteration, putrefaction, deterioration or the like of fruit and vegetables which require freshness and to obtain a lunch box for permitting long-term preservation by placing a storage bag which houses fruit and vegetables and is equipped with an adsorbing means for adsorbing ethylene gas generated from the fruit and vegetables. CONSTITUTION:An adsorbing means 30 for adsorbing ethylene gas generated from fruit and vegetables is provided in a storage bag 10. The adsorbing means 30 is adsorbent powder which has been molded into a solid, a cube for example. Since the adsorbent powder 30 for adsorbing ethylene gas generated from the fruit and vegetables is thus provided, the ethylene gas can be removed from the storage bag 10 so that freshness of the fruit and vegetables can be kept sufficiently fresh. In addition the fruit and vegetables can be housed into the storage bag 10 when they are cropped with ethylene gas removed, and then the storage bag 10 can be placed inside a lunch box 1.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lunch box capable of preserving food in a lunch box to some extent for a certain period of time in a state filled with an inert gas by preventing deterioration such as deterioration of taste of the box lunch or decay or deterioration. More particularly, the present invention relates to a bento container capable of storing fruits and vegetables for a long period of time.

[0002]

BACKGROUND OF THE INVENTION Although lunch boxes are often eaten at travel destinations, recreation areas, workplaces, etc., bento boxes have a certain period of time, for example, within 6 hours after production, due to the risk of food poisoning especially in summer. Had to serve for a meal within. Therefore, from the standpoint of the manufacturer of lunch boxes, this means that the lunch boxes must be manufactured within a certain time by calculating backward from the eating time, which results in a rise in the lunch box manufacturing cost and mass production of lunch boxes. Was hindering
In addition, from the standpoint of eating lunches, there is also a problem that the freshness, flavor, taste, etc. of the bento after a lapse of time has been deteriorated.

[0003] Therefore, as a result of extensive studies to enable the bento to be stored for a long period of time, the present inventor filled an inert gas in a bento container sealed with a film to feed food with an inert gas. By storing in the atmosphere, it is possible to suppress the oxidation and respiration of food, and also to suppress the evaporation of water in the food, as a result, not only prevent spoilage of food, food freshness, flavor, It was found that the bento can be stored for about a month without degrading the scent.

However, fruits used for salads, etc.
The rape and vegetables have already been spoiled due to the respiratory action since the time of harvest, and when they are placed in a lunch box and placed in an inert gas atmosphere, the spoilage may be significantly progressed. Therefore, the above-mentioned method for preserving bento invented by the present inventor may not be sufficiently effective for fruits and vegetables requiring freshness.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it can be preserved for a long period of time by preventing deterioration or spoilage or deterioration of fruits, vegetables and the like that require freshness. It is intended to provide a lunch box container.

[0006]

SUMMARY OF THE INVENTION In order to achieve this object, a lunch box container according to the present invention is a lunch box container sealed with a film, filled with food, and filled with an inert gas in an inner space of the container. It is characterized in that a storage bag is provided in the bento container for accommodating fruits and vegetables and having an adsorbing means for adsorbing ethylene gas generated from fruits and vegetables.

As described above, since the adsorbing means for adsorbing ethylene gas generated from fruits and vegetables is provided, the ethylene gas can be removed from the storage bag and the freshness of the fruits and vegetables can be maintained sufficiently fresh. You can Moreover, the fruit,
When the vegetables are harvested, the fruits and the like can be stored in a storage bag to remove ethylene gas, and then the storage bag is placed in the bento container.

[0008] Therefore, fruits that require freshness,
It is possible to suppress the respiratory action of vegetables and vegetables from the time of harvest, and when the bento container, especially fruits that require freshness, and vegetables and vegetables are also served, effectively prevent these alterations or spoilage or spoilage, etc. Can be stored for a long time. Also, of course, since the inside of the bento container is in an inert gas atmosphere, it not only prevents the spoilage of other foods, but also
It can be stored between containers without deteriorating the freshness, flavor and aroma.

[0009]

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, a lunch container according to an embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of a lunch box container according to an embodiment of the present invention, and FIG. 2 is a sectional view of the lunch box container shown in FIG.

As shown in FIG. 1, a bento container 1 according to the present embodiment comprises a cooked rice serving portion 2 for serving cooked rice, which is a staple food, and a side serving serving portion 3 for serving side dishes, salads and the like. In other words, the main meal portion 2 is defined by the wall 4 raised from the bottom wall of the main container 1, and similarly, the side meal portion 3 is raised from the bottom wall of the main container 1. It is defined by a wall 5. These walls 5 are lower than the side walls of the container 1.

The lunch box container 1 according to this embodiment is provided with a flange 6 on the entire circumference thereof. This flange 6
The film 7 covering the front of the lunch container is sealed. The sealing means may be any known one and is not limited in any way.

The film 7 is provided with a self-sealing member 11, 1
2 is provided. The self-sealing member 11 keeps the inner space of the container 1 airtight when the inert gas filling needle 21 is inserted, and can fill the inner space of the container 1 with the inert gas from the filling needle 21. On the other hand, when the inert gas filling needle 21 is removed, the internal space of the container 1 is kept airtight. The self-sealing member 11 is specifically a substance having a low hardness and an adhesive property, and in view of food safety, it is, for example, a light-receiving adhesive substance, silicone rubber, or silicone gel. . Self-sealing member 12
Is similarly configured.

Therefore, at the time of filling with the inert gas, the inert gas filling needle 21 and the air discharge needle 22 are inserted into the self-sealing members 11 and 12, respectively. Since the areas around the filling needle 21 and the discharging needle 22 are in close contact with each other by the self-sealing members 11 and 12, gas or air is maintained without leaking from the self-sealing members 11 and 12. Next, the inert gas filling needle 21 starts filling the inert gas, and the discharge needle 22 discharges the air inside the container 1. As a result, after a lapse of a predetermined time (several seconds), the inside of the container 1 can be replaced with air by the inert gas. After that, when the filling needle 21 and the discharging needle 22 are removed, the inner space of the container 1 becomes self-sealing members 11 and 12.
Can be kept airtight. In this way, since the inert gas can be filled into the bento container 1 by an extremely simple filling operation, this filling operation can be completed in a short time (for example, several seconds), and therefore, it can be stored for a long time. Bento can be mass-produced.

The inert gas is, for example, nitrogen gas, and it goes without saying that it may be another gas. In short, any gas can be used as long as it can suppress the oxidation and respiration of food.

In the present embodiment, a storage bag 10 for storing fruits and vegetables that particularly need freshness is arranged in the side serving portion 3 of the bento container 1. The storage bag 10 is formed of a film, and a film having small oxygen permeability and excellent safety is preferable as the film, and specifically, a polyethylene film, a polypropylene film, a polyester film, a pullulan film or the like is used. To use. Of these, the pullulan film is most preferable, and the pullulan film is composed of a water-soluble, non-gelling viscous polysaccharide, and is edible and has a low oxygen permeability. In addition, this pullulan film has an advantage that the labor for removing the film when heating and heating the bento can be saved.

Further, in this embodiment, an adsorbing means for adsorbing ethylene gas generated from fruits and vegetables is provided in the storage bag 10. This suction means is, for example, as shown in FIG.
As shown in, the adsorbent powder 30 is molded into a solid in a cubic shape. The adsorbent powder 21 is, for example, coral powder, zeolite powder, powder in which silver is supported on zeolite, Otaniishi powder, or acetate proof.
In particular, in the case of a powder carrying silver on zeolite,
It can also exert antibacterial and bactericidal effects.

As described above, since the adsorbent powder 30 for adsorbing ethylene gas generated from fruits and vegetables is provided, this ethylene gas can be removed from the storage bag 10 and the freshness of fruits and vegetables can be sufficiently fresh. Can be maintained.
Moreover, when the fruits and vegetables are harvested, the fruits and the like can be stored in the storage bag 10 to remove ethylene gas, and then the storage bag 10 is arranged in the lunch container 1.
Therefore, the respiratory action of fruits and vegetables that require freshness can be suppressed from the time of harvest, and even when fruits and vegetables that require freshness are placed in the bento container 1, the deterioration or decay of these Or effective prevention of deterioration,
Can be stored for a long time.

Next, a modified example of the suction means will be described. Although not specifically shown, the adsorbing means may store the adsorbent powder in a powder state in a bag and dispose the adsorbent powder in the storage bag 10.
In this case as well, the same action and effect as those described above are exhibited.

Further, the adsorbing means is an adsorbing film in which adsorbent powder is mixed, and the accommodating bag 10 may be molded from this adsorbing film. The present inventor conducted an experiment on the storage period of salad using this adsorption film.
As a result, tomatoes had a storage period of about 3 days when the adsorption film was not used, but when the adsorption film was used, they could be preserved while maintaining the freshness for about 6-8 days. Regarding the lettuce, the storage period was about 3 days when the film was not used, but when the adsorption film was used, the lettuce could be stored while maintaining the freshness for about 10-12 days. Furthermore, apples could be stored only for about 15-20 days when the film was not used, but could be stored for about 70-90 days while maintaining the freshness when the adsorption film was used. .

Further, the suction means may be constructed as follows. That is, as shown in FIG. 3, a resin sheet 33 in which the adsorption film 31 mixed with adsorbent powder is laminated on a resin base material 32 is prepared, and the storage bag 10 is formed from the resin sheet 33. Is also good. Also in this case, ethylene gas can be adsorbed, and vegetables and vegetables can be stored while being kept fresh. The resin base material 32 is a thermoplastic film or the like.

The present invention is not limited to the above-described embodiments, and it is needless to say that the present invention can be variously modified, and the material of the storage bag 10 is not limited to the film of the embodiment, and other materials may be used. good.

[0022]

As described above, according to the present invention, fruit,
Since the adsorbing means for adsorbing the ethylene gas generated from the vegetables is provided, the ethylene gas can be removed from the storage bag, and the freshness of the fruits and vegetables can be maintained sufficiently fresh. Moreover, when the fruits and vegetables are harvested, they can be stored in a storage bag to remove ethylene gas,
After that, this storage bag is placed in the bento container. Therefore, it is possible to suppress the respiratory action of fruits and vegetables that require freshness from the time of harvest, and even when the fruits and vegetables that require freshness are arranged in a lunch box, these alterations or decay or It can be stored for a long time by effectively preventing deterioration and the like. Also, of course, since the inside of the bento container is in an inert gas atmosphere, it not only prevents spoilage of other foods, but also can be stored between the containers without deteriorating their freshness, flavor and aroma. .

[Brief description of drawings]

FIG. 1 is a perspective view of a lunch box container according to an embodiment of the present invention.

2 is a cross-sectional view of the lunch container shown in FIG.

3 is a cross-sectional view of a resin sheet for forming the storage bag shown in FIG.

[Explanation of symbols]

1 lunch box 7 film 10 storage bags 30 Adsorbent powder (adsorption means)

Claims (6)

[Claims] 1. A bento container, which is sealed with a film, is filled with food, and is filled with an inert gas in an inner space of the container.
A lunch box container, characterized in that a storage bag provided with an adsorbing means for adsorbing ethylene gas generated from vegetables and vegetables is disposed in the lunch box container. 2. The lunch box container according to claim 1, wherein the adsorbing means is made of an adsorbent powder formed into a solid. 3. The lunch box container according to claim 1, wherein the adsorption means is made of an adsorbent powder contained in a bag. 4. The lunch box container according to claim 1, wherein the adsorbing means is made of a film mixed with adsorbent powder, and the storage bag is made of the film. 5. The storage bag is formed from a resin sheet formed by laminating a film in which adsorbent powder as adsorbing means is mixed with a resin base material. Lunch box described. 6. The adsorbent powder is a powder selected from the group consisting of coral powder, zeolite powder, powder of silver supported on zeolite, Otaniishi powder, and acetate proof. The lunch box container according to claim 5.