JP2003335377A - Food container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a food container which keeps freshness of stored food for a long period of time. <P>SOLUTION: Carbide of a plant material such as bamboo charcoal is placed inside the container exhibiting an appearance of a bamboo epidermis. It also includes a pair of longitudinally split bamboo tube pieces, wherein the pieces are combined like a tube and the inner walls of the pieces are carbonated. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a container used for storing cooked foods such as sushi, sandwiches, rice balls, hors d'oeuvres and side dishes, fruits, raw fish and seafood and vegetables. Specifically, it relates to a container that these foods have.

[0002]

2. Description of the Related Art Cooked foods and fruits such as sushi, sandwiches, rice balls, hors d'oeuvres, and side dishes, as well as seafood and vegetables that are eaten raw are stored and transported by folding, placing them in containers such as heavy boxes or paper boxes. . However, it is difficult to maintain the freshness of the food contained in these containers for a long time.

[0003]

In view of these problems, the present invention intends to provide a food container which maintains the freshness of the food contained therein for a long time.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a food container in which a charcoal of a plant material is arranged inside a container having the appearance of a bamboo skin.

The charcoal-based material may include a charcoal-based material of bamboo. The carbide may include bamboo charcoal.

[0006] In the food container, the carbide may be separated from the food by a breathable shield.

The container may be constructed to include a pair of vertically divided cylindrical bodies, and the vertically divided cylindrical bodies may be combined in a cylindrical shape.

The container may include bamboo.

The container may be configured to include at least one piece of a bamboo tube which is vertically divided.

The container may be configured to include a bamboo tube in which one split is formed vertically, and end faces of the bamboo tube formed by the split may be joined to each other.

Further, the gist of the present invention is that a cap is provided, and the tubular portions of the bamboo tube are connected to each other at both ends of the one piece, and the pieces are tubular. It is the container for foods in which the cap is fitted across the inner circumference of the cap to the end of the cylindrical part formed by combining the cap and the cylindrical part adjacent to the end.

In the food container, at least a part of the carbide may be carbonized on the inner wall surface of the bamboo.

Further, the gist of the present invention includes a step of applying a flame to the inner wall surface of bamboo to carbonize the inner wall surface.
It is a method for manufacturing bamboo used for food containers.

The bamboo can be a bamboo tube without knots or hollow knots.

In the method of manufacturing bamboo used for the food container, splits may be formed in the longitudinal direction of the bamboo tube.

In the method for producing bamboo used for the food container, the surface of the bamboo may be cooled.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. In the exploded view of FIG. 1, the food / food container 2 of the present invention includes sushi, sandwiches, hors d'oeuvres,
It is provided with a saucer piece 6 on which cooked foods such as side dishes, fruits, seafood and vegetables to be eaten raw are placed, and an upper lid piece 8 which is a lid of the saucer piece 6. The saucer piece 6 and the upper lid piece 8 are made of a half-divided bamboo tube, and both are vertically stacked to form a cylindrical object. The saucer piece 6 is connected with the tubular parts 7 of bamboo remaining at both ends, and the saucer piece 6 and the upper lid piece 8 are joined together in the shape of a cylinder. Part 9
The cap 15 is fitted to cover the cylindrical portion 7 adjacent to.

The cap 15 includes a cylindrical portion 16 having an inner diameter slightly larger than the outer diameter of the cylindrical object. The cylindrical portion 16 is made of sliced bamboo and has a circular sealing plate portion 18 on one end surface. The cylindrical portion 16 is sealed at one end. For stability, the outer wall surface of the cap 15 is flattened at a lower portion to form a flat surface portion 30.

The cap 15 may be made of resin. It may be made of paper. Alternatively, a circular sheet made of paper, resin, non-woven fabric, foil or a composite product thereof may be attached to the end surface of the cylindrical object without including the cylindrical portion 16. In this aspect, the sheet is preferably releasably attached to the end surface of the cylindrical object.

FIG. 2 is a sectional view of the food container 2 taken along the line AA '. Each reference numeral corresponds to that in FIG. Inner wall surface of the cylindrical object 12, that is, inner wall surface 1 of the tray piece 6
9 and the inner wall surface 17 of the upper lid piece 8 are carbonized in advance by heating the inner wall surface of the raw material bamboo cylinder in the air using a burner or the like. As a result, the layer 29 made of carbide of bamboo is formed on the inner wall surface of each of the saucer piece 6 and the upper lid piece 8.

When the food 4 directly touches the layer 29 made of carbide, the food 4 may be contaminated with the carbide.
Is at least partially covered with a covering sheet (not shown). As the covering sheet, aluminum foil, non-woven fabric,
A sheet made of paper, paraffin paper, net, or the like is preferably used, and these are used alone or various sheets are stacked.

FIG. 3 shows another embodiment of the food container according to the present invention.
Shown in. In the vertical cross-sectional view of FIG. 3, the food container 22 for food according to the present invention includes a saucer piece 26 on which the food 4 is put and placed, and an upper lid piece 28 which is a lid of the saucer piece 26. The saucer piece 26 and the upper lid piece 28 are made of a half-divided bamboo tube, and the both are vertically placed to form a cylindrical object 32. Saucer piece 2
6 and the upper lid piece 28 have partition walls 30 at both ends.
The partition wall 30 has a semi-circular shape, and the arc-shaped edges of the partition wall 30 are provided on both end surfaces of the saucer piece 26 and the upper lid piece 28, respectively.
Alternatively, they are attached so as to be arranged along the outer peripheral edge of the upper lid piece 28.

Both ends of the cylindrical member 32 are respectively attached to the side lid 1.
4 is fitted on the opening side. The side lid 14 includes a cylindrical portion 36 having an inner diameter slightly larger than the outer diameter of the cylindrical object 32,
The cylindrical portion 36 is made of a sliced bamboo, and a circular sealing plate 38 is attached to one end surface of the cylindrical portion 36 to seal the cylindrical portion 36 at one end portion.

A space 40 is formed between the partition wall 30 and the sealing plate 38 with the cylindrical member 32 fitted in the side cover 14, and bamboo charcoal 42 is arranged in the space 40. A plurality of small holes 44 are formed in the partition wall 30. Thereby, the partition 30
Is a breathable shield 31 that separates the food 4 from the bamboo charcoal 42. The bamboo charcoal 42 is a bag 46 made of breathable material.
It is stored in.

Furthermore, the inner wall surface of the cylindrical object 32, that is, the inner wall surfaces of the tray piece 26 and the upper lid piece 28 are carbonized by previously heating the inner wall surface of the raw bamboo tube in the air. As a result, a layer 48 of carbide of bamboo is formed on the inner wall surfaces of the tray piece 26 and the upper lid piece 28.

When the food 4 directly touches the layer 48 made of carbide, the food 4 may be contaminated with the carbide.
Is at least partially covered with a covering sheet (not shown). As the covering sheet, aluminum foil, non-woven fabric,
A sheet made of paper, paraffin paper, net, or the like is preferably used, and these are used alone or various sheets are stacked.

FIG. 4 is a sectional view taken along the line AA of the food container 22 shown in FIG. The reference numerals correspond to those in FIG. For stability, the outer wall surface of the side lid 14 is flattened at the lower portion to form a flat surface portion 50.

Food container 2 showing still another embodiment of the present invention
FIG. 5 shows an exploded view of 2a, and FIG. 6 shows a sectional view taken along a line. 5 and 6, the food and food container 22a of the present invention is
It is provided with a saucer piece 26a on which food is put and placed, and an upper lid piece 28a. The saucer piece 26a and the upper lid piece 28a consist of a half-cylindrical piece having a C-shaped cross section obtained from a bamboo cylinder half-divided vertically.
Both are placed one above the other to form a cylindrical object. The cap 15a is fitted to the end of this cylindrical object. Saucer piece 2
A storage portion 52 for storing the bamboo charcoal 22a is provided at the bottom of the 6a. The storage section 52 is formed below the partition wall 54 (air-permeable shield 31a) having air permeability. Food 4 is septum 5
4 is mounted on. In the present invention, the bamboo charcoal 22a may be housed in a breathable bag (breathable shield) without the partition wall 54, and may be placed in the container together with the food 4.

Further, the inner wall surfaces of the saucer piece 26a and the upper lid piece 28a are carbonized by heating the inner wall surface of the raw bamboo tube in the air. As a result, a layer 48a made of bamboo charcoal is formed on the inner wall surfaces of the saucer piece 26a and the upper lid piece 28a.

FIG. 7 is a sectional view in section of a food container 22b showing still another embodiment of the present invention. In FIG. 7, a storage portion 52b for storing the bamboo charcoal 22b is provided on the ceiling portion of the upper lid piece 28b.

Further, the inner wall surfaces of the saucer piece 26b and the upper lid piece 28b are carbonized by heating the inner wall surface of the raw bamboo tube in the air. As a result, a layer 48b made of bamboo charcoal is formed on the inner wall surfaces of the saucer piece 26b and the upper lid piece 28b.

FIG. 8 illustrates another aspect of the present invention. As shown in the vertical sectional view of FIG. 8, in the food container 22d,
Cylindrical object with knots is formed by splitting a saucer piece 26d and an upper lid piece 28d each of which is a half-cylindrical piece having a C-shaped cross section obtained from a bamboo tube that is divided into two parts with the nodes 66 attached to both ends. 60d is formed. Elastic annular bodies 62 such as rubber bands are fitted on the outer peripheries of both ends of the tubular member 60a. The food 4 and the bamboo charcoal 22c are housed inside (hollow part) of the tubular object 60d. The bamboo charcoal 22d is stored in a bag 26d (a breathable shield 31d) made of a breathable material.

Furthermore, the inner wall surface of the tray piece 26d and the upper lid piece 28d is carbonized by heating the inner wall surface of the raw material bamboo tube with a burner or the like in the air. As a result, the saucer piece 2
A layer 48d made of bamboo charcoal is formed on the inner wall surfaces of 6d and the upper lid piece 28d.

FIG. 9 illustrates yet another aspect of the present invention. As shown in the perspective external view of the main part of FIG. 9, in the food container 22e, a cross-section C obtained from a bamboo cylinder bisected by sliced slices.
The saucer piece 26e composed of a half-cylindrical piece and the upper cover plate 28e are joined together to form a tubular article 60e having a semi-cylindrical section. Caps 15 are provided on both ends of the tubular object 60e.
e is fitted. The food and bamboo charcoal are stored inside (hollow part) of the tubular object 60e. Bamboo charcoal is stored in a bag (breathable shield) made of breathable material. Saucer piece 26
The inner wall surface of e is carbonized by heating the inner wall surface of the raw bamboo cylinder in the air. As a result, the saucer piece 26e
A layer made of bamboo carbide is formed on the inner wall surface of the building.

With such an embodiment shown in FIGS. 1 to 9,
When the food is stored in the food container of the present invention, the food is fresh.

For example, the food container 2 shown in FIG. 1 contains normal paper-wrapped mackerel sushi stored in a room for 24 hours, and the normal paper-packaged mackerel sushi stored in a room for 24 hours. As a result of eating and comparing the foods with each other, both of them did not rot, but the mackerel sushi stored in the food container 2 kept the original taste, while the food container 2 had the original taste. The mackerel sushi that was stored without being put in it had a bad taste, and its commercial value was significantly reduced.

The strawberry wrapped with aluminum foil and placed in the food container 2 shown in FIG. 3 and allowed to stand at 14 to 17 ° C. for 5 days maintained the original freshness in taste and appearance. What was left in the food container 2 under the same conditions other than
Both the taste and appearance deteriorated, and the original freshness was not maintained.

These freshness-retaining effects are brought about by the excellent gas molecule adsorption effect by the bamboo charcoal and the charcoal-based bamboo present inside the food container. Bamboo charcoal or charcoal of bamboo efficiently adsorbs gas molecule components that are unfavorable for maintaining freshness in the food container, and cleans the air in the food container, thereby maintaining the freshness of the food product.

In the present invention, when a layer made of a carbide of bamboo is formed on at least a part of the inner wall surface of the container, bamboo charcoal (bamboo charcoal 42, 22a, 22c, 22d, etc.) should be placed in the container. Even without it, the effect of maintaining the freshness of food can be obtained. Further, when bamboo charcoal (42, 22a, 22c, 22d, etc.) is contained in the container, the effect of maintaining the freshness of the food can be obtained even if the layer made of carbide of bamboo is not formed on the inner wall surface of the container. .

In the present invention, it is most preferable that a layer made of a carbide of bamboo is formed on at least a part of the inner wall surface of the container, because it does not take up a space for the adsorbent.

The formation of a layer made of carbide of bamboo on the inner wall surface of the container is performed by applying a gas burner flame to the inner wall surface of the sliced bamboo cylinder to burn the inner wall surface. As the gas, propane gas, city gas, etc. are used. The flame temperature is preferably 1000 to 1200 ° C.

When a flame is applied to the inner wall surface for a long time, the surface of the skin is carbonized and the color of the skin is darkened. Therefore, it is preferable to apply the flame at a high temperature for a short time. Further, by applying a flame to the inner wall surface while cooling the skin surface, it is possible to reduce the occurrence of dark coloring on the skin surface even during a long-term treatment. Cooling can be performed by blowing wind or cold air onto the skin surface. It is also effective to carry out the carbonization treatment while bringing the skin surface into contact with water by, for example, applying water to the skin surface.

When carrying out this carbonization treatment, a bamboo cylinder with no knots or a hollow knot with a knot is used, and the flame is discharged from one opening through the hollow part of the cylinder to the other opening. It is preferable to apply a uniform carbonization. Further, it is preferable in reducing warpage after the treatment. Further, it is preferable to radiate the flame in the longitudinal direction of the bamboo tube for uniform carbonization. Burn the inner wall and split the bamboo vertically. The diameter of the flame is preferably larger than the inner diameter of the bamboo tube in order to carry out uniform carbonization.

When a flame of a gas burner is applied to the inner wall surface of the bamboo cylinder and the carbonization treatment is performed by applying the flame from one opening through the hollow part of the cylinder and the flame exiting from the other opening, the gas is burned from the gas burner. Being sucked in by the momentum of the fire
A large amount of air flows into the hollow part of the bamboo cylinder as an accompanying air flow and burns the inner wall surface of the bamboo cylinder to incinerate it. In order to carbonize the inner wall surface of the bamboo cylinder without ashing it, it is preferable to heat the inner wall surface in a state of oxygen being cut off. It is desirable to apply a gas burner flame to the wall.

It is preferable to carry out the carbonization treatment of the bamboo cylinder with the gas burner by introducing a flame from both ends of the bamboo cylinder alternately, for uniform carbonization.

It is possible to divide the bamboo into vertical pieces and then apply flames to the divided pieces, but since the curved surface of the bamboo may be greatly warped by this treatment, in this case, the temperature is further shortened. Time processing is required.

Since bamboo cannot be ignored because of its biological characteristics, bamboo may include knots depending on the length used. It is preferable to use a part having a knot hollowed out rather than using a part without a knot in order to reduce warpage after the treatment. It may be preferable that the knots have a change in appearance as well.

In the industrial implementation of the present invention, there is a problem that it is difficult to obtain a large number of bamboo cylinders having a uniform diameter from a natural product, but in the present invention, a cross-sectional view taken along the line of FIG. As shown in FIG. 5, after inserting a vertical cut (split) 72 having a predetermined width W, which is continuous from one end of the bamboo barrel 70 to the other end, the bamboo wall 70 is subjected to carbonization treatment of the inner wall surface by the above flame. As a result, as shown in FIG. 10B, the inner wall surface is carbonized to form the carbide layer 104, the bamboo cylinder 70 is warped in the radial direction, and the portion of the cut 72 is adhered to the bamboo cylinder 70 before the treatment. A bamboo cylinder 70a having a smaller diameter can be obtained. The larger the width W, the bamboo tube 7 after processing
The diameter of 0a becomes smaller. Utilizing this phenomenon, the width W is set for each of a large number of bamboos having different diameters, that is, the width W is increased for a bamboo cylinder having a larger diameter, and the cut 72
By forming the ridges and carbonizing the inner wall surface with the above flame, a large number of bamboo cylinders having a substantially constant diameter can be manufactured. This facilitates the industrial implementation of the present invention.

As shown in FIG. 10 (c), both sides of the incised cut (split) 72 are connected to each other by connecting means such as passing a portal nail 74 or a staple. Alternatively, the break 72
It is also possible to apply a thermosetting adhesive or the like to the end surface 76 of the above and perform the above treatment to connect both sides of the cut 72 by adhesion.

It is preferable that the main portion of the tray piece and the like of the container of the present invention is made of bamboo from the viewpoint of appearance and production.
In addition, the bamboo material itself contributes to the effect of maintaining freshness. But,
Since it is sometimes difficult to prepare a natural product of bamboo having the optimum size for the food to be stored, the food container of the present invention may be made by processing resin, wood or cardboard. However, in this case, since it is difficult to form a layer made of bamboo charcoal on the inner wall surface of the container, the charcoal of plants such as bamboo charcoal is stored in the container. Further, in this case, it is preferable that the container is formed so that the container has the appearance of a bamboo skin.

It is obvious that the appearance of the container looks like a skin of bamboo to give a clean feeling, and it is a container for keeping freshness, and the effect of maintaining the freshness of the charcoal of bamboo is adopted. Thus, the commercial value of the container and the food contained in the container and set with the container increases.

In order to make the appearance of the container look like that of a bamboo skin, a resin colored in green may be molded into a bamboo shape. The surface of the container may be printed with a picture or photograph resembling a bamboo skin. A picture resembling a bamboo skin may be drawn on the surface of the container.

The bamboo charcoal used in the food container of the present invention is
Bamboo is fired by a method similar to charcoal firing. In the present invention, instead of bamboo charcoal, charcoal obtained by firing other plant materials such as charcoal or activated carbon may be used, but bamboo charcoal is flat and easy to store, and bamboo charcoal It is preferable to use it because it matches the appearance of the container and further enhances the commercial value.

The process of burning the inner wall surface may be performed after vertically dividing the bamboo.

The above description has been given of the mode in which a tubular object such as a bamboo tube is vertically divided and used as the tray or the lid of the container. However, in the present invention, the tubular object such as a bamboo tube is not vertically divided. You may use it as it is as a container. FIG. 11 shows an example of the embodiment of the present invention used in this manner. Figure 1
In the vertical cross section of the food container 22f of 1,
The food 4 is stored in the hollow portion of the bamboo tube 106 in which the inner wall surface is carbonized to form the carbide layer 104, and both ends of the bamboo tube 106 are sealed by the sealing sheets 110. The sealing sheet 110 is made of paper lined with aluminum foil,
It is adhered to the end surface of the bamboo tube 106 with an adhesive, and peels or breaks the sealing sheet 110 when the food 4 is taken out.

Further, as shown in the longitudinal sectional view of FIG. 12, the bamboo tube may be divided into two pieces in a sliced state. Lid bamboo cylinder 114
The main body bamboo tube 116 is connected via the connection ring 112 to form a tubular food container 22g, and the food 4 is stored therein. The connection ring 112 is fixed to the lid bamboo cylinder 114 while being externally fitted thereto, and is externally fitted to the main body bamboo cylinder 116. Inner wall surfaces of the lid bamboo cylinder 114 and the main bamboo cylinder 116 are carbonized to form a carbide layer 104. Both ends of the food container 22g are sealed with sealing sheets 110, respectively.

Further, in another embodiment of the present invention, as shown in the longitudinal sectional view of FIG. 13, the food container 22 of the present invention is shown.
The h is composed of a main body bamboo cylinder 116a and a cover bamboo cylinder 114a fitted to the main body bamboo cylinder 116a at their peripheral edges. Body bamboo cylinder 1
At the bottom of 16a, there is a knot 118 whose inside is hollowed out, and a bottom plate 122 is installed using the knot 118 as a stopper. The outer end surface of the lid bamboo cylinder 114a is the sealing sheet 110.
It is sealed with. Bamboo lid 114a and main body bamboo barrel 116
a is connected via a connecting ring 123 to form a cylindrical food container 22h, and the food 4 is stored therein. The connecting ring 123 is fixed to the lid bamboo cylinder 114a while being externally fitted thereto, and is externally fitted to the main bamboo cylinder 116a. Body bamboo tube 116a
A carbide layer 104 is formed on the inner wall surface of the.

In yet another aspect of the invention, FIG.
4, a food container 22i of the present invention is shown.
Is composed of a main body bamboo cylinder 116b and a cover bamboo cylinder 114b fitted around the main body bamboo cylinder 116b at their peripheral edges. Body bamboo tube 11
At the bottom of 6b, there is a knot 118 with a hollowed inside,
The bottom plate 122b is installed using the joint 118 as a stopper. A large number of small holes 130 are provided in the bottom plate 122b to form partition walls (breathable shield 31i). The bottom side end surface of the main bamboo tube 116b is sealed with a sealing sheet 110b, and the bamboo charcoal 42 is arranged in the space between the bottom plate 122b and the sealing sheet 110b. Also, the lid bamboo cylinder 114
The outer end surface of b is sealed with the sealing sheet 110. The lid bamboo cylinder 114b and the main bamboo cylinder 116b are the connecting ring 12.
3 is connected via 3 to form a tubular food container 22i and the food 4 is stored therein.

Although the mode of the food container of the present invention has been described above, the present invention can be carried out in a mode in which various improvements, modifications and variations are made based on the knowledge of those skilled in the art without departing from the spirit of the present invention. And all of these aspects belong to the scope of the present invention.

[0060]

The food container of the present invention can maintain the freshness of the food contained therein for a long time.

According to the present invention, a uniform carbide layer can be efficiently formed on the inner wall surface of bamboo used in the food container of the present invention.

According to the present invention, bamboo used for the food container of the present invention having a uniform diameter can be efficiently produced from bamboo having a non-uniform diameter.

According to the present invention, a layer of carbide can be formed on the inner wall surface of bamboo used in the food container of the present invention without excessively discoloring the outer surface of the bamboo.

[Brief description of drawings]

FIG. 1 is an exploded view showing a configuration of a food container of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ of the food container of FIG.

FIG. 3 is a vertical cross-sectional view showing another aspect of the food container according to the present invention.

4 is a cross-sectional view taken along the line AA ′ of the food container of FIG.

FIG. 5 is an exploded view showing the configuration of a food container according to still another aspect of the present invention.

6 is a cross-sectional view of the food container of FIG.

FIG. 7 is a cross-sectional view in section of a food container according to still another aspect of the present invention.

FIG. 8 is a vertical sectional view of a food container according to another embodiment of the present invention.

FIG. 9 is a perspective external view of a main part of a food container according to still another aspect of the present invention.

FIG. 10 is a schematic cross-sectional view illustrating a method for manufacturing a bamboo tube used for the food container of the present invention, FIG. 10 (a) is a state of the bamboo tube before carbonization, FIG. 10 (b), and FIG. 10 (c). ) Is the state of the bamboo tube after carbonization.

FIG. 11 is a vertical cross-sectional view of a food container of an aspect different from that of FIG. 9 of the present invention.

FIG. 12 is a vertical cross-sectional view of a food container of an aspect different from that of FIG. 11 of the present invention.

FIG. 13 is a vertical cross-sectional view of a food container of an aspect different from that of FIG. 12 of the present invention.

FIG. 14 is a vertical cross-sectional view of a food container of an aspect different from that of FIG. 13 of the present invention.

[Explanation of symbols]

2, 22, 22a, 22b, 22d, 22e, 22f,
22g, 22h, 22i: food container 4: food products 6, 26, 26a, 26b, 26d, 26e: saucer pieces 8, 28, 28a, 28b, 28d: upper lid pieces 15, 15a, 15e: cap 30: partition wall 31, 31a, 31d, 31i: Breathable shield

Continued front page    F-term (reference) 3E035 AA05 AA09 AA10 AA11 AB01                       BA04 BB02 BC01 BC02 BC10                       BD01 BD10 CA02                 3E061 AA30 AB02 AB09 AC02 DA01                       DB01 DB15 DB20                 3E067 AA11 AB01 BA01A BB01A                       BB13A BB14A BB30A BC03A                       CA09 EA23 EB17 EE25 EE29                       FA01 FC01 GB12 GB15 GD01                       GD02

Claims (14)

[Claims] 1. Inside a container having the appearance of a bamboo skin,
A food container with charcoal of plant material. 2. The charcoal-based material comprises bamboo charcoal-based material.
The food container described in. 3. The charcoal-based material includes bamboo charcoal.
The food container described in. 4. The food container according to claim 1, wherein the carbide is separated from food by a breathable shield. 5. The container according to claim 1, wherein the container is configured to include a pair of vertically divided tubular bodies, and the vertically divided tubular bodies are joined together in a tubular shape. Food container. 6. The food container according to claim 1, wherein the container contains bamboo. 7. The food container according to claim 6, wherein the container includes at least one piece of a bamboo tube that is vertically divided. 8. The food container according to claim 6, wherein the container includes a bamboo tube in which one split is formed in a vertical direction, and the end surfaces of the bamboo tube formed by the split are joined to each other. 9. An end portion of a tubular portion comprising a cap, the tubular portion of the bamboo barrel being connected to both ends of one of the strips, and the strips being joined together in a tubular shape. 9. The food container according to claim 7, wherein the cap is fitted to the cylindrical portion adjacent to the end portion so as to extend over the inner circumference of the cap. 10. The food container according to claim 6, wherein at least a part of the carbide is obtained by carbonizing the inner wall surface of the bamboo. 11. A method for producing bamboo used for a food container, which comprises a step of applying a flame to the inner wall surface of the bamboo to carbonize the inner wall surface. 12. The method for producing bamboo used for a food container according to claim 11, wherein the bamboo is a bamboo tube having no knots or hollow knots. 13. The method for producing bamboo used in a food container according to claim 12, wherein splits are formed in a vertical direction of the bamboo tube. 14. The skin surface of the bamboo is cooled.
14. A method for producing bamboo used for the food container according to any one of 1 to 13.