JPH09295687A - Pack for food vacuum preservation, and vacuum preservation method for food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pack for food vacuum preservation and a vacuum preservation method for food wherein a vacuum preservation becomes possible by a simple structure, a food can be heat-cooked by a heat-cooking container such as microwave oven, and a sufficient heating temperature can be obtained even when a heat-sterilization is required prior to the preservation of a food. SOLUTION: For this pack for food vacuum preservation, a phenomenon wherein by cooling after heating, a steam pressure in a pack main body 2, becomes lower than the atmospheric pressure, is utilized, and this pack is equipped with the pack main body 2 being constituted of a heat resistant material having a specified rigidity, which houses a food F, and an opening/closing lid means 3 which closes and opens an open hole 4 being formed at one part of the pack main body 2. Then, the opening/closing lid means 3 comes into contact with the open hole 4 after the food F has been heated under a housed state, and keeps the inside of the pack main body 2 under a vacuum preservation possible state by tightly joining to the open hole 4 by the atmospheric pressure accompanying the cooling of the inside of the pack main body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food vacuum storage pack and a food vacuum storage method, which enables vacuum storage by a particularly simple operation and can be used for various foods in a heating and cooking container such as a microwave oven. The present invention relates to a food vacuum storage pack that enables food to be cooked and a food vacuum storage method.

[0002]

2. Description of the Related Art Among conventional processed foods, there is one in which the foods can be stored in a pack so that they can be cooked in a microwave oven or the like, but the mechanism for realizing the vacuum preservation state is complicated. However, there is a problem that the structure for releasing the vapor pressure generated in the pack by heating to the outside becomes complicated and expensive, and the vapor pressure cannot be surely released to the outside.

Further, there is a problem that it is often difficult to obtain a sufficient heating temperature when heat sterilization is required prior to storage.

Particularly for commercial packs, there is a demand for simple and inexpensive heating and cooking, and there is a demand for food vacuum storage packs that can meet such demands.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and enables vacuum storage with a simple structure and heats food in a cooking container such as a microwave oven. An object is to provide a food vacuum storage pack and a food vacuum storage method.

Further, according to the present invention, as the internal vapor pressure rises due to heating, the vapor pressure is easily and automatically opened to surely release this vapor pressure to the outside, and the internal pressure is maintained within a predetermined pressure range. An object of the present invention is to provide a food vacuum storage pack and a food vacuum storage method capable of realizing a good heating state.

Further, the present invention provides a food vacuum storage pack and a food vacuum storage method capable of obtaining a sufficient heating temperature even when heat sterilization needs to be performed prior to food storage. Is an issue.

Another object of the present invention is to provide a food vacuum storage pack and a food vacuum storage method capable of boiling and cooking food by combining it with a liquid for cooking food such as soup. And

[0009]

That is, the present invention focuses on the fact that the vapor pressure in the pack body becomes lower than the atmospheric pressure by cooling after heating. A food vacuum storage pack for vacuum storage, in which the food is stored, and a pack body made of a heat-resistant material having a predetermined rigidity and an opening formed in a part of the pack body are closely attached. And an opening / closing lid means for releasing the close contact state to open the opening, and the opening / closing lid means is opened in the opening after heating with the food stored. A food vacuum storage pack, characterized in that the inside of the pack body can be vacuum-stored by abutting it and bringing it into close contact with the opening due to atmospheric pressure as the inside of the pack body is cooled.

A second aspect of the present invention is a food vacuum storage pack for storing food in a vacuum. The pack main body is made of a heat-resistant material having a predetermined rigidity while accommodating the food, and the pack main body. And an opening / closing lid means that closes and closes the opening formed in a part of the opening and opens the opening by releasing the close contact state, and the opening / closing lid means stores the food. For vacuum storage of food, characterized in that the inside of the pack main body can be vacuum-stored by sucking air from the pack main body in this state and adhering it to the opening of the pack main body by atmospheric pressure. It's a pack.

A part of the opening / closing lid means may be pivotally attached to the pack body, and the opening / closing lid means may be easily rotatable at the pivoting portion.

The opening / closing lid means can be brought into and out of contact with the opening, so that the pressing operation can be facilitated.

The opening / closing lid means can be formed integrally with the pack body to further simplify the structure of the food vacuum storage pack.

A third aspect of the present invention is a vacuum food preservation method for vacuum-preserving foodstuffs, which comprises a heat-resistant material having a predetermined rigidity and a pack main body having an opening formed in a part thereof. A heating step of storing and heating food,
After this heating step is completed, the opening closed state holding step of holding the opening and closing lid means in contact with the opening to keep the opening closed, and the atmospheric pressure accompanying the cooling of the inside of the pack body And a vacuum storing step for bringing the inside of the pack body into a vacuum storable state by closely contacting the opening / closing lid means with the opening.

In the food vacuum storage pack and the food vacuum storage method according to the present invention, an opening / closing lid means for closing and opening the opening formed in the pack body is provided to maintain the vacuum state in the pack body at atmospheric pressure. Thus, the opening / closing lid means can be brought into close contact with the opening, so that the closed state of the opening can be easily maintained.

In cooking, if the pack main body is heated, the opening / closing lid means can be automatically opened and the opening can be easily opened due to the rise of the vapor pressure inside.

In the case of a pack body containing food that does not require heating, if the atmospheric pressure can be introduced into the inside by cutting a part of the pack body, the opening / closing lid means can be easily opened. .

In particular, in the first aspect of the invention, after the food is stored, the opening / closing lid means is brought into contact with the opening after heating, and the internal vapor pressure is reduced by the atmospheric pressure as the inside of the pack body is cooled down. Since the inside of the pack body can be vacuum-stored by closely attaching it to the opening, it can be vacuum-stored after heat sterilizing the food.

In the second aspect of the invention, the inside of the pack body can be vacuum-stored by sucking air from the pack body in the state where the food is stored and bringing the opening / closing lid means into close contact with the opening of the pack body by atmospheric pressure. Since it is in a state, it is possible to save food that does not require heating for storage, and it is possible to easily open the opening and closing lid means by cutting a part of the pack body or by heating when cooking. is there.

Further, in the third aspect of the invention, a heating step of storing food in the pack body and heating it, and an opening closing for maintaining a state in which the opening and closing lid means is brought into contact with the opening of the pack body to close the opening. The heating step includes a state holding step and a vacuum storage step in which the inside of the pack body can be stored in a vacuum state by bringing the opening / closing lid means into close contact with the opening due to atmospheric pressure as the inside of the pack body is cooled. No special device is required other than the heating means in 1., and the food can be heat-sterilized or cooked by a simple operation and then vacuum-stored.

[0021]

1 to 5 show a food vacuum storage pack 1 and a food vacuum storage method (third invention) according to a first embodiment of the present invention (first invention). I will explain it. 1 is a sectional view of a food vacuum storage pack 1 before vacuum storage, and FIG. 2 is a perspective view of the same. The food vacuum storage pack 1 includes a pack body 2, an opening / closing lid means 3, and With.

The pack body 2 is made of a heat-resistant material having a predetermined rigidity, specifically, a vinyl-based or other synthetic resin material, for example, a temperature of 120 ° C.
Is a container having excellent heat resistance and cold resistance, which is resistant to the temperature range from 0 to 40 ° C. below zero, and is adapted to house the food F from the opening 4 therein. Open hole 4
Has a shape in which the hole peripheral portion 4A is opened outward. As the food F, not only fish, meat, vegetables, fruits, grains, and cooked products thereof, but also bread dough, soup, and any other food or drink can be selected.

The opening / closing lid means 3 has an opening peripheral portion 4A of the opening 4.
This is closed at the inclined peripheral edge portion 3A of the lid which is in close contact with, and the close contact state is released to open the opening 4. The opening / closing lid means 3 has a part (pivotally attached portion 3B) integrally formed with the pack main body 2 and is pivotally attached to the pack main body 2 to enable the opening / closing. Also, at the tip of the lid peripheral portion 3A,
The knob portion 3C (phantom line in FIG. 2) may be formed for convenience of operation.

The process of vacuum-storing the food F with the food vacuum-storing pack 1 having such a configuration will be described with reference to FIGS. 3 to 5. FIG. 3 is a cross-sectional view showing a state in which the food F is stored in the food vacuum storage pack 1, and the food vacuum storage pack 1 is heated by heating the heating means H having a microwave oven, a water bath, a steamer or any other structure. And
The food F is cooked or sterilized by the heating by the heating means H, and the steam inside the pack body 2 is discharged to the outside from the openings 4 (heating step).

FIG. 4 shows a state where the opening 4 is closed by pressing the lid peripheral portion 3A of the opening / closing lid means 3 of the food vacuum storage pack 1 taken out from the heating means H to the opening peripheral portion 4A of the opening 4. FIG. 3 is a sectional view showing the opening / closing lid means 3 (the lid peripheral portion) by maintaining the closed state of the opening 4 (opening closed state holding step), and reducing the vapor pressure accompanying cooling of the inside of the pack body 2 by atmospheric pressure. 3A) is brought into close contact with the opening 4 (opening peripheral edge portion 4A), and the inside of the pack body 2 is vacuum-stored (vacuum storage step).

As described above, by making the inside of the pack body 2 in a vacuum state, the food F lasts longer, and it becomes easy to put the food F in the food vacuum storage pack 1 for heat sterilization, and to keep the vacuum. You can create a state. Moreover, no adhesive or an adhesive operation is required to close and close the opening 4.

FIG. 5 is a cross-sectional view showing a state in which the food vacuum storage pack 1 is heated and cooked by a microwave oven or other heating cooking container E when the food F vacuum-stored by the food vacuum storage pack 1 is tasted. Then, the vapor pressure inside the pack body 2 rises due to the heating from the cooking utensil E, and the opening / closing lid means 3 pivots about the pivot portion 3B to open the opening 4, and the pack body 2 bursts. There is nothing to do.

Thus, the opening 4 can be easily and automatically opened only by heating, and after the food F is cooked, the food F can be taken out from the opening 4 and enjoyed.

In the present invention, the structure of the opening / closing lid means may be arbitrary. For example, FIG. 6 is a cross-sectional view of essential parts of a food vacuum storage pack 10 according to a second embodiment of the present invention (first invention). An opening 4 is formed in the upper surface portion 2A, and an opening / closing lid means 11 capable of opening / closing the opening 4 is pivotally attached to the pack body 2 at a pivot attachment portion 11A.

The opening peripheral portion 4B of the opening 4 is inclined inward, and the opening / closing lid means 11 is formed in a convex shape toward the opening 4 so as to be easily attached.

A vacuum food storage pack 10 having such a configuration.
In the same manner as in the food vacuum storage pack 1 (FIG. 1), the food F can be stored and heated, and the opening / closing lid means 11 can be closed and held for vacuum storage. Since the opening / closing lid means 11 is formed in a part of the pack body 2, the holding of the opening / closing lid means 11 after heating is easy and reliable.

FIG. 7 is a sectional view of the essential parts of a food vacuum storage pack 12 according to the third embodiment of the present invention (first invention). In the food vacuum storage pack 12, the pack main body 2 is used. An opening 4 is formed in the upper surface portion 2A of the above, and a ball valve 13 (opening / closing lid means) capable of opening and closing the opening 4 is surrounded by a holding frame 14.

The holding frame 14 has a vapor pressure relief hole 1
5 is formed to enable communication between the inside of the pack body 2 and the atmosphere.

A vacuum food storage pack 12 having such a structure
In the case where the food vacuum storage pack 12 is heated, the steam inside the pack body 2 escapes to the outside through the opening 4 and the vapor pressure relief hole 15 while the ball valve 13 is floating from the opening 4. By pressing the ball valve 13 against the opening 4, the ball valve 13 can be stored in a vacuum state.

In this food vacuum storage pack 12, since the opening / closing lid means is the ball valve 13, the opening 4
The sealing action of is sure.

FIG. 8 is a sectional view of the essential parts of a food vacuum storage pack 16 according to the fourth embodiment of the present invention (first invention). In the food vacuum storage pack 16, the pack main body 2 is used. An opening 4 is formed in the upper surface portion 2A of the above, and the annular groove portion 17A of the opening / closing lid means 17 capable of opening and closing the opening 4 can be brought into contact with and separated from the projecting peripheral edge portion 4C of the opening 4.

A vacuum food storage pack 16 having such a structure
In, when the food vacuum storage pack 16 is heated, the vapor in the pack main body 2 has a protruding peripheral edge portion 4C of the opening 4.
The open hole 4 can be held in a closed state only by escaping to the outside through the gap between the open / close lid means 17 and the annular groove portion 17A and pressing the open / close lid means 17 in the direction of the open hole 4.

In the present invention (second invention), a vacuum suction operation may be performed in addition to the heating operation in the first invention, as a method of evacuating the inside of the pack body 2. That is, FIG. 9 shows a food vacuum storage pack 1 according to a fifth embodiment of the present invention (second invention).
8 is a cross-sectional view of the food vacuum storage pack 18, in which the opening / closing lid means 3 and the opening 4 similar to those of the food vacuum storage pack 1 of FIG. A vacuum suction hole 19 is formed in.

The vacuum suction hole 19 is evacuated by the vacuum pump 20 so that the inside of the pack body 2 is evacuated and the vacuum suction hole 19 is closed. Thus, the opening / closing lid means 3 is brought into close contact with the opening 4 by the atmospheric pressure, and the vacuum storage can be performed.

Vacuum food storage pack 18 having such a structure
When heated, as described above with reference to FIG. 5, the opening / closing lid means 3 automatically rotates with the pivot portion 3B as a fulcrum as the vapor pressure inside the pack body 2 increases, and the opening 4 is opened. Open.

FIG. 10 is a sectional view showing another method for making the inside of the food vacuum storage pack 1 of FIG. 1 a vacuum, for example, and showing the food vacuum storage pack 1 with the opening / closing lid means 3 open. The inside of the vacuum suction container 21 is housed, and the inside of the vacuum suction container 21 and the inside of the pack main body 2 are evacuated by vacuuming from the vacuum suction hole 22 by the vacuum pump 20. Furthermore, if the opening / closing lid means 3 is taken out from the vacuum suction container 21 in a state in which it is in close contact with the opening 4, the food F can be vacuum-stored while the inside of the pack body 2 remains vacuum.

FIG. 11 shows a food vacuum storage pack 2 according to a sixth embodiment of the present invention (first invention, second invention).
3 is a cross-sectional view of the food vacuum storage pack 23 in which the opening / closing lid means 3 and the opening 4 similar to those of the food vacuum storage pack 1 of FIG. A vacuum releasing cutting portion 24 is formed in a protruding manner, and a cutting mark 25 is formed on the vacuum releasing cutting portion 24.

Furthermore, by the method of vacuum storage by heating described with reference to FIGS. 3 to 5 or the method of vacuum storage by evacuation described with reference to FIG.
A vacuum is applied to the inside of the pack body 2 to store the food F in a vacuum.

A vacuum food storage pack 23 having such a structure
At the time of the taste, the pack body 2 is communicated with the atmosphere by cutting the cutting mark 25, and the opening / closing lid means 3 is rotated about the pivot portion 3B as a fulcrum to open the opening 4. Therefore, the food F can be taken out without heating.

FIG. 12 is a sectional view of a food vacuum storage pack 26 according to a seventh embodiment of the present invention (first invention). In the food vacuum storage pack 26, for example, the food of FIG. Pack body 2 similar to the vacuum storage pack 1
The opening / closing lid means 27 and the opening 4 are formed in the container, and the food F is stored therein.

The opening / closing lid means 27 is constructed integrally with the pack body 2 by a flat pipe or the like made of a flexible synthetic resin material capable of communicating the opening 4 with the atmosphere. The length of the opening / closing lid means 27 is set to a length required to maintain the closed state of the opening 4 after heating and to maintain the vacuum in the pack body 2.

As described with reference to FIGS. 3 to 5, the entire food vacuum storage pack 26 is heated together with the food F, and steam is discharged from the opening 4 and the opening / closing lid means 27 (open state of virtual line in the figure). Is evacuated, and after the heating step is completed, it is closed by sandwiching the opening / closing lid means 27, and after cooling, the inside of the pack main body 2 is maintained in a vacuum state so that vacuum storage is possible.

Vacuum food storage pack 26 having such a structure
Also, the food F can be vacuum-stored by a simple configuration and method.

FIG. 13 is a sectional view of a food vacuum storage pack 28 according to an eighth embodiment of the present invention (first invention). The food vacuum storage pack 28 includes a pack body 29.
And an opening / closing lid means 30.

Like the pack body 2, the pack body 29 is made of a vinyl-based or other synthetic resin material and has resistance to a temperature range of, for example, 120 ° C. to 40 ° C. below zero, and has heat resistance and cold resistance. Excellent storage container.
The inside of the pack body 2 can be hermetically sealed by forming a heat seal portion 31 on the outer edge portion.

The opening / closing lid means 30 includes a cutting line 32 for forming an opening.
By cutting (cutting) a part of the opening / closing lid means 30 at a portion, an opening 33 capable of communicating the inside and the outside of the pack body 29 can be formed.

That is, the opening / closing lid means 30 includes the heat seal portion 3.
Opening area seal part 31 located in the vicinity of opening 4 in part 1
A and an internal seal portion 31 extending inward of the pack body 29
This is constituted by B and the pack main body 29 on the front and back of the opening 33.

The width of the opening 33 is appropriately selected depending on the capacity of the pack body 29, the type of the food F to be stored, and the like.

Vacuum food storage pack 28 having such a structure
In the state where the opening 33 is formed by cutting the opening / closing lid means 30 at the portion of the opening forming cutting line 32, in the same manner as described with reference to FIGS. The whole is heated with the food F,
After the steam is exhausted from the opening 33 and the heating step is completed, the opening / closing lid means 30 is sandwiched to close it, and the inside of the pack main body 2 is kept in a vacuum state, so that vacuum preservation is possible. The closed opening 33 is indicated by a dot in FIG.

Vacuum food storage pack 28 having such a structure
Also, the food F can be vacuum-stored by a simple configuration and method, and the flat-plate-shaped pack body 2 can be used.
Even 9 is applicable to vacuum storage.

Next, the food vacuum preservation pack according to the present invention can be combined with a food preparation pack having another structure to perform various heat cooking in addition to vacuum preservation of food. That is, FIG. 14 shows the first embodiment of the present invention.
15 is a plan view of the food cooking pack 40 according to the application example of FIG.
FIG. 4 is a sectional view of the same, showing the food cooking pack 40.
Has a pack body 41, an aperture forming means 42, and, for example, the food vacuum storage pack 1 of FIG. Of course, other than the food vacuum storage pack 1 of FIG. 1, a food vacuum storage pack according to any embodiment can be adopted.

Like the pack body 2, the pack body 41 is made of a vinyl-based or other synthetic resin material and has resistance to a temperature range of, for example, 120 ° C. to 40 ° C. below zero, and has heat resistance and cold resistance. It is an excellent container,
A pre-cooked food Y that can be enjoyed by heating is stored inside. The inside of the pack body 2 is hermetically sealed by forming a heat seal portion 43 on the outer edge portion.

As the pre-cooked food Y, similar to the food F, fish, meat, vegetables, fruits, cereals, cooked products thereof, bread dough, soup and other foods and drinks can be selected.

The opening forming means 42 is a fixed frame 4 provided so as to traverse so as to cover the upper and lower surfaces of the central portion of the pack body 41.
4 and a needle 45 provided inside the fixed frame 44 so as to be opposed to the surface of the pack body 41.

The fixed frame 44 has a rectangular cross section that matches the shape of the pack body 41, has a predetermined width, and is not easily deformed by heat, and may be made of, for example, a hard synthetic resin material. desirable.

Further, the needle 45 may be formed integrally with the fixed frame 44, or a separate needle 45 may be adhered to the inner side of the fixed frame 44, which is in a normal non-heated state. Does not contact the surface of the pack body 41.

As shown in FIG. 15, the back surface side of the pack main body 41 and the inner side surface of the fixed frame 44 are adhered to each other by an adhesive portion 46 to integrate the pack main body 41 and the fixed frame 44.

The food vacuum storage pack 1 is the food vacuum storage pack according to any one of the embodiments of the present invention described above, and stores the soup S for cooking the pre-cooked food Y as the food F. is there.

The food cooking pack 40 having such a structure is
As shown in FIG. 16, when the food is stored in a heating and cooking container E and heated, the soup S in the food vacuum storage pack 1 is first heated and vaporized to increase the vapor pressure inside the food vacuum storage pack 1. The opening / closing lid means 3 is opened and the soup S flows out into the pack body 41 from the opening 4. Therefore, the cooked pre-cooked food Y is cooked with the heated soup S.

As the vapor pressure in the pack body 41 rises, as shown in FIG. 17, the hole forming means 42 is actuated to bring the needle 45 into contact with the pack body 41 to form an opening 47 in the pack body 41. After being formed, the pack main body 41 keeps a predetermined internal pressure without exploding and continues cooking. That is, when the pack body 41 expands due to heating and comes into contact with the needle 45 of the opening forming means 42, the opening 47 is formed, and the vapor pressure can escape to the outside from the opening 47.

The pack body 41 can be cut open, and the food thus cooked can be taken out and enjoyed. In addition, conventional foods that have been boiled in advance with soup and vacuum packed have a problem that the taste deteriorates with storage,
Since it can be enjoyed after cooking using the food cooking pack 40 to which the food vacuum storage pack according to the present invention is applied, the taste is fresh.

Since the food cooking pack 40 has the fixing frame 44 made of a material which is not deformed by heat, it is easy to set the timing of contact with the needle 45 due to the expansion of the pack body 41, and further the pack body 41. It also has a protection function.

FIG. 18 is a cross-sectional view of a food cooking pack 50 according to a second application example of the present invention. This food cooking pack 50 has the food cooking pack 50 inside the pack body 41. The pre-cooked food Y and the food vacuum storage pack 1 are stored, and an opening forming protrusion 51 is formed in a part thereof.

That is, the heat-sealing portion 43 is positioned around the opening forming projection 51, and a part of the opening forming projection 51 is cut (cut) at the opening forming cutting line 52. By doing so, it is possible to form the communication opening 53 that can communicate the inside and the outside of the pack body 41. A part of the heat seal portion 43 is cut off in a triangular shape at the cutting line 52 for forming an opening, and a mark 54 for forming an opening is provided.

Regarding the width of the communication opening 53, the pack body 4
This is appropriately selected depending on the capacity of 1, the type of precooked food Y to be stored, and the like.

In the food cooking pack 50 having such a structure, as shown in FIG. 19, the communication opening 53 is formed by cutting the opening forming projection 51 at the opening forming mark 54. , Food Cooking Pack 50
Is stored in a heating cooking container E, and heating is started.

With heating, first, the soup S in the food vacuum storage pack 1 is heated and evaporated to increase the vapor pressure inside, and the opening / closing lid means 3 of the food vacuum storage pack 1 is opened to open from the opening 4. The soup S flows out into the pack body 41. Therefore, the cooked pre-cooked food Y is cooked with the heated soup S.

As shown in FIG. 20, by this heat treatment, the pre-cooked food Y in the pack body 41 is heated, and steam is generated as the air inside is expanded by heating.
The pack main body 41 expands as the internal pressure rises, and the communication opening 5 for releasing steam pressure in the opening forming projection 51 is formed.
Release pressure from 3 to the outside.

Therefore, the food cooking pack 40 (see FIG.
The precooked food Y can be cooked in the same manner as 4).

The food cooking pack 50 in which the communication openings 53 are formed by cutting off the opening forming protrusions 51 is heated at a temperature of 120 ° C. or higher by a microwave oven, a hot water bath, a steamer or another heating cooking container. By performing sterilization and closing the communication opening 53 by an arbitrary means when the temperature is still about 90 to 120 ° C. (that is, by using the opening forming protrusion 51 as the opening / closing lid means). As with the food vacuum storage packs of the various embodiments of the present invention, the food vacuum storage pack 1 and subsequent ones are in a vacuum state with a decrease in temperature, and the retort food remains in a state where cooking is completed. Can be stored for a long period of time.

[0076]

As described above, according to the present invention, the food vacuum preserving pack is hermetically sealed by heating or vacuuming to reduce the vapor pressure inside the pack main body and adhesion due to atmospheric pressure to prevent the atmospheric pressure by heating or cutting. Since it can be opened upon introduction, not only heat sterilization of food but also vacuum storage is facilitated, and the opening is automatically and easily opened for cooking, which facilitates cooking operation.

[0077]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a food vacuum storage pack 1 according to a first embodiment of the present invention (first invention) before vacuum storage.

FIG. 2 is a perspective view of the same.

FIG. 3 shows a state in which the food vacuum storage pack 1 is accommodated and heated in a state where the food F is stored in the food vacuum storage pack 1 in a heating means H having a microwave oven, a hot water bath, a steamer or any other structure. FIG.

FIG. 4 shows a state in which the opening peripheral portion 3A of the food vacuum storage pack 1 taken out from the heating means H is pressed against the peripheral edge portion 4A of the opening 4 to close the opening 4. FIG.

FIG. 5 is a cross-sectional view showing a state in which the food vacuum storage pack 1 is heated and cooked in a microwave oven or other heating cooking container E when the food F vacuum-stored in the food vacuum storage pack 1 is tasted.

FIG. 6 is a sectional view of essential parts of a food vacuum storage pack 10 according to a second embodiment of the present invention (first invention).

FIG. 7 is a cross-sectional view of essential parts of a food vacuum storage pack 12 according to a third embodiment of the present invention (first invention).

FIG. 8 is a cross-sectional view of essential parts of a food vacuum storage pack 16 according to a fourth embodiment of the present invention (first invention).

FIG. 9 is a cross-sectional view of a food vacuum storage pack 18 according to a fifth embodiment of the present invention (second invention).

FIG. 10 is a cross-sectional view showing another method of applying a vacuum to the inside of the food vacuum storage pack 1 of FIG. 1, for example.

FIG. 11 is a cross-sectional view of a food vacuum storage pack 23 according to a sixth embodiment of the present invention (first invention, second invention).

FIG. 12 is a sectional view of a food vacuum storage pack 26 according to a seventh embodiment of the present invention (first invention).

FIG. 13 is a sectional view of a food vacuum storage pack 28 according to an eighth embodiment of the present invention (first invention).

FIG. 14 is a plan view of a food cooking pack 40 according to a first application example of the present invention.

FIG. 15 is a sectional view of the same.

FIG. 16 is a cross-sectional view for explaining a state where the food cooking pack 40 is housed in a heating and cooking container E such as a microwave oven for heating and cooking.

FIG. 17 is a cross-sectional view illustrating a state where the food cooking pack 40 is housed in the heating cooking container E such as a microwave oven and cooked (the expanded state of the pack body 41).

FIG. 18 is a sectional view of a food cooking pack 50 according to a second application example of the present invention.

FIG. 19 is a sectional view of the food cooking pack 50 in a state of being housed in a heating and cooking container E with a communication opening 53 formed therein.

FIG. 20 is a pack 50 for cooking food in the heating process.
FIG. 4 is a cross-sectional view illustrating an expanded state of the pack body 41 of FIG.

[Explanation of symbols]

1 food vacuum storage pack (first invention, first embodiment, FIG. 1) 2 pack body 2A top surface of pack body 2 (FIG. 6) bottom surface of 2B pack body 2 (FIGS. 9 and 11) 3 Opening / Closing Means 3A Peripheral Edge of Opening / Closing Means 3 3B Pivoting Section of Opening / Closing Means 3C Knob of Opening / Closing Means 3 Opening 4A Opening Peripheries of Opening 4 (FIG. 1) 4B Opening 4 Opening edge peripheral part (FIGS. 6 and 7) 4C Projecting peripheral edge part of opening 4 (FIG. 8) 10 Food vacuum storage pack (first invention, second embodiment, FIG. 6) 11 Opening / closing lid means 11A Opening / closing lid means 11 is pivotally attached 12 Food vacuum storage pack (first invention, third embodiment, FIG. 7) 13 Ball valve (opening / closing lid means) 14 Holding frame 15 Vapor pressure relief hole 16 Food vacuum Storage pack (first invention, fourth embodiment, FIG. 8) 17 Opening / closing lid hand 17A Annular groove part of the opening / closing lid means 17 (Fig. 8) 18 Food vacuum storage pack (second invention, fifth embodiment, Fig. 9) 19 Vacuum suction hole 20 Vacuum pump 21 Vacuum suction container (Fig. 10) 22 Vacuum suction hole 23 Food vacuum storage pack (first invention, second invention, sixth embodiment, FIG. 11) 24 Vacuum releasing cutting section 25 Cutting mark 26 Food vacuum storage pack (first Invention, 7th Embodiment, FIG. 12) 27 Opening / closing lid means 28 Food vacuum preservation pack (1st invention, 8th embodiment, FIG. 13) 29 Pack body 30 Opening / closing lid means 31 Heat seal part 31A Heat seal portion 31 near open hole seal portion 31B Heat seal portion 31 inner seal portion 32 Open hole forming cutting line 33 Open hole 40 Food cooking pack (first application example, FIG. 14) 41 Pack body 42 Open hole Forming hands 43 Heat Seal Part 44 Fixed Frame with Rectangular Section 45 Needle 46 Adhesive Part 47 Opening Hole 50 Food Cooking Pack (Second Application Example, FIG. 18) 51 Opening Forming Protruding Part (Opening / Closing Means) 52 Opening Forming Cutting line 53 Communication open hole 54 Opening hole forming mark E Cooking device (microwave oven) F Food H Microwave oven, hot water, steamer and other heating means of any structure S Soup Y Pre-cooked food

Claims (6)

[Claims] 1. A food vacuum storage pack for storing food in a vacuum, the pack body containing the food and made of a heat-resistant material having a predetermined rigidity, and a part of the pack body. The opening / closing lid means closes the formed opening to close the opening and releases the close contact to open the opening. The opening / closing lid means heats the food in a state where the food is stored. After that, the inside of the pack main body is brought into a state in which the inside of the pack main body can be vacuum-stored by contacting the opening and bringing the inside of the pack main body into close contact with the opening due to atmospheric pressure as the inside of the pack main body is cooled. Food vacuum storage pack. 2. A food vacuum storage pack for storing food in a vacuum, the pack body containing the food and made of a heat-resistant material having a predetermined rigidity, and a part of the pack body. The opening and closing cover means closes the opening formed and closes the opening and opens the opening by releasing the close contact, and the opening and closing cover means stores the food in the state described above. A food vacuum storage pack characterized in that the inside of the pack body can be vacuum-stored by sucking air from the pack body and bringing the air into close contact with the opening of the pack body by atmospheric pressure. 3. The food vacuum storage pack according to claim 1 or 2, wherein the opening / closing lid means is pivotally attached to a part of the pack body. 4. The food vacuum storage pack according to claim 1 or 2, wherein the opening / closing lid means is capable of contacting with and separating from the opening. 5. The food vacuum storage pack according to claim 1, wherein the opening / closing lid means is integrally formed with the pack body. 6. A vacuum food preservation method for vacuum preserving food, comprising storing the food in a pack body made of a heat-resistant material having a predetermined rigidity and having an opening formed in a part thereof. A heating step of heating by means of heating, and a step of holding the opening closed state of holding the opening and closing lid means in contact with the opening to close the opening after finishing the heating step; A vacuum storage method for foods, which comprises a vacuum storage step in which the inside of the pack body can be vacuum-stored by bringing the opening / closing lid means into close contact with the opening due to atmospheric pressure upon cooling.