JP2003040283A - Food storing bag and heating and cooking method using this bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food storing bag which can be easily manufactured, has a superior economic characteristic and can perform a heating operation for food suitably stored in the bag even if any of a hot-water boiling or a microwave oven is used. SOLUTION: There is provided a food storing bag 10 in which a requisite portion of a plastic film is heat melted and formed into a bag having an air- tightness and a food to be heated is stored inside the bag. This bag has an inner sealing segment 16 for dividing the inside part of the bag into a plurality of areas having an air-tightness. Foods 100 are stored in one of the plurality of areas. The inner sealing segment 16 is formed to have a low adhering segment 16b to be opened by water vapor pressure generated when the foods 100 are heated, and a high adhering segment 16a not opened by the water vapor pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage bag in which food to be heat-treated is stored, and more specifically, heating of properly stored food whether using a hot water bath or a microwave oven. The present invention relates to a food storage bag that can be processed, and a heating and cooking method using the same.

[0002]

2. Description of the Related Art Frozen foods and chilled foods are usually sold in a plastic film containing bag. Such frozen foods are usually stored in an electronic form with the foods taken out of the storage bag and placed on a plate, or if necessary, with the frozen foods placed on the plate covered with wrap. It is designed to be heated in the microwave.

However, recently, a storage bag has been developed which can be directly heated in a microwave oven while storing frozen food or the like. This accommodation bag is configured such that a part of the seal portion is easily opened, and when the food is heated by the microwave oven and the water vapor pressure in the accommodation bag rises, the water vapor pressure causes the accommodation bag to be contained. A part of the container is opened and the water vapor inside is discharged.

As a concrete structure of such a bag, for example, a part of the bottom seal part to be heat-welded or a part of the seal part provided on the back surface is adhered with tape or heated. There is known a structure in which an easily peelable film is used for adhesion, and an adhesion portion that is weaker than a seal portion formed by mature welding is provided. With such a configuration, when the sealed storage bag containing the frozen food is heated in the microwave oven, the adhesive force is weakened by the adhesive tape, the special pearl film, etc. due to the water vapor pressure in the storage bag. The part is opened, and water vapor is discharged from the part. As a result, there is no risk of the entire storage bag being ruptured, and the food inside can be easily taken out by utilizing the opened portion.

[0005]

However, in such a storage bag, since the adhesive strength of a part of the seal portion is reduced by using an adhesive tape or a special film, it is heat-sealed at the time of manufacturing. Thus, there is a problem that an adhesive tape or a special film must be interposed between the stacked plastic films, so that it cannot be easily manufactured. In addition to the plastic film used for manufacturing the storage bag, an adhesive tape or a special film must be used, which causes a problem of high manufacturing cost.

[0006] Further, in the outdoors or the like where there is no equipment such as a microwave oven, the food in the accommodation bag according to the above-mentioned conventional technique may be heated by boiling water. However, when the above-mentioned storage bag is put in hot water, there is a problem that the hot water enters the storage bag through a gap such as an adhesive tape and the food in the storage bag cannot be properly heat-treated.

Therefore, the present invention has been made in order to solve the above-mentioned problems of the prior art, and can be manufactured easily and is excellent in economical efficiency, and in the case of using either a hot water bath or a microwave oven. Even if it is, it is an object to provide a food storage bag that can perform heat treatment on food that is properly stored. Another object is to provide a heating cooking method using this food storage bag.

[0008]

A food storage bag according to the present invention for solving the above problems is formed by forming a bag having airtightness by heat-welding a necessary portion of a plastic film and heat-treating the inside. A bag for accommodating foods, comprising a bag-encapsulating part that divides the inside of the bag into a plurality of regions each having airtightness, and the foods can be contained in at least one region of the plurality of regions. It is characterized in that the inside-bag sealing portion has a low-adhesion portion which is opened by the water vapor pressure when the food is heated and a high-adhesion portion which is not opened by the water vapor pressure.

Further, in the food storage bag according to the present invention, the bag inner sealing portion is formed by heat welding in a state where the front surface portion and the back surface portion of the food storage bag are overlapped with each other,
It is preferable that the low adhesion portion is heat-welded at a low temperature to weaken the adhesiveness, and the high adhesion portion is heat-welded at a high temperature to enhance the adhesiveness.

Further, in the food bag according to the present invention, it is preferable that the low temperature is about 90 to 120 ° C and the high temperature is about 140 to 180 ° C.

Further, in the present invention, when the food is cooked using the food bag having any of the above-mentioned constitutions, when the food is heated by hot water, the food bag is left as it is. It is possible to perform heat treatment by putting it in hot water, and when heating the food in a microwave oven, the area adjacent to the area in which the food is accommodated via the bag sealing part. After the opening is formed in the container, the food storage bag in which the opening is formed can be put into the microwave oven to perform the heat treatment. Therefore, according to the present invention, one food storage bag can be used both as a hot water bath and a microwave oven, and a heat treatment can be realized as necessary.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> FIG. 1 is a schematic perspective view showing a food storage bag according to a first embodiment of the present invention.
In FIG. 1, a frozen food 100 such as frozen rotary bake is stored inside a food storage bag 10. The storage bag 10 is made of a rectangular nylon-polyethylene film, and has a front portion 11 formed by the central portion of the nylon film and side portions of the nylon-polyethylene film facing the front portion 11. And a configured back surface portion 12. At the center of the back surface portion 12, there is provided a linear central seal portion 13 in which the respective side edge portions are overlapped with each other and heat-welded.

Further, one edge portion of the front surface portion 11 of the storage bag 10 and the edge portion of the back surface portion 12 facing the edge portion are overlapped with each other, and the temperature is, for example, about 140 to 180 ° C. The bottom seal portion 14 in a highly bonded state is formed by being heat-welded at a high temperature and bonded by a strong adhesive force.

Further, the end opposite to the bottom seal portion 14 is heat-welded at a high temperature of, for example, 140 to 180 ° C. after the frozen food 100 such as frozen roasted food is accommodated and has a strong adhesive force. The opening seal portion 15 is airtightly adhered in a highly adhered state.

Further, in the present embodiment, the bag-in-sealing portion 16 is formed between the frozen food 100 and the opening sealing portion 15. The in-bag sealing portion 16 is formed by heat welding the front surface portion 11 and the back surface portion 12. In particular,
For example, the high adhesion portion 16a which is heat-welded at a high temperature of about 140 to 180 ° C. and is adhered with a strong adhesion force is adhered with a weaker adhesion force than the high adhesion portion 16a (the heat is applied to form the high adhesion portion 16a. 60 ° C higher than the temperature when welding
The low adhesion portion 16b is heat-welded at a low temperature of about 90 to 120 ° C.). The high-adhesion portions 16a and the low-adhesion portions 1 that form the inside-bag sealing portion 16
Since 6b is in an airtight state, it is formed by the region formed by the bottom sealing portion 14 and the bag sealing portion 16 in the accommodation bag 10, and by the bag sealing portion 16 and the opening sealing portion 15. All the areas are airtight. That is, the accommodation bag 10 according to the present embodiment is in an airtight state as a whole.

Such a bag-in-sealing portion 16 has a front portion 11
A tape is attached to a portion corresponding to the low adhesion portion 16b in the hot plate used for heat-sealing the rear surface 12 and the rear portion 12 (that is, heating by the hot plate is suppressed by the attached tape or the like). The front part 11 and the back part 12 made of nylon-polyethylene film.
Are heat-welded. As a result, in the bag-in-sealing portion 16, a portion where heating is suppressed by a tape or the like is formed as a low adhesive portion 16b having a weak adhesive force, and other portions (both sides of the low adhesive portion 16b) are attached. It is formed as a high-adhesion portion 16a having a strong force.

Next, a specific heat treatment method for heating the frozen food contained in the food containing bag 10 having the above-mentioned structure and containing the frozen food will be described.

FIG. 2 is a schematic view showing a case where the accommodation bag 10 containing the frozen food 100 shown in FIG. 1 is heat-treated with hot water. As shown in FIG. 2, when performing hot water boiling, hot water 22 having a predetermined temperature is stored in a container 21,
The storage bag 10 (the storage bag 10 containing the frozen food 100) shown in FIG. 1 is poured into the hot water 22 as it is.

As described above, the storage bag 10 according to this embodiment has the bottom seal portion 14, the opening seal portion 15, and the middle bag sealing portion 1 in the state where the frozen food 100 is stored.
Since the entire bag is airtight using 6 as shown in FIG. 2, even if the bag is directly put into the hot water 22 as shown in FIG. It does not infiltrate. Therefore, according to the present embodiment, the frozen food 100 in the storage bag 10 can be subjected to an appropriate heat treatment by boiling. According to the accommodation bag 10 according to the present embodiment, even if the low-adhesion portion 16b of the inside-bag sealing portion 16 is unsealed due to a pressure increase in the accommodation bag 10, the opening sealing portion 15 can appropriately perform the opening. Since the airtight state is maintained, the hot water 22 does not enter the accommodation bag 10.

Next, FIG. 3 is a schematic view showing a case where the storage bag 10 containing the frozen food 100 shown in FIG. 1 is heat-treated in a microwave oven, and FIG. FIG. 3B is a schematic view for explaining pretreatment (to be described later) for the bag 10, and FIG. 3B is a schematic diagram in which the accommodation bag 10 after the pretreatment is put into a microwave oven.

When the frozen food in the accommodation bag 10 according to the present embodiment is heated by using the microwave oven, first, the region between the opening seal portion 15 and the in-bag sealing portion 16 in the accommodation bag 10 is first. (Food product 10 through the bag inner sealing portion 16
An area adjacent to the area where 0 is stored)
Cut with scissors. For example, the opening seal portion 15 side is cut off along the broken line XX shown in FIG.
Hereinafter, the process of providing an opening in a region adjacent to the region in which the food 100 is accommodated through the in-bag sealing portion 16 by cutting in this manner is referred to as “pretreatment”.

Then, FIG. 3B shows a state in which the storage bag 10 subjected to the pretreatment described in FIG. 3A has been put into the microwave oven D. The storage bag 10 that has been subjected to the above-described pretreatment can be directly heated by the microwave oven D in a state where the frozen food 100 such as frozen rotary bake is stored inside.

In the present embodiment, the low-adhesion portion 16b of the in-bag sealing portion 16 is shown in, for example, FIG. 3 (b) so that the low-adhesion portion 16b does not come into contact with the mounting table D1 in the microwave oven D to be blocked. As described above, the accommodation bag 10 is put into the microwave oven D with the low adhesion portion 16b facing upward. When the frozen food 100 is heated by the microwave oven, the frozen food 100 is thawed, and the thawed water is further heated to become steam. Then, by further heating the steam,
The water vapor pressure in the storage bag 10 rises, and the storage bag 10 is in an expanded state.

In this state, when the water vapor in the accommodation bag 10 is further heated and the water vapor pressure rises, the accommodation bag 1
When 0 is inflated, the low-adhesion portion 16b of the in-bag sealing portion 16 is unbonded, and the low-adhesion portion 16b is opened. According to this structure, since the low-adhesion portion 16b is first opened, water vapor is not suddenly discharged to the outside, and a large explosion sound or the like can be reliably prevented.

When the frozen food 100 in the accommodation bag 10 is thawed, further heated, and the predetermined heat treatment is completed, the accommodation bag 10 in the state where the low adhesion portion 16b of the bag middle sealing portion 16 is opened, It is taken out of the microwave with the (frozen) food 20. The accommodating bag 10 has the opened low-adhesion portion 16b.
It was opened greatly by using and heated inside (frozen)
The food 20 will be taken out.

In the storage bag 10 according to the present embodiment, even when the heat treatment by the microwave oven D is performed while the frozen food 100 is stored, the low-adhesion portion 16b is obtained by performing the pretreatment as described above. Can be opened. Therefore, according to the present embodiment, the storage bag 1
Even if the pressure in 0 rises, water vapor can be appropriately discharged from the low-bonding portion 16b, so that the frozen food 100 in the storage bag 10 can be appropriately heat-treated without causing an explosion or the like.

As described above with reference to FIGS. 2 and 3, according to the storage bag 10 according to the present embodiment, the food in the storage bag 10 can be used regardless of whether a hot water bath or a microwave oven is used. A suitable heat treatment can be applied to 100. That is, according to the present embodiment, it is possible to provide a storage bag that can be used as both a hot water bath and a microwave oven.

In addition, if the accommodation bag 10 according to the present embodiment is used, after the heat treatment with hot water, the pretreatment described in FIG. 3 is performed, and subsequently the heat treatment with the microwave oven is performed. Is also possible. That is, a two-step heat treatment can be performed using a hot water bath and a microwave oven.

<Second Embodiment> FIG. 4 is a schematic plan view showing a food container according to a second embodiment of the present invention. Incidentally, also in the food storage bag according to the second embodiment,
Food and the like are stored in the storage bag as in the first embodiment, but the illustration of the food and the like is omitted in FIG.

The accommodating bag 40 shown in FIG. 4 is formed of a rectangular nylon-polyethylene film, and the front portion 4 formed of this nylon film.
1 and a rear surface portion 42 formed and provided so as to face the front surface portion 41.

In the accommodation bag 40 according to this embodiment, one side edge of the front part 41 and the side edge of the back part 42 facing the side edge overlap each other. In addition, the first lateral seal portion 43 in a highly adhered state is formed, which is heat-welded at a high temperature of about 140 to 180 ° C. and adhered with a strong adhesive force. In addition, the front portion 41
The other side end edge of the back side portion 42 and the side end edge portion of the back surface portion 42 facing the other side end edge portion are overlapped with each other, for example, 140 to 18
The second lateral seal portion 44 in a highly adhered state is formed by being heat-welded at a high temperature of about 0 ° C. and adhered by a strong adhesive force.

Further, in this embodiment, the front portion 4
1 and the rear surface portion 4 facing the upper edge portion
2 and the upper edge of the opening 2 are overlapped with each other to form the opening seal portion 4
5 is formed, and the lower end edge portion of the front surface portion 41 and the lower end edge portion of the back surface portion 42 facing the lower end edge portion are overlapped with each other to form the bottom seal portion 47. The opening seal portion 45 and the bottom seal portion 47 are both heat-welded at a high temperature of, for example, about 140 to 180 ° C. and are in a highly adhered state having a strong adhesive force. In addition, in this embodiment, after heat-sealing either one of the opening seal part 45 and the bottom seal part 47, frozen food etc. (illustration omitted) is accommodated in the accommodation bag 40, and then the other Heat seal the seal part.

In the present embodiment, the accommodation bag 4
An in-bag sealing portion 46 is formed between the frozen food or the like and the opening sealing portion 45 in the container 0. This bag middle sealing part 46
Is formed by heat welding the front surface portion 41 and the rear surface portion 42.

Specifically, as in the case of the first embodiment described above, the high adhesion portion 4 is heat-welded at a high temperature of, for example, about 140 to 180 ° C. and adhered with a strong adhesive force.
6a and the high adhesive portion 46a by a weaker adhesive force (heat-welded at a temperature of about 90 to 120 ° C., which is about 60 ° C. lower than the temperature when heat-welding to form the high-adhesive portion 46a). It is configured by using the low adhesion portion 46b. Since the high-adhesion portions 46a and the low-adhesion portions 46b forming the bag-in-sealing portion 46 are in an airtight state, a region formed by the bottom seal portion 47 and the bag-in-sealing portion 46 in the accommodation bag 40. , And the region formed by the bag inner sealing portion 46 and the opening sealing portion 45 are both airtight. That is, the storage bag 40 according to the present embodiment is in an airtight state as a whole, as in the first embodiment. The method for forming the in-bag sealing portion 46 (heat welding method) is the same as the method described in the first embodiment.

As in the first embodiment, the food container bag 40 according to the second embodiment configured as described above has the bag inner sealing portion 46 in the container bag 40. Both the heating by the hot water and the heating by the microwave described in the first embodiment can be supported, and the two-step heating of heating by the microwave after the hot water can be performed. That is, the food storage bag 40 according to the second embodiment has various operational effects obtained in the first embodiment described above, although there are some differences in the shape of the bag and the like.
Since it is possible to obtain the same in the same manner, the frozen food or the like in the storage bag 40 can be subjected to the same heat treatment by the same usage method (heat treatment method).

In the second embodiment, after heat-sealing either one of the opening seal portion 45 and the bottom seal portion 47, the frozen food or the like is stored in the storage bag 40, and then the other one. Although the case of heat-sealing the seal part has been described, the present invention is not limited to this configuration. Therefore, for example, after forming the opening seal part 45 and the in-bag sealing part 46, frozen food or the like may be housed in the housing bag 40 and then the bottom seal part 47 may be heat-welded.

The present invention is not limited to each of the above-mentioned embodiments, and is within the scope of the spirit of the present invention.
Various changes other than those described above can be made. For example, the material and the like of the plastic film forming the accommodation bag is not particularly limited. Further, the low adhesion portion formed by the low temperature during the heat welding,
Adhesive strength of appropriate strength can be obtained by appropriately setting the temperature and the like during heat welding depending on the type of film and the like. Further, the length of the low-adhesion portion and the like are also appropriately set depending on the shape, type and the like of the food contained inside.

Further, in each of the embodiments, the case where the food stored in the food storage bag is simply heated (thawed) has been described, but the present invention is not limited to this configuration. . Therefore, for example, the storage bag according to the present invention may be used to perform sterilization / sterilization of food. When performing such sterilization / sterilization, etc., a temperature of about 50 ° C to 120 ° C is used.
It is preferable to perform the heat treatment for about 0 minute to 1 minute.

In each embodiment, the case where the opening seal side is cut using scissors or the like has been described as the pretreatment, but the pretreatment in the present invention is not limited to such a method. For example, a hole may be bored in a region between the opening seal portions 15 and 45 and the bag inside sealing portions 16 and 46 by using a rod-shaped member having a sharp tip.
That is, the pretreatment in this embodiment is performed by the storage bags 10, 4
Sealing part 16 in the bag that occurs when 0 is put into the microwave oven,
The method and the like are not limited in any way as long as an appropriate opening is formed so that water vapor and the like can be discharged from (the low adhesion portion of 46).

[0041]

As described above, according to the present invention,
By providing the above-mentioned bag-in-sealing portion in the accommodation bag,
It is possible to obtain a food storage bag that can be easily manufactured and is excellent in economic efficiency, and can heat-treat appropriately stored food regardless of whether a hot water bath or a microwave oven is used. . Further, by using the accommodation bag having the inside-bag sealing portion as described above, it becomes possible to realize a simple and efficient heating and cooking method.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a food storage bag according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a case where the food in the food storage bag of FIG. 1 is heat-treated with hot water.

FIG. 3 is a schematic view of a case where the food in the food storage bag of FIG. 1 is heat-treated in a microwave oven, and FIG. 3 (a) is a diagram for explaining pretreatment of the food storage bag. b) is a schematic diagram in which the food storage bag for which pretreatment is completed is put into a microwave oven.

FIG. 4 is a schematic view of a food storage bag according to a second embodiment of the present invention.

[Explanation of symbols]

10,40 ... Accommodation bag 11, 41 ... Front part 12, 42 ... Rear part 13 ... Central seal part 14, 47 ... Bottom seal 15, 45 ... Opening seal part 16, 46 ... Sealing part in the bag 16a, 46a ... Highly adhesive part 16b, 46b ... Low adhesion part

Claims (4)

[Claims] 1. A food storage bag, which is formed into a bag shape having airtightness by heat-welding a required portion of a plastic film, and in which foods to be heat-treated can be stored. A bag inner sealing portion that is divided into a plurality of regions having a property, wherein the food can be stored in at least one region of the plurality of regions, and the bag inner sealing portion is the water vapor pressure when the food is heated. A food storage bag having a low-adhesion portion which is opened by means of a high-adhesion portion which is not opened by the water vapor pressure. 2. The inside-bag sealing portion is formed by heat welding in a state in which a front portion and a back portion of the food storage bag are overlapped with each other, and the low-adhesion portion is low in order to weaken adhesiveness. The food storage bag according to claim 1, which is heat-welded at a temperature, and the high-adhesion portion is heat-welded at a high temperature to enhance adhesiveness. 3. The low temperature is about 90 to 120 ° C., and the high temperature is about 140 to 180 ° C.
The food storage bag described in. 4. A method for heating and cooking a food contained in the food storage bag according to claim 1, wherein the food is heated by hot water boiling. The bag is put into hot water as it is and subjected to heat treatment, and when the food is heated in a microwave oven, in a region adjacent to the region where the food is accommodated via the bag-sealing portion. After the opening is formed, the food containing bag in which the opening is formed is put into the microwave oven to perform heat treatment, which is a heating and cooking method.