JPH11189278A - Food material packaging container adaptable to microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container wherein throwaway of a food material can be eliminated for enabling repetitive use, resources can be saved and an amount of discharged waste can be suppressed. SOLUTION: A single or double fastener mechanism 20 is provided on an upper part of a bag, and a valve mechanism 10 peeling due to internal pressure is provided on both seals close to the fastener mechanism is provided, whereby in first packaging a food material, the upper part of the bag is sealed in a completely sealed state for shipment, packaged contents may not overflow during distribution for insuring safety, and even at the time of eating, the bag is cooked in a microwave oven so that the valve mechanism may peel due to internal pressure to allow the internal pressure to escape for preventing the bag from being broken. Even after the upper part of the bag is cut to open and the contents are taken out, presence of the fastener mechanism allows a new food material to be stored and sealed for cooking in the microwave oven, thereby enabling repetitive reuse.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method of packaging raw foods such as seafood or root vegetables, or pre-processed foods such as retort foods and chilled foods, and using a microwave as it is when the foods are packed. The present invention relates to a packaging container having a standing pouch-type bag shape which can be cooked or heated.

[0002]

2. Description of the Related Art Examples of a packaging container of this kind for a microwave oven include, for example, a packaging bag disclosed in Japanese Patent Application Laid-Open No. 8-22897 filed by the same applicant as the present invention, and a Japanese Patent Application Laid-Open No. Japanese Patent Application Laid-Open No. 9-40030 discloses a conventional example. In these conventional packaging containers, the release agent is applied to a part of the seal portion, and when heating and cooking in a microwave oven, the pressure in the container increases, and the internal pressure increases. The release agent is peeled off to allow the internal vapor to escape.

[0003] The foodstuffs packaged in these packaging containers are cut off from the upper portion of the bag after heating and opened, taken out into an appropriate container, and served for food.

[0004]

As described above, in any of the conventional packaging containers, the upper portion of the bag must be cut off and opened when taking out the food inside after heating and cooking in the microwave oven. Therefore, the packaging container is inevitably discarded in a single use. Discarding the packaging container in a single use as described above has a problem that not only waste of resources but also increase of garbage is caused.

[0005] Therefore, in the conventional packaging container, it should be possible to reuse repeatedly, and even in the method of reusing, it can be preserved while maintaining a certain airtightness, and furthermore, it can be reused. There is a problem that must be solved in order to be able to cook foods stored in a microwave oven as they are.

[0006]

As a specific means for solving the above-mentioned problems, the present invention is a bag-like container which can be installed in an upright state by expanding a bottom portion, and a chuck mechanism is provided on an upper portion of the bag body, It is another object of the present invention to provide a food packaging container compatible with a microwave oven, wherein a valve mechanism for peeling off by an internal pressure is provided at a seal portion on both sides of a position close to the chuck mechanism.

[0007] The bag body extends further upward from the chuck mechanism, and an upper seal portion is provided through a separating line. The chuck mechanism uses a single chuck or a double chuck formed separately as a bag for the bag body. The base sheet portions are integrally attached by sealing them inside, the seal to the bag body of the chuck mechanism is that only the upper part is sealed in at least one base sheet, and the valve mechanism is An additional requirement is that the bag has an expanded delta shape on the inner side and a narrow portion in the outer direction of the bag is formed as a weak seal portion.

In the present invention, a chuck mechanism and a valve mechanism are provided. In the first packaging of foodstuffs, the upper part of the bag is sealed and shipped in a completely sealed state. Also, the packaged contents are safe without overflowing, and by heating and cooking in the microwave when eating, the valve mechanism peels off due to the internal pressure and releases the internal pressure to prevent rupture. Even after opening the upper part and taking out the contents, due to the presence of the chuck mechanism,
New foodstuffs can be stored and sealed, cooked in a microwave oven, and can be reused repeatedly.

In particular, when reused, the valve mechanism is in a detached state, but even when the chuck mechanism is closed, the internal pressure of the bag increases during heating and cooking, and the food serves as a pressure cooker. You can cook deliciously.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in more detail with reference to the illustrated embodiment. The packaging bag or packaging container 1 according to the first embodiment shown in FIGS. It is a so-called standing pouch in which two synthetic resin films or sheets 2 and 3 having a rectangular shape are overlapped, and a bottom portion made of another folded synthetic resin film or sheet is provided on the bottom side. And a pair of base sheets 5 on the upper side.
6 is formed in a bag or a container having a storage portion 7 therein by heat-sealing the four circumferences with a chuck mechanism 20 composed of six. In the first embodiment, what is illustrated as the chuck mechanism 20 is a double chuck mechanism, but the double chuck mechanism is structurally superior in strength to the single chuck mechanism. Will be described simply as the chuck mechanism 20 including the single chuck mechanism.

In this case, the belt-shaped base sheets 5 and 6 constituting the chuck mechanism 20 are heat-sealed to predetermined positions of the corresponding sheets 2 and 3 in advance, and then the bottom seal portion 8 and the side seals are formed. The part 9 is heat-sealed.

Base sheets 5 and 6 for sheets 2 and 3
In the heat sealing, the base sheet 5 for the sheet 2 is attached integrally by heat sealing the opening side and the bottom side of the container avoiding the positions of the locking portions 5a and 5b, and the base sheet 6 for the sheet 3 is As shown in FIG. 3, only the range 6c of the locking portions 6a and 6b closer to the opening than the locking portion 6b is attached by heat sealing.

When the bottom seal portion 8 and the side seal portion 9 are heat-sealed, the bottom seal member 4 is interposed and sealed. However, the bottom seal portion 8 has a curved shape. The sealing is performed in the same manner as in the related art so that the folded bottom members 4 do not adhere to each other, except for the side surface sealing portions 9.

When heat sealing the side sealing portions 9 on both side surfaces, the delta valve mechanisms 10 are formed near the opening of the bag body, that is, near the chuck mechanism 20. In the delta-shaped valve mechanism 10, the inner side of the bag body is widened, and a narrow portion in the outer direction of the bag body is formed as a weak seal portion 11. When the internal pressure of the storage unit 7 increases due to heating during cooking, the weak seal unit 1
1 peels off and communicates with the outside, discharges internal steam and the like to prevent the packaging container 1 from bursting, and the side seal portion 9
It is configured to be more easily peeled.

The valve mechanism 10 is formed simultaneously with the side seal 9 as the weak seal 11, and a material having a weak seal, for example, an olefin-based polymer, is made to correspond to the shape of the weak seal 11. The valve mechanism 1 is formed by printing or applying in advance and heat-sealing at the same time as the side seal portion 9, and having such a weak seal portion 11.
Even if there is 0, the inside of the packaging container 1 can be maintained in a sealed or airtight state.

As another means for forming the weak seal portion 11 in the valve mechanism 10, for example, a halftone dot shape (mesh shape) corresponding to the shape of the valve mechanism 10 and the weak seal portion 11 may be provided in a part of the heat seal member. The weak seal portion 11 can be formed at the same time as the formation of the side seal portion 9 by forming the engraved portion (including the engraved portion) and partially sealing along the halftone dot.

The weak seal portion 11 is formed on the heat seal member by, for example, partially embedding a material having low thermal conductivity corresponding to the shape of the weak seal portion 11 in addition to the halftone dot formation. You can also. If the material has low thermal conductivity, even if the seals are simultaneously formed, the sealing performance is inferior due to the lower temperature, and the weak seal portion 11 that is more easily peeled than the side seal portion 9 can be formed.

In the packaging container 1 thus formed, the upper opening is still open, so that after the appropriate foodstuffs are stored therein, the chuck mechanism 20 is closed to maintain a tentatively sealed state. Subsequently, as shown in FIG. 2, the upper seal portion 12 is completely sealed by sealing with an appropriate heat sealing means.

Although the product is distributed on the market as a product with the upper seal portion 12 sealed and completely sealed, the foodstuffs stored during distribution are sealed because the four circumferences including the valve mechanism 10 are sealed. Since it does not leak or deteriorate, it can be stored for a long time. And for customers who have purchased such packaged food,
It can be cooked in a microwave as it is.

In the case of heating cooking using a microwave oven, since the packaging container 1 is a standing pouch, as shown in FIG. 2, the cooking is performed with the bottom member 4 expanded and the packaging container 1 standing upright. By making it stand up like this,
When the food is heated by heating and the remaining air inside expands and the internal pressure rises, the weak seal portion 11 of the valve mechanism 10 is peeled off and communicates with the outside, and the internal pressure is released from the valve mechanism 10 to the outside. There is no escape and the packaging container 1 does not burst.
In addition, since the foodstuff stored in such a packaging container 1 is 1/2 or less of the capacity of the container, the foodstuff does not blow out from the valve mechanism 10 to the outside.

When taking out the foodstuffs inside after cooking, the upper part is cut off along the cut line 13 indicated on the upper part of the bag body using a jig such as scissors, and the engagement of the chuck mechanism 20 is released to release the bag. All you have to do is open the upper part of your body.

The used packaging container 1 in which the upper part of the bag body is cut off and opened can be reused by the presence of the chuck mechanism 20. That is, as shown in FIG. 4, since the upper part of the bag is fully open, for example, in each household, a predetermined amount of unheated or cooked food is packed inside the bag. , Closing the chuck mechanism 20,
It can be cooked in the microwave as it is. In such a case, the inside of the used bag is washed to prepare for reuse.

In the case of re-use, the valve mechanism 10 is in a released state, but the upper part of the bag is closed by closing the chuck mechanism 20, and when the inside is inflated by heating cooking, Although the whole is in an inflated state, some air or steam escapes from the released valve mechanism 10 to the outside, but the inflated state is maintained as a whole and acts as a pressure cooker, and the cooking is effectively performed. Done in

In particular, when the internal pressure increases during cooking, the chuck mechanism 20 is configured to be hardly affected by the expansion. That is, as shown in FIG. 5, one base sheet 6 constituting the chuck mechanism 20 is heat-sealed in the sheet 3 only in the area 6c closer to the opening than the locking portion 6b. When the body is inflated by the internal pressure, the lower end portion of the base sheet 6 engaged with the base sheet 5 is drawn toward the sheet 2 and receives the internal pressure in the heat-sealed area 6c. become.

Therefore, even if the internal pressure becomes considerably high in the heating cooking, the chuck mechanism itself is hardly subjected to the internal pressure, and the engagement of the chuck mechanism does not easily disengage, and the packaging form is the initial state. State,
Even though the valve mechanism is in the released state, only a narrow gap is opened, so that foodstuffs do not spill in the microwave oven, and can be reused repeatedly.

FIG. 6 shows a packaging bag or packaging container 21 according to the second embodiment. In the second embodiment, a single chuck mechanism 20 is used, the upper seal portion is omitted, and the chuck mechanism 20 is provided at the upper opening of the bag body. Therefore, the structure below the chuck mechanism 20 is the same as that of the first embodiment, and thus the same reference numerals are given and the description is omitted.

The packaging container 21 according to the second embodiment comprises:
At the initial stage, the ingredients are not packed and sold as microwave-compatible packaging containers, and the user who purchased this packaging container arbitrarily packs the appropriate ingredients to be cooked at home and the appropriate seasonings. Chuck mechanism 2
It can be cooked in a microwave oven with 0 closed.

In the first use, when the chuck mechanism 20 is closed, the upper portion of the bag body is in a sealed state. When the internal air expands due to heating and the internal pressure rises, the weakness of the valve mechanism 10 is reduced. The point that the seal portion 11 peels off to release the internal pressure is the same as in the first embodiment, and the internal pressure rises and acts like a pressure cooker. The food does not scatter.

After the cooking, the chuck mechanism is opened and the cooked contents are taken out and eaten. After the cooked contents are taken out, the inside is washed and reused for the next cooking. You can. In this case, as in the first embodiment, the valve mechanism is in a detached state, but the chuck mechanism can be opened and the next ingredient can be filled and used for heating and cooking.

In any case, the packaging container according to the present invention is provided with a single or double chuck mechanism and a valve mechanism at the upper part of the bag body. Because it is in a completely sealed state, even if the handling is somewhat rough in the distribution process, the packaged food does not jump out or leak, and when it is requested as a microwave-compatible package or packaging container Even if the appropriate ingredients and seasonings are stored, the chuck mechanism is closed, and heating and cooking is performed in the first microwave oven, the bag body or the packaging container does not rupture due to the peeling of the valve mechanism and is efficiently heated. It can be cooked and then used repeatedly as a microwave oven packaging without having to discard the packaging.

[0031]

As described above, the food packaging container for a microwave oven according to the present invention is a bag-like container that can be installed in an upright state with its bottom portion expanded, and a chuck mechanism is provided at the top of the bag body. In the first packaging of foodstuffs, the upper part of the bag is sealed and completely sealed by providing a valve mechanism that peels off by the internal pressure in the seal portions on both sides of the position close to the chuck mechanism. The packaged contents are safe without overflowing even during the distribution,
By heating and cooking in a microwave oven when eating, the valve mechanism peels off due to internal pressure and releases internal pressure to prevent rupture, and even after opening the upper part of the bag and taking out the contents, the chuck Because the mechanism is located at the top of the bag, new ingredients can be stored and sealed, cooked in a microwave oven, and can be reused repeatedly as a microwave-compatible packaging container. To play.

Although the valve mechanism is in a peeled state when reused, the valve mechanism is not largely released due to the presence of the side seal, so that a predetermined amount of food can be stored and the chuck mechanism is closed. In this way, the tentatively sealed state is maintained, and storage in the refrigerator is possible.After that, it is possible to cook with a microwave oven or the like while the chuck mechanism is closed, and at that time, the bag is heated by heating. As the internal pressure rises and plays a role of a pressure cooker, not only can ingredients be cooked deliciously, but also because they can be reused, they are not disposable as packaging containers, saving resources and discharging waste. It has an excellent effect that it can be greatly suppressed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically showing a packaging container according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a packaging state of the packaging container.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 cuts off the upper seal part in the packaging container,
FIG. 4 is an enlarged cross-sectional view of a main part in which a chuck mechanism is released for reuse.

FIG. 5 is a diagram illustrating the packaging container;
It is the principal part enlarged sectional view which showed the state which closed the chuck | zipper mechanism for re-use and the internal pressure rose in the heating cooking.

FIG. 6 is a perspective view showing a packaging container according to a second embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1, 21 Packaging container 2, 3 sheet 4 Bottom member 5, 6 Base sheet 5a, 5b, 6a, 6b Locking section 6c Opening side area 7 Storage section 8 Bottom seal section 9 Side seal section 10 Valve mechanism 11 Weak seal part 12 Upper seal part 13 Cut line 20 Chuck mechanism

Claims (5)

[Claims] 1. A bag-like container which can be installed in an upright state with its bottom portion expanded, wherein a chuck mechanism is provided at an upper portion of the bag body, and peeled off by internal pressure at seal portions on both sides at positions close to the chuck mechanism. A food packaging container compatible with a microwave oven, comprising a valve mechanism. 2. A bag body extending further upward from the chuck mechanism, and an upper seal portion is provided via a separating line.
A food packaging container compatible with a microwave oven as described in 1. 3. The chuck mechanism according to claim 1, wherein a single chuck or a double chuck formed separately is integrally attached to the inside of the bag body by sealing a base sheet portion.
A food packaging container compatible with a microwave oven as described in 1. 4. The food packaging container for a microwave oven according to claim 1, wherein at least one base sheet of the chuck mechanism is sealed to a bag body only at an upper portion thereof. 5. The food packaging container according to claim 1, wherein the valve mechanism has a delta shape in which the inside of the bag is expanded, and a narrow portion in the outer direction of the bag is formed as a weak seal portion.