JP3463296B2 - Packaging box of sealed packaged food and hermetically sealed packaged food packaged in packaging box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetically packaged food packaging box and a hermetically sealed food packaged with the packaging box.

[0002]

2. Description of the Related Art Today, many foods are distributed as hermetically sealed foods by hermetically and liquid-tightly enclosing them in a packaging bag made of a film made of synthetic resin or the like.

Some of such hermetically-sealed foods are cooked in a hermetically-sealed state before being shipped, and are mixed before the hermetically-sealed foods are manufactured, stored, distributed and eaten. In order to prevent spoilage, deterioration, discoloration, change in taste, etc. due to bacteria that are present, the packaged food may be heat-sterilized in the state before being shipped.

As described above, the sealed packaged food is often heated before shipping, but when a general consumer eats it, even such a sealed packaged food is heated in a microwave oven or the like. Often.

In this case, in order to prevent the packaging bag of the hermetically sealed packaged food from bursting due to an increase in internal vapor pressure during heating, the packaging bag is opened and the contents are put in another container and then put in the container. It may be heated in the state, and in the opened state of the packaging bag, the packaging bag may be heated by putting it in an appropriate container with its opening opening facing upward so that the contents do not spill.

In addition, a packaging bag which does not need to be opened for heating has been proposed and put into practical use today. That is, it is a packaging bag provided with a steam escape portion that opens when the internal vapor pressure rises above a predetermined pressure during heating of the sealed packaged food. The sealed packaged food using such a packaging bag can be heated without opening.

[0007] On the other hand, the sealed packaged food is made of paper or the like so as to be convenient for storage, transportation, display, etc. It is often packaged in a plastic packaging box.

[0008] Since many of the boxes have a flat shape in the sealed packaged food, generally, a flat rectangular parallelepiped shape is often seen.

As described above, in the box containing the sealed packaged food, a part of the food packaging bag is opened in order to release the vapor in the sealed packaged food, the pressure of which increases when the sealed packaged food is heated by a microwave oven or the like. In this case, there has been proposed a box body that holds the sealed packaged food product in a standing posture so that the opened portion can be set up and heated while avoiding the contents from flowing out.

It has been pointed out that heating the entire box in this manner reduces the risk of burns when taking it out of the heater.

[0011]

However, as described above, most of the sealed packaged foods have a flat shape as a whole, and therefore, when the sealed packaged foods are held in an upright position and heated in a microwave oven, many of them are used today. In microwave ovens used at home, the microwave irradiation efficiency of sealed packaged foods decreases and it takes time to heat them.

Most of the boxes that can hold the sealed packaged food in a standing posture are flat in transportation, storage, exhibition, etc., and are deformed to keep the sealed packaged food in a standing posture. The structure is complicated and the box manufacturing cost is high.

In this respect, when the internal vapor pressure rises above a predetermined pressure, in a sealed packaged food using a packaging bag provided with a vapor escape portion which opens due to the vapor pressure, the packaging bag is not opened upon heating. Since it is not present, it is possible to heat the food in a flat position and it is not necessary to provide a box body having a structure capable of holding such a sealed packaged food product in a standing position.

However, even in such a sealed packaged food,
In order to eliminate the risk of burns when taking out from the heater,
Alternatively, in order to reduce the amount and to save the trouble of separately preparing a container and the like, it is desirable that the container can be heated in the packaging box.

In that case, it is necessary to devise so that the content does not spill out from the steam escape portion when it opens, or so that it does not spill out as much as possible. There are several points to be solved, such as that the steam that is still blowing from the escape port or the contents that may blow out with the steam must be devised so as not to be burned.

Therefore, the present invention relates to a box body for packaging a hermetically sealed food product using a packaging bag provided with a vapor escape portion which opens when the internal vapor pressure rises above a predetermined pressure by heating. , To provide the following boxes. (1) The sealed packaged food can be efficiently heated in a microwave oven or the like while the sealed packaged food is stored in a flat state, and the steam is smoothly discharged from the steam escape portion of the packaging bag of the sealed packaged food. A packaging box for hermetically-sealed foods that can be released into a box. (2) When it is taken out from a microwave oven or the like, it is possible to reduce the risk of being burned by touching the heated sealed packaged food itself, and the steam that may still be blown out from the steam escape section of the sealed packaged food opened or A packaging box body for hermetically sealed food products, which is less likely to be burned by the contents that may be blown out together with the steam. (3) When the sealed packaged food is taken out further in a flat position so that the sealed packaged food can be efficiently heated, and in a state where steam can smoothly escape from the steam escape section of the packaging bag of the sealed packaged food. The sealed packaged food is placed in a heater such as a microwave oven in a state where there is little risk of being burned by steam that may still be blown out from the opened steam escape portion or contents that may be blown out together with the steam. A package box for hermetically sealed food that can be guided. (4) A package box for hermetically-sealed foods in which hermetically-sealed foods can be taken out easily. (5) A packaging box for hermetically sealed packaged food, which has a simple structure and is inexpensive as compared with a conventional box that can hold the enclosed packaged food in a standing posture.

Furthermore, the present invention relates to a hermetically sealed packaged food using a packaging bag provided with a steam escaping portion which opens when the internal steam pressure rises above a predetermined pressure by heating. An object of the present invention is to provide a sealed packaged food, which is housed and packaged in a box having the advantages described in (3) to such a state that the box advantage can be utilized when heating each box by a microwave oven or the like.

[0018]

In order to solve the above problems, the present invention provides the following packaging box body for sealed packaged food and sealed packaged food. (1) A package box for sealed packaged foods, which uses a packaging bag provided with a steam escape portion that opens when the internal vapor pressure rises above a predetermined pressure by heating the package box for sealed packaged foods. , A flat rectangular parallelepiped shape, which is a line for breaking the ceiling wall formed on the ceiling wall, the line for breaking the ceiling wall extending at least between both side walls connected to the ceiling wall, and the line formed on each side wall A side wall breaking line, which extends from the top wall to the bottom wall facing the top wall in series with the top wall breaking line,
A side wall rupture line extending downwardly in a direction gradually approaching the front wall and gradually distant from the rear wall, and a pair of bottom wall rupture lines formed on the bottom wall, each of the side wall rupture lines. Along the bottom wall, along the bottom wall, the inner side of the side edge of the boundary part of the boundary part of the bottom wall with the front wall
And a line for breaking the bottom wall extending to a portion of the sealed box for the sealed packaged food.

The line for breaking the ceiling wall may extend only between the both side walls connected to the ceiling wall, but it extends across the both side walls and further extends along the boundary with each side wall of the ceiling wall. May be.

Further, a breaking line may be formed at a portion of the ceiling wall closer to the rear wall than the ceiling wall breaking line to form a thin strip-shaped breaking portion together with the ceiling wall breaking line. In this case, a breaking line for forming a tab (knob) for breaking and removing the thin strip-shaped breaking portion may be further formed on the top wall and / or the side wall. (2) Sealed packaged food packaged in a package box of the sealed packaged food according to the present invention,
A sealed packaged food using a packaging bag provided with a steam escape portion that opens due to the steam pressure when the internal vapor pressure rises above a predetermined pressure due to heating, and the steam escape portion before the packaging box body is broken. A hermetically sealed packaged food, which is arranged toward the inner surface of the top wall and / or the inner surface of the front wall and is arranged closer to the front wall than the line for breaking the top wall.

The distance from the ceiling wall breaking line to the front wall (eg, the maximum distance from the ceiling wall breaking line to the front wall) in the packaging box of the hermetically sealed packaged food according to the present invention is the maximum expansion due to heating of the hermetically sealed packaged food. It is desirable that the height is higher than the height from the bottom wall of the box.

According to the packaging box body of the present invention, a sealed packaged food is used, that is, a packaging bag provided with a vapor escape portion which opens due to the vapor pressure when the internal vapor pressure rises above a predetermined pressure by heating. It can contain the sealed packaged food. In that case, the vapor escape portion of the sealed packaged food is arranged toward the inner wall and / or the inner wall of the front wall of the packaging box before the rupture and is located closer to the front wall than the line for breaking the top wall. It can be housed so as to be arranged. Then, it is possible to obtain the sealed packaged food packaged in the packaging box body according to the present invention which is housed in this manner.

In the packaging box body according to the present invention, the top wall breaking line, the side wall breaking lines connected to the top wall breaking line, and the pair of bottom wall breaking lines connected to the top wall breaking line are broken, whereby a portion of the top wall near the front wall is broken. Can be raised and the front wall can be opened by positioning it on the same plane as the bottom wall. In this way, since the front wall can be located and opened on the same plane as the bottom wall,
The box is broken along the breaking line and opened, and the front wall is positioned on the same plane as the bottom wall in a stable box posture, and the sealed packaged food inside is laid flat. For example, it can be put in a microwave oven as it is and heated while being efficiently irradiated with microwaves. In other words, the hermetically sealed packaged food inside is naturally guided into, for example, a microwave oven while lying flat, and can be efficiently heated while being irradiated with microwaves.

Further, in the sealed packaged food, the vapor escape portion of the packaging bag is arranged so as to face the inner surface of the top wall and / or the inner surface of the front wall of the packaging box before the break, and the portion closer to the front wall than the line for breaking the top wall. In other words, in the sealed packaged food according to the present invention, when the box is opened, the steam escape portion of the packaging bag is located outside the box body and / or ) It is directed toward the front wall of the upright wall, and in that state it is placed in a heater such as a microwave oven together with the box. It may also be naturally guided to do so and placed in a heater such as a microwave oven.

In this way, the hermetically sealed packaged food is heated with the vapor escape portion of the packaging bag directed toward the outside of the box body and / or the portion near the front wall of the raised ceiling wall in the opened part of the box body. Since it is arranged inside the vessel, when the steam escape portion opens due to the internal steam pressure due to heating, the steam can smoothly escape from the opening. At this time, the part of the packaging bag that is still expanded by the increase in internal vapor pressure due to heating is still surrounded by the box wall, the expansion is suppressed by the box wall, and the expansion is suppressed, Is smoothly discharged from the steam escape portion through the packaging bag portion located in the opened portion of the box body.

In the sealed packaged food, the steam escape portion of the packaging bag is directed toward the outside of the box body and / or the portion near the front wall of the raised ceiling wall in the opened part of the box body and the heater. Burned by the steam that may still be blown from the open steam escape portion of the sealed packaged food or the contents that may blow out together with the steam when the sealed packaged food is taken out from the heater. The fear of can be suppressed by using a portion of the raised ceiling wall near the front wall as a shield.

In this case, if the distance from the line for breaking the top wall of the box to the front wall is made larger than the height from the bottom wall of the box at the time of maximum expansion due to heating of the sealed packaged food, such burn injury will occur. The fear can be further reduced.

Since the whole box is heated, it is of course possible to reduce the risk of burns caused by touching the heated sealed packaged food itself.

Further, in the box body according to the present invention, since the portion of the top wall near the front wall can be raised and the front wall can be located on the same plane as the bottom wall and can be opened wide, the sealed packaged food inside. Easy to take out.

Further, the box body according to the present invention has a simple structure and can be manufactured at a low cost as compared with the conventional box body which can hold the sealed packaged food contained therein in a standing posture.

[0031]

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

FIG. 1 is a perspective view of an example (A) of a packaging box body for hermetically sealed food according to the present invention. FIG. 2 is a bottom view of the same box. FIG. 3 is a side view with the box opened.
The sealed packaged food (B) is contained in this box.

The box A shown in the figure has a flat rectangular parallelepiped shape as a whole, and includes a top wall 1, a bottom wall 2 facing the top wall 1, both side walls 3 and 3 connecting the top wall 1 and the bottom wall 2, It further comprises a front wall 4 and a rear wall 5.

A line 11 for breaking the top wall is formed on the top wall 1. This line 11 is a side wall 3 connected to the top wall,
It extends over a distance between the top wall 1 and the side wall 3 of the top wall 1 and extends slightly along the boundary portion 10.

A side wall breaking line 31 is formed on each side wall 3. The line 31 extends from the top wall 1 to the bottom wall 2 in a continuous manner with the top wall breaking line 11. Further, it gradually extends away from the rear wall 5 and extends with a downward inclination in a direction of gradually approaching the front wall 3.

A pair of bottom wall breaking lines 21 are formed on the bottom wall 2. Each line 21 is a side wall breaking line 31
Is connected to the lower end of the bottom wall 2 and extends along the bottom wall 2 to the boundary portion 20 with the front wall 4 of the bottom wall. Furthermore, in FIG. 1 and FIG.
As shown, each line 21 is below the side wall break line 31.
A boundary portion 2 which is continuous with the end and extends along the bottom wall 2 with the front wall 4
0, extending to the inner side from the side edge of the boundary
There is.

Further, another breaking line 12 is formed on the ceiling wall 1. The line 12 is provided at a portion closer to the rear wall 5 than the line 11 for breaking the top wall,
A thin strip-shaped breaking portion 13 together with the ceiling wall breaking line 11
Is formed. Further, a breaking cutting line 132 for forming a tab (knob) 131 for starting the breaking removal of the thin strip-shaped breaking portion 13 is formed along the boundary portion 10 between the top wall 1 and the side wall 3. There is.

The sealed prepackaged food B housed in the box body A, as shown in FIG. 4 (A), the food 7 to the flexible packaging bag 6 made of synthetic resin or the like liquid-tight, air-tight It is hermetically sealed.

The packaging bag 6 has a peripheral edge portion 61 attached thereto, and further has an attachment portion 62 on the upper side at a portion near one end. The upper bonding portion 62 is laid down along the upper surface of the packaging bag.

A notch 611 for opening the packaging bag is formed in a portion of the peripheral edge portion 61 of the packaging bag 6 which is closer to the one end than the upper bonding portion 62. Upper bonding section 62
A steam escape portion 621 is provided in the central portion of. The vapor escape portion 621 has a bonding width S ′ shorter than the bonding width S in other bonding portions. As a result, when the internal vapor pressure rises above a predetermined pressure during heating, the bonded portion of the vapor escape portion 621 is broken and opened due to the vapor pressure.

The sealed packaged food B is arranged in the packaging box A with the vapor escape portion 621 facing the inner surface of the top wall 1 of the packaging box A before breaking and opening, and for breaking the top wall. It is arranged so as to be located closer to the front wall 4 than the line 11.

The maximum distance L from the ceiling wall breaking line 11 to the front wall 4 is a height H (from the bottom wall 2 of the box body at the time of maximum expansion of the sealed packaged food B contained in the box A due to heating). Figure 4
(See (B)).

According to the packaging box A, the top wall breaking line 11 and the both side wall breaking lines 31, 3 connected to it.
1. Further, a pair of bottom wall breaking lines 21 connected to it,
By breaking 21, as shown in FIG. 3, the portion 100 of the top wall 1 near the front wall 4 can be raised, and the front wall 4 can be positioned and opened on the same plane as the bottom wall 2.

When the box A is opened in this manner, the breaking line 132 for forming the tab (knob) 131 on the top wall 1 is broken to make the tab 131, and the thin strip-shaped break is formed. By removing the working portion 13 by holding the tab 131 and pulling the ceiling wall portion 100 upward by inserting a finger into the opening of the ceiling wall formed by this, each remaining break line can be easily broken. Can be opened.

When the thin strip-shaped breaking portion 13 is not provided, the ceiling wall breaking line 11 is partially broken by pushing it with a finger or the like, and the ceiling wall portion 100 is pulled up from there. Can break each remaining break line.

In this way, in the state where the front wall 4 is located on the same plane as the bottom wall 2 and is opened, the box A and the sealed packaged food B
Can be placed in a heater such as a microwave oven for heating.

In this case, the box A is in a stable box posture in which the front wall 4 is located on the same plane as the bottom wall 2 and is open, and the sealed packaged food B inside is laid flat, for example. It can be put in a microwave oven and heated while efficiently radiating microwaves.

In other words, the sealed packaged food B inside is naturally guided to the inside of, for example, a microwave oven in a flatly laid posture, and can be efficiently heated while being irradiated with microwaves.

In the hermetically sealed packaged food B, the vapor escape portion 621 of the packaging bag 6 is arranged toward the inner surface of the top wall 1 of the packaging box A before breaking and the front wall 4 from the top wall breaking line 11. Since the box A is opened, the steam escape portion 621 of the packaging bag 6 of the sealed packaged food B is raised outside the box or raised in the opened part of the box A when the box A is opened. Further, it is directed to the portion 100 near the front wall of the ceiling wall 1, and in that state, the box A is placed in a heater such as a microwave oven. It may also be naturally guided to do so and placed in a heater such as a microwave oven.

As described above, the hermetically sealed food B has its packaging bag 6
Since the steam escape portion 621 of is directed toward the outside of the box body or the raised ceiling wall portion 100 in the inside of the heater in the opened portion of the box body A, the steam escape portion 621 is heated by the internal steam pressure. When it opens, steam can escape smoothly from it. In addition, at this time, the expansion of the portion 60 (see FIG. 3) of the packaging bag 6 that is still surrounded by the box wall due to the increase in internal vapor pressure due to heating is suppressed by the box wall, and the expansion is suppressed. In the packaging bag portion 6 where the vapor pressure in the portion 60 is located in the opened portion of the box A.
It is smoothly discharged from the steam escape portion 621 via 0 '.

In the sealed packaged food B, the steam escape portion 621 of the packaging bag 6 is directed to the outside of the box body or the raised ceiling wall portion 100 in the microwave oven or the like in the opened portion of the box body A. Since it is arranged, when the sealed packaged food B is taken out from the microwave oven or the like, the steam that may still be blown out from the steam escape portion 621 opened in the sealed packaged food B or the food 7 which may be blown out together with the steam. It is possible to suppress the fear of burns caused by a part of the above as a shield of the raised top wall portion 100.

At this time, the line 11 for breaking the top wall of the box A
Since the distance L from the front wall 4 to the front wall 4 is larger than the height H from the box bottom wall 2 when the sealed packaged food B is expanded by heating, the risk of burns can be further reduced.

Since the whole box A is heated, it goes without saying that the heated packaged food B itself can be taken out with little fear of being burned.

Further, since the box A can be opened upright by raising the top wall portion 100 and positioning the front wall 4 on the same plane as the bottom wall 2, it is easy to take out the sealed packaged food B inside. There is also.

Further, the box A has a simple structure and can be manufactured at a low cost as compared with the conventional box which can hold the sealed packaged food contained therein in a standing posture.

The vapor escape portion in the packaging bag of the hermetically sealed food is not limited to the above-mentioned 621, and various structures can be adopted.

Further, since the packaging box body according to the present invention exemplified by the packaging box body A has a flat rectangular parallelepiped shape,
It is easy to store, transport, and display flat food in a sealed package.

The ceiling wall breaking line is not limited to the above. FIG. 5 shows another example A ′ of the packaging box body according to the present invention.
Is shown. Line 1 for breaking the top wall of this box A '
1'extends in a trapezoidal shape across the side walls 3,3. A line 1 for breaking at a position on the rear wall 5 side from the line 11 '
2'is formed, and a strip-shaped breaking portion 13 'is formed between both lines 11', 12 '. The other points are the same as the box A shown in FIG. The same parts as those in the box A shown in FIG. 1 are designated by the same reference numerals as those in FIG.

[0059]

As described above, according to the present invention, there is provided a hermetically sealed packaged food using a packaging bag provided with a steam escape portion which opens when the internal steam pressure rises above a predetermined pressure by heating. It is possible to provide a packaging box that has the following advantages. (1) The sealed packaged food can be efficiently heated in a microwave oven or the like while the sealed packaged food is stored in a flat state, and the steam is smoothly discharged from the steam escape portion of the packaging bag of the sealed packaged food. Can escape to. (2) When taking out from a microwave oven or the like, it is possible to reduce the risk of being burned by touching the heated sealed packaged food itself, and vapor that may still be blown out from the open steam escape portion of the sealed packaged food or There is less risk of burns due to contents that may blow out with the vapor. (3) When taking out the further sealed packaged food in a flat position so that the sealed packaged food can be efficiently heated, and in a state where steam can be smoothly released from the steam escape portion of the packaging bag of the sealed packaged food. The sealed packaged food is placed in a heater such as a microwave oven in a state where there is little risk of being burned by steam that may still be blown out from the opened steam escape portion or contents that may be blown out together with the steam. Can be guided to. (4) It is easy to take out the sealed packaged food. (5) The structure is simple and inexpensive as compared with the conventional box body that can hold the enclosed packaged food in a standing posture.

According to the present invention, there is also provided a hermetically-sealed packaged food using a packaging bag provided with a vapor escape portion that opens when the internal vapor pressure rises above a predetermined pressure. In the box body having the advantage described in (3),
It is possible to provide a hermetically sealed packaged food packaged and packed in a state where the advantages of the box body can be utilized when the box body is heated by a microwave oven or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of a packaging box body for hermetically-sealed food according to the present invention.

FIG. 2 is a bottom view of the box body shown in FIG.

FIG. 3 is a side view showing a state where the box body shown in FIG. 1 is opened.

FIG. 4A is a plan view of a hermetically sealed food product, and FIG. 4B is a diagram showing an expanded state of the hermetically packed food product by heating.

FIG. 5 is a perspective view of another example of the packaging box body for hermetically sealed food according to the present invention.

DESCRIPTION OF SYMBOLS Hereinafter, embodiments of the present invention will be described with reference to the drawings. A, A'Package box for hermetically sealed foods 1 Top wall 2 Bottom wall 3 Side wall 4 Front wall 5 Rear wall 11, 11 'Top wall breaking line 10 Boundary part of top wall 1 with side wall 3 Side wall breaking line 21 Bottom Wall Breaking Line 20 Boundary Part 12 with Front Wall of Bottom Wall 2, 12 'Breaking Line 13, 13' Strip-shaped Breaking Part 131 Tab (Knob) 132 Break Breaking Line for Forming Tab 131 L Distance from the ceiling wall break lines 11, 11 'to the front wall 4 100 Part of the ceiling wall 1 near the front wall 4 Sealed packaged food 6 Packaging bag 61 Peripheral part 611 of the packaging bag 6 Notch 62 for opening the packaging bag Bonding part 621 Steam escape part S ′ Bonding width S of the steam escape part in the bonding part 62 Bonding width H of the other part in the bonding part 62 The bottom wall of the box at the time of maximum expansion due to heating of the sealed packaged food B Height from 2 60 Packaging bag 6 The part 60 'that is still surrounded by the wall of the box body The packing bag part that is located in the open part of the box body A

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 51-60934 (JP, U) Utility model registration 2582713 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65D 5 / 54 A23L 3/00 101 B65D 33/16 B65D 81/26

Claims (4)

(57) [Claims] 1. A packaging box body for sealed packaged foods, which uses a packaging bag provided with a steam escape portion that opens when the internal vapor pressure rises above a predetermined pressure by heating, and is a flat rectangular parallelepiped. It has a shape and is a ceiling wall breaking line formed on the ceiling wall, which extends at least between both side walls connected to the ceiling wall and a sidewall breaking line formed on each sidewall. There, a side wall breaking line extending in a downward slope in a direction gradually approaching the front wall while gradually distant from the rear wall, extending from the top wall to the bottom wall facing the top wall in series with the top wall breaking line, A pair of bottom wall breaking lines formed on the bottom wall, each of which is continuous with the lower end of each of the side wall breaking lines, and along the bottom wall, the boundary portion of the boundary portion with the front wall of the bottom wall . Side edge
And a line for breaking the bottom wall extending to a portion closer to the inner side of the container . 2. The packaging box body for sealed packaged food according to claim 1, wherein the ceiling wall breaking line extends between the both side walls and further extends along a boundary portion between the ceiling wall and each side wall. . 3. A package for packaging the sealed packaged food according to claim 1 or 2, wherein a vapor escape portion is provided which opens when the internal vapor pressure rises above a predetermined pressure by heating. A sealed packaged food using a bag, wherein the vapor escape portion is arranged toward the inner surface of the top wall and / or the inner surface of the front wall before the rupture of the packaging box body and before the top wall rupture line. A hermetically-sealed food packaged in a packaging box characterized in that it is arranged so as to be located closer to the wall. 4. The sealed packaged food according to claim 3, wherein the distance from the line for breaking the top wall of the box to the front wall is larger than the height from the bottom wall of the box when the sealed packaged food is expanded by heating.