JP2023077017A - Pouch packaging box for microwave oven - Google Patents

Abstract

To provide a steam-permeable pouch storage box for a microwave oven by regulating the length from a front surface plate corresponding to a pillow part of the storage box to an opening easy-to-cut line, and providing a structure for preventing the tip of a pouch from being bent during microwave oven cooking.SOLUTION: A paper box for storing a microwave oven pouch (4) inside, which can be heated and cooked by a microwave oven, comprises a top surface plate (11), a bottom surface plate (16) which is opposed to the top surface plate and has the same size, and a front surface plate, a rear surface plate, a left side surface plate, and a right side surface plate which are respectively locked to four sides of the top surface plate and the bottom surface plate. A pouch storage box (1) for the microwave oven comprises an opening easy-to-cut line (2) continuously connected from the left side surface plate to the top surface plate and the right side surface plate; and a bottom folding line (3) continuously connected to the opening easy-to-cut line on a bottom surface plate, wherein a distance of the opening easy-to-cut line from the front surface plate is 3 to 22 percent of an entire length of the top surface plate with respect to a length of the pouch.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage box capable of storing and simultaneously heating pouches for storing simple cooking foods that are mainly cooked by dielectric heating by microwave irradiation.

In recent years, pillow packaging bags with heat-sealed back seals and upper and lower edges, standing pouches, etc. are used to store retort pouches, etc., and put them in packaging bags in microwave ovens, etc. There is a package that heats as it is.
To heat such a package, pillow packaging bags are heated with the venting back seal facing upward. In the case of the standing pouch, the bottom is turned down and the steam vent is processed in advance, and when the steam vent is preferentially opened by heating, the internal pressure inside the package rises to a certain level. It is set so that the internal pressure can be maintained for a certain period of time during which steam, etc., is started to be removed and cooking is done.
By the way, if the package as described above contains a dipole component such as moisture of the food stored inside, it will vibrate with microwaves and reach a high temperature and be heated. However, when the temperature of the pouch rises to 100°C or more, which causes steam generation, not only is the temperature of the pouch itself high, but steam and steam mixed with the internal contents are generated. There was also the problem of dirtying the surroundings.
Therefore, a method of covering the packaging bag with a heat-insulating paper box or the like is conceivable.

For example, in Patent Document 1,
A paper box for storing a range pouch that can be heated and cooked in a microwave oven, wherein the paper box comprises a top plate, a left side plate whose top end is continuous with the left end of the top plate, and a right end of the top plate. a right side plate with a continuous upper end; a bottom plate that is continuous with the lower end of the left side plate and the lower end of the right side plate and faces the top plate; a front plate that is continuous with the front end of the top plate; and a rear end of the top plate. and an easy-to-cut opening line that is continuously connected to the top plate, the left side plate, and the right side plate and is arranged near the front plate,
The bottom plate has a bottom bending line that extends linearly so as to be connected to the easy-to-cut opening line, and a plurality of bottom cut lines that are continuously arranged in a broken line shape so as to overlap the bottom bending line. have
The bottom cut line, which is part of the plurality of bottom cut lines and is provided near the left side plate and the right side plate, has one end on the center side of the bottom plate connected to the rear end of the bottom plate. It is a curved cut line with a shape that is bent toward
A microwave pouch storage box is proposed, wherein one end of the curved cut line opposite to the center side overlaps the bottom folding line, and one end of the center side does not overlap the bottom folding line. ing.

Since this pouch storage box also has heat insulating properties, it is possible to take out pouches that have been heated in a microwave oven without getting burned.
However, due to the long pillow portion of the carton and the low position of the ventilating portion of the pouch, the pillow portion was bent and the tip of the pouch was easily bent, resulting in a problem that normal ventilating was not possible.

Japanese Patent No. 6586784

Therefore, the length from the front plate corresponding to the pillow portion of the storage box to the easy-to-open cutting line is defined to provide a structure in which the tip of the pouch does not bend during microwave cooking, thereby obtaining a pouch storage box for microwave ovens that facilitates steaming. That is the subject of the present invention.

The range pouch storage box according to claim 1 of the present invention is
A paper box for storing a range pouch that can be heated and cooked in a microwave oven,
A paper box comprising: a top plate; a bottom plate of the same size facing the top plate; hand,
It has an easy-to-open cutting line that is continuously connected from the left side plate to the top plate and the right side plate,
The bottom plate has a bottom bending line continuously connected to the opening easy cutting line,
The easy-to-open cut line is 3 to 22% of the total length of the top plate from the front plate with respect to the length of the pouch, and the steam vent is located in front of the easy-to-break line of the top plate. This is a range pouch storage box characterized in that it is on the face plate side.

In the microwave pouch storage box of the present invention, the distance from the front plate to the length of the pouch is 3 to 22% of the total length of the top plate, so that the pillow portion is formed on the front plate side from the bottom bending line. When the pouch is bent, the tip of the pouch does not bend and steam can be stably passed. Moreover, even when heated to a high temperature by steaming, the paper box is used so that the outer surface can be kept at a temperature low enough to prevent burns, and the surroundings can be made less dirty by steaming.

1 is a plan view, a side view, and a bottom view showing the unopened packaging form of the first embodiment of the microwave pouch storage box according to the present invention. FIG. 1 is a blank used in the first embodiment of the microwave pouch storage box according to the present invention. 1 shows a vertical cross-sectional view showing a packaging form when an embodiment example of a microwave pouch storage box according to the present invention is opened and heated, a figure at the time of heating, and an example when a comparative form example is opened. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical cross-sectional view, a partially enlarged view thereof, and a plan view showing an example of the form of a pouch to be stored in the microwave pouch storage box according to the present invention;

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a microwave pouch storage box of the present invention will be described below with reference to the drawings.
FIG. 1-1 is a plan view showing a first embodiment of a microwave pouch storage box 1 according to the present invention, showing a packaging form when unopened.
The top plate 11 shown in the plan view has an opening easy cutting line 2 that extends from the left side plate 12 to the right side plate 13 .
The easy-to-break opening line 2 is a cutting line that can be easily broken, and even if it is an easy-to-break line processed with perforations, the easy-to-break line is cut in half by inserting a blade into half of the thickness, and a laser beam is scanned. An easy-to-break wire obtained by burning off half of the thickness by irradiation heat, etc. can be used.
The easy cutting line 2 starts from the same position near the front plate 14 on both the left side plate 12 side and the right side plate 13 side, and bulges toward the rear plate 15 side at the center of the top plate 11.例文帳に追加

1-2 shows a left side plate 12, in which an opening easy cutting line 2 is provided from the top plate 11 side toward the bottom plate 16 side. The opening easy cutting line 2 of the left side plate 12 has a linear shape parallel to the front plate 14 side, and the right side plate 13 has a similar shape.

1-3 represent the face of the bottom plate 16. FIG. The bottom plate 16 has a bottom bend line 3 that connects the left side plate 12 to the right side plate 13 .
The bottom bending line 3 is a straight line parallel to the front plate 14 and connected to the opening easy cutting line 2 of the left side plate 12 and the right side plate 13 .
The bottom bending line 3 may be a simple ruled line, or may be a breaking line. However, it is preferably straight and parallel to the front panel 14 for ease of bending.

FIG. 2 shows a blank used in the first embodiment of the microwave pouch storage box according to the present invention.
The bottom plate 14, the left side plate 12, the top plate 11, the right side plate 13, and the right side plate bottom margin 133 have the same width and are secured to each other. These are assembled into a cylindrical shape by attaching the right side plate bottom margin 133 to the inside of the right side plate 13 via the fastening ruled line.
As can be seen from the blank, the easy-to-cut open line 2 of the top plate 11 is continuously connected to the left and right side plates 12 and 13, and the easy-to-open cut line 2 of the left and right side plates 12 and 13 is connected. A line 2 connects to the left and right of the bottom fold line 3 .
A front plate 14 and a rear plate 15 are fixed to the top plate 11 in a direction perpendicular to the side plates, and a front plate margin 141 and a rear plate margin 151 are fixed to the bottom plate 16. - 特許庁
Further, the left side plate 12 is secured to the front and rear thereof by a left side plate front margin 121 and a left side plate rear margin 122 .
Similarly, the right side plate 13 is secured to the front and rear thereof by a right side plate front margin 131 and a right side plate rear margin 132 .
The positions of the margin 121 in front of the left side plate and the margin 131 in front of the right side plate are preferably short so as not to be far from the distance from the front side of the left side plate 12 or the right side plate 13 to the easy breaking line.
A front panel margin 141 is attached to the inner side of the front panel 14, and a rear panel margin 151 is attached to the inner side of the rear panel 15 to form a storage box.

FIG. 3-1 is a vertical cross-sectional view showing the packaging form immediately before opening and heating the exemplary embodiment of the microwave pouch storage box 1 according to the present invention.
A range pouch storage box 1 contains a range pouch 4. - 特許庁

FIG. 4 shows an embodiment of the range pouch 4 . FIG. 4-1 is a longitudinal sectional view and its partial enlarged view, and FIG. 4-2 is a front view.
The microwave pouch 4 is a packaging bag in which the sealant surfaces of the front film 41 and the rear film 42 face each other and the peripheries of the upper seal portion 43, the lower seal portion 44, the left seal portion 45, and the right seal portion 46 are fused. be.
The front film 41 is composed of a film in which an upper upper front film portion 411 and a lower lower front film portion 412 are folded in a pleated shape at the vapor release portion 5 .
The vapor release portion 5 folded in a pleat shape faces the sealant surface at a position closer to the upper seal portion of the pouch to form a peeling seal portion 413 . That is, when the interior is heated to a high pressure, the peeling seal portion 413 is easily partially peeled first, and the cut portion 50 provided at the tip of the fold that seals the water vapor inside the pouch. It is a seal capable of forming a vapor release portion 5 that allows the vapor 51 to be released through the air and to keep the air pressure constant.
The place where the steam release portion 5 is formed is the peeling seal portion 413 which is easier to peel than the upper seal portion 43, the lower seal portion 44, the left seal portion 45, the right seal portion 46, and the like.
As a method for making the peeling easier, it is conceivable to use a partially peelable material for the sealing surface, to form a seal shape that is easy to peel, or to seal under sealing conditions that result in a low seal peel strength.
The peeling seal portion 413 forming the steam release portion 5 is provided at a position close to the upper seal portion and parallel to the upper seal portion. Further, an unsealing notch 414 for unsealing is provided below.

As shown in FIG. 3-1, the microwave pouch storage box 1 is torn along the easy breaking line 2 and bent 180 degrees along the bottom bending line 3 .
The folded storage box opens wide at the easy breaking line 2, and the tip of the pouch inside is exposed and visible.
At this time, the pillow portion 17, which is the front portion of the microwave pouch storage box 1 folded along the bottom folding line 3, is folded under the bottom surface on the side of the opening, tilting the opening and facing upward. so that the vent 5 is kept away from the contents.
That is, when the microwave pouch 4 is heated, it is tilted so that the contents do not blow out directly from the vapor venting part 5, and only gas such as water vapor can be vented from the cut part 50 of the vapor venting part 5. so that it is placed facing upwards.
In addition, the steam vent part 5 is positioned on the front plate 14 side of the position of the opening easy breaking line 2 of the top plate 11, and when it is opened during heating, the steam vent part 5 is positioned outside the opening part, and the pillow part 17 is positioned. When folded down, it should come above the opening.

FIG. 3-2 is a vertical cross-sectional view showing a state in which the microwave pouch storage box 1 according to the present invention is being cooked.
BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows the packaging form when opening and heating the embodiment example of the pouch storage box 1 for microwave ovens which concerns on this invention.
When a storage box containing a pouch is heated in a microwave oven, the inside of the pouch becomes hot and steam is generated, resulting in high pressure.
For this reason, a pressure is applied to peel off the seal portion, and the vapor release portion 5, which is set to have the weakest fusion bonding strength, is peeled off to form the vapor release portion 5.例文帳に追加
Contents are cooked by releasing internal steam 51 and the like from the steam release portion 5 to maintain a constant internal pressure.
At this time, the pillow portion 17 is bent downward and inclined so that the opening faces upward, the steam release portion 5 is positioned outside the opening, and the notch portion 50 is above the opening, so that the steam release portion The circumference of 5 is not blocked, and stable cooking is possible.

The present invention is as described above, and paperboard having a thickness and a basis weight of 120 to 400 g/cm ² is preferable as a paper base material for use in a microwave pouch storage box.
As the paper quality, a material capable of absorbing at least one of oil and water is used, and virgin paper, card paper, base paper for cups, coated cardboard, and the like can be used. Moreover, it may be one in which bleached kraft paper or high-quality paper is laminated on them.
A non-woven fabric may also be used. When non-woven fabric is used, it is desirable that the heat resistance is 200° C. or higher.
The paper substrate has the function of not conducting heat to the outer surface by heat insulation and the function of maintaining the shape as a surface, and it is desirable that it is easy to incinerate when discarded.

<Prototype example>
<Pouch> The composition of the pouch is as follows from the outside: glass-deposited polyethylene terephthalate film (thickness 12 μm) (inner surface printing)/adhesive/6-nylon (thickness 15 μm)/adhesive/unstretched polypropylene film (thickness 60 μm)
The shape of the pouch was 140 mm in width, 180 mm in length M, and 5 mm in sealing length of the upper sealing portion, the lower sealing portion, the left side sealing portion, and the right side sealing portion. Further, the distance B from the top to the root of the peeling seal portion was 40 mm, and the length of the peeling seal portion was 15 mm.
<Storage Box> A paperboard having a thickness of 350 g/cm ² and a basis weight was used for the configuration of the storage box.
The storage box has a width of 140 mm, a length L of 180 mm, a distance A from the front plate to the easy breaking line of the left side plate, and a shape deformed 15 mm toward the rear plate at the center of the easy breaking line of the top plate.
The breakable line was processed with perforations.
Three samples were prepared with A values of 3 mm, 5 mm, 10 mm, 20 mm, 30 mm, 35 mm, 40 mm, and 45 mm.

<Evaluation method>
200 g of curry was filled in the pouches of the prototype examples, each of which was airtightly sealed, and three pouches each were placed in a storage box for a microwave oven and evaluated.
Heating conditions were 600 W for 2 minutes.
The evaluation was performed by opening the opening of the microwave storage box at the pillow part between the front plate and the opening and the bottom bent part, and folding the upper part of the microwave storage box at the bottom bent part, just before heating in the microwave. It was confirmed that the pouch did not bend when placed in the state of .
Also, it was confirmed whether the pillow portion, which was bent so that the vapor release portion was kept at a high position, changed its shape due to heating and fell down when heated in a microwave oven.

<Evaluation results>
When the distance A from the front plate to the easy breakage line of the left side plate was 3 mm, the pouch did not bend, but the pillow fell down when heated in the microwave oven.
When the distance A from the front plate to the easy breakage line of the left side plate was 5 mm, 10 mm, 20 mm, and 30 mm, neither bending of the pouch nor falling of the pillow occurred.
When the distance A from the front plate to the easy breaking line of the left side plate was 35 mm and 40 mm, although the pouches were bent, the pillow did not fall down, and steam could be passed without problems.
When the distance A from the front panel to the easy breakage line of the left side panel is 45 mm, the pouch bends, the pillow collapses during heating in the microwave oven, and the steam port is covered with the pillow of the pouch storage box. Something happened.

From the above results, it was found that the distance A from the front panel to the easy breaking line of the left side panel should be 3 mm or more and 40 mm or less for safe microwave heating.
It was concluded that safe heating is possible by setting the ratio of the distance A from the front plate to the easy breaking line of the left side plate to the length M of the pouch from 3% to 22%. The above results are shown in Table 1.

In the microwave pouch storage box of the present invention, the distance from the front panel to the bottom folding line is 3 to 22% of the total length of the top panel relative to the length of the pouch. The pillow part does not bend and the pillow part does not fall down during heating, so that steam can be stably passed.
Moreover, even when heated to a high temperature by steaming, the outer surface can be kept at a temperature low enough to prevent burns because the paper box is used, and the surroundings can be heated without staining the surroundings due to steaming. can be safely cooked.
In particular, since the positions of the bottom-folding line and the easy-break-opening line are only adjusted with respect to the length of the pouch, the effect can be obtained without affecting the productivity and the price, so the merits of the present invention are great.

1....... Microwave Pouch Storage Box 11...Top Plate 12...Left Side Plate 121...Large Space 122 in Front of Left Side Plate... ..Right side panel rear margin 13:Right side plate 131:Right side plate front margin 132:Right side plate rear margin 133:Right side plate bottom margin 14 Front plate 141 Front plate margin 15 Rear plate 151 Rear plate margin 16 Bottom plate 17 ......Pillow part 2 .......Easy opening cutting line 3 .......Bottom bending line 4 ....... Microwave pouch 41 ... Front film 411 Upper front film portion 412 Lower front film portion 413 Peeling seal portion 414 Notch portion ( opening notch)
42 Rear film 43 Upper seal portion 44 Lower seal portion 45 Left seal portion 46・Right seal portion 5・・・・・・Vapor release portion 50・・・・Notch portion 51・・・・Water vapor A・・・・・・・・From the front plate to the side plate Distance to the breakable line B: Distance from the top to the base of the peeling seal L: Length (length of the microwave pouch storage box)
M・・・・・・・・Pouch length

Claims (3)

A paper box for storing a range pouch that can be heated and cooked in a microwave oven,
A paper box comprising: a top plate; a bottom plate of the same size facing the top plate; hand,
It has an easy-to-open cutting line that is continuously connected from the left side plate to the top plate and the right side plate,
The bottom plate has a bottom bending line continuously connected to the opening easy cutting line,
The easy-to-open cut line is set such that the distance from the front plate is 3 to 22% of the total length of the top plate with respect to the length of the pouch, and the steam vent of the pouch is positioned from the position of the easy-to-cut open line of the top plate. A pouch storage box for a microwave oven, characterized in that the front plate side of the pouch storage box. 2. The range pouch storage box according to claim 1, wherein the easy-to-open cutting line formed on the top panel is shaped so as to be away from the front panel at the center. 3. The range pouch storage box according to claim 1, wherein the bottom bending line formed on the bottom plate is formed by a breaking line.

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