JP2016124606A - Microwave oven cooking package, and method for heating the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package as a package allowing applying the package itself to a microwave oven to steam, preventing propagation of bacteria, preservable in a long period, free from being deteriorated due to contacting content, and enabling even steaming.SOLUTION: A microwave oven cooking package as a package to be steamed in a microwave oven is such that: a paper box (1) of a polygonal pillar shape, comprising an upper surface plate (11), a bottom plate (12) and a plurality of side plates (13) is included; there is stored in the inside, a humidification pouch (4) capable of discharging moisture vapor from an attached steam discharge part (41) when being heated to a certain degree or higher to raise an inner pressure; in each of the side plates of the paper box, two side plates and bottom plates adjacent to each other are connected without a gap; and a folding part (14) to be folded between the side plate and the adjacent side plate is included.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a range cooking package capable of steam cooking by high-frequency heating in a microwave oven while food is placed in a paper box, and a heating method thereof.

Foods such as Chinese buns and shumai can be purchased at stores and taken home in paper boxes. However, if the microwave oven is heated after taking it home, the water will evaporate and become papasa, and the plump taste that is characteristic of Chinese buns and Shumai will be lost.
There is a need for a method of cooking foods with low water content, such as Chinese buns and Shumai, in a microwave oven, rather than foods with high water content.

  If you put frozen shumai or meat buns in a microwave oven, the water inside will be evaporated and the skin will become hard, so you can put it in a simple plastic steamer and heat it. However, a separate simple steamer must be prepared.

On the other hand, Patent Document 1 proposes a steamed food set that is cooked in a microwave oven with water-containing paper cut to a required size.
However, water-containing paper is difficult to store for a long time. For example, if there is a lot of water, bacteria are likely to propagate. Since the water evaporates even if it is frozen, there is a possibility that it may not occur for long-term storage, the moisture content of the water-containing paper is reduced, and there may be a case where the moisture during cooking is insufficient. In addition, there is a problem that the surface may be melted when moisture partially contacts the food due to temperature change. Furthermore, in such cooking, a large amount of water vapor leaks from the gaps in the box, so that it cannot be uniformly steamed, and there is a risk that the cooking may be a mixture of hard and soft places.

JP-A-5-268885

  Therefore, it is a packaging body that can be steamed and cooked in a microwave oven as it is, and it can be stored for a long time without breeding bacteria, and it can be uniformly steamed without touching the contents. It is an object of the present invention to provide a packaging body capable of doing things.

The present invention is a package for steam cooking with a microwave oven,
It has a polygonal column shaped paper box consisting of a top plate, a bottom plate and a plurality of side plates,
When heated above a certain level, the internal pressure rises, and a humidifying pouch capable of discharging water vapor from the attached steam discharge part is stored inside,
Each of the side plates of the paper box has two folding side plates and a bottom plate that are connected to each other without a gap, and has a folded portion that is folded between the side plate and the adjacent side plate. Packaging.

The package for cooking the range of the present invention can be cooked by simply putting it in a microwave oven and heating it in a paper box, and even after long-term storage, the growth of bacteria is suppressed and uniform. Steaming cooking is possible.

It is an example of the range cooking packaging body of this invention, and is a perspective view which inserts the humidification pouch which discharges | emits water vapor | steam inside the square columnar paper box. In one example of the range cooking package of the present invention, steam cooking is performed using a square column shaped paper box with a water vapor discharging pouch inserted, and steamed in a microwave oven with the bottom plate side up. It is a perspective view which shows a mode that it makes cooking. It is an expanded view which shows an example of the paper box used for the packaging body for range cooking of this invention. It is sectional drawing of the accommodation state at the time of distribution | circulation in embodiment using the humidification pouch which provided the fine hole with the laser of the packaging body for microwave ovens of this invention, and the state just before heating with the bottom plate side up. It is an example of the pouch for humidification other than the laser processing used for the package body for range cooking of this invention. It is sectional drawing in the accommodation state at the time of the distribution | circulation in the humidification pouches other than the laser processing of the packaging body for range cooking of this invention, and the state just before heating the bottom plate side. It is sectional drawing in the state which heated the packaging body for range cooking of this invention with the microwave oven, and the humidification pouch has swelled, and the state in which water vapor | steam comes out from the humidification pouch and is cooking.

Hereinafter, the embodiment example of the packaging body for range cooking of this invention is demonstrated in detail using figures.
FIG. 1 is an example of a range cooking package according to the present invention, and is a perspective view in which a humidifying pouch capable of discharging water vapor is inserted into a rectangular column shaped paper box.
At the corners of the side plate 13 and the side plate 13 that are adjacent to each other in the square columnar paper box 1, there are folded portions 14 that are connected to the side plate ends and the bottom plate 12, and from the corner to the inner surface of the side plate. It is fixed. Of course, the folding part 14 may be fixed to the outside of the side plate 13.
The top plate 11 is connected to one of the four side plates 13 via a lid ruled line 111 so as to be rotatable.

The paper box 1 contains the contents 5 and then the humid pouch 4. The humidifying pouch 4 may be fixed to the inner surface of the side plate 13 with an adhesive tape or a hot melt adhesive.
The humidifying pouch 4 is formed by fusing the front and back films into a bag shape and sealing with water inside, and the internal pressure increased above a certain pressure on either the front or back or the bonded part. Sometimes steam holes open to generate water vapor.

In FIG. 2, the contents and the humidifying pouch are packaged, and the bottom plate side is turned upside down.
It is preferable to indicate on the outer surface of the paper box that the paper box 1 is turned upside down when the microwave oven is heated.

FIG. 3 is a development view of the paper box 1 used in the embodiment of the packaging body for cooking a range of the present invention.
A side plate 13 is developed in four directions around the bottom plate 12 via a bottom mountain crease line 101.
A triangular folding portion 14 is provided between the adjacent side plates 13 and the side plates 13 at positions adjacent to the bottom plate 12.
The folding part 14 has a folding valley crease line 142 in the center, and is connected to the side plate through a folding mountain crease ruled line 141.
That is, the folding part 14 is provided in a state of being connected to each side plate 13 and the bottom plate 12, and all the side plates 13 and the bottom plate 12 are connected, and there is no gap between them.
One end of the upper surface plate 11 is rotatably connected to one of the four side plates 13 via a lid ruled line 111.
Further, an insertion portion 112 is connected to the other end of the upper surface plate 11 via a mountain fold insertion ruled line 113.
For this reason, when the paper box 1 is assembled, a gap is generated only between the top plate 11 and the side plate 13.

The mount used for the paper box varies depending on the weight of the contents, but usually, oil-resistant paper or paper with a Herville coating varnish is used, and the basis weight, which is the thickness of the paper, is 270 g / m ² to 350 g / m. ² can be used. Further, the density of the paper is set in the range of 0.6 to 1.1 g / cm ³ .
Alternatively, a coated cardboard or cardboard having the above-mentioned basis weight and paper density may be used, and a mount on which the inner surface or both the inner surface and the outer surface are coated with polyethylene may be used.

FIG. 4 is a cross-sectional view of the packaging body for microwave oven cooking according to the present invention. FIG. 4A is a diagram illustrating the contents 5 to be cooked by steaming such as a meat bun and a pouch 4 for humidification. It is sectional drawing in a sales and distribution state.
The humidifying pouch 4 used here is a soft pouch on the front and back, and is a bag-shaped pouch sealed around, and is composed of a strong film that is not easily damaged even at high pressure and high temperature. Contains water.
The humidifying pouch 4 has a vapor discharge portion 41, and when the internal water is heated by the microwave oven to generate water vapor, and the internal pressure becomes larger than a certain level, the internal water vapor is released.

  The vapor release part 41 of the humidifying pouch is a fine hole that does not penetrate the base film of the film constituting the humidifying pouch and is opened using a laser beam. When the pressure reaches a certain level, It is the vapor | steam discharge | release part 41 which the weakest micropore opened and discharge | released water vapor | steam. The size and the number of holes for opening the fine holes are adjusted as appropriate according to the time required for humidifying the steamed contents, the amount of water in the humidifying pouch, and the like.

  If the size of the humidifying pouch 4 is too large, it swells and pushes up the bottom plate side of the paper box 1, and the gap between the side plate 13 and the top plate 11 becomes large. There is a risk of lowering. Therefore, even if the humidifying pouch 4 swells sufficiently, the size is set such that the bottom plate side of the paper box 1 is not pushed up. When it is desired to increase the amount of water, the width may be reduced to increase the length, or a seal portion may be provided at the center for division.

As shown in FIG. 4A, the paper box 1 has a structure in which a bottom plate 12 and a side plate 13 are connected to each other, a content 5 to be steamed and cooked inside, and a humidifying pouch 4 thereon. Is contained.
In order to put in the microwave oven, as shown in FIG. 4B, the paper box 1 is turned upside down so that the bottom plate 12 side is up and the top surface side 11 is down.
When the microwave oven is heated, the water 42 inside the humidifying pouch 4 becomes high temperature and generates water vapor, and the humidifying pouch 4 increases in capacity and expands.
When the microwave oven is further heated at a high frequency, the water 42 inside the humidifying pouch 4 boils and generates a large amount of water vapor 44.
The inside of the humidifying pouch 4 becomes a high pressure, the vapor discharge part 41 opens, and the water vapor 44 is released into the paper box 1.
The water vapor 44 released to the inside of the paper box 1 rises due to the high temperature and crawls up to the bottom plate 12 side, but the bottom plate 12 and the + side plate 13 are connected to each other, so that the content 5 is at a position. There is no escape for water vapor 44.
The low-temperature air that has been inside the paper box until then is released from the gap between the side plate 13 and the top plate 11.
Of course, since microwave heating is continuously performed by a microwave oven, water vapor released thereafter is also released from the gap between the side plate 13 and the top plate 11, and the inside of the paper box 1 is filled with high-temperature water vapor. Steamed cooking is performed.

FIG. 5 is an example of the humidifying pouch 4 used in the present invention other than the humidifying pouch 4 shown in FIG.
As another example of the vapor discharge part 41 of the pouch, there is a part in which the seal part as shown in FIG. 5A and FIG. 5C protrudes inward from the peripheral fusion part, and this is caused by the internal pressure. As shown in Fig. 5-2, there is a hole that peels off before the surroundings and opens, and the surrounding fusion part peels off first with internal pressure, as shown in Fig. 5-4, A film having a fusion strength lower than that of the outer peripheral seal portion 40 may be fused around the cut end.
However, there are no notches or holes in either the front film or the back film on the outside of the part protruding inward in FIGS. 5-1 and 5-3 and the hole part in FIG. 5-2. It is preferable that water vapor be ejected only on the front film side or only on the back film side.
5-1 and 5-3 are pouches made of a three-way seal, and since the lower side is bent, there is no seal portion. FIGS. 5-2 and 5-4 are four-way seals. This is an example of a pouch made of
Note that in the case of such a humidifying pouch 4, the steam discharge part 41 is connected to the inner wall of the steam discharge part 41 so that the water inside does not splash at once and the steaming time does not change. It is provided in the part and fixed with an adhesive tape or the like so that it is at a high position during high-frequency heating.

FIG. 6 is a cross-sectional view of the range cooking package of the present invention, and FIG. 6A is a diagram illustrating the contents 5 to be cooked in a paper box 1 such as a meat bun and the humidification as shown in FIG. 5-4. It is sectional drawing in the sales and distribution | circulation state which put the use pouch 4 in.
The vapor discharge part 41 is provided at the end, and is fixed with an adhesive tape 45 or the like so that it is at a high position during high-frequency heating.
Before heating, the vapor discharge part 41 is in a completely sealed state, so that the internal water can be stored for a long time.

FIG. 6-2 is inserted with the bottom plate 12 facing upward in a state where the microwave oven cooking package of the present invention is inserted into the microwave oven.
At this time, the seal portion 44 close to the vapor discharge portion 41 is fixed to the inner surface of the side plate 13 and can be held at a high position.

FIG. 7-1 shows a state in which the microwave oven packaging body of the present invention placed inside the microwave oven has been heated by high frequency heating.
The water inside the humidifying pouch 4 becomes high temperature, the humidifying pouch 4 is expanded, and the contents are pushed up.

FIG. 7-2 shows that the water inside the humidifying pouch 4 boils, the inside of the humidifying pouch 4 becomes high pressure, and the weak fusion part fused to the outside of the vapor discharge part 41 is peeled off. Water vapor 44 is released and steam cooking is performed.
Since the end in the vicinity of the vapor discharge portion 41 is fixed by the adhesive tape 45, the water inside the humidifying pouch 4 is not released as it is, but is efficiently discharged as water vapor.
As in FIG. 4B, the water vapor 44 released into the paper box 1 rises due to the high temperature and rises to the bottom plate 12 side, but the bottom plate 12 and the side plate 13 are connected. At the height where the contents 5 are, there is no escape for water vapor.
The low-temperature air that has been inside the paper box until then is released from the gap between the side plate 13 and the top plate 11.
Of course, since the microwave heating is continuously performed by the microwave oven, the water vapor released thereafter is also released from the gap between the side plate 13 and the top plate 11, and the inside of the paper box 1 is completely 100 ° C. or higher. Filled with hot steam and steamed cooking is performed.

  When steaming cooking is completed, the paper box 1 is turned over, the upper surface plate 11 side is turned up, the upper surface plate is opened, and the content 5 is taken out.

  In addition, you may fix with the tape which apply | coated the heat resistant adhesive between the side plates 13 so that the upper surface plate 11 may not open large during heating with a microwave oven. Alternatively, a slit may be provided at the base of the insertion portion 112, and a lock portion inserted into the slit may be provided at the upper portion of the corresponding side plate to physically fix it.

The humidifying pouch 4 used in the present invention can use a film having the same structure as a normal packaging bag.
For example, from the outer layer,
Polyethylene terephthalate / adhesive / polyethylene,
Polyethylene terephthalate / adhesive / polyethylene terephthalate / adhesive / polyethylene,
Polypropylene / adhesive / polyethylene,
And so on.
A film having the same configuration as that of a normal retort pouch can also be used.
Polyamide / adhesive / polyamide / polyethylene / vinyl acetate copolymer saponified product / adhesive / polyethylene,
Polyethylene / polyethylene terephthalate / silicon oxide-deposited polyethylene terephthalate / adhesive / polyethylene / polyamide / polyethylene,
Polypropylene / adhesive / polyamide / polyethylene,
Such a configuration is conceivable.
The thickness of the polyethylene terephthalate film is 8-25 μm.
These films can be produced by pasting together using an ordinary dry lamination machine, an extruder laminating machine or the like.

  The mount used for the paper box 1 is oil-resistant paper, paper with Herville coating varnish drawn, or coated cardboard or card paper, and the inner surface or both inner and outer surfaces coated with polyethylene etc. To do. Adjacent folds 14, or folds 14 and side plate 13 are fixed with a heat-resistant and water-resistant adhesive, or bonded by fusion of coated polyethylenes.

  Specific examples of the present invention will be described below.

<Example>
The paper box was made of oil-resistant paper and used a basis weight of 300 g / m ² and a density of 0.8 g / cm ³ , and a paper box was created according to the developed view of FIG.
The humidifying pouch was made of polyethylene terephthalate / adhesive / polyethylene, had a width of 60 mm and a length of 120 mm, and was sealed with 12 ml of water. The vapor discharge part 41 processed at least the polyethylene terephthalate layer with a laser over a length of 30 mm.
The contents were meat buns. Three meat buns were placed in a paper box, and the humid pouch 4 was placed on the top plate 11 side, the top plate 11 was closed, the top plate side was placed down, placed in a 600 W microwave oven, and heated for 3 minutes.

<Comparative Example 1>
The same paper box and humidifying pouch were used as in the examples.
The contents were meat buns. Three meat buns were put in a paper box, a humid pouch 4 was placed on the top plate 11 side, the top plate 11 was closed, and the top plate side was placed in a 600 W microwave oven and heated for 3 minutes.

<Comparative example 2>
The same paper box as in the example was used.
A humidifying pouch was not used.
The contents used were meat buns manufactured by Kibunsha. Three meat buns were put in a paper box, the humid pouch 4 was placed on the top plate 11 side, the top plate 11 was closed, the top plate side was down, and placed in a 600 W microwave oven and heated for 3 minutes.

<Evaluation test contents>
About the Example and the comparative example, it tested by the following method and compared and evaluated.
<Cookability>
The cooked meat bun was eaten and it was confirmed whether it was evenly steamed to the skin and inside.
Check 15 items in total for 5 adults, total 15 items that are not hard or melted, and are steamed to the inside. 15 items are good, ○ is 12 items and 14 items are good. Δ, 11 or less were marked as x.
<Convenience>
We asked five adults to heat one box at a time and evaluated whether it could be handled as it was.
The case where all five people judged that there was no handling problem was rated as ◯, the number of people who judged that there were no handling problems was 3 or more, and the number of those who judged that there were no handling problems was rated as x.
<Handability>
A cooking test was carried out in which 5 boxes each, 15 boxes in total, were heated in a microwave oven, and it was confirmed that the paper box maintained its shape and that the inner and outer surfaces were not significantly damaged.
The non-defective 5 non-defective boxes were rated as ◯, the non-defective 3 boxes up to 4 boxes as △, and the 2 boxes or less as x.
<Overall>
Judgment was made as to whether it could be used comprehensively based on the evaluation results of cooking, convenience, and handling.

<Evaluation results>
In the examples, the cooking property was ○, the convenience was ○, the handling property was ○, and the overall evaluation was ○.
In Comparative Example 1, three items with a hard cooking on the lower side were generated Δ, the convenience was ◯, the handling property was ◯, there was no leakage, and the overall evaluation was △.
In Comparative Example 2, the crust was hard and the cooking property was hard x, the convenience was ○, the handling property was ○, and the overall evaluation was ×.

As described above, the cooker for microwave oven cooking according to the present invention can be cooked uniformly by simply heating the microwave oven with the bottom plate side up while keeping the paper box.
Further, even after the microwave oven cooking package has been stored for a long time, the propagation of bacteria can be suppressed and uniform steaming can be performed.
Moreover, using a paper box with a wortite mount and side plates connected at the folded part, inserting a humidifying pouch, and heating the microwave oven with the top plate side down, uniform and good steaming Because you can cook, you can cook quickly and effortlessly when you want to eat.
In addition, since the hot humidification pouch and contents immediately after heating are contained in a paper box, there is a great merit that it can be taken out from a microwave oven without being burned.

1 ............ Paper box 101 ............ Sole mountain fold ruled line 11 ............ Top plate 111... · Insertion portion 113 ··· Mountain fold insertion ruled line 12 ··· Bottom plate 13 · · · Side plate 14 ··· Folding portion 141 · ··············································································· Humidification pouch 40 ... ... Sealing part 41 ... ... Vapor discharge part 42 ... Water 43 ... Bubble 44 ... Water vapor 45 ... Adhesive tape 5 ·········Contents

Claims (4)

A package for steam cooking with a microwave oven,
It has a polygonal column shaped paper box consisting of a top plate, a bottom plate and a plurality of side plates,
When heated above a certain level, the internal pressure rises, and a humidifying pouch capable of discharging water vapor from the attached steam vent is stored inside.
The side plate has a folded portion that is connected between the two side plates and the bottom plate that are adjacent to each other without a gap, and is folded between the side plate and the side plate that is adjacent to the side plate.   2. The microwave oven cooking package according to claim 1, wherein the polygonal column-shaped paper box has a rectangular parallelepiped shape including a rectangular top plate, a bottom plate, and four rectangular side plates.   The package for microwave oven cooking according to claim 1 or 2, wherein the steam outlet of the humidifying pouch is fixed so as to be away from the internal water level during heating.   A heating method for a microwave oven package, wherein a microwave oven package comprising a paper box containing food and a humidifying pouch is placed inside the microwave oven so that the bottom side of the paper box faces upward, and microwave heating is performed.

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