JP2007168832A - Package for microwave-heating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a package for microwave-heating that includes a package bag and an external box storing the package bag, the package being designed so as to make a user aware that, with the bottom face of the external box placed, the package is microwave-heated. <P>SOLUTION: The package for microwave heating includes: the package bag 2 in which contents are hermetically sealed and has a vapor vent 5 through which vapor produced by microwave-heating is allowed to escape; and the external box 3 storing the package bag 2. The external box 3 has the bottom face 31 on which the external box 3 supports itself, and upper face 32 opposite the bottom face 31 and formed in the shape of an arc or a corner top 35 formed from at least two or more inclined faces joined together. Faces of the external box 3, except the bottom face 31, are provided with opening formation means 6 for allowing vapor emitting from the vapor vent 5 of the package bag 2 to escape out of the external box. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a microwave heating packaging body in which a packaging bag in which food or the like is enclosed is housed in an outer box.

Conventionally, packaging bags (so-called pouches) in which contents such as retort food are sealed in a flexible film bag have been widely used. When eating food filled in such a packaging bag, the food was warmed by putting the packaging bag in hot water. However, in recent years, the packaging bag is put in a household microwave oven and microwaves are used. Food is heated.
However, when heated in a microwave oven, the internal pressure increases due to the steam generated from the inside of the packaging bag, and the bag may burst. Therefore, various packaging bags have been proposed that are provided with a steaming section that automatically releases steam generated in the packaging bag to lower the internal pressure.

Furthermore, there is also known a microwave oven package in which a packaging bag having a steaming portion that automatically opens during microwave processing as described above is housed in an outer box.
For example, Japanese Patent No. 3560862 discloses a microwave heating packaging bag having a flat bag shape and a relief portion on the upper surface, and a flat rectangular parallelepiped outer packaging box for housing the packaging bag. And a back-pasted portion having a weak seal portion or a fragile portion that is peeled open using internal pressure is provided as the relief pressure portion, and a cut for exposing the back-pasted portion to the outside on the upper surface of the exterior box. There is disclosed a microwave oven packaging body provided with a separating and opening portion.
As shown in FIG. 2 and FIG. 4 of the same publication, the microwave oven heated packaging body opens the exterior box by separating the cut open part from the exterior box, and exposes the back pasting part from the opening. In the state, it is used for microwave heating. And during microwave oven heating, when the internal pressure of a packaging bag rises, the weak seal part or weak part of a back sticking part peels automatically, and can escape a vapor | steam from the opening part.

By the way, the microwave heating package is suitable for heating the microwave oven with the bottom surface of the outer packaging box placed on the turntable of the microwave oven after opening the separation opening portion of the outer packaging box. In general, a description of the usage is described in an exterior box or the like.
However, in the microwave heating package described in the above-mentioned Japanese Patent No. 3560862, the outer packaging box is formed in a flat rectangular parallelepiped shape, so that the bottom surface and the top surface are formed in the same rectangular flat surface. Therefore, even if the exterior box is placed on the turntable with the upper surface down, there is no sense of incongruity in appearance.
For this reason, some users may not read the instructions sufficiently or misunderstand them and place them on the turntable with the upper surface of the outer packaging box facing down, and heat the microwave oven.
When the upper surface of the outer packaging box is placed on the turntable in this way, the steam in the packaging bag is not smoothly discharged to the outside of the outer packaging box, or the food in the packaging bag and the steam are on the turntable. There is a problem of spilling.
Therefore, the user is required to recognize that the bottom surface of the outer box is placed in the microwave oven and heated by the microwave oven using a method other than the instruction for use.

Japanese Patent No. 3560862

  Accordingly, the present invention recognizes to a user that a microwave oven heating package including a packaging bag and an exterior box in which the packaging bag is housed, places the bottom portion of the exterior box and heats the microwave oven. It is an object of the present invention to provide a package for heating a microwave oven.

  According to a first aspect of the present invention, there is provided a packaging bag in which the contents are sealed in a sealed manner and provided with a steaming section for releasing steam generated by microwave heating, and an outer box in which the packaging bag is stored. The outer packaging box has a bottom surface for allowing the outer packaging to stand on its own and a top surface formed opposite to the bottom surface and formed in a non-flat shape. There is provided a packaging for heating a microwave oven provided with an opening forming means for escaping steam emitted from the section to the outside of the outer box.

In such a microwave oven packaging body, an opening forming means is provided on a surface portion other than the bottom surface portion of the outer packaging box so that the steam emitted from the steaming portion of the packaging bag is released to the outside of the outer packaging box. By placing the bottom of the outer box down on the surface of the microwave oven (such as a turntable) and heating the microwave oven, the steam from the steaming part of the packaging bag Without being blocked by the mounting surface or without the contents being jetted onto the mounting surface, the content is smoothly discharged to the outside of the outer box through the opening forming means of the outer box.
Thus, when the microwave oven heating package is heated in a microwave oven, the correct usage is to place the bottom surface portion of the outer box on the placement surface.
In this respect, the microwave oven heating package of the present invention has a non-flat upper surface portion of the outer box that faces the bottom surface portion of the outer box. It can be recognized that it is placed on and self-supported.
Therefore, it can prevent that a user heats a microwave oven by the wrong usage method of mounting in a microwave oven with an upper surface part turned down.

  Furthermore, the second means of the present invention includes a packaging bag in which the contents are hermetically sealed and provided with a steaming section for releasing steam generated by microwave heating, an outer box in which the packaging bag is stored, The exterior box has a bottom surface portion for allowing the exterior box to stand on its own, and an upper surface portion formed in a shape facing the bottom surface portion and having an arcuate shape or a corner apex portion where at least two inclined surfaces are joined. And the packaging body for microwave ovens provided with the opening formation means which escapes the vapor | steam which comes out from the vapor transmission part of a packaging bag to the surface parts other than the bottom face part of an outer packaging box is provided.

Similarly, such a microwave heating package is placed on the microwave oven placing surface with the bottom of the outer box facing down, and the microwave is heated, so that the steam is smoothly transferred to the outside of the outer box. To be discharged.
In the microwave oven heating package, the upper surface portion of the outer packaging box facing the bottom surface portion of the outer packaging box is formed in an arc shape or a shape having a square apex portion where at least two inclined surfaces are joined. The user who sees the shape of the part recognizes that the self-supporting stability of the package is poor when it is placed with the upper surface part of the exterior box down. Thus, the user can recognize that the bottom surface portion is placed on the placement surface in the microwave oven, the outer box is made independent, and the microwave oven is heated.

  Further, the third means of the present invention is a packaging bag in which the contents are sealed in a sealed manner and provided with a steaming part for releasing steam generated by microwave heating, an outer box containing the packaging bag, The exterior box is formed in a frustum shape having a bottom surface portion that makes the exterior box self-supporting and a top surface portion that faces the bottom surface portion and has a smaller area than the bottom surface portion, and is a surface portion other than the bottom surface portion of the exterior box In addition, a microwave oven heating packaging body is provided in which an opening forming means for escaping the vapor from the steaming portion of the packaging bag to the outside of the outer packaging box is provided.

Similarly, such a microwave heating package is placed on the microwave oven placing surface with the bottom of the outer box facing down, and the microwave is heated, so that the steam is smoothly transferred to the outside of the outer box. To be discharged.
In the microwave oven packaging body, the outer box is formed in a frustum shape having a flat bottom surface and a top surface facing the bottom surface and having a smaller area than the bottom surface. The user who saw the shape recognizes that the self-supporting stability of the package is poor if it is placed with the upper surface portion of the exterior box down. Thus, the user can recognize that the bottom surface portion is placed on the placement surface in the microwave oven, the outer box is made independent, and the microwave oven is heated.

  Preferably, the microwave heating packaging body is provided, wherein the opening forming means includes a hole portion formed in a surface portion other than the bottom surface portion of the exterior box, and a covering member that covers the hole portion and is removable.

When the packaging body for heating a microwave oven according to the preferred embodiment removes the covering member and opens the hole, and then places the bottom of the outer packaging box in the microwave oven and heats it, the steaming part of the packaging bag The vapor | steam which came out of is smoothly discharged | emitted to the exterior of an exterior box through the hole formed in the exterior box.
Such a package can be heated in a microwave oven without exposing the steaming part of the packaging bag to the outside of the outer packaging box. It can prevent going out of the box.

The package for heating a microwave oven according to the present invention allows a user who has seen the shape of the upper surface portion of the outer box to be self-supported with the bottom surface portion of the outer box down and recognizes that the microwave oven is heated.
Therefore, when the microwave oven heating package of the present invention is heated in a microwave oven, the vapor emitted from the packaging bag is smoothly discharged to the outside, and the contents such as food spill on the surface to be placed in the microwave oven. Can be prevented.

(First embodiment)
1 and 2, reference numeral 1 denotes a packaging bag 2 in which contents such as food are sealed in a sealed manner and a steaming section 5 is provided, and an outer box in which the packaging bag 2 is stored. 3 shows a packaging body 1 for heating a microwave oven.
The exterior box 3 includes a bottom surface portion 31 that is a surface on which the exterior box 3 is self-supporting, and an upper surface portion 32 that is provided to face the bottom surface portion 31.
The bottom 31 of the outer packaging 3 can hold the outer packaging 3 containing the packaging bag 2 in a stable and independent state when placed on a placement surface (such as the bottom of a microwave oven or a turntable of a microwave oven). The upper surface portion 32 is formed in a non-flat shape.
Outer surfaces of the outer packaging box 3 other than the bottom surface portion 31 are provided with opening forming means for allowing the vapor emitted from the steaming section 5 of the package bag 2 stored to escape to the outside of the outer packaging box 3. .
Hereinafter, each component of the packaging body 1 for microwave oven heating is demonstrated concretely.

<Packaging bag 2>
As shown in FIG. 3A, the packaging bag 2 is provided in the bag body 4 having a housing portion formed therein by heat-sealing the peripheral end portion of the flexible film. And a steaming section 5 that automatically opens by heating in a microwave oven.
The bag body 4 is composed of, for example, three flexible film pieces constituting a front surface portion 41, a back surface portion 42, and a bottom surface gusset portion 43, and the bottom surface gusset portion 43 is folded between the front and back surface portions 41, 42 below. By interposing and heat-sealing the inner surfaces of the peripheral end portions of the front and back surface portions 41 and 42 and the peripheral end portion of the bottom surface gusset portion 43, a self-supporting sealing bag shape is formed (so-called standing pouch).

The front shape (front and back surface portions 41, 42) of the bag body 4 is formed in a substantially trapezoidal shape that becomes narrower toward the top from the standpoint of self-supporting stability.
The bag body 4 is composed of three film pieces. For example, the front and back surface portions 41 and 42 and the bottom surface gusset portion 43 may be composed of one film piece. You may be comprised with the film piece.
Further, the bag body 4 is not limited to the one constituted by the front and back surface portions 41 and 42 and the bottom surface gusset portion 43, and a conventionally known one can be appropriately selected and used. As other forms of bag body 4, although not particularly illustrated, for example, a self-supporting bag composed of front and back surface portions and both side gusset portions (or side gusset portions only on one side), front and back surface portions, both side gusset portions (or And a self-supporting bag composed of a side gusset portion only on one side) and a bottom portion.
Further, in the self-supporting packaging bag 2, as shown in FIG. 3 (b), the film constituting the surface portion (for example, the surface portion 41) of the bag body 4 is divided in the width direction, and the divided upper and lower parts are separated. You may provide the back sticking part 8 which extended the film part outside and overlap | superposed and heat-sealed this extended film part in the shape of a palm. The back pasting portion 8 is a small bag-like portion that protrudes outward from the surface portion of the bag body 4, and a portion of the back pasting portion 8 is weakly bonded (for example, weakly heat-sealed, or an easy peel film (or A steaming section 5 that opens automatically is provided by interposing a coating).

The film constituting the front and back surface portions 41 and 42 and the bottom surface gusset portion 43 is not particularly limited as long as it has heat resistance that can withstand microwave heating and the inner surface can be heat sealed, and has heat resistance, for example. A laminated film in which an outer layer film is laminated with a heat-sealing inner film can be used, and a laminated film having gas barrier properties and / or light shielding properties is preferably used.
As the outer layer film, for example, a polyester film such as polyethylene terephthalate, a single layer film such as a polyamide film such as polypropylene and nylon, and a laminate of two or more kinds can be used. In that case, it is preferable to use a stretched film. The thickness of the outer layer film is, for example, about 10 to 70 μm.
As the inner layer film, for example, polyethylene such as high density polyethylene and linear low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer and the like can be used. The thickness of the inner layer film is, for example, about 20 to 100 μm.
The inner surface (or outer surface) of the outer layer film is subjected to design printing such as a pattern, a trademark, and an explanatory note as necessary.

Furthermore, a steaming section 5 is provided at the upper end of the bag body 4.
Specifically, the upper end seal portion of the bag body 4 formed by heat-sealing the inner surface of the upper end portion of the front surface portion 41 and the inner surface of the upper end portion of the back surface portion 42 is a part (for example, a substantially central portion in the width direction). It is weaker than the part and heat sealed. The weak heat seal is sealed with an adhesive strength such that the weak seal portion is peeled off due to an increase in internal pressure in the bag body 4 when the microwave oven is heated, or the weak seal portion is melted due to the heat generated when the microwave oven is heated. The weakly sealed portion can be formed, for example, by adjusting the sealing temperature and pressure, or by heat sealing with a thin piece or coating layer that weakens the sealing strength. This weakly heat-sealed portion corresponds to the steaming section 5 that automatically opens during microwave heating.
2 (b) and 3, for the sake of convenience, the weakly heat-sealed portion (the vapor passage portion 5) is lightly painted, and the peripheral end portion that is strongly heat-sealed so as not to delaminate when heated in a microwave oven is meshed. It is shown as a hung.

  The contents stored in the packaging bag 2 are those that generate steam when heated, for example, various foods such as curry, stew, soup, miso soup, rice cake, oden, chocolate, risotto, rice cooked food, side dish, etc. Etc.

<Exterior box 3>
The exterior box 3 has a storage space in which the packaging bag 2 can be stored. The storage space is preferably formed larger than the volume of the packaging bag 2 in which the contents are sealed and expanded. For example, when the packaging bag 2 in which the contents are sealed is stored in the outer box 3, the inner surface of the outer box 3 and the front and rear surfaces of the bag body 4 are prevented so that the front and back surface portions 41 and 42 do not adhere to the inner surface of the outer box 3. A gap is secured between the surface portions 41 and 42. Thus, by providing a space | gap in the exterior box 3, the expansion | swelling space of the packaging bag 2 at the time of microwave oven heating can be ensured. The storage space is preferably formed to be larger than the volume of the packaging bag 2 from the viewpoint of securing an expansion space. However, if the storage space is too large, the packaging bag 2 is excessively expanded and the steaming section 5 is expanded. There is a risk of stress being applied. Considering these, the size of the outer packaging box 3 is formed to such an extent that excessive expansion of the packaging bag 2 can be suppressed.

The exterior box 3 includes a bottom surface portion 31 that makes the exterior box 3 self-supporting, a top surface portion 32 that is provided to face the bottom surface portion 31, and both sides that are disposed at an opening portion formed between the bottom surface portion 31 and the top surface portion 32. Surface portions 33, 33.
The bottom surface portion 31 of the outer box 3 is formed in a rectangular shape in plan view, and the outer surface of the bottom surface portion 31 is placed on the mounting surface (the bottom surface of the microwave oven or the turntable of the microwave oven) when the packaging bag 2 is placed. Is formed in a flat shape so as to be able to hold the outer box 3 in which it is stored in a self-supporting state.
The upper surface portion 32 of the exterior box 3 is composed of two inclined surfaces 34 and 34 joined, and has a straight square apex portion 35 bent at the joint portion of the inclined surface 34, and has a triangular roof shape as a whole ( (Non-flat). The lower end sides of the pair of inclined surfaces 34, 34 are joined to one side and the other side of the bottom surface portion 31, and the upper end sides of the pair of inclined surfaces 34, 34 are joined to each other to form the angular top portion 35. ing.
The side surface 33 of the outer box 3 is formed in a triangular shape in front view, the lower end side thereof is joined to the side of the bottom surface 31, and both oblique sides of the side surface 33 are formed on the sides of the pair of inclined surfaces 34 and 34. It is joined.

The outer box 3 is composed of an assembly box in which a rigid sheet such as paper such as cardboard or a synthetic resin sheet is formed in a predetermined shape and is assembled. For example, when the exterior box 3 is formed of thick paper, a thickness of about 0.5 to 1.5 mm can be used.
FIG. 4 shows a spread sheet 3 a constituting the outer box 3. In the unfolding sheet 3a, a bottom surface portion forming region 31a, an inclined surface forming region 34a, and a side surface portion forming region 33a are joined via a crease 37a. In the unfolding sheet 3a, a pair of a bottom surface portion forming region 31a and a side surface forming region 33a having the same shape is provided. When the unfolding sheet 3a is assembled, the two regions are overlapped to form the outer box 3 The bottom surface portion 31 and the side surface portion 33 are configured. In addition, 38a shows an insertion piece, 39a shows the cut | interruption for inserting the insertion piece 38a. A flap piece extends in one bottom surface portion formation region 31a.

<Opening means>
An opening forming means is provided on a surface portion other than the bottom surface portion 31 of the outer box 3.
As shown in FIGS. 1 and 2, the opening forming means includes a hole 6 formed in a surface portion other than the bottom surface portion 31 of the exterior box 3, a covering member 7 that covers the hole 6 and is removable. Consists of.
Specifically, a hole 6 is formed in the upper center portion of the upper surface portion 32 of the exterior box 3. This hole 6 is for discharging the vapor | steam emitted from the steaming part 5 of the packaging bag 2 to the exterior of the exterior box 3. As shown in FIG. The hole 6 is formed in the upper central portion of the both inclined surfaces 34, 34 across the corner apex 35 of the upper surface portion 32 of the exterior box 3. Note that the hole 6 may be formed only in the upper central portion of the one inclined surface 34.
The size of the hole 6 is formed such that the vapor passing part 5 is not exposed (or protrudes) to the outside of the outer box 3 through the hole 6.
The front shape of the hole 6 is not particularly limited, and can be formed in an appropriate shape such as a substantially circular shape, a substantially square shape, or a substantially triangular shape. For example, in the case of a substantially circular hole 6, the opening area of one hole 6 is formed with a diameter of about 1 to 10 mm, preferably about 5 mm to 10 mm. The number of holes 6 is not particularly limited, and may be one, but a plurality of holes 6 are preferably formed, and a plurality of holes 6 are preferably formed densely in a predetermined range as illustrated.

  An adhesive label 7 is attached to the outer surface of the exterior box 3 as a covering member so as to cover the holes 6 (all holes 6 when a plurality of holes 6 are formed). The pressure-sensitive adhesive label 7 is a so-called tack label in which a pressure-sensitive adhesive or the like is coated on the back surface of a known base material such as paper, a synthetic resin film, or synthetic paper. The pressure-sensitive adhesive can be peeled by hand. It is a label having strength.

<Other components of exterior box 3>
In the outer box 3, a dividing auxiliary line 36 for dividing a part of the outer box 3 is formed in order to form an outlet for taking out the packaging bag 2 after being heated in the microwave oven. Examples of the dividing auxiliary line 36 include perforations, half-cut lines, tear tape, and the like. The dividing auxiliary line 36 is formed in the circumferential direction of the outer box 3 in the middle of the outer box 3, for example. . When using a perforation or a half-cut line, for example, as shown in FIG. It is preferable to provide it. But the exterior box 3 which does not form such a parting auxiliary line 36 or a knob | pick part can also be used.
In addition, the exterior box 3 is provided with a predetermined design printing such as a description regarding how to use the package 1, a product name, a trademark, a design, a photograph, and the like.

And the hole 6 of the outer packaging box 3 is positioned so as to correspond to the steaming section 5 of the packaging bag 2, and the packaging bag 2 is stored in the outer packaging box 3 in a self-supporting state. By storing the packaging bag 2 in the outer box 3 in this manner, the vapor that is emitted from the vapor passage section 5 during microwave heating is discharged to the outside of the outer box 3 through the hole 6.
In addition, the position where the hole 6 corresponds to the steaming part 5 includes a state in which the hole 6 and the steaming part 5 (scheduled opening part where steam is generated) correspond in a pinpoint manner. 6 is a meaning including the state located in the vicinity of the vapor passage part 5. FIG.

<Usage example>
Next, the usage example of the said microwave oven packaging 1 is demonstrated.
First, after peeling off the label 7 attached to the outer box 3 and opening the hole 6, the bottom part 31 of the outer box 3 is placed on the surface to be placed in the microwave oven, The packaging body 1 is made independent. Next, by irradiating the microwave, the contents are heated, and when the internal pressure of the bag body 4 rises or the temperature of the bag body 4 rises, the vapor passage section 5 is automatically opened, and the steam is discharged therefrom. Is done. Thereby, the internal pressure of the packaging bag 2 falls and it can prevent that the packaging bag 2 bursts. Vapor emitted from the vapor passage section 5 is discharged to the outside of the outer box 3 through the hole 6. And after performing microwave oven heating for a predetermined time, the packaging body 1 is taken out from a microwave oven, and the packaging bag heated by opening the taking-out opening of the exterior box 3 using the parting auxiliary line 36 of the exterior box 3 is carried out. 2 can be taken out.

In the microwave oven packaging 1 according to the present invention, the bottom surface portion 31 of the outer box 3 is formed in a flat shape, and the upper surface portion 32 of the outer box 3 is formed in a triangular roof shape. The user who sees the shape of the outer packaging box 3 clearly recognizes that the packaging body 1 is inclined and the self-supporting stability is poor when the packaging box 1 is placed with the upper surface portion 32 of the outer packaging box down. Therefore, according to the microwave oven heating package 1 of the present invention, the user is made to recognize the correct usage method of placing the bottom surface portion 31 on the placement surface in the microwave oven and heating the microwave oven. Can do.
In this way, by placing the bottom surface portion 31 to surely perform microwave heating, when the microwave heating packaging 1 is heated in a microwave, the steam emitted from the packaging bag 2 is smoothly discharged, Content such as food can be prevented from spilling on the surface of the microwave oven.

Further, since the opening forming means includes the hole 6 formed in the upper surface portion 32 of the outer box 3 and the label 7 which covers the hole 6 and can be removed, the label 7 is peeled to open the hole 6. If it does so, it can heat, without exposing the steaming part 5 of the packaging bag 2 to the exterior of the exterior box 3. FIG. Therefore, it is possible to prevent food or the like that spills from the steaming part 5 of the packaging bag 2 from adhering to the outer surface of the outer packaging 3 or polluting the inside of the microwave oven.
Thus, since the packaging body 1 can be heated in a microwave oven with the packaging bag 2 in the outer packaging box 3, the packaging bag 2 is accidentally dropped from the outer packaging box 3 when the packaging body 1 is put in and out of the microwave oven. There is no fear.
In addition, since the said package 1 can be microwave-heated only by performing the operation | work which peels off the label 7, there also exists an advantage that a preparatory operation | work before a heating can be reduced.

<Modification of First Embodiment>
In the present embodiment, the upper surface portion 32 of the exterior box 3 is formed in a triangular roof shape having a corner apex portion 35, but as shown in FIG. 5A, the upper surface portion 32 is formed in an arc shape. May be. Further, in the present embodiment, the upper surface portion 32 is composed of two inclined surfaces 34 and 34 joined at a linear square apex portion 35. For example, as shown in FIG. The upper surface portion 32 may be composed of four inclined surfaces 34 and may be formed to have a dot-like square apex portion 35.

(Second Embodiment)
2nd Embodiment is related with the packaging body for microwave ovens in which the exterior box was formed in frustum shape. Hereinafter, parts different from those of the above-described embodiment will be mainly described, and for the same configuration, terms and figure numbers are used in the specification and drawings, and the description thereof may be omitted (this point, the third below). The same applies to the seventh embodiment).

As shown in FIGS. 6 and 7, the exterior box 3 of the present embodiment is formed in a truncated cone shape as a whole.
Specifically, the exterior box 3 is provided between a flat bottom surface portion 31 that makes the exterior box 3 self-supporting, a top surface portion 32 that faces the bottom surface portion 31, and the bottom surface portion 31 and the top surface portion 32, and A cylindrical side surface portion 33 having a diameter that decreases upward, and the upper surface portion 32 is smaller than the bottom surface portion 31 and is formed in a flat shape parallel to the bottom surface portion 31.
The upper surface portion 32 is provided with a hole 6 as an opening forming means and a label 7 for closing the hole 6. The opening forming means can also be provided on the side surface portion 33.
By storing the self-supporting packaging bag 2 in the outer box 3, the packaging body 1 for heating a microwave oven is configured.

  Similarly, in the microwave heating packaging 1 according to the present embodiment, the label 7 attached to the outer box 3 is peeled off to open the hole 6, and then the bottom surface 31 of the outer box 3 is placed downward. The package 1 is made independent by being placed on the placement surface in the range. By irradiating with microwaves in this state, the steam can be smoothly discharged to the outside of the outer box 3 and microwave heating can be performed.

  In the microwave oven packaging body 1 according to this embodiment, the entire outer box 3 is formed in a truncated cone shape. A user who sees the shape of the outer packaging box 3 clearly recognizes that the self-supporting stability of the package 1 is poor when placed with the upper surface portion 32 of the outer packaging box down. Therefore, the microwave oven packaging body 1 of the present embodiment also recognizes the correct usage method for the user to place the bottom surface portion 31 on the surface to be placed in the microwave oven, and to heat the microwave oven. Can be made.

<Modification of Second Embodiment>
In the present embodiment, the exterior box 3 is formed in a truncated cone shape as a whole. However, for example, as shown in FIG. 8, the exterior box 3 may be formed in a quadrangular pyramid shape. Although not shown, the bottom surface portion 31 and the top surface portion 32 may be formed in a pentagonal truncated pyramid shape formed in a planar pentagonal shape. As long as the top surface portion 32 is formed in a truncated cone shape having a smaller area than the bottom surface portion 31, the exterior box 3 can have an appropriate plan shape for the bottom surface portion 31 and the top surface portion 32.

(Third embodiment)
3rd Embodiment is related with the packaging body for microwave oven heating using the exterior box suitable for accommodating a flat packaging bag.
For example, as shown in FIG. 9, the packaging bag 2 of the present embodiment has a bag body 4 that is substantially flat by heat-sealing the peripheral ends of the two film pieces constituting the front and back surface portions 41 and 42. Is formed. Since the bag body 4 formed in such a substantially flat shape is housed in the exterior box 3 with the back surface part 42 facing down, the steaming part 5 is provided on the front surface part 41.
The steaming part 5 is formed in a back pasting part 8 extending in the width direction of the surface part 41.
The back pasting portion 8 is the same as that shown in FIG. In the following, a brief description will be given. As shown in FIG. 9 (b), the back pasting portion 8 divides the film constituting the surface portion 41 of the bag body 4 in the width direction and is divided into upper and lower portions separated by a dividing line. The film portions 81 and 81 are extended to the outside, the extended film portions 81 and 81 are overlapped in the form of a palm, and the outer periphery of the overlapped extended film portions 81 and 81 is heat-sealed. Has been. Therefore, the back pasting portion 8 is a small bag-like portion protruding outward from the surface portion of the bag body 4, and an adhesive portion in which the inner surfaces of the upper and lower extension film portions 81 are heat-sealed, and the inner surface is heat-sealed. A non-adhesive portion 83 that is not provided, and the non-adhesive portion 83 communicates with the storage portion of the bag body 4.
The vapor passing portion 5 is provided in the back pasting portion 8 by weakly bonding (for example, weakly heat-sealing) a part of the bonding portion of the back pasting portion 8. In addition, the vapor transmission part 5 can also be provided by apply | coating the electroconductive material which heat | fever-generates with a microwave to the outer surface of the non-bonding part 83 of the back sticking part 8, or sticking the vapor | steaming label similarly generated.

As shown in FIG. 10, the exterior box 3 of the present embodiment includes a flat bottom surface portion 31 that allows the exterior box 3 to stand on its own, an arc-shaped top surface portion 32 that swells upward, a bottom surface portion 31, and a top surface portion 32. And both side surface portions 33 provided in the opening portion between the two.
A hole 6 and a label 7 for closing the hole 6 are provided on the upper surface 32 of the outer box 3.
FIG. 11 shows an unfolding sheet 3 a constituting the outer box 3. In the unfolding sheet 3a, a bottom surface portion formation region 31a, a top surface portion formation region 32a, and a side surface portion formation region 33a are joined via a crease 37a. An insertion piece 38a is formed in the upper surface portion formation region 32a, and a cut 39a for inserting the insertion piece 38a is formed in a fold portion of the bottom surface formation region 31a. Further, flap pieces are formed on both sides of the side surface portion forming region 33a and on one side of the bottom surface portion forming region 31a.

  The packaging bag 1 for heating a microwave oven according to this embodiment is configured by housing the packaging bag 2 in the outer box 2 with the back pasting portion 8 facing upward.

  Similarly, in the microwave heating packaging 1 according to the present embodiment, the label 7 attached to the outer box 3 is peeled off to open the hole 6, and then the bottom surface 31 of the outer box 3 is placed downward. The package 1 is made independent by being placed on the placement surface in the range. By irradiating with microwaves in this state, the steam can be smoothly discharged to the outside of the outer box 3 and microwave heating can be performed.

  In the microwave oven heating packaging body 1 according to the present embodiment, the upper surface portion 32 of the outer box 3 is formed in an arc shape. Therefore, according to the shape of the microwave heating packaging 1, the user can use the correct usage of heating the microwave oven by placing the bottom surface portion 31 on the surface to be placed in the microwave oven and allowing it to stand on its own. Can be recognized.

  Moreover, in this embodiment, although the packaging bag 2 which has the back sticking part 8 is used, this back sticking part 8 bulges largely upwards at the time of microwave oven heating. In this respect, since the upper surface portion 32 of the outer packaging box 3 is formed in an arc shape that swells upward, a relatively large gap is formed on the upper side of the packaging bag 2. Therefore, it is possible to sufficiently secure the rising space of the back pasting portion 8 when heating the microwave oven.

<Modification of Third Embodiment>
In the present embodiment, the upper surface portion 32 of the outer box 3 is formed in an arc shape. For example, as shown in FIG. 12A, the upper surface portion 32 of the outer box 3 is formed as in the first embodiment. Although it may be formed in a triangular roof shape, and not particularly illustrated, the upper surface portion 32 may be formed in a shape in which a plurality of arc-shaped surfaces are connected. Moreover, the exterior box 3 may be formed in frustum shapes, such as square frustum shape similarly to 2nd Embodiment.
Furthermore, the upper surface part 32 of the exterior box 3 may be formed to be expandable to the outside (for example, the upper side). In the case of the outer packaging box 3 having the expandable upper surface portion 32 in this way, the upper surface portion 32 swells due to the steam emitted from the packaging bag 2. As a result, the gap between the upper surface portion 32 and the side surface portion 33 of the outer box 3 is increased, and the vapor can be released to the outside of the outer box 3 without forming the hole 6 in the outer box 3.
As the exterior box 3 having such an expandable upper surface portion 32, as shown in FIG. 12B, a bellows obtained by folding the upper surface sheet into a bowl shape on both sides (or one side) of the upper surface portion 32. The provision of the portion 325 is exemplified.

(Fourth embodiment)
4th Embodiment is related with the packaging body for microwave ovens with which the opening formation means is comprised from the hole part and the sheet piece which comprises an exterior box.
As shown in FIG. 13, at least the surface portion in which the hole 6 is formed among the surface portions constituting the exterior box 3 includes a sheet piece 321 in which the hole 6 is formed and a sheet piece 322 covering the same. Yes.
Specifically, for example, when the hole 6 is formed in the upper surface portion 32 of the outer box 3, the upper surface portion 32 of the outer box 3 in which a rigid sheet is assembled has two sheet pieces 321. , 322 are stacked one above the other.

Among these, the lower sheet piece 321 is integrally extended from one side surface portion 33 of the outer box 3, and the other side of the outer box 3 is interposed through a fold so as to close the upper surface opening of the outer box 3. While being bent to the side surface portion 33, the leading end portion 321 a of the lower sheet piece 321 is bonded to the other side surface portion 33.
A hole 6 is formed in the lower sheet piece 321. The hole 6 (including a plurality of formations) is provided, for example, at a substantially central portion of the lower sheet piece 321.
On the other hand, the upper sheet piece 322 is integrally extended from the other side surface portion 33 of the exterior box 3 and is folded on the lower sheet piece 321 through a fold so as to cover at least the hole 6. Are superimposed. The upper sheet piece 322 is bonded to the lower sheet piece 321 in a region other than the region where the hole 6 is formed (for example, the front end portion 322a of the upper sheet piece 322. FIG. In this figure, the bonded portion is shaded).
The upper sheet piece 322 is formed with a dividing auxiliary line 323 for dividing the upper sheet piece 322. Examples of the dividing auxiliary line 323 include a perforation line, a half cut line, and a tear tape. It is preferable to form two of the dividing auxiliary lines 323, and in particular, by cutting along the two dividing auxiliary lines 323, the hole 6 of the lower sheet piece 321 is formed to be opened. It is preferable.

  When the package 1 according to the present embodiment is heated in a microwave oven, a part of the upper sheet piece 322 is cut off by using the dividing auxiliary line 323 or the upper sheet piece 322 is peeled off so that the hole 6 is formed. Opened. After that, it is subjected to microwave heating as described above.

(Fifth embodiment)
This embodiment is related with the microwave oven packaging body by which a hole is formed in an exterior box by removing a covering member.
As shown in FIG. 14, a cut line 61 for forming a hole is formed in a surface portion other than the bottom surface portion 31 of the outer box 3, and a covering member is provided so as to cover the cut line 61.

As the hole forming cut line 61, for example, as shown in FIG. 5A, two substantially semicircular arc-shaped cut lines 63 are formed to face each other, and the two cut lines 63 An embodiment in which an uncut portion 64 is formed between both end portions, as shown in FIG. 5 (b), a perforation 65 (in which an elongated cut portion 65a is intermittently connected) is cut into an endless shape (for example, an arc shape). Examples are provided.
And the adhesive label 7 as shown in 1st Embodiment, for example as a coating | coated member is stuck on the outer surface of the exterior box 3 so that peeling is possible so that the cut line 61 for hole formation may be covered.

When the packaging body 1 according to the present embodiment is heated in a microwave oven, the adhesive label 7 is peeled off, whereby the region 62 surrounded by the cut line 61 is removed together with the label 7 while adhering to the label 7, and as a result. The hole 6 is formed in the outer box 3. After that, it is subjected to microwave heating as described above.
When the hole 6 is previously drilled in the outer box 3 as described above, the punched hole 6 is generated during the manufacturing of the outer box 3. In this regard, according to the configuration in which the hole forming cut line 61 is formed as in the present embodiment, there is an advantage that the punching of the hole 6 does not occur when the exterior box 3 is manufactured.

In this embodiment, the adhesive label 7 is used as the covering member. For example, as shown in the fourth embodiment, a sheet piece constituting the surface portion of the exterior box 3 is replaced with the covering member. Can also be used.
In this case, for example, as shown in FIG. 15, a hole forming slit 61 is formed in the lower sheet piece 321 constituting the surface portion 32 of the exterior box 3, and the upper sheet piece 322 is overlaid thereon. At the same time, the region 62 surrounded by the hole forming cut line 61 and the back surface of the upper sheet piece 322 are bonded.
When the upper sheet piece 322 is peeled off by adhering the upper sheet piece 322 to the area 62 surrounded by the hole forming cut line 61 in the lower sheet piece 321, the area together with this is removed. 62 is cut off, and a hole 6 is formed in the exterior box 3.

(Sixth embodiment)
This embodiment relates to a microwave oven heating package that can be used for microwave heating without removing a covering member.
As shown in FIG. 16, in this embodiment, a heat-shrinkable film 7 (corresponding to a covering member) is provided on at least one of the outer surface and the inner surface of the outer box 3 so as to cover the hole 6 formed in the outer box 3. Is provided).

  As the heat-shrinkable film 7, for example, as shown in FIG. 16 (a), a base film 71 having heat-shrinkability in a uniaxial direction or biaxial direction (for example, uniaxially or biaxially stretched polyethylene) Examples include those in which an inner surface of a terephthalate film or the like) is coated with an adhesive 72 (preferably an adhesive whose adhesiveness is reduced by receiving steam) for adhering to the outer box 3. The heat-shrinkable film 7 is such that when the heat-shrinkable base film 71 is thermally shrunk during microwave heating, the film 71 is curved upward or in a plane direction as shown by a two-dot chain line in FIG. It shrinks and is automatically peeled off from the outer surface of the outer box 3, thereby opening the hole 6.

The package 1 according to the present embodiment includes an exterior box 3 in which the hole 6 is closed with a heat-shrinkable film 7. When the package 1 is heated in a microwave oven, it does not peel off the covering member as in the above-described embodiments, but the package body 1 is heated by the steam heat discharged from the steaming portion 5 of the packaging bag 2 during the microwave oven heating. The film 7 heat shrinks. The heat-shrinked film 7 is partially peeled off from the outer box 3, thereby opening the hole 6, and the vapor emitted from the packaging bag 2 is discharged to the outside of the outer box 3 through the hole 6. .
Since the package 1 using the heat-shrinkable film 7 for covering the hole 6 can be heated as it is, it is not preferable to perform preparatory work before heating, which is a preferable mode.

  In addition, as another example of the heat-shrinkable film 7, for example, as shown in FIG. 16B, a breathable air-permeable base material 73 (for example, a nonwoven fabric) is provided on the inner surface of the heat-shrinkable base film 71. A laminate having a peelable adhesive strength and a pressure-sensitive adhesive 72 applied to the inner surface of the ventilation base 73 is exemplified. When the heat-shrinkable film 7 is heated in a microwave oven, the heat-shrinkable base film 71 is thermally shrunk as shown by a two-dot chain line in FIG. A part or all of the base material 73 is exposed. Thereby, the upper surface of the ventilation base 73 covering the hole 6 is opened, and the steam discharged from the hole 6 is discharged outside the outer box 3 through the ventilation base 73.

  Furthermore, as another example of the heat-shrinkable film 7, countless fine holes (for example, a diameter of about 1 mm or less) may be formed in the heat-shrinkable base film 71. The heat-shrinkable film 7 is similarly attached to the outer packaging box 3 so as to cover the hole 6 via an adhesive or the like, and the heat-shrinkable base film 71 is thermally shrunk when heated by a microwave oven. The fine holes drilled in advance are expanded, and a relatively large expanded hole is formed in the base film 71. Thus, if the film 7 including the heat-shrinkable base film 71 with fine holes formed is used, even if the film 7 is not peeled off from the exterior box 3, through the expansion holes formed in the base film 71, Steam is discharged outside the outer box 3.

  Further, the outer box 3 may be covered with a film that can be melted by heat so as to cover the hole 6, and a vapor transmission label including a conductive material may be attached to the heat-meltable film that covers the hole 6. Good. As the vapor label provided with the conductive material, for example, a vapor label described in JP-A-2005-224181 can be used. Such a steaming label is provided with a label base material having a conductor layer in which a slit portion is formed, and is configured to be attached to an adherend via an adhesive or the like. Etc. generate heat and melt a part of the film. The microwave heating packaging 1 in which the hole 6 is covered with a heat-meltable film and a vapor transmission label is attached is directly subjected to microwave heating, and the heat-fusible label is formed by the vapor transmission label during microwave irradiation. The film melts and the hole 6 is opened.

(Seventh embodiment)
This embodiment shows modifications, such as a steaming part of a packaging bag.
In each said embodiment, although the vapor passage part 5 is formed by heat-sealing a part of the heat seal part of the film piece which comprises the packaging bag 2 weakly, the vapor circulation part 5 is packaged at the time of microwave oven heating. Conventionally known means can be adopted as long as it can automatically open a part of the bag 2 to escape the vapor.
For example, an easy peel film (or coating) may be interposed in a part of the heat seal portion of the film piece constituting the bag body 4. The interposition part such as the easy peel film becomes the steaming part 5, and the interposition part such as the easy peel film peels off due to the increase in the internal pressure at the time of heating the microwave oven in the packaging bag 2 provided with the bag body 4. A part of the packaging bag 2 is automatically opened.

  As another example, for example, a material using a conductive material containing a conductive material such as a metal, an alloy, or a metal oxide such as aluminum, nickel, or chromium in a part of a film constituting the bag body 4 is used. It can also be used.

  Furthermore, as another example, a vapor passing label including a conductive material may be attached to the outer surface of the film piece of the bag body 4. As the vapor label provided with the conductive material, for example, the vapor label described in JP-A-2005-224381 can be used. Such a steaming label generates heat by microwave irradiation and melts a part of the film, and the pasting part of the steaming label becomes the steaming part 5.

  Moreover, in each said embodiment, although the hole part 6 (or hole formation cutting line 61) and the coating | coated member 7 which covers this were illustrated as an opening formation means provided in the exterior box 3, an opening formation means is this. For example, as shown in FIG. 17, in order to cut out a part of the outer box 3 to form an opening, an opening cut line 9 may be provided on the upper surface part 32 (or the side part 33) of the outer box 3. Good. By opening a portion 91 surrounded by the cut line 9 along the opening cut line 9 during heating in the microwave oven, an opening 92 for releasing vapor can be formed in the outer box 3 as shown in FIG. Examples of the opening cut line 9 include perforations and half cut lines.

  Furthermore, although the exterior box 3 used for the packaging body 1 of each said embodiment illustrated what the bottom face part 31 was formed in flat shape, the bottom face part 31 of the exterior box 3 is a turntable of a microwave oven. It is not limited to a flat shape as long as it is formed so as to be able to stand on a mounting surface such as the top. For example, as shown in FIG. 18, the exterior box 3 having a bottom surface portion 31 formed with a peripheral wall-like self-supporting leg portion 311 protruding downward from the peripheral edge portion, or as shown in FIG. The exterior box 3 having a bottom surface portion 31 formed with a self-supporting leg portion 311 protruding downward from the portion, or a strip-like self-supporting leg portion 311 protruding downward from two opposite sides as shown in FIG. It is also possible to use an exterior box 3 or the like having a bottom surface portion 31 on which is formed. Since these bottom surfaces 31 also have a flat lower end 311a of each self-supporting leg 311, the packaging body 1 (exterior box 3) can be stably supported.

The perspective view of the packaging body for microwave oven heating which concerns on 1st Embodiment. (A) is the sectional view on the AA line of FIG. 1, (b) The sectional view on the BB line. However, in (b), only the exterior box is shown in a cross section, and the packaging bag is shown in a front view (the same applies to FIGS. 7 and 15). In addition, the shaded portion indicates a strongly heat-sealed portion of the packaging bag, and the light ink painting indicates the steaming portion of the packaging bag (hereinafter the same applies to other drawings). (A) is a perspective view of the packaging bag, (b) is a perspective view showing a modification of the packaging bag. The top view which shows the expansion | deployment sheet | seat of an exterior box. (A), (b) is a perspective view which shows the packaging body for microwave oven heating which concerns on the modification of 1st Embodiment. The perspective view of the packaging body for microwave oven heating which concerns on 2nd Embodiment. The CC sectional view taken on the line of FIG. The perspective view which shows the packaging body for microwave oven heating which concerns on the modification of 2nd Embodiment. (A) is a perspective view which shows the packaging bag of 3rd Embodiment, (b) is the DD sectional view taken on the line. (A) is a perspective view which shows the packaging body for microwave ovens which concerns on 3rd Embodiment, (b) is the EE sectional view taken on the line. , The top view which shows the expansion | deployment sheet | seat of an exterior box. (A), (b) is a perspective view which shows the microwave oven packaging body which concerns on a modification. (A) is a perspective view which shows the packaging body for microwave ovens which concerns on 4th Embodiment, (b) is the FF sectional view taken on the line. (A), (b) is a reference top view which shows the cut line for hole formation which concerns on 5th Embodiment. Sectional drawing abbreviate | omitted which shows the packaging body for microwave ovens based on 5th Embodiment. Both (a) and (b) are partially omitted cross-sectional views showing the microwave oven packaging according to the sixth embodiment. (A) is a perspective view which shows the packaging body for microwave ovens which the opening formation means which concerns on the modification was comprised, (b) is a GG sectional view of the state which formed the opening part. Sectional drawing which shows the packaging body for microwave oven heating in which the self-supporting leg part protruded from the bottom face part of the exterior box. (A), (b) is a perspective view which shows the microwave oven heating packaging body by which the self-supporting leg part protruded from the bottom face part of the exterior box.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Microwave oven heating package, 2 ... Packaging bag, 3 ... Outer box, 31 ... Bottom surface part, 32 ... Upper surface part, 33 ... Side surface part, 35 ... Square top part, 36 ... Dividing auxiliary line, 4 ... Bag main body, 41 ... Surface portion of the bag body, 42 ... Back side portion of the bag body, 43 ... Bottom gusset portion of the bag body, 5 ... Vapor passage portion, 6 ... Hole portion, 61 ... Cutting line for forming the hole portion, 62 ... Cutting Area surrounded by line, 7 ... covering member (label, film, etc.), 8 ... back pasting part, 9 ... open cut line

Claims (4)

A packaging bag in which the contents are sealed in a sealed manner and provided with a steaming section for releasing steam generated by microwave heating; and an outer box in which the packaging bag is stored.
The exterior box has a bottom surface portion that makes the exterior box self-supporting, and a top surface portion that faces the bottom surface portion and is formed in a non-flat shape.
A packaging body for heating a microwave oven, characterized in that an opening forming means is provided on a surface portion other than the bottom surface portion of the outer packaging box so as to release the vapor from the steaming section of the packaging bag to the outside of the outer packaging box. A packaging bag in which the contents are sealed in a sealed manner and provided with a steaming section for releasing steam generated by microwave heating; and an outer box in which the packaging bag is stored.
The exterior box has a bottom surface portion that makes the exterior box self-supporting, and an upper surface portion that is formed in a shape that has an arcuate shape that is opposed to the bottom surface portion and is arc-shaped or joined with at least two inclined surfaces.
A packaging body for heating a microwave oven, characterized in that an opening forming means is provided on a surface portion other than the bottom surface portion of the outer packaging box so as to release the vapor from the steaming section of the packaging bag to the outside of the outer packaging box. A packaging bag in which the contents are sealed in a sealed manner and provided with a steaming section for releasing steam generated by microwave heating; and an outer box in which the packaging bag is stored.
The outer box is formed in a frustum shape having a bottom surface part that makes the outer box self-supporting, and an upper surface part that faces the bottom surface part and has a smaller area than the bottom surface part,
A packaging body for heating a microwave oven, characterized in that an opening forming means is provided on a surface portion other than the bottom surface portion of the outer packaging box so as to release the vapor from the steaming section of the packaging bag to the outside of the outer packaging box. The microwave oven heating device according to any one of claims 1 to 3, wherein the opening forming means includes a hole portion formed in a surface portion other than the bottom surface portion of the exterior box, and a covering member that covers the hole portion and is removable. Packaging body.

Images