JP2016108038A - Exterior box and package thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior box and a package, without requiring complicated operation before heating by a microwave oven, without the risk of jetting the content even when heated by the microwave oven while storing a packing bag for the microwave oven, and without the risk of giving the user a burn when taking out of the microwave oven.SOLUTION: An exterior box 1 for heating by a microwave oven while storing a packing bag for the microwave oven having the steam release function for releasing internal pressure by steam generated by heating, is provided so that a steam release function part provided in an upper part of the packing bag for the microwave oven is positioned on a top face plate 118, by setting an angle formed by a front face plate 112 and the top face plate to 15°-45° inclusive, by inclining the top face plate for connecting a back face plate 111 and the front face plate, by making the back face plate to become the bottom side when heating shorter than the front face plate to become the top side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an outer box that is heated in a microwave oven while storing a packaging bag for a microwave oven that has a steam venting function for releasing an internal pressure due to steam generated by heating, and a package thereof.

  Foods that can be tasted simply by heating in a microwave oven, such as cooked retort curry, can be eaten easily, so in recent years not only singles but also elderly people and cooking have taken time. For those who cannot, it has become a means to eat easily.

  Such foods are curry, stew, sour pork, boiled meatballs, Happo vegetables, etc., and there is moisture inside, and when heated in a microwave oven, this water raises the energy level at a high frequency by the microwave oven. By causing vibration and rotation, other components in the surroundings are also heated and cooked as their energy is transmitted.

  A part of the heated water expands as steam and becomes a force that pushes the packaging bag for microwave oven, which is a packaging container, from the inside, and the internal pressure rises to swell round. If the pressure inside the packaging bag rises as it is and the moisture in the packaging boils, the packaging bag may explode and the contents that have become hot may scatter.

  Therefore, in order to prevent this from happening, the microwave packaging bag is provided with a steam venting function. However, if there is a high-temperature content inside the steam release function part, the high-temperature content may scatter from the packaging bag. Furthermore, when the high-frequency heating is finished and it is going to be taken out, the temperature is high, so there is a problem that it is hot when the packaging bag is touched.

  To prevent this from happening, it is safer to put the microwave packaging bag in a paper box so that it can be heated in the microwave oven. There are also advantages such as easy. In particular, the heat insulation of the paper box has the advantage that it is not hot when taken out.

  For example, in Patent Document 1, a band-shaped opening zipper is provided on the top surface of a microwave oven packaging box, and is opened from the zipper. A pillow is formed by bending the upper side of the back side to prevent the contents from coming into contact with the vapor vent during heating. However, it is troublesome for a consumer to perform such a complicated work.

  Patent Document 2 proposes a microwaveable boxed packaging bag with an automatic opening function in which an opening portion provided on the top surface is automatically opened when heated in a microwave oven.

  This microwaveable packaging bag for a microwave oven can be cooked without trouble because it can be heated by simply checking the orientation of the box and putting it in the microwave oven. Further, since the steam venting part protrudes toward the opening part, the steam venting part is naturally lifted when heated, so there is no possibility that the contents come into contact with the steam venting part.

  However, when a pouch having a structure in which the steam vent is on the side is used, the contents may come into contact with the steam vent at the time of heating, and the pouch has a special structure as shown in Patent Document 2. It is limited to a pouch with a simple structure.

Japanese Patent No. 4186726 Japanese Patent No. 5062409

  The present invention has been made in view of the above circumstances, and it is not necessary to perform complicated work before heating with a microwave oven. It is an object of the present invention to provide an outer packaging box and its packaging body that are not likely to erupt and that are unlikely to burn when taken out from a microwave oven.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the invention of claim 1 is a microwave oven heating with a microwave packaging bag having a steam venting function for releasing the internal pressure due to steam generated by heating. An exterior box that
When heating, the lower back surface is shorter than the upper front surface, the top surface connecting the back surface and the front surface is inclined, and the angle between the front surface and the top surface is 15 ° or more and 45 ° or less. It is the exterior box characterized by the above.

Invention of Claim 2 of this invention is a package which consists of the exterior box of Claim 1, and the said packaging bag for microwave ovens,
The microwave packaging bag is filled with an object to be heated, provided with a steam venting function part at the top, and stored so that the steam venting function part is located on the inclined top surface. This is a package.

  The exterior box and its package of the present invention do not require a complicated operation before heating in a microwave oven, and even if the microwave oven is heated while the packaging bag for the microwave oven is housed, the contents are ejected. There is no fear and there is no risk of burns when taking out from the microwave.

It is explanatory drawing which showed typically an example of the package of this invention in the cross section. It is explanatory drawing which showed typically the blank of the exterior box used for an example of the package body of this invention. It is explanatory drawing which showed typically the left side surface of the exterior box used for the example of the package of this invention. It is explanatory drawing which showed typically the packaging bag for microwave ovens used for an example of the package of this invention with the front. It is explanatory drawing which showed the outer packaging box of the package of the comparative example 3 by the perspective.

Hereinafter, embodiments for carrying out the present invention will be described.
FIG. 1 is an explanatory view schematically showing a cross section of an example of the package of the present invention.

  As shown in the cross-sectional view of FIG. 1, the package 100 of this example includes an outer box 1 and a microwave packaging bag 2 housed in the outer box. The microwave oven packaging bag 2 is filled with an object 3 to be heated and eaten in the microwave oven, and a vapor venting function portion is provided on the upper portion of the microwave oven packaging bag 2 (leftward in the figure). In FIG. 1, steam is generated from the food in the middle of heating, and the head space 4 is inflated.

  When the outer box 1 is heated by a microwave oven, the lower back surface is shorter than the upper front surface. When the outer box 1 is placed with the rear surface down, the top surface of the outer box 1 is inclined upward from the back side. It is supposed to be. For this reason, the steam release function part of the packaging bag 2 for microwave oven accommodated in the inside is lifted up.

  Since it has become like this, if the heating in the microwave oven is further continued, the packaging bag 2 for the microwave oven swells to the extent that the outer box 1 swells, and eventually the steam inside escapes to the outside by the steam release function. No rupture or ejection of the object 3 to be heated occurs. And it is not necessary to perform a complicated operation before heating in the microwave oven, and the microwave packaging bag 2 can be heated in the microwave oven while being stored in the outer box 1.

Hereinafter, the exterior box 1 will be described.
FIG. 2 is an explanatory view schematically showing a blank of the outer box used in an example of the package of the present invention, and FIG. 3 is a schematic left side view of the outer box used in the example of the package of the present invention. It is explanatory drawing shown.

  The outer box 1 folds the blank 101 shown in FIG. 2 with a crease (indicated by a one-dot chain line), and sticks it as necessary to make a box. In the blank 101, a back plate 111 and a front plate 112 are connected via a left side plate 113, a side sticking plate 114 is provided on the left side of the back plate 111, and a right side plate 115 is provided on the right side of the front plate 112. Is provided.

  On the upper and lower sides of the back plate 111, a top surface adhesive plate 116 and a bottom surface adhesive plate 117 are provided. A top plate 118 and a bottom plate 119 are provided above and below the front plate 112. Further, upper end edges of the left side plate 113 and the right side plate 115 are slanted, and triangular folding pieces 120 and 121 are continuously provided thereon. Further, flaps 122 and 123 are provided at the upper end edges of the left side plate 113 and the right side plate 115, respectively.

  In order to form the outer packaging box 1 containing the microwave packaging bag 2 using the blank 101, first, an adhesive is applied to the front surface of the side adhesive plate 114, and the back surface of the right side plate 115 is applied. Adhere to the tube to make it cylindrical.

  Next, a crease between the left side plate 113 and the folded piece 120 is folded, the folded piece 120 is folded inward, and a crease between the right side plate 115 and the folded piece 121 is folded, and the folded piece 121 is folded. Bend inward.

  And an adhesive agent is apply | coated to the front surface of the folding pieces 120 and 121, and the back surface of the top | upper surface sticking board 116 is stuck to the front surface of the folding pieces 120 and 121. FIG. Further, the back surface of the top plate 118 is attached to the front surface of the top plate 116.

  In addition, the top surface attaching plate 116 is folded first and then tilted, the back surfaces of the folding pieces 120 and 121 are attached to the front surface of the top surface attaching plate 116, and then the top surface plate 118 is brought down. The back surface of the top plate 118 may be attached to the front surface of the top surface attaching plate 116 or the folded pieces 120 and 121.

  And the packaging bag 2 for microwave ovens with which the to-be-heated material was filled is inserted and accommodated from the bottom face sticking board 117 and the bottom face board 119 which are open. At this time, when the steam vent function part of the microwave oven packaging bag 2 is placed in the back and the outer box 1 is placed with the back plate 111 facing down, the steam venting is performed. The functional part is placed on the inclined top surface attaching plate 116.

The flaps 122 and 123 are tilted inward, the bottom adhesive plate 117 is also tilted inward, the bottom plate 119 is tilted, and the back surface of the bottom plate 119 is adhered to the front surface of the bottom adhesive plate 117. The outer box 1 is sealed. As a result, the outer packaging box 1 containing the microwave packaging bag 2 filled with the object to be heated is boxed, and the package 100 is manufactured.

  The angle θ between the front plate 112 and the top plate 118 shown in the left side view of FIG. 3 is preferably an acute angle. Furthermore, it is desirable that it is 15 degrees or more and 45 degrees or less. When the angle θ is larger than 45 °, the steam release function part of the microwave packaging bag 2 is lowered, and the content approaches the steam release function part, so that there is a possibility that it may be ejected during heating. On the other hand, if the angle is less than 15 °, there arises a problem that the microwave packaging bag 2 does not enter the interior box 1 or does not enter at all.

  In order to heat cook this package 100 in a microwave oven, it can be placed in the microwave oven and cooked with the bottom plate 119 down. When the bottom plate 119 is placed downward, the steam release function portion of the microwave packaging bag 2 housed in the outer box 1 is raised by the inclined top plate 118, and the contents are heated when the steam escapes. Things do not erupt. Therefore, the outer box 1 itself does not become so hot as to be burned, and can be easily taken out from the microwave oven.

The paper used for the outer box 1 varies depending on the weight of the contents, but usually, coated cardboard or card paper having a basis weight of 120 g / m ² to 400 g / m ² is preferably used. The paper density is preferably in the range of 0.6 to 1.1 g / cm ³ . The inner surface or inner and outer surfaces may be coated with a resin such as polyethylene.

  Emulsion adhesives such as vinyl acetate / acrylic copolymer and ethylene vinyl alcohol can be used as the adhesive used for box making. Examples of such devices include Life Bond (registered trademark) AV-650Y4 and AV-650Y6 manufactured by Niei Engineering Co., Ltd., and Cybinol (registered trademark) DBA155L and DBA164 manufactured by Seiden Chemical Co., Ltd.

Hereinafter, the microwave packaging bag 2 will be described.
FIG. 4 is an explanatory view schematically showing a microwave packaging bag used in an example of the package of the present invention on the front.

  As shown in FIG. 4, the microwave packaging bag 2 is a modified four-side sealed bag provided with left and right side seal portions 201 and 202 and a top seal portion 203. In addition, the part which provides a ground seal part is unsealed as the filling port 204 which fills the to-be-heated material of the contents. And in the packaging bag 2 for microwave ovens of this example, the steam release function part 205 which curved the right side seal 202 inward was provided in the upper part of the packaging bag and the top seal part 203 side.

  Thus, when heated in a microwave oven, the microwave packaging bag 2 swells due to an increase in internal pressure due to the generation of steam, etc., and this curved seal portion peels from the inner end. In time, the seal part peels off at this part, and the head space 4 swelled by the generation of steam in the microwave oven packaging bag 2 communicates with the outside, escapes the steam to the outside, and the microwave oven packaging bag 2 bursts. To prevent. Further, since the communication with the outside is a partial communication, there is an effect of steaming the contents even after the communication.

  The left and right side seal portions 201 and 202 that are further closer to the top seal portion 203 are provided with notches 206 and 206 in order to open openings for taking out the contents after cooking.

In this example, the steam venting function part is provided as a side seal part curved inward, but the present invention is not limited to this, and the seal part continuous from the side seal part or the top seal part is provided so as to surround the non-seal part. It is good also as a steam release function part which provided the through-hole which communicates with external air in a seal part, and the continuous seal part peeled and it was made to communicate with external air. Further, an annular seal portion separated from the side seal portion and the top seal portion may be provided, and an unsealed portion and a through hole may be similarly provided to serve as a vapor vent function portion.

  Furthermore, an easy peel film is sandwiched between the top seal part, or an easy peel film is sandwiched between the seal part provided in parallel with the top seal part and penetrated between the seal parts provided in parallel with the top seal part. It is good also as a vapor venting function part by providing a hole. In short, it is only necessary to provide a steam release function part through which the generated steam escapes on the top of the bag, on the top seal part, or on the side near the top seal part.

  The packaging material used for the microwave packaging bag 2 is preferably a laminated film in which a base material layer and a sealant layer are laminated. As the base material layer, a biaxially stretched film such as a polyester resin or a nylon resin is preferably used.

  Moreover, when barrier property is required, films, such as an ethylene vinyl alcohol copolymer with a barrier property, and MXD6 nylon, can be used. Moreover, the inorganic oxide vapor deposition film which vapor-deposited silica, an alumina, etc. can also be used. The above-mentioned film can be used as the vapor deposition substrate film of the inorganic oxide vapor deposition film. Moreover, it is good also as a multilayer base material layer by laminating | stacking combining these.

  As the sealant layer, a polyethylene resin or polypropylene film is preferably used. Moreover, an easy peel sealant film can be used partially or entirely.

  Specific examples of the present invention will be described below.

<Example 1>
As a packaging bag 2 for microwave oven, a printing layer is provided with urethane-based two-component curable ink on the vapor deposition side of the back side of the alumina vapor-deposited polyethylene terephthalate film 12 μm, and the biaxially stretched 6 nylon film 15 μm is unstretched on the surface side of the print layer A polypropylene film of 60 μm was sequentially laminated by dry lamination using a urethane-based two-component curable adhesive to prepare a packaging material for a microwave packaging bag.

  Using this packaging material, a microwave packaging bag 2 having a steam venting function portion 205 provided on the right side seal portion 202 as shown in FIG. 4 is prepared, filled with 180 ml of water from the filling port 204, and the filling port is sealed. Then, a ground seal portion was provided and sealed.

A blank 101 as shown in FIG. 2 is prepared using coated cardboard having a basis weight of 320 g / m ² as the outer box 1 so that the angle θ formed by the front plate 112 and the top plate 118 is 15 °. Thus, the outer box 1 was boxed. Then, the microwave packaging bag 2 filled and sealed with water of the article 3 to be heated is inserted and sealed so that the steam release function part 205 is on the inclined top plate 120 of the outer box 1, As shown in FIG. 1, an outer box 1 containing a microwave packaging bag 2 was created, and a package of Example 1 was created.

<Example 2>
A package of Example 2 was made in the same manner as Example 1 except that the outer box 1 was boxed so that the angle θ formed by the front plate 112 and the top plate 118 was 30 °.

<Example 3>
A package of Example 3 was made in the same manner as Example 1 except that the outer box 1 was boxed so that the angle θ formed by the front plate 112 and the top plate 118 was 45 °.

  Below, the comparative example of this invention is demonstrated.

<Comparative Example 1>
A package of Comparative Example 1 was prepared in the same manner as in Example 1 except that the outer box 1 was boxed so that the angle θ formed by the front plate 112 and the top plate 118 was 50 °.

<Comparative Example 2>
A package of Comparative Example 2 was prepared in the same manner as in Example 1 except that the outer box 1 was boxed so that the angle θ formed by the front plate 112 and the top plate 118 was 10 °.

<Comparative Example 3>
A wrapping paper box having the shape described in Patent Document 1 was used as the outer box. That is, as shown in FIG. 5, two horizontal strip-like opening mechanisms 132 formed by providing two cut lines a in parallel above the upper surface plate 131 are connected to both edges of the upper surface plate 131. The lower surface plate which is provided continuously from the two side plates 133 and 133 and which is opposite to the upper surface plate 131 is on the same line as the lower cut line a of the band-shaped opening mechanism 132 and is continuous with the cut line. Is a wrapping paper box 10.

For the wrapping paper box 10, coated cardboard having the same basis weight of 320 g / m ² as in Example 1 was used. And the packaging body of the comparative example 3 was created like Example 1 except having used this packaging paper box 10 as an exterior box.

<Comparative example 4>
As an exterior bag, a comparative example was made in the same manner as in Example 1 except that an exterior box having substantially the same dimensions as the front plate 112 and the back plate 111 and an angle θ of 90 ° formed by the front plate 112 and the top plate 118 was used. 4 packages were prepared.

<Test method>
The packaging bodies of the examples and the comparative examples were tested by the following methods and evaluated comparatively.

<Simpleness>
The packaging bodies of Examples 1 to 3 and Comparative Examples 1 and 4 were placed in the microwave oven with the back plate 111 facing down.

  Before the packaging body of Comparative Example 3 is put on the microwave oven, the band-shaped unsealing mechanism 132 of FIG. 5 is cut off, and the portion above the unsealing mechanism 132 is folded outward at the lateral break line of the lower surface plate 135, and the packaging bag With the upper part of the top exposed, it was placed with the upper part folded back in the microwave.

  The packaging body in which the angle θ formed by the front plate 112 and the top plate 118 of Comparative Example 2 was 10 ° could not accommodate the microwave packaging bag 2 in the outer box 1 and was not tested.

  Compare the work to install in the microwave oven, evaluate the simple packaging as ○, evaluate the troublesome packaging as ×, evaluate the packaging that is not simple but troublesome as △, and evaluate the result. The results are summarized in Table 1.

<Blowout of contents>
In the convenience evaluation, the package installed in the microwave oven was cooked as it was in the microwave oven, and it was evaluated whether or not the water of the contents instead of the article to be heated spouted.

A microwave oven of 600 W was used, and heating was performed for 1 minute and 40 seconds.
The package in which the water of the contents was not ejected was evaluated as “◯”, and the package that had been ejected was evaluated as “×”, and the results are summarized in Table 1.

  Below, the comparison result of an Example and a comparative example is demonstrated.

<Comparison result>
The packaging bodies of Examples 1 to 3 were simple and easy to install in the microwave oven, and the contents were not ejected when heated excessively in the microwave oven, and the overall evaluation was good. .

  The package of Comparative Example 1 was simple and not particularly required to be installed in the microwave oven, as in Examples 1 to 3, but the contents erupted when heated excessively in the microwave oven. It was a decisive functional defect, and the overall evaluation was x.

  The package of Comparative Example 2 cannot store the microwave packaging bag 2 in the outer box 1 and cannot perform the test itself. For this reason, comprehensive evaluation was set to x.

  The packaging body of Comparative Example 3 is not easy but troublesome until it is installed in the microwave oven, and there is no jet of contents when heated excessively in the microwave oven. △.

  The package of Comparative Example 4 does not require any work until it is installed in the microwave oven, and the convenience is once good. However, when heated excessively in the microwave oven, the contents erupt, which is decisive. It was a bad functional defect, and was evaluated as x in the comprehensive evaluation.

  In addition, in taking out from the microwave oven after a heating, since all were contained in the paper box, it was not so hot as to be burned.

DESCRIPTION OF SYMBOLS 100 ... Packaging 1 ... Outer box 2 ... Microwave packaging bag 3 ... Heated object 4 ... Head space 5 ... Pillow part 101 ... Blank 111 ... Back Face plate 112 ... Front plate 113 ... Left side plate 114 ... Side surface adhesive plate 115 ... Right side surface plate 116 ... Top surface adhesive plate 117 ... Bottom surface adhesive plate 118 ... Top surface plate 119 ... Bottom plate 120, 121 ... Folding piece 122, 123 ... Flap 201 ... Left side seal part 202 ... Right side seal part 203 ... Top seal part 204 ... Filling port 205 ... Vapor venting functional unit 206 ... Notch 10 ... Wrapping paper box 131 ... Top plate 132 ... Opening mechanism 133 ... Side plate a ... Cut line

Claims (2)

A packaging box for a microwave oven equipped with a steam venting function for releasing the internal pressure due to steam generated by heating is an outer box that heats the microwave oven while being stored,
When heating, the lower back surface is shorter than the upper front surface, the top surface connecting the back surface and the front surface is inclined, and the angle between the front surface and the top surface is 15 ° or more and 45 ° or less. An exterior box characterized by that. A package comprising the exterior box according to claim 1 and the microwave oven packaging bag,
The microwave packaging bag is filled with an object to be heated, provided with a steam venting function part at the top, and stored so that the steam venting function part is located on the inclined top surface. A package.

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