JP2014227203A - Packaging box and material plate of box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize adjustment of an angle inclination of a pouch according to a heating condition.SOLUTION: A packaging box according to an aspect of the present invention is a flat packaging box having a steam port near an upper part for storing a pouch to be heated in a microwave oven. The packaging box is opened to be separated into a main body part and a rid part. The main body part holds the pouch when the pouch is heated in the microwave oven. The rid part is connected to the main body part with a hinge part at a back plate side region. The rid part is folded along the hinge part and in contact with the back plate side region of the main body part to support the main body part. In addition, the main body part is configured to deform in a height direction when the pouch is heated in the microwave oven to expand in the height direction. By virtue of the deformation, inclination for holding the pouch can be increased.

Description

  The present invention relates to a packaging box technology.

  There are retort foods that are cooked by heating in a microwave oven while still in a pouch. For example, Patent Documents 1 to 3 disclose a technique related to a packaging box that holds a pouch heated in a microwave oven at a predetermined inclination.

JP 2006-046695 A JP 2006-046696 A JP 2012-246056 A

  By the way, the conventional packaging box described above has the following problems. FIG. 1 illustrates the heating state of the retort food in the microwave oven. The hatched portion in the figure indicates a region that is not easily affected by microwaves. When the retort food contains salt, the microwave is easily converted into heat on the surface of the retort food. Therefore, it becomes difficult for the microwave to reach the inside of the retort product.

  For example, in the case of a retort food having a salinity of 0.5 to 2%, the microwave is about 5 mm (millimeters) and consumes about half energy. As a result, in the retort food having a depth of more than about 1 cm (centimeter), the influence of the microwave is small, and a region where heating is delayed is likely to occur.

  In this regard, as illustrated in FIG. 1, as the inclination of the pouch becomes higher, the contents of the pouch accumulate in the lower part, and the thickness of the contents of the pouch increases. Therefore, the higher the inclination of the pouch, the worse the heating efficiency of the contents of the pouch.

  On the other hand, FIG. 2 illustrates the relationship between the contents of the pouch and the steam port. When the retort food is heated in the range while sealed in the pouch, steam is generated from the retort food (contents). When steam is generated from the contents, the internal pressure in the pouch increases and the pouch may burst. In order to prevent this, many pouches of the type of food heated in a microwave oven have a steam port for releasing steam generated in the pouch.

  At this time, as illustrated in FIG. 2, the distance between the contents of the pouch and the steam port becomes longer as the inclination of the pouch becomes higher. Therefore, the higher the inclination of the pouch, the more difficult it is for the contents of the pouch to be ejected from the steam port.

  That is, in a heating state in which steam is not ejected from the steam port of the pouch, it is not necessary to consider the ejection of the contents. Therefore, the inclination of the pouch is preferably low so that the heating efficiency is improved. On the other hand, when the heating proceeds until the steam is ejected from the steam port of the pouch, the inclination of the pouch is preferably high so that the contents are not easily ejected even if the heating efficiency is somewhat sacrificed.

  Therefore, when heating the food enclosed in the pouch with a microwave oven, it is possible to realize ideal microwave heating if the inclination angle of the pouch can be adjusted according to the heating state. However, a conventional packaging box that holds a pouch heated in a microwave oven is basically configured to keep the pouch posture constant. For this reason, the conventional packaging box cannot adjust the inclination angle of the pouch according to the heating state.

  In one aspect, the present invention has been made in consideration of such points, and an object thereof is to provide a technique that makes it possible to adjust the inclination angle of the pouch according to the heating state.

  The present invention employs the following configuration in order to solve the above-described problems.

  That is, the 1st form of this invention is a flat packaging box for storing the pouch which has a steam port near upper part and is heated with a microwave oven. The packaging box is located at the front plate, the right side plate located at the right end of the front plate in the horizontal direction, the left side plate located at the left end of the front plate in the horizontal direction, and the upper end in the vertical direction of the front plate. A top plate, a bottom plate located at the lower end in the longitudinal direction of the front plate, and a back plate facing the height direction of the front plate.

  Moreover, the said front board has a 1st cut line for opening the said packaging box in the vertical direction upper side. The right side plate has a second score line continuous with the first score line. The left side plate has a third score line that is continuous with the first score line. The back plate includes a hinge part, and a fourth cut line and a fifth cut line arranged at both ends of the hinge part. The fourth score line is continuous with the second score line. The fifth score line is continuous with the third score line.

  And the said packaging box is divided into a main-body part and a cover part by opening along a 1st cut line, a 2nd cut line, a 3rd cut line, a 4th cut line, and a 5th cut line. . The main body holds the pouch when the pouch is heated in the microwave oven. Further, the lid portion is connected to the main body portion by the hinge portion in the back plate side region, is bent along the hinge portion, and is in contact with the back plate side region of the main body portion. The main body is supported.

  Further, the main body is heated in the microwave oven because the horizontal lengths of the fourth cut line and the fifth cut line are each 10% or more of the horizontal length of the back plate. Thus, when the pouch swells in the height direction, the pouch is configured to be deformed in the height direction, and the inclination for holding the pouch can be increased by the deformation.

  According to the said structure, a packaging box is divided into a main-body part and a cover part by opening in an upright type along a series of cut lines. The back plate of the packaging box has a hinge portion, a fourth cut line, and a fifth cut line, and the main body portion and the lid portion are connected by the hinge portion in each back plate side region. The

  The main body is configured to be able to hold the pouch when the pouch is heated in a microwave oven. Further, the lid portion is bent along the hinge portion in the back plate side region and contacts the back plate side region of the main body portion, thereby supporting the main body portion holding the pouch.

  Here, the horizontal lengths of the fourth cut line and the fifth cut line of the back plate are configured to be 10% or more of the horizontal length of the back plate. Accordingly, the main body is configured to be deformed in the height direction when the pouch is expanded in the height direction by being heated in the microwave oven. And the main-body part is comprised so that the inclination which hold | maintains a pouch can be made high by the said deformation | transformation.

  Therefore, the packaging box according to one aspect of the present invention can increase the inclination for holding the pouch in response to the pouch to be stored inflating in the height direction. Therefore, according to the said structure, it becomes possible to adjust the inclination-angle of a pouch according to a heating state.

  According to a second aspect of the present invention, the fourth cut line and the fifth cut line are formed in an arc shape protruding upward in the longitudinal direction of the back plate, the hinge portion is the fourth cut line, and the fourth cut line is the first cut line. It is a packaging box of the 1st form located in the longitudinal direction lower side of the back board rather than the position where it connects with 2 score lines, and the position where the 5th score line connects with the 3rd score line.

  According to the said structure, it becomes possible to make the position which supports a main-body part with a cover part into the comparatively lower side of the vertical direction of the said main-body part. Since the inclination of the main body that holds the pouch becomes higher as it is supported on the lower side of the main body in the vertical direction, according to the configuration, the back plate side region of the main body can be deformed downward in the height direction. The amount of increase in the slope holding the pouch can be increased.

  A third form of the present invention is the packaging of the first form or the second form, wherein the hinge part has a plurality of cut parts arranged in the vicinity of the center in the lateral direction of the back plate and arranged at predetermined intervals. It is a box. According to the said structure, the backplate side area | region of a main-body part becomes easy to deform | transform into the height direction lower side in the center vicinity of the horizontal direction of the said backplate. Therefore, it is possible to increase the amount of increase in inclination that holds the pouch against expansion in the height direction of the pouch.

  A fourth form of the present invention is the packaging box according to any one of the first form to the third form, wherein the lateral length of the hinge portion is 15% or more of the lateral length of the back plate. is there. According to the said structure, when opening a packaging box etc., it becomes possible to prevent that a backplate is torn along a hinge part and a cover part isolate | separates from a main-body part.

  A fifth form of the present invention is a box original plate for producing a packaging box of any one form of the first form to the fourth form. According to the said structure, the inclination angle of a pouch can be adjusted now according to a heating state.

  According to the present invention, the inclination angle of the pouch can be adjusted according to the heating state.

FIG. 1 illustrates the heating state of the retort food in the microwave oven. FIG. 2 illustrates the relationship between the contents of the pouch and the steam outlet. FIG. 3 illustrates a state (box original plate) in which the packaging box according to the embodiment is developed. FIG. 4A is a perspective view illustrating the packaging box according to the embodiment. FIG. 4B is a perspective view illustrating a state in which the packaging box according to the embodiment is viewed from the back. FIG. 5 illustrates a pouch stored in the packaging box according to the embodiment. FIG. 6 illustrates a state where the packaging box according to the embodiment is opened. FIG. 7 illustrates the usage state of the packaging box according to the embodiment. FIG. 8 illustrates the usage state of the packaging box according to the embodiment. FIG. 9 illustrates a state at the time of deformation of the packaging box according to the embodiment. FIG. 10 shows a modification of the cutting part included in the hinge part. FIG. 11 shows a state where the packaging box according to the comparative example is developed.

  Hereinafter, an embodiment according to an aspect of the present invention (hereinafter, also referred to as “this embodiment”) will be described with reference to the drawings. However, this embodiment described below is only an illustration of the present invention in all respects. Various improvements and modifications may be made without departing from the scope of the present invention. That is, in implementing the present invention, a specific configuration according to the embodiment may be adopted as appropriate.

§1 Configuration example <Packaging box>
FIG. 3 illustrates a state (box original plate 10) in which the packaging box 1 according to the present embodiment is developed. FIG. 4A is a perspective view illustrating the packaging box 1 created by assembling the box original plate 10. FIG. 4B is a perspective view illustrating a state in which the packaging box 1 created by assembling the box original plate 10 is viewed from the back side. First, the basic structure of the packaging box 1 according to this embodiment will be described with reference to these drawings.

  The packaging box 1 according to the present embodiment accommodates a pouch 2 such as a food as will be described later, and bends and pastes a pre-cut paper flat box original plate 10 illustrated in FIG. By doing so, a rectangular parallelepiped packaging box as shown in FIGS. 4A and 4B is formed. The box original plate 10 (packaging box 1) is manufactured using paper such as coated cardboard and card paper as a main raw material.

  As illustrated in FIGS. 4A and 4B, the packaging box 1 is positioned at the front plate 11, the right side plate 12 positioned at the right end of the front plate 11 in the horizontal direction, and the left end of the front plate 11 in the horizontal direction. The left side plate 13, the top plate 15 positioned at the upper end in the vertical direction of the front plate 11, the bottom plate 16 positioned at the lower end in the vertical direction of the front plate 11, and the rear plate facing the height direction of the front plate 11. 14.

  Note that the packaging box 1 according to the present embodiment is a flat type in which the distance between the front plate 11 and the back plate 14 is shorter than between the right side plate 12 and the left side plate 13 and between the top plate 15 and the bottom plate 16. It has a rectangular parallelepiped shape. However, the size and shape of the packaging box 1 may be appropriately designed according to the embodiment.

  For example, the long side direction and the short side direction may be interchanged, and the packaging box 1 may have a shape other than a rectangular parallelepiped as exemplified in the present embodiment. In addition, in this embodiment, since the packaging box 1 is deformed according to the swelling of the pouch 2 as will be described later, for example, the size and shape of the packaging box 1 are considered in consideration of the size and shape of the pouch 2 described later. May be designed.

  Here, each direction quoted in this embodiment is demonstrated. The horizontal direction (x-axis direction) in FIG. 3 corresponds to the short side direction of the rectangular front plate 11 and corresponds to the “lateral direction” of the present invention. The positive direction of the x axis corresponds to the right direction of the horizontal direction. The negative direction of the x axis corresponds to the left direction of the horizontal direction.

  3 corresponds to the long side direction of the front plate 11 and corresponds to the “longitudinal direction” of the present invention. The positive direction of the y axis corresponds to the upward direction in the vertical direction. The negative direction of the y-axis corresponds to the downward direction of the vertical direction.

  3 corresponds to the direction in which the front plate 11 and the back plate 14 face each other, and corresponds to the “height direction” of the present invention. The positive direction of the z axis corresponds to the upward direction in the height direction. The negative direction of the z axis corresponds to the downward direction of the height direction.

  Note that the x-axis, y-axis, and z-axis in the drawings after FIG. 4A correspond to the x-axis, y-axis, and z-axis in FIG. 3, respectively.

  Next, details of the packaging box 1 will be described with reference to a development view of FIG. As illustrated in FIG. 3, the front plate 11 has a first cut line 111 for opening the packaging box 1 on the upper side in the vertical direction. The form of the 1st score line 111 may be designed suitably according to embodiment.

  In the present embodiment, the first score line 111 extends in the vicinity of the center in the lateral direction of the front plate 11 to the right side plate 12 from the arc-shaped central fracture portion 111a protruding downward in the vertical direction and the right end of the central fracture portion 111a. It has a right fracture portion 111b and a left fracture portion 111c extending from the left end of the central fracture portion 111a to the left side plate 13.

  Further, the front plate 11 has a front plate bent portion 112 used at the time of opening. The front plate bent portion 112 is formed at a position closer to the upper surface plate 15 side than the central fracture portion 111a, and continuously extends between the right fracture portion 111b and the left fracture portion 111c. When the packaging box 1 is opened, the front plate 11 is broken along the first cut line 111. At this time, the front plate bent portion 112 and the region P surrounded by the front plate bent portion 112 and the central fracture portion 111 a are pushed into the internal space of the packaging box 1 to form an opening in the front plate 11. A finger is caught in this opening, and is used to break the front plate 11 along the first cut line 111.

  The right side plate 12 has a second cut line 121 that is continuous with the first cut line 111 of the front plate 11. The second score line 121 may be appropriately designed according to the embodiment. In the present embodiment, the second cut line 121 extends in parallel to the height direction.

  Further, the right side plate 12 is glued to a glue margin piece 17 connected in the lateral direction (right side in FIG. 3) of the back plate 14 of the box original plate 10. The adhesive margin piece 17 has an adhesive margin cut line 171 that is overlapped with the second cut line 121 of the right side plate 12. When the packaging box 1 is opened along the second cut line 121 by overlapping the cut line 171 for the paste piece with the second cut line 121, the paste piece 17 is cut into the cut line 171 for the paste piece. Is broken along.

  In addition, the box original board 10 which concerns on this embodiment is formed so that the paste margin piece 17 may be glued to the right side surface board 12. FIG. However, the box original plate 10 is not limited to such a form, and may be formed, for example, so that the paste margin piece 17 is glued to the left side plate 13.

  Similarly, the left side plate 13 has a third cut line 131 that is continuous with the first cut line 111 of the front plate 11. The third score line 131 may be designed as appropriate according to the embodiment. In the present embodiment, the third cut line 131 extends parallel to the height direction.

  The back plate 14 includes a hinge part 141, and a fourth cut line 142 and a fifth cut line 143 that are disposed at both ends of the hinge part 141. As will be described later, the hinge portion 141 is configured to connect the main body portion A1 and the lid portion A2 when the packaging box 1 is opened. The fourth score line 142 is continuous with the second score line 121, and the fifth score line 143 is continuous with the third score line 131.

  The lateral length (w2) of the fourth score line 142 and the lateral length (w3) of the fifth score line 143 are such that the packaging box 1 is easily deformed according to the expansion of the pouch 2, as will be described later. Therefore, the back plate 14 is formed so as to be 10% or more of the lateral length (w1 + w2 + w3).

  In addition, the shape of the 4th cut line 142 and the 5th cut line 143 may be designed suitably according to embodiment. For example, the fourth cut line 142 and the fifth cut line 143 may not be formed symmetrically. In the present embodiment, the fourth cut line 142 and the fifth cut line 143 are formed in an arc shape that protrudes upward in the vertical direction of the back plate. As a result, the hinge portion 141 is longer than the position at which the fourth cut line 142 is connected to the second cut line 121 and the position at which the fifth cut line 143 is connected to the third cut line 131 from the vertical direction of the back plate 14. It is formed to be located on the lower side in the direction.

  Also, the form of the hinge part 141 may be appropriately designed according to the embodiment. For example, as illustrated in FIGS. 3 and 4B, the hinge part 141 may have a cutting part 144 disposed near the center in the lateral direction of the back plate 14. The shape and the number of the cutting portions 144 may be appropriately designed according to the embodiment. For example, as shown in FIGS. 3 and 4B, a circle that is convex upward and downward is convex. The hinge part 141 can be comprised by forming the arc-shaped cutting part 144 alternately with a predetermined space | interval.

  Furthermore, the shape and length of the hinge part 141 may be appropriately designed according to the embodiment. In this embodiment, the horizontal length (w1) of the hinge portion 141 is formed to be 15% or more of the horizontal length (w1 + w2 + w3) of the back plate 14.

  The upper surface plate 15 is formed of a flap 122 and a flap 132, and a first upper surface plate piece 151 and a second upper surface plate piece 152 which are overlaid thereon. The flap 122 is located at the upper end in the vertical direction of the right side plate 12. The flap 132 is located at the upper end of the left side plate 13 in the vertical direction. The first upper surface plate piece 151 is located at the upper end of the front plate 11 in the vertical direction. The second upper surface plate piece 152 is located at the upper end in the longitudinal direction of the rear surface plate 14.

  Further, the bottom plate 16 is formed of a flap 123 and a flap 133, and a first bottom plate piece 161 and a second bottom plate piece 162 overlying them. The flap 123 is located at the lower end in the vertical direction of the right side plate 12. The flap 133 is located at the lower end in the vertical direction of the left side plate 13. The first bottom plate piece 161 is located at the lower end in the vertical direction of the front plate 11. The second bottom plate piece 162 is located at the lower end in the longitudinal direction of the back plate 14.

  Next, the procedure for producing the packaging box 1 from the box original plate 10 configured as described above will be described. First, in the box original plate 10, the front plate 11, the right side plate 12, the left side plate 13, the back plate 14, and the adhesive margin piece 17 are bent at adjacent boundaries, and the right side plate 12 is placed on the adhesive margin piece 17. Overlaid and glued.

  Next, the flap 122 and the flap 132 are respectively bent inward, and the first upper surface plate piece 151 and the second upper surface plate piece 152 are bent and stacked on the flap 122 and the flap 132. Then, the first upper surface plate piece 151 and the second upper surface plate piece 152 are glued together.

  Further, the flap 123 and the flap 133 are respectively bent inward, and the first bottom plate piece 161 and the second bottom plate piece 162 are bent and stacked on the flap 123 and the flap 133. Then, the first bottom plate piece 161 and the second bottom plate piece 162 are glued together.

  By assembling the box original plate 10 in this way, the packaging box 1 illustrated in FIGS. 4A and 4B is formed. In the process of forming the packaging box 1, the packaging box 1 contains a pouch having a steam port near the top and heated by a microwave oven. The pouch stored in the packaging box 1 may be appropriately selected according to the embodiment. In the present embodiment, the following pouch 2 is selected.

<Pouch>
FIG. 5 illustrates a plan view of the pouch 2 accommodated in the packaging box 1 according to the present embodiment. The pouch 2 includes a bag body formed of a film that can transmit microwaves, and a food F that can be heated in a microwave oven is contained in a sealed state inside the bag body. And as a whole, it is formed in the rectangular flat shape so that it can accommodate in the packaging box 1 mentioned above.

  The pouch 2 is formed in a bag shape by heat-sealing the peripheral edge portions 21 of the two films formed in a rectangular shape. A steam port 22 is formed inside the peripheral edge 21 at the upper left corner of the pouch 2. This is for the following reason. When the pouch 2 is heated in a microwave oven, steam is generated from the food F, and the internal pressure of the pouch 2 increases. For this purpose, the pouch 2 is provided with a steam port 22 that is opened when the internal pressure rises and allows the steam inside the pouch 2 to escape.

  The steam port 22 may be appropriately designed according to the embodiment. In the present embodiment, as illustrated in FIG. 5, the steam port 22 is formed by applying a circular heat seal 221 to the film constituting the bag body of the pouch 2, and further, a through hole 222 in the center of the heat seal 221. It is formed by providing.

  The heat seal 221 peels between films within a pressure range in which the pouch 2 does not rupture when the internal pressure of the main body of the pouch 2 rises by heating the pouch 2 with a microwave oven, and the inside of the pouch 2 has a through hole 222. Can be communicated to. That is, the heat seal 221 is a weaker seal portion than the peripheral edge portion 21.

  As will be described later, the pouch 2 is accommodated in the main body A1 of the packaging box 1 and heated in a microwave oven. At this time, in this embodiment, the pouch 2 is stored in the main body A1 in the long side direction (vertical direction, y-axis direction in the drawing). Therefore, the steam port 22 is provided in an upper half region (near the upper portion) of the pouch 2 in the vertical direction.

  The shape and size of the pouch 2 may be designed as appropriate according to the embodiment. In this embodiment, the pouch 2 is stored in the packaging box 1. Moreover, as will be described later, the packaging box 1 is deformed when the pouch 2 swells. Furthermore, the pouch 2 contains the food F. Therefore, the shape and size of the pouch 2 may be created in consideration of these factors.

<Open state>
The packaging box 1 according to the present embodiment accommodates such a pouch 2 and forms a package 100. And a user opens the packaging box 1 as follows. The first score line 111, the second score line 121, the third score line 131, the fourth score line 142, and the fifth score line 143 have, for example, sewing-like notches formed through the respective plates. .

  First, the front plate 11 is broken along the central fracture portion 111a of the first cut line 111 by pushing the region P of the packaging box 1 shown in FIG. At this time, the user folds the region P inside the packaging box 1 along the front plate bending portion 112.

  Then, the user pulls up the vicinity of the region P bent toward the inner side of the packaging box 1 so that the vicinity of the central fracture portion 111a is followed by the right fracture portion 111b and the left fracture portion 111c of the first cut line 111. The front plate 11 is broken.

  Subsequently, the user breaks the right side plate 12 along the second cut line 121 following the breaking of the front plate 11 along the right breaking portion 111b. At the same time, following the break of the front plate 11 along the left broken portion 111 c, the left side plate 13 is broken along the third cut line 131.

  Further, the user breaks the fourth cut line 142 of the back plate 14 following the break of the right side plate 12 and breaks the fifth cut line 143 of the back plate 14 following the break of the left side plate 13. . By such a user opening act, the packaging box 1 is opened along the first cut line, the second cut line, the third cut line, the fourth cut line, and the fifth cut line, and the opening is opened. The packaging box 1 is divided into a main body part A1 and a lid part A2 in a state where the packaging box 1 is connected by a hinge part 141. Thus, the pouch 2 is exposed to the outside from the opening of the main body A1.

  FIG. 6 illustrates a state where the packaging box 1 of the package 100 is opened. As illustrated in FIG. 6, the portion below the opening of the packaging box 1 is the main body portion A1, and the portion above the opening of the packaging box 1 is the lid portion A2. The lid portion A2 is bent at the hinge portion 141 and disposed on the back plate 14 side of the main body portion A1. The main body A1 is a portion that holds the pouch 2 when the pouch 2 is heated in a microwave oven. On the other hand, as will be described later, the lid portion A2 is a portion that supports the main body portion A1 that holds the pouch 2 when the pouch 2 is heated in a microwave oven.

  In the present embodiment, the pouch 2 is stored in the packaging box 1 so that the surface with the steam port 22 faces the front plate 11 side region of the main body A1. The pouch 2 is stored in the packaging box 1 so that the upper side in the vertical direction of the pouch 2 faces the upper surface plate 15. Furthermore, in this embodiment, the pouch 2 is accommodated in the packaging box 1 so that both mechanisms of the pouch 2 are covered in the main body A1. By doing in this way, even if the food F ejects from the steam port 22, at least a part of the ejected food F can be retained in the main body A1.

  In the present embodiment, as shown in FIG. 3, the lateral length (w1) of the hinge portion 141 that joins the main body portion A1 and the lid portion A2 is the lateral length (w1 + w2 + w3) of the back plate 14. ) Of 15% or more. Thereby, when opening the packaging box 1 or the like, it is possible to reduce the possibility that the back plate 14 is torn along the hinge portion 141 and the main body portion A1 and the lid portion A2 are separated. .

<Use state>
Next, the use state of the packaging box 1 at the time of heating the food F in which the pouch 2 was accommodated with a microwave oven is demonstrated using FIGS. FIG. 7 illustrates the state of the packaging box 1 in the initial stage of heating. FIG. 8 illustrates the state of the packaging box 1 when the heating proceeds. FIG. 9 illustrates the state of the packaging box 1 as viewed from a direction different from that in FIG. 8 when the heating proceeds.

  First, a user who desires to heat the food F with a microwave oven opens the packaging box 1. In the case where the pouch 2 is stored in the packaging box 1 in advance, in other words, after opening the packaging box 1 in the package 100, the user maintains the state where the pouch 2 is stored in the main body portion A1, while The part A2 is bent along the hinge part 141 (FIG. 7). The lid portion A2 is connected to the main body portion A1 by the hinge portion 141 in the region on the back plate 14 side, is bent along the hinge portion 141, and comes into contact with the region on the back plate 14 side of the main body portion A1. The main body A1 is supported. The user installs the packaging box 1 in the microwave oven as illustrated in FIG. 7 and heats the food F contained in the pouch 2 together with the packaging box 1.

  At the stage where the heating has not progressed until the pouch 2 deforms the main body part A1, as illustrated in FIG. 7, the main body part A1 and the lid part A2 are not deformed and remain in their original form. Therefore, the inclination of the pouch 2 is maintained in the initial state, in other words, the angle α (initial angle) at which the lid portion A2 in the original state supports the main body portion A1 in the original state.

  When heating proceeds in this state, steam is generated from the food F, and the internal pressure of the pouch 2 increases. Thereby, since the pouch 2 is sealed by the peripheral edge portion 21, the pouch 2 expands up and down in the height direction (the z-axis direction in FIG. 5 and the direction perpendicular to the surface of the pouch 2). When the pouch 2 is expanded, the front plate 11 side region and the back plate 14 side region of the main body A1 are pressed against the pouch 2. And according to expansion | swelling of the pouch 2, main-body part A1 will deform | transform gradually in the front board 11 side area | region and the backplate 14 side area | region. Further, since the two films constituting the pouch 2 are separated from each other due to the expansion of the pouch 2, the heat seal 221 constituting the steam port 22 is peeled off. Thereby, the vapor | steam generate | occur | produced from the foodstuff F is discharge | released outside from the through-hole 222 of the steam port 22.

  8 and 9 exemplify a state where the heating has progressed until the pouch 2 deforms the main body A1. 8 and 9, when the main body A1 is deformed in the front plate 11 side region and the back plate 14 side region, the inclination angle β of the pouch 2 held by the main body portion A1 is set to the initial angle α. Compared to That is, the main body A1 can be increased in inclination to hold the pouch 2 by being deformed in the height direction (see FIG. 3 and the like).

  In this regard, in the present embodiment, the horizontal lengths (w2, w3) of the fourth cut line 142 and the fifth cut line 143 are 10% or more of the horizontal length (w1 + w2 + w3) of the back plate 14. Formed as follows. As a result, the length of the hinge part 141 is adjusted, and the restraining force by the hinge part 141 is reduced, so that the deformation of the region on the back plate 14 side of the main body part A1 is facilitated, as illustrated in FIGS. In addition, it can be deformed to such an extent that the inclination for holding the pouch 2 is satisfactorily increased.

  Therefore, the packaging box 1 according to the present embodiment can increase the inclination of holding the pouch 2 in accordance with the expansion of the stored pouch 2. That is, the packaging box 1 reduces the inclination of the pouch when the heating is not progressing (initial state), thereby improving the heating efficiency of the food F inside. And as heating progresses, since the distance between the food F in the pouch 2 and the steam port 22 is increased by increasing the inclination of the pouch, the ejection of the food F can be prevented. Therefore, according to the packaging box 1 which concerns on this embodiment, it becomes possible to adjust the inclination | tilt angle of a pouch according to a heating state, and it becomes possible to implement | achieve ideal microwave heating.

  Moreover, in this embodiment, in order to acquire the effect mentioned above, it is comprised as follows. This point will be described with reference to FIG. As shown in the figure, in the present embodiment, the fourth cut line 142 and the fifth cut line 143 are formed in an arc shape that protrudes upward in the vertical direction of the back plate 14. And the hinge part 141 is located on the back plate 14 more than the position X1 where the fourth cut line 142 is connected to the second cut line 121 and the position X2 where the fifth cut line 143 is connected to the third cut line 131. It is formed so as to be positioned on the lower side in the vertical direction.

  Here, it is assumed that the basic space portion of the lid part A2 is a region surrounded by the front plate 11, the right side plate 12, the left side plate 13, and the back plate 14, and the upper plate 15. . When the lid A2 is bent at the basic space portion of the lid portion A2 as in the prior art, the lid portion A2 is located at the position h1 below the back plate 14 in the vertical direction, in other words, near the opening of the main body portion A1. The main body A1 is supported by.

  On the other hand, in the present embodiment, the lid portion A2 is further bent at the hinge portion at the position h2 in the vertical direction and supports the main body portion A1. Therefore, in the present embodiment, the lid A2 supports the main body A1 at a length h2 × 2 in the downward direction in the vertical direction, compared with the case where the lid A2 is bent at the basic space portion.

  Therefore, according to the present embodiment, the position where the main body A1 is supported by the lid A2 can be relatively lower in the vertical direction of the main body A1. As described above, the more the support is supported on the lower side in the longitudinal direction of the main body A1, the higher the inclination of the main body A1 that holds the pouch 2 can be made. Therefore, according to the present embodiment, it is possible to increase the amount of increase in the inclination that holds the pouch 2 against the downward deformation in the height direction of the region on the back plate 14 side of the main body A1.

  In addition, the fourth cut line 142 and the fifth cut line 143 have an arc shape that protrudes upward in the vertical direction of the back plate 14 as compared with the case where the fourth cut line 142 and the fifth cut line 143 are formed in a straight line. ing. Therefore, in the main body A1 according to this embodiment, the area covering the pouch 2 is widened on the back plate 14 side. As a result, it is possible to increase the probability that the food F or the like ejected from the steam port 22 is retained in the main body A1.

  Furthermore, since the 4th cut line 142 and the 5th cut line 143 are arc-shaped, the effect that the contact area of the backplate 14 of the main-body part A1 and the pouch 2 can be enlarged can also be acquired. Therefore, the main body portion A1 according to the present embodiment is easily affected by the deformation of the pouch 2, and is easily subjected to the deformation force downward in the height direction of the pouch 2. Therefore, it is possible to increase the amount of increase in the inclination that holds the pouch 2 against the deformation of the pouch 2.

  Here, as the length of the fourth cut line 142 and the fifth cut line 143 in the lateral direction becomes longer, the fourth cut line 142 and the fifth cut line 143 are compared with the case where the fourth cut line 142 and the fifth cut line 143 are formed linearly. The area where the main body portion A1 covers the pouch 2 becomes wider on the back plate 14 side when the 142 and the fifth cut lines 143 are formed in an arc shape. Therefore, the above-mentioned merit obtained by forming the 4th cut line 142 and the 5th cut line 143 in an arc shape becomes large, so that the transverse direction length of the 4th cut line 142 and the 5th cut line 143 becomes long.

  The length h1 in the vertical direction of the basic space portion of the lid A2 and the length h2 in the vertical direction from the space portion to the hinge portion 141 are appropriately designed according to the embodiment. For example, in order to prevent the pouch 2 from falling, at least in the initial state, the lid portion A2 does not support the main body portion A1 below the center of gravity of the main body portion A1 including the pouch 2 containing the food F. , H1 and h2 may be designed.

  Here, when the food F is a fluid, the food F tends to accumulate in the lower portion of the pouch 2 due to the inclination of the main body A1 as compared with the case where the food F is a solid. Therefore, when the food F is a fluid, the center of gravity of the main body portion A1 including the pouch 2 is more easily located in the lower vertical direction than when the food F is a solid.

  Therefore, when storing the pouch 2 that stores the fluid food F, the packaging according to this embodiment is made so that the length h2 is longer than when the pouch 2 that stores the solid food F is stored. Box 1 can be formed. When the food F is a fluid, there may be a problem that the food F is easily ejected from the steam port 22 of the pouch 2 as compared with the case where the food F is a solid. This problem can be solved by forming.

  Moreover, in this embodiment, the hinge part 141 is arrange | positioned near the center of the horizontal direction of the backplate 14, and has the some cutting part 144 arrange | positioned at predetermined intervals. As a result, it becomes possible to satisfactorily reduce the restraining force by the hinge part 141, so that the deformation of the region on the back plate 14 side of the main body part A1 becomes easy, and an increase in the inclination for holding the pouch 2 against the expansion of the pouch 2 is achieved. The amount can be increased.

§2 Modifications While the embodiment of the present invention has been described above, the above description is only an example of the present invention in all respects. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

<Incision shape at the hinge>
FIG. 10 illustrates a modification of the shape of the cutting portion 144 included in the hinge portion 141. As described above, the shape and number of the cutting portions 144 may be appropriately designed according to the embodiment. For example, as illustrated in FIG. 10, the cutting portion 144 near the center in the horizontal direction of the back plate 14 may have a T-shape on the upper side in the vertical direction of the back plate 14. Thus, by making a cut at the upper side in the vertical direction, the restraining force of the hinge part 141 against the deformation of the main body part A1 can be satisfactorily reduced.

  Examples of the present invention will be described below. However, the present invention is not limited to the following examples.

<Evaluation of the relationship between the length of the cut line on the back plate and the increase in the inclination of the pouch>
First, in order to investigate the relationship between the lateral length (w2, w3) of the fourth (5) score line and the increase in the inclination of the pouch, the lateral length (w2) of the fourth (5) score line , W3) The angle and height of the pouch 2 before and after heating were examined.

  Five types of packaging boxes 1 used in the examples were prepared from the box original plate 10 shown in FIG. The packaging box 1 according to this example was made of coated cardboard and card paper. The length of the front plate 11 (back plate 14) in the horizontal direction was 130 mm, and the length of the front plate 11 (back plate 14) in the vertical direction was 160 mm. Further, the length (h1) in the vertical direction of the basic space portion of the lid portion A2 was 20 mm, and the length (h2) between the space portion and the hinge portion 141 was 25 mm. Details of the packaging boxes according to Examples 1 to 5 are as shown in Table 1. Furthermore, the horizontal length of the pouch 2 stored in each packaging box 1 was 130 mm, and the vertical length of the pouch 2 was 165 mm. Pouch 2 contained curry as food F.

  Next, a comparative example as shown in FIG. 11 was prepared. FIG. 11 illustrates a state (box original plate 30) in which the packaging box 3 according to the comparative example is developed. The packaging box 3 according to the comparative example can be described in substantially the same manner as the packaging box 1 according to the embodiment. Reference numerals 30 to 34 and 37 in FIG. 11 correspond to reference numerals 10 to 14 and 17 in FIG. 3, respectively. Also, reference numerals 311, 321 to 323, 331 to 333, 341 to 344, 351, 352, 361, 362, and 371 in FIG. 11 are the reference numerals 111, 121 to 123, 131 to 133, 141 to 315, respectively. 144, 151, 152, 161, 162, and 171. Furthermore, reference signs wh1 to wh3, hh1, and hh2 in FIG. 11 correspond to reference signs w1 to w3, h1, and h2 in FIG. 3, respectively.

  However, the 4th cut line 342 and the 5th cut line 343 of the packaging box 3 which concern on a comparative example are formed in linear form unlike the packaging box 1 which concerns on an Example. Further, the width (wh1) of the hinge portion 341 is set to 114 mm. The horizontal lengths (wh2, wh3) of the fourth cut line 342 and the fifth cut line 343 are set to 8 mm. That is, the horizontal length (wh2) of the fourth cut line 342 and the horizontal length (wh3) of the fifth cut line 343 are equal to the horizontal length of the back plate 14 (wh1 + wh2 + wh3 = 130 mm). Set to 2%. Furthermore, the length (hh2) between the basic space portion of the lid portion and the hinge portion 341 was 9 mm.

  And the pouch 2 is installed in the packaging box 1 which concerns on Examples 1-5 and a comparative example so that it may be illustrated by FIG. 7, and it is 1 minute 40 with a microwave oven (Mitsubishi Electric Corporation, model number: RO-LE25, 600W). After heating for 2 seconds, the angle and height of the pouch 2 before and after heating were confirmed. The results are shown in Table 1 below. The “steaming time” indicates the time during which steam was ejected from the steam port 22 of the pouch 2.

  From the results, when Examples 1 to 5 are compared with the comparative example, the lateral length (w2) of the fourth score line 142 and the lateral length (w3) of the fifth score line 143 are determined as the back plate 14. It was shown that the inclination for holding the pouch 2 was improved satisfactorily by forming the length to be 10% or more of the horizontal length (w1 + w2 + w3). In this case, the width (w1) of the hinge portion 141 is formed to be 80% or less of the lateral length (w1 + w2 + w3) of the back plate 14.

  In addition, compared with Example 1, in Examples 2-5, the comparatively stable height of the pouch 2 was able to be obtained at the time of steaming. Therefore, in order to further improve the inclination for holding the pouch 2, the lateral length (w 2) of the fourth cut line 142 and the lateral length (w 3) of the fifth cut line 143 are set as follows. 14 may be set to be 15% or more of the horizontal length (w1 + w2 + w3). In this case, the width (w1) of the hinge portion 141 may be formed to be 70% or less of the lateral length (w1 + w2 + w3) of the back plate 14.

  Moreover, when Examples 1-5 are compared with a comparative example, if the width (w1) of the hinge part 141 shall be 20 mm or less, the backplate 14 will be torn along the hinge part 141 when opening the packaging box 1. The number of cases where the main body A1 and the lid A2 are separated increases. Therefore, it was found that the width (w1) of the hinge part 141 is preferably formed to be 15% or more of the lateral length (w1 + w2 + w3) of the back plate 14. In this case, the sum (w2 + w3) of the lateral length of the fourth score line 142 and the lateral length of the fifth score line 143 is 85% or less of the lateral length (w1 + w2 + w3) of the back plate 14. In addition, the fourth score line 142 and the fifth score line 143 may be formed.

  In addition, as illustrated in FIG. 9, the deformation in the height direction of the main body A1 caused by the expansion of the pouch 2 is likely to occur near the center in the horizontal direction of the main body A1. Here, as for the packaging box 1 which concerns on this embodiment, the inclination of the pouch 2 becomes high because the inclination in which lid part A2 supports main-body part A1 becomes high by the deformation | transformation of the height direction of main-body part A1. Therefore, in order to efficiently transmit the deformation in the height direction of the main body portion A1 to the change in the inclination of the pouch 2, the lid portion A2 supports the main body portion A1 at a position where the deformation in the height direction of the main body portion A1 is likely to occur. In other words, it is preferable that the hinge portion 141 is disposed near the center in the lateral direction of the main body portion A1. Therefore, the horizontal length (w2) of the fourth cut line 142 and the horizontal length (w3) of the fifth cut line 143 are 50% of the horizontal length (w1 + w2 + w3) of the back plate 14, respectively. You may form so that it may become less.

<Evaluation regarding the ejection of contents>
Next, it was examined whether or not the contents were ejected between the packaging box 1 of Example 6 in which the width (w1) of the hinge portion 141 was 45 mm and the packaging box 3 of the comparative example.

And the pouch 2 which changed the content in the packaging box 1 of Example 6 and the packaging box 3 of a comparative example, respectively is installed so that it may be illustrated in FIG. 750W) and tested whether each content was ejected. The results are shown in Table 2 below. Note that “scattering in the cabinet” indicates that the contents are scattered in the microwave oven. The term “pouch” in “spout” indicates that the contents spouted from the steam port have adhered to the portion around the steam port of the pouch. Further, the item “packaging box” indicates that the contents ejected from the steam port have adhered to the packaging box. The more the contents of the pouch are ejected from the steam outlet, the more easily the pouch is attached to the packaging box.

  From the result, when Example 6 is compared with the comparative example, the horizontal length (w2) of the fourth cut line 142 and the horizontal length (w3) of the fifth cut line 143 are determined by the horizontal direction of the back plate 14. When it was formed to be less than 10% of the length in the direction (w1 + w2 + w3) (Comparative Example 1), it was shown that the food F was likely to be ejected, and the inclination for holding the pouch 2 was not improved satisfactorily.

  Further, comparing Example 6 with the comparative example, the fourth cut line 142 and the fifth cut line 143 are compared with the case where the fourth cut line 142 and the fifth cut line 143 are formed in a straight line. It has been shown that the formation of an arc that is convex upward in the vertical direction of FIG.

  Here, in Table 1, it is shown that the height of the pouch at the time of heating becomes high, so that the width | variety (w1) of the hinge part 141 is short. On the other hand, when the width of the hinge part 141 is shortened, the strength of the hinge part 141 is reduced, and the back plate 14 is easily broken along the hinge part 141 when the packaging box 1 is opened.

  From this point, it was found from the test results shown in Table 2 that the packaging box 1 according to Example 6 can stably suppress the scattering of the food in a variety of foods. Therefore, for example, by forming the width (w1) of the hinge portion 141 within a range of 30% to 40% of the lateral length (w1 + w2 + w3) of the back plate 14, the strength of the hinge portion 141 is secured while being stable. In this way, it is possible to suppress the scattering of food.

  At this time, the sum (w2 + w3) of the horizontal length of the fourth cut line 142 and the horizontal length of the fifth cut line 143 is in the range of 60 to 70% of the horizontal length (w1 + w2 + w3) of the back plate 14. , The fourth score line 142 and the fifth score line 143 may be formed. Furthermore, in order to arrange the hinge portion 141 near the center in the lateral direction of the back plate 14, the lateral length (w2) of the fourth cut line 142 and the lateral length (w3) of the fifth cut line 143 are arranged. ) May be formed in a range of 30 to 35% of the length (w1 + w2 + w3) in the lateral direction of the back plate 14, for example.

DESCRIPTION OF SYMBOLS 1 ... Packaging box, 10 ... Box original plate, 100 ... Packaging
11 ... front plate, 111 ... first score line,
12 ... right side plate, 121 ... second cut line, 122, 123 ... flap,
13 ... Left side plate, 131 ... Third cut line, 132 · 133 ... Flap,
14 ... back plate, 141 ... hinge part, 142 ... fourth cut line, 143 ... fifth cut line,
144 ... cutting part,
15 ... upper surface plate, 151 ... first upper surface plate piece, 152 ... second upper surface plate piece,
16 ... bottom plate, 161 ... first bottom plate piece, 162 ... second bottom plate piece,
17 ... paste margin piece, 171 ... cut line for paste margin piece,
2 ... Pouch, 21 ... Peripheral part, 22 ... Steam port, 221 ... Heat seal, 222 ... Through-hole,
F ... Food,
A1 ... main body, A2 ... lid

Claims (5)

A flat packaging box for storing a pouch that has a steam port near the top and is heated in a microwave oven,
The packaging box
A front plate,
A right side plate located at the right end of the front plate in the lateral direction;
A left side plate located at the left end of the front plate in the lateral direction;
An upper surface plate located at the upper end in the longitudinal direction of the front plate;
A bottom plate located at the lower end in the longitudinal direction of the front plate;
A back plate facing the height direction of the front plate,
The front plate has a first cut line for opening the packaging box on the upper side in the vertical direction,
The right side plate has a second score line continuous with the first score line;
The left side plate has a third score line continuous with the first score line,
The back plate is
A hinge part;
A fourth cut line and a fifth cut line disposed at both ends of the hinge part,
The fourth score line is continuous with the second score line;
The fifth score line is continuous with the third score line;
The packaging box is divided into a main body part and a lid part by being opened along the first cut line, the second cut line, the third cut line, the fourth cut line, and the fifth cut line,
The main body holds the pouch when the pouch is heated in the microwave oven,
The lid portion is connected to the main body portion by the hinge portion in the back plate side region, and is bent along the hinge portion to come into contact with the back plate side region of the main body portion. Support the body,
The main body is heated in the microwave oven when the horizontal lengths of the fourth cut line and the fifth cut line are each 10% or more of the horizontal length of the back plate. When the pouch swells in the height direction, the pouch is configured to be deformed in the height direction, and by the deformation, the inclination for holding the pouch can be increased.
Packaging box. The fourth cut line and the fifth cut line are formed in an arc shape protruding upward in the vertical direction of the back plate,
The hinge portion is located on a lower side in the vertical direction of the back plate than a position where the fourth cut line connects to the second cut line and a position where the fifth cut line connects to the third cut line. Located in the
The packaging box according to claim 1. The hinge part is arranged near the center in the lateral direction of the back plate, and has a plurality of cutting parts arranged at predetermined intervals.
The packaging box according to claim 1 or 2. The length of the hinge part in the lateral direction is 15% or more of the lateral length of the back plate.
The packaging box of any one of Claim 1 to 3.   A box original plate for producing the packaging box according to any one of claims 1 to 4.