JP6860900B2 - Packaging container - Google Patents

Description

The present invention relates to a packaging container provided with a medium plate capable of containing foods and the like.

Katsudon, Oyakodon, and other bowls are made by placing ingredients on top of rice, but if the bowl is used as a bento, it may be left for a long time, and the juice of the ingredients will soak into the rice. In some cases, the rice was soaked and softened.
Therefore, when making a bowl into a bento, a container equipped with a middle plate may be used. For example, rice is stored in the container body, ingredients are stored in the middle plate, and the juice of the ingredients becomes cooked rice. It can prevent the rice from soaking in and softening the rice.

Examples of the container provided with such a middle plate include, for example, in Patent Document 1 below, a container body having a container-side flange portion whose outer peripheral edge is bent downward, and a container body from the upper surface to the side surface of the container-side flange portion. A flat shape consisting of a middle plate having a middle plate side flange portion on the outer peripheral edge, which is covered and has an inwardly projecting portion formed so as to be hooked on the lower edge of the container side flange portion, and a lid for closing the inner plate. In a circular food packaging container, by pulling each other outward along the radial direction, the side surface of the container side flange portion at the opposite position so as to disengage the middle plate side flange portion with the lower edge of the container side flange portion. A food packaging container characterized by a tongue-shaped knob extending from the lower edge is shown, which can be used without touching the container body, which is heated by heating with a microwave device. The lid and inner plate can be removed from the container body.

In Patent Document 2 below, in a packaging container composed of a lower container, a middle container and a lid molded from a synthetic resin material and the rims of each overlapping each other, a hanging portion is provided on the rim of the lower container and the middle container is provided. An upright portion and a hanging portion outside the upright portion are formed on the peripheral wall of the container so that the hanging portion of the inner container is externally fitted to the hanging portion of the lower container, and the lid is in close contact with the upright portion of the inner container. A packaging container is shown in which a possible hanging portion is formed and the hanging portion is fitted inside the upright portion of the inner container in a covered state, and the container is resistant to juice leakage. Moreover, it is easy to remove the lid.

The following Patent Document 3 describes a food packaging container for sale as a set including an upper container, a lower container, and a lid heat-molded from a synthetic resin sheet, and the lower container and the upper container have bottom portions, respectively. A side wall portion that rises upward from the outer edge of the bottom surface portion and a flange portion that extends outward from the upper end of the side wall portion, and the upper container is a container shallower than the lower container and enters the inside of the lower container. In this way, the upper part of the side wall of the lower container and the upper part of the side wall of the upper container are formed with a reverse taper fitting part having a reverse taper shape that expands downward, respectively, and the reverse taper of the lower container. When the reverse taper fitting part of the upper container is fitted inside the fitting part and is stacked, the area below the reverse taper fitting part of the side wall part of the upper container is the side wall of the lower container. Separated inward from the portion, the flange portion of the upper container is provided with a protruding portion protruding outward from the outer edge of the flange portion of the lower container, and the lid body is provided on the upper container without fitting with the lower container. By closing the opening of the upper container and releasing the mating state between the reverse taper fitting parts of the upper container and the lower container, the lid body and the upper container can be separated while maintaining the closed state. A food packaging container for sale as a set is shown, which is characterized by being integrally separable from the lower container, and this container is only one of the two types of food sold as a set. Can be easily processed such as cooking and storage in a microwave oven while being housed in a container with a lid.

Utility Model Registration No. 3157861 Utility Model Registration No. 3051376 Japanese Patent No. 5922274

When the containers of Patent Documents 1 and 2 are heated in a microwave oven, the foodstuffs contained in the container body and the foodstuffs stored in the inner plate are heated together, and both foodstuffs are heated under the same conditions. Therefore, it is not suitable for heating each ingredient at an appropriate temperature.

In the container of Patent Document 3, the upper container (middle plate) and the lid can be removed from the container body, and only the foodstuff in the upper container (middle plate) can be heated. However, when it is desired to heat the ingredients in the container body, it is inconvenient to heat them using a wrap film or the like.

Therefore, an object of the present invention is to provide a packaging container capable of appropriately heating each of the foodstuff in the inner plate and the foodstuff in the container body without using a wrap film or the like.

The packaging container according to the embodiment of the present invention has a container main body provided with a main body flange portion, an inner plate that is externally fitted to the container main body to close the storage portion of the container main body, and an inner plate that is internally fitted to the inner plate. The inner plate is provided with a lid that can be fitted inside the container body to close the container body, and the inner plate is outside from the upper end of the peripheral wall of the container. It has a middle plate flange part that projects toward the side, and the middle plate flange part has an engaging part that engages with the outer edge of the main body flange part and is externally fitted to the container body, and an engaging part that rises upward from the middle plate flange part and has an inner surface. It is characterized in that the fitting portion provided on the side is provided with a vertical wall portion into which the lid portion is internally fitted.

Since the lid of the above-mentioned packaging container can be fitted not only to the inner plate but also to the container body, the lid is fitted to the inner plate and warmed in a microwave oven, and then the lid is removed from the inner plate. The removed lid can be fitted to the container body and heated in a microwave oven, and each ingredient can be heated under appropriate conditions without using a wrap film or the like.
Further, since the lid portion can be internally fitted to each of the inner plate and the container body, it can be used as a packaging container even when the inner plate is not required, and the container can be used for various menus. For example, if there is "Chukadon" or "fried rice" in the menu, "Chukadon" can be used by storing rice in the container body and the middle plate by storing the rice, and in "fried rice", the container body can be used. It suffices to store the fried rice in the rice bowl and cover it, eliminating the need to prepare a special container for each menu, reducing the number of material management items and saving space in the backyard. Since the lid can be internally fitted to each of the inner plate and the container body, the lid is excellent in airtightness regardless of which one is closed, and the juice does not easily leak even when a juicy foodstuff is stored.

The packaging container of the above-described form may have a structure in which the middle plate is provided with a middle plate flange portion that rests on the main body flange portion and a standing wall portion that rises upward inside the middle plate flange portion.

By providing the standing wall portion, the lid portion can be fitted to the standing wall portion, so that the capacity of the accommodating portion of the inner plate can be increased. Further, since the inner plate flange portion is placed on the main body flange portion, the inner plate can be stably placed at a high position on the bottom surface of the inner plate, and the capacity of the container main body is not reduced. Therefore, with such a configuration, the capacity of both the container body and the inner plate can be increased, and the capacity of the food material in the entire packaging container can be increased.

The packaging container of the above-described form may include an inclined surface portion that is inclined from the upper end portion of the vertical wall portion toward the outer edge of the middle plate flange portion.

By doing so, for example, when the ingredients of the bowl are stored in the middle plate and the cooked rice is stored in the container body, when the ingredients of the middle plate are placed on the cooked rice of the container body, the ingredients of the middle plate are used. It can be slid and placed on the inclined surface, making it easier to place the ingredients on the cooked rice.

At least the lid of the packaging container of the above form can be made transparent or translucent.

By doing so, the contents can be seen from the outside when displayed at a store or the like, and the foodstuffs stored in the inner plate or the container body can be confirmed.

It is an exploded perspective view of the packaging container of one Embodiment of this invention. FIG. 5 is a partially enlarged end view showing a state in which a middle plate and a lid are fitted to a container body in the packaging container of FIG. 1. It is a perspective view of the container body of the packaging container of FIG. It is a perspective view of the inner plate of the packaging container of FIG. It is a perspective view which showed one modification of the lid part of the packaging container of FIG. It is a partially enlarged end view of the middle plate of the packaging container of FIG. 1 near the corner. FIG. 5 is a partially enlarged end view showing a state in which a lid portion is fitted to an inner plate in the packaging container of FIG. 1. FIG. 5 is a partially enlarged end view showing a state in which a lid portion is fitted to a container body in the packaging container of FIG. 1.

Hereinafter, an embodiment of the packaging container of the present invention will be described with reference to the drawings.

As shown in FIG. 1 or FIG. 2, the packaging container 1 according to the embodiment of the present invention includes a container body 2, a middle plate 3, and a lid 4, and the middle plate 3 is attached to the container body 2. The accommodating portion 21 can be closed by fitting, and the lid portion 4 can be fitted into the middle plate 3 to close the accommodating portion 31. Further, the lid portion 4 can be fitted to the container body 2.

In the packaging container 1, for example, the first food material can be stored in the storage portion 21 of the container body 2, and the second food material can be stored in the storage portion 31 of the middle plate 3. The first ingredient and the second ingredient may be the same, but different ones are preferable.
The first foodstuff is not particularly limited, but a so-called staple food foodstuff, specifically cooked rice, noodles, bread, or the like is preferable.
The second foodstuff is not particularly limited, but a so-called side dish, meat, fish, vegetables and the like are preferable.

For example, if the first ingredient is cooked rice such as white rice and the second ingredient is chicken or pork cutlet bound with eggs, the second ingredient is placed on top of the first ingredient when eating. It can be a bowl such as Oyakodon or Katsudon. Also, if the first ingredient is cooked rice such as white rice and the second ingredient is a rice cake with meat and vegetables bound together, the second ingredient is placed on top of the first ingredient when eating. Can be.

The packaging container 1 can be manufactured, for example, by thermoforming a synthetic resin sheet having a sheet thickness of 0.1 mm to 3 mm, preferably 0.2 mm to 2.0 mm. The container body 2, the inner plate 3, and the lid 4 may have different thicknesses.

The synthetic resin sheet is not particularly limited, but may be either a foamed resin sheet or a non-foamed resin sheet. For example, a polyolefin resin sheet such as a polyethylene resin sheet or a polypropylene resin sheet, a polystyrene resin sheet, or the like. Examples thereof include thermoplastic resin sheets such as polyester resin sheets such as polyethylene terephthalate resin sheets and modified polyethylene terephthalate resin sheets imparted with heat resistance. Among them, those that can withstand the heating of a microwave oven, for example, heat-resistant polystyrene-based resin sheets and polypropylene-based resin sheets are preferable.
Further, a laminated sheet can be used as the synthetic resin sheet, and examples of the laminated sheet include a laminated sheet in which a film is heat-laminated on a synthetic resin sheet, a laminated sheet by a coextrusion method, and a laminated sheet by an extrusion lamination method. Can be done.

Examples of the thermoforming include vacuum forming, compressed air forming, vacuum pressure forming, and thermoforming.

The packaging container 1 may be transparent, translucent, colored such as black or white, but the lid 4 is preferably transparent or translucent so that the inside can be visually recognized, and the inner plate 3 and the lid 4 are It is particularly preferable that both are transparent or translucent.

As shown in FIG. 1 or 2, the packaging container 1 has a square shape in a plan view, and the inner plate 3 is externally fitted to the container body 2 to cover the accommodating portion 21 of the container body 2, and the lid portion 4 covers the container body 2. It is internally fitted into the middle plate 3 so as to cover the accommodating portion 31 of the middle plate 3. Further, the lid portion 4 is also internally fitted to the container body 2 so as to cover the accommodating portion 21 of the container body 2.
The packaging container 1 has a square shape in a plan view in the present embodiment, but is not limited to this, and may have a circular shape in a plan view, a rectangular shape in a plan view, a hexagonal shape in a plan view, a fan shape in a plan view, or the like. You can also.

As shown in FIGS. 1 to 3, the container main body 2 is provided with a peripheral wall portion 23 extending upward from the edge portion of the rounded corner square bottom portion 22, and is partitioned by the bottom surface portion 22 and the peripheral wall portion 23. The part 21 is formed. The upper end of the peripheral wall portion 23 is used as an opening edge portion, and a main body flange portion 24 is formed so as to project laterally outward from the opening edge portion.
The peripheral wall portion 23 is formed so as to expand upward, and a fitting portion 25 is provided on the inner surface side of the peripheral wall portion 23 so as to be inclined inward over the entire circumference near the opening edge portion, and a lid is provided. The part 4 can be fitted.

In the plan view, the main body flange portion 24 is formed so that the R on the outer edge side near the corner portion is smaller than the R on the opening edge portion of the container main body 2 so that the vicinity of the corner portion is wider than the other portions. The middle plate 3 is made easy to put on.

As shown in FIGS. 1, 2, 2, 4 and the like, the middle plate 3 is provided with a peripheral wall portion 33 extending upward from the edge portion of the rounded corner square bottom surface portion 32, and is divided by the bottom surface portion 32 and the peripheral wall portion 33. The accommodating portion 31 is formed. The accommodating portion 31 has a shallower bottom than the accommodating portion 21 of the container body 2.
The peripheral wall portion 33 is formed so as to expand upward, and a countersunk flange portion 34 projecting outward is formed at the upper end portion of the peripheral wall portion 33.
The middle plate flange portion 34 is provided with a standing wall portion 35 by forming the inner side of the container substantially vertically, and the outer side of the container is formed substantially horizontally so as to be placed on the main body flange portion 24. is there.

A hanging lower surface portion 34a hanging along the outer edge of the main body flange portion 24 is formed on the outer edge of the middle plate flange portion 34, and is externally fitted to the container main body 2 by an engaging portion 34b formed at a predetermined position of the hanging lower surface portion 34a. I have made it possible.
The vertical wall portion 35 is formed in a wall shape surrounding the accommodating portion 31, and the upper end portion 35a is formed in a substantially horizontal plane shape. By forming the standing wall portion 35, the lid portion 4 can be fitted to the standing wall portion 35, so that the capacity of the accommodating portion 31 is not reduced. Further, if the vertical wall portion 35 is raised, the capacity of the accommodating portion 31 can be increased. Therefore, the height of the vertical wall portion 35 from the bottom surface portion 32 is preferably 5 mm to 100 mm, particularly preferably 10 mm to 40 mm.
On the inner surface side of the vertical wall portion 35, a fitting portion 36 that is inclined inward over the entire circumference around the opening edge portion is provided so that the lid portion 4 can be fitted.

As shown in FIG. 1 or 6, an inclined surface portion 37 can be formed on the middle plate flange portion 34 at an appropriate position. The inclined surface portion 37 is formed on the outside of the container of the vertical wall portion 35, and is inclined from the upper end portion 35a of the vertical wall portion 35 toward the outer edge of the middle plate flange portion 34. The inclined surface portion 37 is designed so that when the second food material stored in the storage unit 31 is placed on the first food material stored in the storage unit 21 of the container main body 2, it smoothly flows down from the middle plate 3.

In the present embodiment, the inclined surface portion 37 is formed at the corner of the middle plate 3, but the present invention is not limited to this, and the inclined surface portion 37 may be formed at any location such as near the middle of each side.
At the upper end portion 35a of the standing wall portion 35, a recess 35b in which the vicinity of the inclined surface portion 37 is recessed downward in a curved shape can be formed. The recess 35b makes it easier for the second food material to collect on the inclined surface portion 37 when the middle plate 3 is tilted. In the present embodiment, the recess 35b is recessed in a curved shape, but the present invention is not limited to this, and any shape such as a square recess may be used.

As shown in FIG. 4, air passages 38 extending in and out of the container are appropriately formed in the hanging lower surface portion 36 and the inner plate flange portion 34 so that the inside of the accommodating portion 21 of the container body 2 can be ventilated. There is. Further, at one of the corners of the middle plate 3, a knob portion 39 is formed so as to project outward from the lower end portion of the hanging lower surface portion 34a in the shape of a tongue piece.

As shown in FIG. 2, the lid portion 4 has a fitting portion 42 formed in a square groove shape downward on the outer edge of the top surface portion 41 having a square round corner, and the outer edge of the fitting portion 42 has a fitting portion 42. A lid flange portion 43 is formed so as to project laterally to the outside.
The top surface portion 41 is formed in a substantially horizontal plane shape, and a shift prevention portion 44 projecting upward in a cross-sectional angle shape is provided near the outer edges of the two opposing sides. The displacement prevention unit 44 can prevent the other packaging container 1 from moving by sandwiching the peripheral wall portion 23 of the container body 2 when the other packaging container 1 is placed on the top surface portion 41.

The fitting portion 42 has an inclined outer surface of the container so that it can be internally fitted into the fitting portion 36 of the inner plate 3 to cover the accommodating portion 31 of the inner plate 3. Further, the fitting portion 42 can be internally fitted to the fitting portion 25 of the container main body 2, and can also cover the accommodating portion 21 of the container main body 2.
The lid portion flange portion 43 projects outward horizontally at substantially the same height as the top surface portion 41, and when fitted to the middle plate 3, is placed on the upper end portion 35a of the standing wall portion 35. When the lid portion flange portion 43 is fitted to the container main body 2, the lid portion flange portion 43 is placed on the main body flange portion 24.

At each corner of the lid flange portion 43, a knob portion 45 that protrudes outward in a bifurcated shape (m shape) in a plan view is provided so as to be able to be gripped when the lid portion 4 is opened. is there.
As shown in FIG. 5, the top surface portion 41 of the lid portion 4 may be provided with a notch 46 or a hole portion 47 for allowing steam generated by heating a microwave oven or the like to escape. The notch 46 is U-shaped, but may be straight or V-shaped. Further, although the hole 47 has a circular shape, it may have an oval shape or a dot shape.

Hereinafter, an example of how to use the packaging container 1 will be described.
First, the first food material such as cooked rice is stored in the storage portion 21 of the container body 2. After that, the inner plate 3 is fitted to the container body 2. In this state, the second ingredient such as the ingredients of the bowl is stored in the storage portion 31 of the middle plate 3, the lid portion 4 is fitted, and as shown in FIG. 2, they are stacked in three stages and displayed at a store or the like. can do.

When eating the foodstuff contained in the packaging container 1, the knob portion 39 of the inner plate 3 is picked and lifted to remove the inner plate 3 and the lid portion 4 from the container main body 2 in a fitted state. In the state shown in FIG. 7, the inner plate 3 and the lid 4 can be placed in a microwave oven to heat the second foodstuff. After warming the second ingredient, the knob portion 44 of the lid portion 4 is picked, and the lid portion 4 is removed from the inner plate 3.
The lid portion 4 can be fitted to the container body 2 to cover the accommodating portion 21, and the container body 2 and the lid portion 4 can be placed in a microwave oven in the state shown in FIG. 8 to heat the first food material.

In this way, in the packaging container 1, the second food material is warmed in a microwave oven by fitting the lid portion 4 to the inner plate 3, and then the lid portion 4 is removed from the inner plate 3 and the removed lid portion 4 is removed. Can be fitted to the container body 2 and heated in a microwave oven, so that the food can be heated under appropriate conditions without being wrapped in a wrap film or the like. Further, since the airtightness can be ensured by the internal fitting, it is possible to prevent the first food material from drying due to the release of water when the first food material is heated in the microwave oven.

If the first ingredient is cooked rice and the second ingredient is rice bowl, warm each of them and place the second ingredient in the middle plate 3 on the first ingredient in the container body 2. Can be. At this time, if the middle plate 3 is tilted so that the second food material flows down on the inclined surface portion 37, the second food material can be smoothly placed on the first food material housed in the container body 2. ..

By providing the inner plate 3 with the vertical wall portion 35, the packaging container 1 does not reduce the capacity of the accommodating portion 31 of the inner plate 3. Further, the inner plate 3 is externally fitted to the container main body 2, and the inner plate flange portion 34 is placed on the main body flange portion 24, so that the inner plate 3 is fitted to the inner plate main body 3 as compared with the case where the inner plate 3 is internally fitted. Since it is stably placed on 2, the position of the bottom surface portion 32 of the inner plate 3 can be kept high, and the storage capacity of the storage portion 21 of the container body 2 is not reduced.

The configuration of the above embodiment is not mentioned as limiting the present invention, and can be changed as long as the technical object is common, and the present invention includes such a change.

1 Packaging container 2 Container body 21 Storage part 22 Bottom part 23 Circumferential wall part 24 Main body Flange part 25 Fitting part 3 Middle plate 31 Storage part 32 Bottom part 33 Circumferential wall part 34 Medium plate Flange part 34a Hanging bottom part 34b Engaging part 35 Standing wall Part 35a Upper end part 35b Recessed part 36 Fitting part 37 Inclined surface part 38 Ventilation path 39 Grip part 4 Lid part 41 Top surface part 42 Fitting part 43 Lid part Flange part 44 Misalignment prevention part 45 Knob part 46 Notch 47 Hole part

Claims (3)

A container body having a main body flange portion, an inner plate that is externally fitted to the container body to close the container body accommodating portion, and an inner plate that is internally fitted to the inner plate to close the inner plate accommodating portion. It is equipped with a lid that fits inside the container body and can also close the storage part of the container body.
The inner plate has a middle plate flange portion that projects outward from the upper end portion of the peripheral wall portion of the accommodating portion, and is engaged with the inner plate flange portion by engaging with the outer edge of the main body flange portion and externally fitting to the container body. A packaging container provided with a joint portion and a vertical wall portion that rises upward from the flange portion of the inner plate and the lid portion internally fits into the fitting portion provided on the inner surface side. The packaging container according to claim 1 , further comprising an inclined surface portion that is inclined from the upper end portion of the standing wall portion toward the outer edge of the middle plate flange portion. The packaging container according to claim 1 or 2 , wherein at least the lid is transparent or translucent.

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