JP6731737B2 - Packaging containers and individual meal packages - Google Patents

Description

The present invention relates to a packaging container for food and the like, and more particularly to a packaging container suitable for steam heating an object to be contained. The present invention also relates to an individual meal package using such a packaging container.

In recent years, with the spread of microwave oven devices, it has become common as one aspect of eating habits to heat a chilled or frozen cooked food together with its packaging container to make it edible. .. In addition, after heating the chilled or frozen cooked food to make it edible, the packaging container itself is used for the purpose of eliminating the troublesome operation of transferring the food from the packaging container to the tableware. It has also been proposed to have a tableware form.

For example, Patent Document 1 relates to an improved technique of a packaging container for food that can be heated in a microwave oven, and a cooked ingredient that is placed on the cooked rice and a container body that stores cooked rice and that is inserted into the opening of the container body. In a packaging container provided with an inner plate containing a material and a lid provided on the opening of the container body so as to cover the inner plate, a notched vapor lead-out portion is formed on the peripheral edge of the inner plate. At the same time, it is described that steam flow passages corresponding to the steam outlets are formed at positions of the lid and the inner plate facing each other. In the packaging container having such a configuration, when the microwave is heated in a state where the rice is contained in the container body and the ingredients are contained in the inner plate, the steam generated from the rice by the heating is circulated from the steam outlet of the inner plate. It is designed to be introduced into the ingredients in the inner plate via the passage.

Further, in Patent Document 2, a microwave permeable container body having water stored at the bottom, and a microwave for accommodating foods, which is internally fitted to the container body in a state where the bottom surface is floated and has a steam passage hole in the bottom surface In a steaming container for microwave oven provided with a non-permeable inner container and a microwave impermeable lid for closing the inner container, a hole through which both steam and microwaves can pass through in a bottom plate portion of the inner container. And a microwave adjusting plate is provided on the bottom plate so as to be rotatable around the rotation center axis along the bottom plate. According to the steaming container for a microwave oven having such a configuration, by appropriately rotating the microwave adjusting plate, it is possible to freely select cooking with only steam heating or cooking with both steam heating and microwave heating. It is said that.

Further, in Patent Document 3, as a container for cooking frozen noodles in a microwave oven, a first container capable of storing noodle soup of frozen noodles to be cooked or water for thawing it, and the first container A second container that is stored inside the container and that stores frozen noodles, and steam generated from inside the first container when heated in a microwave oven over the entire bottom wall of the second container. A container is described in which a number of permeable openings are formed.

Utility model registration No. 3159788 JP-A-6-217880 JP, 2006-51088, A

The container described in Patent Documents 1 and 2 has its inner space divided into a plurality of compartments, and one of the compartments contains an object to be heated (white rice, water, etc.) that generates steam by microwave heating of a microwave oven. , Is configured to accommodate other objects to be heated (such as ingredients) in other compartments, and steam generated from the objects to be heated such as rice when the whole container is microwave-heated to other compartments. No. 4, but not for introducing the vapor existing outside the container. Further, the microwave steaming container described in Patent Document 2 is not expected to be used as tableware after microwave cooking of the contents, and after microwave cooking, an operation of transferring the contents to tableware is required. , There is room for improvement in handleability after cooking.

Further, in the container described in Patent Document 3, since a large number of openings for vapor permeation are formed in the entire bottom wall of the first container that stores the frozen noodles that are the objects to be heated, the frozen noodles are provided together with the container. After microwave heating, the first container cannot be used as tableware for noodles. This is because if the noodles stored in the first container are directly coated with noodle soup, sauce or the like, they will flow out from the opening of the bottom wall of the first container. That is, the container described in Patent Document 3 is only for heating and cooking, and it is necessary to separately transfer the noodles in the container to the tableware after heating in the microwave oven. However, there is room for improvement in terms of handleability after heating.

An object of the present invention is to provide a packaging container and an individual meal package that can efficiently heat an object to be stored by a heating device having a steam heating function and are excellent in handleability.

The present invention relates to a packaging container comprising a container body having an upper opening and a lid body covering the upper opening, wherein the container body comprises a bottom wall portion forming a mounting surface of an object to be contained and the container. It has a side wall part standing upright from the placement surface, and has a storage part for the contained object, and a steam flow path arranged laterally outside the storage part, wherein the steam flow path is lateral to the storage part. A vent hole for steam ventilation is provided at an outer position that extends along the side wall portion from the bottom wall portion side toward the lid body side, and is provided at one end of the vapor flow path opposite to the lid body side. Is communicated with the outside of the container main body through the container body at the upper opening position covered with the lid body, and the steam flowing in from the ventilation hole passes through the vapor passage through the lid body. The packaging container is configured to flow toward the inside of the container and be supplied into the accommodation portion through the upper opening.

Further, the present invention is an individual food package comprising a food to be cooked, a container body containing the food and having an upper opening, and a lid body covering the upper opening, wherein the container body is A bottom wall portion that forms a placement surface for the food product and a side wall portion that stands upright from the placement surface, and a storage portion for the food product and a steam flow path that is disposed laterally outward of the storage portion. The steam flow path extends laterally outwardly of the accommodating portion along the side wall portion from the bottom wall side toward the lid side, and the steam flow path is closer to the bottom wall side. Through the ventilation hole provided at one end of the container for communicating with the outside of the container body, and at the upper opening position covered by the lid, communicates with the accommodating portion, The individual steam wrapping body is configured such that the steam that has flowed in flows toward the lid body through the steam flow path and is supplied into the housing portion through the upper opening.

ADVANTAGE OF THE INVENTION According to this invention, the to-be-contained object can be efficiently heated by the heating apparatus provided with the steam heating function, and also the packaging container and individual meal package which are excellent in handleability are provided.
For example, when the contained object is a chilled or frozen cooked food, the packaging container of the present invention constitutes the "individual food package" together with the cooked food, and the individual food package is excellent in handling, After heating with a heating device such as a steamer, "food that can be eaten is placed on tableware", so it is possible to eat immediately without the troublesome work of transferring the heated food to tableware. it can. Further, in the packaging container of the present invention, the accommodation portion for accommodating the object is not provided with the vent hole communicating with the outside, and the accommodation portion has a high leak-proof function. Even when water is generated or an outflow liquid (drip liquid) is generated from the contained object in the accommodating portion, it is difficult for those liquids to leak out of the packaging container. Therefore, the packaging container of the present invention is easy to handle after heating. Is also excellent. Further, for example, the packaging container of the present invention constituting the individual food package, that is, the constituent members other than the food that is the object to be contained in the individual food package, the purpose is to use up the food in one use, single use In the case of a container, after the food in the individual meal package is eaten, the packaging container may be discarded, and heating from a heating device to cleaning up after eating can be simply and hygienically performed.

FIG. 1 is a top view schematically showing an embodiment of the packaging container of the present invention with a lid virtually seen through. FIG. 2 is a cross-sectional view schematically showing a cross section taken along the line I-I of FIG. 1 in a state where an object is contained in the container body. FIG. 3 is a top view (corresponding to FIG. 1) schematically showing another embodiment of the packaging container of the present invention with the lid virtually seen through. FIG. 4 is a sectional view schematically showing a section taken along line II-II of FIG. 5: is sectional drawing which shows the III-III sectional view taken on the line of FIG. 3 typically. FIG. 6 is a top view (corresponding to FIG. 1) schematically showing still another embodiment of the packaging container of the present invention by virtually seeing through the lid. 7: is sectional drawing which shows the IV-IV sectional view taken on the line of FIG. 6 typically.

The present invention will be described below based on its preferred embodiments with reference to the drawings. 1 and 2 show a first embodiment of a packaging container (single meal package) of the present invention. The packaging container 1A of the first embodiment functions as a "container" for containing an object that requires steam heating, and also functions as a "packing" for the heated contained object after steam heating, and the heated contained object. in which the can contribute to the improvement of handling property, comprising a container body 2 a having an upper opening 20, and a lid 3 for covering an upper opening 20. Packaging container 1A, as will be described later, is introduced from the outside of the container body 2 A vapor therein, the introduced steam, heated contained goods F directly against the inside of the contained object F of the container body 2 A The arrow indicated by the symbol V in FIG. 2 indicates the flow of steam. A typical example of the contained object F is food.

The container main body 2A has a storage portion 21 for the storage object F and a vapor flow path 22 arranged laterally outward (horizontal outward) of the storage portion 21. A housing portion 21 and the steam channel 22, as shown in FIG. 2, at least the container body 2 A bottom side of the (opposite to the top opening 20), each separate spaced divided horizontally by the groove 23 and that although the upper side of the container main body 2 a, in the vicinity of the lid 3 which more specifically covers the upper opening 20, the not separated separated, the interior space of the container body 2 a (top opening 20) To share. That is, the upper opening of the container body 2 A 20 is configured to include an upper opening of the upper opening and the steam channel 22 of the housing portion 21.

The accommodating portion 21 has a bottom wall portion 21U that forms a mounting surface of the object F to be accommodated, and a side wall portion 21S that stands up from the mounting surface, that is, the upper surface of the bottom wall portion 21U. The bottom wall portion 21U has a circular shape in a top view (plan view) as shown in FIG. 1, and the side wall is formed so as to surround the bottom wall portion 21U over the entire periphery of the bottom wall portion 21U having a circular shape in plan view. The parts 21S are connected. The housed object F is housed in the internal space defined by the bottom wall portion 21U and the side wall portion 21S.

As shown in FIG. 1, the vapor flow path 22 is arranged so as to be close to and surround the accommodating portion 21 having a circular shape in plan view. That is, the steam flow path 22 has an annular shape, and the housing portion 21 is arranged in a region surrounded by the annular steam flow path 22. The vapor flow path 22 has a bottom wall portion 22U, an inner side wall portion 22S1 and an outer side wall portion 22S2 rising from the peripheral edge of the bottom wall portion 22U, and an interior defined by these wall portions 22U, 22S1, 22S2. The space functions as a steam flow path. Bottom wall 22U of the steam channel 22, together with the bottom wall 21U of the housing portion 21, forms the bottom of the container body 2 A (package 1A). The inner wall portion 22S1 is arranged at a position relatively close to the housing portion 21, and the outer wall portion 22S2 is arranged at a position relatively far from the housing portion 21.

As shown in FIG. 2, between the side wall portion 21S of the housing portion 21 and the inner side wall portion 22S1 of the steam flow path 22, there is a groove 23 that horizontally separates the storage portion 21 and the steam flow path 22. ing. The groove 23 is a portion in which the bottom portion of the container body 2A (a portion located on the side opposite to the upper opening 20) is recessed toward the upper opening 20 side, and the groove 23 is formed over the entire circumference of the accommodation portion 21 having a circular shape in plan view. It is continuous to surround. The width of the groove 23, that is, the distance between the side wall portion 21S and the inner side wall portion 22S1 is preferably as short as possible. If the width of the groove 23 is too large, the distance F between the object F to be accommodated in the accommodation portion 21 and the steam passing through the steam flow path 22 located laterally outside of the groove 23 becomes long, so that the object F to be accommodated by the steam F is increased. This is because the heating effect may be diminished, and the accommodation capacity may be reduced because the proportion of the accommodation portion 21 in the entire container body 2A is reduced.

As shown in FIG. 2, the steam flow path 22 has a lateral outer position of the accommodating part 21 along the side wall part 21S from the bottom wall part 21U side toward the lid body 3 side, that is, from the bottom part side to the upper opening. It extends toward the 20 side. Further, the steam flow path 22 is connected to the outside of the container main body 2A through a vent hole 24 for steam ventilation, which is provided at one end on the bottom side of the steam flow path 22 opposite to the lid 3 side. It communicates with the accommodating portion 21 at the position of the upper opening 20 covered with the lid 3.

As shown in FIG. 2, the ventilation hole 24 is a through hole that penetrates the bottom wall portion 22U of the vapor flow path 22 in the thickness direction. In the packaging container 1A, as shown in FIG. 1, a plurality of (four) vent holes 24 having an arc shape in plan view are intermittently arranged at predetermined intervals in the circumferential direction of the bottom wall portion 22U which is annular in plan view. There is. More specifically, as shown in FIG. 1, in a plan view of the container body 2A, a first imaginary straight line Lx that bisects the container body 2A in the horizontal direction and extends in the vertical direction and the container body 2A in the vertical direction is bisected. Then, when the second virtual straight line Ly extending in the lateral direction is drawn, the vent holes 24 are arranged in each of the four regions of the container body 2A divided by the two virtual straight lines Lx, Ly. Vent holes 24 serving as steam inlets are evenly arranged around the housing portion 21 that houses the object F to be stored. That is, the container body 2A is formed symmetrically with respect to the virtual straight lines Lx and Ly.

As shown in FIG. 2, the lid 3 is arranged to cover the upper opening 20 of the container body 2A. A flange portion 25 is projectingly formed on the upper end portion of the outer wall portion 22S2 of the vapor flow path 22 that constitutes the container body 2A, and the lid body 3 is supported from below by the flange portion 25 of the container body 2A. .. The flange portion 25 horizontally projects outward from the upper end portion of the outer wall portion 22S2 in the horizontal direction and surrounds the upper opening 20 of the container body 2A in a top view of the container body 2A as shown in FIG. So that it is continuous. The lid body 3 is configured to slightly extend laterally outward from the peripheral edge of the flange portion 25 when the lid body 3 is arranged so as to cover the entire upper opening 20, and the extending portion of the lid body 3 is formed by the flange portion. By bringing the lid 3 into contact with the peripheral edge of the container 25, the lid 3 can be detachably attached to the container body 2A.

As the material of the container body 2A and the lid body 3, those having vapor impermeability and heat resistance capable of withstanding heat treatment such as microwave heating are preferable. For example, various synthetic resins such as polyethylene and polypropylene are used. You can As the lid body 3, for example, a resin plate-shaped member such as a fitting lid that can be engaged with the upper end portion (flange portion 25) of the container body 2A, or a resin film such as a packaging wrap can be used.

When the packaging container 1A having the above configuration is used, as shown in FIG. 2, steam heating is performed with the object F to be housed in the housing part 21 of the container body 2A and the lid 3 attached. The packaging container 1A is steam-heated using a heating device (not shown) having a function. Such a heating device is, for example, a heating device capable of heating an object by using microwaves, Joule heat, or the like in addition to steam, and as a specific example, a cooking device that heats food with steam and microwaves. Examples thereof include a microwave oven, a microwave oven, a thawing device, and the like. For example, when the object F is food, the packaging container 1A is housed in a microwave oven with a steam heating function, and the microwave oven is operated according to a conventional method to perform both microwave heating and steam heating. I'm fine. As shown by the arrow V in FIG. 2, the steam in the microwave oven flows into the steam flow path 22 through the ventilation hole 24 and flows through the steam flow path 22 toward the lid 3 (upper opening 20). , And is supplied into the accommodation portion 21 through the upper opening 20. In this way, the object F to be accommodated in the accommodation section 21 is heated by steam.

In addition, when steaming the packaging container 1A in a refrigerator of a heating device such as a microwave oven, a mounting table (not shown) having vapor permeability is provided for the purpose of smooth introduction of steam from the ventilation holes 24. It is also possible to place the inside of the container in the refrigerator and heat the steam with the packaging container 1A placed on the placing table. The mounting table, for example, is configured to include a flat plate-shaped ceiling plate having vapor permeability, and a plurality of legs that support the ceiling plate from below, and a known table-shaped one may be mentioned. The upper surface of the ceiling plate serves as the mounting surface of the packaging container 1A. When the mounting table is used, a predetermined space is formed below the ceiling plate, and the vapor existing in the space passes through the ceiling plate and flows into the vapor passage 22 from the vent hole 24 of the container body 2A. You can

As described above, in the packaging container 1A, the steam flow path 22 is arranged laterally outside the housing portion 21 so as to surround the housing portion 21, and the steam for heating the contained object F in the housing portion 21 is provided. Is supplied to the accommodation part 21 while diffusing so as to surround the accommodation part 21 while flowing from the lower side to the upper side through the vapor flow path 22, and thus the contained object F in the accommodation part 21. Can be indirectly heated by steam from its side through the side wall portion 21S and the like, and can be directly heated by directly applying the steam to the contained object, and therefore the contained object F can be efficiently heated. it can. Further, in the packaging container 1A, as described above, as shown in FIG. 1, a plurality of (four) vent holes 24 serving as steam inlets are evenly arranged around the accommodation portion 21 for accommodating the accommodation object F. As a result, the container bodies 2A are scattered, and the container bodies 2A are formed symmetrically with respect to the virtual straight lines Lx and Ly. Therefore, the object F can be efficiently heated. The amount of steam introduced into the packaging container 1A may be appropriately adjusted according to the type, size, and application of the object F to be stored. The amount of steam introduced into the packaging container 1A can be adjusted by the opening area of the ventilation holes 24, the opening ratio, and the like.

Further, in the packaging container 1A, the vent hole 24 communicating with the outside is provided in the vapor flow path 22 that exists independently of the accommodation portion 21 that accommodates the object F, and is provided in the accommodation portion 21. Therefore, for example, when the object F is a frozen food, the liquid such as water that has been heated and flowed out of the object F remains in the container 21 and leaks to the outside of the packaging container 1A. Absent. The point that "the liquid does not leak out of the housing portion 21" can give the packaging container 1A a good handling property after heating. That is, the packaging container 1A not only functions as a container for heating the contained object F, but after heating the contained object F, as a tableware, a packaging container, etc. used for eating the contained object F. Can work. Therefore, the packaging container 1A is excellent not only in heating efficiency but also in handleability after heating.

When the to-be-accommodated object F is a "food F that is an object to be cooked", that is, a food F that requires cooking in order to eat, an individual meal package 10 including the food F and the packaging container 1A can be formed. .. This individual meal package 10 can efficiently heat the food F with a heating device having a steam heating function due to the action and effect of the packaging container 1A described above, and is excellent in handleability.

The individual meal package 10 includes a food F that is cooked and eaten, and a packaging container 1A that contains and packages the food, and is a commercial package. The individual food package 10 is in a form that can be marketed as a single unit, and can be arranged in the store as it is and can be handed to general consumers. Taking a mode in which a general consumer purchases the individual food package 10 at a store as an example, the individual food package 10 purchased at the store can be refrigerated or frozen as it is, and provided and eaten. In this case, the individual food package 10 may be heated and cooked as it is by a heating device such as a steamer, and the cooked food F is not transferred to another eating/serving container such as a separate plate, but the packaging container 1A. It can be provided and eaten as it is housed in. The packaging container 1A can also be discarded after eating the food F. Therefore, by using the individual meal package 10, it is possible to easily and hygienically perform food preparation, provision, and eating, and, for example, a department without a dedicated kitchen in a store (for example, around a supermarket cash register). ) Etc. can be cooked. The individual meal package 10 can be used as a so-called “meal meal” at home, mainly for cooking at a store.

The type of the food F contained in the individual meal package 10 is not particularly limited, and examples thereof include noodles such as pasta, udon, buckwheat, and Chinese noodles, as well as cooked rice, breads, and steamed foods. The food F may be configured to include main ingredients such as noodles and rice, as well as side ingredients and side dishes eaten with the main ingredients, such as sauces, ingredients, and toppings. The state of the food F is not particularly limited, and may be raw (non-frozen, non-heated state), refrigerated or frozen.

3 to 7 show another embodiment of the packaging container of the present invention. Regarding other embodiments to be described later, constituent parts different from those of the packaging container 1A of the above embodiment will be mainly described, and similar constituent parts will be denoted by the same reference numerals and description thereof will be omitted. The description of the packaging container 1A is appropriately applied to components that are not particularly described.

3 to 5 show a packaging container 1B which is a second embodiment of the packaging container of the present invention. The container body 2B in the packaging container 1B is configured to include an outer container 4 having an upper opening 40 and an inner container 5 inserted into the upper opening 40 and detachably mounted in the outer container 4. The upper opening 40 of the outer container 4 is also the upper opening of the container body 2A.

In the container body 2</b>B, the accommodation portion 21 for the object to be accommodated (not shown) includes the inner container 5. That is, the inner container 5 has the same configuration as the housing portion 21 in the packaging container 1A described above, and specifically forms a mounting surface of the object to be housed and is viewed from above (plan view) as shown in FIG. In, a bottom wall portion 21U having a circular shape and a side wall portion 21S standing upright from the mounting surface are provided.

The outer container 4 has a bottom wall portion 4U that is circular in plan view and forms a bottom portion of the container body 2B (packaging container 1B), and a side wall portion 4S that rises from the peripheral edge of the bottom wall portion 4U. The internal space defined by 4U and 4S functions as a housing portion for the inner container 5. A vent hole 24 is formed in the central portion of the bottom wall portion 4U of the outer container 4 in the plane direction so as to penetrate the bottom wall portion 4U in the thickness direction. The vent hole 24 has a circular shape in plan view like the bottom wall portion 21U of the inner container 5, and the center of the vent hole 24 in plan view is at the same position as the center of the bottom wall portion 21U in plan view. On the other hand, as shown in FIGS. 4 and 5, the ventilation hole 24 has a smaller diameter (maximum width) than the bottom wall portion 21U, and therefore the packaging container 1B is viewed from the bottom side (the side opposite to the lid body 3). In this case, only a part (center part) of the bottom wall portion 21U of the inner container 5 is visible through the ventilation hole 24, and the remaining part (peripheral part) of the bottom wall portion 21U is the bottom wall of the outer container 4. It is in a state of being invisible because it is covered by the portion 4U.

As shown in FIGS. 3 to 5, in a state where the inner container 5 (accommodation portion 21) is mounted inside the outer container 4, the inner container 5 is located above the bottom portion (bottom wall portion 4U) of the outer container 4. And is supported by the outer container 4. More specifically, a flange portion 21F is formed so as to project from the upper end of the side wall portion 21S of the inner container 5, and a step provided on the inner surface of the upper portion (near the lid) of the side wall portion 4S of the outer container 4 is formed. By mounting the inner container 5 in the outer container 4 by bringing the flange portion 21F of the inner container 5 into contact with the portion 43, the inner container 5 can be supported at a position above the bottom wall portion 4U of the outer container 4. Has been done. Then, in a state in which the inner container 5 is supported at a position above the bottom wall portion 4U of the outer container 4, as shown in FIGS. 4 and 5, the bottom wall portion 21U of the inner container 5 and the bottom of the outer container 4 are Where the lower gap 41 is generated between the wall 4U and the wall 4U, the lower gap 41 can function as the vapor flow path 22. In addition the state where the side wall portion 4S forming the inner surface of the outer container 4, between the side wall portion 21S forming the outer surface of the inner container 5, the side clearance 4 2 so as to surround the inner container 5 occurs The side gap 42 can also function as the vapor passage 22. That is, the vapor flow path 22 in the packaging container 1B is configured to include the lower clearance 41 and the side clearance 42, and has a substantially L shape in a cross sectional view as shown in FIGS. 4 and 5.

Further, as shown in FIG. 3, the upper opening 40 of the outer container 4 and the upper part (the side opposite to the bottom part) of the inner container 5 have different contour shapes (shapes in a top view). That is, the contour shape of the upper opening 40 of the outer container 4 is a quadrangular shape with rounded corners (substantially quadrangular shape), while the flange portion 21F that forms the contour shape of the upper portion of the inner container 5 is viewed from above. In, an octagonal shape is formed as shown in FIG. Therefore, in a state where the inner container 5 is mounted in the outer container 4, the peripheral portion of the flange portion 21F of the inner container 5 partially contacts the step portion 43 of the outer container 4 as shown in FIGS. In contact with each other, a part of the flange portion 21F does not reach the step portion 43 and remains at an intermediate position between the side wall portion 21S of the inner container 5 and the side wall portion 4S of the outer container 4. That is, when the inner container 5 is inserted into the upper opening 40 of the outer container 4 and attached to the outer container 4, a part of the peripheral portion of the upper opening 40 is not covered with the inner container 5 (flange portion 21F). The exposed portion 40E is generated. As shown in FIG. 3, there are four upper opening exposed portions 40E formed at each of the four corners of the upper opening 40 of the outer container 4 having a substantially quadrangular shape in plan view. The upper opening exposed portion 40E functions as a part of the vapor passage 22 as described later.

Then, as shown in FIGS. 3 to 5, in a state in which the inner container 5 (accommodation portion 21) is mounted inside the outer container 4, the inner surface (side wall portion) of the outer container 4 at the lateral outer position of the inner container 5 is shown. 4S) and the outer surface of the inner container 5 (side wall portion 21S), a vapor flow path 22 is formed so as to surround the inner container 5. The vapor passage 22 in the packaging container 1B is configured to include the gap 41 and a side gap 43 formed between the inner surface of the outer container 4 and the outer surface of the inner container 5, and the bottom wall of the outer container 4 is formed. The vent hole 24 formed of a through hole provided in the portion 4U functions as a steam inlet, and the upper opening exposed portion 40E functions as a steam outlet.

The packaging container 1B having the above configuration can be used in the same manner as the packaging container 1A described above. In the packaging container 1B, when the inner container 5 is mounted inside the outer container 4 as shown in FIGS. 3 to 5, the vapor existing outside the packaging container 1B is located below the inner container 5 (accommodation portion 21). Flowing into the vapor flow path 22 through the ventilation holes 24, sequentially passing through the lower gap 41 and the side gap 42, flowing toward the lid body 3, and diffusing so as to surround the inner container 5, and the upper opening exposed portion 40E. And is supplied to the inside of the inner container 5, that is, the containing portion 21. Further, in the packaging container 1B, as shown in FIG. 3, a plurality (four) of upper opening exposed portions 40E serving as steam outlets are evenly arranged around the inner container 5 (accommodation portion 21) for accommodating an object. Since the container main bodies 2B are formed symmetrically with respect to the virtual straight lines Lx and Ly as a reference, the contained objects can be efficiently heated. The packaging container 1B has the same effect as the packaging container 1A.

6 and 7 show a packaging container 1C which is a third embodiment of the packaging container of the present invention. The packaging container 1C has the same basic configuration as the packaging container 1B described above. That is, the container main body 2C in the packaging container 1C is configured to include the outer container 4 having the upper opening 40 and the inner container 5 inserted into the upper opening 40 and detachably mounted in the outer container 4. The inner surface (side wall portion) of the outer container 4 at the lateral outer position of the inner container 5 in a state where the housing portion 21 of the contained object (not shown) includes the inner container 5 and the inner container 5 is mounted inside the outer container 4. 4S) and the outer surface (side wall portion 21S) of the inner container 5 has a vapor flow path 22 formed therein. The same components as those of the packaging container 1B in the packaging container 1C are designated by the same reference numerals, and the description thereof will be omitted.

In the packaging container 1C, as shown in FIG. 6, the upper opening 40 of the outer container 4 and the upper portion (opposite to the bottom portion) of the inner container 5 (accommodation portion 21) have contour shapes (shapes in a top view). They are the same as each other. That is, the contour shape of the upper opening 40 of the outer container 4 is a quadrangular shape with rounded corners (substantially quadrangular shape), and the contour shape of the upper portion of the inner container 5 is as shown in FIG. 3 in a top view. It has a substantially rectangular shape. It should be noted that "the contour shapes are the same" as used herein includes both forms in which the contour shapes are similar to each other and those in which the contour shapes are congruent (that is, the similarity ratio is 1). Be done. Then, when the inner container 5 is mounted in the outer container 4, the entire periphery of the flange portion 21F of the inner container 5 contacts the step portion 43 of the outer container 4 as shown in FIGS. 6 and 7. .. That is, when the inner container 5 is inserted into the upper opening 40 of the outer container 4 and attached to the outer container 4, the entire upper opening 40 is covered by the inner container 5 (flange portion 21F). Therefore, in the packaging container 1C, the upper opening exposed portion 40E (see FIG. 3) that was present in the packaging container 1B does not exist.

As shown in FIG. 7, the flange portion 21F of the inner container 5 (accommodation portion 21) in the packaging container 1C is formed so as to project from the upper end portion of the side wall portion 21S of the inner container 5. A through hole 21H that penetrates the flange portion 21F in the thickness direction is formed. More specifically, as shown in FIG. 6, a plurality of (eight) through holes 21H are intermittently formed in the flange portion 21F at predetermined intervals along the circumferential direction of the accommodation portion 21 having a circular shape in plan view. It is located in. The through hole 21H functions as a part of the vapor flow path 22 as described later.

The packaging container 1C having the above configuration can be used in the same manner as the packaging container 1B described above. In the packaging container 1C, when the inner container 5 is mounted inside the outer container 4 as shown in FIGS. 6 and 7, the vapor existing outside the packaging container 1C is located below the inner container 5 (accommodation portion 21). Flowing into the vapor flow path 22 from the ventilation holes 24, sequentially passing through the lower gap 41 and the side gap 42, and flowing toward the lid body 3 while diffusing so as to surround the inner container 5, and the flange of the inner container 5 is formed. It is supplied into the inner container 5, that is, the accommodation portion 21 through the through hole 21H formed in the portion 21F. Further, in the packaging container 1C, as shown in FIG. 6, a plurality of (eight) through holes 21H serving as steam outlets are evenly arranged around the inner container 5 (accommodation portion 21) for accommodating an object to be accommodated. As a result, the container main bodies 2C are formed symmetrically with respect to the virtual straight lines Lx and Ly, so that the contained object can be efficiently heated. The packaging container 1C also has the same effect as the packaging containers 1A and 1B.

Although the present invention has been described above based on its preferred embodiments, the present invention is not limited to the above embodiments. All the parts of the above-described one embodiment can be appropriately used mutually. For example, the shape of the container body (inner container, outer container), the shape of the ventilation holes, and the arrangement pattern of the ventilation holes are not limited to those in the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

1A, 1B, 1C Packaging container 2A, 2B, 2C Container body 20 Upper opening 21 Storage part 21U Bottom wall part 21S Side wall part 21F Flange part 21H Through hole 22 Steam flow path 22U Bottom wall part 22S Side wall part 23 Groove 24 Vent hole 25 Flange part 3 Lid body 4 Outer container 4U Bottom wall part 4S Side wall part 40 Upper opening 40E Upper opening exposed part 41,42 Gap 43 Step part 5 Inner container (accommodation part)
10 Individual food package F Contained object (food)
V steam

Claims (7)

A packaging container comprising a container body having an upper opening and a lid body covering the upper opening,
The container main body has a bottom wall portion that forms a placement surface of the receipt object and a side wall portion that stands upright from the placement surface, and is disposed outside the accommodation portion of the receipt object. With a steam flow path,
The accommodation portion is not provided with a vent hole communicating with the outside of the packaging container,
The vapor flow path extends laterally outward of the accommodating portion along the side wall portion from the bottom wall portion side toward the lid body side, and is on the opposite side of the vapor flow passageway from the lid body side. It communicates with the outside of the packaging container through a ventilation hole for vapor ventilation provided at one end and located at the bottom of the packaging container, and also communicates with the accommodation portion at the upper opening position covered by the lid. And
A packaging container in which steam that has flowed in from the ventilation hole located at the bottom of the packaging container flows through the steam flow path toward the lid and is supplied into the accommodation portion through the upper opening. On the bottom side of the container body, the accommodating portion and the vapor flow path are separated from each other in the horizontal direction by a groove that is a portion in which the bottom portion of the container body is recessed toward the upper opening side, and are independently separated from each other. On the upper side of the container body, they are not separated and share the internal space of the container body,
The packaging container according to claim 1, wherein the ventilation hole located at the bottom of the packaging container is provided in the vapor flow path. The container body is configured to include an outer container having an upper opening, and an inner container that is inserted into the upper opening and is detachably mounted in the outer container, and the accommodating portion is the inner container,
The vent located at the bottom of the packaging container is provided in the outer container,
The vapor flow path is formed between an inner surface of the outer container and an outer surface of the inner container at a lateral outer position of the inner container in a state where the inner container is mounted in the outer container. The packaging container according to 2 . The upper opening of the outer container and the upper portion of the inner container have different contour shapes, and when the inner container is inserted into the upper opening and attached to the outer container, a part of a peripheral portion of the upper opening is formed. The packaging container according to claim 3 , wherein an upper opening exposed portion that is not covered by the inner container is generated, and the upper opening exposed portion functions as the vapor flow path. The upper opening of the outer container and the upper portion of the inner container have the same contour shape,
A flange portion is formed on the upper portion of the inner container so as to project, and the flange portion is formed with a through hole that penetrates the flange portion in the thickness direction.
When the inner container is inserted into the upper opening of the outer container and attached to the outer container, the entire upper opening is covered by the inner container, and the through hole of the flange portion serves as the vapor flow path. The packaging container according to claim 3, which functions. In the state of mounting the inner container into the outer container, the inner container is at upper position than the bottom of the outer container, according to any one of claims 3-5 which is supported by the outer container Packaging container. What is claimed is: 1. A food package that is an article to be cooked, a container body that contains the food, and has a container body that has an upper opening, and a lid that covers the upper opening.
The container body has a bottom wall portion that forms a placement surface for the food product and a side wall portion that stands upright from the placement surface, and a storage portion for the food product and steam disposed laterally outside the storage portion. Has a flow path,
The accommodation portion is not provided with a vent hole communicating with the outside of the packaging container,
The steam flow path extends laterally outwardly of the accommodating portion from the bottom wall side toward the lid side along the side wall, and at one end of the steam flow path on the bottom wall side. It is provided on the bottom of the packaging container and communicates with the outside of the individual meal package through a ventilation hole for steam ventilation, and also communicates with the accommodation section at the upper opening position covered by the lid. And
Individual food packaging in which the steam that has flowed in from the ventilation hole located at the bottom of the packaging container flows through the steam flow path toward the lid and is supplied into the accommodation portion through the upper opening. body.

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