JP2001287776A - Packaging container ready for microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container which can package and store a non-cooked or cooked food in a sealed manner, be heat-cooked by a heating means such as a microwave oven with a lid member covering the container, be used repeatedly, and save the resources and suppress the discharge of the refuse. SOLUTION: An upper edge of a container body 2 is formed to an upper edge portion 4 having a U-shaped section, a circumferential edge of the lid member 3 is formed to a circumferential edge portion 10 having a U-shaped section with the upper edge portion fitted therein, a handle 14 for opening a lid is formed in a portion of the lid member, a recess 9 for forming a flow passage is formed in a portion of the upper edge portion in the container body, a swollen portion 15 for forming a flow passage by an inner space is formed in a portion of the circumferential edge portion in the lid member, and the flow passages on the container body side and the lid member sides are communicated with each other, or closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to packaging raw foods such as seafood or root vegetables or foods such as pre-processed retort foods and chilled foods, which can be frozen if necessary, and The present invention relates to a packaging container with a lid which can be cooked or heated by a microwave as it is when the food is eaten.

[0002]

2. Description of the Related Art Examples of this type of packaging container with a lid include a "closed container for a microwave oven" disclosed in Japanese Patent Application Laid-Open No. 62-193981, and Japanese Patent Application Laid-Open No. 7-206048.
Japanese Patent Application Laid-Open No. 11-222270 discloses a "sterilized packaging cup capable of directly viewing the contents" and a "microwave oven cooking lid" disclosed in JP-A-11-222270.

[0003] In these conventional packaging containers, a release agent is applied to a part of the seal portion, and the pressure in the container increases when heated and cooked in a microwave oven. The release agent is peeled off by the internal pressure to allow the internal vapor to escape. And
After cooking, the foodstuffs packed in these packaging containers are cut off from the upper part of the bag and opened, taken out into an appropriate container and served for food.

In the above-mentioned container, a plurality of tongue pieces are formed by radially piercing a cut line at the center of the lid, and only the edges of the tongue pieces shrink in the peripheral direction of the lid when cooked. By keeping the entire lid from shrinking, a proper joint state with the container body is maintained.

[0005]

In the case of the above-mentioned conventional packaging container, the upper portion of the bag must be cut open when the foodstuffs are taken out after heating and cooking in a microwave oven. Are inevitably discarded in a single use. Discarding the packaging container in a single use as described above has a problem that not only waste of resources but also increase of garbage is caused.

[0006] Further, in the packaging container of the above-mentioned conventional example, since the lid is provided with a radial cut line, the lid lacks hermeticity, and when the food is stored in a refrigerator or the like in a stored state, There is an inconvenience that the smell is transferred between other foods, or depending on the state of storage and storage, the content overflows and the interior of the storage is soiled. In addition, when cooking in a microwave oven, if the tongue by the cut line provided on the lid shrinks once due to heat, it will not return to the original state, so even if the container body can be used, the lid is repeatedly used for food storage Since the lid cannot be used, the lid must be disposed of each time, which leads to a waste of resources and an increase in waste.

[0007] Therefore, in the conventional packaging container, it can be reused repeatedly, and even in the method of reuse, it can be stored while maintaining a certain airtightness, and further, it can be reused. Therefore, there is a problem to be solved in that the food material stored in the above can be cooked as it is in a microwave oven, and the container can be used as it is as a tableware.

[0008]

As a specific means for solving the above-mentioned problems, the present invention relates to a packaging container comprising a container body and a lid member formed of a transparent or translucent resin,
An upper edge of the container main body is formed at an upper edge of a U-shaped cross section, and a peripheral edge of the lid member is formed at a peripheral edge of a U-shaped cross section having a size into which the upper edge is fitted, and a part thereof is formed. A handle for opening the lid is formed in the container body, a concave portion for forming a flow passage is formed in a part of an upper edge of the container body, and a part of a peripheral edge of the lid member is distributed in an inner space. A configuration in which a bulging portion for forming a passage is formed, and a covering position of a lid member is selected with respect to the container main body, so that a flow path on the container main body side and a flow path on the lid member side communicate or are sealed. The present invention provides a packaging container compatible with a microwave oven.

[0009] The upper edge of the U-shaped cross section is formed on the upper portion of the container body through a step; the upper edge and the peripheral edge of the U-shaped cross section are formed on the inner side wall, the upper surface wall, and the upper side. The inner wall and the outer wall of the upper edge and the peripheral edge are inclined with respect to the container body, with the inner wall being inward and the outer wall being inclined with respect to the container body; A plurality of handles are formed at symmetrical positions on the outer wall of the edge; a different diameter portion is formed along the circumferential direction on the body of the container body; Being concave, the container body having a rectangular shape is formed in a tapered surface by indenting a bottom corner portion inward; at least one handle portion is integrally formed on a peripheral portion of the lid member. That: a bulging portion is provided inside the position where the handle portion is formed in the peripheral portion And a handle provided on the container body and a handle provided on the cover member overlap each other at a position slightly shifted in angle when the cover body is covered with the cover member. Is included.

In the present invention, communication with the outside and sealing can be selectively performed by shifting or changing the position of the lid member with respect to the container main body. There is no danger of rupture even if cooked using a microwave oven, and since food can be kept in a refrigerator in a sealed state, there is no danger of liquid leakage even if the packaging container tilts. is there.

In particular, since the container body and the lid member can be appropriately washed, not only can the packaging container be repeatedly used as a packaging container for microwave ovens or storage without discarding, but also can be distributed during heating cooking in a microwave oven. Because the road is narrow, the internal pressure rises and plays a role of a pressure cooker, so that the ingredients can be cooked deliciously.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in more detail with reference to the illustrated embodiment. The packaging container 1 according to the first embodiment shown in FIGS. The container body 2 has a circular bowl shape formed of a transparent or translucent synthetic resin material having excellent heat resistance, and a lid member 3 covered on an upper portion of the container body 2.

The container body 2 is formed in a double structure in which the upper edge 4 has a substantially U-shaped cross section. As shown in FIG. 2, the upper edge 4 of this double structure has an inner wall 6 rising upward from a step 5 formed on the upper inner periphery of the container body 2 and a substantially horizontal upper surface wall 7. The outer end 8a of the outer wall 8 has a slightly curved surface that protrudes outward with a slightly curved surface to increase the strength of the free end.

The inner side wall 6 and the outer side wall 8 of the upper edge portion 4 of the double structure are located above the vertical line A (the upper side wall 7).
Side) is formed so as to be wide and the space below is narrow. That is, the inner wall 6 is inclined as a whole to the inside of the container, and the outer wall 8 is inclined to the outside of the container as a whole, and the gap between the step portion 5 and the free end 8a is narrowed.

The upper edge 4 formed in this way has a height of about 8 to 15 mm from the stepped portion 5, and a gas at a predetermined position on the upper edge 4 as shown in FIG. Alternatively, a recess 9 for a passage through which a fluid can flow is formed. The depth of the recess 9 is about 2 to 5 mm, and the length in the circumferential direction is about 10 to 50 mm.

The lid member 3 is formed in a double structure having a substantially U-shaped cross section so that the peripheral edge portion 10 substantially corresponds to the upper edge portion 4 of the container body 2 and can be fitted therein. As shown in FIG. 2, the peripheral portion 10 of this double structure is
Is formed by an inner wall 11 rising upward from the plane of FIG. 1, a substantially horizontal upper surface wall 12, and an outer wall 13 hanging downward, and a free end portion 13a of the outer wall 13 projects outward with a slightly curved surface. To increase the strength of the free end.

The inner wall 11 and the outer wall 13 in the peripheral portion 10 of the double structure are formed such that the space above the vertical line A (upper wall 12) is wide and the space below is narrow. Have been. That is, the inner wall 11 is entirely inclined inside the lid member, the outer wall 13 is entirely inclined outside the lid member, and the interval between the rising base of the inner wall 11 and the free end 13a is narrowed. Is formed.

The peripheral portion 10 thus formed has a height from the plane of the lid member 3 of about 8 to 15 mm. As shown in FIG. 1, a tongue-like handle portion 14 for opening the lid is provided on the outer wall 13 at a predetermined position in the peripheral portion 10, and the inner wall 11 at a position symmetrical to the handle portion 14 is provided. A bulging portion 15 is formed toward the center, and a space inside the bulging portion 15 serves as a gas or fluid flow passage.

As shown in FIG. 3, the handle 14 is formed so as to extend from a substantially middle portion of the outer wall 13 to the outside. The cover member 3 is easily opened. Further, the height of the bulging portion 15 formed to protrude inward at the symmetrical position of the handle portion 14 is approximately 2 to 5 mm,
Its circumferential length (width) is about 10 to 50 mm.
In short, the size of the bulging portion 15 substantially corresponds to the concave portion 9 provided in the container body 2.

The packaging container 1 having the above-described configuration is to store predetermined foodstuffs in the container main body 2 and cover or cover the lid member 3 for cooking or storage. The case of cooking raw foods such as kinds in a microwave oven will be described.
After storing a predetermined amount of water and an appropriate seasoning, the lid member 3 is covered. At this time, the lid is covered with the concave portion 9 of the container body 2 and the handle portion 14 of the lid member 3 aligned.

By covering in this way, as shown in FIG. 3, the concave portion 9 and the bulging portion 15 are brought into a state of coincidence,
A flow passage is formed by the concave portion 9 and the inner space 15a of the bulging portion 15, and the container main body 2 and the outside are in communication. With the lid covered in this manner, the packaging container 1 can be placed in an appropriate microwave oven, set for a predetermined time, and cooked.

When the food in the packaging container 1 is cooked by heating, the air inside expands and the water boils, so that the internal pressure rises. However, while the internal pressure in the packaging container 1 is maintained at a somewhat high value, the surplus expanded air and steam flow from the flow passage formed by the recess 9 and the internal space 15a of the bulging portion 15 to the arrow a. As shown in the above, since the food is discharged to the outside, the packaging container 1 does not burst even if cooked with the lid covered. On the contrary, since the pressure in the packaging container 1 increases, cooking can be performed in a kind of pressure cooker state, so that cooking time is short, and the flavor of the food material is not missed, so that delicious cooking can be performed.

When foods cooked as described above or retort foods, chilled foods and the like prepared by processing the foods in advance are stored in a refrigerator, the foods are stored in the container body 2.
After being stored in the inside, the cover member 3 is covered with the concave portion 9 of the container body 2 and the handle portion 14 of the cover member 3, that is, the bulging portion 15 are shifted so as not to coincide with each other.

With this covering, the concave portion 9 of the container body 2 and the bulging portion 15 of the lid member 3 come to a position where they do not coincide with each other. The communication is lost and the flow passage is not formed, and the container body 2
The lid member 3 can be covered in a state in which the lid member 3 is closed.

FIG. 4 shows the state of the bulging portion 15 on the side of the lid member 3 in this shifted cover state, and FIG. 5 shows the state of the concave portion 9 on the side of the container body 2. As shown in FIG. 4, the internal space 15 a of the bulging portion 15 is shielded by the inner side wall 6 of the upper edge 4 of the container main body 2, and is provided inside the upper surface wall 12 of the lid member 3. The upper surface of the upper surface wall 7 is closed by surface contact in a pressure-contact state, and a sealed state or airtightness can be maintained by the surface contact portion.

As shown in FIG. 5, the inner wall 11 of the lid member 3 is brought into surface contact with the lower portion of the inner wall 6 in a press-contact state to form a sealed state inside the portion where the concave portion 9 is provided, as shown in FIG. At the same time, outside the portion where the concave portion 9 is provided,
The outer wall 13 of the lid member 3 is in surface contact with the lower part of the outer side wall 8 in a press-contact state to form a sealed state, and the shielding state is maintained on both sides of the concave portion 9.

FIG. 6 shows a covering state of a portion where the concave portion 9 and the bulging portion 15 are not provided. As is clear from the figure, when the cover member 3 is covered with respect to the container body 2, the upper edge portion 4 on the container body 2 side is completely fitted into the peripheral edge portion 10 on the cover member 3 side. As a result, the sealability can be improved and the stability of the lid can be improved.

That is, when the lid member 3 is covered with respect to the container body 2, the inner wall 6 of the upper edge 4, the inner wall 11 of the peripheral edge 10, the upper wall 7 of the upper edge 4, and the upper wall of the peripheral edge 10 are formed. 12
The outer wall 8 of the upper edge 4 and the inner wall 13 of the peripheral edge 10 come into surface contact with each other, and the inner walls 6, 11 and the outer walls 8, 13 respectively Since the gap is wide and the gap below is narrow, the lid member 3 is always drawn toward the container body 2 after the lid is covered, and the surface contact portions of the respective surfaces are pressed against each other. As a result, the sealing property is improved, and the lid member 3 is in a state where it cannot be easily detached, so that the lid covering state is stabilized.

When the cover member 3 is applied to the container body 2, the cover member 3 is pressed against the container body 2 from above using the elasticity and flexibility of the resin used. The U-shaped upper edge portion 4 and the peripheral edge portion 10 fit together. And since the sealing property by the fitting of the container body 2 and the lid member 3 is remarkably good, when stored in a refrigerator or the like, the liquid contents leak even if the packaging container 1 is in a slightly inclined state. There is nothing. Although the packaging container according to the first embodiment has been described as having a circular bowl shape, it is not limited to a true circular shape, but includes a deformed circle, for example, an elliptical container as a matter of course. is there.

Next, a second embodiment shown in FIGS. The second embodiment is an example in which the packaging container 21 has a rectangular shape, for example, a rectangular shape. This packaging container 21 is also composed of a container body 22 and a lid member 23, which are made of a transparent or translucent synthetic material such as polypropylene, CPET or the like, which is excellent in heat resistance, as in the first embodiment. It is formed of a resin material.

The upper edge of the container body 22 is
It is formed on the upper edge 24 of a double structure having a substantially U-shaped cross section having substantially the same shape as that of the embodiment. That is, the upper edge portion 24 of the double structure has an inner wall 26 rising upward from a step 25 formed on the upper inner periphery of the container body 22, a substantially horizontal upper wall 27, and an outer wall hanging outward. The free end 28a of the outer wall 28 has a slightly curved surface that protrudes outward to increase the strength of the free end.

The inner wall 26 and the outer wall 28 at the upper edge 24 of the double structure are the same as those of the first embodiment shown in FIG.
Similarly, the inner wall 26 is formed so as to be inclined inwardly of the container as a whole, and the outer wall 28 is formed so as to be inclined outwardly as a whole.

In the upper edge 24 of the container body 22 thus formed, a recess 29 for a passage through which gas or fluid can flow is formed at one corner position as shown in FIG. ing. This recess 29 is
To the outer wall 28.

Similarly to the first embodiment, the lid member 23 has a substantially U-shaped cross section so that the peripheral edge 30 substantially corresponds to the upper edge 24 of the container body 22 and can be fitted therein. It is formed in a double structure having a shape. The peripheral portion 30 of the double structure is composed of an inner wall 31 rising upward from the plane of the lid member 23, a substantially horizontal upper surface wall 32, and an outer wall 33 hanging outward. The end 33a has a configuration in which the free end is increased in strength by projecting outward with a slightly curved surface.

The inner wall 31 of the peripheral portion 30 of the lid member 23 is formed so as to be entirely inclined inside the lid member, and the outer wall 33 is formed so as to be entirely inclined outside the lid member. The space between the base and the free end 33a is narrowed.

In the peripheral portion 30 thus formed, tongue-like handles 34a and 34b for opening the lid are provided on the outer side wall 33 of the symmetrical corner portion, and the other corner portion of the other corner portion is provided. A bulging portion 35 is formed on the inner wall 31 so as to protrude inward along the corner portion, and an inner space portion of the bulging portion 35 serves as a gas or fluid flow passage.
The corner portion where the bulging portion 35 is formed is a corner portion at a position facing the concave portion 29 when the lid member 23 is covered with the container body 22, and the corner portion where the handle portions 34a and 34b are provided is a concave portion. This is a corner portion that does not face 29.

The packaging container 2 according to the second embodiment
The first mode of use is substantially the same as that of the first embodiment, except that the configuration is different in that the bulging portion 35 is provided at a position where the handle portions 34a and 34b are not provided. is there. When cooking in a microwave oven, the concave 2
When the cover member 23 is covered in a state where the bulge 9 and the bulge 35 face each other, as shown in FIG. 8, the recess 29 and the internal space 35a of the bulge 35 communicate with the outside as a flow passage, By heating and cooking in a microwave oven, the internal air expands and the water boils and the internal pressure rises. However, as shown by the arrow a, these air and steam are discharged to the outside, so the lid is left covered. The packaging container 21 does not burst even if cooking is performed in the state described above. Also in this case, the packaging container 21
Since the internal pressure is increased, cooking can be performed in a kind of pressure cooker, so that the cooking time is short, and the flavor of the ingredients is not lost, so that the food can be deliciously cooked.

When the food thus cooked or the retort food, the chilled food or the like in which the food material is processed in advance is stored in a refrigerator, the lid member 23 is set at 180 degrees with respect to the container body 22. What is necessary is just to cover it while rotating it.

By covering in this way, the container body 22
The concave portion 29 and the bulging portion 35 of the lid member 23 come to the corner side where they do not coincide with each other, so that the concave portion 29 and the bulging portion 35 do not communicate with each other and no flow passage is formed, and the container body 22
The cover member 23 can be covered in a state where the cover member 23 is closed.

The lid in a closed state will be described.
As shown in FIG. 9, in the corner portion where the concave portion 29 is provided, the inner wall 31 of the lid member 23 is in surface contact with the lower portion of the inner wall 26 in a press-contact state to form a seal state,
The shielding state of the recess 29 is maintained by the surface contact seal.

Further, as shown in FIG.
In the corner on the side where is located, the inner space 35a of the bulging portion 35 is in surface contact with the upper surface wall 27 of the upper edge 24 of the container body 22 in contact with the inside of the upper surface wall 32 of the lid member 23. At the same time, the outer walls 28 and 33 are closed by surface contact with each other, so that the surface contact portion can maintain a sealed state or airtightness.

By covering in this way, when the cooked food containing water is stored in the packaging container 21 and stored in a refrigerator or the like, even if the packaging container 21 is slightly inclined, the liquid content can be reduced. Nothing leaks out.

Further, a third embodiment shown in FIGS. 11 to 14 will be described. This third embodiment is an example in which a rectangular packaging container is used as in the second embodiment. This packaging container 41
Also includes a container body 42 and a lid member 43, which are similar to the first and second embodiments, for example,
It is formed of a transparent or translucent synthetic resin material having excellent heat resistance such as polypropylene and CPET.

The upper edge of the container body 42 is
And it is formed in the upper edge part 44 of the double structure which presents the substantially U-shaped cross section of substantially the same shape as 2nd Embodiment. That is, the upper edge 44 of the double structure is formed by the inner wall 46 rising upward from the step 45 formed on the upper inner periphery of the container body 42.
A substantially horizontal top wall 47 and an outer wall 48 hanging outward.
The free end 48a of the outer wall 48 is configured to protrude outward with a slightly curved surface to increase the strength of the free end. Also, the upper edge 44 of the double structure
The inner wall 46 and the outer wall 48 are similar to those in FIG. 2 of the first embodiment, and the inner wall 46 is entirely inclined inside the container, and the outer wall 48 is entirely inclined outside the container. It is formed as follows.

In the upper edge portion 44 of the container body 42 thus formed, for example, as shown in FIG. 11, a concave portion 49 for a passage through which gas or fluid can flow is formed on one long side of a rectangle. Is formed. The concave portion 49 extends from the upper surface wall 47 to the outer wall 48 so that the upper surface
7a is provided.

As in the first and second embodiments, the peripheral portion 50 of the lid member 43 is also formed by the container main body 42 in the same manner as in the first and second embodiments.
It is formed in a double structure having a substantially U-shaped cross section so as to substantially correspond to and be fitted to the upper edge portion 44. The peripheral portion 50 of the double structure is composed of an inner wall 51 rising upward from the plane of the lid member 43, a substantially horizontal upper surface wall 52, and an outer wall 53 hanging outward. The end 53a has a slightly curved surface and is projected outward to increase the strength of the free end.

The inner wall 51 of the cover member 43 is formed so as to be entirely inclined inside the container, and the outer wall 53 is formed so as to be entirely inclined outside the container. The gap with the portion 53a is narrowed.

In the peripheral portion 50 thus formed, tongue-like handles 54a, 54b for opening the lid are provided on the outer wall 53 of the symmetrical corner portion, and one long side of the rectangle is provided. Further, a bulging portion 55 protruding upward and inward is formed from the inner wall 51 to a part of the upper surface wall 52, and an inner space of the bulging portion 55 serves as a gas or fluid flow passage. The position where the bulging portion 55 is formed is a position facing the concave portion 49 on the container main body 42 side when the lid member 43 is covered with the container main body 42, and leaves a part of the upper surface 52 a of the upper surface wall 52. It is formed in a state where it is set.

The packaging container 4 in the third embodiment
The first mode of use is substantially the same as that of the first and second embodiments, except that the configuration is different in that the concave portion 49 and the bulging portion 55 are provided on one long side. In the case of cooking in a microwave oven, when the cover member 43 is covered in a state where the concave portion 49 and the bulging portion 55 face each other, as shown in FIG. 55a serves as a flow passage and communicates with the outside, and when cooking and heating in a microwave oven, the internal air expands and the water boils to raise the internal pressure. Is discharged to the outside, so that the packaging container 41 does not burst even if cooked with the lid covered. Also in this case, since the pressure in the packaging container 41 is increased, the cooking can be performed in a kind of pressure cooker state, so that the cooking time is short, and the flavor of the food material is not missed, so that the food can be deliciously cooked.

When the food thus cooked or the foodstuff is a pre-processed retort food, chilled food or the like, which is stored in the packaging container 41 and stored in a refrigerator, the container body 42 Cover member 43 horizontally 18
What is necessary is just to cover it in the state rotated 0 degrees.

By covering in this manner, the container body 42
Since the concave portion 49 and the bulging portion 55 of the lid member 43 come to the long side where they do not coincide with each other, the concave portion 49 and the bulging portion 55 do not communicate with each other, so that no flow passage is formed and the container body 42 is sealed. In this state, the lid member 43 can be covered.

The lid in the closed state will be described.
As shown in FIG. 13, on the long side where the concave portion 49 is provided, the inner wall 51 of the lid member 43 comes into surface contact with the inner wall 46 of the container body 42 in a press-contact state, and the upper surface 47 a of the upper wall 47 is partially pressed. A part of the inside of the upper surface wall 52 of the lid member 43 is brought into surface contact with the pressure contact state to form a sealed state, and the sealing state of the surface contact maintains the shielding state of the recess 49.

Further, as shown in FIG.
In the long side where the bulging portion 55 is located, the inner space portion 55a of the bulging portion 55 is in surface contact with the upper wall 47 on the container body 42 side in pressure contact with the inside of the partial upper surface 52a of the lid member 43. At the same time, the outer walls 48 and 53 are closed by surface contact with each other in a press-contact state, so that the sealed state or airtightness can be maintained by the surface contact portion.

By covering in this manner, the cooked food containing water is stored in the packaging container 41 and stored in a refrigerator or the like, and even if the packaging container 41 is slightly inclined, the liquid content can be reduced. It does not leak.

Further, a fourth embodiment shown in FIGS. 15 to 22 will be described. In the fourth embodiment, as in the third embodiment, an example in which a packaging container 61 having a rectangular shape, for example, a substantially square shape having a corner portion formed in an arc shape in plan view is used. It is. This packaging container 61 is also composed of a container body 62 and a lid member 63, which are made of, for example, polypropylene, CPET, etc., similarly to the first, second and third embodiments. It is formed of an excellent transparent or translucent synthetic resin material.

The upper edge of the container body 62 is
It is formed on the upper edge 64 of a double structure having a substantially U-shaped cross section having substantially the same shape as that of the third embodiment. That is, the upper edge 64 of the double structure is formed by the inner wall 66 rising up from the step 65 formed on the upper inner periphery of the container body 62.
, A substantially horizontal upper surface wall 67 and an outer wall 68 hanging outward.
The free end 68a of the outer wall 68 has a slightly curved surface and protrudes outward to increase the strength of the free end. Also, the upper edge 64 of the double structure
The inner side wall 66 and the outer side wall 68 are similar to FIG. 2 of the first embodiment, and the inner side wall 66 is entirely inclined inside the container, and the outer side wall 68 is entirely inclined outside the container. It is formed as follows.

In the upper edge 64 of the container main body 62 thus formed, one side is provided with a recess 69 for a passage through which gas or fluid can flow, as shown in FIGS.
Are formed. The recess 69 is provided from the upper wall 67 to the outer wall 68 while leaving a part of the upper surface 67a of the upper wall 67.

In particular, the container main body 62 in the fourth embodiment has an outer wall 68 at a symmetrical corner.
Handles 68b and 68c formed integrally and horizontally extending from the lower end of the container, different diameter portions 62a formed in the body of the container body 62 along the circumferential direction, and each corner at the bottom inward. The feature resides in a configuration having a tapered surface 63b formed by being depressed.

The different diameter portion 62 formed on the body of the container body 62
a has a band shape having a predetermined width as shown in FIG. 17, and is formed so as to protrude or bulge slightly outward from the trunk, and substantially at the center of the trunk in the height direction. It is formed at a position above the part. The different diameter portion 62
The formation of “a” may be made slightly indented from the body or formed as a recess. In short, it is only necessary that the body of the container main body 62 has a processed portion as a bulging portion protruding outward along the circumferential direction or a concave portion concaved inward.

As described above, the different diameter portion 6 is attached to the body of the container body 62.
The presence of 2a prevents bubbles generated during heating and cooking from rising along the wall surface of the container body 62, and prevents a so-called boiling over phenomenon.

Further, as shown in FIG. 18, the tapered surface 63b provided at each corner portion at the bottom eliminates the corner portion which usually occurs due to the joining of three sides to the bottom of the rectangular container. It is possible to prevent foodstuffs stored in the inside from adhering to the corners, to make it easier to take out foodstuffs from the container main body 62, and to facilitate the cleaning operation when cleaning the container main body 62.

In the same manner as in the first to third embodiments, the peripheral portion 70 of the lid member 63 is
It is formed in a double structure having a substantially U-shaped cross section so as to substantially correspond to and fit with the upper edge portion 64. The peripheral portion 70 of the double structure is composed of an inner side wall 71 rising upward from the plane of the lid member 63, a substantially horizontal upper surface wall 72, and an outer side wall 73 hanging outward. The end 73a has a configuration in which the free end is increased in strength by projecting outward with a slightly curved surface.

The inner wall 71 of the lid member 63 is formed so as to be entirely inclined inside the container, and the outer wall 73 is formed so as to be entirely inclined outside the container. The gap with the portion 73a is formed to be narrow.

In the peripheral portion 70 thus formed, a tongue-like handle portion 74 for opening the lid is provided on the outer side wall 73 of at least one corner portion. A bulging portion 75 projecting upward and inward is formed over a part of the upper surface wall 72, and a space inside the bulging portion 75 serves as a gas or fluid flow passage. The position where the bulging portion 75 is formed is
3 is a position facing the concave portion 69 on the container main body 62 side when the container main body 62 is covered with the cover 3, and is formed with a partial upper surface 72 a of the upper wall 72 left.

The packaging container 6 in the fourth embodiment
The use mode of the first embodiment is substantially the same as that of the first to third embodiments. However, when the lid member 63 is covered with respect to the container main body 62, as shown in FIG. Body 6
When the cover is covered with the concave portion 69 of the second and the bulging portion 75 of the cover member 63 coincided with each other, a handle portion 74 provided on the cover member 63 is provided.
Are always overlapped with one of the handles 68b and 68c provided on the container body 62.

In this case, the overlapping state is slightly shifted. That is, the handle portions 68b and 68c formed on the container body 62 side are formed in a well-balanced direction passing through the center of the container body 62, and the handle portion 74 on the lid member 63 side is slightly angled from the direction passing through the center. It is better to be formed shifted. Since the handle portions 68b and 74 overlap with each other with a slight shift in this manner, the cover member 63
When the cover is opened, it is easy to pick each of them with a finger, and the cover opening operation can be performed easily.

The handle 68 provided on the container body 62
For b and 68c, for example, characters such as "Heat treatment" or "MICROWAVE" are engraved and displayed for the handle portion 68b, and characters such as "Refrigerated / Frozen" or "FREEZER" are engraved for the handle portion 68c. Display,
By covering the handle portion 74 provided on the cover member 63 so as to overlap the display portion, the handle portion can be used as a guide when heat treatment is performed by a microwave oven or stored in a refrigerator.

When cooking in a microwave oven,
When the handle portion 74 is covered according to the indication, as shown in FIG. 19, the cover member 63 is covered with the concave portion 69 and the bulging portion 75 aligned with each other, and as shown in FIG. The recess 69 and the internal space 75a of the bulging portion 75 serve as a flow path and communicate with the outside. When heating and cooking in a microwave oven, the internal air expands and the water boils to raise the internal pressure. As shown by a, these air and steam are discharged to the outside, so that the packaging container 61 does not burst even if cooked with the lid covered. Also in this case, since the pressure in the packaging container 61 is increased, cooking can be performed in a kind of pressure cooker, so that the cooking time is short, and the flavor of the food material is not lost, so that the food can be deliciously cooked.

In the case where the food thus cooked or the foodstuff is a pre-processed retort food, chilled food, or the like, which is stored in the packaging container 61 and stored in a refrigerator, the container body 62 Cover member 63 horizontally 18
What is necessary is just to cover it in the state rotated 0 degrees.

By covering in this manner, the container body 62
The concave portion 69 and the bulging portion 75 of the lid member 63 are located at positions where they do not coincide with each other, so that the concave portion 69 and the bulging portion 75 do not communicate with each other, no flow passage is formed, and the container body 62 is sealed. Thus, the lid member 63 can be covered.

The lid in the closed state will be described.
As shown in FIG. 21, at the position where the concave portion 69 is provided, the inner wall 71 of the lid member 63 comes into surface contact with the inner wall 66 of the container main body 62 in a pressure-contact state, and the upper surface 67 a of the upper surface wall 67 has a lid. A part of the inside of the upper surface wall 72 of the member 63 is brought into surface contact in a press-contact state to form a sealed state, and the sealing state of the concave part 69 is maintained by the surface-contacted seal.

Further, as shown in FIG.
On the side where the bulging portion 75 is located, the inner space 75a of the bulging portion 75 is in surface contact with the upper surface wall 67 on the container main body 62 side in pressure contact with the inside of the partial upper surface 72a of the lid member 63. The outer walls 68 and 73 are closed by surface contact with each other in a pressure contact state, so that the surface contact portion can maintain a sealed state or airtightness.

By covering in this way, the cooked food containing water is stored in the packaging container 61 and stored in a refrigerator or the like, and even if the packaging container 61 is slightly inclined, the liquid content can be removed. It does not leak.

In the second to fourth embodiments, the upper edges 24, 44, 64, the recesses 29, 49, 6
9. Peripheral portions 30, 50, 70 and bulging portions 35, 55, 7
Regarding the dimensions such as the size of 5, the matters described in the first embodiment can be applied as they are. Furthermore, in order to increase the overall strength, a rib-shaped uneven portion may be provided in a ring shape or a rectangular shape on the flat portion at the bottom of the lid member or the container body in each embodiment.

In any case, the packaging container according to the present invention can communicate with the outside and seal by shifting or changing the position where the lid member is covered with respect to the container body. There is no danger of rupture even if the product is cooked in a microwave oven with the lid in place, and when the food is stored in the refrigerator, the sealed state can be maintained, so that the liquid material leaks due to the inclination of the packaging container, etc. There is no danger, and the packaging container can be repeatedly used as a microwave or storage packaging container without discarding. These packaging containers can be formed by, for example, vacuum molding or injection molding.

[0076]

As described above, the packaging container according to the present invention is a packaging container comprising a container body and a lid member formed of a transparent or translucent resin, wherein the upper edge of the container body is cross-sectionally formed. It is formed on the upper edge of the U-shape, and the peripheral edge of the lid member is formed on the periphery of the U-shape in cross section, the size of which fits the upper edge, and a handle for opening the lid is partially formed. Forming, forming a recess for forming a flow passage in a part of the upper edge of the container body, in a part of the peripheral edge of the lid member,
Forming a bulging portion for forming a flow passage in the inner space portion,
By selecting the cover position of the lid member with respect to the container body, the flow path on the container body side and the flow path on the lid member side are configured to be communicated or sealed. By shifting or changing the position of the lid, communication with the outside and sealing can be selectively performed, and there is no danger of the container bursting even when heating and cooking using a microwave in the covered state. In addition, since the sealed state can be maintained when the food is stored in the refrigerator, there is an excellent effect that there is no danger of the liquid material leaking out even if the packaging container is tilted in the refrigerator.

In the packaging container according to the present invention, since the container body and the lid member can be appropriately cleaned, the packaging container can be used not only as a packaging container for a microwave oven or for storage without repeatedly discarding, but also as a microwave oven. In the case of cooking by heating, the food can be cooked with the lid member covered, so that the internal pressure is increased and it plays a role of a pressure cooker, so that an excellent effect that the food can be cooked deliciously is exhibited.

Further, since the handle portion is provided at a symmetrical position of the container body, even if the dish immediately after heating and cooking is in a hot state, it can be carried without feeling much heat due to the presence of the both handle portions. When the lid is removed while the dish is hot, the upper and lower handles are picked up and the upper handle is rolled up to easily and spill the contents. It can be safely removed without any need, and the container body with the lid removed can be used as it is as a tableware.In short, the packaging container can be used as a sealed storage container, for cooking and for cooking, and repeated. Since it can be used, it does not become disposable, and has an excellent effect that resources can be saved and garbage discharge can be significantly suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a packaging container according to a first embodiment of the present invention, in which a container body and a lid member are separated.

FIG. 2 is an enlarged cross-sectional view of a main part for describing a fitting portion between a container body and a lid member in the packaging container.

FIG. 3 is an enlarged cross-sectional view of a main part at one position when a lid member is covered on a container body in the packaging container.

FIG. 4 is an enlarged sectional view of a main part when the lid member is shifted from one position to another position on the container body in the packaging container.

FIG. 5 is an enlarged cross-sectional view of another main part when the lid member is shifted from one position to another position on the container main body in the packaging container.

FIG. 6 is an enlarged cross-sectional view showing a fitted state at most positions when the container body is covered with a lid member in the packaging container.

FIG. 7 is a perspective view schematically showing a packaging container according to a second embodiment of the present invention, in which a container body and a lid member are separated.

FIG. 8 is an enlarged cross-sectional view of a main part at one position when a lid member is covered on the container body in the packaging container.

FIG. 9 is an enlarged cross-sectional view of a main part when the lid member is rotated by 180 degrees from one position to another position on the container main body in the packaging container and covered.

FIG. 10 is an enlarged cross-sectional view of another main part when the cover member is rotated by 180 degrees from one position to another position on the container main body in the packaging container and covered.

FIG. 11 is a perspective view schematically showing a packaging container according to a third embodiment of the present invention in which a container body and a lid member are separated.

FIG. 12 is an enlarged cross-sectional view of a main part at one position when a lid member is covered on the container body in the packaging container.

FIG. 13 is an enlarged sectional view of a main part when the lid member is rotated by 180 degrees from one position to another position on the container main body in the packaging container and covered.

FIG. 14 is an enlarged cross-sectional view of another main part when a lid member is rotated by 180 degrees from one position to another position on the container main body in the packaging container and covered.

FIG. 15 is a perspective view schematically showing a packaging container according to a fourth embodiment of the present invention, in which a container body and a lid member are separated.

FIG. 16 is a plan view showing a container body of the packaging container.

FIG. 17 is an enlarged sectional view taken along the line BB of FIG. 16;

FIG. 18 is an enlarged sectional view taken along line CC of FIG.

FIG. 19 is a plan view showing a state where the container body of the packaging container is covered with a lid member.

20 is an enlarged cross-sectional view of only a main part along the line DD in FIG. 19;

FIG. 21 shows a lid member on a container body of the packaging container in FIG.
It is an expanded sectional view which shows only the principal part at the time of rotating 180 degrees from the position of 9 to another position, and covering.

FIG. 22 shows a lid member on a container body of the packaging container in FIG.
It is an expanded sectional view which shows only another important part at the time of rotating 180 degrees from the position of 9 to another position, and covering.

[Explanation of symbols]

1, 21, 41, 61 Packaging container 2, 22, 42, 62 Container body 3, 23, 43, 63 Lid member 4, 24 44, 64 Upper edge 5, 25, 45, 65 Step 6, 11, 26 , 31, 46, 51, 66, 71 Inner wall 7, 12, 27, 32, 47, 52, 67, 72 Upper wall 8, 13, 28, 33, 48, 53, 68, 73 Outer wall 9, 29, 49, 69 Concave portions forming flow passages 10, 30, 50, 70 Peripheral portions 8a, 13a, 28a, 33a, 48a, 53a, 68
a, 73a Free end 14, 14a, 14b, 54a, 54b, 68b, 68
c, 74 Handle portion 15, 35, 55, 75 Swelling portion 15a, 35a, 55a, 75a Internal space portion 47a, 52a, 67a, 72a Partial upper surface of upper wall 62a Different diameter portion 62b Tapered surface a Arrow in exhaust direction .

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA05 AA14 AA24 BA01 DB13 DC03 EA03 FA09 FC03 GA08 4B055 AA10 AA17 BA07 BA34 BA61 BA80 CA05 CA06 CA22 CA34 CA43 CB01 CB03 CB08 CB13 CB17 DB15 FB34 FC02 FC09

Claims (11)

[Claims] 1. A packaging container comprising a container body and a lid member made of a transparent or translucent resin, wherein an upper edge of the container body is formed at an upper edge of a U-shaped cross section, A peripheral edge of the member is formed in a peripheral portion having a U-shaped cross section large enough to fit the upper edge portion, and a handle portion for opening the lid is formed in a part thereof; a part of the upper edge portion in the container body Forming a recess for forming a flow passage in the cover member; forming a bulging portion for forming a flow passage in an inner space portion in a part of a peripheral portion of the lid member; A packaging container for a microwave oven, characterized in that, by selecting a cover position, a communication passage between the container body side and the lid member side is communicated or sealed. 2. The packaging container for a microwave oven according to claim 1, wherein the upper edge of the U-shaped cross section is formed on the upper portion of the container body via a step. 3. The packaging container for a microwave oven according to claim 1, wherein the upper edge and the peripheral edge of the U-shaped cross section are formed by an inner wall, an upper wall, and an outer wall. 4. The microwave-compatible microwave oven according to claim 3, wherein the inner wall and the outer wall of the upper edge and the peripheral edge are inclined with respect to the container body, with the inner wall being inward and the outer wall being inclined outward. Packaging containers. 5. The packaging container for a microwave oven according to claim 4, wherein a plurality of handles are formed at symmetrical positions on the outer wall of the upper edge of the container body. 6. The packaging container for a microwave oven according to claim 1, wherein a different diameter portion is formed in a body portion of the container body along a circumferential direction. 7. The packaging container for a microwave oven according to claim 6, wherein the different diameter portion is a band-shaped bulging portion or a concave portion. 8. The packaging container for a microwave oven according to claim 1, wherein the container body having a rectangular shape is formed in a tapered surface by recessing a bottom corner portion inward. 9. The packaging container for a microwave oven according to claim 1, wherein at least one handle is integrally formed on a peripheral portion of the lid member. 10. The microwave-compatible packaging container according to claim 1, wherein a bulging portion is provided inside a position on the peripheral edge portion where the handle portion is formed. 11. A handle provided on the container body and a handle provided on the cover member when the cover body is covered with the cover member.
10. The microwave-compatible packaging container according to claim 1, 5 or 9, wherein the packaging container overlaps at a position slightly shifted in angle.