JP2004035051A - Food container for microwave oven - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To keep a container sealed up well, as well as to release steam to prevent it from blowing off a food or a lid of the container when its inner pressure increases, by letting the lid go up until its circumferential collar is locked onto locking projections that prevents the lid from being blown off at the time of the inner steam pressure increase, and allowing the steam to pass through a gap between the circumferential collar of the lid and a bearing surface of a container body to escape outside via a steam releasing recesses while the lid is lifted. <P>SOLUTION: The container comprises the container body 1 and the lid 2, and a lid fitting part 3, into which the circumferential collar of the lid is fitted, is formed on the interior of the circumferential edge of the container body. The lid fitting part 3 comprises the bearing surface 3a on which the circumferential collar of the lid 2 is placed, and raised walls 3b raised on the part of the bearing surface 3a that is other than the steam releasing recesses 4. While the raised walls 3b can be fitted airtightly on the edge of the circumferential collar, the locking projections 3c are formed on the raised walls to allow the lid to be lifted by the steam arising via the bearing surface. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a food container for a microwave oven, which is used, for example, when cooking food with a microwave oven.
[0002]
[Prior art]
Conventionally, as a food container for a microwave oven of this type, for example, as shown in Japanese Patent Application Laid-Open No. 2001-80682, the container is made of a synthetic resin container and a lid, and the lid is provided outside the periphery of the container. There is known a structure in which a peripheral flange is closely fitted to the outside and a structure having a steam release structure is known.
[0003]
[Problems to be solved by the invention]
However, in the case of the above conventional structure, when the food is heated by the microwave oven, the generated steam is released to the outside by the gap between the container body and the lid or the steam vent structure, and the rise in the pressure in the container is suppressed. Although the scattering of the body is prevented, the liquid inside the container may easily flow out, and in the case of the outer fitting structure, it may be difficult to release the mold in the resin mold molding of the lid body in manufacturing. Due to the outer fitting structure, there is also a disadvantage that the handle part may be heated by the released steam and difficult to take out.
[0004]
[Means for Solving the Problems]
An object of the present invention is to solve such a problem, and among the present invention, the invention according to claim 1 includes a synthetic resin container and a lid, and is provided inside the peripheral portion of the container. A lid fitting portion capable of fitting the peripheral flange portion of the lid is provided, and the lid fitting portion is provided with a mounting surface portion on which the peripheral flange portion of the lid can be mounted and a vapor vent from the mounting surface portion. A rising wall portion that stands up except for the concave portion is provided. A food container for a microwave oven, characterized in that it is provided with a locking projection capable of allowing floating by steam.
[0005]
Further, the invention according to claim 2 is characterized in that a vapor outlet groove communicating with the mounting surface is provided on the inner surface of the container body. A handle portion is provided on the container body, and an uneven portion is provided on the surface of the handle portion.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 5 show an embodiment of the present invention, wherein 1 is a container, and 2 is a lid. In this case, the container 1 has a thickness of 0.4 mm, and the lid 2 has a thickness of 0.4 mm. A lid fitting portion 3 which is thermoformed from a thin synthetic resin sheet of about 3 mm and which can fit the peripheral flange 2a of the lid 2 inside the peripheral edge of the container 1 is provided. The handle 1a is integrally formed, and an uneven portion 1c is provided on the surface of the handle 1a.
[0007]
In this case, as shown in FIG. 2, FIG. 4, and FIG. 5, the lid fitting portion 3 includes a mounting surface portion 3a on which the peripheral flange portion of the lid 2 can be mounted and a mounting surface portion 3a in two places in this case. It comprises a rising wall 3b that rises up except for the steam venting recess 4. In this case, a rising portion 3d is formed by the rising wall 3b, and a low rising portion 3e is formed in the steam venting recess 4. The upper wall 3b and the edge of the peripheral flange 2a of the lid 2 are provided so as to be in close contact with each other, and the rising wall 3b is allowed to float by the steam G from the mounting surface 3a of the lid 2 on the rising wall 3b. At a position at a distance H from the placement surface 3a, locking projections 3c that are locked to the peripheral flange 2a of the lid 2 to prevent the lid 2 from scattering are provided protrudingly at six locations.
[0008]
In this case, a vertically extending strip-shaped steam outlet groove 1b, which is concave and convex on the inner surface communicating with the mounting surface portion 3a, is integrally formed on the inner surface of the container body 1.
[0009]
Since this embodiment has the above configuration, when food is put in a synthetic resin container 1, the synthetic resin lid 2 is put on the container 1, and the food is heated by a microwave oven, the generated steam is It is released to the outside from a gap between the container body 1 and the lid body 2, and at this time, a lid fitting portion 3 capable of fitting the peripheral flange 2 a of the synthetic resin lid 2 inside the peripheral edge of the container body 1. Is formed, the so-called lid 2 has an inner fitting structure in which the lid 2 is fitted inside the container 1, so that the food and the lid can be prevented from being scattered outward. Since the raised portion 3b forms the raised portion 3d and the vapor venting recess 4 has the low raised portion 3e, the raised portion 3d and the low raised portion 3e are formed on the entire periphery of the container body 1. , The outflow of the liquid in the container body 1 can be suppressed, and because of the inner fitting structure, In the molding of the resin of the lid, the mold can be easily released, the production efficiency can be improved accordingly, and the inner fitting structure suppresses the heating of the handle 1a by the released steam. And the convenience of use can be improved.
[0010]
Further, in this case, the lid fitting portion 3 is formed from a mounting surface portion 3a on which the peripheral flange portion 2a of the lid body 2 can be mounted and a rising wall portion 3b which rises up from the mounting surface portion 3a except for the vapor vent recess 4. The rising wall 3b and the edge of the peripheral flange 2a of the lid 2 are provided so as to be able to come into close contact with each other, and the rising wall 3b is allowed to float by the steam G from the mounting surface 3a of the lid 2 on the rising wall 3b. Since the stopper 3c is provided, when the lid 2 is fitted to the container 1, the rising wall 3b and the edge of the peripheral flange 2a of the lid 2 fit tightly, so that the inside of the container is held tightly. When the internal pressure rises due to the steam in the container, the lid 2 is locked by the peripheral flange 2a of the lid 2 with the locking projection 3c. The cover 1 can be prevented from being scattered by the locking projections 3c. The gas is discharged to the outside through the steam release recess 4 through the gap of the distance H from the mounting surface portion 3a of the container body 1, so that the inside of the container can be kept tightly sealed and the internal pressure increases. Occasionally, vapor can be reliably removed, and scattering of food and the lid can be prevented.
[0011]
Further, in this case, since the steam outlet groove 1b communicating with the mounting surface portion 3a is provided on the inner surface of the container body 1, the steam G passes through the steam outlet groove 1b to the peripheral flange 2a of the lid 2 and the container. It is well led out to the gap between the body 1 and the mounting surface 3a, and the steam can be satisfactorily removed.
[0012]
In this case, since the container 1 and the lid 2 are thermoformed from a synthetic resin sheet, mass production can be easily performed at low cost. In this case, the handle 1a is attached to the container 1. In addition to the provision of the concave and convex portions 1c on the surface of the handle portion 1a, the above-mentioned inner fitting structure can also be combined to suppress the heating of the handle portion 1a by the released steam and to reduce the surface area of the handle portion 1a by the concave and convex portions 1c. The temperature of the handle portion 1a can be suppressed, and the convenience of use can be improved.
[0013]
Note that the present invention is not limited to the above embodiment, and the shape, structure, number, material, etc. of the container 1, the lid 2, the lid fitting portion 3, and the steam vent recess 4 are appropriately changed and designed. Is done.
[0014]
【The invention's effect】
As described above, in the invention according to claim 1, when the food is put in a container made of synthetic resin, the container is covered with a lid made of synthetic resin, and the food is heated by a microwave oven, The released steam is released to the outside from a gap between the container and the lid, and at this time, a lid fitting portion capable of fitting a peripheral flange portion of the synthetic resin lid is formed inside the peripheral edge of the container. Therefore, the so-called lid has an inner fitting structure that fits inside the container body, so that the food and the lid can be prevented from being scattered outward. In the resin mold molding of the top and the lid, the mold release can be easily performed, the production efficiency can be improved, and the lid fitting portion can be placed on the peripheral flange of the lid. It is composed of a rising wall that rises from the surface and the mounting surface except for the steam vent recess. The rising wall portion is provided with a locking projection that is capable of allowing the lid to float by the vapor from the mounting surface portion, so that when the lid is fitted to the container body, the rising wall portion and the lid The inside of the container can be hermetically sealed because it fits tightly with the peripheral edge of the body flange, so that cooking can be performed well, and when the internal pressure rises due to the steam in the container, the lid is The lid rises until the peripheral flange of the lid is locked to the locking projection, and the locking projection can prevent the lid from being scattered. With the rise of the lid, steam is released from the peripheral flange of the lid and the container. The gas is discharged to the outside through the steam release recess through the gap between the body and the mounting surface, so that the inside of the container can be kept tightly sealed and the steam can be reliably released when the internal pressure rises. It can prevent the food and the lid from scattering.
[0015]
Further, in the invention according to claim 2, since the steam outlet groove portion communicating with the mounting surface portion is provided on the inner surface of the container body, the steam is transmitted to the peripheral flange portion of the lid via the steam outlet groove portion. It is well led out to the gap between the container body and the mounting surface, and the steam can be satisfactorily removed.
[0016]
According to the third aspect of the present invention, the handle 1a is provided on the container body 1 and the unevenness is provided on the surface of the handle. The heating of the portion can be suppressed, and the surface area of the handle portion can be increased by the uneven portion, so that the temperature rise of the handle portion can be suppressed and the convenience of use can be improved.
[0017]
As described above, the intended purpose can be sufficiently achieved.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the embodiment of the present invention.
FIG. 3 is a partially cutaway plan view of the embodiment of the present invention.
FIG. 4 is a partial cross-sectional view of the embodiment of the present invention.
FIG. 5 is a partial cross-sectional view of the embodiment of the present invention.
[Explanation of symbols]
G Steam 1 Container body 1a Handle 1b Steam lead-out groove 1c Concavo-convex part 2 Lid 2a Peripheral flange 3 Lid fitting 3a Placement surface 3b Rising wall 3c Locking convex 4 Steam releasing recess

Claims (3)

The container body is made of a synthetic resin container and a lid, and a lid fitting portion capable of fitting a peripheral flange portion of the lid is provided inside the peripheral portion of the container body, and the lid fitting portion is provided with the lid. A mounting surface portion on which the peripheral flange portion of the body can be mounted, and a rising wall portion rising from the mounting surface portion excluding the steam vent recess, and the rising wall portion and the peripheral flange portion edge of the lid are formed. A food container for a microwave oven, wherein said food container for a microwave oven is provided so as to be capable of being closely contacted with said rising wall portion and is provided with a locking convex portion capable of allowing floating from said mounting surface portion of said lid by steam. The food container for a microwave oven according to claim 1, wherein a steam outlet groove communicating with the placement surface is provided on an inner surface of the container. The food container for a microwave oven according to claim 1 or 2, wherein a handle portion is provided on the container body and an uneven portion is provided on a surface of the handle portion.

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