JPH0858819A - Fitting-type easy-unsealable packaging container - Google Patents

Abstract

PURPOSE: To surely prevent a cover from being blown off by an internal pressure of a container and easily open the cover by a method wherein a fitting type easy-unsealable packaging container of a cylindrical food packaging container is formed by covering an inner fitting form with a container body and a cover. CONSTITUTION: A easy-unsealable packaging container of a cylindrical food packaging container is formed by covering an inner fitting form with a container body 1 and a cover 9. At this time, at fitting parts 3a, 3b where the container body 11 is fitted to the cover 9, the cover 9 can be rotated along the fitting part 3a of the container body 11. At least one recess 10 is formed in the fitting part 3a of the container body 11. The fitting parts 3a, 3b where the container body 11 is fitted to the cover 9 are composed of peripheral groove parts 5a, 5b and side wall parts 4a, 4b. Furthermore, the side wall parts 4a, 4b where the container body 11 is fitted to the cover 9 are stepped. By rotating the cover 9, an opening is formed by the recess 10 provided in the fitting part 3a of the container body 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting type easy-open packaging container. For details, a container for packaging food such as bento and Western-style dishes, especially a cylindrical plastic container in which the container body and the lid are closed with an internal fitting type. Provided is a non-fitting type easy-open packaging container.

[0002]

2. Description of the Related Art Conventionally, containers used for lunch boxes and Western-style side dishes are of an outer fitting type in which the container and the lid fit the outer edge of the opening of the container body inside the side wall of the lid as shown in FIG. Containers are the mainstream. In this outer fitting type container, the container body and the lid are closed by filling food with a lid. If this is put on a microwave oven with the lid still open or without making a hole in the lid, there is a problem that the lid is blown off by the pressure generated in the container when heated and the inside of the microwave oven is soiled.

[0003]

SUMMARY OF THE INVENTION In view of the above background, the present invention is to fill a container main body with food and leave the container closed with a lid closed or without opening a hole in the microwave oven or heating. An object of the present invention is to provide a fitting-type easy-open container in which the lid does not fly off or come off due to the internal pressure generated from the inside of the kettle and the lid can be easily opened.

[0004]

The present invention is a fitting type easy-opening container which is a cylindrical food packaging container in which a container body and a lid are closed in an internally fitting type. That is, in the cylindrical food packaging container in which the container body and the lid are closed in an internally fitting type,
At the fitting portion where the container body and the lid are fitted, the lid is configured to be rotatable along the circumferential groove portion and the side wall portion that form the fitting portion of the container body, and at the fitting portion of the container body. , The object can be achieved by forming at least one recess.

The food packaging container 1 of the present invention comprises a container body 11
The opening of the lid 9 has a cylindrical shape, and is closed to the inner fitting type. Then, in the fitting portion provided in the opening of the container body, at the same time as forming the peripheral groove portion and the side wall portion around which the fitting portion of the lid makes a circumferential groove,
At least one recess is formed. A flange portion is formed on the periphery of the opening of the container body. On the other hand, the fitting portion of the lid is formed in a convex shape so as to fit with the fitting portion of the container body, and a flange portion is formed on the periphery of the fitting portion so as to overlap with the flange portion of the container body.

Further, according to the present invention, at the fitting portion where the container body and the lid are fitted, a step is provided on the side wall portion of the fitting portion which is in contact with each other. By doing so, the container body and the lid are not easily opened, but the closure is held well enough that the lid can be easily opened by the force of the hand. Then, the container body and the lid are kept closed while the lid is rotated along the fitting portion of the container body.

As described above, the food packaging container of the present invention having the container body and the lid is configured such that, when the lid is fitted to the container body by the inner fitting type, the container body and the lid are closed at the fitting portion and at the same time, the container is The flange part at the periphery of the opening of the main body and the flange part at the periphery of the fitting part of the lid close the entire container body including the recess formed in the fitting part of the container body. .

According to the present invention, in the state where the entire container body is closed by the lid, when the lid is manually rotated along the fitting portion while the container body is covered, the flange of the lid moves and the container body An opening is formed in at least one recess formed in the fitting portion. When the container is placed in a microwave oven or a heating pot with the opening thus formed, the lid will not fly off due to the internal pressure generated in the container. Therefore, the cooking can be performed without polluting the inside of the microwave oven or the heating pot.

The food packaging container used in the present invention is a plastic container and is not particularly limited as long as it is a material suitable for food, but polypropylene resin, polypropylene resin and a filler such as calcium carbonate are mixed in an amount of 10 to 50% by weight. A resin having moldability such as a resin, a mixed resin of polypropylene resin and polyethylene resin, or a polystyrene resin is used.

The shape of the container body and the lid can be molded by using a plastic resin such as the polypropylene resin by a vacuum forming method, a vacuum pressure forming method, a pressure forming method or the like. For the container body, a sheet of plastic resin such as polypropylene resin is formed into a cylindrical shape by a vacuum forming method or the like. In other words, an L-shaped fitting portion consisting of a circumferential groove portion and a stepped sidewall portion is formed on the body portion of a circular shape having a bottomed bottom and a cylindrical shape having an appropriate depth according to the purpose of use, and its peripheral edge. Is formed to have a flange portion.

At least one recess (recess) is formed in the fitting portion of the container body. The size of the recess (recess) does not have to be so large, but when the container body and lid are fitted together, they are covered by the flange of the lid, but the lid is located along the circumferential groove from its original position. It is sufficient that the opening is formed by the recess (dent) and the flange of the lid when rotated to about 45 degrees. The size of the recess (dent) is appropriately determined according to the size of the container. This opening serves as a passage for the internal pressure of air and water vapor in the container, which is generated by heating when it is applied to a microwave oven or a heating pot. Recess (concave) in the container body
Although it may be formed in one place, it is preferable to form two or more places.

The lid is molded in the same manner as the container body by the vacuum pressure molding method. In other words, a cylindrical body with a suitable depth is formed from a circular ceiling, and a convex fitting portion composed of a circumferential groove portion and a stepped side wall portion is formed under the body portion, and a flange portion is formed on the periphery thereof. Is formed.

The container body and the lid molded in this way are fitted inside, and can be rotated along a fitting portion where they are in contact with each other. Further, the container body and the lid are well fitted and closed so that the lid does not fly when heated and the lid can be easily opened.

[0014]

The present invention is a cylindrical plastic container in which the container body and the lid are closed in a fitting manner, and the lid is a fitting portion of the container body at the fitting portion where the container body and the lid fit. It is configured such that it can be rotated along the circumferential groove portion and the side wall portion that form the groove, and that at least one recess (dent) is formed in the fitting portion of the container body, and the side wall portion is stepped. Thus, the container body and the lid are well fitted and closed so that the lid does not fly when heated and the lid can be easily opened. That is, when the container body of the present invention is filled with food, and the lid is covered with a microwave oven or a heating kettle, the lid is manually rotated by about 45 degrees in advance so that the flange portion of the lid and the recessed portion of the container body. If you open it in a microwave oven or a heating pot after forming the opening, the water vapor and air generated in the container will be released through the opening as a passage, so the lid will not fly off due to internal pressure. To be heated. Therefore, the inside of the microwave oven will not be contaminated with the juice from the food material. When eating this, the lid can be easily removed by pulling up on the lid flange.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 6 is a view showing a conventional outer fitting type container. FIG. 1 is a vertical sectional view of the entire container in FIGS. As shown in FIG. 1, according to the present invention, the container body 11 is formed by vacuum-molding a sheet of polypropylene resin filled with calcium carbonate from a bottomed circular bottom having a diameter of 150 mm at its upper end to a cylindrical depth. An L-shaped fitting portion 3a having a body portion 6a of 5 cm and a peripheral groove portion 5a having a width of about 5 mm and a side wall portion 4a having a depth of about 5 mm is formed on the periphery of the body portion. It was molded so as to have a flange portion 2a with an R-shaped corner.

The container body 11 has a cylindrical shape with a diameter of 150 mm of the above-mentioned opening, and is lifted from the peripheral edge of the bottom to an R shape to form a body portion 6a having a depth of 7 cm.
a is formed. As shown in FIG. 2, the fitting portion 3a is composed of a peripheral groove portion 5a having a width of 5 mm with which the fitting portion 3b of the lid is in contact, and a side wall portion 4a having a depth of 5 mm, which is the depth of the fitting portion. Is forming. And 2 on the side wall
It is formed to have a step of mm. As shown in FIG. 3, the flange portion 2a is formed to have a flange portion with a width of 5 mm at the periphery and a corner of 20 mm at the corners having an R shape. Ribs 8a are formed on the bottom portion 7a for reinforcement.

As shown in FIG. 3, the container body 11 is provided with symmetrical recesses 10 at four corners of the fitting portion 3a. The flange portion where the concave shape is formed is formed so as to be wider than the edge of the fitting portion by about 20 mm to form a substantially square container.

As shown in FIG. 1, the lid 9 is formed of a polypropylene resin sheet by vacuum pressure forming, and the lower end opening is lowered from the circular ceiling 7b having a diameter of 150 mm into an R shape into a body portion 6b having a depth of about 3 cm. Forming a width of about 5m below
A convex fitting portion 3b consisting of a peripheral groove portion 5b of m and a side wall portion 4b having a depth of about 5 mm, and a peripheral edge portion of which is formed to have a flange portion 2b with a width of 3 mm at the periphery and a corner of 15 mm at the corner. . The side wall 4b is formed to have a step difference of 2 mm so as to correspond to the side wall 4a of the container body 11. Ribs 8b are formed on the ceiling 7b for reinforcement.

FIG. 5 is a part of the sectional view of FIG. 3 and shows a sectional view of a fitting portion where the container body 11 and the lid 9 are fitted in the recess 10. The recess 10 is formed so as to form a dent having a 1/4 spherical shape. This recess serves as a passage for internal pressure generated when the microwave oven is applied.

FIG. 3 is an elevational view of the present invention, showing a state in which the container body is covered with a lid. FIG. 4 is an elevational view when the lid is rotated 45 degrees from the original position. There are 4 openings.

The fit-type easy-open container obtained in this way is filled with food, covered with a lid and closed by hand, and the lid is rotated by about 45 degrees in advance, and the flange portion of the lid and the recessed portion of the container body are closed. After forming the opening mouth with and microwave it,
Water vapor and air generated in the container by heating were released through the open port as a passage, and the lid could be heated without being blown off by the internal pressure. Therefore, the inside of the microwave oven was not contaminated with the juice from the food material. Also, when eating this, the lid was easily removed from the container body by pulling up on the flange of the lid.

[0022]

According to the present invention, the container body is filled with food, the lid is closed, and the lid is previously rotated by about 45 degrees by hand, and the opening of the flange of the lid and the recess of the container body is opened. After forming, if it is put in a microwave oven or a heating pot, the lid will be heated without being blown off by the internal pressure.
Therefore, the inside of the microwave does not get dirty with the juice from food materials. Further, it is possible to provide a fitting type easy-open container in which the lid can be easily removed by pulling up the flange of the lid when eating this.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a plastic container of the present invention.

FIG. 2 is an enlarged view of a fitting portion portion at a broken line portion in FIG.

FIG. 3 is an elevational view showing an embodiment of the plastic container of the present invention.

FIG. 4 is an elevational view when the lid is rotated in FIG.

5 is a partial cross-sectional view taken along with in FIG.

FIG. 6 shows a cross-sectional view of a conventional outer fitting type container.

FIG. 7 is a perspective view of a container according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 2a Flange portion of container body 2b Flange portion of lid 3a Fitting portion of container body 3b Fitting portion of lid 4a Side wall portion of container body 4b Side wall portion of lid 5a Circumferential groove portion of container body 5b Circular groove portion of lid 6a Body part of container body 6b Body part of lid 7a Bottom part of container body 7b Ceiling of lid 8a Rib of container body 8b Lid of lid 9 Lid 10 Recess (concave) 11 Container body

Claims (6)

[Claims] 1. A fitting type easy-open packaging container, characterized in that it is a cylindrical food packaging container in which a container body and a lid are closed in an internally fitting type. 2. A fitting portion at which the container body and the lid are fitted,
The fitting type easy-open packaging according to claim 1, wherein the lid is configured to rotate along the fitting portion of the container body, and at least one recess is formed in the fitting portion of the container body. container. 3. The fitting-type easy-open packaging container according to claim 1, wherein the fitting portion for fitting the container body and the lid is constituted by a peripheral groove portion and a side wall portion. 4. The fitting-type easy-open packaging container according to claim 1, wherein a step is provided on a side wall portion where the container body and the lid are fitted to each other. 5. The opening according to claim 1, wherein the opening is formed in at least one recess formed in the fitting portion of the container body by rotating the lid. Mating type easy-open packaging container. 6. The fitting-type easy-open packaging container according to any one of claims 1 to 5, wherein the food packaging container is a plastic container.