JP4239194B2 - Food packaging container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention swells a synthetic resin sheet material, and the container body and the lid are integrally connected and formed via a bent portion, and accommodates foods such as vegetables, fruits, confectionery and eggs. It relates to a container for food packaging.
[0002]
[Prior art]
Food packaging containers formed by bulging and molding such synthetic resin sheet materials are generally well known. Conventionally, when a container for food packaging is opened after purchase and a part of the food is taken out and then the rest is stored, the lid is folded at the position of the folding portion in order to keep the container closed again. Cover the container body from above, and close the outer peripheral edge of the overlapping container body on the free end side and the outer peripheral edge on the free end side of the lid with a staple, or by applying a rubber band to the entire container. It took time-consuming work.
[0003]
In view of such a situation, as one of means for easily closing a once opened container, as shown in FIG. 6, a protrusion 4 is provided on either one of the container body 1 and the lid body 2. On the other hand, a food packaging container has been developed in which a fitting recess 5 for receiving the projection 4 is formed and the projection 4 and the fitting recess 5 are relatively fitted in a closed posture. In the past, people have filed this type of application and are well known. (Japanese Patent Application 2001-030379 etc.)
[0004]
[Problems to be solved by the invention]
However, the container closing means for forming the projection 4 on one of the container body 1 and the lid 2 and the fitting recess 5 for receiving the projection 4 on the other is shown in FIG. As described above, the protrusion 4 having the portion 41 having the maximum width on the way to the tip and the fitting recess 5 having the portion 51 having the maximum width on the way to the deep portion are formed. The width of the portion 41 is larger than the width of the opening 7 of the fitting recess 5, and the projection 4 and the fitting recess 5 are relatively fitted in the closed posture. is there.
[0005]
In this type of closing means, when the lid is closed, the lid body 2 is bent at the position of the bent portion 3 and covered from the top of the container body 1, and when the projection 4 is fitted into the fitting recess 5, The projection 4 is inserted into the fitting recess 5 so that the opening 7 is elastically expanded. As shown in FIG. 8, the free end side of the container body 1 and the lid body 2 with the momentum of insertion. The peripheral edges come into contact with each other, and the protrusion 4 enters the fitting recess 5 deeply, and a gap is formed between the side surface 42 of the protrusion 4 and the inner surface 52 of the recess of the fitting recess 5. The joint recess 5 does not fit closely, and the fitting state is unstable and the container is not stable. As a result, there is a problem that the load applied to the protrusion 4 and the fitting recess 5 of the fitting portion is increased.
[0006]
Therefore, the present invention is intended for a food packaging container closing means for forming a protrusion on one of the container body and the lid and a fitting recess for receiving the protrusion on either of the containers, after the container is opened once. An object of the present invention is to provide a food packaging container that can be easily closed even when it is closed, and that allows the protrusion and the fitting recess to be closely fitted in a closed posture.
[0007]
[Means for Solving the Problems]
In order to solve this problem, the container for food packaging according to the present invention is formed by bulging and molding a synthetic resin sheet material, and the container body 1 and the lid body 2 are integrally formed through a bent portion 3. A food packaging container, wherein a projection 4 is formed on one of the container body 1 and the lid 2, and a fitting recess 5 for receiving the projection 4 is formed on the other; Or the convex part 6 is formed in the peripheral part of the both sides of the fitting recessed part 5, and the said protrusion 4 has the part 41 used as the maximum width in the middle toward the front-end | tip, and the said fitting recessed part 5 is also in the middle toward the deep part. In the closed position, the projection 4 and the fitting recess 5 are relatively fitted, and the projection 6 has the projection 4 on the opening 7 side of the fitting recess 5. the pull-off, the projections 4 and the fitting concave portion 5 is, match fitting contact in the vicinity of the opening 7 of the fitting recess 5 It is obtained by a structure in which an action to separate the position.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In carrying out the present invention, it is essential that the protrusion 4 formed on either the container main body 1 or the lid body 2 in the configuration has a portion 41 having a maximum width on the way to the tip. As a requirement, it can be carried out in a shape such as a substantially kamaboko type, a substantially acorn type, a substantially cylindrical type, or a substantially rectangular type. On the other hand, the fitting recess 5 formed in any one of the other is required to have a portion 51 having the maximum width in the middle toward the deep part, and is relatively fitted with the protrusion 4 in the closed posture, and When the projection 4 and the fitting recess 5 are separated from each other by the convex portion 6, it can be carried out with a size and a shape in which both can be closely fitted.
[0009]
Further, the convex portion 6 formed in the peripheral portion of the protrusion 4 or the fitting concave portion 5 referred to in the above configuration has an effect of being separated to a position where the protrusion 4 and the fitting concave portion 5 are closely fitted. Can be implemented in various shapes such as a hemispherical shape, a square shape, a cylindrical shape, and a pyramid shape.
[0010]
In forming the container body 1 and the lid body 2, a predetermined shape is imparted by using a blow molding means or a vacuum molding means using a conventional synthetic resin sheet material such as PET (polyethylene terephthalate). Do it.
[0011]
【Example】
The details of the present invention will be described below based on the embodiments shown in the drawings. 1 to 4 are views showing a food packaging container according to a first embodiment of the present invention. FIG. 1 is a perspective view of the container in the opened state, and FIGS. 2 to 4 are enlarged end views of the fitting portion when the container is closed and in the closed state.
[0012]
In the food packaging container shown in the embodiment, a sheet material made of polyethylene terephthalate is swelled and molded, and the container body 1 and the lid body 2 are integrally connected via the bent portion 3 as is generally known. It is a container for cherry tomato packaging.
[0013]
Thus, as shown in FIG. 1, the protrusions 4 are formed one by one in the vicinity of both corners of the free end side peripheral portion of the lid body 2, and the free end side peripheral portion of the container body 1 is opposed to the position. Two fitting recesses 5 for receiving the protrusions 4 are formed. Moreover, the convex part 6 is formed in the fitting recessed part 5 of the said 2 places 1 each on both sides, respectively.
[0014]
As shown in FIG. 2, the shape of the projection 4 and the fitting recess 5 is substantially a semi-cylindrical shape. The fitting recess 5 can receive the projection 4 in the closed position, and the projection 4 is on the way to the tip. The fitting recess 5 has a portion 51 having the maximum width on the way to the deep portion, and the width of the portion 41 having the maximum width of the protrusion 4 is the fitting recess. 5 is larger than the width of the opening 7.
[0015]
Next, the lid body 2 is bent at the position of the bent portion and covered from the top of the container body 1 to form the closed posture, and the action state of the fitting portion is shown in FIG. 2 to FIG. This will be described with reference to the drawings.
[0016]
First, when the projection 4 is inserted into the fitting recess 5 from the state shown in FIG. 2, the projection 4 has a structure having a maximum width 41 on the way to the tip, and the width of the maximum width 41 is: Since the width of the opening 7 of the fitting recess 5 is larger than the width of the opening 7, the protrusion 4 is formed by pressing the fitting portion and elastically expanding the opening 7 of the fitting recess 5. It can be made to fit in the fitting recess 5. On the other hand, the fitting recess 5 has a portion 51 having a maximum width on the way to the deep portion. That is, since the deep portion of the fitting recess 5 is formed with a width smaller than the maximum width portion 51, the projection 7 can elastically push and widen the opening 7 of the fitting recess 5 without any trouble. Is called.
[0017]
Then, as shown in FIG. 3, once inserted, the protrusion 4 penetrates deeply into the fitting recess 5 with the moment of insertion so that the opening 7 of the fitting recess 5 is elastically expanded. The protrusion 6 prevents the peripheral edge of the free end side of the container body 1 and the lid 2 from coming into contact with each other, and the protrusion 4 is immediately elastically pulled away from the fitting recess 5. Since the separated protrusion 4 has a structure in which the maximum width portion 41 is larger than the opening 7 of the fitting recess 5, as shown in FIG. The side surface 42 of the protrusion 4 is caught by the recessed portion inner surface 52 of the fitting recessed portion 5 and is locked. Thereby, the close fitting state of the protrusion 4 and the fitting recess 5 is formed.
[0018]
FIG. 5 is a perspective view of the food packaging container according to the second embodiment of the present invention in an opened state. The container for food packaging is an egg packaging container in which a container main body 1 and a lid body 2 are integrally formed through a bent portion 3. The container main body 1 accommodates the lower half of an egg. The egg storage recess 11 is formed in the lid 2 and the egg storage recess 21 for storing the upper half of the egg is formed in two rows and three stages.
[0019]
Thus, as shown in FIG. 5, a protrusion 4 is formed at an intermediate point of the peripheral edge of the free end side of the lid 2, and a fitting recess 5 for receiving the protrusion is relatively fitted to the container body 1 when the lid is closed. The protrusions 6 are formed at the mating positions and one on each side of the fitting recess 5. The operational effects of the protrusion 4, the fitting recess 5, and the protrusion 6 in the closed posture are the same as in the first embodiment.
[0020]
Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. For example, the present invention can be applied to various food packaging containers such as fruits and confectionery as well as the food packaging containers mentioned in the above embodiments. The structure only needs to be relatively fitted in the closed position and closely fit to each other when both are separated by the convex portion 6, and has the above-described constituent requirements according to the present invention, and The object of the present invention can be achieved and modified as appropriate within the scope of the following effects.
[0021]
【The invention's effect】
As is apparent from the above description, the food packaging container according to the present invention has a protrusion on one of the container body and the lid and a fitting recess for receiving the protrusion on the other. The projection has a portion with the maximum width on the way to the tip, and the fitting recess also has a portion with the maximum width on the way to the deep portion, and is relatively fitted in the closed posture. Since it has a structure in which convex portions are formed in the peripheral portions on both sides of the projection or fitting concave portion for a container, it can be easily closed after being opened once as before. However, since the projection and the fitting recess are closely fitted near the opening 7 of the fitting recess 5 , the fitting state is stable, the container body and the lid body do not rattle, and The effect that no extra load is applied to the protrusion and the fitting recess It is.
[0022]
Further, the protrusion formed on the periphery of the protrusion or the fitting recess also serves to strengthen the peripheral portion of the fitting portion, so that the protrusion can be smoothly inserted into the fitting recess. Effects can also be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of the first embodiment in an opened state. FIG. 2 is an enlarged end view of a fitting portion before insertion. FIG. 3 is an enlarged end view of a fitting portion immediately after insertion. FIG. 5 is an enlarged end view of the fitting portion after insertion. FIG. 5 is a perspective view of the second embodiment in the opened state. FIG. 6 is a perspective view of the conventional example in the opened state. Enlarged end view of fitting part [Fig. 8] Same as above, Enlarged end view of fitting part after insertion [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container main body 2 Cover body 3 Bending part 4 Protrusion 41 The part used as the maximum width of a protrusion 5 Fitting recessed part 51 The part used as the maximum width of a fitting recessed part 6 Convex part

Claims (1)

A container for food packaging in which a synthetic resin sheet material is bulged and the container main body (1) and the lid (2) are integrally formed through a bent portion (3), the container A projection (4) is formed on one of the main body (1) and the lid (2), and a fitting recess (5) for receiving the projection (4) is formed on either of the other, and the projection (4) or Protrusions (6) are formed in the peripheral portions on both sides of the fitting recess (5), and the projection (4) has a portion (41) having a maximum width on the way to the tip. (5) also has a portion (51) having a maximum width on the way to the deep portion, and in the closed position, the protrusion (4) and the fitting recess (5) are relatively fitted, and the protrusion ( 6), the projection (4) to detach the opening of the fitting recess (5) (7) side, said protrusion (4) and engaging recess (5) is, the opening of the fitting recess (5) ( A container for food packaging that is structured to pull apart to a close fitting position near 7) .

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