JPH0526013Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is a packaging that is widely used as a disposable simple lunch container, a packaging material for food and other products in supermarkets, various food stores, etc. Concerning containers for use.

[Conventional technology]

This type of packaging container is generally made of polystyrene.
Semi-rigid or hard, solid-walled or foamed-walled, single-layer or laminated plastic sheets such as polypropylene, polyethylene, polyvinyl chloride, etc. are used as the material, and this is processed into sheets using vacuum forming, pressure forming, hot press forming, etc. as appropriate. It is mass-produced by forming into a desired pre-designed container shape using a forming method.

Some containers are made from water- and oil-resistant treated paper and formed into the desired container shape using sheet forming techniques such as heat pressing. There are also thin-walled plastic injection molded products.

Some are without lids, while others have lids.
Containers with lids include those in which the lid is separate from the container body, and those in which the lid is connected to the container body via a hinge connection so that the lid can be freely rotated to open and close.

[The problem that the idea aims to solve]

The present invention relates to a packaging container with a lid, the lid of which is a fitting lid separate from the container body.

In this type of packaging container, the structure for closing the container body is generally such that the outer peripheral edge of the opening of the container body 1 is a substantially horizontal outwardly projecting flange edge 15a of an appropriate width as shown in FIG. In order to give rigidity to the outer periphery of the flange edge, a lower bent edge 15b of an appropriate width is further formed on the outer periphery of the flange edge as shown in FIG. A substantially horizontal flange portion 2 that fits and engages with the same 15a and 15b from above.
5a and a downwardly bent engagement edge 25b on its outer periphery, and the lid body is attached to the container body 1 by fitting the outer periphery edge on the lid body 2 side to the outer periphery edge on the container body 1 side. 2 is fitted quite firmly and is held in place without coming off.

However, this lid-closing structure requires relatively much time and effort to close and open the lid. In other words, the lid is placed between the container body 1 side and the lid body 2.
It is relatively time-consuming because the outer peripheral edges of the sides must be fitted all around each other. The larger the container, the more difficult and time-consuming it is to close it. Once the lid is closed, the lid 2 fits firmly against the container body 1 and is held in place without coming off, which makes it difficult to remove the lid, and it takes time and effort to open the lid. It takes.
That is, when opening the lid, the outer peripheral edge of the container body 1 is as shown in FIG.
As shown in Figure b, the outer peripheral edge of the lid body 2 is covered and cannot be used as a finger rest when opening the lid.
Firmly grasp and hold the outer surface of the side wall with one hand, and use the other hand to bend and spread a portion of the outer periphery of the lid body 2 outward to ensure a secure fit with the outer periphery of the container body 1. After removing the container, the lid body 2 is opened by applying force against the fitting force with the container body 1, which makes it difficult to open the lid.
At this time, it was easy for the container to shake violently, causing the contents to be disarranged, or for the container to slip out of the user's hands. In particular, when the container body 1 is of a thin plate shape (tray shape) as shown by the two-dot chain line in FIG. requires even more effort.

The present invention is also a packaging container consisting of a container body and a separate fitting lid, but even if it is a large container or the container body is thin plate-shaped, the lid can be opened and closed. To provide a practical product which has advantages such as being easy to close the lid, and furthermore, the fitted lid is kept in a stable closed state and is difficult to come off naturally. Another object of the present invention is to enable the lid to be used as an insulating dish for keeping warm or cold by combining the lid with the container body after opening the lid.

[Means to solve the problem]

The present invention is a packaging container consisting of a container body 1 and a separate fitting lid 2, and the container body 1 has a stepped portion 1a on the outer periphery of its opening that receives the lower surface of the outer periphery of the lid. , an upwardly projecting edge 1b on the outside thereof, and the lid body 2 has an outer circumferential shape substantially corresponding to the inner circumferential shape of the outer circumferential convex edge 1b of the container body 1, and an inner circumferential surface of the outer circumferential convex edge 1b of the container body 1, And when the lid 2 is fitted into the opening of the container main body 1 inside the opening's outer periphery convex edge and closed at at least two approximately 180° opposing positions on each of the outer periphery 2a of the lid 2, Concave portion 1c and convex portion 2 that fit closely together to prevent lid 2 from coming off
b, and the lid body 2, which is opened and turned over, is attached to the four corners of the container body 1 on the bottom plate side and the four corners of the lid body 2 on the opening side.
When the container body 1 is placed on top and pressed down, a convex portion 1d and a concave portion 2c fit together to prevent the container body 1 from coming off.
The main point is that this has been established in correspondence with the above.

[Effect]

That is, in the present invention, the lid body 2 is made into a drop-lid form with respect to the opening of the container body 1, and the lid is closed by the lid body 2.
is aligned with the inner side of the outer peripheral convex edge 1b of the opening of the container body 1, and pushed in against the tightness of the fit to some extent due to the presence of the convex portion 2b. Then, the lower surface of the outer periphery 2a of the lid body 2 comes into contact with and is received by the receiving step surface portion 1a on the side of the container body 1, and the outer periphery convex edge 1 of the container body 1
The concave portion 1c and the convex portion 2b, which are formed at least approximately 180° at two positions on the inner circumferential surface of b and the outer circumferential edge 2a of the lid body 2, are closely fitted to each other, and the lid body 2 is not removed. The lid is locked and the closed state is maintained stably. That is, the lid can be simply, quickly, and reliably closed by simply aligning the lid 2 with the inner side of the outer circumferential convex edge 1b of the opening of the container body 1 and pushing it in, regardless of the size of the container.

To open the lid, grasp and hold the outer surface of the side wall of the container body 1 with one hand, or if the container body 1 is shallow and difficult to grasp, open the lid 2 fitted into the opening of the container body 1. External convex edge 1 on the container body side
b is exposed in the shape of a picture frame, so pinch and hold the convex edge 1b with your fingers, grasp the outer surface of the side wall of the lid body 2 with the other hand, and lift the lid body 2 by slightly retracting it and lifting it. The close fitting between the retaining recess 1c and the protrusion 2b is released, or the fitting force is weakened, and the lid 2 can be easily removed. Also, if the container with the lid closed is slightly twisted, the lid 2 will be twisted against the container body 1,
The mutual fitting between the lid detachment preventing recess 1c and the protrusion 2b is naturally released, and the lid 2 is easily removed. That is, the lid can be opened easily and stably without any effort, regardless of the size of the container, whether it is a deep container, a shallow container, or the like.

When the removed lid 2 is turned over and the container body 1 is placed on top of it and pressed down, each of the convex portions 1d on the outside of the four corners of the container body 1 is inserted into each concave portion 2c on the inside of the four corners on the lid 2 side.
are fitted and fixed, and the lid body 2 becomes a base for the container body 1.

Since a heat insulating air space S is formed between the lid body 2 integrated on the lower surface of the container body 1 and the container body 1, the temperature of the packaged object can be maintained for a long time.

〔Example〕

The containers shown in Figures 1 to 4 are designed to be used for packaging and selling steaks, hors d'oeuvres, etc., and the container body 1 and lid 2 both have a thickness of 0.3 mm.
It is a sheet-formed product made by vacuum forming etc., made from a relatively rigid low-foam polystyrene sheet of about mm.

The container body 1 is a rectangular shallow dish-shaped container with rounded corners, and has a stepped portion 1a on the outer periphery of the opening that receives the lower surface of the outer periphery of the lid, and an upwardly convex edge 1b on the outside thereof.
It is equipped with. Further, the inner surfaces of the four corners of the outer circumferential convex edge 1b are slightly recessed to provide recesses 1c.

The lid body 2 has an outer circumferential shape that roughly corresponds to the inner circumferential shape of the outer circumferential convex edge 1b of the container main body, and has a top surface that is greatly raised upward, with the four corners of the outer circumferential edge 2a slightly outward. It is provided with a projecting portion 2b.

The lid is closed using the lid body 2 as explained in the section of the function above.
When the bottom surface of the outer circumferential edge 2a of the lid body 2 is aligned with the inside of the outer circumferential convex edge 1b of the opening of the container body 1 and pushed in against the tightness of the fit to some extent due to the presence of the convex portion 2b, the lower surface of the outer circumferential edge 2a of the lid body 2 is aligned with the inner side of the outer circumferential convex edge 1b of the opening of the container body 1. The outer circumferential edge 2a of the lid body 2 is abutted against and received by the receiving step surface 1a (FIG. 3), and the outer circumferential edge 2a of the lid body 2 is held in each concave portion 1c at the four corners of the outer circumferential convex edge 1b of the container body 1.
The convex portions 2b at the four corners of are closely fitted (fourth
(Fig.), the lid body 2 is prevented from coming off, and the closed state is stably maintained.

The lid can be opened easily and stably in the manner described in the section of the operation above.

In the container body 1, 1d is a convex portion formed by bulging outward the four corners of the bottom plate side of the container body, and a lid body 2.
2c denotes each convex portion 1 on the container body 1 side, which is formed by recessing the inside of the four corners on the opening side of the lid.
This is a recess corresponding to d.

After opening the lid, turn the lid 2 over, place the container body 1 on top of it, and press down (Fig. 5).
The recesses 1d at the outer four corners of the container body 1 are fitted into the recesses 2c at the inner four corners of the side (Fig. 6), and the container body 1 and the lid 2 are integrated, and the lid 2 stabilizes the container body 1. It functions as a pedestal. In addition, since an insulating air space S is formed between the container body 1 and the lid 2 integrated as a pedestal therebelow, in the case of this embodiment, the container material is a foamed plastic sheet that itself has heat insulating properties. In addition to this, when the object W to be packaged is warm, such as a grilled steak, its warmth can be maintained for a long time.

[Effect of idea]

Since the packaging container of the present invention has the above structure,
It is easy to close and open the lid, and the closed state is maintained stably, so that the intended purpose is well achieved. Furthermore, after removing the lid, by assembling the lid to the back side of the container body, the pedestal of the container,
Moreover, it can also be used as a heat insulating plate, which has the effect of expanding the range of uses of the packaging container.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the packaging container according to the present invention, in which FIG. 1 is a plan view of the container body, FIG. 2 is a plan view of the lid, and FIG. 3 is a top view of the lid. FIG. 4 is a cross-sectional view of the recess and convex portion of the lid that is tightly fitted to each other, and FIG. 5 is a vertical side view of the container in the state in which the lid has been removed and is connected to the container body as a base. A vertical side view, FIG. 6 is a sectional view of a coupling recess and a convex portion, and FIGS. 7a and 7b are sectional views of essential parts of a conventional example of a lid structure. 1... Container body, 2... Lid body.

Claims (1)

[Scope of Claim for Utility Model Registration] A packaging container consisting of a container body 1 and a separate fitting lid 2, wherein the container body 1 receives the lower surface of the outer periphery of the lid at the outer periphery of its opening. The lid body 2 has a stepped surface portion 1a and a convex edge 1b facing outward. The inner circumferential surface and the outer circumferential edge 2a of the lid body 2 are each at least approximately 180° opposed to each other 2
When the lid 2 is fitted into the opening of the container main body 1 inside the convex outer periphery of the opening and closed, the recess 1c fits closely with each other and prevents the lid 2 from coming off.
and a convex part 2b, when the container body 1 is placed on the lid 2 which has been opened and turned over and pressed down, the four corners of the bottom plate side of the container body 1 and the four corners of the lid body 2 on the opening side A packaging container characterized in that a convex portion 1d and a concave portion 2c are provided in correspondence with each other to fit together and prevent the container body 1 from coming off.