JPH04201863A - Packaging container - Google Patents

Abstract

PURPOSE:To make lids difficult to deform when they are held with the hand or stacked and the display of containers stacked in a multiple tier easy by extending a continuous projection part adapted to make contact with the side part of a lid and the inner surface of the top panel thereof when the lid is closed from a predetermined area of the upper edge of a container body. CONSTITUTION:A continuous projection part 2 is formed on and slightly inwardly of a flange 7 extending along the upper edges of three sides of a container body 1 and upwardly from at least 1/2 of the area of the upper edge thereof. When the lid 3 is closed, the outer surface of the projection part 2 makes contact with the inner surface of the side part 6 of the lid 3 and the top surface thereof makes contact with the inner surface of the top panel 5 of the lid 3. Accordingly, the side part 6 and top panel 5 of the lid 3 are supported by the projection part 2. In the case of the container body 1 formed of synthetic resin sheet, the projection part 2 is formed by a pressure or vacuum forming method simultaneously with the formation of the container body 1. In this case, a downwardly opening recess part 8 is defined by an inner space of the projection part 2 and can be used as a handle by inserting the fingers thereinto when the container is held.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a packaging container used as a disposable packaging material for, for example, food packaging, and particularly relates to a packaging container in which at least the lid is made of a sheet material. .

[Prior Art] Conventionally, packaging containers made of synthetic resin sheet moldings have been known as disposable packaging containers used for food packaging and the like.

FIG. 4 shows an example of a packaging container for the synthetic resin sheet molded product, in which a low protrusion 2 is formed around the upper edge of the main body 1, and a step is formed around the lower edge of the lid 3. A portion 4 is provided, and when the lid body 3 is closed, the protruding portion 2 and the step portion 4 are fitted together.

Fig. 4 above shows an example in which both the main body 1 and the lid 3 are made of synthetic resin sheets.In addition, the main body 1 may be made of a synthetic resin foam board or an injection molded product, and only the lid 3 portion is made of synthetic resin sheets. There are also many synthetic resin sheet molded products designed to reduce costs.

[Problems to be Solved by the Invention] However, when the lid 3 is made of a sheet material such as a synthetic resin sheet molded product, as shown in FIG. is located above the upper edge of the main body l, when the packaging container is held in the hand,
If you hold it too tightly, you may crush the sides 6 and top 5 of the lid 3, causing it to fall off and damage the contents.Also, when these packaging containers are stacked,
There is also the problem that the lid body 3 is easily deformed and collapses, making it difficult to display.

The above problem is more likely to occur as the depth of the lid 3 (the distance from the upper edge of the main body 1 to the top 5 of the lid 3) increases. Otherwise, the lid body 3 must be made of a thick material, causing design limitations and increased costs.

[Means for solving the problems] The means taken in the present invention to solve the above problems are as follows:
To explain with reference to FIGS. 1 and 2, which correspond to one embodiment, the present invention consists of a main body 1 and a lid 3 made of sheet material, and when the lid 3 is closed, the lid 3 In a packaging container in which the top 5 is located above the upper edge of the main body 1, a series of protrusions 2 that contact the side 6 of the lid 3 and the inner surface of the top 5 when the lid 3 is closed are A measure is taken to form this on the main body 1 in a region corresponding to 1/2 or more of the upper edge of the main body 1.

[Function] The protruding portion 2 in the present invention is in contact with the side portion 6 and the top portion 5 of the lid body 3, and thereby functions to support the side portion 6 and the top portion 5 of the lid body 3, which are easily crushed. be. Further, the protrusion 2 is
When the lid 3 is placed over the main body 1, it also serves to integrate the two.

[Example] An embodiment of the present invention will be explained with reference to FIGS. 1 and 2. FIG.

As shown in the figure, the present packaging container is composed of a main body 1 and a lid 3, each of which has a substantially rectangular plane. Also,
The lid 3 has side portions 6, and the top 5 of the lid 3 is located above the upper edge of the main body 1 when the lid 3 is closed.

In this packaging container, at least the lid 3 is made of sheet material. As this sheet material, for example, a synthetic resin sheet, paper, a synthetic resin film, or a laminate of metal foil and paper can be used, but in order to obtain the display effect of the contents, it is preferable to use a transparent synthetic resin sheet molded product. It is preferable to do so.

The main body 1 may be made of the same sheet material as the lid 3, or may be made of other materials. When the main body 1 is made of a material other than a sheet material, the main body 1 can be made of, for example, a synthetic resin foam or an injection molded product.

A flange portion 7 projecting outward is formed on the upper edge of the main body 1, and a stepped portion 4 that fits into the flange portion 7 is formed on the lower edge of the lid body 3. This flange part 7
The fit between the step part 4 and the step part 4 is to ensure that the lid 3 is tightly closed without shifting from the main body l, but in this packaging container, the projection 2 described later can prevent the lid 3 from shifting. Therefore, the fitting between the flange portion 7 and the stepped portion 4 can be omitted. In this case, since the protrusion 2 prevents the cover 3 from shifting in a relatively loose manner, it is possible to eliminate the difficulty of opening and closing due to catching that is peculiar to fitting.

Further, the inner portions of the flange portions 7 located on three sides of the upper edge of the main body 1 are bulged upward to form a series of protrusions 2.

As mentioned above, the protrusions 2 in this embodiment are provided corresponding to the three sides of the upper edge of the main body 1, but if the protrusions 2 correspond to an area of 1/2 or more of the upper edge of the main body 1, , may be provided corresponding to two or four sides. However, if the lid 3 is made of a transparent material and the main body l is made of an opaque material, in order to maintain the visibility of the contents through the lid 3, the upper edge of the main body 1 should be It is preferable to provide the protrusion 2 only in the area of 415 or less so that a field of view as wide as possible can be obtained.

When the lid 3 is closed, the protrusion 2 has its outer surface in contact with the inner surface of the side 6 of the lid 3, and its upper surface contacts the lid and the top 5 of the body 3.
It touches the inside.

Therefore, when the lid 3 is closed, the side portion 6 and top portion 5 of the lid 3 are supported by the protruding portion 2.

When the main body 1 is a synthetic resin sheet molded product, the protrusion 2 is formed simultaneously with the molding of the main body 1 by pressure forming or vacuum forming.In this case, the inside of the protrusion 2 has a downward opening. This becomes a recess 8. If the recess 8 opens downward in the flange 7 of the main body l, as shown in the figure, by inserting the tip of your finger into the recess 8 when holding the packaging container, you can use it as a flat part. Can be used.

The shape of the upper part of the protruding part 2 in this embodiment is almost flat, and its upper surface is in contact with the inner surface of the top part 5 of the lid body 3 over almost the entire length. , it can also be curved or corrugated.

Furthermore, with reference to FIG. 3, another example of the planar shape and formation position of the protrusion 2 will be described.

FIG. 3(a) shows a case where the planar shape of the main body 1 is approximately fan-shaped, and the protruding portion 2 is formed along two opposing arcuate sides and one straight side.

FIG. 3(b) shows a case in which the planar shape of the main body 1 is a quadrangle, similar to that explained in FIG. 1, but the protrusion 2 is formed along three sides. , it has cut into both sides of the remaining side.

3(C) and (d) each show the case where the planar shape of the main body 1 is circular, and the protrusion 2 in FIG. 3(C) is formed slightly inside the main body 1 in a U-shape. in this case,
The protrusion 2 can be formed by bulging the bottom of the main body 1 upward.

The protrusion 2 in (d) is formed in an arc shape along the outline of the main body 1.

[Effects of the Invention] The present invention is as described above, and has the following effects.

(1) Since the side portion 6 and top portion 5 of the lid 3 are supported by the protruding portion 2, the lid 3 is unlikely to be crushed when held in the hand or stacked. Therefore, it is possible to prevent the contents from being dropped or damaged due to the lid body 3 being crushed, making it easier to hold and displaying items by stacking them in multiple tiers.

(2) Even if the depth of the lid 3 is increased, the lid 3 can be prevented from bulging by using a thin material without providing a reinforcing rib, so packaging containers of various designs can be provided at low cost. .

(3) Since the depth of the lid 2 can be increased, the entire packaging container can be thickened and its substantial volume can be increased.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the packaging container according to the present invention, Fig. 2 is a longitudinal sectional view of the packaging container with its lid closed, and Fig. 3 (
FIG. 4 is a vertical cross-sectional view showing the prior art. l2 main body, 2: protrusion, 3: lid, 4: step, 5: top, 6. Side part, 7: flange part, 8: recessed part. Figure 3(a) (
b) (C)
(d) Figure 4

Claims (1)

[Claims] 1) Consists of a main body and a lid made of sheet material,
In a packaging container in which the top of the lid is located above the upper edge of the main body when the lid is closed, a series of protrusions that contact the sides of the lid and the inner surface of the top when the lid is closed. A packaging container characterized in that a portion is formed on the main body so as to correspond to an area of 1/2 or more of the upper edge of the main body.