JP2000272647A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container wherein a main body and a lid body before a content is filled, can be stacked under a stable state, a packing work can be performed without trouble, and in addition, after a juicy daily dish is packed, the juice can be prevented from leaking to the outside, by a simple structure. SOLUTION: A raised string for fitting is constituted of a lower raised string section 13 which rises into substantially truncated chevron shape first from the base surface 12 of a main body 10A or a lid body 10B when seen from the cross section in the direction being orthogonal to the axis, and an upper raised string section 14 which is formed on the upper end of the lower raised string section 13, and of which the upper end is closed, and the inner diameter of the lower raised string section 13 is made approx. the same as the outer diameter of the upper raised string section 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container comprising a main body and a lid molded from a synthetic resin sheet, and more particularly, to a packing ridge formed on the main body and the lid to prevent liquid leakage. The present invention relates to a packaging container that fits with each other.

[0002]

2. Description of the Related Art When a transparent synthetic resin sheet is used, the contents of a packaging container comprising a main body and a lid molded from a synthetic resin sheet can be easily checked, and can be manufactured at low cost. In addition, various things have been proposed since the hermetically sealed state of the things packed in the main body can be completely maintained, which is convenient. In this case, it is necessary to ensure that the juice does not easily come out to the outside when packaging a substance having a lot of juice such as a boiled dish.

[0003] As a conventional packaging container from which the juice does not come out, there is a "fitting container" as proposed in Japanese Patent No. 2790794, for example. In this conventional fitting container, as described in the claims of the above publication, "the cross-sectional shape of the hollow ridge 35 is changed from the rim 35a and the substantially circular bulging portion 35b provided at the tip thereof. Keyhole shape, the connecting portion between the rim 35a and the bulging portion 35b is a constricted portion 35c, and the hollow ridge 45 is substantially similar in shape to the hollow ridge 35, so that at least the bulging portions are elastically pressed against each other. The shape is as shown in FIG. If such hollow concave stripes 45 are fitted to the hollow convex stripes 35, it is possible to prevent juice from the prepared food stored in the main body from leaking out. In other words, in this conventional packaging container, after the prepared foods and the like are stored in the main body, the hollow ridges 45 and the hollow ridges 35 are used to mechanically fit each other. is there.

[0004] However, the conventional fitting container shown in FIG. 8 has a problem that the stacking of the main body and the lid cannot be performed well. In other words, in this type of packaging container, since the contents are mechanically packed, the main body is the main body, and the lid is a large number of the lids that are previously stacked. The concave ridges 45 or the hollow convex ridges 35 overlap each other. As shown in FIG. 8, the hollow concave ridges 45 and the hollow convex ridges 35 are arc-shaped in cross section when viewed in a direction perpendicular to the axis, so that the stacking of the main body and the lid, that is, the stacking is stable. It is difficult to do it in a state where

[0005] If the stacking is not stable, for example, a large number of the main bodies stacked high will be inclined or fall. In such a state, each of the main bodies cannot be mechanically removed, and the stuffing operation must be stopped on the spot.

[0006] Such a problem is discussed in Japanese Utility Model Publication No. 7-20034.
The same applies to the “fitting container” proposed in the above publication. That is, in the “fitting container” described in Japanese Utility Model Publication No. 7-20034, as shown in FIG.
"The lower side surface of the ridge has an inverted tapered shape, and the upper side surface following the shoulder has a sharp mountain shape up to the apex", which causes the same problem as the conventional one shown in FIG. It has become.

In other words, since the fitting ridges in the conventional packaging container shown in FIGS. 8 and 9 have the same upper and lower shapes as shown in FIG. And thus lacks stability. That is, since the synthetic resin material originally has a small friction coefficient, if a point (line) comes into contact when stacking as shown in FIG. It becomes.

Therefore, the inventor of the present invention can perform stacking before packing contents in a stable state on the assumption that arc-shaped fitting ridges are used to prevent liquid leakage. What to do
As a result of various studies, the present invention has been completed.

[0009]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above circumstances, and the problem to be solved is, of course, to be able to prevent liquid leakage. Is performed in a stable state.

That is, the object of the invention according to claim 1 is that the main body and the lid before filling can be stacked in a stable state, and the filling operation can be performed without any trouble. An object of the present invention is to provide a packaging container having a simple structure that can prevent juice from leaking out after packing a juicy side dish or the like.

The object of the invention according to claim 2 is to achieve not only the object of the invention according to claim 1 but also to further improve liquid tightness to prepare a juicy side dish or the like. An object of the present invention is to provide a packaging container that can prevent juice from leaking further after being packed.

[0012]

Means for Solving the Problems In order to solve the above problems, means according to the first aspect of the invention will be described with reference numerals used in the description of the embodiments described below. Main body 10A and lid 1 molded from synthetic resin sheet
0B, and a package in which the liquid material stored inside is prevented from leaking to the outside by fitting the entire circumferential annular fitting ridges 11a and 11b formed on the main body 10A and the lid 10B. In the container for fitting, the projection 11a
When the 11b is viewed in a cross section in a direction perpendicular to the axis thereof, a lower ridge 13 rising first in a substantially C shape from the base surface 12 of the main body 10A or the lid 10B, and the lower ridge 13 The upper ridge 14 is formed at the upper end of the portion 13 and is closed at the upper end, and the inner diameter of the lower ridge 13 is substantially the same as the outer diameter of the upper ridge 14. Packaging container ".

That is, in the packaging container according to the first aspect of the present invention, fitting for preventing liquid leakage from the inside of the main body 10A is prevented by the fitting ridges 11a and 11b. , These fitting ridges 11a, 11
As shown in FIGS. 3 to 6, as shown in FIGS. 3 to 6, a lower ridge 13 that first rises in a substantially C shape from the base surface 12 of the main body 10 </ b> A or the lid 10 </ b> B, The upper ridge 14 is formed and the upper end is closed. Note that the upper ridge portion 14 is also formed to be continuous with the lower ridge portion 13 via another rising portion.

By doing so, the main body 10A
When the lid 10B is stacked on the main body 10A, if the lid 10B is stacked on the lid 10B, for example, as shown in FIGS.
It will come into contact with the inner surface of the lower protruding portion 13 of 0A exactly. That is, when the stacking is performed, the upper ridges 14 enter the lower ridges 13 and come into surface contact with each other, which secures the stability at the time of stacking. That is, although this packaging container is formed of a synthetic resin sheet having a small coefficient of friction, since the upper ridges 14 enter the lower ridges 13, it is possible to prevent mutual slippage. You can.

Further, the fitting ridges 11a and 11b
Since the inner diameter of the lower ridge 13 is made substantially the same as the outer diameter of the upper ridge 14, the upper and lower ridges 13 The outer surface of the portion 14 comes into complete contact with the inner surface of the lower protrusion 13. Moreover, the cross-sectional shapes of the upper and lower protruding ridges 13 and 14 constituting the fitting ridges 11a and 11b are
Since it has a circular arc shape as shown in FIG. 5 or a rectangular cross section as shown in FIG. 6, the fitting operation can be performed easily, and the airtightness for preventing liquid leakage is sufficient. It is.

Therefore, according to the packaging container according to the first aspect of the present invention, the main body 10A and the lid 10 are not filled.
The body B can be stacked in a stable state, and the fitting operation of the lid 10B to the main body 10A can be performed without any trouble as well as the operation of packing the side dishes and the like in the main body 10A. Moreover, since this packaging container is formed by fitting the fitting ridges 11a and 11b together and integrating them, after packing the juicy side dish or the like, the juice should not leak out. You can do it.

According to a second aspect of the present invention, there is provided the packaging container according to the first aspect, wherein each of the upper and lower ridges 13 and 14 has an arc-shaped cross section. It is.

That is, in the packaging container according to the second aspect, the upper and lower ridges 13 and 14 constituting the fitting ridges 11a and 11b have an arc-shaped cross section. So that the upper ridge 14
Is completely in contact with the inner surface of the lower ridge portion 13 with an area sufficient to maintain liquid tightness. Moreover, since the cross-sectional shapes of the upper and lower protruding ridges 13 and 14 constituting the fitting ridges 11a and 11b are arc-shaped, the fitting operation can be easily performed.
This is to ensure sufficient sealing to prevent liquid leakage.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Next, each invention constructed as described above will be described based on the packaging container of the embodiment shown in the drawings. Since the invention substantially includes the invention, the following description will focus on the packaging container of this embodiment.

FIGS. 1 and 2 are plan views of a lid 10B and a main body 10A embodying the present invention. And
In this packaging container, as shown also in FIG.
11b is formed.

As shown in FIGS. 3 and 4, each of the fitting projections 11a and 11b has a base surface 1A of the main body 10A or the lid 10B when viewed in a section perpendicular to the axis thereof.
A lower protruding ridge 13 rising first in a substantially C shape from 2;
The upper ridge 13 is formed at the upper end of the lower ridge 13 and is closed at the upper end. The upper and lower ridges 13 and 14 may have an arc-shaped cross section as shown in FIG. 5, or may have a rectangular cross section as shown in FIG. Good thing. The inner diameter of the lower ridge 13 is the same as that of the upper ridge 14.
The outer diameter is substantially the same as

These fitting ridges 11a and 11b are molded at the same time when the main body 10A or the lid 10B is molded from a synthetic resin sheet. Since the cross-sectional shape of the portion 14 is basically an arc or a square, the so-called "die-cutting" can be easily performed. In other words, the fitting ridges 11a and 11b can be easily fitted to each other, and a sufficient airtightness for preventing liquid leakage can be secured.

[0023]

As described in detail above, according to the first aspect of the present invention, as shown in the above embodiment, the cross-section of the fitting ridges 11a and 11b in the direction orthogonal to the axis thereof is provided. When viewed from the main body 10A or lid 10
A lower ridge 13 that first rises in a substantially C shape from the base surface 12 of B, and an upper ridge 14 formed at the upper end of the lower ridge 13 and closed at the upper end. , The inner diameter of the lower protruding portion 13 is made substantially the same as the outer diameter of the upper protruding portion 14. " A packaging container that can be stacked in a stable state, can be stuffed without trouble, and can prevent juice from leaking out after stuffing juicy side dishes. Can be provided by a simple structure.

Further, in the invention according to claim 2, the packaging container according to claim 1 is characterized in that "the cross-sectional shape of each of the upper and lower ridges 13 and 14 is arc-shaped." There is the above feature, and thereby, the object of the invention according to claim 1 can be achieved, and further, the liquid tightness is further improved, and after the succulent foods and the like are packed, more juice can be obtained. It is possible to provide a packaging container capable of preventing leakage to the outside.

[Brief description of the drawings]

FIG. 1 is a plan view of a lid constituting a packaging container according to the present invention.

FIG. 2 is a plan view of a main body constituting the packaging container.

FIG. 3 is a front view of a right half of a cross section of a state in which a lid is fitted to a main body constituting the packaging container.

FIG. 4 is an enlarged partial sectional view showing a main part of FIG. 3;

FIG. 5 is a schematic cross-sectional view illustrating a stacking state of a lower protruding portion and an upper protruding portion having an arc-shaped cross section for explaining the operation of the present invention.

FIG. 6 is a schematic cross-sectional view illustrating a stacking state of a lower ridge portion and an upper ridge portion having a rectangular cross section for explaining the operation of the present invention.

FIG. 7 is a partially enlarged sectional view showing a problem of a conventional fitting ridge.

FIG. 8 is a partially enlarged sectional view showing a fitting portion of a conventional container.

FIG. 9 is a partially enlarged sectional view showing a fitting portion of another conventional container.

[Explanation of symbols]

 10A Body 10B Lid 11a Fitting ridge 11b Fitting ridge 12 Base surface 13 Lower ridge 14 Upper ridge

Claims (2)

[Claims] 1. A liquid material which is composed of a main body and a lid molded from a synthetic resin sheet, and which is fitted inside the main body and the lid to form an annular fitting ridge. In the packaging container that does not leak to the outside, when the fitting ridge is viewed in a cross section in a direction perpendicular to the axis thereof, it first has a substantially C shape from the base surface of the main body or the lid. A lower ridge that rises, and an upper ridge that is formed at the upper end of the lower ridge and whose upper end is closed, further comprises an inner diameter of the lower ridge, A packaging container characterized in that the outer diameter of the ridge is substantially the same. 2. The packaging container according to claim 1, wherein each of the upper and lower ridges has an arc-shaped cross section.