JPH10329868A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the cover from closing by itself on charging hot water and also prevent it from opening unnecessarily, by sealing the peripheral edge of the cover made of plastic film to the upper edge of the container body and forming a folding ruled line on the cover. SOLUTION: A container body 1 is opened at the upper part and formed to have a nearly cylindrical shape with the bottom, widened from the bottom to the opened upper part. And a collar extended outward is formed at the whole outer periphery of the opening of the container body 1. The upper edge of the container body 1 is welded with heat with the peripheral edge of the cover 4 to close the opening. And further, a cutter forming a ruled line is pressed on the cover 4 to form a folding ruled line 5. And a fixing part 6 is protruded to fix it to the collar 3 of the container body 1 at the nearly central part of the arcuate form divided by the ruled line 5. In this way, the cover 4 is prevented from closing by itself when hot water is poured and also prevented from opening unnecessarily.

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 container body for accommodating contents such as instant noodles and cup miso soup, and a lid for closing an upper opening of the container body. The present invention relates to a packaging container in which a part of the container body is opened, hot water or the like is poured, and noodles and the like can be heated and cooked.

[0002]

2. Description of the Related Art Conventionally, in a packaging container as described above,
As a lid for sealing the upper opening of the container body, aluminum foil and paper are combined, and the inner surface of the aluminum foil (container body side)
In addition, a laminated sheet is used in which a resin having a low melting point of 80 to 135 ° C. is extruded and laminated or coated to impart heat sealability.

In such a packaging container, since the lid has aluminum foil, a part of the upper surface opening of the container body is opened, and then the lid at the opened portion is bent to give a folding habit to open the lid. Thus, even if the hot water is poured, the filling operation can be easily performed without the lid body falling down to the closing side of the container body and closing the opening portion of the upper surface opening.

[0004]

However, in the above-described packaging container, after the hot water is poured, the lid is returned to the original position for a predetermined time for cooking and the opening of the container is closed. In addition, since the water of the paper portion of the lid is released and curled (curved) upward due to the heat of the steam of the injected hot water, there is a possibility that the unsealed portion of the upper opening is opened.

In order to solve such a problem, there has been known a packaging container in which a flange is provided on an upper edge of a container body and a bent piece is extended from an outer peripheral edge of a lid (for example, Japanese Utility Model Laid-Open No. 60-163268). Gazette). In such a packaging container, when the lid is closed after the hot water is injected, the bent piece of the lid is bent downward to be engaged with the flange at the upper edge of the container body, and curling upward of the lid is prevented. It is to prevent.

However, even with such a lid, since the bent piece is made of a laminated sheet of aluminum foil and paper, it is curled in the direction of releasing the engagement with the flange by the heat of the hot water inside the container body. As a result, there is a possibility that the lid is opened.
In addition, the operation of bending the bent piece of the lid after pouring hot water is required, and such an operation is complicated.

Further, a method of sticking the lid and the container body separately with an adhesive tape or the like to maintain the closed state (see Japanese Utility Model Application Laid-Open No. 1-11)
[0161] However, such a method is complicated.

In the above-mentioned packaging container, although the container body and the lid can be divided and discarded, the laminated aluminum foil and paper of the lid cannot be divided and discarded. Having.

Accordingly, the present invention has been made to solve such a problem, and it is desired that the lid is not closed without permission when hot water is injected, and that the lid is closed after the hot water is injected. It is an object of the present invention to provide a packaging container which is not opened carelessly.

[0010]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above problems, and a packaging container according to the present invention has a container main body having an opening on the upper surface for accommodating a container 7 such as noodles.
1 and a lid 4 for closing the opening 2 of the container body 1.The lid 4 is made of a plastic film, and a peripheral portion 4a is sealed with an upper edge 1a of the container body 1. In addition, the lid 4 has a bent ruled line 5 formed thereon.

In the packaging container having the above structure, a part of the opening 2 of the container body 1 can be opened by bending the lid 4 along the folding ruled line 5 to stand up. Even if hot water is poured into the container body 1, the lid
4, the opening 2 of the container body 1 is not closed.

Further, in the packaging container according to the first aspect of the present invention, the opening 2 can be closed by returning the lid 4 to the closing side after pouring hot water.
It slightly floats upward due to the steam of the hot water inside, and a gap is formed between the upper edge 1a of the container body 1 and the peripheral edge 4a of the lid 4. For this reason, a locking portion 6 is formed on the lid body 4 so as to protrude downward from the peripheral edge portion and bend inward, as described in claim 2, and the outer peripheral surface of the upper edge 1a of the container body 1 is formed on the outer peripheral surface. It is preferable to form a locked portion 3 capable of locking the locking portion 6. By locking the locking portion 6 and the locked portion 3, the opening of the container body 1 can be reliably closed by the lid 4.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 3,
Reference numeral 1 denotes a container main body in which containers such as foods to be cooked by adding hot water such as instant noodles are accommodated. The container main body 1 has an open top and a bottomed substantially cylindrical shape that extends upward. It has a shape like a letter.

On the outer periphery of the upper edge 1a of the opening 2 of the container body 1,
A flange 3 swelled outward is formed over the entire circumference.

Reference numeral 4 denotes a thin, substantially circular lid having a thickness of 50 to 200 μm. The cover 4 is made of a heat-resistant plastic film having a melting point of 80 to
Resin at 35 ° C. is laminated on the inner surface (container body side) by extrusion lamination. The peripheral portion 4a of the lid 4 is thermally welded to the upper edge 1a of the container body 1 by the resin on the inner surface, and the opening 2 of the container body 1 is closed. The plastic film is made of a stretched polyethylene terephthalate film, a stretched polypropylene film, a stretched polyethylene film, a stretched polystyrene film, or the like.

The lid 4 is formed with a folded ruled line 5 by pressing a ruled line forming blade. The folding ruled line 5 is shown in FIG.
As shown in the figure, the plurality of concave portions 14 and the remaining portions 16 between the concave portions 14 are formed, and a large number of boundary lines between the concave portions 14 and the remaining portions 16 are provided.
As shown in FIG. 4A, 18 is inclined at an acute angle and substantially parallel to the folding ruled line forming direction Y. The folding ruled line 5 has a thickness of the concave portion 14 of 5 to 50 μm.

Further, the folding ruled line is provided on the periphery of the lid 4.
At a substantially central portion of the circular arc section defined by 5, a locking portion 6 that is locked to the flange portion 3 of the container main body 1 is projected.

As shown in FIG. 5C, the locking portion 6
A hanging part 6a protruding below the peripheral edge, and this hanging part
A bent portion 6b bent inward from the lower end of 6a,
The tapered portion 6c is inclined downward and outward from the bent portion 6b.

Here, the hanging part 6a is a flange of the container body 1.
3, and the tapered portion 6c is provided such that the lower end portion is located outside the upper edge 1a of the container body 1.

The packaging container of the present embodiment has the above-described configuration. First, a method of packaging the contents of the packaging container of the present embodiment will be described.

First, as shown in FIG.
1 and a lid 4 are manufactured respectively, and a container 7 such as noodles is stored in the container body 1. The lid 4 is formed by punching a film on which the folding ruled line 5 is formed into a substantially circular shape having a protruding portion serving as the locking portion 6.

Then, the lid 4 formed as described above is
It is placed on the upper edge 1 a of the container body 1, heat-welded, and attached to the container body 1. Lid body attached in this way
As shown in FIGS. 5B and 5C, the projecting portion projecting to the side of FIG. 4 is bent by a bending jig 8 and has a hanging portion 6a, a bent portion 6b, and a tapered portion 6c. Stop
It is transformed into 6. More specifically, as shown in FIG. 5C, the locking portion 6 is heated by being blown with hot air in a state where the locking portion 6 is bent so as to have a hanging portion 6a, a bent portion 6b, and a tapered portion 6c. Then, by being cooled in the bent state, the locking portion 6 is fixed in the above-described form.

Next, a method of using the packaging container in which the contents 7 are packaged as described above will be described.

First, the container body sealed by the lid 4
1 is opened up to the folding ruled line 5 with the locking portion 6.
At this time, in the present embodiment, since the locking portion 6 is provided at a substantially central portion of the arc portion divided by the folding ruled line 5, it can be easily opened with the locking portion 6, Especially the tapered part 6c located at the lower end of the locking part 6.
Is inclined outward, so that the locking between the locking portion 6 and the locked portion 3 (flange portion) can be easily released with the tapered portion 6c. Further, since the lid 4 has a thickness of 200 μ or less, the locking portion 6 is easily bent, and
3 can be easily released. Moreover, since the lid 4 is easily bent, the container body 1 and the lid
4 can be easily released, and the lid 4 can be opened smoothly. In other words, if the lid 4 is hardly bent, the force for opening the lid 4 at the peripheral edge 4a of the lid 4 bonded to the container body 1 is dispersed, and the entire bonding portion between the container body 1 and the lid 4 is removed. At the same time, a peeling force is required. On the other hand, in the packaging container of the present embodiment, the lid 4 is 20
At a thickness of 0 μm or less, the lid 4 itself is formed to be easily bent, so that at the stage of opening, the lid 4 bends, and a force acts on an adhesive portion provided adjacent to the already opened portion, The lid 4 can be opened smoothly.

After opening the folded ruled line 5 as described above,
Hot water is poured from the opened portion. On this occasion,
Since the thickness of the concave portion 14 of the folding ruled line 5 is 50 μm or less, the folding ruled line is
5 is easy to bend along with the lid 4
, It is difficult for the lid body 4 to inadvertently fall to the closing side. In particular, in the present embodiment, since the boundary line 18 of the folding ruled line 5 is inclined as described above, the folded state is easily maintained, and the lid 4 opened as described above returns to the closed position carelessly. Can be prevented. Also, when bent in the bending direction X along the folding ruled line 5, the boundary lines 18 on both sides are formed.
Is inclined on the same side, the remaining part 16 is twisted,
16 do not abut each other.

Then, after pouring hot water as described above,
Return the lid 4 and close the opening again. At this time, since the lid of the present embodiment is made of a plastic film, there is no occurrence of curling due to the release of moisture from the paper portion unlike the conventional lid made of aluminum foil and paper. In addition, since the locking portion 6 is locked with the locked portion 3, it is possible to prevent the lid 4 from being opened carelessly.
Since it is provided substantially at the center of the circular arc section delimited by, the lid 4 on the opened side can be properly prevented from rising. Further, even when the locking portion 6 and the locked portion 3 are locked, the tapered portion 6c of the locking portion 6 is brought into contact with the upper edge 1a of the container body 1 and is simply pressed downward. It has the advantage that it can be performed easily.

After the opened portion is closed for a predetermined time as described above, the lid 4 is detached from the container body 1 and the container body 1 is closed.
You will eat and drink the contents 7 inside.

As described above, the container body 1 and the lid 4 which are no longer needed after eating and drinking are discarded. However, in this embodiment, since only the plastic film is used as the lid 4, it can be discarded separately. is there.

Although the above-described embodiment has the above-described structure, it has the above-mentioned advantages. However, the present invention is not limited to this, and the design can be appropriately changed within the scope of the present invention. The shape and the like of the cover 1 and the lid 4 can be appropriately changed to a rectangular shape in a plan view, for example.

The material of the cover 4 is not particularly limited as long as it is made of a plastic film. However, it is preferable to use a film having a heat resistance of 70 ° C. or more (a film which does not substantially shrink at 70 ° C.). Thereby, when the lid is closed after the hot water is injected, shrinkage, warpage, wrinkles and the like of the lid 4 can be prevented.

In the present invention, the average thickness of the lid 4 is preferably 50 to 200 μm. That is, 50
If it is less than μ, wrinkles or the like may be generated on the entire lid 4 or may be broken (breaked) at the time of opening, and if it is thicker than 200 μ, the lid 4 itself hardly bends and the lid 4 is opened as described above. However, if the thickness is 50 to 200 μm, generation of wrinkles and the like on the lid 4 can be prevented, and the lid can be opened smoothly.

Further, in the present invention, it is possible to provide inexpensive paper with high printability on the upper surface of the plastic sheet of the lid 4.

In the above embodiment, the folded ruled line
Pressing the ruled line forming blade as 5 makes the recess 14 and the rest
16 is adopted, but in the present invention, the folded ruled line is used.
As 5, it is also possible to use a perforation in which a through-hole is formed intermittently. Incidentally, even when the folding ruled line 5 is composed of the concave portion 14 and the remaining portion 16 as in the above-described embodiment, the concave portion 14 can be formed by penetrating and penetrating. However, it is preferable that the product 7 is formed of a thin portion having no through hole as in the above-described embodiment, in consideration of the sealing property of the product 7.

Further, in forming the folded ruled line 5, besides pressing with a ruled line forming blade, for example, a local thin line may be formed by applying a linear heat to be stretched to form a linear thin portion. .

Further, even when the folding ruled line 5 is constituted by a thin portion, the concave portion 14 and the remaining
It is not limited to the one consisting of 16 but a folded ruled line consisting of a concave groove having a substantially constant depth.
No. 455, Japanese Patent Laid-Open No. 1-150
A folded ruled line described in Japanese Patent Publication No. 520 can also be adopted.

However, the folding ruled line 5 is composed of a large number of concave portions 14 and a remaining portion 16 between the concave portions 14.
It is preferable to adopt a configuration in which the boundary line 18 is inclined to the same side as the boundary line 18 facing the folding ruled line forming direction Y at an acute angle and with the remaining portion 16 interposed therebetween. It has the advantages detailed in the form. In particular, if the boundary lines 18 are formed substantially parallel as in the above embodiment, there is an advantage that the formation of the folded ruled line 5 is easy.

When the folded ruled line 5 is composed of a large number of concave portions and a residual portion, the residual portion 16 can be composed of a shallow concave even if the thickness of the lid 4 is left as it is. is there.

Further, in the above embodiment, the folding ruled line 5
Although only one line is provided, as shown in FIG. 6, even a case where a plurality of parallel folding ruled lines 5 are formed is within the intended range of the present invention. By providing a plurality of folded ruled lines 5 in this manner, the force acting in the direction in which the opened lid returns to the closed position can be dispersed, and the broken ruled line 5 can be prevented from being damaged.

The folding ruled line 5 has a thickness of 5 to 50 μm.
It is preferred that In other words, if it is less than 5 μm, the lid 4 may be damaged or broken from the folded ruled line 5 during transportation or storage of the product. On the other hand, if it is thicker than 50 μm, there is a problem that it is difficult to bend along the folding ruled line 5.

Further, in the present invention, it is preferable to provide a tapered portion 6c which is inclined downward and outward from the bent portion 6b which is bent inward as the locking portion 6 in the present invention. When the lid 4 thus opened is closed, by pressing the peripheral edge of the lid 4, the tapered portion 6c first comes into contact with the upper edge 1a of the container main body 1, and the locking portion 6 is brought into contact with the container main body 1. To the locking part 6 by pressing the lid 4 further downward.
Is locked to the locked portion 3, so that the lid 4 can be easily and surely secured.
Can be closed.

The locked portion 3 is formed on the upper edge 1a of the container body 1.
It is also possible to configure the outer periphery of the container by bulging a part of the outer periphery or by forming a concave portion. If it occurs, locking may not be possible. Therefore, it is preferable to configure the flange 3 with the entire outer periphery bulged.

[0042]

According to the packaging container according to the present invention, the folding ruled line is formed on the lid made of a plastic film and the peripheral portion is sealed with the upper edge of the container body. By folding up the lid along the opening, a part of the opening of the container body can be opened and this opened state can be maintained, and operations such as pouring hot water into the container body are extremely simple. Moreover, unlike the conventional lid made of aluminum foil and paper, there is an effect that the lid does not rise up and the opening is carelessly opened when the lid is closed after the hot water is injected.

[Brief description of the drawings]

FIG. 1 is a perspective view of a packaging container according to an embodiment of the present invention.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a plan view of the embodiment.

FIG. 4 shows the packaging container of the embodiment, (A) is an enlarged plan view of a main part, (B) is a cross-sectional view taken along line AA of (A),
(C) is a cross-sectional view taken along line BB of (a), and (d) is (a).
2 shows a cross-sectional view taken along line CC of FIG.

5A and 5B are explanatory views showing a packaging method using the packaging container of the embodiment, wherein FIG. 5A is a plan view showing a container body and a lid before being sealed, and FIG. (C) is an enlarged side cross-sectional view of a main part in a state in which a locking portion is formed.

FIG. 6 shows a packaging container according to another embodiment, wherein (a) is a perspective view and (b) is a plan view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Container main body, 1a ... Upper edge, 2 ... Opening, 3 ... Flange part (locked part), 4 ... Lid, 4a ... Peripheral part, 5 ... Bending ruled line, 6 ... Locking part, 6a ... Hanging down Part, 6b: bent part, 6c: tapered part, 7: product, 8: bending jig, 14: concave part, 16: remaining part, 18: boundary line,
X: Bending direction, Y: Bending ruled line forming direction

Claims (2)

[Claims] 1. A container body (1) for accommodating a container (7) such as noodles and having an open top, and a lid (4) for closing an opening (2) of the container body (1). A packaging container, wherein the lid is
(4) is made of a plastic film, the periphery (4a) is sealed with the upper edge (1a) of the container body (1), and the lid (4) is formed with a folded ruled line (5). A packaging container characterized by being made. 2. A lid (4) is provided with a locking portion (6) projecting downward from a peripheral edge and being bent inward, and is formed on the lid body (1). 2. The packaging container according to claim 1, wherein a locked portion (3) capable of locking the locking portion (6) is formed on an outer peripheral surface of the edge (1a).