JP2003252359A - Lid body for sealed container for packaging - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid body in which a half-opened condition can be surely kept and sealing can be completely performed again by a simple constitution. <P>SOLUTION: The lid body 10 has a flange part 13 sealed on a flange part 21 formed on a peripheral edge of an opening of a container main body 20 and constitutes a sealed container for packaging with the container main body 20. The first hooking part 11 and the second hooking part 12 facing to each other and hooking in each other when the lid body 10 is folded are formed at positions being inside of the flange part 13 of this lid body 10 and opposite sides each other. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for a sealed container for packaging comprising a container body and a lid, and more particularly, a flange portion to be fitted, adhered or heat-welded to a flange portion of the container body. The present invention relates to a lid having the same.

[0002]

2. Description of the Related Art Various sealed containers for packaging foods and the like have been proposed which consist of a container body and a lid fitted to the container body. As for the above, various devices have been devised according to the application. For example, in Japanese Patent Laid-Open No. 2001-097436, water vapor generated in a container when heated in a microwave oven can be favorably released to the outside of the container, and when decompression occurs in the container after heating is finished, outside air is discharged into the container. A "packing container" has been proposed for the purpose of enabling good introduction into the market.

[0003] If such a packaging container is intended for containers such as vegetables and fruits that have no juice even if there is water vapor, the water vapor is discharged to the outside of the container or the outside air is introduced into the container. However, in a container that stores a lot of water or juice, such as tofu or pickles soaked in water, outside air and water vapor can go in and out. Doing so means that these also easily leak outside, which is rather inconvenient. As a matter of course, the packaging container for pickles and tofu must be completely sealed before opening to prevent "liquid leakage". Conversely, after opening, draining and removing a part of it. In order to perform the above, it is necessary to open the lid halfway.

By the way, in recent years, life is diversifying, the number of people living alone is increasing, and various foods are arranged on the dining table even if the family has a meal together.
Tofu and pickles containing a large amount of juice stored in a closed container for packaging of this kind are rather rarely completely consumed after opening, and are put on the next table again. In such a case, it is necessary to open the lid halfway when opening the container for the first time, remove the contents, and then close the lid again.

In a conventional lid for a closed container for packaging,
Since it is completely sealed to the container body by means such as adhesion without considering the half-opened state at all, if you try to take out the contents with the opened lid in the half-opened state, the opened lid will The body came back and closed the opening, and conversely, when trying to reseal, it rolled up and became very unwieldy.

[0006] Therefore, the inventors of the present invention, what should be done to make it possible to easily maintain the half-opened state of the lid of the sealed container for packaging as described above and easily reseal it? As a result of various studies on the above, the present invention has been completed.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned actual situation in this type of sealed container for packaging, and the problem to be solved is to reliably maintain a half-opened state. The object is to provide a lid body that can be completely sealed and can be resealed with a simple structure.

[0008]

In order to solve the above-mentioned problems, first, the means adopted by the invention according to claim 1 will be described with the reference numerals used in the description of the later-described embodiments. Then, “the lid 10 that has the flange portion 13 that is hermetically sealed by the flange portion 21 formed at the opening peripheral edge of the container body 20 and constitutes the sealed container for packaging together with the container body 20
At the positions inside the flange portion 13 of the lid body 10 opposite to each other, when the lid body 10 is bent, the first engaging portions 11 that face each other and engage with each other, and The lid 10 ″ is characterized in that the second engaging portion 12 is formed.

That is, the lid 10 according to claim 1
As shown in FIG. 1 and FIG. 5, when the lid 10 is bent, the first engaging portion 11 and the second engaging portion 12 that face each other and engage with each other are attached to the lid. It is formed on the opposite sides of the body 10. Also, this lid 1
0 and the container body 20 to which this is fitted are formed by vacuum or pressure molding a synthetic resin sheet, and the first engaging portion 11 and the second engaging portion 12 are the same as those described above of the lid 10. It is molded at the same time as molding.

These first engaging portion 11 and second engaging portion 1
In order to make the two engage with each other, various modes such as a key-like engagement with different engagements are conceivable. However, in the embodiments described below, FIGS. As shown, one is a projection and the other is a recess into which it can be fitted.

Specifically, first, as shown in FIGS. 2 and 3, the first engaging portion 11 is formed as a recess having a narrow entrance and a large depth, and the second engaging portion 12 is shown in FIG. As shown in FIG. 4 and FIG. 4, the head is a large protrusion having a large waist. In the second engaging portion 12 of the present embodiment, a plurality of small bulging portions that protrude outward are formed around the second engaging portion 12, and the bulging portions allow engagement within the first engaging portion 11. I try to make sure.

If the first engaging portion 11 and the second engaging portion 12 as described above are formed on the lid 10 side, for example, as shown in FIG. 5, the second engaging portion 12 of the lid 10 is formed. When the side on which is formed is opened and bent to the opposite side, the second engaging portion 12 faces the first engaging portion 11, and as shown by the arrow in FIG. Then, if the second engaging portion 12 is pressed as it is, it is engaged with the first engaging portion 11. As a result, the half-opened portion of the lid body 10 is held on the remaining portion, and the half-opened portion does not close the opening when, for example, draining or partially removing the contents, The operation is easy. In the above example, the case where the second engagement portion 12 side is opened is shown. However, conversely, the same applies when the first engagement portion 11 side is opened.

Further, the first engaging portion 11 and the second engaging portion 12
In the case of this embodiment, the two are engaged with each other, so that the engagement can be easily released by peeling off the upper part of the lid 10. The released portion returns to its original position due to the flexibility of the synthetic resin sheet forming the lid 10, so that the resealing can be easily performed.

Therefore, the lid 10 according to the first aspect of the present invention is reliably maintained in the half-opened state and can be completely resealed.

In order to solve the above-mentioned problems, the means adopted by the invention according to claim 2 is the same as that of claim 1 in that "a bending ridge 1 for assisting the bending of the lid 10 is provided.
4 was formed. "

That is, according to the lid 10 of the second aspect,
As shown in FIG. 1, for example, a bending protrusion 14 for assisting bending of the flat surface portion of the lid body 10 is formed at a substantially intermediate position between the first engaging portion 11 and the second engaging portion 12. The bent ridge 14 facilitates half-open bending as shown in FIG. This bent ridge 14 also has a lid 1
When molding 0, it is molded at the same time as the first engaging portion 11 and the like.

In the case of the embodiment described below, the bent ridge 14 is positioned substantially along the diagonal line when the flat portion of the lid 10 is substantially quadrangular as shown in FIG. As shown in FIG. 7, the cross-sectional shape thereof is a substantially arcuate shape that bulges downward (inside the container body 20), and the small protrusion 14a that protrudes upward into the inside thereof is formed. Is formed. The position where the bent protrusion 14 is formed is
Diagonal line as described above (corresponding to a string in a round container)
5, it is advantageous that the open portion of the lid body 10 can be approximately half of the whole, as shown in FIG. 5, but it is not limited to this.

The sectional shape of the bent ridge 14 is not limited to that shown in FIG. 7, and various shapes as shown in FIG. 8 can be considered. The bent protrusion 14 shown in FIG.
It has a substantially perfect arcuate shape that bulges downward, and the bent protrusion 14 shown in FIG. 8B is a triangular shape that bulges downward. The bent protrusion 14 shown in FIG. 8C has a substantially arcuate shape that bulges downward, and a small protrusion 14a that protrudes further downward is formed therein. The bent ridge 14 shown in FIG. 8D has a substantially arcuate shape that bulges upward.

Since the bent ridges 14 are as described above, it is only clear at a glance where to partially open the lid 10 as shown in FIG. 1 or 9, for example. Instead, the bending itself of the lid 10 along the bending ridge 14 can be surely and easily performed. That is, since the cross section of the bent ridge 14 is as shown in FIG. 7 etc., the bending of the lid body 10 is naturally performed by using the bent ridge 14 as a guide portion.

Therefore, the lid 10 according to the second aspect of the present invention not only exhibits the same function as that of the first aspect, but also allows the lid 10 to be easily bent.

In order to solve the above-mentioned problems, the means adopted by the invention according to claim 3 is a lid 10 according to claim 1.
Regarding, “A locking protrusion 16 is formed in the vicinity of the first engaging portion 14 or the second engaging portion 12, and a locking protrusion 22 facing the locking protrusion 16 is formed on the container body 20 side. And when closing the opened lid 10 again,
The locking projections 16 and 22 are locked to each other. "

That is, the lid 10 according to the third aspect of the present invention is such that, when the half-opened portion is resealed as shown in FIG. 5, it can be securely locked to the container body 20 side. Therefore, the locking protrusion 16 is provided near the first engaging portion 14 or the second engaging portion 12 formed on the lid body 10.
The locking projection 2 that faces the locking projection 16.
2 is formed on the container body 20 side.

The locking projection 16 is formed on the lid 10 when the first engaging portion 11 and the second engaging portion 12 are molded. The locking projection 22 on the side of the container body 20 can be easily formed by molding simultaneously on the flat surface portion of the lid body 10 in the vicinity thereof. It may be formed as. Since the locking projection 16 and the locking projection 22 are engaged with each other, they are formed in a shape such that one of them is convex and the other is concave, for example.

Therefore, the lid body 10 according to the third aspect of the present invention has the same function as that of the first aspect of the present invention and can surely be resealed.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a description will be given of each of the inventions configured as described above with respect to a lid body 10 which is an embodiment shown in the drawings. It includes all the inventions pertaining to.

FIG. 1 shows a plan view of a packaging container which employs a lid 10 according to the present invention. This packaging container is a container body 20 schematically shown in FIG. The lid body 10 is hermetically sealed by using both flange portions 13 and 21 thereof. This sealing is performed by fitting the flanges 13 and 21 together, adhering using an adhesive or the like, or by heat welding when both materials are of the same kind, and the adhesive strength is such that it can be opened by hand. It is as In addition, the lid 10 and the container body 20 of the present embodiment.
Is obtained by vacuum or pressure molding using a synthetic resin sheet made of polyethylene terephthalate as a material.

As shown in FIG. 1, the lid body 10 has a substantially rectangular shape that fits the shape of the container body 20.
A flange portion 13 to be sealed by the flange portion 21 on the container body 20 side is formed on the outer periphery thereof. A flat surface portion is formed on the inner side of the flange portion 13, and one diagonal line of the flat surface portion is defined as a symmetry line.
The 1st engaging part 11 and the 2nd engaging part 12 which will be fitted mutually are formed, respectively.

As shown in FIGS. 2 and 3, the first engaging portion 11 is a recess having a narrow entrance and a wide interior.
The second engaging portion 12 coming from above can be fitted inside. On the other hand, regarding the second engagement portion 12, FIG.
As shown in, the head is a large projection with a large neck down. In addition, in the 2nd engaging part 12 of this embodiment, as shown to (a) of FIG. 4, the some small bulging part which protrudes outward is formed in the circumference | surroundings, and these bulging parts are formed. The portion ensures engagement in the first engaging portion 11.

Further, as shown in FIG. 1, a bent protrusion 14 is formed on the flat portion of the lid 10 at a position substantially along the diagonal line. Bending ridge 14 of this embodiment
Forms a place where the lid 10 is bent in half and serves as a guide in that case, and its cross section is as shown in FIG. That is, the bent protrusion 14 of the embodiment
Is an arcuate shape that bulges from the flat surface portion of the lid body 10 toward the inside of the container main body 20, and at the bottom thereof, a small protrusion 14a that protrudes outward of the container main body 20 this time is formed. Is.

The bent ridges 14 are not limited to those shown in FIG. 7, but can be adopted in various forms as shown in FIG. The bent ridge 14 shown in (a) of FIG. 8 has a substantially complete arc shape that bulges downward, and the bent ridge 14 shown in (b) of FIG. 8 bulges downward. It is a triangular shape that sticks out, and any of them can simplify the molding die. In addition, the bent protrusion 14 shown in FIG.
It has a substantially arcuate shape that bulges downward, and a small protrusion 14a that protrudes further downward is formed inside thereof.
Similar to the bent ridges 14 shown in (a) and (b) of FIG. 8 above, in the container body 20 sealed by the lid body 10, an air pool that may contain germs is formed. There is no such thing. Of course, as shown in FIG. 8D, the bent protrusion 14 may be implemented as a substantially arcuate shape that bulges upward.

As shown in FIGS. 1 and 6, inclined projections 15 are formed on both ends of the above-mentioned bent ridges 14. Each of the inclined projections 15 guides the bending by itself, but by forming the inclined projections 15 at both ends of the bending projection 14 as in this embodiment, the bending projection 14 receives. The stress can be eliminated by each inclined projection 15.

Further, this inclined projection 15 is formed by
As shown in FIG.
When this is performed, the auxiliary inclined projection 15a exerts the same function as the small projection 14a on the open side, and the lid 1
It is possible to make the folding of 0 easier.
Further, as shown in FIG. 6 and FIG. 9, if the apex of the inclined projection 15 is formed near the inner side of the flange portion 13, the stress received by the bent protrusion 14 can be more effectively eliminated. You can

A locking projection 16 is provided on the lid 10 near the first engaging portion 14 or the second engaging portion 12 described above.
However, a locking projection 22 that faces the locking projection 16 is formed on the container body 20 side, and the locking projection 16 and the locking projection 22 are the opened lid body 10.
When they are closed again, they are locked together.
When the locking projection 16 is formed on the lid body 10 to form the first engaging portion 11 and the second engaging portion 12, the lid becomes a vicinity of the first engaging portion 11 or the second engaging portion 12. The locking projection 22 on the container body 20 side can be easily formed by molding simultaneously on the flat surface of the body 10. For example, when the container body 20 is formed, it may be formed as an “undercut portion”. Good. Since the locking projection 16 and the locking projection 22 are engaged with each other, they are formed in a shape such that one of them is convex and the other is concave, for example.

Of course, as shown in FIGS. 1 and 2, the lid body 10 and the container body 20 of this packaging container are formed with the gripping portions 17 and 23 used for peeling off the open portion, respectively. I am doing it.

9 and 10 show a lid 1 according to the present invention.
Another embodiment of the container body 20 that is closed by 0 is shown.
A recess 24 is formed in the side portion, and this recess 24
Due to the existence of, the grip portion 25 is formed on the side of the grip portion 23. As shown clearly in FIG. 10, this gripping portion 25 is configured such that it and the lid 10 side portion thereabove can be gripped by a finger, and the operation of forming the half-opened portion can be facilitated. .

Not only that, the presence of the grip 25 and the recess 24 allows the storage portion for food or the like to extend to the inner part thereof, so that no water or liquid will come onto the grip 25. Therefore, even if the second engaging portion 12 that is the above-mentioned protrusion is formed on the lid body 10 that is above the grip portion 25, the second engaging portion 12 will not be formed.
This prevents the formation of air pockets mixed with various bacteria that adversely affect the food inside.

Of course, the first engaging portion 11 on the side opposite to the second engaging portion 12 is formed as a downward projection to be immersed in water or liquid in the container body 20. As a result, it is possible to give a great meaning to forming the first engaging portion 11 as a recess that enters into the container body 20.

[0038]

As described above in detail, in the invention of claim 1, first, as exemplified in the above embodiment, "a flange portion 21 formed in the opening peripheral edge of the container body 20 is hermetically sealed. A lid body 10 having a container body 20 and a packaging closed container together with the container body 20. The lid body 10 is folded inside the flange portion 13 of the lid body 10 at positions opposite to each other. It is characterized in that the first engaging portion 11 and the second engaging portion 12 that face each other when bent and engage with each other are formed. " A lid 10 that can be reliably maintained and that can be completely resealed,
It can be provided with a simple configuration.

Further, by forming the bending protrusion 14 for assisting the bending of the lid body 10, the same effect as that of the invention according to claim 1 can be exerted, and the lid body 10 can be provided. It is possible to provide the lid body 10 that can be easily bent.

Further, a locking projection 16 is formed near the first engaging portion 11 or the second engaging portion 12, and a locking projection 22 facing the locking projection 16 is formed on the container body 20 side. For example, in addition to the same effects as the invention according to claim 1, the lid 10 that can surely perform the re-sealing can be provided.

[Brief description of drawings]

FIG. 1 is a plan view of a sealed container for packaging that uses a lid according to the present invention.

FIG. 2 is a cross-sectional view of the lid body taken along line 1-1 in FIG.

FIG. 3 is a view showing a first engagement portion adopted in the lid body, (a) is an enlarged plan view thereof, and (b) is a longitudinal sectional view thereof.

FIG. 4 is a view showing a second engaging portion adopted in the lid body, (a) is an enlarged plan view thereof, and (b) is a longitudinal sectional view thereof.

FIG. 5 is a schematic perspective view showing a state in which a part of the lid is peeled off from the sealed container for packaging.

FIG. 6 is a partially enlarged plan view showing a bent ridge of the lid and an inclined protrusion at an end thereof.

FIG. 7 is a cross-sectional view of the bent ridge seen along line 2-2 in FIG.

FIG. 8 is another embodiment of the bent ridges, which is 4 of (a) to (d).
It is the partial expanded sectional view which illustrated the kind.

FIG. 9 is a plan view showing another embodiment of the packaging closed container.

10 is a vertical cross-sectional side view of the packaging closed container of FIG. 9. FIG.

[Explanation of symbols]

10 Lid 11 First engaging portion 12 Second engaging part 13 Flange 14 bent ridges 14a Small ridge 15 Inclined protrusion 16 Locking protrusion 17 Picking part 20 container body 21 Flange 22 Locking protrusion 23 Picking part 24 recess 25 grip

Claims (3)

[Claims] 1. A lid for forming a hermetically sealed container for packaging together with the container body, the lid having a flange portion formed at a peripheral edge of an opening of the container body, the flange portion of the lid body. A lid having a first engaging portion and a second engaging portion that face each other and engage with each other when the lid body is bent, at positions opposite to each other inside the lid. body. 2. The lid body according to claim 1, wherein the lid body is formed with a bending ridge for assisting the bending of the lid body. 3. A locking projection is formed in the vicinity of the first engaging portion or the second engaging portion, and a locking projection facing the locking projection is formed on the container body side, The lid according to claim 1, wherein when the opened lid is closed again, the locking projections and the locking projections are locked to each other.