JPH08324607A - Lid member for easy opening hermetically closed container - Google Patents

Abstract

PURPOSE: To provide an easy opening hermetically closed container keeping the seal workability and sealability of a lid member to a container main body sufficient during a period housing an article and certainly keeping the shape of the lid member when a part of the lid member is peeled to form a drain port to easily perform drain work and capable of simply peeling the lid member. CONSTITUTION: The expanded engaging part 13 engaged with the expanded engaging part 22 on a container main body, the inclined surface 14 surrounding the expanded engaging part 13 to reach a lid main body 11 and the vertical walls formed to both side parts of the inclined surface 14 to be fitted in the upper end opening of the container body are formed to at least one corner part of a lid member 10. The knob tongue piece 18 protruding from a seal flange 12 almost horizontally is integrally formed to the corner part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid of a container for tightly packaging a drip or the like together with liquid juice, and in particular, an easy-open structure in which the lid which is heat-sealed to the container body is manually peeled off. The present invention relates to a lid of a closed container.

[0002]

2. Description of the Related Art An easy-open closed container constructed by heat-sealing a lid to a container body can seal a side dish such as dipping sauce together with liquid juice, and stores it without deteriorating the taste of the side dish. Since it can be used, it has been widely used in recent years. This kind of easy-open closed container is necessary to have sufficient sealing property with respect to the container body in order to prevent the juice from leaking out, as well as the accessories stored in it. On the contrary, when taking out the contents such as a dressing, the lid must be easily peeled from the container body.

Therefore, for example, Japanese Unexamined Patent Publication No. 4-367403
A "sealed container" disclosed in Japanese Patent Laid-Open Publication "is a sealed container obtained by heat-sealing a container body having an opening with a flange and a lid member on the flange, and a flange in a wide sealing condition range. For the purpose of "providing a hermetically sealed container that is securely hermetically sealed up to the end and does not have a bad influence of uneven sealing of the flange of the container main body or seal bar temperature variation and seal failure," In a closed container made of a lid material annularly heat-welded to a container body on a flange, the lid material extends at least on the outer surface located on the heat-welded portion in a substantially radial direction around the center portion of the lid material. One recess, at least one of which
One recess is formed by thermocompression at the time of heat welding the container body and the lid material. "

According to this conventional "sealed container", "the container main body and the lid member are not affected by the uneven thickness of the flange of the container main body and the variation of the seal bar temperature, and the end of the heat-welded portion is sealed under a wide sealing condition. It is possible to obtain a closed container that can be heat-sealed reliably to an excellent part and has an excellent tightness. Also, in an easily openable closed container that is opened by using delamination of the container body from the outer end of the container. Since the lid material and the surface layer of the container body are reliably heat-welded to the outer edge of the container under the concave part on the surface of the lid material, delamination can be started easily and easy opening due to poor sealing. Is not damaged.
Even when a plastic molding lid is used as the lid material, a closed container having sufficient sealing property without being affected by uneven thickness of the molding lid and foreign substances such as overflowed contents, and excellent opening property. Although it is possible to obtain an easily openable closed container having the above ", there are the following problems that still have to be solved.

Although a tab for peeling the lid material from the container body is provided, the lid material cannot be easily peeled off by the tab because the sealing property of the lid material to the container body is too good. In the case where the stored product is the one that is combined with the juice like a dip, as shown in Fig. 4, it is necessary to cut the juice and then remove the contents. It is difficult to form a cut because the sealing property is too good. Since the lid member covering the drainage port formed by labor returns due to its own flexibility, the drainage port is closed again, so that the drainage work cannot be easily performed. In this type of container, the container body and the lid material are piled up before storing the stored items, but it is difficult to take out one by one unless they are completely overlapped. Becomes In order to seal the lid material (lid body) on the container body that contains the stored items, the lid body must be completely fitted to the container body so that it does not float from now on. Will come out.

An adhesive is used to seal the lid to the container body, and heat or pressure is applied to the adhesive to soften it to enhance its adhesive effect. Therefore, the adhesive strength is susceptible to environmental conditions during hot-melting of the adhesive, sealing conditions such as pressure and time, adhesion of contents on the sealing surface, and the like, and variations easily occur. If this variation is biased toward the weaker sealing property, the problem of seal leakage increases. Therefore, in general bonding work, the sealing temperature and pressure are set higher to bias the sealing property toward the higher level. .

In this case, the lid is strongly adhered to the container body, sacrificing the openability, and the container does not become an easy open container.

Therefore, the inventors of the present invention have made extensive studies as to how to solve the above-mentioned problems (1) in this type of easy-open closed container, and as a result, completed the present invention. Of.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned actual situation in this type of easy-open closed container, and the problem to be solved is to store the stored items. It is intended to maintain sufficient airtightness (sealability) and to easily peel off the lid and maintain the shape of the water drainage opening.

That is, the object of the present invention is to
While the stored items are stored, the workability and the sealability of the lid body to the container body can be made sufficient, and the lid when a part of the lid body is peeled off to form the drainage port is formed. An object of the present invention is to provide an easy-open closed container capable of reliably maintaining the shape of the body and easily performing the draining work, and also capable of easily peeling off the lid.

[0011]

In order to solve the above-mentioned problems, the means adopted by the present invention will be described with reference to the reference numerals used in the embodiments. A lid body (10) that is sealed by a seal flange (12) on a flange upper surface (21) of a container body (20) that constitutes an open closed container (100) and has a lid body section (11) inside the seal flange (12) that is depressed into the container body (20), The bulging engagement portion 13 that engages with the inside of the bulging engagement portion 22 on the container body 20 side at at least one corner portion of the lid body 10.
An inclined surface 14 that surrounds the bulging engagement portion 13 and reaches the lid body portion 11, and vertical walls 15 that are located on both sides of the inclined surface 14 and that are fitted into the upper end opening of the container body 20. To form
Further, it is a lid body 10 "for the easy-open closed container 100 in which a knob tongue piece 18 that projects substantially horizontally from the seal flange 12 is integrally formed at the corner portion.

[0012]

The operation of the lid 10 according to the present invention constructed as described above will be described together with the mode of use thereof. First, the lid 10 has a lid main body 11 forming a flat surface. In contrast, the seal flange 12 and the tab tongue piece 18 are provided through the inclined surface 14, the vertical wall 15, and the auxiliary inclined surface 16.
Since it is integrally formed, it can be easily manufactured by using a synthetic resin sheet, and is sufficient to seal the inside of the container body 20 to which this is fitted and sealed. It has become.

Before the lid 10 is fitted to the container main body 20, a large number of the same ones are piled up and taken out one by one, and fitted to each container main body 20. However, when they are stacked, they do not strongly overlap each other (blocking). Because at least one corner portion of the lid body 10 is formed with a bulging engagement portion 13 which bulges outward slightly from the vertical wall 15, the bulging engagement portion 13 is formed. Since it comes into contact with the seal flange 12 or the inclined surface 14 of the other lid 10, the lids 10 do not overlap strongly. Therefore, it is possible to reliably take out the stacked lids 10 one by one.

When the lid body 10 is fitted to the container body 20 that stores a container such as a drip-containing soup, while the container body 20 is being conveyed toward the heat sealing machine, the juice inside the container body 20 is There is no spillage. This is because the lid body 10 is fitted with the lid body 11 of the lid body 10 depressed in the container body 20, and the vertical walls 15 are also fitted.
Comes into contact with the inner surface of the wall forming the upper end opening of the container body 20, and the bulging engagement portion 13 on the lid body 10 side is attached to the container body 2.
This is because the bulging engagement portion 22 on the 0 side is engaged. Therefore, the seal flange 12 of the lid body 10 is
Even if the lid 21 is not yet sealed to the 0-side flange 21, the lid 10 does not lift from the container body 20 and maintains a substantially completely sealed state.
The juice inside 0 never leaks out. Also,
Since the seal flange 12 of the lid 10 is in a state of substantially completely abutting on the flange 21 of the container body 20, it is possible to reliably load and seal the heat seal machine. is there.

In the embodiments described below, a seal layer having a thickness of about 1 to 8 μm is formed on the entire lower surface of the seal flange 12 of each lid 10, and the lid 10 side is formed by a heat sealing machine. By heating and crimping the seal flange 12 and the flange 21 on the container body 20 side,
Each lid 10 is heat-sealed to the container body 20 on the entire surface of the seal flange 12, and
The inside of 0 will be completely sealed.

In order to take out the contents stored in the easy-open closed container 100 as described above, first, as shown in FIG. 4, extra liquid soup must be discarded. For that purpose, the knob tongue piece 18 is used. Part of the lid body 10 must be peeled off from the container body 20 by pinching and pulling up. The work in this case can be easily performed by the presence of the knob tongue piece 18, and can also be easily performed by the following reasons. In other words, if the vertical wall 15 described above is present in the portion where the knob tongue piece 18 is present, the vertical wall 15 cannot be peeled off unless a force that breaks the shape of the vertical wall 15 is applied. Lid 1
In 0, an inclined surface 14 that surrounds the bulging engagement portion 13 described above is formed at the corner portion, and since the seal flange 12 and the lid main body portion 11 are smoothly continuous by the inclined surface 14, the vertical surface is vertical. This is because there is no need to break the wall 15.

The fact that the vertical wall 15 does not have to be broken means that the force required when the lid 10 is peeled off by the knob tongue piece 18 is small, but the sealing strength of the sealing layer is slightly increased. You can set it. That is, in the lid body 10 of the easy open container 100, the sealing strength with respect to the container body 20 can be set to be slightly higher, and the leakage of the liquid juice at the time of sealing can be surely prevented.

By the above, at one corner of the easy-open closed container 100,
The water drainage opening 19 as shown by the phantom line in FIG. 1 is formed, and the shape of this water drainage opening 19 is the knob tongue piece 1.
It is maintained even if you take your finger off 8. This is because the end of the inclined surface 14 described above is located on the side of the lid 10 that is located on both sides of the drainage port 19, and the end of the inclined surface 14 is the same as that of the lid main body 11 and the vertical wall 15. In succession,
When the knob tongue piece 18 is pulled up to form the water drainage opening 19 in the easy-open closed container 100, a slight irreversible deformation occurs on the inclined surface 14 and its end, and due to the deformed inclined surface 14 and the like. This is because the open state of the water drainage port 19 is maintained. That is, when the drainage port 19 is formed, the lid body 10 that covers this portion
A part of it or the knob tongue piece 18 integral therewith maintains the open state as shown in FIG.

As described above, the fact that the water drainage opening 19 is kept open is considerably important in the easy-open closed container 100 that also stores this kind of juice. . The reason for this is that when the knob tongue piece 18 is released, the water drainage opening 19 causes the lid 1 to
This is because if it is covered again with a part of 0, it becomes difficult to release only the juice. In addition, when the entire lid 10 is peeled off to take out the stored items, the peeling portion including the knob tongue piece 18 is used as a trigger, but the knob tongue piece 18 is relatively small. This is because, if it is difficult to find it, it becomes difficult to grasp the trigger. This is especially important for elderly people with poor vision.

Further, the water drainage opening 19 as described above is formed by peeling the lid body 10 by the gripping tongue piece 18, and it is difficult to decide how much force should be applied. In the lid body 10, the necessary water drainage port 19 can be formed without hesitation. The reason is that the portion of the lid body 10 on which the inclined surface 14 is formed is peeled off from the container body 20, and the peeling can be performed with a small force by the above-described action of the inclined surface 14, while the vertical wall When it is peeled off up to the point 15, a little strong force must be applied, so that the boundary becomes the boundary forming the drainage port 19,
This is because the operator can understand as a real feeling.

When the drainage of the container body 20 is completed as described above, there is no need to worry about the leakage of the juice, so that the lid 10 can be peeled off with a little force. is there. In this case, in the lid 10 of the present embodiment, the auxiliary inclined surface 16 having a smaller area than the above-described inclined surface 14 is formed at each side, and the auxiliary inclined surface 16 also causes the lid 10 to move. Easy to peel off.
That is, each auxiliary inclined surface 16 also performs substantially the same action as the inclined surface 14 when the lid 10 is peeled off.

In the following embodiments, the inclined surface 14 is formed only at one corner, but the inclined surface 14 may be formed at other corners. For example, since the above-mentioned action does not occur even at the corners, it goes without saying that draining and peeling of the lid 10 from the container body 20 can be performed more easily.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described based on the embodiments shown in the drawings. FIG. 1 is a plan view of a lid 10 according to the present invention. The lid body 10 is formed by, for example, pressure molding using a synthetic resin sheet as a material, and the lid body portion 11 is fitted into the upper opening portion of the container body 20 as shown in FIG. The entire seal flange 12 formed in the above can be placed on the flange 21 on the container body 20 side.

The easy-open closed container 10
It is needless to say that 0 is not limited to the case where the plane shape is a substantially square shape as shown in FIG. 1, and can be implemented not only as a rectangle but also as a triangle or another polygonal shape. . In addition, in this embodiment, each lid 1
A seal layer having a thickness of about 1 to 8 μm is formed on the entire lower surface of the seal flange 12 of No. 0. Due to the presence of this seal layer, the seal flange 12 on the lid 10 side and the flange 21 on the container body 20 side are formed. When and are heated and pressure-bonded by a heat sealing machine, each lid 10 is heat-sealed to the container body 20 on the entire surface of the seal flange 12, and the inside of the container body 20 is completely sealed.

A gravure coat printing method is used for forming the seal layer in this embodiment, whereby the thickness of the seal layer at the corner portion is made thinner than other portions, and the thickness of the portion is reduced. It is designed to be easily peeled off. The material forming the seal layer is a hot-melt type material, which is mainly composed of synthetic rubber such as styrene-butadiene rubber and chloroprene rubber.

In the lid 10 of the present embodiment, as shown by the dotted line in FIG. 1, each expansion formed on the side of the container body 20 slightly protruding outward from the vertical wall 15 described later. A bulging engaging portion 13 that engages with the inside of the protruding engaging portion 22 is formed. Around the bulging engagement portion 13 located in the lower left portion of FIG. 1, an inclined surface 14 is formed so that the upper edge is continuous with the seal flange 12 and the lower line is continuous with the lid body 11. is there. A connecting surface 14a is provided at both ends of the inclined surface 14.
Are continuously located, and both ends of the inclined surface 14 are connected to the vertical wall 15 by the connecting surface 14a.

In the lid 10 of the present embodiment, the auxiliary inclined surface 16 having an area smaller than that of the above-mentioned inclined surface 14 is formed at each side, and the auxiliary inclined surface 16 causes the lid 10 to move. It is designed to be easily peeled off.
That is, each auxiliary inclined surface 16 also performs substantially the same action as the inclined surface 14 when the lid 10 is peeled off, and the vertical wall 15 is provided between the auxiliary inclined surfaces 16 and the inclined surfaces 14. Has been formed.

Each vertical wall 15 is to be fitted into the upper opening portion of the container body 20, and its outer surface abuts the inner surface of the wall on the container body 20 side.
It is literally as a vertical surface. If the container body 20
It goes without saying that each vertical wall 15 also becomes a surface corresponding to the inclination when the upper opening on the side expands upward. In short, each vertical wall 15 is formed so as to be able to abut against the wall surface on the container body 20 side, so that the fitting property of the lid body 10 to the container body 20 is ensured and the inflow of juice is prevented. It is a thing.

At the portion of the lid 10 where the inclined surface 14 is formed, a knob tongue piece 18 is integrally formed as shown in FIG. 1, etc., and the knob tongue piece 18 is formed. Is, as shown in FIG.
It is formed as it protrudes in the lateral direction. Of course, if the inclined surface 14 is also formed in another corner portion, the knob tongue piece 18 is also formed in that portion.

In the lid 10 of the present embodiment, as shown in FIG. 1, the mounting portion that forms the same surface as the lid main body 11 at the other corners of the corner where the inclined surface 14 is formed. A step portion 17 is formed, and the mounting step portion 17 also prevents blocking when the easy-open closed containers 100 are stacked.

[0031]

As described above in detail, in the present invention,
As illustrated in the above-mentioned embodiment, “the seal flange 12 seals the upper surface 21 of the flange of the container body 20 that constitutes the substantially square-shaped easy-open closed container 100 that prevents liquid leakage. The lid body 11 is a lid body 10 that is recessed in the container body 20, and at least one corner of the lid body 10 is bulged to engage with the bulging engagement portion 22 on the container body 20 side. The engaging portion 13, the inclined surfaces 14 that surround the bulging engaging portion 13 and reach the lid main body 11, and are fitted to the upper end opening of the container body 20 located on both sides of the inclined surface 14. The vertical wall 15 is formed, and the knob tongue piece 18 that projects substantially horizontally from the seal flange 12 is integrally formed at the corner portion. " Lid while storing It is possible to make the sealing workability and the sealing performance of the container body of the container sufficient, and to ensure the shape maintenance of the lid body when a part of the lid body is peeled off to form the drainage port, facilitating the draining work. Can be done in
Moreover, it is possible to provide an easy-open closed container in which the lid can be easily peeled off.

That is, according to the lid 10 of the present invention, the following effects can be exhibited. Since the swelling engaging portion 13 and the inclined surface 14 reaching the lid main body 11 are formed in at least one corner portion, the lid 10 can be easily peeled off by the knob tongue piece 18. You can The formation of the water drainage port 19 for discharging the juice can be easily performed by the above effect. Since the lid body 10 covering the drainage port 19 does not return due to its own flexibility, the drainage work can be easily performed. Since the lid body 10 has the bulging engagement portions 13 that engage with the bulging engagement portions 22 on the container body 20 side at at least one corner portion thereof, they are completely overlapped with each other. The lids 10 can be omitted so that the lids 10 can be easily taken out one by one. When the lid body 10 is sealed to the container body 20 containing the stored items, the lid body 10 is formed with the vertical wall 15 fitted into the upper end opening of the container body 20.
Thus, the lid 10 can be completely fitted into the container body 20 so as not to float, and the juice does not leak during transportation. Further, since the lid body 10 of the present invention facilitates the peeling from the container body 20 by the inclined surface 14, it is possible to make the sealing strength relative to the container body 20 relatively sufficient. Thus, the leakage of the juice stored in the container body 20 can be completely prevented.

[Brief description of drawings]

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

FIG. 2 is a partial perspective view of the same.

FIG. 3 is a partial front view showing a state before the lid according to the present invention is fitted into the container body.

FIG. 4 is a partial perspective view showing a state in which a part of the lid body of the present invention is peeled off by a knob tongue to form a water drainage opening, and the water drainage opening is used to drain water.

[Explanation of symbols]

 100 Easy Open Airtight Container 10 Lid Body 11 Lid Main Body 12 Seal Flange 13 Swelling Engagement Part 14 Inclined Surface 14a Connection Surface 15 Vertical Wall 16 Auxiliary Inclined Surface 17 Placement Step 18 Knob Tongue Piece 19 Drain Port 20 Container Body 21 Flange 22 Bulging engagement part

Claims (1)

[Claims] 1. A lid main body which is sealed by a seal flange on the upper surface of a flange of a container main body that constitutes a substantially square-shaped easy-open closed container that prevents liquid leakage, and which is inside the seal flange is inside the container main body. A lid body which is depressed, wherein at least one corner portion of the lid body is provided with a bulging engagement portion that engages with the bulging engagement member on the container body side, and surrounds the bulging engagement portion. An inclined surface reaching the lid main body and vertical walls located on both sides of the inclined surface and fitted in the upper end opening of the container main body are formed, and the corners are substantially horizontal from the seal flange. A lid for an easy-open closed container integrally formed with a protruding tab tongue.