JPH08207951A - Lid body for container can with openable mouth - Google Patents

Abstract

PURPOSE: To provide a lid body wherein a pull tab is not removed from a can, and in addition, an openable lid does not enter the inside of a lid at all when the openable lid is opened to be hygienic, regarding a lid body for a container can with an openable mouth, so called a pull tab opening type can, which is used for beverage cans. CONSTITUTION: For a lid body of a container can with an openable mouth, an openable lid 3 and pull tab 2 are put together and mounted on the lid body 1, when a beverage is drunk. For such a lid body, a weakened part or auxiliary score lines 12, 20 are provided at an area where the openable lid 3 is folded into a plurality of sections. At the same time, the put together openable lid and pull tab are connected and fitted to each other by fitting protuberances 14, 15, 16 which are provided on the lid body.

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 so-called pull tab open type open container can used for a beverage can. More specifically, the present invention relates to a lid body of an open container can, which is also called a pull can that pulls a handle called a tab provided in advance on the lid of the can to form an opening of a drinking mouth in a part of the lid.

[0002]

2. Description of the Related Art Conventionally, an opening forming means called a pull tab has been known for the purpose of forming an opening in a beverage can lid. These beverage cans are generally made of extremely thin plates such as aluminum and steel plates.

An example of this is a plan view of the main part of the lid of the open container can showing the main part of the pull tab shown in FIG. The lid 1 is a portion of a lid of a can containing a drink such as juice, cola, or beer. This is a form in which a finger is put in the inner edge 5 of the pull tab 2 of the pull tab 2 and pulled to the right front side, and the opening lid 3 is removed together with the pull tab 2. The opening has a size limited by the so-called score line 8. The opening lid 3 and the pull tab 2 are connected by a connecting portion 4. The inner edge 5 of the pull tab is formed by bending a thin plate inward at the peripheral edge thereof, and thus prevents finger injuries during operation. The reinforcing projections 6 are used to reinforce the lid plate panel and prevent distortion, and facilitate opening operation. Similarly, reinforcing protrusions 7 are also provided around the connecting portion 4 to reinforce the pull tab 2.

FIG. 8 is a sectional view of the main part of the lid of the open container can of FIG. The pull tabs 2 are connected to each other by a connecting portion 4 which is a so-called overhanging portion in the lid body by utilizing a part of the lid body, and the pull tab 2 does not come off from the lid body 1 during operation.
9 is a plan view of a main part of a lid of an open container can showing a main part of a pull tab in another conventional example, and FIG. 10 is a sectional view of a main part of the cover of the open container can of FIG. This is one in which a finger is put in the inner edge 5 of the pull tab and pulled to the left front side to open. At this time, the opening lid 3
Is pressed at the tab tip portion 10 of the pull tab 2 and pushed into the can to open. The opening portion has a size limited by the score line 8. The score line 8 is provided with a cut groove to facilitate opening. Further, the opening lid 3 is opened without being removed from the lid body 1 by interrupting the cut groove of the score line 8 at a part thereof, for example, near the connecting portion 4.

The half-moon notch 11 also increases the degree of freedom of the pull tab tip 10. As a result, the influence of the connecting portion 4 fixed to the lid body when pulling the pull tab 2 toward the front is reduced, and the opening lid 3 can be strongly pushed in, which facilitates the opening operation. FIG. 8 is a cross-sectional view of the main parts of FIG. Reinforcing protrusions 17 are also provided around the connecting portion 4 to reinforce the strength of the lid panel and reduce plate strain. Similarly, the opening lid 3 is also provided with a reinforcing protrusion 18 to enhance the strength of the opening lid and facilitate the opening operation.

However, in the example of FIG. 7, the opening lid 3 after opening is removed from the lid 1. In such a case, the pull tab 2 and the opening lid 3 are often discarded separately from the lid body.
Not only is it dangerous to get into the mouth of other small animals,
The fact is that only pull tabs are scattered in places other than the designated dumps, which is a cause of environmental damage. Therefore, FIG.
A type in which a pull tab such as that which does not come off from the can was devised. However, in the form of FIG. 9, when the pull tab 2 is operated, the opening lid 3 always sneaks into the inside of the lid body and comes into contact with the beverage such as juice or beer of the contents. As a result, there was a problem in terms of safety and health, and it did not make sense of the image of the original sterilization preservation of canned foods and provision of canned products that can be relieved.

[0007]

DISCLOSURE OF THE INVENTION The present invention has solved the above-mentioned drawbacks, and the pull tab does not come off from the can, and the opening lid 3 does not enter the inside of the lid at the time of opening. A can lid can be provided. In addition, it matches the image of being simple and easy to use, the original safety of canned foods such as no contamination caused by operation, the purpose of long-term storage, and the provision of canned products that can be relieved without losing effects.

[0008]

DISCLOSURE OF THE INVENTION The present invention is a lid for a container can which is opened by a pull tab, and comprises an opening lid and a pull tab which are placed on the lid so that the lid and the pull tab are superposed so as to be folded at the time of opening. After the opening, the opening lid and the lid body are connected by a connecting protrusion provided on the lid body. Furthermore, when a fragile portion or auxiliary score line is provided at a position where the opening lid is folded into a plurality, when the opening lid has an elliptical shape or in an 8-shape, when the fragile portion or auxiliary score line is provided on the inside and outside of the lid, and It is effectively provided when the opening lid is in the shape of a figure 8 and at least a part of the neck portion is notched.

[0009]

The lid of the open container can basically lifts the pull tab 2 to open the open lid 3 along the score line 8. As the opening lid 3 is opened, the pull tab and the opening lid are overlapped by the weakened portion formed on the upper surface side of the lid and the auxiliary score line 12, and when viewed from the side, the shape is like a "Z" shape. After completely opening, the pull tab and the opening lid are overlapped, and the lid lid of the opening container can is pushed from above to fit the opening lid into the lid. Due to the snap effect, the pull tab and the opening lid are brought into close contact with the lid of the container can, and the internal solution such as drinking water can be completely consumed. Even when only the opening lid is fitted to the lid body, the pull tab and the opening lid are substantially overlapped by the connection of the connecting portion 4.

[0010]

EXAMPLES Examples will be described with reference to the drawings.
FIG. 1 is a plan view of an essential part of a lid of an open container can according to the present invention.
For the lid of the container and the open container can, generally, 0.28 mm-thick rust-resistant high-strength aluminum or thin steel plate is used. weight,
It is desirable to use a thin material from the viewpoint of cost, and this can be achieved by increasing the strength. The container itself is formed by a cylindrical squeeze. These are prepared by a commonly used method, and are subjected to ironing in order to improve dimensional accuracy. In addition, the diameter near the bottom of the cylinder tends to increase, and these are taken into consideration when forming. These should be taken into consideration during processing as a measure for improving the dimensional accuracy of the fitting protrusions 14, 15 and 16 described later.

The lid of the open container can has a circular shape as a whole, and a lid panel having a shape corresponding to the circular shape is formed depending on the shape of the container. Specifically, as shown in the sectional view of the main part of the lid of the open container can in FIG. 4, the outer peripheral surface is high and the flat panel portion is low. The reason is that in consideration of the internal liquid and gas pressure, a recess is formed lower than the flat panel along the outer periphery, for example, around the high-altitude panel 19. Further, the lowland panel 9 formed slightly lower than the highland panel 19 is provided. Reinforcing protrusions 6 and 13 are provided on the low-lying panel 9.
Is formed at least near the opening lid 3. This is for the purpose of strengthening the strength at the time of opening, but at the same time, plate precision should be considered in order to avoid plate strain due to so-called bead processing. Therefore, from these points, the shapes and positions of the reinforcing projections 6 and 13 should be selected according to the shape, position, size, etc. of the lowland panel 9.

Explaining the production of the opening lid, the opening lid 3 is formed in a figure 8 shape from substantially the center of the lid panel of the opening container can. Around the opening lid 3, a score line 8 for cutting called a score line is formed, but the auxiliary score lines 12 and 2 are partially formed.
It is also necessary to set 0 to facilitate only bending. The opening lid 3 is cut off from the lowland panel 9 to the auxiliary score line 20 by the operation of the pull tab, and then separated. In addition to this, the opening lid 3 may be oval or the like.

FIG. 2 is an enlarged cross-sectional view of an essential part of a state in which the pull tab of the lid of the open container can of the present invention is connected to the open lid before opening. Around the middle of the opening lid 3, an auxiliary score line 12 is formed as a fragile portion 12 or a folding score line in which a cutting portion is likely to occur during bending. Unlike the score line, the auxiliary score line is used exclusively to facilitate bending. The auxiliary score line 20 is also formed as a score line for bending at the end of the opening lid 3. In addition, it is possible to appropriately provide a cut as the fragile portion.

In the example shown in FIG. 1, the fragile portion 12 is formed in a part of the opening lid 3, and the fragile portion is partially formed from both sides of the neck portion which is just formed in an 8-shape. Further, it is preferable that auxiliary bending score lines for bending be formed continuously between the fragile portions 12 from both sides. Similarly, the auxiliary score line for bending may be provided without providing the fragile portion, and it can be achieved by appropriately selecting a material that can be easily bent, the shape of the opening lid, and the score line.

The pull tab 2 is connected to the opening lid 3 by a connecting portion 4. A trapezoidal protrusion formed in the cross section of the opening lid 3 is inserted into the opening of the pull tab 2 in advance and connected by a press. Further, two protrusions 14 and 15 as fitting protrusions are provided on the opening lid 3 and one place on the lowland panel 9, respectively.
16 is formed. The fitting protrusion 15 is put on the fitting protrusion 14, and the fitting protrusion 16 is put on the fitting protrusion 15 so that the fitting protrusion 15 can be fitted. In addition, there should be no disengagement when the beverage is discharged after mating. These overhangs require dimensional accuracy.

As in the above, the trapezoidal protrusion is seen from the cross section, but the following method is suitable for the protrusion processing. High-strength aluminum was used as the material. First, the first molding is first pressed in the opposite direction from the overhanging direction, then inverted to the overhanging side, and then a predetermined trapezoidal overhanging is finished. Further, it is possible to use a head having a round head and a narrow neck portion, or a material having a satin surface so that it is difficult to pull out at the time of fitting. It is also suitable to have a function similar to a so-called snap or hook. Good results were confirmed without significant thinning or excess thickness.

FIG. 3 is a plan view of an essential part showing a state where the lid of the open container can of the present invention is in the middle of opening. The pull tab 2 is substantially vertical, and the opening lid 3 is vertically bent in the middle thereof. Even in this state, the lowland panel 9
Also, the high-altitude panel 19 has little planar deformation. As shown in FIG. 1, the bent portion of the opening lid 3 includes a weakened portion or an auxiliary score line 12 and an auxiliary score line 20 provided at an end portion of the opening lid 3 to facilitate bending.

Similarly, FIG. 4 is a cross-sectional view of an essential part showing a state in which bending is slightly advanced from FIG. 3 in the middle of opening the lid of the open container can. Here, the pull tab 2 and the opening lid 3 are connected by the connecting portion 4.
Is connected, and one side is slightly warped from the bent portion of the opening lid 3. The fragile portion or auxiliary score line 12 on the opening lid 3 and the auxiliary score line 20 provided at the end of the opening lid 3 increase the folding effect.

FIG. 5 is a plan view of essential parts showing the state of the open container can of the present invention after opening. Similarly, FIG. 6 is an enlarged cross-sectional view of an essential part showing a state in which the pull tab after opening of the lid of the open container can and the opening lid are overlapped with each other. Both of these are pull tabs 2
The opening lid 3 is reliably set on the left side of the lowland panel 9. This makes it very easy to discharge the contents and does not touch the nose or eyes.

As shown in FIG. 6, the opening lid 3 is folded in two, and the pull tab 2 is superposed thereon. The mating protrusions 14 and 15 and the mating protrusions 15 and 16 are shown as being fitted together and substantially parallel to the lowland panel 9. This is a schematic representation. It should be noted that the pull tab 2 does not necessarily have to be superposed on the opening lid 3 by the fitting protrusion as described above. The reason for this is that the connecting portion 4 sets the opening lid 3 in a state in which it is close to the opening lid 3 in advance. In order to make it more complete, for example, it is not prohibited to take the same fitting method as the fitting projection 14 or the like on the reinforcing projection 13 so as to be fitted to the pull tab 2 separately. In that case, it is effective to use the fitting projections 14 to 16 together with the fitting means. If the omitted method is adopted, a fitting means corresponding to the distance from the lowland panel 9 to the opening lid 3 should be adopted.

[0021]

As described above, according to the present invention, it is easy to open the lid of the open container can. Further, since the pull tab and the opening lid are securely fitted to the can lid even after drinking, there is no risk of the pull tab entering the mouth of birds and animals. Further, since only the pull tab is disposed of at a place other than the predetermined dump site and is not scattered, there is no fear of environmental damage.
Further, it was confirmed that the opening lid did not enter the container at all when the pull tab was operated at the time of opening, and a remarkable effect on safety and hygiene. Furthermore, the configuration and operation are simple and easy, so low cost,
The effect that is excellent in mass productivity and storability is exhibited.

[0022]

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a lid of an open container can according to the present invention.

FIG. 2 is a sectional view of an essential part of a pull tab and an opening lid portion of a lid body of an opening container can of the present invention. FIG. 3 is a plan view of essential parts showing a state in which the lid of the open container can of the present invention is in the middle of opening.

FIG. 4 is a cross-sectional view of essential parts showing a state partway through the opening of the lid of the open container can.

FIG. 5 is a plan view of essential parts showing a state after opening of the open container can of the present invention.

FIG. 6 is an enlarged cross-sectional view of essential parts showing a state in which the pull tab after opening of the lid of the open container can and the opening lid are overlapped with each other.

FIG. 7 is a plan view of a main part of a lid of a conventional open container can.

8 is a sectional view of a main part of a lid of the open container can of FIG. 7.

FIG. 9 is a plan view of a main part of a lid of an open container can showing a main part of a conventional pull tab.

10 is a cross-sectional view of a main part of a lid of the open container can of FIG. 9.

[Explanation of symbols]

 1 can lid 2 pull tab 3 opening lid 4 connecting portion 8 score line 9 lowland panel 12 fragile part, auxiliary score line 13 reinforcing protrusion 14 fitting protrusion 15 fitting protrusion 16 fitting protrusion 17 reinforcing protrusion 19 high altitude panel 20 auxiliary score line

[Procedure amendment]

[Submission date] September 7, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

As in the above, the trapezoidal protrusion is seen from the cross section, but the following method is suitable for the protrusion processing. High-strength aluminum was used as the material. First, the first molding is first pressed in the opposite direction from the overhanging direction, then inverted to the overhanging side, and then a predetermined trapezoidal overhanging is finished. Further, it is possible to use a head having a round head and a narrow neck portion, or a material having a satin surface so that it is difficult to pull out at the time of fitting. It is also suitable to have a function similar to a so-called snap or hook. Good results were confirmed without significant thinning or excess thickness. For example, round the head and narrow the neck
The following conventional techniques are preferably used as the method. Figure
6, the fitting protrusion 14 has a fitting protrusion 15
And the fitting protrusion 15 is fitted with the fitting protrusion 16,
The protrusion 14 or the fitting protrusion 16 is cylindrical at the top of the protrusion first.
To form. After that, press the cylindrical head and narrow the neck.
It is something. The forming procedure is one continuous press
Since it is desirable to form this shape, first fit the mating protrusion
A forming method in which the neck portion is narrowed after forming is suitable. What
Dimensional accuracy is the draft of the mold, work efficiency and can forming material
Should be decided by. Accuracy of 100 minutes is desirable
Is appropriate.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

As shown in FIG. 6, the opening lid 3 is folded in two, and the pull tab 2 is superposed thereon. The mating protrusions 14 and 15 and the mating protrusions 15 and 16 are shown as being fitted together and substantially parallel to the lowland panel 9. This is a schematic representation. It should be noted that the pull tab 2 does not necessarily have to be superposed on the opening lid 3 by the fitting protrusion as described above. The reason for this is that the connecting portion 4 sets the opening lid 3 in a state in which it is close to the opening lid 3 in advance. In order to make it more complete, for example, it is not prohibited to take the same fitting method as the fitting projection 14 or the like on the reinforcing projection 13 so as to be fitted to the pull tab 2 separately. In that case, it is effective to use the fitting projections 14 to 16 together with the fitting means. If the omitted method is adopted, a fitting means corresponding to the distance from the lowland panel 9 to the opening lid 3 should be adopted. In addition, FIG. 11 shows that the fitting protrusions 14, 15 and 16 are not
A lid for an open container can that is larger than the configuration of FIG.
FIG. 12 is a side view of the main part of FIG.
It Here, the lid of the open container can of FIG. 1 is a so-called gourd.
Although it is formed in a shape, one of the open parts of this gourd-shaped circular part
Form the outer diameters of the palate 3 and the fitting protrusion 16 so as to match each other.
It is an example. Similarly, the other of the opening lid 3 and the fitting projection 15
The outer diameter was made equal. Further, the fitting protrusion 14 is the one shown in FIG.
It is a larger version. As with FIG. 1, the fitting protrusion 14,
Outer diameter of the part that fits in the order of 15, 16 or fit with it
There is a difference in the inner diameter of the mating part,
The same effect as that of Fig. 1 is applied in that it is not easy to leave.
Show. Further, as shown in FIG. 12, each fitting protrusion 1
4 to 16, the fitting protrusion 15 and the fitting protrusion 16 are the same.
Similarly, it has the function of the opening lid 3. That is, the inside is opened
It has a structure that can discharge liquid. Fitting of fitting protrusions 14
The direction of the mating protrusion is opposite to that of FIG. pull
The stopper claw 21 presses the opening lid 3 of the container can when opening,
Has the effect of preventing the return, the container body or plastic
If the lid is chamfered etc. and attached, there is no danger and it is convenient
It

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a plan view of an essential part of a lid of an open container can of the present invention.

FIG. 2 is a cross-sectional view of essential parts of a pull tab and an opening lid of a lid of an opening container can of the present invention.

FIG. 3 is a plan view of relevant parts showing a state in the middle of opening of the lid of the open container can of the present invention.

FIG. 4 is a cross-sectional view of essential parts showing a state partway through the opening of the lid of the open container can.

FIG. 5 is a plan view of relevant parts showing a state after opening of the open container can of the present invention.

FIG. 6 is an enlarged sectional view of an essential part showing a state in which a pull tab after opening of a lid of an open container can and an opening lid are overlapped with each other.

FIG. 7 is a plan view of a main part of a lid of a conventional open container can.

8 is a cross-sectional view of a main part of a lid of the open container can of FIG.

FIG. 9 is a plan view of a main part of a lid of an open container can showing a main part of a conventional pull tab.

10 is a cross-sectional view of a main part of a lid of the open container can of FIG.

FIG. 11: Pull tab and opening of lid of open container can of the present invention
It is a principal part sectional drawing of the part of a lid.

FIG. 12: Pull tab and opening of the lid of the open container can of the present invention
It is a principal part sectional drawing of FIG. 11 of a lid part.

[Explanation of reference symbols] 1 can lid 2 pull tab 3 opening lid 4 connecting portion 8 score line 9 lowland panel 12 fragile part, auxiliary score line 13 reinforcing protrusion 14 fitting protrusion 15 fitting protrusion 16 fitting protrusion 17 reinforcing protrusion 19 high altitude panel 20 Auxiliary score line 21 Detent claw 21

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Added

[Correction content]

FIG. 11

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 12

[Correction method] Added

[Correction content]

[Fig. 12] ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 23, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a lid of an open container can according to the present invention.

FIG. 2 is a sectional view of an essential part of a pull tab and an opening lid portion of a lid body of an opening container can of the present invention.

FIG. 3 is a plan view of essential parts showing a state in the middle of opening of the lid of the open container can of the present invention.

FIG. 4 is a cross-sectional view of essential parts showing a state partway through the opening of the lid of the open container can.

FIG. 5 is a plan view of essential parts showing a state after opening of the open container can of the present invention.

FIG. 6 is an enlarged cross-sectional view of essential parts showing a state in which the pull tab after opening of the lid of the open container can and the opening lid are overlapped with each other.

FIG. 7 is a plan view of a main part of a lid of a conventional open container can.

8 is a sectional view of a main part of a lid of the open container can of FIG. 7.

FIG. 9 is a plan view of a main part of a lid of an open container can showing a main part of a conventional pull tab.

10 is a cross-sectional view of a main part of a lid of the open container can of FIG. 9.

[Explanation of reference symbols] 1 can lid 2 pull tab 3 opening lid 4 connecting portion 8 score line 9 lowland panel 12 fragile part, auxiliary score line 13 reinforcing protrusion 14 fitting protrusion 15 fitting protrusion 16 fitting protrusion 17 reinforcing protrusion 19 high altitude panel 20 Auxiliary score line

Claims (5)

[Claims] 1. A lid of an open container can in which a pull tab is opened and a plurality of open lids and pull tabs are overlapped and placed on a lid, wherein the open lid and the lid are A lid for an open container can, wherein the lid is connected and fitted by a connecting projection provided on the body. 2. The lid of an open container can according to claim 1, wherein a weakened portion or an auxiliary score line is provided at a position where the opening lid is bent in plural. 3. The lid body for an open container can according to claim 1, wherein the open lid has an elliptical shape or an 8-shaped shape. 4. The lid for an open container can according to claim 2, wherein the fragile portion or the auxiliary score line is provided on the outer surface of the lid. 5. The opening lid has an 8-shaped shape, and a notch is formed in at least a part of a neck portion of the opening lid.
Or the lid of the open container can according to item 4.