JPH08133279A - Can cover of beverage container - Google Patents

Abstract

PURPOSE: To prevent the contents from transferring along the side face of a can body, by providing a closing flap surrounded by a score line formed at the opposite side of a pull tab and an opening formed by cutting the score line, at the nearby position of the crossing of the center line of the can body where the can cover is wound up and the panel. CONSTITUTION: The can cover 1 which is wound up to the opening of the can body 2 is constituted of a circular flange 3 and a panel 4 surrounded by the circular flange 3. A pull tab 6 is attached to the panel 4 through a rivet 5 and a score line and a closing flap 8 are provided at the opposite side of the pull tab 6. In this time, the closing flap 8 and the opening 8a are formed so that they are positioned near the intersection (0 point) of the center line of can body 2 and the panel 4. That is, the position of the closing flap 8 and the opening 8a are isolated from the side face of can body 2. In this way, at the initial time to take out the contents, the contents are prevented from transferring along the side face of can body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can lid of a can body in which a beverage such as beer or carbonic acid is stored and sealed, and a so-called can lid of a beverage container in which so-called backing is prevented when extracting contents. Regarding

[0002]

2. Description of the Related Art As a conventional can lid, for example, there is one shown in FIG. In FIG. 9, reference numeral 50 denotes a can body, and can body 5
A can lid 51 is wound around the opening 0. This can lid 5
1 comprises an annular flange portion 52 and a panel portion 53 surrounded by the annular flange portion 52, and a pull tab 55 is fixed to the panel portion 53 via a rivet 54. A score line 56 is formed on the side facing the pulling tab 55 via the rivet 54.
Surrounded by 6 is a closure piece 57. In the conventional general can lid, the closing piece 57 and the score line 5 are used.
The opening hole formed by cutting 6 is the annular flange portion 5
It is formed at a position extremely close to 2.

In such a conventional general can lid, the closing piece 57 is formed near the annular flange portion 52,
Moreover, since the distance between the opening hole and the side surface of the body of the can is extremely short, after opening the can lid by pulling up the pull tab 55,
Simply tilting the can body 50 slightly (see FIG. 6 (b))
The contents are extracted outside.

[0004]

However, in such an invention, as shown in FIG. 9, in the initial stage of extracting the contents, the contents move along the side surface of the body of the can body 50, and In the vicinity of the bottom of the body 50, there was a drawback that a back-covering phenomenon of dropping downward occurred.

The present invention has been made in view of such conventional problems. In a can body for storing a beverage such as beer or carbonic acid, in the initial stage of extracting the content, the content is the body of the can body. It is an object of the present invention to provide a can lid for a beverage container, which is movable along a side surface and which prevents backing.

[0006]

In order to solve this problem, the present invention is directed to an annular flange portion, a panel portion surrounded by the annular flange portion, and a side of the panel portion facing a pull tab via a rivet. In the can lid of the beverage container, which is surrounded by the score line formed in the above, and is composed of a closing piece, the opening hole formed by cutting the closing piece and the score line is a can body around which the can lid is wound. It is a can lid of a beverage container characterized by being present in the vicinity of the intersection of the center line and the panel portion, and the score line formed on the outer periphery of the closing piece as the first embodiment has a difference between the start point and the end point. The second embodiment is characterized in that the score line formed on the outer circumference of the closing piece is continuous at the start point and the end point.

[0007]

The operation of the present invention having the above construction will be described. Pulling up on the pull tab cuts the closure along the score line. Then, the closing piece is pushed down into the can body, or the closing piece is deleted and the can lid is opened. When the contents are extracted from the can according to the present invention, the inclination angle of the can at the initial stage of extraction is as shown in FIG.
As shown in (a), the inclination angle α is larger than the inclination angle β of the conventional can body. In the present invention, this is because the tip portion P of the opening hole formed by cutting the score line is brought close to the intersection O of the center line of the can and the panel portion, in other words, the opening hole. This is because the tip P is separated from the side surface of the body of the can, and as a result, the contents are not extracted unless the can is tilted at a large inclination angle α. In addition, the initial extraction speed of the contents in this case is not only faster than that of the conventional one, and the inclination angle α of the side surface of the can body is larger than the conventional inclination angle β, so that the contents are It is possible to prevent the body part from being pulled in the lateral direction. Therefore, it is possible to prevent the back-covering phenomenon in the initial stage of extracting the contents.

Next, the present invention will be described with reference to the drawings. 1 to 8 are drawings showing an embodiment of the present invention, and FIGS. 1 to 6 show a first embodiment of the present invention, in which a score line formed on the panel portion 4 of the can lid 1 is shown. In the case where 7 is discontinuous at the start point and the end point, that is, after the can is opened, the closing piece 8 does not separate from the panel portion 4 of the can lid 1 in the tab non-separation type can lid 1. The can lid 1 wound around the opening of the can body 2 includes an annular flange portion 3 and a panel 4 surrounded by the annular flange portion 3. The panel portion 4 is provided with a rivet 5 and a pull tab. 6 is attached. Then, on the side facing the pull tab 6,
A score line 7 and a closing piece 8 are provided.

The feature of the present invention resides in that the closing piece 8 and the opening 8a exist near the intersection (point O in the figure) of the center line of the can 2 and the panel 4. That is, the inventor separates the positions of the closing piece 8 and the opening 8a from the side surface of the body of the can body 2.

Then, it was attempted to specify the positions of the closing piece 8 and the opening 8a capable of preventing backing in relation to the can body 2. As shown in FIGS. 2 and 3, the outer diameter of the can body; B, the radius of the can body; R, the opening 8 from the side surface of the body of the can body, respectively.
Distance to the tip P of a; A is A / R × 100
The larger the value of Z (hereinafter referred to as Z) is, the closer the tip P of the opening 8a is to the point O, and conversely, if the value of Z is smaller,
The tip P of the opening 8a comes close to the side surface of the body of the can body 2.

Then, the following four modes of can bodies (A) and (B)
Regarding (C) and (D), the presence or absence of backing in the initial stage of extraction was examined.

[Table 1]

From the test results, in the beverage can, if the value of Z is 40% or less, the contents are extracted with the inclination angle of the can body being small, and conversely, if it is more than 40%, the inclination of the can body is increased. If the corners are not enlarged, the contents will not be extracted. And
The inventor has found that when the value of Z is larger than 40%, backing does not occur in the initial stage of extracting the contents.

FIGS. 7 and 8 show the second embodiment. When the score line 7 formed on the panel portion of the can body 1 is continuous at the start point and the end point, that is, after opening the can,
The closure piece 8 is a tab-separated type can lid which is separated from the panel 4 of the can lid 1. In this case, the situation of back cover generation is the same as that of the tab non-separation method.

[0014]

As described above, according to the present invention, in the beverage container, at the initial stage of extracting the contents,
This has the effect of preventing backing, in which the contents move along the side surface of the body of the can body.

[Brief description of drawings]

FIG. 1 is a plan view showing a can lid of a first embodiment according to the invention.

FIG. 2 is a plan view showing a state in which the can lid of the first embodiment according to the present invention is opened.

FIG. 3 is a longitudinal sectional view showing a can body and a can lid according to the first embodiment of the present invention.

FIG. 4 is a plan view of the can lid showing the case where the opening hole has a circular diameter in the first embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which the contents are extracted from the container of the first embodiment of the present invention.

FIG. 6 is a cross-sectional view (a) showing a state in which the contents are extracted from the container according to the present invention, and a cross-sectional view (b) showing a state in which the contents are extracted from the conventional container.

FIG. 7 is a plan view showing a can lid of a second embodiment of the present invention.

FIG. 8 is a plan view showing a state in which the can lid of the second embodiment of the present invention is opened.

FIG. 9 is a perspective view showing a state where the contents are extracted from a conventional container.

[Explanation of symbols]

 1 Can Lid 2 Can Body 3 Annular Flange Part 4 Panel Part 5 Rivets 6 Tensile Tab 7 Score Line 8 Closing Piece 8a Opening Hole

Claims (3)

[Claims] 1. An annular flange portion, a panel portion surrounded by the annular flange portion, and a rivet on the panel portion,
In a can lid of a beverage container, which is surrounded by a score line formed on the side facing the pulling tab and is composed of a closing piece, an opening hole formed by cutting the closing piece and the score line has a can lid. A can lid for a beverage container, which is present in the vicinity of the intersection of the center line of the can body around which the is fastened and the panel portion. 2. The can lid for a beverage container according to claim 1, wherein the score line formed on the outer periphery of the closing piece is discontinuous at the start point and the end point. 3. The can lid for a beverage container according to claim 1, wherein the score line formed on the outer periphery of the closing piece is continuous at a start point and an end point.