JPH0597143A - Can body being easily crashed - Google Patents

Abstract

PURPOSE:To provide a can for drink which can easily and safety be crashed before disposal. CONSTITUTION:An upper bead 3 is formed in the vicinity of an upper end of a can body 2 of a can 1, and a lower bead 4 is in the vicinity of a lower end of the can body 2 of the can 1. The upper and lower beads are shaped in a recessed bead whose cross section is of V-shape and provided on all periphery of the can body 2 in parallel to its bottom surface 5. At a part sandwiched by the upper and lower beads 3 and 4 of the can body 2, slantwise beads 6 are formed with the right shoulder up when viewed from the front. The slantwise beads 6 are shaped in a recessed bead whose cross section is of V-shape and formed on all the periphery of the can body 2 with an equal space between each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can body that can be easily crushed.

[0002]

2. Description of the Related Art Conventionally, since the volume of a beverage can does not change before and after the contents are drunk, it becomes unnecessarily bulky after the contents have been drunk, and a large amount is required for disposal or collection. There is a problem that it is difficult to accumulate in the. Therefore, there is a demand for a can body that can be crushed to reduce its volume after drinking.

Various proposals have already been made for beverage cans that can be easily crushed, and a can body in which a plurality of concave beads are obliquely provided around the can body is known.

For example, Japanese Utility Model Laid-Open No. 58-121826 discloses a beverage can body in which a plurality of concave beads are obliquely formed around the can body. The concave bead of the can body is continuously formed in a spiral shape from the vicinity of the upper end to the vicinity of the lower end of the can body, and on any surface of the can body, vertically adjacent beads are equidistant from each other. There is.

According to the description of the publication, when the upper and lower sides of the beverage can are grasped by hand and the obliquely formed concave bead is twisted in a direction parallel to the bottom surface of the can, the concave shape is formed. Since the plate material between the bead and the concave bead flexes and is crushed along the spiral concave bead, it is said that the can body can be easily pressed and crushed by hand.

However, when the beverage can body is twisted by hand as described above, the can body is crushed by the concave bead in the entire height direction, and the hand body is grasped as the can body is crushed. There is an inconvenience that the part where it exists is also crushed and it becomes difficult to apply force. Further, in the can body, the center portion of the can body which is crushed and sharpened when the can body is twisted tends to project outward from the outer peripheral surface of the can body.

According to the study by the present inventors, it has been found that the above-mentioned inconvenience is caused by the concave bead being formed from the vicinity of the upper end portion to the vicinity of the lower end portion of the can body. Therefore, in order to solve the above-mentioned inconvenience, an oblique concave bead is provided only in the central portion of the can body, and an oblique concave bead is provided in the vicinity of the upper end and the lower end of the can body to be grasped by hand when twisting. It is also possible to use a can body that is not provided with.

However, when grasping the can body in order to twist the can body, more force is applied than when grasping the can body in order to drink the contents, so that the can body is the upper end portion of the can body. The vicinity and the vicinity of the lower end tend to deform in the diametrical direction. When the can body is deformed as described above, most of the force for grasping the can body is applied in a direction in which the can body is easily deformed, so that the force for twisting the can body is reduced. Also, since the part to be crushed is limited to the central part of the can body where the oblique concave bead is provided,
Sufficient compression cannot be obtained.

Therefore, it cannot be said that the inconvenience is essentially solved by the can body in which the oblique concave bead is provided only in the central portion of the can body.

[0010]

SUMMARY OF THE INVENTION Therefore, the present invention eliminates such inconvenience, and the portion grasped by hand when twisting the beverage can by hand is not easily deformed, and the applied force is applied to the can. It is an object of the present invention to provide a beverage can body that effectively acts in a twisting direction and can be crushed easily and safely, and has a sufficiently compressed volume when crushed.

[0011]

In order to achieve the above object, the simple crushing can body of the present invention is a can body having a cylindrical shape, wherein concave bead is provided in the vicinity of the upper end portion and the lower end portion of the can body, respectively. Parallel to the bottom surface of the can body and around the can body, and a plurality of concave beads are obliquely arranged at intervals around the entire portion sandwiched by the concave beads provided on the upper and lower sides of the can body. It is characterized by being formed into.

The obliquely formed concave beads may be formed by forming a plurality of concave beads at intervals on any surface of the can body, and a plurality of concave beads that are independent of each other are formed. Alternatively, the concave bead formed continuously in a spiral shape may be formed such that there is a space between the beads that are vertically adjacent to each other on the surface having the can body. Furthermore, a plurality of concave beads that are continuously formed in the spiral shape may be formed.

[0013]

According to such means, the vicinity of the upper end portion and the lower end portion of the can body is reinforced by the concave beads provided around the can body in parallel with the bottom surface of the can body, and the rigidity in the can body diameter direction is increased. Is improved. The action is due to the fact that when a force is applied in the lengthwise direction of the concave bead, the concave bead acts to reinforce the portion where it is provided. Therefore, when grasping the upper and lower sides of the can body by hand, it is difficult for the can body to deform such that it bends in the diameter direction of the can body.

On the other hand, the concave bead is vulnerable to the force acting in the width direction and is easily deformed so as to crush the bead. Therefore, the concave bead formed obliquely in the central portion of the can body is easily deformed when the concave bead is twisted in a direction parallel to the bottom surface of the can body to induce crushing of the central portion of the can body.

As a result, the concave bead provided above and below the can body so as to surround the can body retains its initial shape until the center part of the can body is crushed, so that the applied force is applied to the center of the can body. It works effectively as if you squeeze the part.

When the central portion of the can body is crushed, finally, the concave beads at the top and bottom of the can body are crushed and the volume of the can body is further compressed. The central portion of the can body is crushed by being twisted inward so that it does not project outward from the outer peripheral surface.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the simple crushable can body of the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a front view of the beverage can of this embodiment, and FIG. 2 is a front view of the beverage can of FIG.
FIG. 3 is a plan view showing the inside of the can body with the can lid removed in FIG.

As shown in FIG. 1, the beverage can according to this embodiment has a height of 122.5 mm and a plate thickness of about 0.1 mm, which is 350 m.
An upper bead 3 is provided at a position 3 cm from the upper end of the can body 2 of the aluminum two-piece can 1, and a lower bead 4 is provided at a position 2 cm from the lower end. Each of the upper bead 3 and the lower bead 4 is a concave bead having a width of 6 mm and a maximum depth of 1 mm and having a V-shaped cross section, and is formed parallel to the bottom surface 5 of the can body 1 and around the can body 2. Has been done.

A slanting bead 6 is formed on the can body 2 between the upper bead 3 and the lower bead 4. The diagonal bead 6 is a concave bead having a width of 6 mm, a maximum depth of 2 mm, and a length of 6 cm, and having a V-shaped cross section. It is formed diagonally. Twelve slanted beads 6 are provided on the entire circumference of the can body 2 at equal intervals.

The width of each bead is 2 to 20 mm.
Is preferably in the range, and the depth is preferably in the range of 4 mm or less. The length of the oblique bead 6 can be appropriately set according to the height of the can body 1, and the angle with respect to the horizontal is also appropriately set according to the length. Further, a plurality of slant beads 6 may be provided in the above-mentioned portion of the can body 2, but generally 6 to 24 slats are preferable.

The can body 1 is crushed by hand after the contents are provided for drinking. Next, the crushing operation of the can body 1 will be described. When the can body 1 is pressed and crushed, first, the can body 1 is grasped by putting fingers of both hands on the upper and lower sides of the can body 1. Then, can body 1
Is twisted in a direction in which the oblique bead 6 is parallel to the bottom surface 5, and first, the center part of the can body where the oblique bead 6 is provided is crushed. When the central portion of the can body is crushed, the can body 1 is further twisted in the above-mentioned direction to crush the upper bead 3 and the lower bead 4, and the crushing operation is completed.

In the can body 1, since the upper bead 3 and the lower bead 4 are provided near the upper and lower ends, respectively, to reinforce the rigidity, the can body 1 is grasped by hand in order to twist it in the crushing operation. However, it does not deform in the can body diameter direction.

Therefore, in the can body 1, the upper part of the upper bead 3 and the lower part of the lower bead 4 are crushed by crushing the center part of the can body where the oblique bead 6 is provided. The initial shape including 4 is maintained.

After the central portion of the can body is crushed, the can body 1 is further twisted to crush the upper bead 3 and the lower bead, so that the volume of the can body 1 is reduced as shown in FIG. It is further compressed. In FIG. 2, 1a is a crushed can body whose volume is compressed, 2a is a crushed can body center part,
Reference numeral 3a denotes a crushed upper bead, and 4a denotes a crushed lower bead, respectively.

In the crushed can body 1a, as shown in FIG. 3, the crushed can body center portion 2a is twisted inward, and the outer peripheral surface of the can body 2 before being crushed. Does not project outward from.

When the can 1 was simply twisted without applying a compressive force in the height direction, the torque at the beginning of deformation was measured and found to be 45 kgf. Also, by a female panelist,
When a crush test was conducted, all 10 panelists could crush easily. Buckling strength of can 1 is 24k
It was g.

Since the oblique bead 6 of the can body 1 is formed so as to rise to the right, a double tightening of the can lid can be performed without any abnormality with a lifting machine of 40 kg using a winding machine for processing in the clockwise direction. I was able to do it.

Although this embodiment shows an example applied to a two-piece can body, the present invention can be similarly applied to a three-piece can body.

[0030]

Comparative Example 1 FIG. 4 is a front view of a beverage can of this comparative example, and FIG. 5 is a front view showing a state where the beverage can of FIG. 4 is pressed and crushed.

In the beverage can of this comparative example, as shown in FIG. 4, an oblique bead 43 is formed on the can body 42 of a 350 ml aluminum two-piece can 41. The oblique bead 43 is a concave bead having a V-shaped cross section, and is formed obliquely upward from the front end to the vicinity of the lower end of the can body 42 in the front view. Twelve slanted beads 43 are provided on the entire circumference of the can body 42 at equal intervals.

The can body 41 is crushed by hand in the same manner as the can body 1 of the above-mentioned embodiment, but since the oblique bead 43 is formed from the vicinity of the upper end of the can body 42 to the vicinity of the lower end thereof, 41 is crushed over the entire height direction. Therefore, in the can body 41, as the can body 41 is crushed, portions of the can body 42 near the upper end portion and the lower end portion of the can body 42 that are grasped by hand are also crushed, so that it becomes difficult to apply force, and as shown in FIG. Central part 42 of the can body provided with the oblique beads 43
It cannot be crushed by sufficiently pressing a.

Further, at this time, the crushed can body center portion 42a forms a sharp portion 42b, and may protrude outward from the outer peripheral surface of the can body 42 before being crushed, possibly damaging the fingers.

As described above, the can body 41 of this comparative example.
Then, it is difficult to grasp the can body 41 at the time of crushing, and the sharp portion 4 is formed on the crushed can body 41a after the crushing process.
Yields 2b.

[0035]

Comparative Example 2 FIG. 6 is a front view of a beverage can of this comparative example, and FIG. 7 is a front view showing a state where the beverage can of FIG. 6 is pressed and crushed.

As shown in FIG. 6, the beverage can of this comparative example has a 350 ml aluminum two-piece can 61 with an oblique bead 63 provided at the center of the can body 62, near the upper end and at the lower end. The can body 1 is the same as the can body 1 of the above-described embodiment except that a concave bead having a V-shaped cross section that is parallel to the bottom surface 64 and surrounds the can body 62 is not provided in the vicinity.

The can body 61 is crushed by hand by hand in the same manner as the can body 1 of the above-mentioned embodiment, but a cross section parallel to the bottom surface 64 around the can body 62 near the upper end and the lower end of the can body 62. V
Since the letter-shaped concave bead is not provided, if the upper and lower portions of the can body 61 are grasped by hand for crushing, the vicinity of the upper end portion and the lower end portion of the can body 62 bends in the diameter direction of the can body 62. For this reason, the force acting in the direction of twisting the can body 61 is diminished, and as shown in FIG. 7, it is often not possible to sufficiently crush the can body central portion 62a provided with the oblique beads 63.

Even when the can body center portion 62a is sufficiently crushed, the portions grasped by hand near the upper end portion and the lower end portion of the can body 62 are not crushed, so the crushed can body 61a. Is larger than that of the can body 1a of the above-mentioned embodiment.

[0039]

As is apparent from the above, according to the can body of the present invention, when the can body is pressed and crushed, the vicinity of the upper end portion and the lower end portion of the can body is reinforced by the concave beads. Therefore, it is easy to grasp, and by grasping the vicinity of the upper end portion and the lower end portion of the can body and twisting the can body, it is possible to easily crush and crush.

Further, according to the can body of the present invention, not only the center part of the can body where the concave bead is obliquely provided is crushed, but also the concave bead provided so as to sandwich the center part of the can body. Further, since it is crushed, the volume of the can body can be sufficiently compressed.

Further, according to the can body of the present invention, since the crushed portion of the can body is screwed inward, the sharp portion does not project outward from the outer peripheral surface of the can body, and the fingers Does not touch.

Since the volume of the can body of the present invention is sufficiently compressed by crushing as described above, it can be accumulated in a large amount and is advantageous for disposal or recovery.

[Brief description of drawings]

FIG. 1 is a front view of a beverage can of this embodiment.

FIG. 2 is a front view showing a state where the beverage can body of FIG. 1 is pressed and crushed.

FIG. 3 is a plan view showing the inside of the can body with the can lid removed in FIG.

FIG. 4 is a front view of a beverage can of Comparative Example 1.

5 is a front view showing a state where the beverage can body of FIG. 4 is pressed and crushed. FIG.

6 is a front view of a beverage can of Comparative Example 2. FIG.

FIG. 7 is a front view showing a state where the beverage can body of FIG. 6 is pressed and crushed.

[Explanation of symbols]

1 ... Can body, 2 ... Can body, 3 ... Concave bead, 4 ... Concave bead, 6 ... Concave bead

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kunitoshi Yoshimura 839-1 Kamuro, Iwatsuki-shi, Saitama Kitakai Seikan Co., Ltd., Research & Development Headquarters (72) Shinichi Tsukada 839-1, Kamuro, Iwatsuki-shi, Saitama Hokkai Seikan Co., Ltd. Research & Development Headquarters (72) Inventor Satoshi Nakata 839-1, Kamuro, Iwatsuki City, Saitama Prefecture Hokai Kan Seisha Co., Ltd. Research & Development Headquarters

Claims (1)

[Claims] 1. A can body having a cylindrical shape is provided with concave beads near the upper end and the lower end of a can body in parallel with the bottom surface of the can body and around the can body. A simple crushable can body characterized in that a plurality of concave beads are obliquely formed at intervals over the entire circumference of a portion sandwiched between the concave beads provided above and below.