JPS633965Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seal breakage prevention structure for cans with lids, particularly large cans such as 5-gallon cans with lids.

It is common practice to seal the fitting part between the lid and the can body of a can with a lid with adhesive tape, for example with Nori and Kutsky cans, and the same thing is done with 5-gallon cans with lids. It is also carried out in

In these cans, usually, as shown in FIG.
while providing a lower edge 22 of the circumferential wall 21 of the lid body 2.
By providing a curled portion on the outside of the can body 1 and covering the lid 2 on the can body 1, the curled portion is brought into contact with and supported by the protrusion 12, and then a suitable width is formed above and below these abutting portions. Hermetic sealing is achieved by applying the adhesive tape 3 in a headband shape.

Thus, such cans with lids provide a sufficient seal when the can itself is small or contains light contents, but they do not provide sufficient sealing for relatively large cans such as 5-gallon cans. When containing heavy contents, the seals often broke during storage or transportation of multiple cans stacked on top of each other. That is, as is clear from FIG. 1, portions of the hermetic seals 3 of adjacent cans protrude from the sides of the respective cans, making them susceptible to damage due to friction. In addition, when such cans are transported one by one by hand with a belt tied around the vertical center, the seal 3 may be damaged due to the difference in distortion between the can body 1 and the lid body 2.
The can may peel off or break, and especially if the can has a square horizontal cross section, the degree of damage is high at the corners of the diagonal direction, which is the axis. It was.

Damage to the seal 3 as described above is serious when the contents are easily deteriorated or putrefied by contact with the outside air, and the can may repeatedly deform and restore itself due to external forces received during transportation and storage. As a result, a pumping action is added, which causes outside air to be sucked into the can, contaminating the contents.

In addition, such cans with lids have other problems such as insufficient strength and labels on the outer surface of the can body 1 are easily damaged during transportation and storage.

The present invention has been devised in view of the above points, and provides a can with a high-strength lid that can prevent damage to the seal and labels.

That is, the can with a lid of the present invention consists of a rectangular can body with an upper opening, and a lid body having a circumferential side wall that covers the outer surface of the upper end of the body wall of the can body, and the lid is attached to the can body. In a can with a lid of the type in which a headband-shaped seal is applied between the circumferential side wall of the lid and the trunk wall of the can body after the body is covered, the lid is isolated downward from the opening of the can body. A vertically elongated protrusion protruding outward is provided at the corner of the body, and the separation distance between the protrusion and the opening is set so that when the lid is placed over the can body, the circumferential side wall of the lid The dimensions are sufficient to provide a space for pasting the sealing seal between the lower edge of the rim and the protrusion, and the protrusion distance to the outside of the protrusion is
The present invention is characterized in that, when the above-mentioned seal is applied, the above-mentioned protrusion has a sufficient dimension to sufficiently protrude outward from the outer surface of the above-mentioned seal.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the lidded can of the present invention shown in the drawings will be described below.

FIG. 2 shows a longitudinal sectional view of the main parts of an embodiment of the present invention placed side by side, in which 1 is a square can body with an upper opening, and 2 is an upper end of the body wall 10 of the can body 1. A lid body 3 having a circumferential wall 21 covering the outer surface of the can body 1 is formed into a headband shape between the circumferential side wall 21 of the lid body 2 and the trunk wall 10 of the can body 1 after the lid body 2 is placed on the can body 1. This is a sealed seal.

Therefore, in the can with a lid of the present invention, the second
As shown in Figs. 1, 3, and 4, a vertically long protrusion 12 is provided on the corner of the body wall 10 of the can body 1, spaced downward from the end of the opening 11, and protruding outward. There is. The separation distance between these protrusions 12 and the opening 11 is such that when the lid 2 is placed on the can body 1, the lower edge of the circumferential wall 21 of the lid 2 (in the case of the embodiment, it is curled) ) 22 and the protrusion 12 to provide a sealing margin 13 for the seal, and the distance that these protrusions 12 protrude outward is such that when the seal 3 is applied, the seal is sealed. The dimensions are such that the protrusion 12 sufficiently protrudes outward from the outer surface of the seal 3.

Therefore, according to the lidded can of the present invention constructed as described above, the vertically long protrusion 12 can prevent the hermetic seal 3 from coming into contact with adjacent cans, and also increases the resistance to distortion. Therefore, damage to the seal 3 can be prevented, the strength of the can body 1 can be improved, and labels attached to the surface of the can body 1 can be prevented from being damaged. .

It is preferable that the vertically elongated protrusion 12 be provided to the lower end of the corner of the can body 1, leaving the sealing margin 13 as described above at the upper part of the corner of the can body 1, as shown in FIG. However, as shown in FIG. 4, it is only necessary to extend it slightly above the lower end of the corner of the can body 1. Further, the vertically long protrusions 12 may be formed by attaching them to the corners of the can body 1, or may be formed by attaching them to the corners of the can body 1.
It may also be formed by extruding the corner portions using a press or the like.

Next, other embodiments of the present invention will be described. In each embodiment, the protrusion 12 is vertically provided at the corner of the can body 1, and its dimensions are the same as those described above. It satisfies the following conditions.

In the embodiment shown in FIG. 5, the protrusion 1 of the can body 1
A second protrusion 14 is provided around the trunk wall 10 of the can body 1, located above the can body 2 and separated from the end of the opening 11 of the can body 1. The second protrusion 14 is located close to the lower edge 22 of the peripheral wall 21 of the lid 2 when the lid 2 is placed on the can body 1,
Moreover, it is made to protrude to the outside of the body wall 10 by a size such that it comes into pressure contact with the inner surface of the peripheral side wall 21 of the lid body 2. Therefore, according to this embodiment, play between the can body 1 and the lid 2 can be eliminated, and the protrusion 12
The double protrusion consisting of the second protrusion 14 and the second protrusion 14 can increase the resistance to distortion of the lidded can due to external force. Moreover, the lower edge 22 of the lid body 2
It is possible to reduce the difference in strain between the sealing material and the pasting margin of the sealing seal 3, and the effect of preventing damage to the sealing seal 3 can be further improved.

In the embodiment of FIG. 6, the lower edge 2 of the lid body 2
The curled portion 2 is flush with the outer surface of the circumferential wall 21 of the lid 2, and the inner surface of the curled portion is press-molded so as to protrude inward.
The lower edge 22 of the lid body 2 is connected to the second side of the can body 1.
The lower edge of the protrusion 14 is tightly fitted and engaged.
Therefore, according to this embodiment, the lid body 2 and the can body 1
The adhesion with the body wall 10 can be increased,
The effect of preventing damage to the seal 3 due to the difference in strain can be further improved. Also,
The outer surface of the lower edge 22 of the circumferential wall 21 of the lid body 2 is aligned with the outer surface of the circumferential wall 21, and the margin of the seal 3 on the circumferential wall 21 of the lid body 2 and the seal seal on the trunk wall 10 are aligned. Since the difference in level with the pasting margin 13 is reduced, the difference in tension between the sealing seal 3 is reduced, and damage due to the difference in strain between the lid 2 and the can body 1 can be prevented.

In the embodiment of FIGS. 7 and 8, the trunk wall 1
The outer surface of the pasting margin 13 of the sealing seal No. 0 is attached to the lid body 2.
The outer surfaces of the peripheral side wall 21 and the lower edge 22 thereof are aligned on one plane. Therefore, according to these embodiments, the seal 3 can be tensioned uniformly throughout, and damage caused by the difference in strain between the lid body 2 and the can body 1 can be more effectively prevented. .

In the embodiment shown in FIG. 9, the barrel wall 1 of the can body 1
The outer surface of the pasting margin 13 of the sealing seal No. 0 is attached to the lid body 2.
It is made to project outward from the outer surface of the peripheral side wall 21 and its lower edge 22. Generally, a lid body 2 and a can body 1
The breakage of the seal 3 due to the strain difference between the lid body 2 and the peripheral wall 21 is due to the difference between the outward strain on the peripheral side wall 21 of the lid body 2, especially its lower edge 22, and the outward strain on the portion of the can body 1 adjacent thereto. Although in many cases, according to this embodiment, the portion of the seal 3 bonded to the outer surface of the lower edge 22 of the peripheral side wall 21 of the lid body 2 is larger than the portion of the seal 3 bonded to the sealing margin 13 of the seal. Since this portion is under a weaker tension, damage to the seal 3 can be more effectively prevented when the above-mentioned strain difference occurs.

In the embodiments shown in FIGS. 7 and 9, the lower edge 22 of the circumferential wall 21 of the lid body 2 that protrudes inward is connected to the second protrusion 14 and the sealing margin 13. It is compressed and fitted into a groove 15 formed between them. Therefore, according to these embodiments, the protrusion 12, the second protrusion 14, and the groove 15 further increase the resistance to deformation of the can body 1, and more effectively prevent damage to the seal 3. It can be prevented.

Note that at least the outer surface of the lower edge 22 of the peripheral wall 21 of the lid body 2 is pressed flat to avoid applying partial tension to the seal 3 and prevent damage to the seal 3. can do.

As mentioned above, the can with a lid of the present invention is provided with a specific vertically long protrusion that is spaced downward from the opening of the can body and projects outward on the corner of the body of the can body. It has high strength and has great practical effects, such as being able to prevent seals and labels from being damaged during transportation and storage.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the main parts of a conventional can shown side by side, Fig. 2 is a longitudinal sectional view of the main parts of an embodiment of the present invention shown side by side, and Fig. 3 is a perspective view of a can body in one embodiment of the present invention, FIG. 4 is a perspective view of a can body in another embodiment of the present invention, FIGS. 5, 6, 7, 8, and 9. Each figure is a longitudinal cross-sectional view of a main part of still another embodiment of the present invention. 1...can body, 10... body wall of can body, 11...
...Opening part of the can body, 12...Protrusion of the can body, 13
...Amount for pasting the seal on the can body, 2...
...Lid body, 21... Circumferential side wall of the lid body, 22... Lower edge of the circumferential side wall of the lid body, 3... Sealing seal.

Claims (1)

[Scope of utility model registration request] It consists of a rectangular can body with an upper opening, and a lid body having a circumferential wall that covers the outer surface of the upper end of the body wall of the can body, and after the can body is covered with the lid body,
In a can with a lid of the type in which a headband-shaped seal is provided between the circumferential side wall of the lid and the body wall of the can body, a corner of the body is spaced downwardly from the opening of the can body. A vertically long protrusion protruding outward is provided on the can body, and the distance between the protrusion and the opening is set such that when the lid is placed on the can body, the lower edge of the circumferential wall of the lid and the The dimensions should be sufficient to provide a space for pasting the seal between the protrusions and the protrusions, and the protrusion distance should be such that when the seal is applied, the protrusions extend beyond the outer surface of the seal. A can with a lid, characterized by having dimensions sufficient to protrude outward.