JPH01274863A - Can - Google Patents

Abstract

PURPOSE:To obtain a hermetically sealed stable can having excellent fashionability and a firmly roll-clamped part by positioning a seam band in a can barrel, and sectorially spreading the lower end of the can barrel. CONSTITUTION:The can barrel 3 is necked like an ordinary necking can, the projecting degree of the projecting part 5 is determined by the drawing degree of necking, and the projecting degree increases as the drawing degree of necking is made lower than the sum of the seam band thickness and the can barrel sheet thickness. Flanging is carried out after necking to obtain a can barrel 3. A can lid is clamped to the can barrel 3 by an ordinary seamer in double rolls, and a double-roll can body is obtained. The seam band 1 is pushed in by a push-fitting device to a position inside an edge 4 where the top 2 of the band 1 is made almost flush with the folded edge 4 of the can barrel 3, and a desired projecting can body can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a can in which a double-sealed seam band is not exposed outside the can body.

BACKGROUND OF THE INVENTION Conventionally, three-piece cans or two-piece cans are sealed by double-sealing a can lid around the open end of a five-piece can body. Double seaming has the advantage of being strong, durable, and has a high sealing ability. However, in double seaming, the lid curl part is placed over the can body flange formed outward at the end of the can body and seamed outwards from the can body, so the seam band protrudes from the outside surface of the can body. It has become. Therefore, compared to molded containers, bottles, etc., they lack symmetry and cannot be printed all the way to the edges of the can body, resulting in poor fashionability.

On the other hand, with the diversification of designs and the trend towards fashion in our daily lives, fashionability is now being sought not only for containers such as cosmetic containers, which particularly require fashionability, but also for food and beverage containers. In order to meet this requirement, instead of the conventional double seaming method, the end of one can body is bent inward double to form a hook portion that opens upward, and the hook of the can lid is attached to the hook portion. The can lid is fixed by engaging and pressure forming, or the can lid is double seamed on the inside, which is the opposite of the conventional double seaming method, so that the seam band is located inside the can body. is proposed.

The problem that the invention is trying to solve is that the conventional method of tightening the can lid so that the seam band is located inside the can body simply involves engaging the hook parts and bonding them under pressure. 1 strength is weak because there is
It has the drawbacks of lacking durability and poor sealing ability, and can only be applied to limited contents. In addition, there is a special tightening 'H? ! There were problems such as the need for Furthermore, there is a problem with products that are seamed in a manner opposite to the conventional double seaming method, as there is no device that automatically performs the seaming at high speed, and that it can only be applied to very special production lines with a small number of products. be.

The present invention has been devised in view of the above-mentioned circumstances, and is extremely fashionable, has strong sealing ability, and has high sealing ability, and can be double-wrapped using a conventional double-sealing device. The object of the present invention is to provide a can that can be easily obtained by simply processing a sealed product.

Means for Solving the Problems The present invention provides a can with a double-sealed lid at the open end of the can body, in which the seam band is located inside the can body and the top part is folded over the can body. It is pushed in so that it is located on the same plane as the end edge or inside the can body from the end edge, and the end of the can body is flared out. We were able to solve the above problems by adopting technical means characterized by the following.

Operation The can of the present invention can be easily manufactured by pushing the top of the seam band of a double-sealed can into the inside of the can body using a conventional double-sealing machine with a simple pushing device added. Can be formed. Therefore, the structure of the seaming part is a double seaming structure similar to the conventional one.

Provides durability and high sealing ability.

In particular, when the present invention is applied to the bottom lid of a 3-piece can, the seam band is located inside the can body, and the lower end of the can body curves continuously from the upper part of the can body to form a flared shape. Therefore, it provides a sense of stability and has a much better aesthetic effect than ordinary straight cans, making it suitable for art cans that require aesthetic effects, such as containers for cosmetics.

Example Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 1 shows the seaming structure of the present invention, in which the top 2 of the double-sealed seam band 1 is on the same level as the folded edge 4 of the can body 3, or inside the can body from the folded edge 4 of the can body 3. The end of the can body has an overhanging portion 5 that expands toward the end.

A can body having such a seamed structure can be obtained as follows.

6 Can bodies are necked in the same way as regular necking cans.The degree of necking in the necking process determines the degree of overhang of the overhanging portion 5, and the degree of necking in the necking process is the sum of the seam band thickness and can body plate thickness. The smaller it is, the greater the degree of overhang. Conversely, as the degree of necking is increased, the overhanging portion becomes smaller, and conversely it begins to overhang inward. Following necking processing, flange processing is performed to obtain a can body. A can lid is double-sealed to the can body using an ordinary seamer to obtain a double-sealed can body. The seam band of the can body is pushed using a pushing device until the top 2 of the seam band 1 is approximately flush with the folded edge 4 of the can body 3 or is positioned further inward from the edge 4 of the can body. By doing so, the desired overhang can body can be obtained.

FIG. 2 shows a case where the present invention is applied to a three-piece aerosol can 7. In this can, a top lid 8 with a spray device is attached to the upper opening of the can body 1 of the 3-piece can by normal double-sealing, and a double-sealing part is attached to the bottom opening by the above method. is located inside the can body and a bottom can lid 9 is attached so that the lower end of the can body protrudes. Therefore, unlike molded containers such as two-piece cans and bottles, the lower end of the can body does not have a protruding part, and moreover, it flares out at the end, giving it an excellent aesthetic effect and making it suitable for cosmetic containers, etc. Suitable for art cans. Furthermore, since the can has a double seam structure similar to the conventional seam structure, durability and high sealing performance were obtained.

FIG. 3 shows an embodiment in which the present invention is applied to a Dresseal can 10. The can is ideal for coffee containers and the like.

In addition, although the said Example showed the case where it applied to the bottom lid of a can, it cannot be overemphasized that this invention is not necessarily limited to a bottom lid, but can be applied also to a top lid.

Effects As described above, according to the present invention, the seam band is located inside the can body, and the lower end of the can body flares out, giving a sense of stability and having an extremely high aesthetic effect. Excellent fashion.

Furthermore, it is possible to obtain a can with a strong seam portion and high sealing ability. The can can be easily obtained by employing a conventional double sear and a simple pushing device.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; Fig. 1 is a plan view of the main parts of a can, Fig. 2 is a side view of an embodiment applied to an aerosol can, and Fig. 3 is a side view of an embodiment applied to a Dressel can. FIG. 1°: Seam band 2: Top of seam band 3: Can body 4: Lower edge of can body 5: Overhanging part 6-layer can lid 7:
Aerosol can 8: Top lid 9: Bottom lid 1-0 Nidredge Le can Patent applicant Toyo Seihato Co., Ltd. Applicant agent Patent attorney Fumio Sato (and 2 others) Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1) In a can with a double-sealed lid on the open end of the can body,
The seam band is located inside the can body, and is pushed in such a way that its top is substantially flush with the folded edge of the can body or positioned further inward from the folded edge of the can body, and A can characterized by an end that flares out.