JPH0635965Y2 - Aluminum foil seal can - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an aluminum foil seal can.

(Prior Art) In a conventional can filled with oil and fat foods such as butter, cheese and margarine, a metal inner lid is wound around the can.

(Problems to be Solved by the Invention) In the conventional metal can as described above, a can opener is required at the time of opening, but there is a drawback that fingers are easily damaged during this can open.

Therefore, there is a demand for the development of a can for foods and fats that is easy to open and has a sealing property equivalent to that of a metal inner lid.

This proposal meets the above demands, and uses an aluminum foil instead of the metal inner lid for sealing to obtain an easily-openable aluminum foil seal can that has the same sealing performance as the metal inner lid. That is the purpose.

(Means for Solving the Problems) In order to achieve the above objectives, the present proposal has taken the following means.

That is, the end of the aluminum foil lid that is sealed to the outward flange curl portion of the metal can into which the decorative lid is fitted ends in front of the maximum diameter of the curl portion. It is a can.

Generally, metal cans sealed with aluminum foil have high sealing performance, easy opening performance, simplified manufacturing process and packaging process, and relatively low cost due to low material cost. Widely used for the reason. However, on the other hand, there is a problem that the aluminum foil is subjected to an impact from the outside during the distribution process or the display at the store, or the aluminum foil is torn or peeled when stacked. Furthermore, the aluminum foil is peeled off at the consumption stage, and when only a part of the contents is used, the remaining contents must be preserved by an appropriate method. For this reason, a decorative lid is further applied to the upper surface sealed with aluminum foil, but if the tip of the sealed aluminum foil protrudes from the flange curl part, when the consumer removes the decorative lid, the sharp tip is used. After removing the aluminum foil and problems such as finger damage, the diameter of the flange curl becomes smaller,
There is a problem that the resealability of the cosmetic lid becomes poor and the remaining contents cannot be protected. Therefore, the present invention is designed to solve these problems and maximize the advantages of the aluminum foil seal, and has the above-described configuration.

(Operation) In the can of the present proposal, when the aluminum foil lid material is sealed on the outward flange curl, the end of the can is curled so that it does not protrude from the curl of the can. , Fit the decorative lid (metal lid).

(Example) Hereinafter, it demonstrates based on the Example shown in drawing.

In FIG. 1, (1) is a can body, and an outward flange curl portion (2) is formed on the upper edge thereof.

Then, the aluminum foil (3) cover material is the flange curl portion (2)
The end portion (4) of the curl portion ends before the maximum diameter portion (5), and the caulking portion is removed (a).

The structure of the aluminum foil cover material is, for example, an adhesive layer (50μ), an aluminum foil (50μ), an anchor coat, a printing ink, and a varnish (2μ) in this order from the lower side in contact with the can body to the upper side. As shown in FIG. 2, an elastic resin seal plate (6) made of silicon rubber or the like is formed on an aluminum foil without using a commonly used metal heat plate for sealing which is formed. Cover with a lid and high-frequency seal.

By appropriately selecting the hardness of the material of the sealing plate (6) according to the purpose, the flange curl portion (2) of the can is rolled into the sealing plate (6), and the sealing area becomes large.

That is, the curling portion is also sealed with the aluminum foil lid material.

With the sealing method using a metal hot plate, the sealing area is very narrow and linear, so the stability of the seal cannot be obtained.

Further, the top surface portion (3a) of the aluminum foil lid material is recessed inward from the apex of the curl portion of the can by about 0.5 to 10 mm, preferably 1 to 2 mm [see FIG. 3 (a)].

A rib (7) is formed on the concave portion of the top surface (3a). When the ribs are formed, the lid member is given strength and curling of the lid member can be prevented.

The lid member (3) is formed in a concave shape in advance, and the rib (7) is formed on this.

The aluminum foil seal can of the present invention is covered with a metallic decorative lid (8) on the aluminum foil lid for the purpose of display effect and protection of the aluminum foil lid, that is, prevention of pinholes.

Then, in order to maintain the fitting property of the decorative lid (8) to the metal can, especially the resealing property, several ribs (10) are provided on the curling portion on the circumference (see FIG. 4). ).

As shown in FIG. 5, when the end (3b) of the aluminum foil lid (3) is projected to the outside of the flange curl portion (2) of the can, when the cosmetic lid (8) is opened, the fingers are made of aluminum. It may damage the foil and damage it.

Also, the end portion (3b) of the aluminum foil lid is crimped, but since the crimped portion of the aluminum foil lid projects from the flange curl portion, it must be rolled up once before opening.

Therefore, in the present proposal, as shown in FIG. 6, the tongue piece (9)
Since it is provided at the end of the aluminum foil lid, it can be easily opened (easy peel) from the tongue.

(Effect of the Invention) According to the present invention, since the end of the aluminum foil lid that is sealed to the flange curl portion of the metal can ends before the maximum diameter of the curl portion and there is no caulking portion, Do not damage the fingers with aluminum foil when opening.

Even after the aluminum foil lid is peeled off from the metal can, the makeup lid is preliminarily fitted to the portion of the aluminum foil lid that does not have the caulking portion, so that the fitting ability of the makeup lid does not change and the resealability is good.

Further, from the mechanical suitability and the stability of the seal, even if the thickness of the aluminum foil lid material is increased, the aluminum foil lid does not have a caulked portion, so that the fitting property with the decorative lid is good.

Furthermore, even if a tongue portion for peeling is provided at the end of the aluminum foil lid exceeding the maximum diameter of the curl portion, the width of the tongue portion is only a part of the entire opening portion, so the above effect is not lost, The openability can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of the present invention, FIG. 2 is an explanatory view showing a sealing method, FIG. 3 (a) (b) is a sectional view and a plan view of an aluminum foil lid member, and FIG. 4 (a) (b). ) Is an explanatory view of a rib portion of the decorative lid, FIG. 5 is an explanatory view showing a state where an end portion of the aluminum foil lid is outwardly protruded when the decorative lid is applied, and FIG. 6 is an explanatory view of easy peel. (1) …… Can barrel (2) …… Flange curl part (3) …… Aluminum foil lid (4) …… End of aluminum foil lid (5) …… Maximum diameter part of flange curl portion (a)… … Crimped part of aluminum foil lid

Continuation of the front page (56) References JP-A-59-174447 (JP, A)

Claims (2)

[Scope of utility model registration request] 1. An end portion of an aluminum foil lid which is sealed by an outward flange curl portion of a metal can into which a decorative lid is fitted has an engraved portion so that the end portion ends in front of the maximum diameter of the curl portion. Aluminum foil seal can. 2. The aluminum foil seal can according to claim 1, wherein a peeling tongue portion is formed on an end portion of the aluminum foil lid.