JPH0430130Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a lid structure for a paper container having a flange at the opening.

<Conventional technology> This type of conventional cover structure was developed in 1972.
The techniques disclosed in Japanese Patent No. 123456, Japanese Patent No. 54-34633, etc. are known.

The former technique consists of a fastening ring with a welded cutout, and the winding part of the can and the winding part of the canopy. This technology allows the canopy to be removed by removing the fastening ring.

In the latter case, a part of the periphery of the aluminum foil cap is protruded to provide a knob, a cutting tape is attached to the back of the cap so as to pass through the knob, and the cap is lifted upward and torn. This technique involves opening a portion of the cap.

<Problem to be solved by the invention> However, in the former of the above-mentioned conventional techniques, a cutout portion formed separately from the fastening ring is welded to the fastening ring, resulting in a complicated structure. It was hot.

In addition, the former method has the problem of requiring time and effort since the cutout portion must be cut out with a tool such as pliers.

The latter type opens only a portion of the cap, and therefore has the problem that it is inconvenient to open the entire cap.

The cover structure according to the present invention is a completely new technique developed in view of these conventional problems.

<Means for solving the problem> The present invention is a completely new technology that fundamentally improves the problems of the conventional methods described above. In the cover structure, a side wall ring with two parallel perforation lines is brought into contact with the opening of the paper container, and the opening is covered with the outer peripheral edge of the top plate. The upper edge of the side wall ring is integrally rolled and tightened to form a wrap, and the lower edge of the side wall ring is curled to form a wrap that abuts the lower surface of the flange of the opening. .

<Function> As mentioned above, the cover structure of the present invention has a simple structure because it only has two parallel cutting perforations on the side wall ring, and since it is made of a paper cover, it is easy to draw the perforation lines. Without using tools etc. when tearing,
The ring can be easily cut by hand, which makes opening the package extremely easy.

Furthermore, once the package has been opened, it cannot be restored to its original state, so resealing can be reliably prevented.

<Example> An embodiment of the cover structure according to the present invention will be specifically described with reference to figures. FIG. 1 is a side sectional view of the cover structure, and FIG. 2 is a side sectional view of the main parts of the cover structure. , Figure 3 is a side view of the paper container and lid, Figure 4 is a side view of the paper container and lid.
The figure is an explanatory diagram of the side wall ring.

In FIGS. 1 to 4, 1 is a paper container having a flange 2 on the upper edge around the opening, and 4 is a top plate that can cover the opening of the container 1. It is configured to have a large diameter that can protrude outward from the flange 2 of the opening. Reference numeral 5 denotes a vertically wide side wall ring having an inner diameter approximately equal to the outer diameter of the flange 2 at the opening of the container 1, and a part of the ring is provided with two vertically parallel cutting perforations 6. At the same time, a cutout portion 7 is bored in the lower part between the cutout perforation lines 6.

Next, in constructing the lid of the container of the present application, the upper edge of the flange 2 of the opening of the container 1 is covered with the top plate 4, and then the upper edge of the side wall ring 5 formed in a band shape is covered with the top plate. 4, the two are integrally curled and tightened to form a wrap a, and the approximately central part of this side wall ring 5 is attached to the flange 2 of the container 1.
Then, the lower edge of the side wall ring 5 is curled inward to form a winding b, which is strongly brought into contact with the lower outer surface of the flange 2, thereby forming the whole structure. .

The cutout portion 7 of the side wall ring 5 in the above embodiment can be omitted.

In the present invention, the upper edge of the side wall ring 5 is integrally curled with the outer edge of the top plate 4 and tightened to form a roll a, and the lower edge of the side wall ring 5 is curled and tightened. Since the roll b is formed and the roll b is strongly abutted against the outer surface of the lower part of the flange 2, the top plate 4 can be firmly and stably fixed to the opening of the paper container 1. .

Therefore, in order to remove the top plate 4 from the opening of the paper container 1 and unseal it, the side wall ring 5 must be cut along the perforation line 6, thereby improving the sealability of the opening. I can guarantee it.

<Effects of the invention> Since the cover structure according to the invention has the above-mentioned configuration and function, it can be easily opened by tearing off the perforation line and cutting only the side wall ring. It can be opened at

Therefore, once the package is opened, it cannot be returned to its original state, thereby making it possible to prevent tampering and maintain the safety of the contents.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of the cover structure, Figure 2 is a side sectional view of the main parts of the cover structure, Figure 3 is a side view of the paper container and cover, and Figure 4 is an explanatory diagram of the side wall ring. It is. 1 is a container, 2 is a flange, 4 is a top plate, 5 is a side wall ring, 6 is a cutout perforation line, 7 is a notch part,
a and b are entanglements.

Claims (1)

[Scope of utility model registration request] In a cover lid structure in which a cover lid is attached to a paper container having a flange at the opening, a side wall ring having two parallel perforation lines perforated therein is brought into contact with the opening of the paper container. , and integrally winding the outer peripheral edge of the top plate covered with the opening and the upper edge of the side wall ring to form a wrap-around;
A lid structure for a container, characterized in that a curl formed by curling the lower edge of the side wall ring is in contact with the lower surface of the flange of the opening.