JPS62122957A - Cap having unjust use preventive function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a cap equipped with an anti-tampering mechanism.

(Conventional technology) Conventionally, as a cap with a tamper evident mechanism.

It is known that one weakening part is provided on the F side (opposite side to the cap top plate part) of the screw part provided on the side wall of the cap.

When this cap is opened, the weakened portion breaks and separates from the side wall of the cap on the side of the first weakened portion r, making it clear that the cap has been opened once.

(Problems to be solved) However, in the conventional cap as described above,
Since the cap itself can be used again after being opened, whether or not the cap being used is virgin must be determined from the shape of the cap.

Technically speaking, most of the people who are requested to make such a determination are ten general consumers, so it is difficult to say that Dobe is the tamper evident mechanism.

Therefore, an object of the present invention is to provide a cap that cannot be reused once opened, and does not require general consumers to judge whether the cap is virgin or not. be.

(Means for Solving the Problems) The present invention provides a weakened portion above the threaded area of the cap sidewall so that when the cap is opened, the cap sidewall portion having the threaded area remains on the container mouth neck. , the part without the threaded area is configured to be detached from the container opening and neck.

Therefore, once the cap is opened, it cannot be reused.

(Operation of the Invention) That is, the present invention provides a weakened region that breaks when the cap is opened, a threaded region for engaging with a threaded portion provided on the container mouth neck, on the side wall of the cap that hangs down from the periphery of the top plate. and a retaining region for engaging with the jaw provided on the container mouth neck. 1. The weakened region is on the top plate side with respect to the threaded region, and the retaining region is on the top plate side with respect to the threaded region. It is placed on the opposite side.

Therefore, when the cap is opened, rupture occurs at the weakened part, so the side wall part of the cap having the threaded area on the side of the weakened part r remains at the container mouth neck, and only the upper part of the cap that does not have the threaded part remains at the container mouth neck. will be separated from.

It will be understood that since the upper part of the cap separated from the container neck has no threaded part at all, it is completely impossible to reuse it.

(Practice of the Invention 1 Mr. Mu) The present invention will be described in detail below based on specific examples shown in the accompanying drawings.

In FIG. 1 showing a partial side cross section of the cap according to the present invention,
The cap of the present invention consists of a top plate part 1 and a side wall part 2 hanging down from the periphery of the top plate part 1.

Further, on the inner surface side of the top plate portion 1, a liner 3 made of thermoplastic resin such as olefin resin is provided.

Such caps may themselves be made of tin, galvanized steel or electrochromed steel (tin-free steel).
Although it is preferable that the cap be made of a metal material such as a steel plate such as an aluminum plated steel plate or a light metal steel plate such as aluminum, it is of course possible to apply the present invention to a resin cap made of a synthetic resin such as polypropylene. It is.

In the cap of the present invention, a perforation or score 4, a threaded region 5, and an engagement region 6 are formed in the side wall portion 2 in this order from the top plate portion 1 side. Furthermore, a knurled groove 7 for gripping the cap is provided on the outer peripheral surface of the engagement area 6.

Referring to FIG. 2, which shows a state in which this cap is applied to the container neck, the cap is embossed while being covered with the container neck 10, and the threaded area 5 has a container neck. Department lO
A threaded portion 5a is formed which engages with the threaded portion 11 of the container, and the engagement region 6 engages with the jaw portion 12 of the container neck lO. Furthermore, the liner portion 3 sealingly engages the upper end 13 of the container neck lO, i.e., according to such a cap of the invention, the perforations 4
is located on the L side of the threaded portion 5a.

As shown in FIG. 3, when the package is opened, the upper part 20 of the perforation 4 is separated from the container neck 10 due to the breakage of the perforation 4, and the lower part 21 provided with the threaded part 5a is attached to the container neck lO. It will remain.

Therefore, since the upper portion 20 of the cap separated from the container neck 10 has no threaded portion at all,
It cannot be engaged with the container opening and neck again, and reuse is completely prevented.

In the cap of the present invention, the threaded portion 5a formed on the side wall portion 2 may be a right-handed thread or a left-handed thread as long as the threaded portion 5a formed on the side wall portion 2 is firmly engaged with the container jaw portion in its retaining region 6. However, it is generally preferable to have a so-called reverse screw structure so that the cap itself moves downward when opened. In such a case, the f-side portion 21 of the cap is securely This is because it remains in the container neck 10 and the perforations 4 are easily broken.

Furthermore, in the cap of the present invention, for example, an appropriate knob or the like is provided on the F side portion 21 of the cap including the threaded portion 5a, and by appropriately peeling off the lower portion 21, the container opening neck 1 can be removed.
The structure may also be such that the lower portion 21 of the cap remaining at 0g can be removed from the 0g portion IO.

In addition, an appropriate score is provided in the axial direction of the r-direction portion 21 of the cap, and an appropriate protrusion is formed on the lower portion of the threaded portion 11 of the container opening neck lO or slightly below the threaded portion 11, so that when the cap is opened, an appropriate protrusion is formed. It is also possible to have a structure in which the lower portion 21 is expanded outward by the protrusion and the score is broken.

In this case, when the cap is opened, the score is broken together with the perforation 4, and the lower portion 21 of the cap is also easily separated from the container opening WJ portion 10.

(Effects of the Invention) Since the cap of the present invention cannot be reused once it is opened, it is possible to completely prevent fraud such as mixing foreign matter into the contents of the container.

In addition, according to the cap of the present invention, the upper part 20 of the cap, which is separated from the container opening neck lO when the cap is opened, can be made into an extremely shallow shape 78, so that it can be used for 41 purposes as a so-called FJ award cap. The additional advantage of being able to do so is also achieved.

That is, in general, a prize cap has a predetermined mark printed on the inside of the top plate of the cap, and one nuclear mark is covered with a suitable resin layer, etc., and the cap is opened and then removed using a suitable knob etc. The coating layer is peeled off and marks etc. are observed. Therefore, when the opened cap itself has a deep bottom, it becomes difficult to peel off the coating layer, and when the cap is peeled off, the cut edges of the cap cause inconveniences such as injury to hands. .

In the case of the cap of the present invention, the upper part 20 of the cap separated by the breakage at the perforation 4 can be formed into an extremely shallow shape, so that it can be effectively used as a B-prize cap. You get it.

[Brief explanation of drawings]

FIG. 1 is a partial side sectional view of the cap of the present invention, FIG. 2 is a diagram showing the cap of the present invention in a used state, and FIG. 3 is a diagram showing the cap of the present invention in an unsealed state. l...Top plate part. 2...Side wall portion, 3...Liner, 4...Perforation or score, 5...
screw area. 6... Engagement area, 7... Knurled groove. 20...Lower part of the cap, 21...F side part of the cap. Figure 1 l Figure 2

Claims (2)

[Claims] (1) In a cap consisting of a top plate and a side wall hanging down from the periphery of the top plate, the side wall has a weakened area that ruptures when the cap is opened, and a threaded part provided on the container neck. a threaded region for engaging the container, and an engagement region for engaging with the jaw provided on the container neck, the weakened region being located on the top plate side with respect to the threaded region; A cap characterized in that the engagement region is located on the opposite side of the top plate portion with respect to the threaded region. (2) The cap according to claim 1, wherein a reverse thread is formed in the threaded region, and the cap moves downward when the cap is opened.