JPH0415653Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a tamper-evident mechanism for caps that can confirm that the cap has been opened based on the difference between the states before and after the cap is opened. This invention relates to a tamper-evident mechanism using a proof cap (hereinafter referred to as PP cap).

BACKGROUND TECHNOLOGY Various configurations of tamper-evident prevention mechanisms for caps have been known, but in general, mechanisms that determine whether or not the cap has been opened are determined based on a change in the state of the cap after it has been opened. It is. For example, in the case of PP caps, the main body and skirt portion (also known as PP band) are integrated through perforations before opening, but after opening, the perforations are broken and separated. It is determined whether the cap has been opened or not based on whether the main body and the skirt portion are integrated or not.

Therefore, if the bottle opening has been tampered with, this can be determined by visually checking the condition of the cap.

However, some people do not know the open status of this kind of cap, so even though the cap is in an open status such as the skirt part is missing, they assume that it is in an open status and install a cap that has already been tampered with. In some cases, a situation may occur in which the person drinks the beverage in the bottle.

In such a case, if the above-mentioned drink is contaminated with a poisonous substance, the person who drinks it may die or become poisoned.

Therefore, in consideration of the above-mentioned circumstances, an improved product has been proposed that clearly indicates that the lid is in an open state after opening, such as the one disclosed in Japanese Utility Model Publication No. 57-27741. In this publication, an annular sealing band made of a heat-shrinkable synthetic resin is shrink-fitted over the lower edge of the cap and a step formed on the outer periphery of the neck of the bottle to seal it, and then the sealing band is cut open. When the cap is opened, an appropriate mark is provided on the lower edge of the cap to indicate that the cap has been opened, although it is hidden by a tamper strip when the cap is closed.

Problems to be Solved by the Invention The above-mentioned conventional improvements not only require a separate sealing band in addition to the cap, but also require a process to attach this sealing band to cover the lower edge of the cap during capping. Because of this, manufacturing was complicated and there were problems in terms of cost. Further, when opening the seal, it is often difficult to cut open the sealing band made of heat-shrinkable synthetic resin, and there is a problem in that it is inconvenient to remove the sealing band.

The purpose of the present invention is to provide a tamper-evident mechanism for caps that is easy to manufacture and open, as well as visually confirming that the cap has been opened, in order to avoid the occurrence of the above-mentioned incidents. do.

Means for Solving the Problems A colored portion is provided on the inner circumferential surface of the skirt portion of the cap, which is separated after opening, by appropriate means such as coating or printing so that it can be easily peeled off. On the outer circumferential surface of the bottle opening facing the bottle, letters, symbols, etc. indicating that the bottle has been opened are engraved in a concave manner, such as letters such as "Sdenia Keraremashita" and "OPEN."

Function: When the bottle is unopened, the indentation provided at the bottle mouth to indicate that the bottle has been opened, which is covered by the skirt of the cap, is rubbed and peeled off when the bottle is opened. By adhering to the bottle, it will be exposed in a colored state after the bottle is opened, making it visually clear that the bottle has been opened. In addition, the opening operation can be easily performed in the same way as with ordinary PP caps.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 shows an unopened state in which the PP cap 2 is attached to the bottle opening 1, and the PP cap 2 is
It is a so-called roll-on cap, and after being placed on the bottle opening 1, it is rotated and pressed.
It is formed to match the thread 1a of the bottle opening 1 (see FIG. 1). A knurl 3 is provided at the upper end of the circumferential surface of the PP cap 2, and slits 4 and bridges 5 are alternately arranged on the same circumference at the boundary between the main body 2a and the skirt portion 2b connected to the lower part thereof. perforations 6 are formed. One of the bridges 5 is made longer than the others, and a split 7 is formed from one end of the slit 4 adjacent to the long bridge 5 toward the lower edge of the skirt portion 2b.

As is clear from FIG. 1, the skirt portion 2b
A colored portion 8 is provided on the inner circumferential surface of the coloring member 8, which is coated with a colorant so that it can be easily peeled off over the entire circumference. On the other hand, the skirt portion 2 of the bottle mouth 1
On the outer circumferential surface facing b, letters 9 (only a portion of which is shown) of "Sudenia Keraremashita" indicating that the bottle has been opened are engraved in a concave shape at appropriate intervals (see Figure 2). ).

Since the present embodiment is constructed as described above, when the cap 2 is rotated and opened, the colored portion 8 provided on the skirt portion 2b of the cap 2 is rubbed against the outer peripheral surface of the bottle mouth 1 and peeled off. The skirt part 2b is attached to the inside of each character 9 carved in a concave shape, while the skirt part 2b is attached to the main body 2a.
separated from Therefore, each colored letter 9 "Sudenia Keraremashita" is exposed, making it obvious at a glance that the bottle has been opened.

In addition, the indication of opened in this invention is not limited to the characters of "Sdenia Keraremashita",
In addition to using words such as "OPEN" and "Opened," it is also possible to use graphics or symbols that do not have a specific concept to draw the attention of consumers. Further, the colored portion 8 may be formed by applying a colorant or may be formed by printing. Furthermore, it goes without saying that the structure of the cap 2 is not limited to the roll-on cap as in the above embodiment.

Effects As explained above, according to the present invention, it can be confirmed at a glance that the cap has been opened, so it is extremely easy to determine whether the cap has been opened or not, and there is no possibility of misidentification. . In addition, by turning the main body of the cap in the direction of loosening the spiral like a general PP cap, it can be opened easily, which is a beneficial effect.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing the unopened state of the cap in the present invention, Fig. 2 is a side view showing the cap in the opened state, and Fig. 3 is the unopened state with the cap attached to the bottle opening. FIG. 1...Bottle opening, 2...Cap, 2a...Body, 2b...Skirt part, 8...Colored part, 9...
letter.

Claims (1)

[Scope of utility model registration request] Comprising a main body and a skirt section provided at the bottom of the main body,
In a cap mechanism for closing a bottle opening using a tamper-proof cap in which the skirt portion is separated from the main body after opening, a colored portion is provided on the inner peripheral surface of the skirt portion so as to be easily peeled off;
On the outer peripheral surface of the bottle mouth facing the skirt part,
A cap tamper prevention mechanism characterized by a concave engraved character or symbol indicating that the cap has been opened.