JPH0642702U - cap - Google Patents

Abstract

(57) [Abstract] [Purpose] The cap of the present invention has been improved to improve shock resistance and ensure that the bottle can be reliably sealed even when it is sold by a vending machine or during long-distance transportation. The purpose is to provide a cap. [Structure] The cap of the present invention has a circular top surface portion 11
And the skirt portion 1 hanging from the peripheral edge of the top surface portion 11.
2, and an opening knob 13 that hangs down from the skirt portion 12, and the skirt portion 12 is provided with a plurality of weakening lines 3 extending upward from the lower end thereof.
The inner periphery and the entire inner peripheral surface of the skirt portion 12 are covered with the packing material 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cap used for a relatively wide-mouthed bottle which has recently been used for beverages.

[0002]

[Prior art]

 Conventionally, this type of cap has a form disclosed in, for example, Japanese Utility Model Publication No. 57-41154 or Japanese Utility Model Publication No. 59-10061. As shown in FIG. 6, these conventional caps have a circular top surface portion 11, a skirt portion 12 that hangs from the peripheral edge of the top surface portion 11, and an opening knob 13 that hangs further from the skirt portion 12. A plurality of weakening lines 3 extending upward from the lower end of the skirt portion 12 are provided, and the packing material 2 covers the periphery of the inner surface of the top surface portion 11 and the upper half of the inner peripheral surface of the skirt portion 12. When the stopper 2 is plugged, as shown in FIG. 7, the packing material 2 is in close contact with the outer periphery of the top 20c of the bottle mouth 20.

[0003]

[Problems to be solved by the device]

 By the way, as shown in FIG. 7, the conventional cap described above has a problem that the packing material 2 does not come into close contact with the soot 20b of the bottle port 20 and the impact resistance is poor. Therefore, if it is used in a relatively wide-mouthed bottle that has been used for beverages in recent years, it is frequently shocked when it is sold by a vending machine or when it is transported by a car over a long distance, and the cap is not sealed. It was found that it could be damaged, causing leakage and alteration of the contents.

However, the inventor of the present invention has found that the conventional cap described above has a limit in improving the impact resistance while maintaining the easy-opening property. That is, in order to maintain the easy-opening property, a plurality of weakening lines for opening having long cut lengths are required, and conversely, in order to improve impact resistance, the weakening lines are reduced or the cutting lengths thereof are increased. It is necessary to reduce the length, and found that the performances conflict with each other.

The present invention has been made in view of the above facts, and its main purpose is to improve shock resistance and to reliably maintain the sealing of the bottle even during sales by a vending machine, long-distance transportation, or the like. To provide an improved cap that can be carried.

[0006]

[Means for Solving the Problems]

 Therefore, as a result of diligent experimental research, the present inventor has found that as a solution to the conflicting performance of the conventional cap, the shape of the sealing packing material is changed from the conventional shape such that the weakening line is partially covered. We made a big change, wrapping most of it in a thin cover.

That is, the cap according to the present invention has a circular top surface portion 11, a skirt portion 12 that hangs from the peripheral edge of the top surface portion 11, and an opening knob 13 that hangs further from the skirt portion 12. The portion 12 is provided with a plurality of weakening lines 3 extending upward from the lower end thereof, and further, the periphery of the inner surface of the top surface portion 11 and the entire inner peripheral surface of the skirt portion 12 are covered with the packing material 2. The thickness of the packing material 2 that covers the inner peripheral surface of the skirt portion 12 is preferably made thinner toward the lower end of the skirt portion 12.

[0008]

[Action]

 Since the cap according to the present invention is provided with the above-mentioned means, when the bottle is stoppered, the packing material 2 follows the shape of the bottle mouth 20 and comes into close contact with the soot 20b.

[0009]

【Example】

 Hereinafter, embodiments of the cap according to the present invention will be described in more detail with reference to the drawings. Referring to FIG. 1, the cap according to the present invention comprises a metal body 1 and a packing material 2. The metal main body 1 is formed of an appropriate metal plate such as an aluminum alloy plate or a tin plate, and has a circular top surface portion 11, a skirt portion 12 that hangs from the peripheral edge of the top surface portion 11, and the skirt portion. It has an opening knob 13 that hangs further from 12.

In the illustrated cap, a plurality of weakening lines 3 for easy opening are provided on the skirt portion 12 of the cap. The weakening line 3 generally extends upward from the lower end of the skirt portion 12 and ends on the way to the top surface portion 11. The number and length of the weakened lines 3 are appropriately determined depending on the balance between the sealing property and the unsealing property, but generally 4 to 6 and 3.5 to 4. It is 0 mm.

The packing material 2 is made of a known material having rubber elasticity. The packing material 2 is shaped so as to cover the entire inner peripheral surface of the top surface portion 11 and the inner peripheral surface of the skirt portion 12. Therefore, most of the weakening lines 3 are covered by the packing material 2 when the outside is viewed from the inside of the metal body 1. The thickness of the packing material 2 covering the inner peripheral surface of the skirt portion 12 is preferably made thinner toward the lower end of the skirt portion 12.

FIG. 2 shows the appearance of another embodiment of the cap according to the present invention. In this embodiment, the skirt portion 12 has a skirt-like shape extending toward the end portion thereof. This is to correct the inner diameter change due to the packing material 2 in the cap so that the bottle will have an appropriate shape when the bottle is plugged at high speed. Further, in this embodiment, in addition to the weakening line 3, an auxiliary weakening line 4 is provided in order to achieve easier opening. The length of the auxiliary weakening line 4 is set to 1 to 2 mm, and the auxiliary weakening line 4 is provided at a position corresponding to the soot 20b of the bottle mouth 20 when the cap is stoppered, that is, a position of 4a of FIG. 3 described later. . The number of the auxiliary weakening lines 4 is preferably 4 to 8. If the number is more than this, the winding tightening becomes weak, and when the internal pressure is applied to the cap at the time of impact, high temperature, etc., the cap is the winding tightening portion 20a of the bottle mouth 20a. It can no longer be held and will come off.

FIG. 3 shows a state in which the cap according to the present invention is wound around a bottle having a wide mouth. Since the packing material 2 is in close contact with the soot 20b along the shape of the bottle mouth 20, the sealing of the bottle mouth 20 is more complete, and the impact resistance can be improved. FIG. 4 shows a state in which the cap according to the present invention is capped into a bottle having a wide mouth, and then the opening knob 13 is pulled up in the arrow direction to open the cap. The packing material 2, which was a continuous body at the time of stoppering, is cut and divided as the weakening line 3 and the auxiliary weakening line 4 spread due to opening. In this case, since the thickness of the packing material 2 is made thinner toward the lower end of the skirt portion 12, the force that divides the packing material 2 does not impair the openability of the cap. It should be noted that such a packing material 2 is exposed to hot air while rotating the cap at a high speed in the process of gelling plastic applied to the inside of the metal body 1 by a known method by hot air, and then gelling to some extent. After that, it can be obtained by a known hot air drying method.

Next, the unsealing property and impact resistance test performed by the following method using the cap according to the present invention configured as above and the conventional cap as a comparative example will be described. The test results are shown in Table 1. (Test Method) 180 cc of sake was stored at 65 ° C. in a cup-shaped container having a diameter of 56 mm, and the caps according to the implementation products I and II and the comparison products I and II of the present invention were capped and the results are shown in FIG. As described above, the amount of liquid scattered when the top surface portion on the side opposite to the opening knob 13 with a drop of 50 cm is made to collide with the iron plate 14 having a 15 ° angle is measured. (Test results)

[0015]

[Table 1]

[0016]

[Effect of device]

 Since the cap according to the present invention is configured as described above, the shock resistance is improved, and the bottle can be reliably sealed even when it is sold by a vending machine or when it is transported over a long distance. it can. In addition, in the conventional cap, the weakened line portion is generally torn greatly when opened, and the finger is often injured at this portion.However, in the cap according to the present invention, the packing material is also applied to the torn portion of the weakened line portion. Has the secondary effect that injury can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a cap according to the present invention.

FIG. 2 is a side view showing another embodiment of the cap according to the present invention.

FIG. 3 is a cross-sectional view showing a state in which the bottle according to the present invention is in close contact with the tightening portion when the cap is stoppered.

FIG. 4 is an explanatory view showing a state in which the opening knob of the cap according to the present invention capped in a bottle having a wide mouth is pulled up to open the bottle.

FIG. 5 is an explanatory diagram showing an impact resistance test method.

FIG. 6 is a cross-sectional view showing a conventional cap.

FIG. 7 is a cross-sectional view showing a close contact state of a bottle with a winding tightening portion when a conventional cap is stoppered.

[Explanation of symbols]

 2 Packing material 3 Weakened wire 11 Top part 12 Skirt part 13 Opening knob

Claims (2)

[Scope of utility model registration request] 1. A circular top surface portion (11), a skirt portion (12) depending from a peripheral edge of the top surface portion (11), and an opening knob (13) further depending from the skirt portion (12). However, the skirt portion (12) is provided with a plurality of weakening lines (3) extending upward from the lower end thereof, and further, the packing material (2 ) Cap covered with. 2. The cap according to claim 1, wherein the packing material (2) covering the inner peripheral surface of the skirt portion (12) is made thinner toward the lower end of the skirt portion (12). .