JP2003128096A - Cap and soda bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap capable of being removed from a bottle after drinking up a lemon pop, where the cap is not damaged when fixed to a bottle opening. SOLUTION: The cap of a lemon pop bottle comprises a cap body (2), a packing member (3) and a sealing ball (4). A screw (7) which engages with a screw on an outer periphery of the bottle opening is provided on an inner peripheral surface of the cap body (2). A radial weakening groove (6) is formed on the cap body (2). By virtue of this groove, the cap can be removed from the bottle by pushing down the sealing ball (4) taken in the packing member (3) to open the cap and by pushing and widening a bung hole (5) after drinking up a content liquid to break the cap body (2) from the weakening groove (6). Since the cap is fixed by screwing it into the bottle opening, the cap is not damaged by breaking the weakening groove of the cap body at the fixing to the bottle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap used for sealing a so-called Ramune bottle and a Ramune bottle equipped with the cap.

[0002]

2. Description of the Related Art Japanese Utility Model Publication Nos. 62-171441 and 62-1
71443, 62-171444, and actual open flat 1-476.
97, 2-8742, 2-16754, 3-97
No. 050, No. 4-118342, No. 5-51752, and the like, it has a roughly dome shape and has a ridge that engages with an annular ridge on the outer periphery of the bottle mouth portion on the inner peripheral surface and is poured at the center of the top. A cap main body having an outlet, and a sealed ball disposed inside the cap main body, having a substantially cylindrical shape, the outer periphery of which is in contact with the inner peripheral surface of the bottle mouth portion to maintain airtightness and which is wrapped in the inner peripheral portion. There is known a cap of a carbonated beverage bottle, which is composed of a packing member that maintains airtightness by the contact of the above and a sealed ball that is wrapped by the inner peripheral portion of the packing member.

In this type of cap, a cap body, a packing member and a sealing ball are assembled and integrated in advance,
It is a cap that plugs into the mouth of a bottle, and is known as a cap that can seal a Ramune bottle very easily. Usually, the cap body is made of a relatively hard material such as polypropylene so that it is firmly engaged with the bottle mouth, and the packing member is kept in contact with the inner surface of the bottle mouth and the outer surface of the sealing ball to keep airtightness. A relatively soft material such as polyethylene is used.

In recent years, it has been demanded that the cap can be easily removed from the bottle, the bottle and the cap can be easily separated and recycled, and the resources can be effectively used. For this reason, a weakening groove is provided in the cap body in the radial direction, and after drinking, by pushing the spout with a special device, the cap body can be destroyed from the weakening groove and removed from the bottle. Proposed (Japanese Patent Laid-Open No. 2001-146253).

[0005]

A conventional cap of this type is such that the cap is plugged into the bottle mouth at once by a capping machine, and a ridge formed inside the cap body and an annular protrusion on the outer periphery of the bottle mouth. The cap is attached to the mouth of the bottle by engaging with the strip. If the cap body is provided with a weakening groove in the radial direction, the diameter of the cap body is expanded when the cap is capped at the bottle mouth with a capping machine, and the weakening groove is broken by the impact of the capping cap. Was sometimes damaged and turned into a defective product. It is an object of the present invention to prevent the cap from being damaged when the cap is attached to the mouth of the bottle so that the cap can be easily removed from the bottle after drinking.

[0006]

According to the present invention, there is provided a cap body having a substantially dome shape, a screw thread engaging with a screw thread on an outer circumference of a bottle mouth portion on an inner peripheral surface, and a spout at a center of a top. It is arranged inside the cap body and has a roughly cylindrical shape, the outer peripheral surface contacts the inner peripheral surface of the bottle mouth to maintain airtightness, and the airtightness is achieved by contact with the sealed ball that is wrapped in the inner peripheral part. A cap of a carbonated beverage bottle consisting of a packing member for holding and a sealed ball wrapped in an inner peripheral portion of the packing member, wherein a weakening groove in a radial direction is formed in the cap body,
It is possible to remove the cap from the bottle by opening the stopper by pressing down the sealing ball and, after drinking the content liquid, by expanding the spout to break the cap body from the weakening groove and remove the cap from the bottle. A beverage bottle cap and a carbonated beverage bottle having the cap screwed into its mouth.

[0007] The cap of the present invention is not a cap that is plugged at once from the top with a capping machine, but is screwed into the mouth of the bottle. Therefore, when the cap is attached to the bottle, the weakening groove of the cap body is broken and the cap is removed. No damage. The cap is screwed tightly onto the bottle to prevent gas leaks, making it difficult to twist and remove the cap from the bottle,
You can easily remove the cap from the bottle by expanding the spout with a special tool and breaking the cap body from the weakening groove.

In order to prevent gas leakage due to loosening of the cap, a cap loosening prevention mechanism can be provided at the cap and the bottle mouth. Various known mechanisms can be adopted as the locking mechanism.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings showing embodiments. 1 is a top view of the cap 1 of the embodiment, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG.
FIG. 6 is an explanatory diagram of an example of a loosening prevention mechanism.

The cap 1 shown in the drawing is a cap body 2,
It is composed of a packing member 3 and a sealing ball 4. Cap body 2
Is made of polypropylene and has a generally dome-shaped overall shape. The inner peripheral surface has a screw thread 7 which is screwed into a screw thread 21 at the outer periphery of the mouth of the bottle 20, and the spout 5 is provided at the center of the top. The periphery of the spout 5 is a peripheral wall 8 formed downward from the top.
And a projection 9 for connecting the packing member 3 is formed at the lower end thereof. On the inner surface of the cap body 2, V-shaped weakening grooves 6 are arranged at equal intervals (1
Three at 20 ° intervals). The weakening groove may be provided on the outer surface of the cap body, or may be provided on both the inner surface and the outer surface.

The packing member 3 is made of polyethylene and has a substantially cylindrical shape, and its outer peripheral surface contacts the inner peripheral surface of the mouth of the bottle 20 to maintain airtightness. Flange 11 on the outer peripheral surface
Is formed, and its lower surface contacts the upper surface of the bottle mouth. A peripheral groove 12 is provided at the base end of the flange portion 11, whereby the outer peripheral surface is elastically pressed against the inner peripheral surface of the bottle mouth. A glass sealing ball 4 is wrapped around the inner circumference. Packing member 3
The inner peripheral portion and the outer surface of the sealed ball 4 are elastically contacted by the inner peripheral portion being pressed by the sealed ball and airtightness is maintained.
A protrusion 10 is formed inside the upper part of the packing member 3,
The packing member 3 is joined to the cap body 2 by engaging this with the projection 9 of the cap body.

The cap 1 is attached to the bottle by screwing it into the mouth of the bottle.
The diameter of the groove is forcibly expanded, there is no impact, and the weakening groove is not damaged. After drinking the content liquid, spread the spout with a special tool to break the cap body from the weakening groove and remove it. After that, the packing member 3 is pulled out from the bottle mouth portion and removed. If the packing member is removed, the sealed ball 4 can also be taken out from the bottle mouth part.
In this way, the bottle and the cap can be easily separated.

The cap and the bottle mouth of the present invention are provided with a locking mechanism to prevent the cap from loosening. In FIG. 3, a corrugation 31 is formed on the inner peripheral surface near the lower end of the cap 30, and a corrugation 41 is formed on the corresponding portion of the outer periphery of the mouth of the bottle 40. Waveforms 31 and 41
With the shape, the cap 30 can be rotated clockwise in the drawing to be tightened, but cannot be rotated counterclockwise which is the loosening direction.

[0014]

Since the cap of the present invention can be easily removed from the bottle by breaking the cap body, it is easy to separate the bottle and the cap for recycling and contribute to effective use of resources. To do.
Further, since the cap is not damaged when the cap is attached to the bottle, it is possible to prevent defective products from being generated.

[Brief description of drawings]

FIG. 1 is a top view of a cap 1 according to an embodiment.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an explanatory diagram of an example of a locking mechanism.

[Explanation of symbols]

1 cap 2 cap body 3 packing members 4 sealed ring 5 outlets 6 weakening groove 7 threads 8 surrounding walls 9 ridges 10 ridges 11 Flange 12 circumferential grooves 20 bottles 21 Thread 30 caps 31 Waveform 40 bottles 41 Waveform

Claims (3)

[Claims] 1. A cap body having a substantially dome shape, a screw thread (7) engaging with a screw thread (21) on the outer circumference of the bottle mouth portion, and a spout (5) at the center of the top. (2),
It is arranged inside the cap body (2) and has a substantially cylindrical shape,
A packing member (3) whose outer peripheral surface contacts the inner peripheral surface of the mouth of the bottle (20) to maintain airtightness, and which also maintains airtightness by contact with the sealing ring (4) wrapped in the inner peripheral portion. A cap for a carbonated beverage bottle comprising a sealing ball (4) wrapped in the inner peripheral portion of the packing member (3), wherein a radial weakening groove (6) is formed in the cap body (2). The cap body (2) is opened from the weakening groove (6) by expanding the spout (5) after opening the stopper by pushing down the sealing ring (4) and drinking the content liquid. Caps for carbonated beverage bottles, characterized by being able to break and remove the cap from the bottle 2. A carbonated beverage bottle characterized in that the cap according to claim 1 is screwed onto a mouth portion. 3. The carbonated beverage bottle according to claim 2, wherein a cap locking mechanism is provided at the cap and the bottle mouth portion.