JP2007238100A - Gas-containing beverage container, and its filling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-containing beverage container having excellent deaeration preventive properties and capable of filling a content while not forming any space between the content and a cap, and its filling method. <P>SOLUTION: In the gas-containing beverage container consisting of a bottle and its cap 1, the cap 1 has a projecting part 1a to be fitted in an opening 2 of the bottle. The cap 1 is a bottomed cylindrical body with a top plate part 3 being recessed inwardly, and screwed to a screw 7 provided on an outer periphery of the bottle opening on a side wall 4, or a projecting part 11a is formed of a resin-made block mounted on an inner top plate surface of the metallic cap. When filling the gas-containing beverage into the container, the bottle is filled with the gas-containing beverage, and the cap having the projecting part to be fitted in the opening of the bottle is fitted to the opening to seal the bottle while discharging a part of the beverage. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a container for a gas-containing beverage comprising a bottle and a cap for storing the gas-containing beverage and a filling method for filling the container with the gas-containing beverage.

  Conventionally, containers for gas-containing beverages such as soft drinks containing carbon dioxide and drinking water containing a large amount of hydrogen include metal bottles such as aluminum and iron, glass bottles, and synthetic resin bottles such as polyethylene terephthalate. A cap made of metal or synthetic resin is used as a cap for sealing these openings. The cap includes a circular top plate and a cylindrical side wall depending from the outer peripheral edge thereof, and is screwed into a male screw formed in the opening of the container by a female screw formed on the side wall. The cap is formed of a plate having a horizontal top plate portion.

  A space is provided between the contents of the conventional bottle and the cap to prevent the contents from spilling when the cap is opened. This is because if the contents are fully filled up to the cap position, the contents may spill out when the cap is opened, contaminating clothes and the like, and even a lawsuit has been developed. However, when storing a gas-containing beverage, if there is a space in the bottle, the gas contained in the contents will be degassed from the contents into this space, so the amount of gas contained in the contents is reduced. End up. In order to eliminate this deaeration, it is preferable that there is no space between the contents and the cap.

  On the other hand, a conventional cap having a gas barrier property is generally made of a synthetic resin, and has a property of transmitting a low molecular gas such as carbon dioxide gas or oxygen gas, so that deterioration due to dissipation of the gas out of the container is prevented. In addition, there is a concern that oxygen or the like may permeate into the container from the outside and deteriorate the quality of the contents, so that there is a gas barrier property added to prevent this. In order to achieve this object, for example, in Patent Document 1 shown below, as shown in FIG. 5, a double structure in which a packing 54 for sealing a container opening 52 is provided in a shell 53 of a cap 55 of a container 51. In some cases, a diamond-like hard carbon film 56 is provided on either or both of the shell 53 and the packing 54 to improve the gas barrier property. Similarly, as disclosed in the following Patent Document 2, a cover made of at least one of amorphous carbon, amorphous silicon, or silicon oxide is provided on at least one of the inner surface side and the outer surface side of the synthetic resin cap. There was a thing. However, these were not changed by filling and sealing the contents by providing a space above the container.

JP 2002-179126 (Abstract, [0005], [0006], FIG. 1) JP 2001-322656 (Abstract, [0008] to [0011], FIG. 1)

  An object of this invention is to provide the container of the gas containing drink which has the outstanding deaeration prevention property, and its filling method in view of the above-mentioned situation.

  Another object of the present invention is to provide a container for a gas-containing beverage that can be filled with the contents so as not to create a space between the contents and the cap in the container for the gas-containing beverage, and a method for filling the container.

  In order to achieve the above object, a gas-containing beverage container according to claim 1 is a gas-containing beverage container comprising a bottle having an opening at the top and a cap covering the opening. A convex portion projecting into the opening is formed.

  The invention according to claim 2 is characterized in that, in the gas-containing beverage container according to claim 1, the convex portion is gradually reduced in diameter toward the opening.

  The invention according to claim 3 is the container for a gas-containing beverage according to claim 1 or 2, wherein the cap has a top plate slightly larger than the opening and a side wall that hangs a predetermined length from the outer peripheral edge of the top plate. The convex portion is formed by bending the top plate toward the inside of the cap.

  According to a fourth aspect of the present invention, in the gas-containing beverage container according to the first or second aspect, the cap has a top plate slightly larger than the opening and a side wall depending on a predetermined length from the outer peripheral edge of the top plate. The convex portion is formed of a resin block attached to a surface of the top plate located inside the cap.

  According to a fifth aspect of the present invention, in the gas-containing beverage container according to the first aspect, the cap has a female screw formed inside the side wall and a male screw formed outside the opening of the bottle. It is characterized by being fixed by being screwed onto.

  The invention according to claim 6 is the container for a gas-containing beverage according to any one of claims 1 to 5, wherein the cap is made of metal or synthetic resin.

  The invention according to claim 7 is characterized in that in the gas-containing beverage container according to any one of claims 1 to 6, a decorative cap that covers the cap is attached to the outside of the cap. To do.

The invention of the method for filling a container for a gas-containing beverage according to claim 8 is a gas comprising: a bottle provided with an opening in the upper part; and a cap provided with a convex part that covers the opening and projects inward toward the opening. It is a filling method of the container of a containing drink, Comprising: The process of the following (1)-(2) is included, It is characterized by the above-mentioned.
(1) filling the bottle with the gas-containing beverage up to the vicinity of the opening;
(2) A step of sealing the opening while allowing the gas-containing beverage in the bottle to overflow from the opening by gradually attaching the cap to the opening.

  By providing the above configuration, the present invention has the following excellent effects. That is, according to the first aspect of the present invention, in the gas-containing beverage container, since the cap has a protruding portion that protrudes into the opening of the bottle, the liquid in the container is discharged when the contents are filled and closed by this portion. However, since the bottle is closed, there is no space in the bottle, and when the cap is opened, a space is created from the bottle mouth to the liquid level by the amount of the discharged liquid, so that the contents can be prevented from spilling.

  According to the invention of claim 2, since the convex portion is gradually reduced in diameter toward the inside of the opening, the contents in the bottle pass between the convex portion and the inner wall of the opening when plugged to the outside. It will overflow smoothly.

  In addition, according to the invention of claim 3, since the top plate of the cap is recessed inward to form the convex portion, the contents in the bottle can be discharged at the recessed portion while having a simple structure.

  According to the invention of claim 4, since the convex portion is formed by the resin block attached to the top plate, it is not necessary to process the cap itself, and its manufacture is easy and inexpensive.

  Further, according to the invention of claim 5, since the screwing means that has been generally used as the means for fixing the bottle and the cap can be used, no special processing is required and the contents are gas. Although a contained beverage is used, it is also strong against internal pressure, so that it can be suitably used.

  According to the invention of claim 6, the cap is made of metal or synthetic resin, and can be easily formed.

  According to the seventh aspect of the present invention, a gas-containing beverage container having an excellent appearance can be provided by providing a decorative cap to be put on the outside of the cap.

  According to the invention of claim 8, in the filling method of the gas-containing beverage container, the bottle as the container for containing the gas-containing beverage is filled with the gas-containing beverage to the vicinity of the opening, and the convex portion formed in the cap is inserted into the opening of the bottle. However, by attaching the cap, it is possible to seal while discharging a part of the beverage, so that the gas-containing beverage can be provided in the intended storage state, so that deterioration of the contents can be prevented and opened. The contents do not spill when plugged.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies the structure of the cap of the container of the gas-containing beverage and the filling method into the container for embodying the technical idea of the present invention, and the present invention is specified to these. It is not intended, and other embodiments within the scope of the claims are equally applicable.

  1 is a cross-sectional view showing a bottle and a cap according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a bottle and a cap as a modification of the first embodiment.

  1 and 2 show a metal cap screwed into an opening of an aluminum bottle (bottle can). The cap 1 is a tamper-evident cap that is screwed into the opening 2 of the bottle, and includes a top plate portion 3, a cylindrical side wall portion 4 that hangs down from the periphery of the top plate portion 3, and a bridging portion 5. It consists of a skirt 6 connected to the side wall 4. The bridge portion 5 is composed of a plurality of thin bridges that are broken when the cap is opened, and connects the side wall portion 4 and the skirt portion 6.

  The side wall 4 is formed with a female screw 8 that is screwed into a male screw 7 formed on the outer peripheral surface of the opening 2 of the bottle. When the cap is not fixed to the bottle, the skirt 6 is formed to have a diameter slightly larger than that of the side wall 4. When the cap 1 is screwed into the opening 2 of the bottle, the cap is provided below the bottle opening. It is caulked for fixing to an annular step for fixing. In the present embodiment, since the content is a gas-containing beverage, it is preferable to use one that is screwed and fixed as described above, and it is better not to use a cap that is press-fitted and fixed in the opening.

  In the gas-containing beverage container comprising such a bottle and its cap 1, the present invention has a convex portion 1a into which the cap 1 is fitted into the opening 2 of the bottle. The cap 1 shown in the embodiment of FIGS. 1 and 2 has a convex portion 1a in which the top plate portion 3 is recessed inward and protrudes into the opening 2 of the bottle. The cap 1 in FIG. 1 is formed into a convex portion 1a by being bent into an inverted mountain shape by press molding of the top plate portion 3, etc., and the cap 1 in FIG. In this case, a female screw 8 is formed and screwed into a male screw 7 provided on the outer periphery of the bottle opening 2. A gap 2a is provided between the periphery of the convex portion 1a of the cap 1 and the inner wall surface of the bottle opening 2, and the convex portion 1a enters the opening when the cap 1 is attached to the bottle filled with the contents. By doing so, the contents are pushed out and discharged.

  When opening the bottle, when the cap 1 is rotated in the opening direction, the top plate portion 3 and the side wall portion 4 are moved upward by the female screw 8 being guided by the male screw 7. 6 is crimped to the annular step and cannot move. When further force is applied here, the bridging portion 5 is broken and the top plate portion 3 and the side wall portion 4 are separated from the skirt portion 6 so that the cap 1 can be removed from the bottle opening 2. Since the trace of the bridging portion 5 being broken is apparent from the skirt 6 remaining in the cap 1, the function of displaying the fact of opening is achieved.

  In view of the beauty of the container for the gas-containing beverage, as shown in FIGS. 1 and 2, a decoration cap 9 that covers the cap 1 may be provided outside the cap 1. Thus, by providing the decoration cap 9 outside the cap 1, it is possible to provide a container for a gas-containing beverage having high decorativeness and excellent appearance. Furthermore, the gas tightness can be enhanced by the double cap.

  3 is a cross-sectional view showing a bottle and a cap according to a second embodiment of the present invention, and FIG. 4 is a cross-sectional view showing a bottle and a cap as a modification of the second embodiment. In these examples, the cap 11 has a convex portion 11 a protruding toward the inside of the bottle opening 12 and is screwed into a male screw 17 provided on the outer periphery of the bottle opening 12 by a female screw 18 provided on the side wall 14. Is. The convex portion 11 a is formed by a synthetic resin block attached to the inner surface of the flat top plate portion 13 of the metal cap 11. The convex part 11a shown in FIG.3 and FIG.4 is formed in an inverted mountain shape. When closing the bottle filled with the contents by this part, the contents in the bottle can be discharged while being pushed out to seal the bottle, so there is no space in the bottle, and the cap When 11 is opened, a space is created from the bottle mouth to the liquid level by the content discharged at the time of closing, so that the contents can be prevented from spilling.

  According to Example 2, since the convex part 11a is formed by adhering the synthetic resin block to the inner surface of the metal top plate part 13, the gas barrier property is high and the cap can be easily processed at low cost. In addition, the convex part 11a provides the clearance gap 12a between the circumference | surroundings and the wall surface of the bottle opening 12, and the content pushed out by the convex part 11a when the convex part 11a penetrate | invades into the contents smoothly outside. This is so that it can be discharged.

  Also in this embodiment, in view of the beauty of the container for the gas-containing beverage, as shown in FIGS. 3 and 4, a decoration cap 19 that covers the cap 11 may be provided outside the cap 11. Thus, by providing the decoration cap 19 on the outer side of the cap 11, a container for a gas-containing beverage having high decorativeness and excellent appearance can be provided. Furthermore, the gas tightness can be enhanced by the double cap.

  Although not shown, the cap may not be made of metal but may be made of synthetic resin. The cap made of synthetic resin is made of polyester such as polyethylene, polypropylene, polyethylene terephthalate, polyethylene naphthalate, polystyrene, polycarbonate, polyarylate, polyacrylate, polyamide, or the like. However, since these synthetic resins have the property of permeating low-molecular gases such as carbon dioxide gas and oxygen gas, it is preferable to provide means for improving the gas barrier property.

  In the case where the cap is made of synthetic resin, it is easy to integrally mold and process by using injection molding or the like. The cap may have any shape shown in the above embodiment.

  In the above embodiment, the bottle is described as an example of a metal bottle. However, in a container for a gas-containing beverage, the bottle is not limited to metal, and may be made of glass or synthetic resin.

  Next, a method for filling a container with a gas-containing beverage using this cap will be described. Filling the bottle that forms the container containing the gas-containing beverage with the gas-containing beverage, the cap having a convex portion formed so as to protrude into the opening of the bottle on the inner surface is gradually screwed into the opening and attached, The convex part of the cap enters into the contents near the opening of the bottle, and a part of the overflowed beverage is attached and sealed while being discharged to the outside. As a result, there is no space between the cap and the contents, and the gas-containing beverage can be provided in the intended storage state, so that the contents can be prevented from being deteriorated and the contents are not spilled when opened.

  Although not shown in the above, it is preferable to put packing inside the cap and arrange it around the convex portion so as to be in close contact with the end face of the opening of the container because the sealing performance of the container can be further improved.

  Further, in the above embodiment, the description has been given using a molded product having a top plate and a side wall as a cap. It is also possible to seal it by attaching it to the opening of the bottle in a state where a recess or resin block is formed, and forming the portion protruding from the opening in plan view along the side wall of the opening by bending. When opening the container thus sealed, the container is opened by rotating along a male screw formed on the side wall surface of the opening, like the cap of the above-described embodiment.

  Regardless of the embodiment described above, the shape of the convex portion entering the bottle opening of the present invention can take a mountain shape, a cylindrical shape, a conical shape, and other various forms that exclude the contents.

FIG. 1 is a cross-sectional view showing a bottle and a cap according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing a bottle and a cap as a modification of the first embodiment. FIG. 3 is a cross-sectional view showing a bottle and a cap according to Embodiment 2 of the present invention. FIG. 4 is a cross-sectional view showing a bottle and a cap as a modification of the second embodiment. FIG. 5 is an explanatory view schematically showing a configuration of a conventional cap structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Cap 2,12 Bottle opening 3,13 Top plate part 4,14 Side wall part 5,15 Bridge part 6,16 Bottom part 7,17 Male screw 8,18 Female screw

Claims (8)

  A gas-containing beverage container comprising a bottle having an opening at the top and a cap covering the opening, wherein a convex portion protruding toward the opening is formed inside the cap. Container.   The container for a gas-containing beverage according to claim 1, wherein the convex portion is gradually reduced in diameter toward the opening.   The cap is composed of a top plate that is slightly larger than the opening and a side wall that hangs a predetermined length from the outer periphery of the top plate, and the convex portion is formed by bending the top plate toward the inside of the cap. A container for a gas-containing beverage according to claim 1 or 2.   The cap is composed of a top plate slightly larger than the opening and a side wall hanging from the outer peripheral edge of the top plate by a predetermined length, and the convex portion is made of a resin attached to a surface of the top plate located inside the cap. It consists of a block, The container of the gas containing drink of Claim 1 or 2 characterized by the above-mentioned.   The container for a gas-containing beverage according to claim 1, wherein the cap is fixed by screwing a female screw formed inside the side wall with a male screw formed outside the opening of the bottle. .   The container for a gas-containing beverage according to any one of claims 1 to 5, wherein the cap is made of metal or synthetic resin.   The container for a gas-containing beverage according to any one of claims 1 to 6, wherein a decoration cap for covering the cap is attached to the outside of the cap. A method of filling a container for a gas-containing beverage, comprising: a bottle having an opening at the top; and a cap having a convex portion that covers the opening and protrudes toward the inside on the inside, and includes the following (1) to ( A method for filling a container for a gas-containing beverage, comprising the step 2).
(1) filling the bottle with the gas-containing beverage up to the vicinity of the opening;
(2) A step of sealing the opening while allowing the gas-containing beverage in the bottle to overflow from the opening by gradually attaching the cap to the opening.

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