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WO2019064450A1 - Cap for use with bottle having positive internal pressure, and bottle with cap attached thereto - Google Patents

Cap for use with bottle having positive internal pressure, and bottle with cap attached thereto Download PDF

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Publication number
WO2019064450A1
WO2019064450A1 PCT/JP2017/035289 JP2017035289W WO2019064450A1 WO 2019064450 A1 WO2019064450 A1 WO 2019064450A1 JP 2017035289 W JP2017035289 W JP 2017035289W WO 2019064450 A1 WO2019064450 A1 WO 2019064450A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap
bottle
side wall
peripheral surface
internal pressure
Prior art date
Application number
PCT/JP2017/035289
Other languages
French (fr)
Japanese (ja)
Inventor
高野力
小林俊也
Original Assignee
サントリーホールディングス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by サントリーホールディングス株式会社 filed Critical サントリーホールディングス株式会社
Priority to PCT/JP2017/035289 priority Critical patent/WO2019064450A1/en
Priority to CN201780044481.8A priority patent/CN111132908B/en
Priority to EP17926420.5A priority patent/EP3521195B1/en
Priority to JP2018566320A priority patent/JP6956749B2/en
Priority to ES17926420T priority patent/ES2902326T3/en
Publication of WO2019064450A1 publication Critical patent/WO2019064450A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
    • B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads

Definitions

  • the present invention relates to a cap used for a bottle in which the internal pressure is positive, and a bottle to which the cap is attached.
  • a cap 100 attached to a bottle such as JP-A-2015-9853 (PTL 1), is a female screw that is engaged with a male screw provided on the outer peripheral surface of the bottle opening.
  • a plurality of projections 102 are intermittently connected in the circumferential direction.
  • a bottle such as a bottle filled with a carbonated beverage and having a positive internal pressure
  • the top surface 103 of the cap 100 is pushed up as shown in FIG.
  • the side wall 104 may also be pushed upward by being dragged by the top surface 103. In such a state, the sealed state of the bottle opening by the cap is released, and there is a possibility that the contents may leak.
  • the side wall 104 is pushed upward because the cap side wall 104 is deformed so as to extend in the circumferential direction and expand outward, but the female screw portion 101 in which a plurality of protrusions 102 are intermittently connected in the circumferential direction is In the conventional cap 100 having such a configuration, the cap sidewall 104 can not be sufficiently suppressed from extending in the circumferential direction, and the leak of the contents can not be effectively suppressed.
  • the objective of this invention is providing the cap which can suppress the leak of the contents effectively.
  • the cap according to the present invention is A cap used for a bottle where the internal pressure is positive, It has a female screw to be engaged with a male screw provided on the outer peripheral surface of the bottle mouth,
  • the female screw portion includes a circumferential projection extending continuously at least 360 degrees and projecting from the inner circumferential surface of the cap side wall,
  • the circumferential protrusion is provided with at least one notch in which a part in the radial direction is cut.
  • the male screw portion is provided with the circumferential projecting portion that continuously extends in a spiral shape at 360 degrees, it is possible to effectively suppress the circumferential extension of the cap side wall, and the cap side wall is outward As a result, the cap side wall can be effectively suppressed from being pushed upward. Thereby, the leak of the contents can be effectively suppressed.
  • the circumferential projection is provided with a notch in which a part of the radial direction is cut out, the notch becomes an escape path for the gas, so that gas can be released at the time of opening, and it is opened safely. You can plug it.
  • a plurality of the notches be provided at predetermined intervals in the circumferential protrusion.
  • weight reduction can be achieved because of having a plurality of notches, and furthermore, since the cap is provided at a predetermined interval, the strength of the cap can be equalized, and deformation of the cap sidewall can be more effectively suppressed. .
  • the edge of the notch is formed in a smooth arc shape.
  • the edge of the notch is formed in a step-like shape, when attaching the cap to the bottle opening, the male screw and the notch of the bottle opening interfere with each other to attach the cap to the bottle
  • the edge of the notch portion is formed in a gentle arc shape, so that when the cap is attached to the bottle mouth portion, the male thread portion of the bottle mouth portion and the cut portion are cut. Interference between the notches and the other can be effectively suppressed, and the cap can be easily attached to the bottle smoothly.
  • an outer seal portion for sealing the outer peripheral surface of the bottle opening portion is provided, and a rib for connecting the outer seal portion and the inner peripheral surface of the cap side wall is provided between the outer seal portion and the inner peripheral surface of the cap side wall. It is suitable.
  • the deformation of the seal portion, the cap top surface, and the side wall can be effectively suppressed, and the leak of the contents can be effectively suppressed.
  • a cap for use in a bottle for carbonated beverages is preferred.
  • the cap according to the present invention can effectively suppress the leak of the contents due to the increase of the internal pressure, and therefore is effective for the bottle filled with the carbonated beverage in which the internal pressure tends to increase.
  • the cap of the present invention Even if the deformation rate is the same, the larger the diameter of the cap, the larger the amount of deformation, so there is a high risk of leakage of the contents due to the rise in internal pressure, and the outer diameter of the bottle opening is 25 mm or more According to the cap of the present invention, the leak of the contents can be effectively suppressed even if the diameter of the cap is increased.
  • the bottle according to the present invention is One of the above-mentioned caps according to the present invention is attached.
  • Embodiments of a cap and a bottle according to the present invention will be described with reference to the drawings.
  • the purpose of the cap 20 according to the present embodiment is to prevent the sealed state of the bottle opening 10 by the cap 20 from being released when the internal pressure of the bottle is increased, and to avoid the leak of the contents. It is used for a bottle whose internal pressure is positive pressure, in particular, a bottle for carbonated beverages in the present embodiment.
  • the cap 20 according to the present embodiment will be described.
  • the cap 20 which concerns on this embodiment is attached to the opening 10 of the bottle shown in FIG.
  • a male screw 11 is provided on the outer peripheral surface 10A of the bottle mouth 10.
  • the male screw portion 11 is a plurality of projecting portions 12 protruding in a radial direction from the outer peripheral surface 10A of the opening 10 intermittently and continuously connected in a spiral shape.
  • the reference numeral 13 is a passage for the gas that has escaped from the liquid in the bottle 1.
  • the outer diameter of the bottle opening 10 is 35 mm.
  • the outer diameter of the bottle opening 10 is not particularly limited, but is preferably 25 mm or more, and particularly preferably 28 mm or more. In general, the larger the diameter of the cap 10, the higher the risk of leakage of the contents due to the increase in internal pressure, and hence the cap 20 according to the present embodiment, which can effectively suppress the leakage of contents, is particularly effective. is there.
  • the bottle may be a bottle generally distributed in the market.
  • a thermoplastic resin such as polyethylene, polypropylene or polyethylene terephthalate is used as a main material and integrally molded by a stretching method such as biaxial stretch blow molding. be able to.
  • the capacity of the bottle is not particularly limited, and may be about 200 ml to 2 liters in general circulation.
  • the liquid to be filled in the bottle is a carbonated beverage in the present embodiment, but it is not particularly limited, and the internal pressure becomes positive after filling, or is filled in a state where the internal pressure becomes positive by sealing with nitrogen or the like.
  • drinking water, tea, fruit juice, coffee, cocoa, soft drinks, alcoholic beverages, milk drinks, beverages such as soups, and liquid seasonings such as sauces and soy sauce may be mentioned.
  • the cap 20 which concerns on this embodiment is provided with the internal thread part 21 engaged with the external thread part 11, as shown to FIG.
  • the female screw portion 21 is composed of a circumferential protrusion 22 continuously and helically extending at least 360 degrees (in this embodiment, 680 degrees) protruding from the inner circumferential surface 25A of the cap side wall 25. That is, although the male screw portion 11 of the bottle mouth portion 10 is formed by connecting the plurality of projecting portions 12 with the gap 13 between them, the female screw portion 21 has one circumferential projecting portion 22 of at least 360 rounds. It is possible to effectively suppress the leak of the contents.
  • the leak of the content occurs because the upper surface 24 of the cap 20 is pushed up by the increase of the internal pressure, and the cap side wall 25 may also be pushed upward in the form of being dragged by the upper surface.
  • the sealed state of the bottle opening 10 by the cap 20 is released, but since the male screw portion 21 is formed of the circumferential protrusion 22 continuously extending at least 360 degrees, the cap side wall It is possible to effectively suppress the circumferential expansion of the cap 25 and to prevent the cap sidewall 25 from expanding outward, and as a result, it is possible to effectively inhibit the cap sidewall 25 from being pushed upward.
  • At least one notch 23 in which a part in the radial direction is notched (that is, does not reach the inner circumferential surface 25A of the bottle side wall 25) is formed in the circumferential protrusion 22 It is provided. More specifically, a plurality of (in the present embodiment) are provided at predetermined intervals. Since the plurality of notches 23 are provided, weight reduction can be achieved, and furthermore, since the cap 20 is provided at a predetermined interval, the strength of the cap 20 is equalized, and deformation of the cap side wall 25 can be suppressed more effectively.
  • each notch 23 is arranged at a position corresponding to the position of the gap 13 of the male screw 11.
  • each notch 23 is formed in a gentle arc.
  • the depth of the notch 23 is not particularly limited as long as it does not reach the inner peripheral surface 25 A of the bottle side wall 25, but it is preferable that it is 20 to 80% of the protrusion height of the circumferential protrusion 22. If it is less than 20%, it is difficult to prevent the swelling of the cap side wall 25. If it exceeds 80%, it is difficult to secure a gas escape path, and it is also impossible to reduce the weight.
  • the inner seal portion 26 for sealing the tip of the inner peripheral surface of the mouth 10 and the tip of the outer peripheral surface 10A of the mouth 10
  • an outer seal portion 27 for sealing.
  • the mouth portion 10 is sealed by sandwiching the tip portion of the mouth portion 10 with the inner seal portion 26 and the outer seal portion 27.
  • ribs 28 and 29 connecting the both are circumferentially equal to each other.
  • a plurality of (14 in the present embodiment) are provided at intervals.
  • each rib 28 extends between the outer seal portion 27 and the inner circumferential surface 25A of the cap side wall 25 in a state of being inclined with respect to the radial direction
  • each rib 29 extends in the radial direction And extends between the inner seal portion 26 and the outer seal portion 27.
  • the rib 29 is located in the middle position in the circumferential direction between the adjacent ribs 28, and the rib 29 is located in the middle position in the circumferential direction between the adjacent ribs 29 so that the cap top surface is deformed. It is possible to effectively suppress the leak of the contents.
  • the configuration in which the female screw portion 21 includes one circumferential protrusion 22 has been described as an example.
  • embodiments of the present invention are not limited thereto.
  • at least one of the projecting portions is a circumferential projecting portion 22 continuous at 360 degrees or more. It may be.
  • the ribs 28 connect between the outer seal portion 27 and the inner circumferential surface 25A of the cap side wall 25 and between the inner seal portion 26 and the outer seal portion 27.
  • a configuration in which a plurality of 29 are provided at equal intervals has been described as an example.
  • the embodiment of the present invention is not limited to this, the number of ribs 28 and 29 can be changed as appropriate, and the ribs 28 and 29 may not be provided at equal intervals. In addition, both or one of the ribs 28 and 29 may not be provided.
  • the present invention can be used, for example, for bottle caps.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

The cap (20) is for use with a bottle having positive internal pressure and is provided with a female thread part (21) to be engaged with a male thread part disposed on the outer peripheral surface of a bottle mouth section. The female thread part (21) is provided with a peripheral protrusion (22) protruding from an inner peripheral surface (25A) of a cap sidewall (25) and helically extending continuously for at least 360 degrees, wherein the peripheral protrusion (22) has, at least at one position, a cutout part (23) where a portion thereof is cut out in the radial direction.

Description

内圧が陽圧となるボトルに用いるキャップ、及び、当該キャップを取り付けたボトルA cap used for a bottle in which the internal pressure is positive and a bottle attached with the cap
　本発明は、内圧が陽圧となるボトルに用いるキャップ、及び、当該キャップを取り付けたボトルに関する。 The present invention relates to a cap used for a bottle in which the internal pressure is positive, and a bottle to which the cap is attached.
　特開２０１５－９８５３号公報（特許文献１）など、一般に、ボトルに取り付けるキャップ１００は、図５に示すように、ボトル口部の外周面に設けられた雄ネジ部と係合させる雌ネジ部１０１を備えており、雌ネジ部１０１が、複数の突起部１０２が周方向に断続的に連なったものとなっている。 In general, as shown in FIG. 5, a cap 100 attached to a bottle, such as JP-A-2015-9853 (PTL 1), is a female screw that is engaged with a male screw provided on the outer peripheral surface of the bottle opening. A plurality of projections 102 are intermittently connected in the circumferential direction.
　例えば炭酸飲料を充填したボトルなど内圧が陽圧となるボトルでは、高温雰囲気化で保管されるなどによりボトルの内圧が高まると、図６に示すようにキャップ１００の天面１０３が押し上げられ、さらに天面１０３に引きずられる形で側壁１０４も上方に押し上げられる状態となることがある。このような状態になると、キャップによるボトル口部のシール状態が解除され、内容物のリークが起きる虞がある。 For example, in a bottle such as a bottle filled with a carbonated beverage and having a positive internal pressure, when the internal pressure of the bottle is increased by being stored in a high temperature atmosphere, the top surface 103 of the cap 100 is pushed up as shown in FIG. The side wall 104 may also be pushed upward by being dragged by the top surface 103. In such a state, the sealed state of the bottle opening by the cap is released, and there is a possibility that the contents may leak.
特開２０１５－９８５３号公報JP, 2015-9853, A
　側壁１０４が上方に押し上げられるのはキャップ側壁１０４が周方向に伸びて外方に膨らむ方向に変形するためであるが、複数の突起部１０２が周方向に断続的に連なった雌ネジ部１０１を有する従来のキャップ１００では、キャップ側壁１０４が周方向に伸びることを十分に抑制できず、内容物のリークを効果的に抑制できなかった。 The side wall 104 is pushed upward because the cap side wall 104 is deformed so as to extend in the circumferential direction and expand outward, but the female screw portion 101 in which a plurality of protrusions 102 are intermittently connected in the circumferential direction is In the conventional cap 100 having such a configuration, the cap sidewall 104 can not be sufficiently suppressed from extending in the circumferential direction, and the leak of the contents can not be effectively suppressed.
　そこで、本発明の目的は、内容物のリークを効果的に抑制できるキャップを提供することにある。 Then, the objective of this invention is providing the cap which can suppress the leak of the contents effectively.
　本発明に係るキャップは、
　内圧が陽圧となるボトルに用いるキャップであって、
　ボトル口部の外周面に設けられた雄ネジ部と係合させる雌ネジ部を備え、
　前記雌ネジ部は、キャップ側壁の内周面から突出する、少なくとも３６０度連続して螺旋状に延びる周突出部を備え、
　前記周突出部には、径方向の一部が切り欠かれた切欠き部が少なくとも一か所設けられている。 The cap according to the present invention is
A cap used for a bottle where the internal pressure is positive,
It has a female screw to be engaged with a male screw provided on the outer peripheral surface of the bottle mouth,
The female screw portion includes a circumferential projection extending continuously at least 360 degrees and projecting from the inner circumferential surface of the cap side wall,
The circumferential protrusion is provided with at least one notch in which a part in the radial direction is cut.
　この構成によれば、雄ネジ部が３６０度連続して螺旋状に延びる周突出部を備えるから、キャップ側壁が周方向に伸びることを効果的に抑制することができ、キャップ側壁が外方に膨らみにくくなり、その結果、キャップ側壁が上方に押し上げられることを効果的に抑制できる。これにより、内容物のリークを効果的に抑制できる。また、周突出部には径方向の一部が切り欠かれた切欠き部が設けられているため、切欠き部がガスの抜け道となって開栓時にガスを逃がすことができ、安全に開栓を行うことができる。 According to this configuration, since the male screw portion is provided with the circumferential projecting portion that continuously extends in a spiral shape at 360 degrees, it is possible to effectively suppress the circumferential extension of the cap side wall, and the cap side wall is outward As a result, the cap side wall can be effectively suppressed from being pushed upward. Thereby, the leak of the contents can be effectively suppressed. In addition, since the circumferential projection is provided with a notch in which a part of the radial direction is cut out, the notch becomes an escape path for the gas, so that gas can be released at the time of opening, and it is opened safely. You can plug it.
　１つの態様として、前記周突出部には、前記切欠き部が所定間隔で複数設けられていると好適である。 As one aspect, it is preferable that a plurality of the notches be provided at predetermined intervals in the circumferential protrusion.
　この構成によれば、複数の切欠き部を有するから軽量化も図ることができ、さらに、所定間隔で設けられるのでキャップの強度が均等化されて、一層効果的にキャップ側壁の変形を抑制できる。 According to this configuration, weight reduction can be achieved because of having a plurality of notches, and furthermore, since the cap is provided at a predetermined interval, the strength of the cap can be equalized, and deformation of the cap sidewall can be more effectively suppressed. .
　１つの態様として、前記切欠き部の縁が、なだらかな弧状で形成されていると好適である。 As one aspect, it is preferable that the edge of the notch is formed in a smooth arc shape.
　切欠き部の縁が段差状に形成されていると、キャップをボトル口部に取り付けるときに、ボトル口部の雄ネジ部と切欠き部とが互いに干渉して、ボトルへのキャップの取り付けが阻害されるおそれがあるが、この構成によれば、切欠き部の縁が、なだらかな弧状で形成されているため、キャップをボトル口部に取り付けるときに、ボトル口部の雄ネジ部と切欠き部とが互いに干渉することを効果的に抑制でき、ボトルへのキャップの取り付けを円滑に行い易い。 When the edge of the notch is formed in a step-like shape, when attaching the cap to the bottle opening, the male screw and the notch of the bottle opening interfere with each other to attach the cap to the bottle According to this configuration, the edge of the notch portion is formed in a gentle arc shape, so that when the cap is attached to the bottle mouth portion, the male thread portion of the bottle mouth portion and the cut portion are cut. Interference between the notches and the other can be effectively suppressed, and the cap can be easily attached to the bottle smoothly.
　１つの態様として、前記ボトル口部の外周面をシールするアウターシール部を備え、前記アウターシール部と前記キャップ側壁の内周面との間には、両者を接続するリブが設けられていると好適である。 According to one aspect, an outer seal portion for sealing the outer peripheral surface of the bottle opening portion is provided, and a rib for connecting the outer seal portion and the inner peripheral surface of the cap side wall is provided between the outer seal portion and the inner peripheral surface of the cap side wall. It is suitable.
　これらの構成によれば、シール部分やキャップ天面、側壁の変形を効果的に抑制でき、内容物のリークを効果的に抑制できる。 According to these configurations, the deformation of the seal portion, the cap top surface, and the side wall can be effectively suppressed, and the leak of the contents can be effectively suppressed.
　１つの態様として、炭酸飲料用のボトルに用いるキャップであると好適である。 In one aspect, a cap for use in a bottle for carbonated beverages is preferred.
　本発明に係るキャップは内圧の上昇による内容物のリークを効果的に抑制できるため、内圧が高まりやすい炭酸飲料を充填するボトルに対して有効である。 The cap according to the present invention can effectively suppress the leak of the contents due to the increase of the internal pressure, and therefore is effective for the bottle filled with the carbonated beverage in which the internal pressure tends to increase.
　１つの態様として、前記ボトル口部の外径が２５ｍｍ以上であるボトルに用いるキャップであると好適である。 It is suitable that it is a cap used for the bottle whose outer diameter of the said bottle mouth part is 25 mm or more as one aspect.
　変形率が同じであっても、キャップの径が大きいほど変形量は大きくなるため、内圧の上昇による内容物のリークの危険が高いところ、ボトル口部の外径が２５ｍｍ以上であることに伴いキャップの径が大きくなっても、本発明に係るキャップによれば内容物のリークを効果的に抑制できる。 Even if the deformation rate is the same, the larger the diameter of the cap, the larger the amount of deformation, so there is a high risk of leakage of the contents due to the rise in internal pressure, and the outer diameter of the bottle opening is 25 mm or more According to the cap of the present invention, the leak of the contents can be effectively suppressed even if the diameter of the cap is increased.
　本発明に係るボトルは、
　本発明に係る上記いずれかのキャップを取り付けたものである。 The bottle according to the present invention is
One of the above-mentioned caps according to the present invention is attached.
ボトル口部の正面図Front view of the bottle mouth キャップの一部断面正面図Partial cross-sectional front view of the cap 図２におけるIII－III断面図III-III sectional view in FIG. 2 図２におけるIV－IV断面図IV-IV sectional view in FIG. 2 従来のキャップを示す一部断面正面図Partial sectional front view showing a conventional cap ボトルの内圧が高まった状態を示す説明図Explanatory drawing which shows the state in which the internal pressure of the bottle rose
　本発明に係るキャップ及びボトルの実施形態について、図面を参照して説明する。本実施形態に係るキャップ２０は、ボトルの内圧が高まったときに、キャップ２０によるボトル口部１０のシール状態が解除されることを抑制し、内容物のリークを回避することを目的としており、内圧が陽圧となるボトル、特に本実施形態では炭酸飲料用のボトルに用いるものである。以下、本実施形態に係るキャップ２０について説明する。 Embodiments of a cap and a bottle according to the present invention will be described with reference to the drawings. The purpose of the cap 20 according to the present embodiment is to prevent the sealed state of the bottle opening 10 by the cap 20 from being released when the internal pressure of the bottle is increased, and to avoid the leak of the contents. It is used for a bottle whose internal pressure is positive pressure, in particular, a bottle for carbonated beverages in the present embodiment. Hereinafter, the cap 20 according to the present embodiment will be described.
　本実施形態に係るキャップ２０は、図１に示すボトルの口部１０に取り付けられる。ボトル口部１０の外周面１０Ａには雄ネジ部１１が設けられている。具体的には、雄ネジ部１１は、口部１０の外周面１０Ａから径方向に突出する複数の突出部１２が断続的に螺旋状に連なってなるものであり、各突出部１２間の隙間１３がボトル１内の液中から抜けたガスの抜け道となっている。また、本実施形態では、ボトル口部１０の外径は３５ｍｍとしてある。なお、ボトル口部１０の外径は特に限定されないが、２５ｍｍ以上であると好適であり、特に２８ｍｍ以上であると好適である。一般にキャップ１０の径が大きいほど内圧の上昇による内容物のリークの危険が高くなるものであるため、内容物のリークを効果的に抑制できる本実施形態に係るキャップ２０が特に有効になるためである。 The cap 20 which concerns on this embodiment is attached to the opening 10 of the bottle shown in FIG. A male screw 11 is provided on the outer peripheral surface 10A of the bottle mouth 10. Specifically, the male screw portion 11 is a plurality of projecting portions 12 protruding in a radial direction from the outer peripheral surface 10A of the opening 10 intermittently and continuously connected in a spiral shape. The reference numeral 13 is a passage for the gas that has escaped from the liquid in the bottle 1. Further, in the present embodiment, the outer diameter of the bottle opening 10 is 35 mm. The outer diameter of the bottle opening 10 is not particularly limited, but is preferably 25 mm or more, and particularly preferably 28 mm or more. In general, the larger the diameter of the cap 10, the higher the risk of leakage of the contents due to the increase in internal pressure, and hence the cap 20 according to the present embodiment, which can effectively suppress the leakage of contents, is particularly effective. is there.
　なお、ボトルは、一般に市場に流通するボトルであればよく、例えば、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート等の熱可塑性樹脂を主材料として、二軸延伸ブロー成型等の延伸成形法によって一体的に成型することができる。ボトルの容量は特に限定されず、一般的に流通している２００ミリリットル～２リットル程度とすることができる。また、ボトルに充填させる液体は本実施形態では炭酸飲料としているが特に限定されず、充填後に内圧が陽圧となるか、窒素等の封入により内圧が陽圧となる状態で充填されるものであれば、例えば、飲料水、茶、果汁、コーヒー、ココア、清涼飲料水、アルコール飲料、乳飲料、スープなどの飲料や、ソースや醤油などの液体調味料などが挙げられる。 The bottle may be a bottle generally distributed in the market. For example, a thermoplastic resin such as polyethylene, polypropylene or polyethylene terephthalate is used as a main material and integrally molded by a stretching method such as biaxial stretch blow molding. be able to. The capacity of the bottle is not particularly limited, and may be about 200 ml to 2 liters in general circulation. Further, the liquid to be filled in the bottle is a carbonated beverage in the present embodiment, but it is not particularly limited, and the internal pressure becomes positive after filling, or is filled in a state where the internal pressure becomes positive by sealing with nitrogen or the like. For example, drinking water, tea, fruit juice, coffee, cocoa, soft drinks, alcoholic beverages, milk drinks, beverages such as soups, and liquid seasonings such as sauces and soy sauce may be mentioned.
　本実施形態に係るキャップ２０は、図２，３に示すように、雄ネジ部１１と係合させる雌ネジ部２１を備える。雌ネジ部２１は、キャップ側壁２５の内周面２５Ａから突出する少なくとも３６０度（本実施形態では６８０度）連続して螺旋状に延びる周突出部２２からなる。つまり、ボトル口部１０の雄ネジ部１１は、複数の突出部１２が隙間１３を空けて連なったものとなっていたが、雌ネジ部２１は一つの周突出部２２が少なくとも一周分の３６０度連続しており、これにより内容物のリークを効果的に抑制できる。つまり、内容物のリークが起こるのは、内圧が高まることによりキャップ２０の天面２４が押し上げられ、さらに天面に引きずられる形でキャップ側壁２５も上方に押し上げられる状態となることがあり、このような状態になると、キャップ２０によるボトル口部１０のシール状態が解除されるからであるところ、雄ネジ部２１が少なくとも３６０度連続して螺旋状に延びる周突出部２２からなるため、キャップ側壁２５が周方向に伸びることを効果的に抑制することができ、キャップ側壁２５が外方に膨らみにくくなり、その結果、キャップ側壁２５が上方に押し上げられることを効果的に抑制できる。 The cap 20 which concerns on this embodiment is provided with the internal thread part 21 engaged with the external thread part 11, as shown to FIG. The female screw portion 21 is composed of a circumferential protrusion 22 continuously and helically extending at least 360 degrees (in this embodiment, 680 degrees) protruding from the inner circumferential surface 25A of the cap side wall 25. That is, although the male screw portion 11 of the bottle mouth portion 10 is formed by connecting the plurality of projecting portions 12 with the gap 13 between them, the female screw portion 21 has one circumferential projecting portion 22 of at least 360 rounds. It is possible to effectively suppress the leak of the contents. That is, the leak of the content occurs because the upper surface 24 of the cap 20 is pushed up by the increase of the internal pressure, and the cap side wall 25 may also be pushed upward in the form of being dragged by the upper surface. In such a state, the sealed state of the bottle opening 10 by the cap 20 is released, but since the male screw portion 21 is formed of the circumferential protrusion 22 continuously extending at least 360 degrees, the cap side wall It is possible to effectively suppress the circumferential expansion of the cap 25 and to prevent the cap sidewall 25 from expanding outward, and as a result, it is possible to effectively inhibit the cap sidewall 25 from being pushed upward.
　また、ガスの抜け道を作るため、周突出部２２には、径方向の一部が切り欠かれた（つまり、ボトル側壁２５の内周面２５Ａまで到達しない）切欠き部２３が少なくとも一か所設けられている。より詳しくは、所定間隔で複数（本実施形態では）設けられている。複数の切欠き部２３を有するから軽量化も図ることができ、さらに、所定間隔で設けられるのでキャップ２０の強度が均等化されて、一層効果的にキャップ側壁２５の変形を抑制できる。なお、ボトル口部１０にキャップ２０に取り付けたとき、各切欠き部２３は雄ネジ部１１の隙間１３の位置に対応する位置に配置されるようになっている。さらに、各切欠き部２３の縁２３ａはなだらかな弧状で形成されている。これにより、キャップ２０をボトル口部１０に取り付けるときに、ボトル口部１０の雄ネジ部１１と切欠き部２３とが互いに干渉することを効果的に抑制でき、ボトルへのキャップ２０の取り付けを円滑に行い易くなる。また、切欠き部２３の深さはボトル側壁２５の内周面２５Ａまで到達しないものであれば特に限定されないが、周突出部２２の突出高さの２０～８０％であると好ましい。２０％未満であればキャップ側壁２５の膨らみを防止しにくくなり、８０％を超えるとガスの抜け道を確保しがたく、また、軽量化も図れなくなるためである。 In addition, in order to make an escape path for gas, at least one notch 23 in which a part in the radial direction is notched (that is, does not reach the inner circumferential surface 25A of the bottle side wall 25) is formed in the circumferential protrusion 22 It is provided. More specifically, a plurality of (in the present embodiment) are provided at predetermined intervals. Since the plurality of notches 23 are provided, weight reduction can be achieved, and furthermore, since the cap 20 is provided at a predetermined interval, the strength of the cap 20 is equalized, and deformation of the cap side wall 25 can be suppressed more effectively. When attached to the cap 20 at the bottle opening 10, each notch 23 is arranged at a position corresponding to the position of the gap 13 of the male screw 11. Furthermore, the edge 23a of each notch 23 is formed in a gentle arc. Thereby, when attaching the cap 20 to the bottle opening 10, interference between the male screw 11 and the notch 23 of the bottle opening 10 can be effectively suppressed, and the attachment of the cap 20 to the bottle It becomes easy to do smoothly. The depth of the notch 23 is not particularly limited as long as it does not reach the inner peripheral surface 25 A of the bottle side wall 25, but it is preferable that it is 20 to 80% of the protrusion height of the circumferential protrusion 22. If it is less than 20%, it is difficult to prevent the swelling of the cap side wall 25. If it exceeds 80%, it is difficult to secure a gas escape path, and it is also impossible to reduce the weight.
　図２，４に示すように、キャップ２０の天面２４の内面２４Ａには、口部１０の内周面の先端部分をシールするインナーシール部２６と、口部１０の外周面１０Ａの先端部分をシールするアウターシール部２７とが設けられている。このインナーシール部２６とアウターシール部２７とで口部１０の先端部分を挟み込むことで口部１０がシールされる。そして、アウターシール部２７とキャップ側壁２５の内周面２５Ａとの間、及び、インナーシール部２６とアウターシール部２７との間には、それぞれ両者を接続するリブ２８，２９が周方向に等間隔で複数（本実施形態では１４個）設けられている。具体的には、各リブ２８は、径方向に対して傾く状態で、アウターシール部２７とキャップ側壁２５の内周面２５Ａとの間に延びており、各リブ２９は、径方向に沿う状態で、インナーシール部２６とアウターシール部２７との間に延びている。そして、本実施形態では、隣り合うリブ２８間の周方向における中間位置にリブ２９が位置し、且つ、隣り合うリブ２９間の周方向における中間位置にリブ２９が位置しキャップ天面の変形を効果的に抑制でき、内容物のリークを効果的に抑制できる。 As shown in FIGS. 2 and 4, on the inner surface 24A of the top surface 24 of the cap 20, the inner seal portion 26 for sealing the tip of the inner peripheral surface of the mouth 10 and the tip of the outer peripheral surface 10A of the mouth 10 And an outer seal portion 27 for sealing. The mouth portion 10 is sealed by sandwiching the tip portion of the mouth portion 10 with the inner seal portion 26 and the outer seal portion 27. Further, between the outer seal portion 27 and the inner circumferential surface 25A of the cap side wall 25 and between the inner seal portion 26 and the outer seal portion 27, ribs 28 and 29 connecting the both are circumferentially equal to each other. A plurality of (14 in the present embodiment) are provided at intervals. Specifically, each rib 28 extends between the outer seal portion 27 and the inner circumferential surface 25A of the cap side wall 25 in a state of being inclined with respect to the radial direction, and each rib 29 extends in the radial direction And extends between the inner seal portion 26 and the outer seal portion 27. And in this embodiment, the rib 29 is located in the middle position in the circumferential direction between the adjacent ribs 28, and the rib 29 is located in the middle position in the circumferential direction between the adjacent ribs 29 so that the cap top surface is deformed. It is possible to effectively suppress the leak of the contents.
〔その他の実施形態〕
　最後に、本発明に係るキャップ及びボトルのその他の実施形態について説明する。なお、以下のそれぞれの実施形態で開示される構成は、矛盾が生じない限り、他の実施形態で開示される構成と組み合わせて適用することも可能である。 Other Embodiments
Finally, other embodiments of the cap and the bottle according to the present invention will be described. The configurations disclosed in each of the following embodiments can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises.
（１）上記の実施形態では、雌ネジ部２１が一つの周突出部２２からなる構成を例に説明した。しかし、本発明の実施形態はこれに限定されない。例えば、雄ネジ部１１と同じように雌ネジ部２１を複数の突出部が隙間を空けて連なったものとしつつ、そのうち少なくとも一つの突出部を３６０度以上連続する周突出部２２としたものであってもよい。 (1) In the above embodiment, the configuration in which the female screw portion 21 includes one circumferential protrusion 22 has been described as an example. However, embodiments of the present invention are not limited thereto. For example, in the same manner as the male screw portion 11, while the plurality of projecting portions are continuous with a plurality of projecting portions being continuous, at least one of the projecting portions is a circumferential projecting portion 22 continuous at 360 degrees or more. It may be.
（２）上記の実施形態では、アウターシール部２７とキャップ側壁２５の内周面２５Ａとの間、及び、インナーシール部２６とアウターシール部２７との間に、それぞれ両者を接続するリブ２８，２９を等間隔に複数設けた構成を例として説明した。しかし、本発明の実施形態はこれに限定されず、リブ２８，２９の個数は適宜変更可能であり、また、リブ２８，２９は等間隔に設けなくてもよい。その他、リブ２８，２９の両者、又は一方を設けなくてもよい。 (2) In the above embodiment, the ribs 28 connect between the outer seal portion 27 and the inner circumferential surface 25A of the cap side wall 25 and between the inner seal portion 26 and the outer seal portion 27. A configuration in which a plurality of 29 are provided at equal intervals has been described as an example. However, the embodiment of the present invention is not limited to this, the number of ribs 28 and 29 can be changed as appropriate, and the ribs 28 and 29 may not be provided at equal intervals. In addition, both or one of the ribs 28 and 29 may not be provided.
（３）その他の構成に関しても、本明細書において開示された実施形態は全ての点で例示であって、本発明の範囲はそれらによって限定されることはないと理解されるべきである。当業者であれば、本発明の趣旨を逸脱しない範囲で、適宜改変が可能であることを容易に理解できるであろう。従って、本発明の趣旨を逸脱しない範囲で改変された別の実施形態も、当然、本発明の範囲に含まれる。 (3) With regard to the other configurations, it is to be understood that the embodiments disclosed herein are illustrative in all respects, and the scope of the present invention is not limited by them. Those skilled in the art will easily understand that appropriate modifications can be made without departing from the spirit of the present invention. Therefore, other embodiments modified within the scope of the present invention are naturally included in the scope of the present invention.
　本発明は、例えばボトルのキャップに利用することができる。 The present invention can be used, for example, for bottle caps.
１０　　ボトル口部
１０Ａ　外周面
１０Ｂ　内周面
１１　　雄ネジ部
２０　　キャップ
２１　　雌ネジ部
２２　　周突出部
２３　　切欠き部
２５　　キャップ側壁
２５Ａ　内周面
２６　　インナーシール部
２７　　アウターシール部
２８　　リブ DESCRIPTION OF REFERENCE NUMERALS 10 bottle mouth portion 10A outer circumferential surface 10B inner circumferential surface 11 male screw portion 20 cap 21 female screw portion 22 circumferential projection 23 notched portion 25 cap side wall 25A inner circumferential surface 26 inner seal portion 27 outer seal portion 28 rib

Claims (7)

  1. 　内圧が陽圧となるボトルに用いるキャップであって、
    　ボトル口部の外周面に設けられた雄ネジ部と係合させる雌ネジ部を備え、
    　前記雌ネジ部は、キャップ側壁の内周面から突出する、少なくとも３６０度連続して螺旋状に延びる周突出部を備え、
    　前記周突出部には、径方向の一部が切り欠かれた切欠き部が少なくとも一か所設けられているキャップ。     A cap used for a bottle where the internal pressure is positive,
    It has a female screw to be engaged with a male screw provided on the outer peripheral surface of the bottle mouth,
    The female screw portion includes a circumferential projection extending continuously at least 360 degrees and projecting from the inner circumferential surface of the cap side wall,
    The circumferential protrusion is provided with at least one notch in which a part of a radial direction is cut.
  2. 　前記周突出部には、前記切欠き部が所定間隔で複数設けられている請求項１に記載のキャップ。 The cap according to claim 1, wherein a plurality of the notches are provided at predetermined intervals in the circumferential protrusion.
  3. 　前記切欠き部の縁が、なだらかな弧状で形成されている請求項２に記載のキャップ。 The cap according to claim 2, wherein the edge of the notch is formed in a smooth arc shape.
  4. 　前記ボトル口部の外周面をシールするアウターシール部を備え、
    　前記アウターシール部と前記キャップ側壁の内周面との間には、両者を接続するリブが設けられている請求項１～３のいずれか１項に記載のキャップ。     It has an outer seal portion that seals the outer peripheral surface of the bottle mouth portion,
    The cap according to any one of claims 1 to 3, wherein a rib connecting the outer seal portion and the inner peripheral surface of the cap side wall is provided between the outer seal portion and the inner peripheral surface of the cap side wall.
  5. 　炭酸飲料用のボトルに用いるキャップである請求項１～４のいずれか１項に記載のキャップ。 The cap according to any one of claims 1 to 4, which is a cap used for a bottle for carbonated beverages.
  6. 　前記ボトル口部の外径が２５ｍｍ以上であるボトルに用いるキャップである請求項１～５のいずれか１項に記載のキャップ。 The cap according to any one of claims 1 to 5, which is a cap used for a bottle whose outer diameter is 25 mm or more.
  7. 　請求項１～６のいずれか一項に記載のキャップを取り付けたボトル。 A bottle equipped with the cap according to any one of claims 1 to 6.
PCT/JP2017/035289 2017-09-28 2017-09-28 Cap for use with bottle having positive internal pressure, and bottle with cap attached thereto WO2019064450A1 (en)

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PCT/JP2017/035289 WO2019064450A1 (en) 2017-09-28 2017-09-28 Cap for use with bottle having positive internal pressure, and bottle with cap attached thereto
CN201780044481.8A CN111132908B (en) 2017-09-28 2017-09-28 Bottle (Ref. TM. bottle)
EP17926420.5A EP3521195B1 (en) 2017-09-28 2017-09-28 Cap for use with bottle having positive internal pressure, and bottle with cap attached thereto
JP2018566320A JP6956749B2 (en) 2017-09-28 2017-09-28 Bottle with positive internal pressure
ES17926420T ES2902326T3 (en) 2017-09-28 2017-09-28 Cap for use with a bottle with positive internal pressure and a bottle with a cap attached to it

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JPWO2019064450A1 (en) 2020-09-10
EP3521195B1 (en) 2021-12-22
CN111132908A (en) 2020-05-08
EP3521195A1 (en) 2019-08-07
JP6956749B2 (en) 2021-11-02
EP3521195A4 (en) 2020-07-22
CN111132908B (en) 2022-07-05
ES2902326T3 (en) 2022-03-28

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