WO2020039851A1 - 合成樹脂製キャップ - Google Patents
合成樹脂製キャップ Download PDFInfo
- Publication number
- WO2020039851A1 WO2020039851A1 PCT/JP2019/029581 JP2019029581W WO2020039851A1 WO 2020039851 A1 WO2020039851 A1 WO 2020039851A1 JP 2019029581 W JP2019029581 W JP 2019029581W WO 2020039851 A1 WO2020039851 A1 WO 2020039851A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- annular
- side wall
- cap
- synthetic resin
- groove
- Prior art date
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 14
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000003313 weakening effect Effects 0.000 claims description 10
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
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
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
-
- 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
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/40—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
- B65D41/405—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts with integral internal sealing means
Definitions
- the present invention relates to a synthetic resin cap to be attached to a mouth of a container for storing contents such as beverages.
- a cap disclosed in Patent Document 1 has a cap body 53 having a skirt wall 52 provided with a female screw 51 screwed into a male screw M1 of a container mouth M. And a tamper evidence band 55 connected to a lower portion of the skirt wall 52 via an annular weakening portion 54.
- an engaging portion (hook) 56 provided on the inner periphery of the tamper evidence band 55 is attached to the container opening M in accordance with an opening operation (first opening operation) from a state of being attached to the container opening M.
- an annular projection (engaged portion) M2 provided on the outer periphery of the tamper-evidence band 55 and the skirt wall 52 After engaging with an annular projection (engaged portion) M2 provided on the outer periphery of the tamper-evidence band 55 and the skirt wall 52, the annular weakened portion 54 defining the skirt wall 52 is broken, and the cap body 53, the tamper-evidence band 55, Are separated from each other. Therefore, by visually checking whether or not a bridge (bridge) formed between the perforated slits constituting the annular weakened portion 54 has been broken, it can be easily confirmed whether or not the opening operation has been performed. it can.
- the engaging portion 56 does not engage with the annular projection M2 of the container mouth M at the time of the opening operation, and the cap is detached from the container mouth M without breaking the annular weakening portion 54 so-called a so-called tail.
- a so-called tail In order to prevent the detachment from occurring, it is necessary to secure a certain amount of protrusion of the engaging portion 56.
- the present invention has been made in consideration of the above-mentioned matters, and an object thereof is to enhance a function of preventing the annular weakened portion from being broken at the time of attachment to a container mouth, and further reduce the amount of resin used. It is another object of the present invention to provide a cap made of synthetic resin.
- the synthetic resin cap according to the present invention has a substantially cylindrical side wall, and the side wall is provided with a female screw that is screwed into a male screw formed on the outer periphery of the container mouth.
- a skirt wall, and a tamper evidence band connected to a lower portion of the skirt wall via an annular weakening portion and provided with an engaging portion that engages with an engaged portion formed on the outer periphery of the container opening.
- a groove that is continuous or intermittent in the circumferential direction of the side wall is provided in a region between the annular weakened portion and the lowermost position of the female screw portion on the inner peripheral surface of the side wall (claim 1).
- annular projecting portion is provided on the outer peripheral surface of the side wall above the annular weakened portion and away from a lowermost position of the female screw portion, and the groove is formed in the annular projecting portion. It may extend above the portion (claim 2).
- a synthetic resin cap capable of enhancing the function of preventing the annular weakened portion from being broken at the time of attachment to the container mouth and further reducing the amount of resin used can be obtained.
- the portion of the side wall above the annular weakened portion is thinned and easily deformed (expanded in diameter), and the container is closed when the cap is attached to the container opening. Since at least a part of the force applied from the mouth to the annular weakened portion is converted into the deformation, the function of preventing the annular weakened portion from being broken is enhanced, and the amount of resin used can be reduced as the side wall is thinned. Becomes
- the thinner portion easily deforms to a position above the annular protrusion on the side wall. Is formed without fail, and the above-described breaking prevention function is surely enhanced.
- FIG. 2A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 2B is an enlarged view of a portion B in FIG.
- FIG. 2 is a sectional view taken along line CC in FIG. 1.
- 1A is a front view showing a conventional synthetic resin cap
- FIG. 1B is a front view showing a state where the cap is attached to a container opening.
- a synthetic resin cap (hereinafter referred to as a cap) 1 shown in FIGS. 1 and 2 (A) has a container opening M having a male screw M1 and an annular projection (engaged portion) M2 as shown in FIG. 4 (B).
- a mouth of a container such as a PET bottle
- the material for forming the cap 1 is not particularly limited.
- polypropylene or the like is preferably used.
- the cap 1 has a top wall 2 having a substantially circular shape in plan view, and a substantially cylindrical skirt wall 3 extending downward from an outer peripheral portion of the top wall 2 (see FIG. 2A).
- a knurl groove 4 is provided on the outer peripheral surface of the skirt wall 3 and a female screw 5 is provided on the inner peripheral surface.
- the female screw 5 can be connected to a male screw M1 formed on the outer circumference of the container mouth M.
- annular ring provided on the inner surface (lower surface) of the top wall 2 is formed.
- the middle foot (inner ring) 6, the annular rib 7, and the annular outer foot (outer ring) 8 are in close contact with the container opening M, whereby the container opening M is in a sealed state. That is, when the cap 1 is attached to the container mouth M, the middle foot 6 is inserted into the container mouth M and closely adheres to the inner peripheral surface of the container mouth M, and the annular rib 7 is attached to the container mouth M.
- the outer foot 8 is configured to be in close contact with the outer peripheral surface of the container mouth portion M while being in close contact with the annular upper end surface.
- the cap 1 is a pill fur proof cap having a function to prove that the cap 1 has not been opened (the cap has never been opened).
- the cap 1 is rotated so that the connection between the male screw M1 and the female screw 5 is released at the time of opening, the cap 1 is detached from the container mouth M, but the tamper evidence connected to the lower part of the skirt wall 3 is obtained.
- the band (hereinafter, simply referred to as “band”) 9 is configured to remain at the container opening M.
- the band 9 is connected to the lower portion of the skirt wall 3 via an annular weakening portion 10 extending over the entire circumference of the skirt wall 3 (see FIG. 2A).
- a perforated slit extending intermittently in the circumferential direction of the skirt wall 3 and the band 9 so as to define the upper and lower bands 9 vertically, and a bridge existing between adjacent slits. Breaks when pulled with a predetermined force.
- the outer diameter of the band 9 is made uniform over the upper and lower sides, while the band 9 is configured to protrude inward on the inner peripheral side, and the amount of inward protrusion increases toward the upper side.
- Five hooks (an example of the engaging portion) 11 are provided at intervals in the circumferential direction (an example of a plurality of hooks).
- Each hook 11 is positioned substantially below the annular projection M2 (see FIG. 4) formed below the male screw M1 on the outer periphery of the container mouth M when the cap 1 is attached to the container mouth M. , And is locked to the annular projection M2 by the opening operation. That is, the hook 11 is configured to be able to be locked to the annular projection M2 from below.
- the two-dot chain line in FIG. 3 shows a cross-sectional shape of a portion where the hook 11 is not provided.
- a fitting portion 12 is provided, and further above the fitting portion 12, an inclined portion 13 whose inner diameter becomes larger toward the upper side is connected.
- the annular projection M2 is positioned inside or above the inclined portion 13, and when the cap 1 is rotated in the opening direction from this state, the container mouth M is opened.
- the cap 1 is relatively raised with respect to M, the fitting portion 12 is fitted into the annular projection M2, and the hook 11 is locked to the annular projection M2 from below.
- the annular weakened portion 10 is eventually broken, and the band 9 remains in the container opening M, while the cap body composed of the top wall 2 and the skirt wall 3 above the container is a container. It will be detached from the mouth M.
- the inclined portion 13 abuts on the annular projection M2, thereby preventing the band 9 from being lifted obliquely and the annular weakening portion. Since 10 fractures substantially uniformly without unevenness, the tamper-evidence becomes good.
- the fitting portion 12 is provided not only on the portion located above each hook 11 but on the entire circumference of the band 9. . Thereby, the pressure applied to the band 9 at the time of removal from the mold or the like is further dispersed, so that prevention of whitening and cracking of the band 9 can be achieved.
- a substantially cylindrical side wall 14 including the skirt wall 3 and the band 9 in order to enhance the function of preventing the annular weakened portion 10 from breaking when the cap 1 is attached to the container opening M, a substantially cylindrical side wall 14 including the skirt wall 3 and the band 9 (see FIG. In the area between the annular weakened portion 10 and the lowermost position of the female screw 5 on the inner peripheral surface of (A)), a groove 15 which is continuous in the circumferential direction of the side wall 14 is provided, and the side wall 14 is deformed (expanded). Made it easier.
- the groove 15 is tapered so as to be deeper from the upper end to the lower end. Further, in the present example, the outer circumferential surface of the side wall 14 is located above the annular weakened portion 10 and away from the lowermost position of the female screw 5 (in the illustrated example, the lowermost position of the female screw 5 is closer to the annular weakened portion 10). (A close position) is provided with a thick annular protrusion 16, the groove 15 extends above the annular protrusion 16, and the lower end of the groove 15 is continuous with the inclined portion 13 below the annular weakened portion 10. are doing.
- the portion of the side wall 14 above the annular weakened portion 10 (the portion from the lower part of the skirt wall 3 to the upper part of the band 9 in this example) becomes thinner and deformed (diameter expansion). ), And at least a part of the force applied to the annular weakening portion 10 from the container mouth portion M when the cap 1 is attached to the container mouth portion M is converted into the deformation.
- the amount of resin used can be reduced as the thickness of the side wall 14 is reduced.
- the groove 15 extends above the thick annular protrusion 16, a thin portion which is easily deformed at the portion of the side wall 14 above the annular protrusion 16 is inevitable. Since it is formed, the above-described breaking prevention function is surely enhanced. From the viewpoint of obtaining such an effect more reliably, it is preferable that the upper end of the groove 15 is closer to the lowermost position of the female screw 5 than the annular weakened portion 10, and in this case, the side wall 14 ( Since the band 9) is expanded in diameter, the annular weakened portion 10 can be hardly broken. On the other hand, the lower end of the groove 15 does not need to extend below the annular weakened portion 10, but may extend to, for example, the height position of the lower end of the annular protrusion 16.
- the groove 15 has a tapered shape that becomes deeper toward the lower side.
- the shape of the groove 15 is not limited to this.
- the depth of the groove 15 may be changed regularly or irregularly vertically.
- the groove 15 is continuous in the circumferential direction of the side wall, but is not limited thereto, and the groove 15 may be interrupted in the circumferential direction of the side wall 14.
- the configuration such as the number and the width of the grooves 15 can be variously set within a range in which the side wall 14 can be easily deformed (expanded in diameter) and the function of preventing the annular weakened portion 10 from breaking can be enhanced.
- a plurality of grooves 15 may be provided in the vertical direction.
- the plurality of grooves 15 are arranged in a matrix or a staggered shape along the circumferential direction of the inner circumferential surface of the side wall 14. May be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
2 天壁
3 スカート壁
4 ローレット溝
5 雌ねじ
6 中足
7 環状リブ
8 外足
9 タンパーエビデンスバンド
10 環状弱化部
11 フック
12 嵌合部
13 傾斜部
14 側壁
15 溝
16 環状突出部
51 雌ねじ
52 スカート壁
53 キャップ本体
54 環状弱化部
55 タンパーエビデンスバンド
56 係合部
M 容器口部
M1 雄ねじ
M2 環状突起(被係合部)
Claims (2)
- 略筒状の側壁を有し、
該側壁は、容器口部の外周に形成された雄ねじに螺合する雌ねじが設けられたスカート壁と、該スカート壁の下部に環状弱化部を介して連結され、前記容器口部の外周に形成された被係合部に係合する係合部が設けられたタンパーエビデンスバンドとを含み、
前記側壁の内周面における前記環状弱化部から前記雌ねじ部の最下位置までの間の領域に、該側壁の周方向に連続又は断続する溝が設けられたことを特徴とする合成樹脂製キャップ。 - 前記側壁の外周面において前記環状弱化部よりも上方であって前記雌ねじ部の最下位置から下方に離れた位置に環状突出部が設けられ、前記溝は前記環状突出部よりも上方にまで延びている請求項1に記載の合成樹脂製キャップ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020538258A JP7348902B2 (ja) | 2018-08-20 | 2019-07-29 | 合成樹脂製キャップ |
CN201980052770.1A CN112566852B (zh) | 2018-08-20 | 2019-07-29 | 合成树脂制端盖 |
KR1020217004188A KR102567410B1 (ko) | 2018-08-20 | 2019-07-29 | 합성수지제 캡 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018-153899 | 2018-08-20 | ||
JP2018153899 | 2018-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020039851A1 true WO2020039851A1 (ja) | 2020-02-27 |
Family
ID=69592763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/029581 WO2020039851A1 (ja) | 2018-08-20 | 2019-07-29 | 合成樹脂製キャップ |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP7348902B2 (ja) |
KR (1) | KR102567410B1 (ja) |
CN (1) | CN112566852B (ja) |
WO (1) | WO2020039851A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4369889A (en) * | 1981-06-08 | 1983-01-25 | Ethyl Products Company | Tamperproof closure |
JPH04100541U (ja) * | 1991-02-04 | 1992-08-31 | ||
US5950850A (en) * | 1996-05-14 | 1999-09-14 | Shibazaki Seisakusho, Ltd. | Sealing device and container |
JP2009057106A (ja) * | 2007-09-03 | 2009-03-19 | Kirin Brewery Co Ltd | プラスチックキャップ、それを装着した容器及びその装着方法 |
JP2013203440A (ja) * | 2012-03-28 | 2013-10-07 | Nippon Closures Co Ltd | 合成樹脂製容器蓋 |
WO2017029707A1 (ja) * | 2015-08-18 | 2017-02-23 | 日本山村硝子株式会社 | 合成樹脂製キャップ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5918450B2 (ja) * | 1981-04-16 | 1984-04-27 | 新日本製鐵株式会社 | 焼結鉱の製造方法 |
JPH04100451U (ja) * | 1991-02-02 | 1992-08-31 | ||
JP3500191B2 (ja) * | 1994-08-02 | 2004-02-23 | 日本クラウンコルク株式会社 | ボトルの密封構造 |
JP2003200951A (ja) | 2001-10-31 | 2003-07-15 | Masao Horiie | 容器のキャップ |
CN1830730A (zh) * | 2005-01-01 | 2006-09-13 | 郭永军 | 铰接式防盗瓶盖 |
JP5063406B2 (ja) * | 2007-03-22 | 2012-10-31 | 東洋製罐株式会社 | Icタグ付プラスチックキャップ |
JP5977937B2 (ja) * | 2011-11-21 | 2016-08-24 | 株式会社Csiジャパン | 炭酸飲料充てん容器用合成樹脂製キャップ、閉止装置、および飲料入り閉止装置 |
JP5291175B2 (ja) | 2011-12-16 | 2013-09-18 | 日本クロージャー株式会社 | 合成樹脂製容器蓋及びこれと容器との組み合わせ |
JP6373099B2 (ja) | 2014-07-10 | 2018-08-15 | 日本クロージャー株式会社 | 合成樹脂製容器蓋及びこれと容器との組み合わせ |
JP2016064866A (ja) | 2014-09-26 | 2016-04-28 | 株式会社Csiジャパン | 合成樹脂製キャップ、閉止装置、および飲料入り閉止装置 |
-
2019
- 2019-07-29 CN CN201980052770.1A patent/CN112566852B/zh active Active
- 2019-07-29 KR KR1020217004188A patent/KR102567410B1/ko active Active
- 2019-07-29 WO PCT/JP2019/029581 patent/WO2020039851A1/ja active Application Filing
- 2019-07-29 JP JP2020538258A patent/JP7348902B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4369889A (en) * | 1981-06-08 | 1983-01-25 | Ethyl Products Company | Tamperproof closure |
JPH04100541U (ja) * | 1991-02-04 | 1992-08-31 | ||
US5950850A (en) * | 1996-05-14 | 1999-09-14 | Shibazaki Seisakusho, Ltd. | Sealing device and container |
JP2009057106A (ja) * | 2007-09-03 | 2009-03-19 | Kirin Brewery Co Ltd | プラスチックキャップ、それを装着した容器及びその装着方法 |
JP2013203440A (ja) * | 2012-03-28 | 2013-10-07 | Nippon Closures Co Ltd | 合成樹脂製容器蓋 |
WO2017029707A1 (ja) * | 2015-08-18 | 2017-02-23 | 日本山村硝子株式会社 | 合成樹脂製キャップ |
Also Published As
Publication number | Publication date |
---|---|
CN112566852A (zh) | 2021-03-26 |
KR102567410B1 (ko) | 2023-08-14 |
KR20210030439A (ko) | 2021-03-17 |
CN112566852B (zh) | 2023-01-03 |
JP7348902B2 (ja) | 2023-09-21 |
JPWO2020039851A1 (ja) | 2021-08-10 |
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