WO2019077767A1 - Bouchon en résine synthétique et récipient - Google Patents

Bouchon en résine synthétique et récipient Download PDF

Info

Publication number
WO2019077767A1
WO2019077767A1 PCT/JP2018/002661 JP2018002661W WO2019077767A1 WO 2019077767 A1 WO2019077767 A1 WO 2019077767A1 JP 2018002661 W JP2018002661 W JP 2018002661W WO 2019077767 A1 WO2019077767 A1 WO 2019077767A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap
synthetic resin
container
skirt wall
resin cap
Prior art date
Application number
PCT/JP2018/002661
Other languages
English (en)
Japanese (ja)
Inventor
伸生 川村
淳史 小野
慎吾 梅木
Original Assignee
日本山村硝子株式会社
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=66173241&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2019077767(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 日本山村硝子株式会社 filed Critical 日本山村硝子株式会社
Priority to JP2019519024A priority Critical patent/JP6539011B1/ja
Publication of WO2019077767A1 publication Critical patent/WO2019077767A1/fr

Links

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

Definitions

  • the present invention relates to, for example, a synthetic resin cap attached to the mouth of a container for containing contents such as beverages, and a container provided with the same.
  • the cap disclosed in Patent Document 1 has a cap main body 53 having a skirt wall (main portion) 52 provided with a female screw 51 screwed to the male screw M1 of the container mouth M;
  • a tamper evidence band (tamper evident foot) 55 connected to the lower part of the wall 52 via an annular weakening part (break line) 54 is provided.
  • the hook (locking means) 56 provided on the inner periphery of the tamper evidence band 55 along with the opening operation (first opening operation) from the state of being attached to the container opening M is the container opening M
  • the annular weakening portion 54 defining the tamper evidence band 55 and the skirt wall 52 is broken after being locked to the annular protrusion (locking jaw) M2 provided on the outer periphery of the cap, and the cap main body 53 and the tamper evidence band 55 Are separated from each other. Therefore, by visually recognizing the presence or absence of breakage of the bridge (bridge) formed between the perforation-like slits constituting the annular weakening portion 54, it can be easily confirmed whether or not the opening operation has been performed. it can.
  • the female screw 51 of the cap shown in FIG. 7 is an intermittent screw, and a plurality of unthreaded portions (notches) 57 are provided at intervals in the extending direction of the screw.
  • the thickness of the skirt wall 52 is not constant, and the portion corresponding to the non-threaded portion 57 is a thin portion 58 which is subjected to meat theft and smaller in thickness than the other portions.
  • This thin portion 58 is a skirt It extends in the axial direction of the wall 52.
  • the present inventors have found that in the cap having the thin portion 58 as described above, there is a possibility that a weld portion leading to a longitudinal crack of the tamper evidence band 55 may be formed when the cap is formed.
  • the present invention has been made in consideration of the above-mentioned matters, and an object thereof is to provide a synthetic resin cap and container capable of preventing the occurrence of a longitudinal crack of a tamper evidence band.
  • the synthetic resin cap according to the present invention has a skirt wall provided with an internal thread screwed on an external thread formed on the outer periphery of a container opening, and an annular weakening portion at the lower part of the skirt wall.
  • a cap provided with a tamper evidence band connected via a hook, and a hook that can be locked from below to an annular protrusion provided on the outer periphery of the container opening on the inner peripheral side of the tamper evidence band
  • a plurality of internal threads are provided at intervals in the direction, and the internal thread is an intermittent thread in which a thread and a non-threaded portion are alternately arranged, and each non-threaded portion extends circumferentially in the axial direction of the skirt wall. It is comprised so that the clearance gap provided between the said hooks adjacent in direction may not be located (Claim 1).
  • the synthetic resin cap may be configured such that the center of any one of the screw threads is located at the tip of each of the gaps extended in the axial direction of the tamper evidence band (claim 2).
  • the synthetic resin cap according to any one of claims 1 to 3 is attached to the mouth (claim 4).
  • the present vertical crack does not occur randomly in the tamper evidence band 55 as a result of the problem of the vertical crack of the thin portion 58. It is found that the lines tend to be concentrated on the extension line, and furthermore, the gap 59 (see FIG. 7) between the adjacent hooks 56 is prominently generated in the gap 59 when located on the extension line of the thin portion 58, As a result of earnest research, it was found that the formation mode of the weld portion in the tamper evidence band 55 greatly affects the longitudinal crack, and furthermore, the occurrence of the longitudinal crack can be prevented by changing the formation mode of the weld portion. I thought.
  • the position of the gap between each non-threaded portion and each hook is shifted in the circumferential direction, and with such a configuration, the weld portion connected to the vertical crack of the tamper evidence band The occurrence can be prevented.
  • the effect of preventing the generation of the longitudinal crack of the tamper evidence band can be greatly enhanced.
  • FIG. 3 is a cross-sectional view taken along the line AA of FIG.
  • FIG. 3 is a sectional end view taken along the line BB of FIG. 2; It is the C section enlarged view of FIG.
  • It is an expanded view which shows roughly the positional relationship of the screw thread in the said synthetic resin cap, a non-screw part, and a hook.
  • It is explanatory drawing (front view which shows a part in a cross section) which shows roughly the structure of the conventional synthetic resin cap.
  • a synthetic resin cap (hereinafter referred to as a cap) 1 shown in FIGS. 1 to 4 is used by being attached to an opening M of a container such as a plastic bottle, for example, and made of polyethylene by compression molding or injection molding. It is integrally molded.
  • the raw material which forms the cap 1 is not specifically limited, In addition to the polyethylene used by this embodiment, a polypropylene etc. are used suitably. In FIG. 1, the right half of the cap 1 is not shown.
  • the cap 1 has a top wall 2 (see FIG. 2) having a substantially circular shape in a plan view and a substantially cylindrical skirt wall 3 extending downward from an outer peripheral portion of the top wall 2 (see FIG. 3).
  • the knurled groove 4 is provided on the outer peripheral surface of the skirt wall 3 and the female screw 5 is provided on the inner peripheral surface, and the female screw 5 can be coupled to the male screw M1 formed on the outer periphery of the container opening M See Figure 1).
  • the outer foot 8 is configured to be in close contact with the annular upper end surface, and in close contact with the outer peripheral surface of the container opening M.
  • the middle foot 6 and the container opening M are overlapped in order to show the original shape of the middle foot 6 in an easy-to-understand manner. It deforms along the surface.
  • the cap 1 is a pill fur proof cap having a function of proving unopened (the fact that the opening has never been made), and at the time of opening the unopened cap 1 attached to the container opening M (first When the cap 1 is turned so that the connection between the male screw M1 and the female screw 5 is released at the time of opening the cap, the cap 1 is detached from the container opening M, but the tamper evidence connected to the lower part of the skirt wall 3 A band (hereinafter simply referred to as a "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 through the annular weakening portion 10 extending all around the skirt wall 3 (see FIGS. 1, 3 and 4). Consists of (perforated) slits intermittently extending in the circumferential direction of the skirt wall 3 and the band 9 so as to define the skirt wall 3 and the band 9 up and down, and a bridge existing between adjacent slits The bridge breaks when it is pulled by a predetermined force.
  • each hook 11 is substantially below an annular protrusion (bead portion) M2 (see FIG. 1) formed below the male screw M1 on the outer periphery of the container opening M in a state where the cap 1 is attached to the container opening M. It is located on the side 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 protrusion M2 from below.
  • the hook 11 protrudes above the hook 11 and the amount of projection is smaller than that of the hook 11 (the inner diameter is larger than the inner diameter of the hook 11)
  • a first fitting portion 12 is provided, and further, a first inclined portion 13 having a larger inner diameter toward the upper side is continued above the first fitting portion 12. Then, above the first inclined portion 13, the band 9 protrudes inside, and the amount of projection is smaller than that of the first fitting portion 12 (the inner diameter is larger than the inner diameter of the first fitting portion 12).
  • a mating portion 14 is provided, and a second inclined portion 15 having a larger inner diameter toward the upper side is continued above the second fitting portion 14.
  • the cap 1 of this example is in a sealed state for sealing the container by being attached to the container opening M (see FIG. 1), and from this sealed state, the cap 1 is opened (opened)
  • the cap 1 is raised relative to the container opening M, and eventually the hook 11 is engaged with the annular projection M2 from below.
  • the annular weakening portion 10 eventually breaks and the band 9 remains at the container opening M, while the cap body consisting of the upper wall 2 and the skirt wall 3 above it is a container It will be detached from the mouth M.
  • the female screw 5 of the skirt wall 3 in this example is an intermittent screw in which the thread 16 and the non-screw portion 17 are alternately arranged, and each non-screw portion 17 is an axis of the skirt wall 3
  • the gap 18 provided between the hooks 11 adjacent in the circumferential direction is not located at the end of the extension in the direction (downward in FIG. 3) (see FIGS. 5 and 6). In other words, the positions of the unthreaded portions 17 and the gaps 18 are shifted in the circumferential direction.
  • the female screw 5 extends so as to make two turns in the spiral in the skirt wall 3 and ten threads 16 are provided per one circumference. (See Figure 6). And, in this example, before each gap 18 is extended in the axial direction of the band 9, the center of any of the threads 16 (the center in the direction in which the screw extends) is positioned.
  • the longitudinal cracks of the cap having the thin portion 58 shown in FIG. 7 tend not to occur randomly in the tamper evidence band 55 but to concentrate particularly on the extension of the thin portion 58. Furthermore, when the gap 59 (see FIG. 7) between the adjacent hooks 56 is located on the extension of the thin portion 58, the gap 59 is prominent.
  • each unscrewed portion 17 is configured such that the gap 18 is not positioned at the end where it extends in the axial direction of the skirt wall 3. It is possible to prevent the generation of welds leading to cracking.
  • the present inventors circumferentially position the unthreaded portions 17 and the gaps 18 for the cap in which the longitudinal cracks occur in the band 9 at positions where the positions of the unthreaded portions 17 and the gaps 18 are not shifted in the circumferential direction. Tests have confirmed that no longitudinal cracks will occur if the direction is shifted.
  • the present invention is not limited to the above embodiment, and it is needless to say that the present invention can be modified in various ways without departing from the scope of the present invention. That is, in the present invention, as shown in FIG. 6, it is important to have a relationship in which the positions of the unthreaded portions 17 and the gaps 18 are offset in the circumferential direction of the skirt wall 3 or the band 9.
  • the configuration of the internal thread 5 including the unthreaded portion 17 and the configuration of the hook 11 defining the gap 18 can be changed as long as
  • the female screw 5 extends so as to make two spirals in the skirt wall 3, but the female screw 5 may be extended or shortened from this.
  • the other unthreaded portion 17 is necessarily present in the axial direction (upper or lower) of each unthreaded portion 17. It is preferable to leave.
  • five hooks 11 and ten screw threads 16 are provided per round, but the number of hooks 11 and screw threads 16 is not limited to this.
  • the number of screw threads 16 per round is not limited.
  • the number of hooks 11 may be larger than the number of threads 16 per round, and may not be an integral multiple or an integral multiple such as twice or three times the number of hooks 11 .
  • the thread 16 and the hook 11 are provided in the circumferential direction at equal intervals (the thread 16 is every 36 degrees, the hook 11 is every 72 degrees), it does not restrict to this.
  • the hooks 11 need not be equally spaced in the circumferential direction, for example, the circumferential length of the thread 16, the circumferential width of the non-threaded portion 17, the circumferential length of the hook 11, and the gap 18 May be uneven.
  • the centers of any of the screw threads 16 are positioned before the gaps 18 are extended in the axial direction of the band 9, but the present invention is not limited thereto.
  • the center or end of any thread 16 may be positioned before the axial extension of the band 9.
  • the skirt wall 3 of the present invention With a thin portion corresponding to the thin portion 58 shown in FIG. It may be provided, and even in this case, the effect of preventing the generation of the longitudinal crack of the band 9 can be expected.

Landscapes

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

Abstract

L'objet de la présente invention est de fournir un bouchon en résine synthétique et un récipient, permettant d'empêcher un fendillement longitudinal d'une bande d'inviolabilité. Le bouchon (1) comprend : une paroi de jupe (3) pourvue d'une vis femelle (5) qui se visse sur une vis mâle (M1) formée sur la périphérie externe d'une section goulot de contenant (M) ; et une bande d'inviolabilité (9) reliée à une section inférieure de la paroi de jupe (3) par l'intermédiaire d'une partie affaiblie annulaire (10). De multiples crochets (11) pouvant être verrouillés, depuis le dessous, à des saillies annulaires (M2) disposées sur la périphérie externe de la section de goulot de récipient (M) sont disposés sur le côté périphérique interne de la bande d'inviolabilité (9), des espaces étant ménagés entre ceux-ci dans une direction circonférentielle. La vis femelle (5) est une vis intermittente comprenant des filetages (16) agencés en alternance et des parties non filetées (17), et est conçue de sorte qu'aucun espace (18) ménagé entre des crochets (11) adjacents de manière circonférentielle ne soit positionné sur des extensions des parties non filetées (17) dans une direction axiale de la paroi de jupe (3).
PCT/JP2018/002661 2017-10-16 2018-01-29 Bouchon en résine synthétique et récipient WO2019077767A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019519024A JP6539011B1 (ja) 2017-10-16 2018-01-29 合成樹脂製キャップ及び容器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017200042 2017-10-16
JP2017-200042 2017-10-16

Publications (1)

Publication Number Publication Date
WO2019077767A1 true WO2019077767A1 (fr) 2019-04-25

Family

ID=66173241

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/002661 WO2019077767A1 (fr) 2017-10-16 2018-01-29 Bouchon en résine synthétique et récipient

Country Status (2)

Country Link
JP (1) JP6539011B1 (fr)
WO (1) WO2019077767A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7138815B1 (ja) * 2022-03-18 2022-09-16 日本山村硝子株式会社 キャップ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015093704A (ja) * 2013-11-12 2015-05-18 日本クロージャー株式会社 合成樹脂製容器蓋
JP2016016900A (ja) * 2014-07-10 2016-02-01 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
JP2017036081A (ja) * 2015-08-12 2017-02-16 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
JP6204621B1 (ja) * 2017-03-10 2017-09-27 日本山村硝子株式会社 合成樹脂製キャップ及び容器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015093704A (ja) * 2013-11-12 2015-05-18 日本クロージャー株式会社 合成樹脂製容器蓋
JP2016016900A (ja) * 2014-07-10 2016-02-01 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
JP2017036081A (ja) * 2015-08-12 2017-02-16 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
JP6204621B1 (ja) * 2017-03-10 2017-09-27 日本山村硝子株式会社 合成樹脂製キャップ及び容器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7138815B1 (ja) * 2022-03-18 2022-09-16 日本山村硝子株式会社 キャップ

Also Published As

Publication number Publication date
JP6539011B1 (ja) 2019-07-03
JPWO2019077767A1 (ja) 2019-11-14

Similar Documents

Publication Publication Date Title
JP6281029B1 (ja) 合成樹脂製キャップ及び容器
JP6204621B1 (ja) 合成樹脂製キャップ及び容器
JP6180687B1 (ja) 合成樹脂製キャップ及び容器
JP6534501B2 (ja) 合成樹脂製容器蓋
JP6539011B1 (ja) 合成樹脂製キャップ及び容器
JP7117981B2 (ja) 合成樹脂製キャップ
JP7117982B2 (ja) 合成樹脂製キャップ
WO2020179608A1 (fr) Capuchon
WO2018020532A1 (fr) Contenant
JP2017124837A (ja) 合成樹脂製キャップ
JP2017202862A (ja) 合成樹脂製容器蓋
JP6564141B2 (ja) 合成樹脂製キャップ
JP5918450B1 (ja) 合成樹脂製キャップ及び容器
JP5912247B2 (ja) 合成樹脂製容器蓋
JP7138815B1 (ja) キャップ
JP7005267B2 (ja) 合成樹脂製キャップ及び容器
WO2017043200A1 (fr) Capuchon de résine synthétique
JP5912260B2 (ja) 合成樹脂製容器蓋
JP6254427B2 (ja) 合成樹脂製容器蓋
JP7037915B2 (ja) 合成樹脂製キャップ及び容器
JP6306806B1 (ja) 合成樹脂製キャップ及び容器
WO2020039851A1 (fr) Capuchon en résine synthétique
JP2008239234A (ja) 合成樹脂製容器蓋
WO2019073794A1 (fr) Bouchon en résine synthétique et récipient
JP6128831B2 (ja) 合成樹脂製容器蓋

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2019519024

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18867555

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18867555

Country of ref document: EP

Kind code of ref document: A1