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WO2019073794A1 - Bouchon en résine synthétique et récipient - Google Patents

Bouchon en résine synthétique et récipient Download PDF

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Publication number
WO2019073794A1
WO2019073794A1 PCT/JP2018/035551 JP2018035551W WO2019073794A1 WO 2019073794 A1 WO2019073794 A1 WO 2019073794A1 JP 2018035551 W JP2018035551 W JP 2018035551W WO 2019073794 A1 WO2019073794 A1 WO 2019073794A1
Authority
WO
WIPO (PCT)
Prior art keywords
protrusion
locking pieces
locking
circumferential direction
annular
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/035551
Other languages
English (en)
Japanese (ja)
Inventor
靖文 黒岩
伸生 川村
淳史 小野
慎吾 梅木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Yamamura Glass Co Ltd
Original Assignee
Nihon Yamamura Glass Co Ltd
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 Nihon Yamamura Glass Co Ltd filed Critical Nihon Yamamura Glass Co Ltd
Priority to JP2019548105A priority Critical patent/JPWO2019073794A1/ja
Publication of WO2019073794A1 publication Critical patent/WO2019073794A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B65D41/32—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.
  • FIGS. 5A and 5B An example of such a conventional cap is shown in FIGS. 5A and 5B (see Patent Document 1).
  • This cap has a cap body 55 having a skirt wall 54 provided with an internal thread 53 screwed to the external thread 52 of the container opening M, and a tamper evidence band connected to the lower portion of the skirt wall 54 via an annular weakening portion 56 And 57.
  • a plurality of locking pieces 59 that can be locked from below to the annular projection 58 provided on the outer periphery of the container opening M are provided at intervals in the circumferential direction.
  • the tip of the piece 59 is provided with a protrusion 60 positioned on the outer peripheral side of the annular protrusion 58 when the cap is attached to the container opening M.
  • Patent No. 6061357 gazette
  • the present invention has been made with the above matters in mind, and the purpose thereof is to widen the locking margin of the locking piece against the annular projection while preventing the locking piece from being reversed, and thus to ensure the opening of the plug. It is an object of the present invention to provide a synthetic resin cap and container which can break the annular weakening portion.
  • 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 having a tamper evidence band connected thereto, the locking piece being engageable from below with an annular protrusion provided on the outer periphery of the container opening on the inner peripheral side of the tamper evidence band Are provided at intervals in the circumferential direction, and a plurality of protrusions projecting from the tip of the locking piece are provided at intervals in the circumferential direction, and are formed between the adjacent protrusions in the circumferential direction.
  • the central angle in a plan view of the projection non-existence area is configured to be 30 ° or more (claim 1).
  • a protrusion is provided on a part of the locking pieces, and the number of the locking pieces having the protrusions is one more than the number of the locking pieces not having the protrusions. It may be more or less than the same number (claim 2).
  • an even number of the locking pieces may be provided, and the locking pieces having the protruding portions and the locking pieces not having the protruding portions may be alternately arranged in the circumferential direction ( Claim 3).
  • the synthetic resin cap according to any one of claims 1 to 3 is attached to the mouth (claim 4).
  • a synthetic resin cap and container capable of widening the locking margin of the locking piece with respect to the annular projection while preventing the locking piece from being reversed and consequently breaking the annular weakened portion reliably in opening the plug. Is obtained.
  • the synthetic resin cap of the invention by disposing the plurality of projecting portions in a dispersed manner, a plurality of regions in which the projecting portions do not exist can be widely secured.
  • the locking margin (the locking area) of the locking piece with respect to the annular projection can be effectively expanded, and in the state where the cap is attached to the container opening, The locking piece is prevented from moving over the annular projection, and thus the opening can be reliably prevented from being completed without breakage of the annular weakening portion.
  • FIG. 1 It is a perspective view showing roughly composition of a synthetic resin cap concerning a 1 embodiment of the present invention. It is a longitudinal cross-sectional view which shows roughly the structure of the container based on one embodiment of this invention with which the said synthetic resin cap was mounted
  • (A) is an explanatory view schematically showing the positional relationship between the locking piece and the protruding portion of the synthetic resin cap
  • (B) to (H) are the positional relationship between the locking piece and the protruding portion according to the modification.
  • Is an explanatory view schematically showing (A) and (B) are explanatory drawing and the principal part enlarged longitudinal cross-sectional view which show roughly the structure of the conventional synthetic resin-made caps.
  • a synthetic resin cap (hereinafter referred to as a cap) 1 shown in FIGS. 1 to 3 is used by being attached to an opening M (see FIG. 2) of a container such as a plastic bottle, for example. By molding, it is integrally molded with polyethylene.
  • 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.
  • the cap 1 has a top wall 2 that is substantially circular in a plan view, and a substantially cylindrical skirt wall 3 that extends downward from the outer peripheral portion of the top wall 2.
  • a knurled groove 4 is provided on the outer peripheral surface of the skirt wall 3 and an internal thread 5 is provided on the inner peripheral surface, and the internal thread 5 can be coupled to an external thread M1 formed on the outer periphery of the container opening.
  • 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 clearly show the original shape of the middle foot 6, the outer diameter of the middle foot 6 is smaller in the actual wearing state. As a result, it is deformed (diameter-reduced) to contact the inner peripheral surface of the container opening M.
  • 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 and 2). And a slit that extends intermittently along the circumferential direction of the skirt wall 3 and the band 9 so as to vertically define the belt 9 and the band 9, and a bridge that exists between adjacent slits, Is broken when pulled by a predetermined force.
  • each locking piece 11 is positioned substantially below the annular protrusion (bead portion) M2 formed on the outer periphery of the container opening M below the male screw M1 in a state where the cap 1 is attached to the container opening M. And is locked to the annular projection M2 by an opening operation (see FIG. 2).
  • the locking piece 11 is configured to be able to be locked to the annular protrusion M2 from below, and the skirt wall 3 and the top wall 2 above the annular weakening portion 10 detach from the container opening M at the time of opening.
  • the band 9 below the annular weakening portion 10 remains at the container opening M, and the annular weakening portion 10 is broken accordingly.
  • the band 9 is integrally formed with the skirt wall 3 and the top wall 2, and the locking piece 11 provided on the band 9 protrudes downward when the cap 1 is formed.
  • the annular projection M2 is pushed up and turned upside down to project upward as shown in FIGS.
  • the fact that the upwardly projecting locking piece 11 is largely fallen (falling) means that the protrusion 12 is in contact with the outer peripheral surface of the container opening M (annular projection M2). (Refer to FIG. 2), whereby the locking of the locking piece 11 with the annular projection M2 is performed well. That is, the protrusion 12 is located on the outer peripheral side of the annular protrusion M2 in a state where the cap 1 is attached to the container opening M.
  • a plurality of projection parts 12 are provided at intervals in the peripheral direction, and a plane of projection part nonexistence field 14 formed between projection parts 12 adjacent to the peripheral direction.
  • the central angle ⁇ in view is configured to be 30 ° or more, preferably 45 ° or more.
  • the upper limit of the central angle ⁇ may be, for example, 90 ° or less.
  • each locking piece 11 having the same configuration except for the presence or absence of the protruding portion 12 is provided at equal intervals in the circumferential direction, and the locking piece 11 having the protruding portion 12 And the locking pieces 11 not having the protrusions 12 are alternately arranged in the circumferential direction.
  • the circumferential width of the projecting portion 12 is about half of the circumferential width of the locking piece 11.
  • the width in the circumferential direction of the protruding portion 12 be one fourth or more and two thirds or less of the width in the circumferential direction of the locking piece 11.
  • the central angle ⁇ of the protrusion-free region 14 is obtained by making the number of the locking pieces 11 having the protrusions 12 the same as the number of the locking pieces 11 not having the protrusions 12. It is easy to make the angle more than 30 °.
  • the locking margin (area for locking) of the locking piece 11 with respect to the annular protrusion M2 can be effectively expanded, and the cap 1 is attached to the container opening M In the state, when the plug is opened, the locking piece 11 is prevented from passing over the annular protrusion M2, and thus it is possible to reliably prevent the opening from being completed without breaking the annular weakened portion 10.
  • the locking piece 11 is eight pieces, it does not restrict to this.
  • the number of the locking pieces 11 is 3 or more and 20 or less.
  • FIG. 4B shows the case where the protrusion 12 is provided on only three of the eight locking pieces 11.
  • the locking piece 11 having the protrusion 12 and the locking piece not having the protrusion 12. 11 can not be alternately arranged one by one in the circumferential direction.
  • each protrusion part 12 is located in the center in the circumferential direction width
  • the protrusions 12 are more dispersed (each protrusion-free region 14 is made more uniform) Yes).
  • the protrusions 12 are made more dispersed (each protrusion-free region 14 is made more uniform).
  • FIG. 4D by providing two of the three projections 12 (for convenience, shown by reference numeral 12b in FIG. 4D) over the two locking pieces 11, The protrusions 12 are made more dispersed (each protrusion free region 14 is made more uniform).
  • how to provide the protrusion 12 with respect to the locking piece 11 can be changed variously.
  • the protrusion 12 is provided only on half (three) of the six locking pieces 11, and the locking piece 11 having the protrusion 12 and the protrusion The locking pieces 11 not having 12 are alternately arranged one by one in the circumferential direction.
  • a total of four protrusions 12 which are one more than half of the six locking pieces are provided, and all the protrusions 12 are dispersed as much as possible (each protrusion The non-existing area 14 is made uniform).
  • the protrusion part 12 will be provided in all the latching pieces 11 as a result.
  • the number of the locking pieces 11 having the protruding portions 12 is a protrusion. It is one more than the number of the locking pieces 11 which do not have the part 12. Further, in the example shown in FIG. 4 (H), among the five locking pieces 11, only the three locking pieces 11 are provided with the protruding portions 12, and the number of the locking pieces 11 having the protruding portions 12 Is one less than the number of the locking pieces 11 having no protrusion 12.
  • each protrusion 12 is only at any one locking piece 11
  • the number of the locking pieces 11 having the protrusion 12 is
  • the number of the locking pieces 11 having the protrusion 12 may be the number of the locking pieces 11 having no protruding portions 12 as shown in FIG.
  • the number of the locking pieces 11 having the protrusions 12 is not greater than the number of the protrusions 12.
  • the number may be reduced by one or more than the number of the locking pieces 11 (for example, one half and one third of the number of the locking pieces 11 having no protrusion 12). Includes the case where a). If it combines, the number of the locking pieces 11 which have the protrusion part 12 can be one more or less than the number of the locking pieces 11 which do not have the protrusion part 12. As shown in FIG. However, the number of the locking pieces 11 having the protrusions 12 is one more than the number of the locking pieces 11 not having the protrusions 12, or conversely, the number difference between the two is odd. In the case of individual locking pieces, the number of locking pieces 11 is always an odd number.
  • a protrusion 12 may be provided extending across two (or more) locking pieces 11, and in this case, the lock having the protrusion 12 is provided.
  • the relationship between the number of pieces 11 and the number of locking pieces 11 not having the protrusion 12 is not necessarily defined as described above.
  • the flat surface of the protrusion non-existing region 14 formed between the protrusions 12 adjacent in the circumferential direction The protrusion 12 may be arranged and configured such that the central angle ⁇ in view is 30 ° or more, preferably 45 ° or more.
  • the protrusion 12 is disposed such that the central angle ⁇ (see FIG. 3) in plan view of the protrusion absence region 14 is 30 ° or more, preferably 45 ° or more. ⁇ It is desirable to be configured.
  • Reference Signs List 1 cap 2 ceiling wall 3 skirt wall 4 knurl groove 5 female screw 6 middle foot 7 annular rib 8 outer foot 9 tamper evidence band 10 annular weakening portion 11 locking piece 12 projecting portion 13 connecting portion 14 projecting portion absent area 52 male screw 53 female screw 54 skirt wall 55 cap body 56 annular weakening portion 57 tamper evidence band 58 annular projection 59 locking piece 60 projecting portion M container mouth M1 male thread M2 annular projection ⁇ central angle

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  • 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 au moyen desquels il est possible d'étendre une marge de verrouillage d'une pièce de verrouillage par rapport à une saillie annulaire tout en empêchant l'inversion de la pièce de verrouillage, et de provoquer une rupture fiable d'une partie affaiblie annulaire lors de l'ouverture. Le bouchon 1 comprend : une paroi de jupe 3 comportant une vis femelle 5 en prise par filetage avec une vis mâle M1 formée sur la périphérie externe d'une partie goulot de récipient M ; et une bande d'inviolabilité 9 accouplée à une section inférieure de la paroi de jupe 3 par l'intermédiaire d'une partie affaiblie annulaire 10. Sur le côté périphérique interne de la bande d'inviolabilité 9, une pluralité de pièces de verrouillage 11 verrouillées sur une saillie annulaire M2 disposée sur la périphérie externe de la partie goulot de récipient M depuis le dessous sont disposées à intervalles dans une direction circonférentielle. De plus, une pluralité de parties en saillie 12 faisant saillie à partir des extrémités de pointe des pièces de verrouillage 11 sont disposées à des intervalles dans la direction circonférentielle. Une région dépourvue de partie en saillie 14 formée entre les parties de saillie 12 adjacentes entre elles dans la direction circonférentielle a un angle central supérieur ou égal à 30° dans une vue en plan associée.
PCT/JP2018/035551 2017-10-10 2018-09-26 Bouchon en résine synthétique et récipient Ceased WO2019073794A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019548105A JPWO2019073794A1 (ja) 2017-10-10 2018-09-26 合成樹脂製キャップ及び容器

Applications Claiming Priority (2)

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JP2017196674 2017-10-10
JP2017-196674 2017-10-10

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WO2019073794A1 true WO2019073794A1 (fr) 2019-04-18

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PCT/JP2018/035551 Ceased WO2019073794A1 (fr) 2017-10-10 2018-09-26 Bouchon en résine synthétique et récipient

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06183450A (ja) * 1991-11-08 1994-07-05 Astra Plastique Sa タンパープルーフリングを備えた合成物質からなるスクリューキャップ
JPH10324353A (ja) * 1997-03-25 1998-12-08 Toshio Hakata 封印式キャップ
US20030127418A1 (en) * 2002-01-10 2003-07-10 Lothar Schweigert Tamper evident closure
WO2017006730A1 (fr) * 2015-07-08 2017-01-12 日本クロージャー株式会社 Capuchon et contenant doté d'un capuchon
WO2017061001A1 (fr) * 2015-10-08 2017-04-13 日本山村硝子株式会社 Capuchon en résine synthétique
JP6281029B1 (ja) * 2017-09-25 2018-02-14 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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06183450A (ja) * 1991-11-08 1994-07-05 Astra Plastique Sa タンパープルーフリングを備えた合成物質からなるスクリューキャップ
JPH10324353A (ja) * 1997-03-25 1998-12-08 Toshio Hakata 封印式キャップ
US20030127418A1 (en) * 2002-01-10 2003-07-10 Lothar Schweigert Tamper evident closure
WO2017006730A1 (fr) * 2015-07-08 2017-01-12 日本クロージャー株式会社 Capuchon et contenant doté d'un capuchon
WO2017061001A1 (fr) * 2015-10-08 2017-04-13 日本山村硝子株式会社 Capuchon en résine synthétique
JP6281029B1 (ja) * 2017-09-25 2018-02-14 日本山村硝子株式会社 合成樹脂製キャップ及び容器

Also Published As

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