WO2017043200A1 - Capuchon de résine synthétique - Google Patents

Capuchon de résine synthétique Download PDF

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Publication number
WO2017043200A1
WO2017043200A1 PCT/JP2016/071793 JP2016071793W WO2017043200A1 WO 2017043200 A1 WO2017043200 A1 WO 2017043200A1 JP 2016071793 W JP2016071793 W JP 2016071793W WO 2017043200 A1 WO2017043200 A1 WO 2017043200A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking piece
container mouth
synthetic resin
thick
cap
Prior art date
Application number
PCT/JP2016/071793
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
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 JP2017538910A priority Critical patent/JP6937542B2/ja
Publication of WO2017043200A1 publication Critical patent/WO2017043200A1/fr

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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 a synthetic resin cap that is attached to the mouth of a container that contains contents such as beverages.
  • a cap attached to the mouth of a container for storing contents such as beverages As a cap attached to the mouth of a container for storing contents such as beverages, a cap that can be confirmed at a glance whether or not it is opened is widely used.
  • a locking piece (flap) provided on the inner periphery of the tamper evidence band is provided on the outer periphery of the container mouth portion in accordance with the opening operation (rotation operation) from the state of being attached to the container mouth portion.
  • the bridge (bridge) connecting the tamper evidence band and the skirt wall is broken, and the cap body and the tamper evidence band are separated from each other (Patent Document 1). reference). Therefore, it is possible to easily confirm whether or not the opening operation has been performed by visually checking whether or not the bridge is broken.
  • the weight is reduced by thinning the skirt wall.
  • the present inventors have attempted to reduce the thickness of the locking piece, but due to the thinner locking piece, the locking force on the annular projection of the container mouth is insufficient. There is a fear.
  • the present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a synthetic resin cap capable of sufficiently maintaining the locking force to the annular projection of the container mouth while reducing the weight. There is.
  • a synthetic resin cap includes a skirt wall provided with a female screw that is screwed into a male screw formed on the outer periphery of a container mouth portion, and an annular weakening portion at a lower portion of the skirt wall.
  • a tamper-evidence band connected to the inner periphery of the tamper-evidence band, and a locking piece that can be locked from below on an annular protrusion provided on the outer periphery of the container mouth.
  • a plurality are provided at intervals in the direction, and a thick portion is provided at the edge of the locking piece.
  • the thick portion may be provided across the edge on the tip side and the left and right edges of the locking piece (claim 2).
  • the thick portions provided at the left and right edges of the locking piece may be thinner toward the base end side of the locking piece (Claim 3).
  • a recessed portion that is surrounded by the thick portion from three sides and recessed upward may be provided at the center of the lower surface of the locking piece.
  • a thick part is provided at the edge of the locking piece, and the rib effect based on the thick part is used to improve the strength of the locking piece. As a whole, it is possible to reduce the weight of the locking piece, and hence the cap.
  • FIG. 2 is a sectional view taken along line AA in FIG. 1.
  • A is a cross-sectional view taken along the line BB of FIG. 1
  • B is a cross-sectional view taken along the line CC of FIG.
  • a synthetic resin cap (hereinafter referred to as a cap) 1 shown in FIGS. 1, 2, 3A and 3B is attached to a mouth M (see FIG. 3A) of a container such as a PET bottle. And is integrally molded with polyethylene by compression molding or injection molding.
  • the raw material which forms the cap 1 is not specifically limited, Polypropylene etc. other than the polyethylene used by this embodiment are used suitably.
  • the cap 1 has a substantially circular top wall 2 in a plan view, and a substantially cylindrical skirt wall 3 extending downward from the outer peripheral portion of the top wall 2. Yes.
  • a knurled 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 is a male screw M1 formed on the outer periphery of the container mouth (see FIG. 3A). ).
  • the annular shape connected to the inner surface (lower surface) of the top wall 2 is provided.
  • the middle leg (inner ring) 6, the annular rib 7 and the annular outer leg (outer ring) 8 are in close contact with the container mouth M, whereby the container mouth M is sealed (FIG. 3A). reference). That is, as indicated by a virtual line in FIG. 3A, in the state where the cap 1 is attached to the container mouth portion M, the middle leg 6 is inserted into the container mouth portion M and the inner peripheral surface of the container mouth portion M is inserted.
  • the annular rib 7 is configured to be in close contact with the annular upper end surface of the container mouth portion M
  • the outer leg 8 is configured to be in close contact with the outer peripheral surface of the container mouth portion M.
  • the cap 1 is a pilfer-proof cap having a function of proving that it has not been opened (that has never been opened).
  • the unopened cap 1 attached to the container mouth M is opened (first time)
  • the cap 1 is rotated so that the coupling between the male screw M1 and the female screw 5 is released, the cap 1 is detached from the container mouth M, but the tamper evidence connected to the lower part of the skirt wall 3
  • a band (hereinafter simply referred to as “band”) 9 is configured to remain in the container mouth M.
  • the band 9 is connected to the lower part of the skirt wall 3 via an annular weakened portion 10 extending over the entire circumference of the skirt wall 3 (see FIG. 3).
  • the annular weakened portion 10 is connected to the skirt wall 3 and the band 9.
  • a part (outer peripheral part) of the bridge 10a is also cut by the slit 10b so that it is broken when pulled by a predetermined force.
  • each locking piece 11 protruding inward is provided on the inner peripheral side of the band 9 (eight in this example) at intervals in the circumferential direction (see FIGS. 1 to 3).
  • Each locking piece 11 is positioned substantially below an annular protrusion (bead portion) M2 formed below the male screw M1 on the outer periphery of the container mouth M in a state where the cap 1 is mounted on the container mouth M. Then, it is locked to the annular projection M2 by an opening operation (see FIG. 3A).
  • the locking piece 11 is configured to be able to be locked to the annular protrusion M2 from below, and the cap main body portion (the skirt wall 3 and the top wall 2) above the annular weakening portion 10 when opened is the container mouth portion.
  • the band 9 which is separated from M and below the annular weakened portion 10 remains in the container mouth M, and the annular weakened portion 10 is broken accordingly.
  • the band 9 is integrally formed with the cap body (the skirt wall 3 and the top wall 2), and the locking piece 11 provided on the band 9 protrudes downward as shown in FIG.
  • the cap 1 is attached to the container mouth M, the cap 1 is pushed up by the annular projection M2 to be inverted, and protrudes upward as indicated by a virtual line in FIG.
  • the thick part 12 is provided in the edge of the latching piece 11, and the rib effect based on this thick part 12 is, While the strength of the locking piece 11 is improved, the weight of the locking piece 11 as a whole and the weight of the cap 1 can be reduced as a whole.
  • the thick portion 12 is provided across the edge on the front end side of the locking piece 11 and the edges on both the left and right sides.
  • the thick part 12 provided in the edge part of the right-and-left both sides of the locking piece 11 is comprised so that it may become thin gradually toward the base end side of the locking piece 11, as shown to FIG. 3 (A). It is. Accordingly, the base end portion of the locking piece 11 can be provided with appropriate flexibility, and when the locking piece 11 is pushed up by the annular projection M2 and reversed when capping, the base end portion of the locking piece 11 Is difficult to break.
  • the upper surface of the locking piece 11 is substantially flush, and is surrounded by the thick portion 12 from the three sides at the center of the lower surface of the locking piece 11 and on the upper side. Since the recessed portion 13 to be recessed is formed, when the locking piece 11 is pushed up by the annular protrusion M2 and reversed when capping, the annular protrusion M2 does not come into contact with the thin recessed portion 13. Since it comes into contact with the thick portion 12 having a relatively high strength, it is difficult to cause a problem that the annular protrusion M2 collides with the thin recessed portion 13 and the locking piece 12 is broken.
  • the blurring surface part which is gradually thickened and widened toward the thick part 12 provided in the edge part of the right and left both sides is provided in the both ends of the recessed part 13.
  • the annular protrusion M2 it is difficult for stress to concentrate on both ends of the recessed portion 13, thereby preventing the locking piece 11 from being damaged.
  • the locking piece 11 that protrudes upward at the time of opening largely falls down, the locking piece 11 is easily reversed by receiving contact with the annular protrusion M2 and protrudes downward.
  • the piece 11 does not lock well with the annular protrusion M2.
  • the thick portion 12 provided on the distal end side of the locking piece 11 is configured to bulge to the lower surface side, the locking piece 11 that protrudes upwardly falls greatly. This (falling down) is prevented by the abutment of the thick portion 12 against the outer peripheral surface of the container mouth portion M (the portion M3 located immediately below the annular projection M2), whereby the locking piece 11 against the annular projection M2 is prevented.
  • the locking is performed well.
  • the blurring surface portions 14 are provided at both ends of the recessed portion 13, and the portion of the recessed portion 13 that is in contact with the thick portion 12 on the distal end side of the locking piece 11 is gradually moved toward the thick portion 12.
  • the thickened blur surface portion 15 (see FIG. 1) is provided, but such a blur surface portion may also be provided in other parts.
  • the upper surface of the locking piece 11 is substantially flush, and the recessed portion 13 is formed in the center of the lower surface of the locking piece 11 by being surrounded by the thick portion 12 from three sides and recessed upward.
  • the present invention is not limited to this.
  • the bottom surface of the locking piece 11 is substantially flush, and the recessed portion 13 is recessed in the upper side by being surrounded by the thick portion 12 at the center of the top surface of the locking piece 11 from three sides. May be formed.
  • the thick portions 12 are provided on all the locking pieces 11, but the thick portions 12 may be provided only on some of the locking pieces 11. It is also possible that the locking pieces 11 provided with the meat portion 12 and the locking pieces 11 not provided are alternately arranged in the circumferential direction of the band 9.
  • each locking piece 11 is made independent, but for example, the tips of adjacent locking pieces 11 may be connected to each other, and all the locking pieces 11 may be connected in a ring shape.

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

Abstract

La présente invention vise à fournir un capuchon de résine synthétique qui est léger et qui est conçu de telle sorte que la force de prise avec une saillie annulaire sur un embout de récipient peut être maintenue de façon suffisante. À cet effet, l'invention concerne un capuchon (1) qui comprend : une paroi de jupe comprenant un filetage femelle en prise avec un filetage mâle formé sur la périphérie externe d'un embout de récipient; et une bande inviolable reliée à la partie inférieure de la paroi de jupe par l'intermédiaire d'une section fragile annulaire. Une pluralité de sections de prise (11), capables d'être en prise depuis le dessous avec une saillie annulaire située sur la périphérie externe de l'embout de récipient, sont disposées à une distance circonférentielle les unes des autres sur le côté périphérique interne de la bande inviolable (9). Des sections à paroi épaisse (12) sont disposées au niveau de bords des sections de prise (11).
PCT/JP2016/071793 2015-09-11 2016-07-26 Capuchon de résine synthétique WO2017043200A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017538910A JP6937542B2 (ja) 2015-09-11 2016-07-26 合成樹脂製キャップ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015179199 2015-09-11
JP2015-179199 2015-09-11

Publications (1)

Publication Number Publication Date
WO2017043200A1 true WO2017043200A1 (fr) 2017-03-16

Family

ID=58239675

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/071793 WO2017043200A1 (fr) 2015-09-11 2016-07-26 Capuchon de résine synthétique

Country Status (2)

Country Link
JP (1) JP6937542B2 (fr)
WO (1) WO2017043200A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022137974A1 (fr) * 2020-12-22 2022-06-30 凸版印刷株式会社 Bouchon, récipient de conditionnement et procédé de fabrication du bouchon

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002193288A (ja) * 2000-12-20 2002-07-10 Japan Crown Cork Co Ltd 分別廃棄可能なプラスチックキャップ
JP2008184219A (ja) * 2007-01-31 2008-08-14 Japan Crown Cork Co Ltd プラスチックキャップ
JP2013086861A (ja) * 2011-10-20 2013-05-13 Japan Crown Cork Co Ltd 合成樹脂製容器蓋

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4413071B2 (ja) * 2004-05-11 2010-02-10 日本クラウンコルク株式会社 合成樹脂製容器蓋
JP2010260626A (ja) * 2009-05-11 2010-11-18 Japan Crown Cork Co Ltd プラスチック製螺子キャップ
JP5330921B2 (ja) * 2009-07-30 2013-10-30 日本クロージャー株式会社 合成樹脂製容器蓋
WO2012020637A1 (fr) * 2010-08-09 2012-02-16 日本山村硝子株式会社 Capuchon en résine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002193288A (ja) * 2000-12-20 2002-07-10 Japan Crown Cork Co Ltd 分別廃棄可能なプラスチックキャップ
JP2008184219A (ja) * 2007-01-31 2008-08-14 Japan Crown Cork Co Ltd プラスチックキャップ
JP2013086861A (ja) * 2011-10-20 2013-05-13 Japan Crown Cork Co Ltd 合成樹脂製容器蓋

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022137974A1 (fr) * 2020-12-22 2022-06-30 凸版印刷株式会社 Bouchon, récipient de conditionnement et procédé de fabrication du bouchon

Also Published As

Publication number Publication date
JP6937542B2 (ja) 2021-09-22
JPWO2017043200A1 (ja) 2018-06-28

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