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WO2018150896A1 - Couvercle de récipient ayant un corps métallique et un revêtement en résine synthétique - Google Patents

Couvercle de récipient ayant un corps métallique et un revêtement en résine synthétique Download PDF

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Publication number
WO2018150896A1
WO2018150896A1 PCT/JP2018/003432 JP2018003432W WO2018150896A1 WO 2018150896 A1 WO2018150896 A1 WO 2018150896A1 JP 2018003432 W JP2018003432 W JP 2018003432W WO 2018150896 A1 WO2018150896 A1 WO 2018150896A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
outer peripheral
region
peripheral edge
container lid
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/JP2018/003432
Other languages
English (en)
Japanese (ja)
Inventor
俊平 下地
英典 近藤
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.)
Nippon Closures Co Ltd
Original Assignee
Nippon Closures 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 Nippon Closures Co Ltd filed Critical Nippon Closures Co Ltd
Priority to CN201880006359.6A priority Critical patent/CN110167848B/zh
Priority to US16/485,004 priority patent/US20190359398A1/en
Priority to EP18755003.3A priority patent/EP3584192B1/fr
Priority to KR1020197019643A priority patent/KR102592793B1/ko
Publication of WO2018150896A1 publication Critical patent/WO2018150896A1/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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs
    • 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 container comprising a metal sheet main body having a circular top wall and a cylindrical skirt wall hanging from the periphery of the top wall, and a synthetic resin liner disposed on the inner surface of the top wall of the main body.
  • a container comprising a metal sheet main body having a circular top wall and a cylindrical skirt wall hanging from the periphery of the top wall, and a synthetic resin liner disposed on the inner surface of the top wall of the main body.
  • a synthetic resin liner disposed on the inner surface of the top wall of the main body.
  • Patent Documents 1 and 2 listed below include a circular top wall and a cylindrical skirt wall depending from the periphery of the top wall. And a container lid provided with a synthetic resin liner disposed on the inner surface of the top wall of the main body. An annular recess is formed at the upper end of the skirt wall of the main body.
  • the liner is molded by stamping the first layer formed by stamping the hard synthetic resin material supplied to the inner surface of the top wall and the soft synthetic resin material supplied to the bottom surface of the first layer. And the second layer.
  • the first layer of the liner has a circular central portion extending along the inner surface of the top wall of the main body, an outer peripheral edge portion of the top wall of the main body, and an annular outer portion extending along the upper end portion of the skirt wall.
  • the second layer of the liner is laminated at the center of the first layer.
  • the conventional container lid of the above-described form includes (1) a radially inner region in the outer peripheral edge of the first layer when the second layer is embossed. That is, there is a high possibility that the portion adjacent to the central portion in the outer peripheral edge portion is damaged. (2) When the second layer is stamped, the synthetic resin for forming the second layer is sufficiently smooth. It has been found that there is a problem to be solved that does not flow as required and that the second layer of the required shape may not be stamped.
  • the present invention has been made in view of the above-mentioned facts, and the first problem is that the second layer is embossed without causing separate problems such as a considerable increase in the amount of materials used. It is an object of the present invention to provide a new and improved container lid that avoids as much as possible damage to the radially inner region of the outer peripheral edge of the first layer.
  • a second object of the present invention is to provide a new and improved container lid capable of reliably embossing a second layer having a required shape.
  • the inventors of the present invention have found that when the second layer is stamped, the radially inner region of the outer peripheral edge of the first layer is usually damaged in the adjacent central portion.
  • the thickness of the radially inner region of the outer peripheral edge which is the same as the thickness of the radially outer region, is too small, and the mold part for stamping the second layer abuts with a considerable pressing force. It was recognized that it was caused by not having sufficient resistance. Based on this recognition, the thickness of the radially inner region of the outer peripheral edge of the first layer is made larger than the thickness of the radially outer region of the central portion, and there is a step at the boundary between the central portion and the outer peripheral edge.
  • the first problem can be solved by making it exist (the thickness of the radially outer region in the central part is also increased in the same manner, and the first problem is solved even if a step does not exist) But this increases the amount of material required to mold the first layer).
  • an annular thickness variation region in which the thickness gradually decreases outward in the radial direction at the center of the first layer is the second layer. It has been found that the synthetic resin material for forming the second layer can flow sufficiently smoothly when the layer is embossed.
  • a sheet metal main body having a circular top wall and a cylindrical skirt wall depending from the periphery of the top wall, A synthetic resin liner disposed on the inner surface of the top wall, The liner is formed by embossing a first layer formed by embossing a hard synthetic resin material supplied to the inner surface of the top wall and a soft synthetic resin material supplied to the lower surface of the first layer.
  • Composed of a second layer molded by The first layer of the liner includes a circular central portion extending along the inner surface of the top wall of the main body, an inner surface of the outer peripheral edge of the top wall of the main body, and an inner surface of the upper end portion of the skirt wall.
  • a ring-shaped outer peripheral edge that extends, The second layer of the liner is laminated to the central portion of the first layer;
  • the thickness of the radially inner region of the outer peripheral edge of the first layer of the liner is greater than the thickness of the radially outer region of the central portion, and there is a step at the boundary between the central portion and the outer peripheral edge.
  • a metal thin plate main body having a circular top wall and a cylindrical skirt wall depending from the periphery of the top wall, A synthetic resin liner disposed on the inner surface of the top wall, The liner is formed by embossing a first layer formed by embossing a hard synthetic resin material supplied to the inner surface of the top wall and a soft synthetic resin material supplied to the lower surface of the first layer.
  • Composed of a second layer molded by The first layer of the liner includes a circular central portion extending along the inner surface of the top wall of the main body, an inner surface of the outer peripheral edge of the top wall of the main body, and an inner surface of the upper end portion of the skirt wall.
  • a ring-shaped outer peripheral edge that extends, The second layer of the liner is laminated to the central portion of the first layer; In the container lid, In the central portion of the first layer, there is an annular thickness variation region in which the thickness gradually decreases outward in the radial direction.
  • a container lid is provided.
  • the step is preferably 0.05 to 0.40 mm.
  • the second layer has a circular thin central portion and an annular thick outer peripheral edge, and an annular protruding portion protruding downward is formed in a radially inner region of the thick outer peripheral edge.
  • the outer peripheral edge of the thickness variation region of the first layer is located radially inward from the inner peripheral edge of the annular protrusion.
  • the thickness variation region of the first layer is located opposite to the radially outer region of the thin central portion of the second layer, and the first layer has the first region in the radially outer region of the thin central portion of the second layer.
  • the thickness gradually increases radially outward in response to the thickness variation of the thickness variation region of one layer.
  • the thickness variation region is preferably inclined at an inclination angle of 0.5 to 3.0 degrees with respect to the horizontal. It is applied to a container made of sheet metal with an outer curl formed at the tip of the mouth and neck, and the outer peripheral surface of the annular protrusion of the second layer of the liner is at the upper end of the inner peripheral surface of the outer curl.
  • the lower surface of the radially outer region of the thick outer peripheral edge that is in close contact and located radially outward from the annular protrusion is in close contact with the upper surface or outer peripheral surface of the outer curl.
  • upper and lower used in the present specification and claims mean the upper and lower sides of the container lid in the upright state (that is, the state shown in FIGS. 1 to 3).
  • the thickness of the radially inner region of the outer peripheral edge of the first layer of the liner is larger than the thickness of the radially outer region of the central portion, and there is a step at the boundary between the central portion and the outer peripheral portion.
  • the thickness of the radially inner region of the outer peripheral edge of the first layer of the liner can be made sufficiently thick without excessively increasing the amount of material required for molding the first layer.
  • the thickness variation region in which the thickness gradually decreases outward in the radial direction.
  • the second layer is embossed, the flow of the material is promoted, and the second layer of the required shape can be embossed reliably.
  • the front view which shows a part in cross section of suitable embodiment of the container lid comprised according to this invention.
  • the enlarged view which expands and shows a part of FIG. The front view which shows a part in the state of mounting
  • a container lid which is configured according to the present invention and indicated as a whole by number 2, includes a thin metal plate body 4 and a synthetic resin liner 6.
  • the main body 4 which can be formed from an appropriate metal thin plate such as an aluminum-based alloy thin plate, has a circular top wall 8 and a cylindrical skirt wall 10 depending from the periphery of the top wall 8.
  • the boundary region between the top wall 8 and the skirt wall 10 has an arc shape in the cross section.
  • An annular recess 12 extending continuously in the circumferential direction is formed at the upper end of the skirt wall 10.
  • a plurality of slits (cuts) 14 extending in the circumferential direction are formed at intervals in the circumferential direction, and the region located below the slit 14 is in the radial direction. It is displaced towards.
  • a circumferentially breakable line 16 is disposed at the lower end portion of the skirt wall 10, and the skirt wall 10 is located above the circumferentially breakable line 16 and below the main portion 18 and the circumferentially breakable line 16. It is partitioned into an evidence skirt 20.
  • the circumferentially breakable line 16 in the illustrated embodiment includes a plurality of slits 22 extending in the circumferential direction at intervals in the circumferential direction and a plurality of bridge portions 24 left between the slits 22.
  • the tamper evidence skirt portion 20 is connected to the main portion 18 via a plurality of bridging portions 24.
  • Such a main body 4 itself is a well-known form, and therefore a detailed description of the main body 4 is omitted in this specification.
  • the liner 6 is composed of a first layer 26 and a second layer 28.
  • the first layer 26 is formed by stamping a synthetic resin material supplied to the inner surface of the top wall 8 of the main body 4. More specifically, the main body 4 is inverted and held on a base (not shown), and a soft and molten synthetic resin material is supplied to the central portion of the top wall 8, and the synthetic resin material has a required shape. Molding is performed by pressing a stamping member (not shown) with a required pressure. It is important that the first layer 26 is molded from a hard synthetic resin having excellent gas barrier properties such as polyethylene or polypropylene. However, the first layer 26 has a higher gas barrier property than the second layer 28 constituting the sealing layer.
  • the second layer 28 is formed by stamping a synthetic resin material supplied to the lower surface of the first layer 26. More specifically, the main body 2 on which the first layer 26 is molded is inverted and held on a base (not shown), and a soft and molten synthetic resin material is supplied to the center of the first layer 26. The synthetic resin material is molded by pressing a stamping member (not shown) having a required shape with a required pressure. It is important that the second layer 28 is molded from a soft synthetic resin having excellent sealing properties such as polyethylene or elastomer.
  • the first layer 26 extends along the inner surface 30 of the circular shape extending along the inner surface of the top wall 8 of the main body 4, the inner surface of the outer peripheral edge of the top wall 8 of the main body 4, and the inner surface of the upper end of the skirt wall 10.
  • the outer peripheral edge portion 32 has an annular shape.
  • the central portion 30 has an annular thickness variation region 34 in which the thickness gradually decreases outward in the radial direction (therefore, the lower surface extends obliquely upward in the radial outward direction). (It is preferable that the outer peripheral edge of the thickness variation region 34 is located in the radial direction in the vicinity of the annular protrusion 40 described later of the second layer 28).
  • the inclination angle ⁇ with respect to the horizontal of the lower surface of the thickness variation region 34 is preferably 0.5 to 3.0 degrees.
  • the thickness of the radially inner region of the outer peripheral edge 32 of the first layer 26 is larger than the thickness of the radially outer region of the central portion 30, and the thickness between the central portion 30 and the outer peripheral edge 32 is 0.05 to There is a step s that is preferably about 0.40 mm.
  • the second layer 28 laminated on the central portion 30 of the first layer 26 has a circular thin-walled central portion 36 and an annular thick outer peripheral edge 38.
  • An annular protrusion 40 that protrudes downward is present in the radially inner region of the outer peripheral edge 38.
  • the thickness of the radially inner region of the outer peripheral edge 32 of the first layer 26 constituting the liner 6 is greater than the thickness of the radially outer region of the central portion 30.
  • a step s exists at the boundary between the central portion 30 and the outer peripheral edge portion 32.
  • the thickness of the radially inner region of the outer peripheral edge portion 32 of the first layer 26 is relatively large.
  • the thickness of the radially outer region of the central portion 30 of the first layer 26 is relatively small, so that the amount of the synthetic resin material for forming the first layer 26 does not increase excessively. Furthermore, in the container lid 2 configured according to the present invention, the thickness variation region 34 in which the thickness gradually decreases outward in the radial direction is present in the central portion 30 of the first layer 26. When embossing 28, the synthetic resin material flows sufficiently smoothly outward in the radial direction, so that the second layer 28 having a required shape can be sufficiently reliably molded.
  • the mouth and neck portion 42 of the container can be formed from an appropriate metal thin plate such as a chromate-treated steel thin plate, a tin thin plate, or an aluminum-based alloy thin plate.
  • the mouth-and-neck portion 42 of the container which is a well-known form, has a substantially cylindrical shape as a whole.
  • An outer curl 44 is formed at the upper end where the outer diameter gradually decreases upward.
  • a male thread 46 and a locking jaw part 48 positioned below the male thread 46 are formed on the outer peripheral surface of the main part of the mouth and neck part 42.
  • the container lid 2 When the container lid 2 is attached to the mouth-and-neck portion 42 of the container and the mouth-and-neck portion 42 is sealed, the container lid 2 is fitted on the mouth-and-neck portion 42 and pressed downward so that the second layer 28 of the liner 6 is attached.
  • the outer peripheral surface of the annular protrusion 40 of the second layer 28 and the radially outer side of the thick outer peripheral edge 38 positioned radially outward from the annular protrusion 40.
  • FIG. 3 shows the outer peripheral edge of the top wall 8 of the main body 2 and the upper end of the skirt wall 10 while maintaining the state where the lower surface of the region is in close contact with the inner circumferential upper end or upper surface of the outer curl 44 of the mouth / neck 40. And it deform
  • the outer peripheral surface of the annular protrusion 40 of the second layer 28 of the liner 6 is in close contact with the upper end of the inner peripheral surface of the outer curl 44 and is located on the radially outer side of the annular protrusion 40.
  • the lower surface of the radially outer region of the portion 38 is in close contact with the upper surface or outer peripheral surface of the outer curl 44.
  • the main portion 18 of the skirt wall 10 of the main body 2 is deformed along the male screw 46 formed in the mouth-and-neck portion 42 of the container to form a female thread, and the tamper in the skirt wall 10 of the main body 2 is formed.
  • the bottom end of the evidence skirt 20 is deformed radially inward to be engaged with the locking jaw 48 in the mouth / neck portion 42 of the container.
  • the container lid 2 When opening the mouth-and-neck portion 42 to consume the contents of the container, the container lid 2 is opened in the opening direction by placing a finger on the skirt wall 8 of the main body 4, that is, counterclockwise as viewed from above in FIG. Rotate.
  • the female thread formed in the main portion 18 of the skirt wall 10 moves along the male thread 46 of the mouth-and-neck part 42, so that the container lid 2 is moved upward with respect to the mouth-and-neck part 42.
  • the lower end portion of the tamper evidence skirt portion 20 of the skirt wall 10 is locked to the locking jaw portion 48 of the mouth-and-neck portion 42, the upward movement is prevented and the skirt wall 10 is formed on the skirt wall 10.
  • Container lid 4 Main body 6: Liner 8: Top wall 10: Skirt wall 26: First layer 28: Second layer 30: Center portion of first layer 32: Outer peripheral edge portion of first layer 34: Variation in thickness Area 36: Thin center portion of the second layer 38: Thick outer peripheral portion of the second layer 40: Annular protrusion 42: Mouth neck

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

Abstract

L'invention concerne un couvercle de récipient qui comprend : un corps de plaque mince métallique ayant une paroi de surface supérieure et une paroi de jupe suspendue à la périphérie de la paroi de surface supérieure ; et un revêtement en résine synthétique disposé sur une surface interne de la paroi de surface supérieure du corps, le revêtement étant constitué d'une première couche (26) formée sur la surface interne de la paroi de surface supérieure et d'une seconde couche (28) formée sur une surface inférieure de la première couche. Une région intérieure dans une direction de rayon d'une partie périphérique externe (32) de la première couche est rendue plus épaisse qu'une région extérieure dans la direction de rayon d'une partie centrale (30) pour former une marche au niveau d'une limite entre la partie centrale et la partie périphérique externe. De plus, la partie centrale de la première couche a une région de variation d'épaisseur circulaire (34) dont l'épaisseur diminue progressivement vers l'extérieur dans la direction de rayon.
PCT/JP2018/003432 2017-02-15 2018-02-01 Couvercle de récipient ayant un corps métallique et un revêtement en résine synthétique Ceased WO2018150896A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880006359.6A CN110167848B (zh) 2017-02-15 2018-02-01 包括金属主体和合成树脂内衬的容器盖
US16/485,004 US20190359398A1 (en) 2017-02-15 2018-02-01 Container lid comprising metal body and synthetic resin liner
EP18755003.3A EP3584192B1 (fr) 2017-02-15 2018-02-01 Couvercle de récipient ayant un corps métallique et un revêtement en résine synthétique
KR1020197019643A KR102592793B1 (ko) 2017-02-15 2018-02-01 금속제 본체 및 합성 수지제 라이너를 구비한 용기 덮개

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-025771 2017-02-15
JP2017025771A JP7141812B2 (ja) 2017-02-15 2017-02-15 金属製本体及び合成樹脂製ライナーを備えた容器蓋

Publications (1)

Publication Number Publication Date
WO2018150896A1 true WO2018150896A1 (fr) 2018-08-23

Family

ID=63169833

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/003432 Ceased WO2018150896A1 (fr) 2017-02-15 2018-02-01 Couvercle de récipient ayant un corps métallique et un revêtement en résine synthétique

Country Status (6)

Country Link
US (1) US20190359398A1 (fr)
EP (1) EP3584192B1 (fr)
JP (2) JP7141812B2 (fr)
KR (1) KR102592793B1 (fr)
CN (1) CN110167848B (fr)
WO (1) WO2018150896A1 (fr)

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CN112912318A (zh) * 2018-10-31 2021-06-04 大和制罐株式会社 盖

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KR102728721B1 (ko) * 2019-09-25 2024-11-08 니혼 야마무라가라스 가부시키가이샤 캡
US11794450B2 (en) * 2020-12-18 2023-10-24 Altria Client Services Llc Polymer-laminated metal lid
KR102443711B1 (ko) * 2022-02-07 2022-09-16 세왕금속공업(주) 씰 라이너 분리형 병마개
US12325559B2 (en) * 2023-01-03 2025-06-10 Uab Baltic Caps Closure device

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JP2016026961A (ja) 2014-06-27 2016-02-18 日本クロージャー株式会社 金属製キャップとその製造方法

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JP2002332059A (ja) * 2001-05-10 2002-11-22 Toyo Seikan Kaisha Ltd 滑剤落下防止手段を備えた容器蓋
US7611026B1 (en) * 2002-08-12 2009-11-03 Rexam Closure Systems Inc. Tamper-evident closure having a sealing disk and package for high-temperature applications
JP2006327678A (ja) * 2005-05-30 2006-12-07 Japan Crown Cork Co Ltd 酸素吸収性を有する容器蓋
JP2015003325A (ja) 2013-06-19 2015-01-08 ユニバーサル製缶株式会社 ライナ付キャップの製造方法及びライナ付キャップ並びにキャップ付容器
JP2016026961A (ja) 2014-06-27 2016-02-18 日本クロージャー株式会社 金属製キャップとその製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112912318A (zh) * 2018-10-31 2021-06-04 大和制罐株式会社 盖
EP3875391A4 (fr) * 2018-10-31 2022-07-27 Daiwa Can Company Capuchon
CN112912318B (zh) * 2018-10-31 2023-02-17 大和制罐株式会社 盖
US11834228B2 (en) 2018-10-31 2023-12-05 Daiwa Can Company Cap

Also Published As

Publication number Publication date
JP2021120301A (ja) 2021-08-19
CN110167848A (zh) 2019-08-23
EP3584192A4 (fr) 2021-02-24
KR20190118550A (ko) 2019-10-18
US20190359398A1 (en) 2019-11-28
JP7506027B2 (ja) 2024-06-25
JP2018131234A (ja) 2018-08-23
EP3584192B1 (fr) 2022-03-30
EP3584192A1 (fr) 2019-12-25
JP7141812B2 (ja) 2022-09-26
KR102592793B1 (ko) 2023-10-20
CN110167848B (zh) 2022-02-15

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