EP3275801B1 - Lid assembly for resin container - Google Patents

Lid assembly for resin container Download PDF

Info

Publication number: EP3275801B1
Authority: EP; European Patent Office
Prior art keywords: cap; projections; mouth part; lid assembly; single thread
Prior art date: 2015-03-24
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.): Active

Application number

EP15886299.5A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP3275801A4 (en

EP3275801A1 (en

Inventor

Riki Takano

Toshiya Kobayashi

Takuto Kato

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.)

Suntory Holdings Ltd

Original Assignee

Suntory Holdings 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.)

2015-03-24

Filing date

2015-03-24

Publication date

2020-05-27

2015-03-24 Application filed by Suntory Holdings Ltd filed Critical Suntory Holdings Ltd

2018-01-31 Publication of EP3275801A1 publication Critical patent/EP3275801A1/en

2018-12-19 Publication of EP3275801A4 publication Critical patent/EP3275801A4/en

2020-05-27 Application granted granted Critical

2020-05-27 Publication of EP3275801B1 publication Critical patent/EP3275801B1/en

Status Active legal-status Critical Current

2035-03-24 Anticipated expiration legal-status Critical

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
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
- B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
- B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
- 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
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- 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
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0471—Threaded or like caps or cap-like covers secured by rotation with means for positioning the cap on the container, or for limiting the movement of the cap, or for preventing accidental loosening of the cap
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
- B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth

Definitions

the present invention relates to a lid assembly for a resin container including a mouth part with a male screw provided in its outer circumferential face, and a cap with a female screw provided in its inner circumferential face, the female screw having a plurality of projections that intermittently continue in a circumferential direction, in which the male screw has a single thread portion formed at least in part of a circumference of the screw where only one thread runs between a distal end and a proximal end of the mouth part, and the female screw of the cap is engaged with the male screw of the mouth part to screw the cap to seal the mouth part.
the liquid thermally expands and then loses carbonic acid to increase inner pressure of the container.
the male screw provided in the mouth part engages with the female screw provided in the cap to prevent the female screw positioned under the male screw from being pushed up, which in turn prevents the top of the cap from being pushed up.
the resin container is maintained in a sealed state to prevent loss of carbonic acid.
US 2009/045158 A1 describes an internally threaded plastic closure including an array of axially extending, circumferentially spaced internal ribs which intersect the internal thread formation of the closure.
the inventors have found that the arrangement including the single thread portion formed in part of the circumference of the male screw where only one thread runs between the distal end and the proximal end of the mouth part decreases a force of preventing the female screw from being pushed up in the single thread portion.
the increase in inner pressure of the resin container might break the sealed state and lead to loss of carbonic acid.
a design change in the mouth part may be suggested so that the single thread portion may not be present.
Such a change should be accompanied by a design change in the cap as well.
increasing the number of threads might cause other disadvantages such as increasing the height of the mouth part or resulting in special specifications that do not meet the standards of the general-purpose mouth part.
An object of the present invention is to provide a lid assembly for a resin container for desirably maintaining a sealed state of the resin container only by changing a design of a cap.
a lid assembly for a resin container includes a mouth part with a male screw provided in its outer circumferential face, and a cap with a female screw provided in its inner circumferential face.
the female screw has a plurality of projections that intermittently continue in a circumferential direction.
the male screw has a single thread portion formed at least in part of a circumference of the screw where only one thread runs between a distal end and a proximal end of the mouth part.
the female screw of the cap is engaged with the male screw of the mouth part to screw the cap to seal the mouth part.
the projections include extended projections to be located under the single thread portion of the male screw. Each of the extended projections has a circumferential length greater than a circumferential length of the other projections.
the above arrangement in which the projection located under the single thread portion has a circumferential length greater than a circumferential length of the other projections prevents the female screw from being pushed up and eventually prevents a top of the cap from being pushed up. Therefore, such an arrangement can desirably maintain the sealed state of the resin container only by changing the design of the cap.
the extended projections are located under the single thread portion over the range covering from a maximum screwed position in which the cap is screwed to the mouth part to a maximum amount, to a minimum screwed position in which the cap is screwed to the mouth part to a minimum amount required to seal the mouth part.
the cap is not necessarily screwed to the mouth part to the maximum amount (maximum screwed position) but is only required to be screwed to the minimum necessary amount (minimum screwed position).
the mount part can be sealed tight by screwing the cap to any position between the maximum screwed position and the minimum screwed position.
the extended projections are located under the single thread portion over the range covering from the maximum screwed position to the minimum screwed position, which allows the extended projections to be located under the single thread portion in any position between the maximum screwed position and the minimum screwed position.
the female screw is prevented more accurately from being pushed up.
the extended projections project from the inner circumferential face of the cap more outward than the other projections.
Such an arrangement allows the extend projection to come into contact with the single thread portion with a wider area, and thus can further prevent the female screw from being pushed up and eventually prevent the top of the cap from being pushed up.
the extended projections have an angular edge portion.
Providing the extended projections with the angular edge portion allows the extended projections to engage with the single thread portion more firmly. Such an arrangement can further prevent the female screw from being pushed up and eventually prevent the top of the cap from being pushed up.
a rib is provided at least in a portion of the cap corresponding to the single thread portion for connecting an outer seal provided in the cap to the inner circumferential face of the cap, the outer seal sealing the outer circumferential face of the mouth part.
the top of the cap is pushed up because it has been expanded and deformed.
the above arrangement provides the rib between the outer seal and the inner circumferential face of the cap.
the rib can prevent the top of the cap from expanding and deforming in the portion corresponding to the single thread portion, which can further prevent the top of the cap from being pushed up.
the lid assembly S for a resin container includes a mouth part 10 having a male screw 12 provided in its outer circumferential face 11, and a cap 20 having a female screw 22 provided in its inner circumferential face 21.
the female screw 22 includes a plurality of projections 23 that intermittently continue in a circumferential direction.
the male screw 12 has a single thread portion 13a formed at least in part of the circumference of the screw where only one thread runs between a distal end and a proximal end of the mouth part 10.
the female screw 22 of the cap 20 is engaged with the male screw 12 of the mouth part 10 to screw the cap 20 to seal the mouth part 10 tight.
the projections 23 include extended projections 24 and 25 to be located under the single thread portion 13a of the male screw 12.
Each of the extended projections 24 and 25 has a circumferential length greater than a circumferential length of the other projections 23.
the lid assembly S includes the mouth part 10 and the cap 20 attached to the mouth part 10.
the mouth part 10 has the male screw 12 provided in its outer circumferential face 11
the cap 20 has the female screw 22 provided in its inner circumferential face 21.
the female screw 22 of the cap 20 is engaged with the male screw 12 of the mouth part 10 to screw the cap 20 to seal the mouth part 10 tight.
the bottle 1 may be made of a primary component of thermoplastic resin such as polyethylene, polypropylene, and polyethyleneterephthalate to be integrally molded by stretch molding such as biaxial stretch blow molding.
the capacity of the bottle 1 may unlimitedly range from 200 milliliters to 2 liters, which are commonly distributed.
a liquid filling the bottle 1 is not limited and may be drinkables such as drinking water, tea, fruit juice, coffee, cocoa, refreshing beverages, alcoholic beverages, lactic beverages and soup, or liquid flavoring such as sauce and soy sauce.
the lid assembly 1 according to the current embodiment is particularly preferable when applied to the bottle 1 filled with a carbonated beverage, which may particularly increase inner pressure of the bottle 1 when the bottle 1 is stored at high atmosphere temperature to thermally expand the liquid and cause loss of carbonic acid.
Other beverages than the carbonated beverage may also increase the inner pressure of the bottle 1 by thermal expansion of the content, and thus the lid assembly 1 according to the current embodiment may be preferably used for noncarbonated beverages as well.
the male screw 12 of the mouth part 10 includes threads 13 that radially project from its outer circumferential face 11 (in a direction normal to the outer circumferential face 11) and intermittently continue spirally in the circumferential direction.
the male screw 12 has the single thread portion 13a formed at least in part of the circumference of the screw where only one thread runs between the distal end and the proximal end of the mouth part 10.
the plurality of projections 23 formed in the female screw 22 of the cap 20 run intermittently continuously in the circumferential direction.
the male screw 12 (threads 13) and the female screw 22 (projections 23) complement each other so that each of the threads 13 of the male screw 12 may be fitted to a gap defined by two vertically adjacent projections 23.
the projections 23 of the male screw 22 includes the extended projections 24 and 25 continuously provided and having a circumferential length greater than a circumferential length of the remaining projections 23.
Those extended projections 24 and 25 are configured to be positioned under the single thread portion 13a of the male screw 12 (adjacent to the proximal end of the mouth part 10) when the cap 20 is screwed to seal the mouth part 10 tight.
the cap 20 is not necessarily screwed to the mouth part 10 to a maximum amount (maximum screwed position) but is only required to be screwed to a minimum necessary amount (minimum screwed position).
the mount part 10 can be sealed tight by screwing the cap to any position between the maximum screwed position and the minimum screwed position.
a difference in screw amount between the maximum screwed position and the minimum screwed position corresponds to a length of an arc of a circle with its central angle of 35 degrees when the outer circumferential face 11 of the mouth part 10 is defined as a circumference of the circle.
each of the extended projections 24 and 25 is designed to have a length corresponding to the length of the arc of the circle with its central angle of 35 degrees when the outer circumferential face 11 of the mouth part 10 is defined as the circumference of the circle. More particularly, the extended projections 24 and 25 are provided within a range of an arc with its central angle of 70 degrees. While the extended projection 24 is located under the single thread portion 13a in the maximum screwed position (see Fig. 3 ), the extended projection 25 is located under the single thread portion 13a in the minimum screwed position (see Fig. 4 ). In a screwed position between the maximum screwed position and the minimum screwed position (see Fig.
both the extended projections 24 and 25 are located under the single thread portion 13a.
the extended projection 24 and/or the extended projection 25 is located under the single thread portion 13a over the range covering from the maximum screwed position and the minimum screwed position.
Fig. 5(a) shows a state in which the extended projection 24 is located under the single thread portion 13a
Fig. 5(b) shows a state in which the other projections 23 are located under the single thread portion 13a.
the extended projection 24 projects from the inner circumferential face 21 of the cap 20 more outward than the other projections 23.
the extended projection 24 has an angular edge portion 24a.
the projection 25 also projects from the inner circumferential face 21 of the cap 20 more outward than the other projections 23 and has an angular edge portion.
an outer seal 27 projects from an inner face 26a of the top 26 of the cap 20 to seal the outer circumferential face 11 of the outer mouth 10.
a rib 28 is provided in a portion of the cap corresponding to the single thread portion 13a when the cap 20 is screwed to seal the mouth part 10 tight for connecting the outer seal 27 to the inner circumferential face 21 of the cap 20. More particularly, the rib 28 is provided above each of the extended projections 24 and 25.
the extended projection 24 and/or the extended projection 25 is located under the single thread portion 13a. More particularly, the single thread portion 13a engages with the extended projection 24 or the extended projection 25 when the inner pressure of the bottle 1 increases to push up the top 26 of the cap 20. It is common that a force for preventing the engaged female screw 12 from being pushed up is decreased in the single thread portion 13a.
the lid assembly S according to the current embodiment can prevent deformation of the engaged extended projections 24 and 25 because those projections have increased lengths in the circumferential direction. Consequently, the single thread portion 13a prevents the female screw 12 from being pushed up.
the extended projection 24 projects from the inner circumferential face 21 of the cap 20 more outward than the other projections 23, which allows the extended projection 24 to come into contact with the single thread portion 13a with a wide area.
the angular edge portion 24a of the extended projection 24 allows the projection 24 to engage with the single thread portion 13a more firmly. Such an arrangement further prevents the female screw 13 from being pushed up.
the extended projection 25 is shaped in a similar manner to the extended projection 24, and thus performs the same effect.
the rib 28 is provided in the position of the cap corresponding to the single thread portion 13a to connect the outer seal 27 to the inner circumferential face 21 of the cap 20, which prevents expansion and deformation of the top 26 of the cap 20. Such an arrangement further prevents the top 26 of the cap 20 from being pushed up.
the lid assembly S according to the current embodiment increases the force of preventing the female screw 23 from being pushed up and prevents expansion and deformation of the top 26 of the cap 20, and eventually prevents the top 26 of the cap 20 from being pushed up. In this manner, the lid assembly S according to the current embodiment can desirably maintain the sealed state in the bottle 1 only by changing the design of the cap 20.
the present invention is applicable to any lid assembly for a resin container to be filled with a liquid, for example.

Landscapes

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

EP15886299.5A 2015-03-24 2015-03-24 Lid assembly for resin container Active EP3275801B1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/JP2015/058840 WO2016151746A1 (ja)	2015-03-24	2015-03-24	樹脂製容器の蓋構造

Publications (3)

Publication Number	Publication Date
EP3275801A1 EP3275801A1 (en)	2018-01-31
EP3275801A4 EP3275801A4 (en)	2018-12-19
EP3275801B1 true EP3275801B1 (en)	2020-05-27

Family

ID=56978847

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP15886299.5A Active EP3275801B1 (en)	2015-03-24	2015-03-24	Lid assembly for resin container

Country Status (6)

Country	Link
EP (1)	EP3275801B1 (es)
JP (1)	JP6595579B2 (es)
ES (1)	ES2805097T3 (es)
SG (1)	SG11201707785WA (es)
TW (1)	TWI603896B (es)
WO (1)	WO2016151746A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT202100001430A1 (it) *	2021-01-26	2022-07-26	Sacmi	Tappo per contenitore.

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* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3365243A4 (en)	2015-10-23	2019-08-07	Husky Injection Molding Systems Luxembourg IP Development S.à.r.l	CONTAINERS AND CLOSURES
JP6956749B2 (ja) *	2017-09-28	2021-11-02	サントリーホールディングス株式会社	内圧が陽圧となるボトル
US10543960B2 (en) *	2017-11-28	2020-01-28	Thermos L.L.C.	Lid for a beverage container
JP7588935B2 (ja)	2020-11-30	2024-11-25	株式会社吉野工業所	ねじキャップ付き容器

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US4090629A (en) *	1977-08-22	1978-05-23	International Tools (1973) Limited	Spiral lock safety closure
JP2004035066A (ja) *	2002-07-04	2004-02-05	Toppan Printing Co Ltd	径歪み矯正リブ付キャップ
US20090045158A1 (en) *	2007-08-14	2009-02-19	Alcoa Closure Systems International, Inc.	Threaded closure with internal ribs
GB2476089A (en) *	2009-12-10	2011-06-15	Beeson & Sons Ltd	Container closure assembly with tamper evident ring
JP5934613B2 (ja) *	2012-02-14	2016-06-15	日本山村硝子株式会社	樹脂製キャップ

2015
- 2015-03-24 WO PCT/JP2015/058840 patent/WO2016151746A1/ja active Application Filing
- 2015-03-24 JP JP2017507202A patent/JP6595579B2/ja active Active
- 2015-03-24 EP EP15886299.5A patent/EP3275801B1/en active Active
- 2015-03-24 ES ES15886299T patent/ES2805097T3/es active Active
- 2015-03-24 SG SG11201707785WA patent/SG11201707785WA/en unknown
2016
- 2016-03-21 TW TW105108670A patent/TWI603896B/zh active

Non-Patent Citations (1)

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Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT202100001430A1 (it) *	2021-01-26	2022-07-26	Sacmi	Tappo per contenitore.
EP4032828A1 (en) *	2021-01-26	2022-07-27	Sacmi Cooperativa Meccanici Imola Societa' Cooperativa	Cap for container
US11565854B2 (en)	2021-01-26	2023-01-31	Sacmi Cooperativa Meccanici Imola Societa' Cooperativa	Cap for a container

Also Published As

Publication number	Publication date
TW201641379A (zh)	2016-12-01
EP3275801A4 (en)	2018-12-19
WO2016151746A1 (ja)	2016-09-29
ES2805097T3 (es)	2021-02-10
JP6595579B2 (ja)	2019-10-23
SG11201707785WA (en)	2017-10-30
JPWO2016151746A1 (ja)	2018-01-25
TWI603896B (zh)	2017-11-01
EP3275801A1 (en)	2018-01-31

Publication	Publication Date	Title
EP3275801B1 (en)	2020-05-27	Lid assembly for resin container
AU2002339179B2 (en)	2008-08-21	Closure assembly for a wide mouth vessel
CA2577240C (en)	2013-08-13	Container closure assembly with internal neck thread
US4098419A (en)	1978-07-04	Blow molded plastic bottle and antitamper cap
AU2010209515B2 (en)	2016-05-05	Container closure assembly with pressure seal
US9096356B2 (en)	2015-08-04	Container finish for metal lug closure
US20080296251A1 (en)	2008-12-04	Non-Removable Finish and Closure System
MX2015004085A (es)	2015-07-06	Recipiente, cierre y empaque.
WO2015061892A1 (en)	2015-05-07	Screw cap for containers
WO2018047711A1 (ja)	2018-03-15	樹脂製キャップ
US6772894B1 (en)	2004-08-10	Closure with seal member
US5848717A (en)	1998-12-15	Snap-on seal arrangement on a container
JP6163367B2 (ja)	2017-07-12	合成樹脂製キャップ、閉止装置、および飲料入り閉止装置
EP3521195B1 (en)	2021-12-22	Cap for use with bottle having positive internal pressure, and bottle with cap attached thereto
US20180029750A1 (en)	2018-02-01	Method and Apparatus for Blow-Moulded Stackable Receptacles
AU2018232270B2 (en)	2023-05-25	Aseptic filling bottle
KR102728718B1 (ko)	2024-11-08	캡
JP4341828B2 (ja)	2009-10-14	複合キャップ
KR200315375Y1 (ko)	2003-06-02	봉인구조를 갖는 튜브용기 뚜껑
JPH09142505A (ja)	1997-06-03	合成樹脂製キャップ
KR20050107721A (ko)	2005-11-15	파우치 용기의 뚜껑 결합 구조

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