GB2120219A - Containers - Google Patents

Containers Download PDF

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Publication number
GB2120219A
GB2120219A GB08313564A GB8313564A GB2120219A GB 2120219 A GB2120219 A GB 2120219A GB 08313564 A GB08313564 A GB 08313564A GB 8313564 A GB8313564 A GB 8313564A GB 2120219 A GB2120219 A GB 2120219A
Authority
GB
United Kingdom
Prior art keywords
closure
fin
sealing
container
shoulder
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.)
Granted
Application number
GB08313564A
Other versions
GB8313564D0 (en
GB2120219B (en
Inventor
Peter Reginald Haines
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.)
Arconic Closure Systems International UK Ltd
Original Assignee
Metal Closures 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 Metal Closures Ltd filed Critical Metal Closures Ltd
Priority to GB08313564A priority Critical patent/GB2120219B/en
Publication of GB8313564D0 publication Critical patent/GB8313564D0/en
Publication of GB2120219A publication Critical patent/GB2120219A/en
Application granted granted Critical
Publication of GB2120219B publication Critical patent/GB2120219B/en
Expired legal-status Critical Current

Links

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
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck

Abstract

A one-piece moulded closure for a bottle or other container for carbonated or still beverages has an inwardly and downwardly inclined sealing fin 16 extending from the region of the outer edge of the top of the closure, and two support rings 20, 21 moulded on the underside of the top serve to limit the extent of upward deflection of the fin when the closure is screwed on to the container and is contacted by the top of the container. The fin forms a seal with the top of the container. Any pressure within the container is applied also to the top surface of the fin so as to urge it more tightly into sealing engagement with the top of the container, interruptions 22 being provided for this purpose in the rings 20, 21. <IMAGE>

Description

SPECIFICATION Improvements relating to closures for bottles and other containers This invention relates to closures for container and has a particularly useful but not exclusive application in closures for bottles intended to contain liquid carbonated or still beverages.
According to this invention there is provided a container closure having a top and a depending peripheral skirt, an internal annular resilient sealing fin extending inwardly from the region of the junction between the top and the skirt, and two support ridges projecting from the underside of the top towards spaced coaxial locations on the sealing fin for urging the fin into sealing engagement with the neck of a container, and passage means operating, when the support rings are in contact with the sealing fin, to cause the annular space between the two support ridges and the annular space between the radially outer support ring and the sealing fin to be subjected to the same pressure as obtains within the container.
The sealing fin is preferably inclined inwardly and away from the top of the closure.
Preferably also the radially inner support ridge projects further from the top than the outer support ridge.
According to a preferred feature of the invention the closure is a one-piece moulded closure, the skirt having an internal screw thread and, above the screw-thread, a shoulder portion adapted to form a seal with an external cylindrical surface of the neck of the container, and the sealing fin has its root in the upper portions of the shoulder so that the shoulder and the fin together envelop said cylindrical surface and the top of the neck of the container.
-The lower surface of the sealing fin is preferably formed with concentric annular ribs for engaging the sealing surfaces of the container neck, and the radially inwardly facing surface of the shoulder may also be formed with sealing ribs.
The sealing ribs preferably have a saw-tooth configuration when viewed in cross-section, and have the advantage of providing a series of line contacts between the fin and the co-operating sealing surfaces of the container. The ribs may also assist in centring the closure on the neck during application of the closure.
- According to a preferred feature of the invention, the top of the closure thickens progressively towards its centre.
The skirt of the closure will normally be screwthreaded to engage a corresponding screw-thread provided on the external surface of the neck of a container.
Closures in accordance with the present invention are preferably moulded from a plastics material such as polyethylene or polypropylene by injection moulding. The closure may also include a pilferproof sealing ring of a known type extending downwardly from the base of the skirt and adapted to engage with corresponding retaining means on the neck of the container.
One embodiment of the present invention will now be des rssed by way of example with reference to the accompanying drawing showing in cross section a closure according to the invention.
Referring to the drawing the closure is moulded from a plastics material and comprises a top 10 and a peripheral depending skirt 11. The top 10 increases in thickness progressively towards the lengthwise axis of the closure. The external surface of the skirt is provided with a plurality of longitudinal flutes 13 to provide improved grip for applying and removing the closure.
The skirt of the closure has an internal screwthread ridge 14 which in the illustrated construction extends through just over one complete turn of the closure, and above the ridge is formed with an inwardly projecting shoulder 15 extending to the top 10. From the shoulder, at a location near the top a resilient annular sealing fin 16 extends inwardly and downwardly and terminates in an edge 17. In the construction shown the fin is slightly curved in cross-section, the convex face 18 of the fin being nearer the top. The underneath face of the fin and the adjoining surfaces of the shoulder are formed with a series of sealing ribs 19 of saw-tooth form.
Two stiff concentric support ridges 20, 21 project from the underside of the top towards the sealing fin, the inner ring 20 projecting to a greater extent than the outer ring 21. The two rings have each four short interruptions 22 in their length, spaced apart at intervals of 90" about the central axis of the closure.
When the closure is applied to a bottle, the sealing fin 16 flexes as it comes into engagement with the rim about the mouth of the bottle, and screwing the closure on to the bottle bring the support ridges 20, 21 into contact with the upper surface of the sealing fin to press the ribs on the fin into good sealing engagement with the rim. At the same time the ribs 19 on the shoulder 15 come into sealing engagement with an external cylindrical surface adjoining the rim of the bottle. Since the inner support ridge 20 projects to a greater extent below the top than the outer support ridge 21 the two ridges tend to maintain the sealing fin in an inclined attitude.When the bottle contains a carbonated beverage, the gas pressure within the bottle is transmitted through the interruptions 22 in the lengths of the support ridges to the upper surface of the fin so as to assist in pressing the fin on to the rim of the bottle. The ribs on the shoulder and sealing fin form a series of line-contact sealing zones with the neck of the container and by reason of the support given to the sealing fin by the support ridges the fin can be made more flexible, which also assists in achieving a satisfactory seal while enabling the amount of material in the closure to be reduced, and reducing the torque necessary to tighten the closure.
1. A container closure having a top and a depending peripheral skirt, an internal annular resilient sealing fin extending inwardly from the region of the junction between the top and the skirt, and two support ridges projecting from the underside of the
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements relating to closures for bottles and other containers This invention relates to closures for container and has a particularly useful but not exclusive application in closures for bottles intended to contain liquid carbonated or still beverages. According to this invention there is provided a container closure having a top and a depending peripheral skirt, an internal annular resilient sealing fin extending inwardly from the region of the junction between the top and the skirt, and two support ridges projecting from the underside of the top towards spaced coaxial locations on the sealing fin for urging the fin into sealing engagement with the neck of a container, and passage means operating, when the support rings are in contact with the sealing fin, to cause the annular space between the two support ridges and the annular space between the radially outer support ring and the sealing fin to be subjected to the same pressure as obtains within the container. The sealing fin is preferably inclined inwardly and away from the top of the closure. Preferably also the radially inner support ridge projects further from the top than the outer support ridge. According to a preferred feature of the invention the closure is a one-piece moulded closure, the skirt having an internal screw thread and, above the screw-thread, a shoulder portion adapted to form a seal with an external cylindrical surface of the neck of the container, and the sealing fin has its root in the upper portions of the shoulder so that the shoulder and the fin together envelop said cylindrical surface and the top of the neck of the container. -The lower surface of the sealing fin is preferably formed with concentric annular ribs for engaging the sealing surfaces of the container neck, and the radially inwardly facing surface of the shoulder may also be formed with sealing ribs. The sealing ribs preferably have a saw-tooth configuration when viewed in cross-section, and have the advantage of providing a series of line contacts between the fin and the co-operating sealing surfaces of the container. The ribs may also assist in centring the closure on the neck during application of the closure. - According to a preferred feature of the invention, the top of the closure thickens progressively towards its centre. The skirt of the closure will normally be screwthreaded to engage a corresponding screw-thread provided on the external surface of the neck of a container. Closures in accordance with the present invention are preferably moulded from a plastics material such as polyethylene or polypropylene by injection moulding. The closure may also include a pilferproof sealing ring of a known type extending downwardly from the base of the skirt and adapted to engage with corresponding retaining means on the neck of the container. One embodiment of the present invention will now be des rssed by way of example with reference to the accompanying drawing showing in cross section a closure according to the invention. Referring to the drawing the closure is moulded from a plastics material and comprises a top 10 and a peripheral depending skirt 11. The top 10 increases in thickness progressively towards the lengthwise axis of the closure. The external surface of the skirt is provided with a plurality of longitudinal flutes 13 to provide improved grip for applying and removing the closure. The skirt of the closure has an internal screwthread ridge 14 which in the illustrated construction extends through just over one complete turn of the closure, and above the ridge is formed with an inwardly projecting shoulder 15 extending to the top 10. From the shoulder, at a location near the top a resilient annular sealing fin 16 extends inwardly and downwardly and terminates in an edge 17. In the construction shown the fin is slightly curved in cross-section, the convex face 18 of the fin being nearer the top. The underneath face of the fin and the adjoining surfaces of the shoulder are formed with a series of sealing ribs 19 of saw-tooth form. Two stiff concentric support ridges 20, 21 project from the underside of the top towards the sealing fin, the inner ring 20 projecting to a greater extent than the outer ring 21. The two rings have each four short interruptions 22 in their length, spaced apart at intervals of 90" about the central axis of the closure. When the closure is applied to a bottle, the sealing fin 16 flexes as it comes into engagement with the rim about the mouth of the bottle, and screwing the closure on to the bottle bring the support ridges 20, 21 into contact with the upper surface of the sealing fin to press the ribs on the fin into good sealing engagement with the rim. At the same time the ribs 19 on the shoulder 15 come into sealing engagement with an external cylindrical surface adjoining the rim of the bottle. Since the inner support ridge 20 projects to a greater extent below the top than the outer support ridge 21 the two ridges tend to maintain the sealing fin in an inclined attitude.When the bottle contains a carbonated beverage, the gas pressure within the bottle is transmitted through the interruptions 22 in the lengths of the support ridges to the upper surface of the fin so as to assist in pressing the fin on to the rim of the bottle. The ribs on the shoulder and sealing fin form a series of line-contact sealing zones with the neck of the container and by reason of the support given to the sealing fin by the support ridges the fin can be made more flexible, which also assists in achieving a satisfactory seal while enabling the amount of material in the closure to be reduced, and reducing the torque necessary to tighten the closure. CLAIMS
1. A container closure having a top and a depending peripheral skirt, an internal annular resilient sealing fin extending inwardly from the region of the junction between the top and the skirt, and two support ridges projecting from the underside of the top towards spaced coaxial locations on the sealing fin for urging the fin into sealing engagement with the neck of a container, and passage means operating, when the support rings are in contact with the sealing fin, to cause the annular space between the two support ridges and the annular space between the radially outer support ring and the sealing fin to be subjected to the same pressure as obtains within the container.
2. A closure as claimed in claim 1, wherein the sealing fin is inclined inwardly and away from the top of the closure.
3. A closure as claimed in claim 2, wherein the radially inner support ridge projects further from the top than the outer support ridge.
4. A closure as claimed in any one of claims 1 to 3, wherein the closure is a one-piece moulded closure, the skirt having an internal screw-thread and, above the screw-thread, a shoulder portion adapted to form a seal with an external cylindrical surface of the neck of the container, and the sealing fin has its root in the upper portions of the shoulder so that the shoulder and the fin together envelop said cylindrical surface and the top of the neck of the container.
5. A closure as claimed in claim 4 wherein the lower surface of the sealing fin is formed with concentric annular ribs for engaging the sealing surfaces of the container neck, and the radially inwardly facing surface of the shoulder may also be formed with sealing ribs.
6. A closure as claimed in claim 5, wherein the sealing ribs have a saw-tooth configuration when viewed in cross-section.
GB08313564A 1982-05-17 1983-05-17 Closures for containers Expired GB2120219B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08313564A GB2120219B (en) 1982-05-17 1983-05-17 Closures for containers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8214316 1982-05-17
GB08313564A GB2120219B (en) 1982-05-17 1983-05-17 Closures for containers

Publications (3)

Publication Number Publication Date
GB8313564D0 GB8313564D0 (en) 1983-06-22
GB2120219A true GB2120219A (en) 1983-11-30
GB2120219B GB2120219B (en) 1985-10-02

Family

ID=26282854

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08313564A Expired GB2120219B (en) 1982-05-17 1983-05-17 Closures for containers

Country Status (1)

Country Link
GB (1) GB2120219B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131774A (en) * 1982-12-14 1984-06-27 Metal Closures Group Plc Improvements relating to closures for bottles and other containers
GB2133394A (en) * 1982-12-14 1984-07-25 Metal Closures Group Plc Improvements relating to closures
EP0136088A2 (en) * 1983-08-26 1985-04-03 Metal Closures Limited Improvements relating to container closures
WO1994016962A1 (en) * 1993-01-20 1994-08-04 Alcoa Deutschland Gmbh Verpackungswerke Plastic closure
US5423444A (en) * 1988-06-17 1995-06-13 Mk Plastics Pty Ltd. Linerless closure for carbonated beverage container
US5638972A (en) * 1988-06-17 1997-06-17 Druitt; Rodney Malcolm Linerless closure for carbonated beverage container
GB2311283A (en) * 1996-03-19 1997-09-24 Lawson Mardon Cap for a container
WO1997034812A1 (en) * 1996-03-21 1997-09-25 Lawson Mardon (Sutton) Limited Container cap
WO2000056616A1 (en) * 1999-03-18 2000-09-28 Closures And Packaging Services Limited Closure with seal member
DE4425675C3 (en) * 1994-07-20 2001-02-15 Frank Schellenbach Sealing cap
US6460718B1 (en) * 1997-10-28 2002-10-08 Gateway Plastics Incorporated Container with a threaded cap having a stepped sealing ring with a plurality of narrow sealing surfaces
WO2003022701A1 (en) * 2001-09-10 2003-03-20 Closures And Packaging Services Limited Linerless bore seal closure
US6802428B2 (en) * 2002-02-15 2004-10-12 Phoenix Closures, Inc. Apparatus and method allowing gas flowing into and/or out of container
GB2407561A (en) * 2001-09-10 2005-05-04 Closures & Packaging Serv Ltd Linerless bore seal
US7651004B2 (en) 2005-05-12 2010-01-26 Rexam Closure Systems Inc. Linerless closure and package
EP2521673A1 (en) * 2010-01-06 2012-11-14 Daniel P. Soehnlen Combined lip and shoulder seal for threaded cap
WO2020245050A1 (en) * 2019-06-07 2020-12-10 Creanova Universal Closures Ltd. Closure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO788597A0 (en) 1997-07-14 1997-08-07 Closures And Packaging Services Limited Closure
US6691901B2 (en) 2001-12-14 2004-02-17 Gateway Plastics, Inc. Closure for a container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB935574A (en) * 1961-09-30 1963-08-28 John Peter Hindley Improvements in or relating to closures for fluid containers
GB1539022A (en) * 1975-06-13 1979-01-24 Metal Closures Group Ltd Closures
GB1572960A (en) * 1977-12-05 1980-08-06 Metal Closures Group Ltd Closure for containers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB935574A (en) * 1961-09-30 1963-08-28 John Peter Hindley Improvements in or relating to closures for fluid containers
GB1539022A (en) * 1975-06-13 1979-01-24 Metal Closures Group Ltd Closures
GB1572960A (en) * 1977-12-05 1980-08-06 Metal Closures Group Ltd Closure for containers

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131774A (en) * 1982-12-14 1984-06-27 Metal Closures Group Plc Improvements relating to closures for bottles and other containers
GB2133394A (en) * 1982-12-14 1984-07-25 Metal Closures Group Plc Improvements relating to closures
EP0136088A2 (en) * 1983-08-26 1985-04-03 Metal Closures Limited Improvements relating to container closures
EP0136088A3 (en) * 1983-08-26 1986-08-06 Metal Closures Limited Improvements relating to container closures
EP0293901A1 (en) * 1983-08-26 1988-12-07 Metal Closures Limited Container closure
US5423444A (en) * 1988-06-17 1995-06-13 Mk Plastics Pty Ltd. Linerless closure for carbonated beverage container
US6325228B1 (en) 1988-06-17 2001-12-04 Closures And Packaging Services Limited Linerless closure for carbonated beverage container
US5638972A (en) * 1988-06-17 1997-06-17 Druitt; Rodney Malcolm Linerless closure for carbonated beverage container
US5836464A (en) * 1988-06-17 1998-11-17 Closures And Packaging Services Limited Closure for beverage container
WO1994016962A1 (en) * 1993-01-20 1994-08-04 Alcoa Deutschland Gmbh Verpackungswerke Plastic closure
DE4425675C3 (en) * 1994-07-20 2001-02-15 Frank Schellenbach Sealing cap
GB2311283A (en) * 1996-03-19 1997-09-24 Lawson Mardon Cap for a container
WO1997034812A1 (en) * 1996-03-21 1997-09-25 Lawson Mardon (Sutton) Limited Container cap
US6460718B1 (en) * 1997-10-28 2002-10-08 Gateway Plastics Incorporated Container with a threaded cap having a stepped sealing ring with a plurality of narrow sealing surfaces
US6772894B1 (en) 1999-03-18 2004-08-10 Closures And Packaging Services Limited Closure with seal member
WO2000056616A1 (en) * 1999-03-18 2000-09-28 Closures And Packaging Services Limited Closure with seal member
GB2407561A (en) * 2001-09-10 2005-05-04 Closures & Packaging Serv Ltd Linerless bore seal
GB2393714A (en) * 2001-09-10 2004-04-07 Closures & Packaging Serv Ltd Linerless Bore Seal Closure
GB2393714B (en) * 2001-09-10 2005-01-26 Closures & Packaging Serv Ltd Linerless Bore Seal Closure
WO2003022701A1 (en) * 2001-09-10 2003-03-20 Closures And Packaging Services Limited Linerless bore seal closure
GB2407561B (en) * 2001-09-10 2006-03-08 Closures & Packaging Serv Ltd Linerless bore seal closure
US7503468B2 (en) 2001-09-10 2009-03-17 Closures And Packaging Services Limited Linerless bore seal closure
US7975864B2 (en) 2001-09-10 2011-07-12 Closures And Packaging Services Limited Linerless bore seal closure
US6802428B2 (en) * 2002-02-15 2004-10-12 Phoenix Closures, Inc. Apparatus and method allowing gas flowing into and/or out of container
US7651004B2 (en) 2005-05-12 2010-01-26 Rexam Closure Systems Inc. Linerless closure and package
EP2521673A1 (en) * 2010-01-06 2012-11-14 Daniel P. Soehnlen Combined lip and shoulder seal for threaded cap
WO2020245050A1 (en) * 2019-06-07 2020-12-10 Creanova Universal Closures Ltd. Closure
CN114051479A (en) * 2019-06-07 2022-02-15 克雷诺瓦通用密封有限公司 Closure member

Also Published As

Publication number Publication date
GB8313564D0 (en) 1983-06-22
GB2120219B (en) 1985-10-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee