EP0481981B1 - Linerless closure for carbonated beverage container - Google Patents
Linerless closure for carbonated beverage container Download PDFInfo
- Publication number
- EP0481981B1 EP0481981B1 EP89907042A EP89907042A EP0481981B1 EP 0481981 B1 EP0481981 B1 EP 0481981B1 EP 89907042 A EP89907042 A EP 89907042A EP 89907042 A EP89907042 A EP 89907042A EP 0481981 B1 EP0481981 B1 EP 0481981B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- closure
- container
- rib
- neck
- skirt
- 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.)
- Expired - Lifetime
Links
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
- B65D41/0428—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
-
- 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
- B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
- B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads
-
- 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
- B65D2401/00—Tamper-indicating means
- B65D2401/15—Tearable part of the closure
Definitions
- the invention relates to a closure for a container having an externally screw threaded neck, said closure being molded in one piece from a resilient plastics material, and comprising a top and a skirt dependent from the top, which skirt has on an internal surface a complementary screw thread, an annular sealing rib disposed radially inward of the skirt projecting downwardly from the top lying adjacent or abutting with the skirt, said rib having a first portion and a second frusto-conical portion extending from said first portion radially inward to terminate in an annular free edge, the free edge of the frusto-conical portion having a diameter that is smaller than the outside diameter of the neck of the container to which the closure is to be attached, such that the neck of the container, during threaded engagement of the closure with the the neck, will be engaged by the frusto-conical portion of the rib.
- Such a closure is known from US-A-3 203 571.
- This closure has a top and a depending cylindrical skirt or sidewall as well as an integral, downwardly extending, annular seal forming flange adjacent the junction of the top and the sidewall.
- the sealing flange comprises an inwardly tapering frusto-conical flange defining a radially inner frusto-conical surface forming a generally V-shaped recess between the flange and the top of the cap.
- the flange may be thickened adjacent the top of the cap in which case a radially outer surface of the flange may have, when seen in cross-section, a nonlinearity between a first frusto-conical surface adjacent the top and a second such surface extending from the termination of the first annular surface to the free edge of the flange. Whether the rib is so thickened or not the flange has only a single radially inner frusto-conical surface extending from the top of the closure to the free edge of the flange.
- the sealing flange Upon being applied to a container the sealing flange is pushed against the top of the closure by contact with the neck of the container. A seal is said to be formed between the free end of the neck of the container and the radially outer side of the sealing flange.
- British Patent GB-A-788 148 is shown a one-piece closure including a continuous lip within the top positioned to engage against the annular end face of the opening and provide a seal between the lip and the free end edge of the container with the lip curling over at its free edge.
- this closure provides a seal only against the free end edge of the container.
- Australian Patent Application AU-B-15456/76 discloses a one-piece closure in which an annular lip extends from the top and engages an inner bore of a container opening so as to curl the free end of the lip in against the bore or inside surface of the opening.
- this closure effective sealing requires that the inside bore of the opening be of accurate and consistent dimensions.
- gas pressure will tend to distort the lip and cause a seal failure.
- Australian Patent Application AU-B-14180/83 describes a closure with two internal sealing structures.
- One of the structures is an annular shaped outer portion shaped to accept the outer peripheral edge of the free end of the container relying upon the pressure generated during the closing of the cap to seal against this outer edge.
- an inner cylindrical lip to engage the inner bore of the container opening.
- the closure of the afore-mentioned type is characterized by said first portion being substantially cylindrical and having an inner surface being substantially cylindrical with an inner diameter being equal to or only slightly larger than an external diameter of the neck of the container, the frusto-conical portion extending from the terminus of the first portion distal to the top, whereby, during threaded engagement of the closure with the neck of the container, the second, frusto-conical portion will be folded back against the inner surface of the first portion of the rib to form a gas-tight seal between at least an external cylindrical surface of the neck of the container and the closure.
- the plastics material is high density polyethylene, low density polyethylene, or polypropylene. Where the container is to be used for gaseous liquids, the plastics material must have a very low porosity to the gas.
- the rib is shaped and sized so that, during the threaded engagement of the closure with the container, the free edge of the rib contacts an inner surface of the top, or the surface of a structure contiguous with the top, before the closure is fully engaged and such that the rib in the region proximal the free edge is pinched between the free end of the neck of the container and the top of the closure, or the structure contiguous with the top of the closure, when the closure is fully engaged with the container.
- first substantially cylindrical and second frusto-conical portions of the lip join at an included angle of at least 90 °.
- the rib is of a thickness tapering from a maximum thickness proximal the top to a minimum thickness at its annular free edge.
- first substantially cylindrical and second frusto-conical portions of the lip smoothly join with an internal radius of from 0.1 mm to 0.5mm, most preferably 0.2mm. It is further preferred that the cross-sectional thickness of the rib proximate the join between the first and second portions is from 0.4mm to 0.8mm, most preferably approximately 0.6mm.
- the first substantially cylindrical portion of the sealing rib joins the top spaced radially inwardly from the skirt so as to define a space of annular cross-section between the rib and skirt.
- the container neck has a standard finish the rib is closely spaced from, or contiguous with, the skirt.
- Fig. 1 shows a cap 1 which is in many aspects a conventional screw top cap for a bottle to be used in containing a carbonated beverage.
- the cap 1 includes a continuous cylindrical sidewall 2 with a thread 3 formed on its interior surface.
- the top end of the cap 1 is closed by a top 4 which joins the skirt 2 in a continuous circular perimeter.
- the top 4 and skirt 2 being formed integrally from high density polyethylene by injection moulding.
- the cap differs from known caps in that it includes an annular rib 6 which extends from the interior surface of the top 4 concentrically of the cap 1, being positioned close to the skirt 2.
- the annular sealing rib 6 includes a first or root portion 7 which extends from the top 4 approximately parallel to the skirt 2 with a second portion 8 extending from the end of the first portion 7 tapering inwardly and away from the side wall 2.
- the cap 1 can be seen in Fig. 2 screwed onto the screw top end 9 of a container not fully shown in the drawing.
- the end 9 of the container is finished with an Alcoa step 10 at the outer periphery of its open end extremity.
- the Alcoa step 10 allows a space between the end 9 of the container and the inner surface of the skirt 2 of the cap 1.
- the size of this annular space is sufficient to allow the second portion 8 of the outer rib 6 to contact the end 9 of the container as the cap 1 is being screwed onto the container, and for the second portion 8 to fold up on itself and against the root portion 7 and structure integral with the top 4.
- the second portion 8 of the sealing rib 6 is deformed by being bent towards the top 4.
- the deformation continues and contact is made between the second portion 8 of the sealing rib 6 and an inner rib 5 which effectively extends the structure of the top 4.
- the inner rib 5 in fact is not essential to the invention and can be dispensed with if the other components are suitably modified so that the end portion 8 contacts the top 4 during this deformation.
- annular gap 12 is formed between the outer rib 6 and the skirt 2, proximate the top 4. This is one means of accommodating the Alcoa step 10 and allowing the necessary movement of the outer rib 6 during application of the cap 1 to a container end 9.
- the dimensions of the outer rib 6, in conjunction with the design shape of the rib 6 and its material of construction, will clearly influence the effectiveness of the cap 1. Not only the sealing effectiveness but also the mouldability, removal torque, reusability and consistency are important.
- the inner radius joining the first and second portions 7 and 8 of the outer rib 6 is 0.2mm, the outer radius 0.5mm and the cross-sectional thickness approximately 0.6mm (slightly tapered for mould removal).
- Fig. 3 has a very much smaller inner rib 5 but is otherwise substantially the same as the embodiment of Fig. 1 and 2.
- the cap is modified (not illustrated) for containers not finished with an Alcoa step.
- the inner diameter at the skirt and the thread dimensions must provide a secure engagement with the container thread.
- the inner dimension of the first portion 7 of the sealing rib 6 is preselected to be equal to, or slightly greater than, the external diameter of the container neck at the opening.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
- The invention relates to a closure for a container having an externally screw threaded neck, said closure being molded in one piece from a resilient plastics material, and comprising a top and a skirt dependent from the top, which skirt has on an internal surface a complementary screw thread, an annular sealing rib disposed radially inward of the skirt projecting downwardly from the top lying adjacent or abutting with the skirt, said rib having a first portion and a second frusto-conical portion extending from said first portion radially inward to terminate in an annular free edge, the free edge of the frusto-conical portion having a diameter that is smaller than the outside diameter of the neck of the container to which the closure is to be attached, such that the neck of the container, during threaded engagement of the closure with the the neck, will be engaged by the frusto-conical portion of the rib.
- Such a closure is known from US-A-3 203 571. This closure has a top and a depending cylindrical skirt or sidewall as well as an integral, downwardly extending, annular seal forming flange adjacent the junction of the top and the sidewall. The sealing flange comprises an inwardly tapering frusto-conical flange defining a radially inner frusto-conical surface forming a generally V-shaped recess between the flange and the top of the cap. The flange may be thickened adjacent the top of the cap in which case a radially outer surface of the flange may have, when seen in cross-section, a nonlinearity between a first frusto-conical surface adjacent the top and a second such surface extending from the termination of the first annular surface to the free edge of the flange. Whether the rib is so thickened or not the flange has only a single radially inner frusto-conical surface extending from the top of the closure to the free edge of the flange. Upon being applied to a container the sealing flange is pushed against the top of the closure by contact with the neck of the container. A seal is said to be formed between the free end of the neck of the container and the radially outer side of the sealing flange.
- In British Patent GB-A-788 148 is shown a one-piece closure including a continuous lip within the top positioned to engage against the annular end face of the opening and provide a seal between the lip and the free end edge of the container with the lip curling over at its free edge. However, this closure provides a seal only against the free end edge of the container.
- Australian Patent Application AU-B-15456/76 discloses a one-piece closure in which an annular lip extends from the top and engages an inner bore of a container opening so as to curl the free end of the lip in against the bore or inside surface of the opening. However, with this closure effective sealing requires that the inside bore of the opening be of accurate and consistent dimensions. Furthermore, if aerated or other gaseous liquid is to be contained, gas pressure will tend to distort the lip and cause a seal failure.
- Australian Patent Application AU-B-14180/83 describes a closure with two internal sealing structures. One of the structures is an annular shaped outer portion shaped to accept the outer peripheral edge of the free end of the container relying upon the pressure generated during the closing of the cap to seal against this outer edge. Further provided is an inner cylindrical lip to engage the inner bore of the container opening.
- It is the object of the present invention to provide a closure for a container of the above type which seals the container particularly effectively.
- For the accomplishment of this object, the closure of the afore-mentioned type is characterized by said first portion being substantially cylindrical and having an inner surface being substantially cylindrical with an inner diameter being equal to or only slightly larger than an external diameter of the neck of the container, the frusto-conical portion extending from the terminus of the first portion distal to the top, whereby, during threaded engagement of the closure with the neck of the container, the second, frusto-conical portion will be folded back against the inner surface of the first portion of the rib to form a gas-tight seal between at least an external cylindrical surface of the neck of the container and the closure.
- Preferably the plastics material is high density polyethylene, low density polyethylene, or polypropylene. Where the container is to be used for gaseous liquids, the plastics material must have a very low porosity to the gas. Preferably the rib is shaped and sized so that, during the threaded engagement of the closure with the container, the free edge of the rib contacts an inner surface of the top, or the surface of a structure contiguous with the top, before the closure is fully engaged and such that the rib in the region proximal the free edge is pinched between the free end of the neck of the container and the top of the closure, or the structure contiguous with the top of the closure, when the closure is fully engaged with the container.
- Preferably the first substantially cylindrical and second frusto-conical portions of the lip join at an included angle of at least 90 °. It is also preferred that the rib is of a thickness tapering from a maximum thickness proximal the top to a minimum thickness at its annular free edge.
- It is also preferred that the first substantially cylindrical and second frusto-conical portions of the lip smoothly join with an internal radius of from 0.1 mm to 0.5mm, most preferably 0.2mm. It is further preferred that the cross-sectional thickness of the rib proximate the join between the first and second portions is from 0.4mm to 0.8mm, most preferably approximately 0.6mm.
- Where the closure is adapted to seal a container with an Alcoa step finish, the first substantially cylindrical portion of the sealing rib joins the top spaced radially inwardly from the skirt so as to define a space of annular cross-section between the rib and skirt. Where the container neck has a standard finish the rib is closely spaced from, or contiguous with, the skirt.
- An exemplary embodiment of the invention will now be described with reference to the drawings which show:
- Fig. 1 an embodiment of the present invention in sectioned elevation;
- Fig. 2 the embodiment of Fig. 1 screwed onto a suitable container shown in sectional elevation;
- and Fig. 3 an alternative embodiment in sectional elevation.
- Fig. 1 shows a cap 1 which is in many aspects a conventional screw top cap for a bottle to be used in containing a carbonated beverage. The cap 1 includes a continuous
cylindrical sidewall 2 with athread 3 formed on its interior surface. The top end of the cap 1 is closed by atop 4 which joins theskirt 2 in a continuous circular perimeter. The top 4 andskirt 2 being formed integrally from high density polyethylene by injection moulding. - The cap differs from known caps in that it includes an
annular rib 6 which extends from the interior surface of thetop 4 concentrically of the cap 1, being positioned close to theskirt 2. Theannular sealing rib 6 includes a first orroot portion 7 which extends from thetop 4 approximately parallel to theskirt 2 with asecond portion 8 extending from the end of thefirst portion 7 tapering inwardly and away from theside wall 2. - The cap 1 can be seen in Fig. 2 screwed onto the screw top end 9 of a container not fully shown in the drawing. The end 9 of the container is finished with an Alcoa
step 10 at the outer periphery of its open end extremity. The Alcoastep 10 allows a space between the end 9 of the container and the inner surface of theskirt 2 of the cap 1. The size of this annular space is sufficient to allow thesecond portion 8 of theouter rib 6 to contact the end 9 of the container as the cap 1 is being screwed onto the container, and for thesecond portion 8 to fold up on itself and against theroot portion 7 and structure integral with thetop 4. Thus there is formed a continuous gas tight seal between the cap 1 and the container extending from the Alcoastep 10 to the end surface of the container. There is no need of a separate seal inserted into the cap 1 prior to its application to the container as is common in the art. - As the cap 1 is attached in the above described manner, the
second portion 8 of the sealingrib 6 is deformed by being bent towards thetop 4. The deformation continues and contact is made between thesecond portion 8 of the sealingrib 6 and aninner rib 5 which effectively extends the structure of thetop 4. Theinner rib 5 in fact is not essential to the invention and can be dispensed with if the other components are suitably modified so that theend portion 8 contacts thetop 4 during this deformation. - Once the
second portion 8 has contacted the inner rib 5 (or top 4) further movement attaching the cap 1 will press and grip the contacting part of thesecond portion 8 between the container end 9 and thetop 4. As the movement attaching the cap 1 continues, it tends to pinch the free edge ofrib 6 between the container and thetop 4 and to "pull" thefirst portion 7 of the outer rib tightly in towards the container end 9 to produce a tight seal about the curved edge surface of the container end 9 extending from its extreme end annular surface 11 to the Alcoastep region 10. - In the preferred embodiment shown in the drawings, an
annular gap 12 is formed between theouter rib 6 and theskirt 2, proximate thetop 4. This is one means of accommodating the Alcoastep 10 and allowing the necessary movement of theouter rib 6 during application of the cap 1 to a container end 9. - The dimensions of the
outer rib 6, in conjunction with the design shape of therib 6 and its material of construction, will clearly influence the effectiveness of the cap 1. Not only the sealing effectiveness but also the mouldability, removal torque, reusability and consistency are important. For the high density polyethelene cap shown in the drawings, the inner radius joining the first andsecond portions outer rib 6 is 0.2mm, the outer radius 0.5mm and the cross-sectional thickness approximately 0.6mm (slightly tapered for mould removal). - The alternative embodiment of Fig. 3 has a very much smaller
inner rib 5 but is otherwise substantially the same as the embodiment of Fig. 1 and 2. - The cap is modified (not illustrated) for containers not finished with an Alcoa step. Importantly, the inner diameter at the skirt and the thread dimensions must provide a secure engagement with the container thread. Further the inner dimension of the
first portion 7 of the sealingrib 6 is preselected to be equal to, or slightly greater than, the external diameter of the container neck at the opening. Some radial flex should be provided in the sealingrib 6 so that on application of the cap to the container thesecond portion 8 can uniformly bend back onto thefirst portion 7.
Claims (12)
characterized by
said first portion (7) being substantially cylindrical and having an inner surface being substantially cylindrical with an inner diameter being equal to or only slightly larger than an external diameter of the neck of the container (9), the frusto-conical portion (8) extending from the terminus of the first portion (7) distal to the top (4), whereby, during threaded engagement of the closure (1) with the neck of the container (9), the second frusto-conical portion (8) will be folded back against the inner surface of the first portion (7) of the rib (6) to form a gas-tight seal between at least an external cylindrical surface of the neck of the container (9) and the closure (1).
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU884688 | 1988-06-17 | ||
AUPI884688 | 1988-06-17 | ||
AU8846/88 | 1988-06-17 | ||
PCT/AU1989/000256 WO1989012584A1 (en) | 1988-06-17 | 1989-06-15 | Linerless closure for carbonated beverage container |
AU37737/89A AU627746B2 (en) | 1988-06-17 | 1989-06-15 | Linerless closure for carbonated beverage container |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0481981A4 EP0481981A4 (en) | 1991-03-06 |
EP0481981A1 EP0481981A1 (en) | 1992-04-29 |
EP0481981B1 true EP0481981B1 (en) | 1994-08-31 |
EP0481981B2 EP0481981B2 (en) | 1999-11-17 |
Family
ID=25624087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89907042A Expired - Lifetime EP0481981B2 (en) | 1988-06-17 | 1989-06-15 | Linerless closure for carbonated beverage container |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0481981B2 (en) |
WO (1) | WO1989012584A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5638972A (en) * | 1988-06-17 | 1997-06-17 | Druitt; Rodney Malcolm | Linerless closure for carbonated beverage container |
EP0460813A3 (en) * | 1990-05-25 | 1992-03-11 | Tredegar Molded Products Company | Threaded closure with integral sealing means |
ES2048060B1 (en) * | 1991-10-01 | 1995-07-01 | Druitt Titular Del 50 Rodney M | LID WITHOUT INTERIOR COATING FOR CARBONIC BEVERAGE CONTAINER. |
EG21314A (en) * | 1992-07-16 | 2000-10-31 | Driutt Rodney Malcolm | Tamper evident closure |
FR2710325B1 (en) | 1993-09-22 | 1995-12-08 | Jacques Perchepied | Screw cap. |
SE501925C2 (en) * | 1993-09-24 | 1995-06-19 | Kabi Pharmacia Ab | Containers for medical fluids and procedures for their sealing |
NL9402151A (en) * | 1994-12-19 | 1996-08-01 | Johannes Antonius Maria Van Cr | Combination of a bottle and a cap as well as a bottle and cap intended for this combination. |
CN101044065B (en) * | 2004-09-01 | 2013-02-13 | 克雷诺瓦通用密封有限公司 | Closure |
AU2005331483B2 (en) | 2004-09-01 | 2012-02-16 | Creanova Universal Closures Ltd. | Sealing means for a closure, closure and process |
EP1879807A2 (en) | 2005-03-14 | 2008-01-23 | Creanova Universal Closures Ltd. | Closure |
WO2012095501A1 (en) | 2011-01-14 | 2012-07-19 | Creanova Universal Closures Ltd. | Closure |
US10532858B2 (en) | 2017-09-06 | 2020-01-14 | Creanova Universal Closures Ltd. | Closure for container neck finishes |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3203571A (en) * | 1960-12-06 | 1965-08-31 | Robert L Plunkett | Self sealing cap construction |
US3200981A (en) † | 1961-10-03 | 1965-08-17 | Wicanders Korkfabriker Ab | Bottle caps |
US3405830A (en) † | 1965-10-23 | 1968-10-15 | Hayashida Kouichi | Bottle-stopper |
US3478911A (en) † | 1967-12-22 | 1969-11-18 | Reflex Corp Canada Ltd | Safety cap and container |
FR2085289B2 (en) † | 1970-02-18 | 1974-10-11 | Wassilieff Victor | |
GB1499895A (en) * | 1974-06-07 | 1978-02-01 | Mack Wayne Plastics Co | Container and cap combination |
AU501052B2 (en) † | 1974-10-02 | 1979-06-07 | Te. Chill Search Limited | Two-to-four wire converter |
FR2391926A2 (en) * | 1976-02-03 | 1978-12-22 | Grussen Jean | IMPROVED SEALING SCREW CAPSULE AND MANUFACTURING MOLD |
US4069937A (en) * | 1977-01-28 | 1978-01-24 | Owens-Illinois, Inc. | Linerless closure |
US4349116A (en) † | 1978-12-07 | 1982-09-14 | Ethyl Products Company | Thermoplastic screw-threaded closure cap |
US4398645A (en) † | 1981-06-29 | 1983-08-16 | Thurston Toeppen | Closure for pressurized containers |
US4450973A (en) * | 1982-09-28 | 1984-05-29 | Thurston Toeppen | Closure for pressurized containers |
EP0109631A3 (en) * | 1982-11-17 | 1985-07-31 | Walter Wiedmer | Thread closure of elastic material for a container |
IE55655B1 (en) † | 1983-08-26 | 1990-12-05 | Metal Closures Ltd | Closures |
GB8328954D0 (en) † | 1983-10-29 | 1983-11-30 | Metal Box Plc | One-piece plastics closure |
-
1989
- 1989-06-15 EP EP89907042A patent/EP0481981B2/en not_active Expired - Lifetime
- 1989-06-15 WO PCT/AU1989/000256 patent/WO1989012584A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0481981B2 (en) | 1999-11-17 |
EP0481981A4 (en) | 1991-03-06 |
WO1989012584A1 (en) | 1989-12-28 |
EP0481981A1 (en) | 1992-04-29 |
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