WO1985000153A1 - Compounded closure - Google Patents
Compounded closure Download PDFInfo
- Publication number
- WO1985000153A1 WO1985000153A1 PCT/AU1984/000113 AU8400113W WO8500153A1 WO 1985000153 A1 WO1985000153 A1 WO 1985000153A1 AU 8400113 W AU8400113 W AU 8400113W WO 8500153 A1 WO8500153 A1 WO 8500153A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shell
- top wall
- skirt
- gasket
- closure
- Prior art date
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
- B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
- B65D41/0442—Collars or rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
- B29C70/80—Moulding sealing material into closure members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
- B05D1/005—Spin coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
- B29C41/045—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the axis being placed vertically, e.g. spin casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/08—Copolymers of ethylene
- B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
Definitions
- the present invention relates to the field of closures and in particular to thermoplastic closures having an internally threaded skirt and adapted to seal containers with contents at superatmos- pheric pressure such as,for example, carbonated beverages.
- closures are commonly manufactured of relatively inflexible plastics in order to achieve the desired resistence to deformation under pressure they commonly additionally incorporate resiliently deformable gaskets flowed onto that area of the closure intended to abut against the neck of a container thus effecting a seal.
- a compounded closure as las.mentioned has the advantage that the gasket may deform so as to take up manufacturing variations commonly encountered with containers whilst the structural integrity of the closure as a whole is ensured by the relatively rigid nature of the thermoplastic shell.
- thermo ⁇ plastic shell for a compounded closure having a circular top wall and an annular internally threaded skirt,an annular inwardly directed protrusion from the inner wall of the skirt below the intersection of said skirt with the closure top wall adapted to receive a flowed in gasket and, as the closure is screwed into place upon a container, to urge such gasket against the outside wall of the neck of such container thereby effecting a side seal.
- the present invention also discloses a method of distributing EVA solution in a closure in accordance with the present invention in order that such compounded closure may conrounicate with a container and effect a side seal thereon.
- Figure(i) is a part radial sectional view of a closure in accord ⁇ ance with the present invention in sealing relationship with the neck of a container.
- Figure 1 depicts a closure having a circular top wall (1) and an annular skirt (2) depending therefrom and provided with internal threads (3) adapted to comrnunicate with a threaded bottle neck (4).
- the circular top wall of the closure (1) is relieved at (5) so as to be relatively thin walled ⁇ -adjacenfe ⁇ __gea.- 6.)...Thi_ -th___- ⁇ .bein concentric with and inboard of the peripheryof top wall (1) acts as a hinge allowing the central portion of tne top wall of the closure to dome with minimum effect upon the top seal between the flowed in gasket (8) and the container neck at (9). If the top wall of the closure were not relieved adjacent (5) then hinging may occur at the intersection (7) of the top wall and skirt with attendant deterioration in the top seal at area (9).
- the closure in figure (1) additionally depicts a radially in ⁇ wardly directed annular bead (10) with an undercut at (11) adjacent the intersection of the inner surfaces of the top wall and the annular skirt.
- This undercut in conjunction with opposing undercut (12) in the annular lip (13) depending from the inside surface of top wall (1), mechanically restrains gasket (8) from downward axial
- annular inwardly directed protrusion from the inner wall of the sKirt is depicted at (15) ana it will be observed ttiat this is located sufficiently below tne intersection of the top wall and tne skirt in order that during application of the closure it may urge gasket material in area (17) against tne outside wall of the con ⁇ tainer neck adjacent area (16) in order to provide a side seal.
- the gasket (8) is formed- from a metred quantity (about 280 mg for a cap to suit a glass closure of 18mm bore diameter) of EVA flowed onto the cap in the area adjacent undercut (12) whilst the cap is being spun preferably between 1,300 and 1,500RPM. Centrifugal force ensures migration of EVA solution radially outward from undercut (12) over ribs (14) undercut (8) flange (10) and up to
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPF9952 | 1983-06-23 | ||
AUPF995283 | 1983-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1985000153A1 true WO1985000153A1 (en) | 1985-01-17 |
Family
ID=3770197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1984/000113 WO1985000153A1 (en) | 1983-06-23 | 1984-06-22 | Compounded closure |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0148222A4 (en) |
WO (1) | WO1985000153A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0398528A2 (en) * | 1989-05-19 | 1990-11-22 | Continental White Cap, Inc. | Closure having improved sealant channel for receiving sealant by spin lining |
EP0637550A2 (en) * | 1993-08-05 | 1995-02-08 | Mcg Closures Limited | Profiled liner for container closure |
WO2006117024A1 (en) * | 2004-09-01 | 2006-11-09 | Creanova Universal Closures Ltd. | Sealing means for a closure, closure and process |
WO2007076526A3 (en) * | 2005-12-28 | 2008-03-13 | Silgan White Cap Americas Llc | Retortable package with plastic closure cap |
ES2296481A1 (en) * | 2005-11-16 | 2008-04-16 | Compañia De Tapones Irrellenables, S.A | Air-tight stopper screw for wine bottles, has external body or capsule, internal body and threaded deformable disc inside threaded body, and distance between thread lead fillets to backlash allows vertical displacement of cap |
CN102582927A (en) * | 2012-03-11 | 2012-07-18 | 陕西金禾农业科技有限公司 | Dual-seal bottle cap |
US8393483B2 (en) | 2004-09-01 | 2013-03-12 | Creanova Universal Closure Ltd. | Sealing means for closure with multiple sealing areas |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1956012A (en) * | 1930-10-10 | 1934-04-24 | Dewey And Almy Chem Comp | Method of making alpha receptacle closure |
US3032826A (en) * | 1957-12-09 | 1962-05-08 | Grace W R & Co | Crown closures |
AU4737468A (en) * | 1969-12-02 | 1971-06-03 | Containers Limited | Improvements in closures |
US3883025A (en) * | 1973-04-12 | 1975-05-13 | Grace W R & Co | Gaskets for container closures |
US4085186A (en) * | 1975-12-05 | 1978-04-18 | Cpl Corporation | Process for producing flow-in closure sealing gaskets from hot melt compositions |
FR2451324A1 (en) * | 1979-03-15 | 1980-10-10 | Alca Sa | Thermo-plastics plug for screwed bottle top - has integral flexible annular lip extending into recess accommodating cast joint |
US4244481A (en) * | 1978-07-25 | 1981-01-13 | Kornelis' Kunsthars Producten Industrie Bv | Closure cap with sealing ring |
GB1592222A (en) * | 1977-01-28 | 1981-07-01 | Continental Group | Method of forming plastisol gaskets in container closures fabricated from polyolefin resins |
AU1187083A (en) * | 1982-03-10 | 1983-09-15 | W.R. Grace & Co. | Sealing screw cap |
AU1709683A (en) * | 1982-07-09 | 1984-02-08 | Metal Closures Group Plc | Improvements in closures for screw-threaded containers |
AU1632083A (en) * | 1982-07-06 | 1984-07-05 | Owens-Illinois Closure Inc. | Closure |
-
1984
- 1984-06-22 WO PCT/AU1984/000113 patent/WO1985000153A1/en not_active Application Discontinuation
- 1984-06-22 EP EP19840902499 patent/EP0148222A4/en not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1956012A (en) * | 1930-10-10 | 1934-04-24 | Dewey And Almy Chem Comp | Method of making alpha receptacle closure |
US3032826A (en) * | 1957-12-09 | 1962-05-08 | Grace W R & Co | Crown closures |
AU4737468A (en) * | 1969-12-02 | 1971-06-03 | Containers Limited | Improvements in closures |
US3883025A (en) * | 1973-04-12 | 1975-05-13 | Grace W R & Co | Gaskets for container closures |
US4085186A (en) * | 1975-12-05 | 1978-04-18 | Cpl Corporation | Process for producing flow-in closure sealing gaskets from hot melt compositions |
GB1592222A (en) * | 1977-01-28 | 1981-07-01 | Continental Group | Method of forming plastisol gaskets in container closures fabricated from polyolefin resins |
US4244481A (en) * | 1978-07-25 | 1981-01-13 | Kornelis' Kunsthars Producten Industrie Bv | Closure cap with sealing ring |
US4244481B1 (en) * | 1978-07-25 | 1984-09-11 | ||
FR2451324A1 (en) * | 1979-03-15 | 1980-10-10 | Alca Sa | Thermo-plastics plug for screwed bottle top - has integral flexible annular lip extending into recess accommodating cast joint |
AU1187083A (en) * | 1982-03-10 | 1983-09-15 | W.R. Grace & Co. | Sealing screw cap |
AU1632083A (en) * | 1982-07-06 | 1984-07-05 | Owens-Illinois Closure Inc. | Closure |
AU1709683A (en) * | 1982-07-09 | 1984-02-08 | Metal Closures Group Plc | Improvements in closures for screw-threaded containers |
Non-Patent Citations (1)
Title |
---|
See also references of EP0148222A4 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0398528A2 (en) * | 1989-05-19 | 1990-11-22 | Continental White Cap, Inc. | Closure having improved sealant channel for receiving sealant by spin lining |
EP0398528A3 (en) * | 1989-05-19 | 1991-03-06 | Continental White Cap, Inc. | Closure having improved sealant channel for receiving sealant by spin lining |
EP0637550A2 (en) * | 1993-08-05 | 1995-02-08 | Mcg Closures Limited | Profiled liner for container closure |
EP0637550A3 (en) * | 1993-08-05 | 1995-07-19 | Metal Closures Group Ltd | Profiled liner for container closure. |
WO2006117024A1 (en) * | 2004-09-01 | 2006-11-09 | Creanova Universal Closures Ltd. | Sealing means for a closure, closure and process |
EA009267B1 (en) * | 2004-09-01 | 2007-12-28 | Креанова Юниверсал Клоужес Лтд. | Sealing means for a closure, closure and process |
US8393483B2 (en) | 2004-09-01 | 2013-03-12 | Creanova Universal Closure Ltd. | Sealing means for closure with multiple sealing areas |
ES2296481A1 (en) * | 2005-11-16 | 2008-04-16 | Compañia De Tapones Irrellenables, S.A | Air-tight stopper screw for wine bottles, has external body or capsule, internal body and threaded deformable disc inside threaded body, and distance between thread lead fillets to backlash allows vertical displacement of cap |
WO2007076526A3 (en) * | 2005-12-28 | 2008-03-13 | Silgan White Cap Americas Llc | Retortable package with plastic closure cap |
CN102582927A (en) * | 2012-03-11 | 2012-07-18 | 陕西金禾农业科技有限公司 | Dual-seal bottle cap |
Also Published As
Publication number | Publication date |
---|---|
EP0148222A4 (en) | 1987-08-03 |
EP0148222A1 (en) | 1985-07-17 |
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