EP0148222A4 - Kompositverschluss. - Google Patents

Kompositverschluss.

Info

Publication number
EP0148222A4
EP0148222A4 EP19840902499 EP84902499A EP0148222A4 EP 0148222 A4 EP0148222 A4 EP 0148222A4 EP 19840902499 EP19840902499 EP 19840902499 EP 84902499 A EP84902499 A EP 84902499A EP 0148222 A4 EP0148222 A4 EP 0148222A4
Authority
EP
European Patent Office
Prior art keywords
shell
top wall
skirt
gasket
closure
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.)
Withdrawn
Application number
EP19840902499
Other languages
English (en)
French (fr)
Other versions
EP0148222A1 (de
Inventor
Rodney Malcolm Unit Par Druitt
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.)
Bev Cap Plastics Pty Ltd
Original Assignee
Bev Cap Plastics Pty 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 Bev Cap Plastics Pty Ltd filed Critical Bev Cap Plastics Pty Ltd
Publication of EP0148222A1 publication Critical patent/EP0148222A1/de
Publication of EP0148222A4 publication Critical patent/EP0148222A4/de
Withdrawn legal-status Critical Current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
    • B65D41/0435—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)
EP19840902499 1983-06-23 1984-06-22 Kompositverschluss. Withdrawn EP0148222A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPF995283 1983-06-23
AU9952/83 1983-06-23

Publications (2)

Publication Number Publication Date
EP0148222A1 EP0148222A1 (de) 1985-07-17
EP0148222A4 true EP0148222A4 (de) 1987-08-03

Family

ID=3770197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840902499 Withdrawn EP0148222A4 (de) 1983-06-23 1984-06-22 Kompositverschluss.

Country Status (2)

Country Link
EP (1) EP0148222A4 (de)
WO (1) WO1985000153A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938371A (en) * 1989-05-19 1990-07-03 Continental White Cap, Inc. Closure having improved sealant channel for receiving sealant by spin lining
GB9316264D0 (en) * 1993-08-05 1993-09-22 Metal Closures Group Ltd Container closure with liner
MX2007002498A (es) * 2004-09-01 2007-10-10 Creanova Universal Closures Medio de sellado para un cierre, cierre y proceso.
CN101142126A (zh) 2005-03-14 2008-03-12 克雷诺瓦通用密封有限公司 瓶盖
ES2296481B1 (es) * 2005-11-16 2009-02-01 Compañia De Tapones Irrellenables, S.A Tapon roscado estanco para botellas de vino y metodo de cierre con dicho tapon.
EP1981769B1 (de) * 2005-12-28 2012-04-25 Silgan White Cap LLC Kunststoffverschlusskappe mit Dichtung
CN102582927A (zh) * 2012-03-11 2012-07-18 陕西金禾农业科技有限公司 一种双密封瓶盖

Family Cites Families (11)

* Cited by examiner, † Cited by third party
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
BE570550A (de) * 1957-12-09
AU4737468A (en) * 1969-12-02 1971-06-03 Containers Limited Improvements in closures
GB1471109A (en) * 1973-04-12 1977-04-21 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
GR66059B (de) * 1977-01-28 1981-01-14 Continental Group
NL7807901A (nl) * 1978-07-25 1980-01-29 Kornelis Kunsthars Prod Ind Bv Sluitkap uit een thermoplastisch polyalkeenmateriaal voorzien van een indrukbare afdichtingsring uit een kunststofmateriaal voor afdichting van een houder, als- mede samenstel, omvattende de sluitkap en een daarmede afsluitbare houder.
FR2451324B1 (fr) * 1979-03-15 1986-04-04 Alca Sa Bouchon a vis, notamment pour bouteilles de liquides
ZA831232B (en) * 1982-03-10 1983-11-30 Grace W R & Co Screw cap
US4697716A (en) * 1982-07-06 1987-10-06 Owens-Illinois, Inc. Closures with cast sealing gasket
AU1709683A (en) * 1982-07-09 1984-02-08 Metal Closures Group Plc Improvements in closures for screw-threaded containers

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No relevant documents have been disclosed. *
See also references of WO8500153A1 *

Also Published As

Publication number Publication date
WO1985000153A1 (en) 1985-01-17
EP0148222A1 (de) 1985-07-17

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19850716

A4 Supplementary search report drawn up and despatched

Effective date: 19870803

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880223

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DRUITT, RODNEY, MALCOLMUNIT 33, PARKSIDE TOWERS