EP4522701A1 - Inserts d'étanchéité pour bouchons couronnes présentant une épaisseur de feuille de métal réduite - Google Patents

Inserts d'étanchéité pour bouchons couronnes présentant une épaisseur de feuille de métal réduite

Info

Publication number
EP4522701A1
EP4522701A1 EP23724250.8A EP23724250A EP4522701A1 EP 4522701 A1 EP4522701 A1 EP 4522701A1 EP 23724250 A EP23724250 A EP 23724250A EP 4522701 A1 EP4522701 A1 EP 4522701A1
Authority
EP
European Patent Office
Prior art keywords
sealing insert
crown cap
cap according
weight
crown
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.)
Pending
Application number
EP23724250.8A
Other languages
German (de)
English (en)
Inventor
Matthias Kern
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.)
Actega DS GmbH
Original Assignee
Actega DS GmbH
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 Actega DS GmbH filed Critical Actega DS GmbH
Publication of EP4522701A1 publication Critical patent/EP4522701A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
    • 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
    • B65D41/10—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
    • B65D41/12—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps
    • B65D41/125—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps with integral internal sealing means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/32—Properties characterising the ingredient of the composition containing low molecular weight liquid component
    • C08L2207/322—Liquid component is processing oil
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2003/1087—Materials or components characterised by specific uses
    • C09K2003/109—Crown caps
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/02—Inorganic compounds
    • C09K2200/0217—Salts
    • C09K2200/023—Sulfur-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/02—Inorganic compounds
    • C09K2200/0239—Oxides, hydroxides, carbonates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/02—Inorganic compounds
    • C09K2200/0243—Silica-rich compounds, e.g. silicates, cement, glass
    • C09K2200/0252—Clays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/04—Non-macromolecular organic compounds
    • C09K2200/0447—Fats, fatty oils, higher fatty acids or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09K2200/0617—Polyalkenes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0615—Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09K2200/0617—Polyalkenes
    • C09K2200/062—Polyethylene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0642—Copolymers containing at least three different monomers

Definitions

  • Vascular closures made of metal and/or plastic have been known for a long time. They are used in the form of, for example, screw caps, screw caps and crown caps for the tight closure of vessels such as bottles, glasses and the like. Such vessels have an opening that must be closed by the vessel closure. A sufficiently tight closure of the vessel must be ensured in order, on the one hand, to prevent the contents of the vessel from leaking and, on the other hand, to protect the contents of the vessel from the entry of undesirable substances, including gaseous substances such as oxygen, trichloroanisole and others.
  • the necessary tightness is usually achieved by a sealing insert, which consists of a sufficiently strong but also elastic material and is arranged in the vessel closure in such a way that it contacts the mouth of the vessel, when the vascular closure is arranged on the vessel.
  • the sealing insert is usually arranged in a disc-shaped or ring-shaped manner on the inside of the vascular closure. When the vessel is closed, it lies against the mouth of the vessel and is pressed against the mouth by the vessel closure, with its hardness together with its elasticity creating a seal.
  • a good sealing insert compensates for the unevenness of the vessel mouth that is always present. The more uneven the vessel mouth is, the higher the demands placed on the sealing insert.
  • the sealing insert must also meet other requirements; it should be pasteurizable or even sterilizable for many purposes. It should be able to withstand a significant internal pressure (e.g. with carbonated drinks), but should give way in a controlled manner when this pressure is exceeded (overpressure valve effect).
  • the sealing insert must not offer too much resistance to the twisting of the vessel closure on the mouth when opening.
  • the sealing insert must be as inexpensive to produce and attach to the vessel closure as possible. It is known to cut out disc-shaped sealing inserts from sheets or films and then attach them to the vascular closure ("out-shell molding") or, what is often preferred, to introduce them into the vascular closure in a flowable form, form them there and solidify them (“in-shell molding”). In-shell molding also makes it possible to create sealing inserts that are not disk-shaped but ring-shaped.
  • sealing inserts both for screw caps and for caps that can be pry off, such as conventional crown caps
  • polymers that do not contain halogens.
  • These sealing inserts are all “compounds”, i.e. mixtures of one or (usually) several polymers with additives that adapt the properties of the sealing insert to the intended purpose, make it easier to process or use, and the like.
  • Typical polymers in such compounds are thermoplastics, especially polyolefins, thermoplastic elastomers, elastic thermoplastics and synthetic rubbers.
  • Typical additives are plasticizers, oils, lubricants, antioxidants, stabilizers, pigments, fillers and the like.
  • Polymer-based sealing inserts have varying degrees of permeability to foreign substances depending on the choice of components. Such foreign substances can, for example, pass between the sealing insert and the vessel mouth if the sealing insert is not lies optimally at the mouth. They can also be soluble in the material of the sealing insert and diffuse into the vessel.
  • the sealing insert must therefore be optimized in terms of its mechanical properties (particularly hardness and elasticity) and its chemical properties (solubility of foreign substances).
  • a more specific problem that can be solved by means of the invention arises with vessel closures that can be levered off or twisted off, in particular with crown caps.
  • a crown cork made of thinner tinplate with an identical yield strength cannot reliably press the sealing insert inserted into it against the mouth of the vessel with the same force as a conventional crown cork made of thicker sheet metal.
  • this effect can be counteracted by using optimized seals in terms of hardness and elasticity or mechanically improved tinplate with a higher yield strength.
  • Seals with an optimized ratio of hardness and elasticity are just one important component in being able to use thinner tinplate for crown corks.
  • a tinplate with a higher yield strength should be used.
  • tinplate alloys with a yield strength of a maximum of 415 MPa are used for standard crown caps
  • tinplate alloys with a yield strength of 415 to 620 MPa should be used for crown caps with a thickness of 0.18 mm and tinplate with a yield strength of > 620 MPa can be used.
  • the maximum possible yield point or stiffness of a tinplate is determined by the forming process when deep-drawing the crown cork.
  • the thinner ( ⁇ 0.20 mm) tinplates should preferably be produced using the “double reduced” process, otherwise the risk of damage when forming the crown cork (premature cracking) is clear elevated.
  • the hot strip is pickled and then cold rolled.
  • Cold rolling is the first reduction in the thickness of the tinplate.
  • the tinplate must be cooled with water because the rolling process generates heat.
  • the work hardening must then be removed through an annealing process, as the significant reduction in thickness ensures that the tinplate becomes very hard and brittle and would therefore be unsuitable as a packaging material.
  • the cold-rolled tinplate must be degreased.
  • Annealing the tinplate ensures that its formability is restored.
  • the thickness of the tinplate is then further reduced using dry re-rolling without any lubrication or cooling.
  • the “double reduced” material produced in this way enables the production of tinplates that compensate for lower thicknesses with higher strengths.
  • the tinplate is then tinned or chrome-plated for corrosion protection until it is finally conditioned in various packaging sizes.
  • Tinplates for packaging steels and crown corks made from them are specified in accordance with DIN EN 10202 and ENI 7177.
  • the aim of the invention is to create improved closures that can be used not only in general but also for the particularly demanding applications discussed here.
  • Another important object of the invention is to create such crown caps with improved tightness, especially against spurs, even in mass-produced vessels such as beer bottles and the like.
  • One of the objects of the invention is to create such vessel closures with a sealing insert that can be produced using in-shell molding.
  • the sealing insert should be able to be made very soft in order to be able to reliably seal the bottle even in the event of hairline cracks and similar mouth defects. Further objects and advantages of the invention emerge from the description below, including the exemplary embodiments.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

Bouchon couronne pour un récipient destiné à contenir des boissons ou des aliments qui présente une embouchure à fermer avec le bouchon couronne, comportant un insert d'étanchéité disposé dans le bouchon couronne de telle sorte qu'il ferme de manière étanche l'embouchure lorsque le bouchon couronne est monté sur le récipient, le bouchon couronne, comprenant l'insert d'étanchéité, ne contenant aucun matériau contenant des halogènes, la feuille de métal utilisée pour le bouchon couronne présentant une épaisseur comprise entre 0,10 et 0,19 mm. L'insert d'étanchéité contient au moins vingt pour cent en poids, par rapport au poids total de l'insert d'étanchéité, d'au moins un copolymère de styrène triséquencé, de préférence entièrement hydrogéné, en particulier un copolymère styrène-éthylène-butadiène-styrène (SEBS), SEEPS et/ou SEPS, ou un mélange d'au moins deux de ces copolymères.
EP23724250.8A 2022-05-12 2023-05-02 Inserts d'étanchéité pour bouchons couronnes présentant une épaisseur de feuille de métal réduite Pending EP4522701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/EP2022/062996 WO2023217382A1 (fr) 2022-05-12 2022-05-12 Insert d'étanchéité pour capsules couronnes à épaisseur de feuille réduite
PCT/EP2023/061541 WO2023217587A1 (fr) 2022-05-12 2023-05-02 Inserts d'étanchéité pour bouchons couronnes présentant une épaisseur de feuille de métal réduite

Publications (1)

Publication Number Publication Date
EP4522701A1 true EP4522701A1 (fr) 2025-03-19

Family

ID=81927841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23724250.8A Pending EP4522701A1 (fr) 2022-05-12 2023-05-02 Inserts d'étanchéité pour bouchons couronnes présentant une épaisseur de feuille de métal réduite

Country Status (7)

Country Link
US (1) US20250250067A1 (fr)
EP (1) EP4522701A1 (fr)
CN (1) CN119095929A (fr)
AU (1) AU2023267166A1 (fr)
MX (1) MX2024013493A (fr)
WO (2) WO2023217382A1 (fr)
ZA (1) ZA202407663B (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646158B1 (fr) 1991-06-05 1998-10-14 W.R. Grace & Co.-Conn. Composition d'etancheite pour capsule
US5955163A (en) 1991-06-05 1999-09-21 W.R. Grace & Co.-Conn. Gasket composition for crown caps
DE202009018687U1 (de) * 2009-11-20 2012-08-09 Actega Ds Gmbh PVC-freie Dichtungen für Drehkronenkorken ("twist crowns")
CN103509227A (zh) 2013-09-29 2014-01-15 吴江海宏塑料制品有限公司 一种皇冠瓶盖用垫片材料及其制备方法
WO2016138930A1 (fr) 2015-03-02 2016-09-09 Actega Ds Gmbh Dispositif de fermeture de récipient en métal ou en matière plastique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2800337T3 (es) * 2011-05-11 2020-12-29 Actega Ds Gmbh Cierres exentos de PVC
US20160362761A1 (en) * 2014-02-25 2016-12-15 Jfe Steel Corporation Steel sheet for crown cap, method for manufacturing same, and crown cap

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646158B1 (fr) 1991-06-05 1998-10-14 W.R. Grace & Co.-Conn. Composition d'etancheite pour capsule
US5955163A (en) 1991-06-05 1999-09-21 W.R. Grace & Co.-Conn. Gasket composition for crown caps
DE202009018687U1 (de) * 2009-11-20 2012-08-09 Actega Ds Gmbh PVC-freie Dichtungen für Drehkronenkorken ("twist crowns")
CN103509227A (zh) 2013-09-29 2014-01-15 吴江海宏塑料制品有限公司 一种皇冠瓶盖用垫片材料及其制备方法
WO2016138930A1 (fr) 2015-03-02 2016-09-09 Actega Ds Gmbh Dispositif de fermeture de récipient en métal ou en matière plastique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023217587A1

Also Published As

Publication number Publication date
CN119095929A (zh) 2024-12-06
ZA202407663B (en) 2025-10-29
WO2023217382A1 (fr) 2023-11-16
MX2024013493A (es) 2024-12-06
US20250250067A1 (en) 2025-08-07
WO2023217587A1 (fr) 2023-11-16
AU2023267166A1 (en) 2024-11-14

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