EP3269660B1 - Stopfen für getränkebehälter - Google Patents

Stopfen für getränkebehälter Download PDF

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Publication number
EP3269660B1
EP3269660B1 EP16178774.2A EP16178774A EP3269660B1 EP 3269660 B1 EP3269660 B1 EP 3269660B1 EP 16178774 A EP16178774 A EP 16178774A EP 3269660 B1 EP3269660 B1 EP 3269660B1
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EP
European Patent Office
Prior art keywords
stopper
percentage
screen
shaped element
weight ranging
Prior art date
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Application number
EP16178774.2A
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English (en)
French (fr)
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EP3269660A1 (de
Inventor
Alessandro Dal Bo
Paolo Ragone
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.)
Greencork Srl
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Greencork Srl
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Publication date
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Priority to EP16178774.2A priority Critical patent/EP3269660B1/de
Publication of EP3269660A1 publication Critical patent/EP3269660A1/de
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Publication of EP3269660B1 publication Critical patent/EP3269660B1/de
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    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/0052—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in more than one piece
    • B65D39/0058—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in more than one piece from natural or synthetic cork, e.g. for wine bottles or the like

Definitions

  • the present invention relates to a stopper for beverage containers according to the preamble of claim 1, in particular alcoholic beverages, which meets the requirements of some DOCG specifications as regards wine bottling.
  • stoppers are used which, depending on the constructive approaches and needs, are distinguished in stoppers made up of cork or plastic, caps or crown stoppers.
  • the present invention turns to, in particular, the first type of stoppers which was just mentioned, i.e. to the stoppers the extraction of which from the bottle occurs by means of corkscrews, as the stoppers made up of cork or plastic.
  • Such known stoppers comprise a shaped body, in general having a cylindrical shape, completely made up of cork or in plastic material or in an appropriate combination thereof.
  • stoppers made up of only cork have several disadvantages which may adversely affect the conservation of the wine or even modify its taste or its other organoleptic qualities. In fact, it is possible that the contamination by mould or fungi would give to the wine the characteristic taste "of cork".
  • the completely synthetic stoppers are, instead, made up of a mix of thermoplastic petroleum-derived materials, called elastomers, which are aggregated by an injection moulding process.
  • the synthetic stoppers have good properties since they do not crumble, they are not dusty, they cannot be attacked by moulds or bacteria, offer an excellent and long lasting barrier to the oxygen preserving over time the organoleptic qualities of the liquid which is contained in the bottle and, furthermore, they are totally immune to any type of transfer.
  • the synthetic stoppers insert in the neck of the bottle by the common automatic corking machines which are used for the stoppers made up of cork, so as they can be extracted by a traditional corkscrews.
  • the synthetic stoppers may anyway be customized by producing them in the desired colour and with ink-prints marked, e.g., with the trademark of the producer.
  • the synthetic stoppers are preferable to the stoppers made up of cork, as now widely recognised by many producers and oenologists.
  • the stopper made up of cork allows a minimum of aeration, which is natural and valuable, because allows the ageing wines acquiring, by slowly oxidising, all the organoleptic qualities required in this type of valuable wine.
  • stoppers were proposed which, although being mainly made up of cork, comprise also parts in plastic material.
  • the stoppers for bottles, so to speak, composite are products according to various embodiments, one of which provides a shaped body, having a shape substantially cylindrical, made up of cork, to which a laminar element is applied from top and/or from bottom, having a minimum thickness, made up of plastic material.
  • the laminar elements are produced by injection moulding performed in a separate mould and distinct from the one used far the shaped body, to which the laminar elements are coupled by interposition by junction means, typically adhesive substances.
  • junction means typically adhesive substances.
  • stoppers Another problem in such stoppers comes from the fact that, with a view to avoid mistrust of the insiders relating to the quality of the wine enclosed in the bottles trying, however, and introducing the exclusive advantages of the synthetic stoppers, we end up with obtaining a final product which is spurious, and does not completely please the operators involved.
  • EP 2.657.148 discloses a cork based closure having the features of the preamble of the independent claim.
  • the present invention aims overcome the problems of the known art just mentioned.
  • the primary purpose of the invention is developing a stopper having a structure simpler in respect with stoppers of known type.
  • a purpose of the invention is making available a stopper of the said type which is realizable more quickly than the known art.
  • Another purpose of the invention is realizing a stopper that, although being apparently a stopper made up of cork which, thus, keeps in the eyes of the insiders a positive image, has better values than the ones of the known art in some properties, consequences of providing parts in composite material.
  • the invention aims to realize a stopper in composite material that, in respect with similar known stoppers, has a greater ability to avoid dust, a lower transfer to the liquid contained in the bottle, a more effective barrier to the oxygen, a lower crumbling and a greater ability to resist against attacks by moulds or bacteria.
  • the stopper of the invention allows simplify the operations necessary for its production.
  • the stopper of the invention is obtained more rapidly in respect with known equivalent stoppers, in respect to which the stopper of the invention has better technical characteristics on account of the fact of providing a lower percentage of plastic material.
  • the stopper of the invention comprises a shaped element suitable for being associated to a container for its closure and an insert in composite material, associated with the shaped element, wherein the insert has at least one anchor stem and a screen, and the shaped element has at least a channel, communicating with at least one of the external surfaces of the shaped element, wherein such anchor stem can be inserted; the screen acts as protection for the external surface of such shaped element.
  • the invention consists in the fact that the screen of the insert has a side facing to the external surface of the shaped element and a protruding element on such side (for sides it is meant the two faces of the screen) and that such external surface of the shaped element has a slot, having a shape corresponding to that of such protruding element, so that the clutch between the insert and the shaped element has less leak.
  • the screen in detail, protects the beverage from possible contacts with the shaped element, that could transfer and transmit to it moulds or bacteria.
  • the channel linearly develops along a longitudinal axis, allowing an easy insertion of the anchor stem within it. Furthermore, the longitudinal axis is preferably placed in a central zone of the shaped element.
  • the anchor stem and the screen are in a single piece with each other, in order to speed up and simplify the production of the stopper.
  • the material of the anchor stem and of the screen comprises sterilized cork powder and a thermoplastic compound based on SBS and/or SEBS.
  • the material comprises a plasticizing agent in a percentage by weight ranging between 5 and 27%.
  • the anchor stem and the screen of the invention are realized in a material easily formable, especially during the productive stage.
  • thermoplastic compound of the material may comprise a blowing agent in a percentage by weight ranging between the 3 and the 40% of the total weight of the material.
  • a blowing agent in a percentage by weight ranging between the 3 and the 40% of the total weight of the material.
  • thermoplastic compound of the material may comprise polypropylene in a percentage by weight ranging between 2 and 24% of the total weight of the material.
  • thermoplastic compound of the material may comprise EVA in a percentage by weight ranging between 20 and 60% of the total weight of the material.
  • thermoplastic compound of the material comprises SEBS in a percentage by weight ranging between 5 and 15% of the total weight of the material is preferable.
  • pharmacological paraffinic oil is possible, so that the material obtained is suitable for the food contact.
  • pharmacological paraffinic oil in a percentage by weight ranging between 5 and 15% of the total weight of the material is possible.
  • an advantage of the invention is due to the cylindrical shape of the shaped element, able to adapt to most of the bottles on the market.
  • the shaped element is coated with a thin lubricating layer, which facilitates the insertion and extracting of the stopper into or from the container.
  • such lubricating layer may be a plasto-silico-paraffinic preparation.
  • the stopper preferably but not necessarily proper to being applied to bottles of alcoholic beverages, as e.g. wine, spirit and the like, is depicted in a first embodiment in the figures 1 and 2 , and in a second embodiment in the figures 5 and 6 , wherein it is globally numbered with 10, respectively in cross section along the line B-B and in longitudinal section along the line A-A.
  • the stopper 10 comprises a shaped cylinder 2, suitable for being associated to a container, as e.g. the above said bottle, for its closure, and an insert 3, in composite material, coupled to the bottom of the shaped cylinder 2.
  • the shaped cylinder 2 has a channel 4, equipped with a first end 5, a dead end, and with a second end 6, communicating with the external surface of the shaped cylinder 2.
  • the insert 3 comprises one anchor stem 7, placed inside the channel 4, and a screen 8, a protection for the external surface of the shaped cylinder 2, both in composite material.
  • the channel 4 linearly develops along a longitudinal axis Y and, preferably, is placed in the central zone 1 of the shaped cylinder 2, symmetrically in relation to the same longitudinal axis Y.
  • the shaped cylinder may have a circular channel, filled with one anchor stem in composite material having a hollow cylindrical shape.
  • the stopper 20 comprises a shaped cylinder 22, suitable for being associated to a container, as e.g. the above said bottle, for its closure, and an insert 23, in composite material, coupled at the bottom of the shaped cylinder 22.
  • the shaped cylinder 22 has a circular channel 24, equipped with a first end 25, a dead end, and with a second end 26, communicating with the external surface of the shaped cylinder 22.
  • the insert 23 comprises one anchor stem 27, placed inside the channel 24, and a screen 28, a protection for the external surface of the shaped cylinder 22, both in composite material.
  • the channel 24 circularly extends around the axis Y and, preferably, is placed in the central zone 21 of the shaped cylinder 22, symmetrically in relation to the same longitudinal axis Y.
  • the shaped cylinder may have more than a single channel, each filled with one anchor stem in composite material, e.g. two channels, not visible from the outside.
  • the peculiarity of the stopper 10, 20 according to the invention is also in the fact that the anchor stem 7, 27 and the screen 8, 28 are in a single piece with each other.
  • the anchor stem 7, 27 and the screen 8, 28 are realized according to the following steps:
  • the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention comprises a thermoplastic compound based on Styrene-Butylene-Styrene SBS) or Styrene-Ethylene-Butylene-Styrene (SEBS) in a percentage by weight ranging between 58% and 92% , adding to a sterilized cork powder, with a particle size ranging between 0,6 and 1,2 mm.
  • the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention is realized through an extrusion or hot pressing process, using a transparent plastifying agent of pharmacological type.
  • the percentage by weight of the cork contained may vary, and is comprised in a range between 32% and 72%, preferably between 58% and 62%.
  • a blowing agent may be added to the thermoplastic compound based on SEBS or SBS, in a percentage of the total weight of the material ranging between 3% and 14%.
  • the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention may be advantageously produced in three shades of beige and in respective possible variants of such shades.
  • the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention, to which a quantity of blowing agent equal to the 3-14% of its weight is added, is subjected to a chemical expansion process, subsequent to which reaches a final density ranging between 0,5 g/cm 3 and 0,7g/cm 3 .
  • the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention contains a percentage of cork, by volume, ranging preferably between 58% and 62%; once expanded, thanks to a blowing agent, which is added in a percentage by volume ranging between 4,5% and 6,5%, density of the final product (i.e. the closure device of the invention) is obtained, between the 0,5 g/cm 3 and the 0,7 g/cm 3 .
  • the plastifying agent it is preferably a paraffinic oil for pharmacologic use, and then advantageously suitable for the food contact.
  • such plastifying element is an oil identified by the code CAS 95883 .
  • the blowing agent is a blowing master, obtained from the combination of two or more products.
  • Such products during the step of heating in order to obtain the closure device of the invention, just thanks to the heat, emit gas in microspheres inside the same closure device, completely evaporating and making it lighter and softer.
  • the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention comprises the following components: SEBS or SBS in a percentage by weight ranging between 5 and 27% plasticizing agent in a percentage by weight ranging between 5 and 27% natural cork in a percentage by weight ranging between 5 and 62%, preferably between 8 and 42%.
  • polypropylene in a percentage by weight ranging between 2 and 24% component commercially known by the name EXACT, in a percentage by weight ranging between 2 and 40%
  • EVA Ethylene-Vinyl-Acetate
  • a favourite variant of the material of the anchor stem 7, 27 and of the screen 8, 28 of the invention provides that at least one of the above listed components correspond with at least one of the following:
  • the obtained material fulfils all the regulatory requirements regarding the food contact, as the EU law 10/2011 (art.5 and 6) and subsequent updates, including the EU Regulation n. 1183/2012 from the D.M. 21/3/73 (art. 9 and 10) and their subsequent updates), (FDA - Federal Regulations - T. 21 on 01/04/2012), in addition to the requirements of the Reach and Rohs Directives.
  • adding to this resulting compound a blowing agent in quantity equal to the 3-14% of the total weight of the compound, preferably the 12%, is possible.
  • the blowing agent turns into gaseous parts, making the final material porous, light and soft.
  • the anchor stem 7, 27 and the screen 8, 28 are realized with the same material, but it is clear that, in other executive variants of the stopper according to the invention, the composite material of the laminar elements may differ from the composite material which composes the core.
  • the screen 8, 28 comprises a disc having the lateral edge bevelled and the diameter substantially equal to the external diameter of the shaped cylinder 2.
  • the screen 8, 28 has, on the surface 8a, 28a facing to the external surface of the shaped cylinder 2, 22 a circular protruding element 9, 29, which can be inserted in a slot on the external surface of the shaped cylinder 2, having a shape corresponding to that of the same circular insert 9, 29.
  • Such circular insert 9, 29 further facilitates the anchorage of the insert 3, 23 into the shaped cylinder 2, 22.
  • such circular insert 9, 29 turns out to be hollow, while it is possible that it has the shape of a solid disc, as e.g. it is depicted in the figures 5 and 6 .
  • the insert 3, 23 when the stopper 10, 20 is in working conditions faces to inside the container.
  • the operation of realizing the insert 3, 23 may consist of an operation of injection moulding of composite material on the external surface and inside the channel 4, 24 and of the slot of the shaped cylinder 2, 22.
  • the operation of injection moulding of the screen 8, 28 and the operation of injection moulding of the anchor stem 7, 27 may belong to a single operation of injection moulding, so that the anchor stem 7, 27 and the screen 8, 28 are in a single piece with each other.
  • the shaped cylinder 2, 22 is coated with a thin lubricating layer which facilitates its insertion.
  • the lubricating layer is a plasto-silico-paraffinic preparation, preferably solvent free, able to not alter then the organoleptic qualities of the liquid contained into the container.
  • stopper 10, 20 of the invention can be produced more quickly than by the known art.
  • the obtained stopper 10, 20 has better characteristics in respect with similar stoppers of known type, made up of parts made up of cork and of parts in composite material, because the latter is present in a lower percentage, but anyway sufficient to offer a shielding between the liquid and the cork, in order to preserve the liquid in aseptic conditions.
  • the injection moulding of the plastic materials different to each other will occur in close sequence within a mould: so e.g., in the case of the insert 3, 23 described above, the injection moulding of the screen 8, 28 and then the injection moulding of the anchor stem 7, 27 could be performed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (10)

  1. Stopfen (10, 20), welcher ein geformtes Element (2, 22), und zwar geeignet, um mit einem Behälter als dessen Verschluss assoziiert zu werden, und einen Einsatz (3, 23) in einem Verbundwerkstoff, der mit dem geformten Element (2, 22) assoziiert ist, aufweist, wobei der Einsatz (3, 23) wenigstens einen Ankerstiel (7, 27) und einen Schirm (8, 28) hat, und das geformte Element (2, 22) wenigstens einen Kanal (4, 24) hat, welcher mit wenigstens einer der Außenoberflächen des geformten Elements (2, 22) in Verbindung steht, worin der Ankerstiel (7, 27) eingesetzt werden kann, wobei der Schirm (8, 28) als ein Schutz für die Außenoberfläche des geformten Elements (2, 22) wirkt, wobei der Schirm (8, 28) des Einsatzes (3, 23) eine Seite (8a, 28a), die zu der Außenoberfläche des geformten Elements (2, 22) hinweist, und ein vorstehendes Element (9, 29) auf der Seite (8a, 28a) hat, und die Außenoberfläche des geformten Elements (2, 22) einen Schlitz hat, wobei dieser eine Form hat, die derjenigen des vorstehenden Elements (9, 29) entspricht, dadurch gekennzeichnet, dass der Verbundwerkstoff sterilisiertes Korkenpulver und eine thermoplastische Zusammensetzung basierend auf SBS und/oder SEBS aufweist.
  2. Stopfen (10, 20) nach Anspruch 1, dadurch gekennzeichnet, dass sich der Kanal (4, 24) linear entlang einer Längsachse (Y) erstreckt.
  3. Stopfen (10, 20) nach Anspruch 2, dadurch gekennzeichnet, dass die Längsachse (Y) in einer zentralen Zone (2b) des geformten Elements (2, 22) platziert ist.
  4. Stopfen (10, 20) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Ankerstiel (7, 27) und der Schirm (8, 28) einstückig miteinander sind.
  5. Stopfen (10, 20) nach einem der Ansprüche von 1 bis 4, dadurch gekennzeichnet, dass der Verbundwerkstoff ein Weichmachungsmittel in einem Prozentsatz an Gewicht in einem Bereich von zwischen 5 und 27% aufweist.
  6. Stopfen (10, 20) nach einem der Ansprüche von 1 bis 5, dadurch gekennzeichnet, dass die thermoplastische Zusammensetzung ein Treibmittel in einem Prozentsatz an Gewicht in einem Bereich von zwischen 3 und 40% des Gesamtgewichts aufweist.
  7. Stopfen (10, 20) nach einem der Ansprüche von 1 bis 6, dadurch gekennzeichnet, dass die thermoplastische Zusammensetzung Polypropylen in einem Prozentsatz an Gewicht in einem Bereich von zwischen 2 und 24% des Gesamtgewichts aufweist.
  8. Stopfen (10, 20) nach einem der Ansprüche von 1 bis 7, dadurch gekennzeichnet, dass die thermoplastische Zusammensetzung EVA in einem Prozentsatz an Gewicht in einem Bereich von zwischen 20 und 60% des Gesamtgewichts aufweist.
  9. Stopfen (10, 20) nach einem der Ansprüche von 1 bis 8, dadurch gekennzeichnet, dass die thermoplastische Zusammensetzung SEBS in einem Prozentsatz an Gewicht in einem Bereich von zwischen 5 und 15% des Gesamtgewichts aufweist.
  10. Stopfen (10, 20) nach einem der Ansprüche von 1 bis 9, dadurch gekennzeichnet, dass das Weichmachungsmittel ein pharmakologisches Paraffinöl in einem Prozentsatz an Gewicht in einem Bereich von zwischen 5 und 15% ist.
EP16178774.2A 2016-07-11 2016-07-11 Stopfen für getränkebehälter Active EP3269660B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16178774.2A EP3269660B1 (de) 2016-07-11 2016-07-11 Stopfen für getränkebehälter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16178774.2A EP3269660B1 (de) 2016-07-11 2016-07-11 Stopfen für getränkebehälter

Publications (2)

Publication Number Publication Date
EP3269660A1 EP3269660A1 (de) 2018-01-17
EP3269660B1 true EP3269660B1 (de) 2019-09-11

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ID=56418378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16178774.2A Active EP3269660B1 (de) 2016-07-11 2016-07-11 Stopfen für getränkebehälter

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE160096C (de) *
FR2736036B1 (fr) * 1995-06-28 1997-09-12 Maine De Biran Arnault Bouchon destine a obturer les bouteilles de vins dits tranquilles ou mousseux
AU2002368212A1 (en) * 2002-09-16 2004-04-30 Amorim Cork Italia S.P.A. Closing stopper for containers
EP2657148B1 (de) * 2012-04-26 2017-12-20 Enoplastic S.P.A. Korkbasierter Verschluss mit doppelter Siegelschutzmembran
AU2013205007B2 (en) * 2013-02-02 2016-05-26 Nomacorc Llc Closure for a product-retaining container
US8807363B1 (en) * 2013-05-19 2014-08-19 James R. Gilliam Wine cork having molded anti-taint barrier tip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

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