EP1220791B1 - Bouchon en liege agglomere et son procede d'obtention - Google Patents

Bouchon en liege agglomere et son procede d'obtention Download PDF

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Publication number
EP1220791B1
EP1220791B1 EP00967947A EP00967947A EP1220791B1 EP 1220791 B1 EP1220791 B1 EP 1220791B1 EP 00967947 A EP00967947 A EP 00967947A EP 00967947 A EP00967947 A EP 00967947A EP 1220791 B1 EP1220791 B1 EP 1220791B1
Authority
EP
European Patent Office
Prior art keywords
binder
cork
stopper
temperature
period
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
Application number
EP00967947A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1220791A1 (fr
Inventor
Christian Delage
Pierre Dalet
José Alcorta
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.)
LES BOUCHAGES DELAGE
Original Assignee
LES BOUCHAGES DELAGE
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 LES BOUCHAGES DELAGE filed Critical LES BOUCHAGES DELAGE
Publication of EP1220791A1 publication Critical patent/EP1220791A1/fr
Application granted granted Critical
Publication of EP1220791B1 publication Critical patent/EP1220791B1/fr
Anticipated expiration legal-status Critical
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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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • 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
    • B65D39/0005—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in one piece
    • B65D39/0011—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in one piece from natural or synthetic cork, e.g. for wine bottles or the like

Definitions

  • the present invention relates to the manufacture of caps based on agglomerated cork particles intended in particular for corking wines or bottled spirits.
  • the manufacturing process for such closures uses either extrusion continuously, either by unit molding.
  • This type of semi-synthetic stopper has a drawback main. Indeed, if we want the mechanical properties of the plug are sufficient, in particular absence of crumbling and loss of material during use or handling, the percentage of binder must be very high. This has harmful consequences on gas tightness; the result is close to that of synthetic caps, making this type of cap bad suitable for use for aging wines.
  • the manufacture of the cap requires a lower quantity of material, and therefore proportionally, of binder, and this results, in the end, in cork with a density close to that of natural cork.
  • the purpose of the present invention is to overcome these drawbacks by proposing a technique for manufacturing a cork agglomerated by an organic binder, having a homogeneous alveolar architecture similar to that of natural cork.
  • the invention relates to a plug of the type consisting of a agglomerate of natural cork particles and an organic binder, characterized by what the binder is in the form of an open cell alveolar structure.
  • an extrusion is carried out, the sausage obtained later being cut.
  • an imprint of a mold the quantity necessary to obtain a cap and wear said mold at a temperature between 120 and 160 ° C for a period between 10 and 30 minutes, then unmold the cap.
  • the binder comprises a basic polymer constituted by a polyurethane prepolymer and a foaming agent consisting of water.
  • the cap after removing the cap from the mold, it is stabilized thermally by bringing it to a temperature between 100 and 150 ° C. for about 30 to 90 minutes, then at temperature between 30 and 90 ° C for a period between 48 hours and 7 days, for the purpose of obtaining organoleptic properties appropriate and more particularly of neutrality with regard to the liquid as well mouth.
  • Such a cap has the remarkable property of having a homogeneous open alveolar architecture, i.e. similar for the part cork on the one hand and for the binding part on the other hand, the assembly thus having a architecture similar to that of natural cork.
  • the process of the invention consists in its general principle of mixing, on the one hand, natural cork in particulate form, on the other hand, a binder under form of a powder of a basic polymer consisting of an assembly of macromolecules with molar masses between 150 g / mol and 500,000 g / mol having, per chain, at least one reactive function of nucleophilic and / or electrophilic type to which is added a foaming agent to electrophilic and / or nucleophilic molecule and / or macromolecule with which said polymer is capable of reacting respectively.
  • said base polymer is a prepolymer of polyurethane and the foaming agent is water.
  • the binder and the cork thus have conformations and properties equivalent physical.
  • FIG. 1 Illustrated in FIG. 1, the structure of a plug according to the invention, which includes particles 1 of natural cork, scattered and embedded in a cellular mass of binder 2.
  • the cork part of the cork represents between 50 and 70% of the total mass.
  • the cork particles have two particle sizes different to obtain a more uniform cap.
  • the cork part includes flour and granules, in proportion of about a third of flour for two thirds of granules.
  • a surfactant such as a silicone for example, is added to the binding part for the purpose of forming an alveolar structure more homogeneous and with better sliding properties for the stopper.
  • a plasticizing agent of the polymer type for example a natural or synthetic latex.
  • mixing is carried out at temperature ambient, all the constituents of the reaction.
  • a suitable release agent for a period between 10 and 30 minutes.
  • This final stabilization step is important because, in its absence, unused reagents, remaining in the cap, could possibly go into alcohol and give it an unwanted taste.
  • the starting mixture is shaped by extrusion at a temperature between 120 and 160 ° C, the rod obtained being maintained at a temperature for a period of between 10 and 30 minutes, then cut to obtain the desired plugs
  • the plug according to the invention may possibly be partially or completely coated with a gliding aid or sealing, chosen from those usually used for this purpose.
  • FIG. 2A graphs of comparative tests of compression of three kinds of caps with the same diameter of 22 mm and same length, namely a plug A according to FR 2 672 002, a plug B of the extruded type of the prior art mentioned above and a plug C according to the invention.
  • FIG. 2A illustrates the behavior of these three plugs according to respectively compression to 10% of the length of the plugs at the length reduction speed of 10 mm per minute and compression at 50% of said length at the speed of 200 mm per minute.
  • FIG. 2B are graphs of elastic recovery of these same caps A, B and C after compression.
  • the areas in fine hatching indicate the maximum force in Newton to compress each plug to 50%, while the areas in thicker hatching indicates the value of the expansion force exerted by each plug compressed after 5 minutes of 50% compression.
  • the force necessary to compress to 50% the plug is about 480 N, substantially identical to that necessary to compress plug A.
  • the elastic return force of the plug C, measured at the the measuring device is of the order of 250 N.
  • the plug C according to the invention lies in a very good average hardness and of elasticity and practically does not deform under compression, while by example, cap B is harder and less easy to bottle.
  • the invention is obviously not limited to the modes of implementation work described above, but on the contrary covers all its variants, particularly with regard to the nature and proportions of the constituents of the cork part (1) and the binder part (2), as well as the operating methods, in particular the temperatures and the durations of the shaping process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Lubricants (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Compounds Of Unknown Constitution (AREA)
EP00967947A 1999-10-05 2000-10-04 Bouchon en liege agglomere et son procede d'obtention Expired - Lifetime EP1220791B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9912724A FR2799183B1 (fr) 1999-10-05 1999-10-05 Bouchon en liege agglomere et son procede d'obtention
FR9912724 1999-10-05
PCT/FR2000/002759 WO2001025103A1 (fr) 1999-10-05 2000-10-04 Bouchon en liege agglomere et son procede d'obtention

Publications (2)

Publication Number Publication Date
EP1220791A1 EP1220791A1 (fr) 2002-07-10
EP1220791B1 true EP1220791B1 (fr) 2003-07-30

Family

ID=9550847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00967947A Expired - Lifetime EP1220791B1 (fr) 1999-10-05 2000-10-04 Bouchon en liege agglomere et son procede d'obtention

Country Status (8)

Country Link
EP (1) EP1220791B1 (pt)
AT (1) ATE246126T1 (pt)
AU (1) AU7793500A (pt)
DE (1) DE60004252D1 (pt)
ES (1) ES2204702T3 (pt)
FR (1) FR2799183B1 (pt)
PT (1) PT1220791E (pt)
WO (1) WO2001025103A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2905626B1 (fr) * 2006-09-13 2012-08-31 Ardennes Chirorees Procede de realisation d'un produit en liege agglomere.
BRPI0604459B1 (pt) 2006-10-03 2014-04-15 Jose Norberto Pinto Coelho Processo de obtenção de rolhas a partir da aglomeração de materiais mistos
PT103591B (pt) * 2006-10-17 2010-03-23 Inst Superior Tecnico Processo de produção de corpos cilíndricos de material compósito de cortiça, destinados à produção de rolhas para vinhos de pressão, bem como as rolhas produzidas por este processo
PT2776334T (pt) 2011-11-11 2019-01-30 Vinventions Usa Llc Dispositivo de fecho para um recipiente de retenção de produto
AU2013204663B2 (en) 2012-06-08 2015-07-02 Nomacorc Llc Method of preparing a closure for a product-retaining container
AU2013205007B2 (en) 2013-02-02 2016-05-26 Nomacorc Llc Closure for a product-retaining container
AU2013204542A1 (en) 2013-04-05 2014-10-23 Nomacorc Llc Closure for a Product-Retaining Container
CN109642043A (zh) * 2016-08-02 2019-04-16 唯万盛美国有限责任公司 用于产品保持容器的封闭件
ES2972910T3 (es) 2017-11-09 2024-06-17 Vinventions Usa Llc Método para fabricar un cierre para un recipiente de retención de producto
WO2019094756A1 (en) 2017-11-09 2019-05-16 Vinventions Usa, Llc Particulate material for use in the production of a cork composite material or an article of manufacture comprising cork
US20190135498A1 (en) 2017-11-09 2019-05-09 Vinventions Usa, Llc Method for manufacturing coated particles
WO2019094806A1 (en) 2017-11-09 2019-05-16 Vinventions Usa, Llc Method for manufacturing a closure for a product-retaining container
WO2019094738A1 (en) 2017-11-09 2019-05-16 Vinventions Usa, Llc Thermoplastic material and use thereof in the production of a cork composite material
WO2020046528A1 (en) 2018-08-31 2020-03-05 Vinventions Usa, Llc Decorative closure for a container

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040889B (en) * 1979-01-30 1983-01-26 Metal Box Co Ltd Closures for containers for wine or wine-based products
US4363849A (en) 1980-10-30 1982-12-14 The Coca-Cola Company Foamed thermoplastic resin cork having a natural cork-like appearance and a method of injection molding the cork
FR2672002B1 (fr) 1991-01-25 1995-05-24 Sabate Sa Bouchons Champagne Composition utilisable pour la fabrication de bouchon et procede de fabrication.
US5904965A (en) * 1997-04-24 1999-05-18 Nomaco, Inc. Synthetic closure
AUPO832997A0 (en) * 1997-07-31 1997-08-28 Southcorp Australia Pty Ltd Polymeric closure
DE19849149A1 (de) * 1998-03-09 1999-09-16 Gefinex Benelux S A Kunststoffschaum zum Verschließen von Behältnissen

Also Published As

Publication number Publication date
EP1220791A1 (fr) 2002-07-10
WO2001025103A1 (fr) 2001-04-12
AU7793500A (en) 2001-05-10
ATE246126T1 (de) 2003-08-15
ES2204702T3 (es) 2004-05-01
FR2799183A1 (fr) 2001-04-06
DE60004252D1 (de) 2003-09-04
FR2799183B1 (fr) 2001-12-14
PT1220791E (pt) 2003-12-31

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