EP1247751A1 - Capsule pour fermentation secondaire - Google Patents
Capsule pour fermentation secondaire Download PDFInfo
- Publication number
- EP1247751A1 EP1247751A1 EP20020006064 EP02006064A EP1247751A1 EP 1247751 A1 EP1247751 A1 EP 1247751A1 EP 20020006064 EP20020006064 EP 20020006064 EP 02006064 A EP02006064 A EP 02006064A EP 1247751 A1 EP1247751 A1 EP 1247751A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- insulating layer
- gasket
- crown
- coating
- 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.)
- Granted
Links
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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
- 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
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/005—Closures provided with linings or internal coatings so as to avoid contact of the closure with the contents
Definitions
- This invention relates to crown corks and in particular, but not exclusively, to crowns of the type used for sealing bottles containing carbonated drinks such as cider, water, fruit juices etc., or containing sparkling wine, such as champagne, whilst the wine undergoes secondary fermentation to make the champagne.
- crowns comprising a coated aluminium shell and a synthetic gasket/liner which is bonded to the shell by hot melt glue.
- the gasket/liner is of laminar structure, typically having a layer of foam polyethylene sandwiched between barrier films.
- the gasket/liner is slightly smaller than the shell and is centred and then pressed onto the glue.
- the barrier layer which contacts the hot melt glue can support the temperature of the glue, typically around 180°C. No heating of the other barrier layer occurs due to the insulating layer of foam polyethylene so that there is no damage of the barrier films.
- the integrity of the latter barrier layer is essential to maintain a high oxygen barrier and to avoid direct contact between the wine and the aluminium shell of the crown.
- crowns in which a liquid or viscous compound is placed in the shell and then formed around the interior of the crown by moulding tool pressure, such crowns use completely different techniques from the manufacture of crowns which use a solid laminated barrier structure. Clearly the capital outlay alone means that such techniques are not viable for addressing all the issues of the crowns of the present invention.
- a crown closure comprising a metal shell coated on its interior surface and a laminated gasket having an insulating layer and a barrier layer on at least one side of the insulating layer, in which the insulating layer welds directly to the coating of the metal shell.
- the insulating layer may be a polyethylene foam, or other material and type depending on the mechanical requirements of the layer, and the coating of the metal shell is selected to bond with the insulating layer.
- One such coating may be "PPG IP 3138/303" varnish, which has been specially developed to bond by welding with the polyethylene.
- the barrier layer prevents direct contact between the metal shell and the product (typically wine) within a bottle to which the crown is attached. If there is only a single barrier layer, this will usually be on the side of the laminated gasket which, in use, will be adjacent the product rather than the end of the crown.
- the laminated gasket has a barrier layer on both sides of the insulating layer so as to be symmetrical for use with the bulk feeding equipment which is generally used.
- the gasket is typically slightly larger than the internal diameter of the shell, such that the gasket is a "push fit" within the shell.
- the insulating layer of the gasket liner is fixed in position by welding which leads to a direct bond with the coating of the metal shell.
- the weld between the insulating layer and the metal shell is between part or all of the exposed edge or periphery of the insulating layer and the side wall or skirt of the crown.
- the liner' gasket is slightly smaller than the shell internal diameter and therefore requires centring in the shell.
- the prior art liner gasket is fixed in position by adhesive between its end surface (rather than its periphery) and the shell.
- a method of manufacturing the crown closure comprising fixing the gasket with the shell by heating part or all of the exterior surface of the shell adjacent the edge of the gasket where the insulating layer is exposed, whereby the gasket is welded in position within the shell by bonding between at least part of the insulating layer and the coating of the shell.
- Heating is preferably by induction heating so that the barrier film is only exposed to the welding temperature of 125°C for a very short time, typically 1 to 2 seconds for a line speed of 30 m/min. Induction heating is preferred so that heating is limited to the metallic shell. The liner will only be heated by any conduction in the region of the weld and, as this is only for a very short time, the barrier film is not damaged in any way.
- the method may comprise pre-heating of the shell prior to inserting the gasket in the shell.
- Figure 1 shows a prior art crown comprising an aluminium shell 2 having an internal coating 3 of PPG 4601 (vinylic type lacquer) for protection.
- a hot melt glue 4 bonds a synthetic gasket 5 to the inside of the shell 2.
- the gasket 5 comprises a polyethylene layer 8 sandwiched between barrier film layers 6 and 7.
- the laminated gasket 5 has a smaller diameter than the internal diameter of the shell, typically 29.2 mm and 29.5 mm respectively.
- the gasket is pressed into the shell as indicated by the arrow in figure 1 so that the glue 4 is spread into a layer between the end surface of the gasket and the shell as shown.
- the liner 15 of figure 2 is the same thickness as that of the prior art crown, i.e. 2.3 mm, but, in contrast, the new liner has a larger external diameter than the internal diameter of the shell 12 - typically 29.6 mm and 29.5 mm respectively.
- the gasket 15 is push fitted into the shell 12 without any glue, where it is simply wedged in position by virtue of the difference in diameters, as shown in figure 3.
- the liner 15 comprises a polyethylene central layer 18 sandwiched between barrier layers 16 and 17, as in the prior art gasket.
- the shell 12 is of metal, generally aluminium but alternatively tinplate or stainless steel and has a special internal coating suitable for sealing with the polyethylene layer 18. As shown in figure 4, this weld is formed by induction heating the exterior of the shell in the region indicated by the large arrows. Natural pressure between the polyethylene gasket and the varnish coating of the shell ensure that welding only takes place at the edge of the liner gasket. By using induction heating, any contact with the barrier film, which could be damaged is avoided.
- Figure 5 shows the final crown with the liner fixed by induction heating of its perimeter as indicated by welded areas 18.
- the barrier layer 17 is unaffected by the welding as it is never heated. Any heating of lower barrier layer 16 is very limited in duration so that the film is not damaged.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20020006064 EP1247751B1 (fr) | 2001-03-23 | 2002-03-18 | Capsule pour fermentation secondaire |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01302699A EP1245498A1 (fr) | 2001-03-23 | 2001-03-23 | Capsule pour fermentation secondaire |
EP01302699 | 2001-03-30 | ||
EP20020006064 EP1247751B1 (fr) | 2001-03-23 | 2002-03-18 | Capsule pour fermentation secondaire |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1247751A1 true EP1247751A1 (fr) | 2002-10-09 |
EP1247751B1 EP1247751B1 (fr) | 2004-12-29 |
Family
ID=26077107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020006064 Expired - Lifetime EP1247751B1 (fr) | 2001-03-23 | 2002-03-18 | Capsule pour fermentation secondaire |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1247751B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2270682A1 (es) * | 2003-06-04 | 2007-04-01 | Tapon Corona, S.A. De C.V. | Tapon corona 27 estrias. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1956481A (en) * | 1933-06-16 | 1934-04-24 | Crown Cork & Seal Co | Spot crown and liner material therefor |
US2081246A (en) * | 1933-03-29 | 1937-05-25 | Crown Cork & Seal Co | Container closure and method of making same |
US2238681A (en) * | 1939-03-16 | 1941-04-15 | Du Pont | Container closure |
US3447710A (en) * | 1967-08-15 | 1969-06-03 | Grace W R & Co | Manually removable tear-type closure elements |
US4269321A (en) * | 1977-11-29 | 1981-05-26 | Toyo Seikan Kaisha, Ltd. | Peelable bonded structures and process for preparing same |
-
2002
- 2002-03-18 EP EP20020006064 patent/EP1247751B1/fr not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2081246A (en) * | 1933-03-29 | 1937-05-25 | Crown Cork & Seal Co | Container closure and method of making same |
US1956481A (en) * | 1933-06-16 | 1934-04-24 | Crown Cork & Seal Co | Spot crown and liner material therefor |
US2238681A (en) * | 1939-03-16 | 1941-04-15 | Du Pont | Container closure |
US3447710A (en) * | 1967-08-15 | 1969-06-03 | Grace W R & Co | Manually removable tear-type closure elements |
US4269321A (en) * | 1977-11-29 | 1981-05-26 | Toyo Seikan Kaisha, Ltd. | Peelable bonded structures and process for preparing same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2270682A1 (es) * | 2003-06-04 | 2007-04-01 | Tapon Corona, S.A. De C.V. | Tapon corona 27 estrias. |
Also Published As
Publication number | Publication date |
---|---|
EP1247751B1 (fr) | 2004-12-29 |
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