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
  • B65D51/00—Closures not otherwise provided for
  • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
  • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
  • B65D51/22—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure
  • B65D51/228—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being removed from the container after the opening
• • 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
  • B65D41/045—Discs

Definitions

• the invention relates to a closure device and to a container equipped with such a device.
• the invention also relates to a method of manufacturing such a closure device.
• the invention more particularly intends to remedy by proposing a closure device for a container that is compatible with the use of a sealing disk and that makes it possible to safely remove this device during the first time. use of the container, while its cost is particularly attractive.
• the invention relates to a closure device for a container provided with a neck, this device comprising:
• a sealing disc adapted to be sealed, glued or blocked on the edge of the neck projecting radially outwardly of the neck;
• a plug adapted to be mounted on the neck and provided with an internal relief adapted to exert on the sealing disc a thrust force in a direction of separation of the disc relative to the neck; characterized in that the relief is formed by a one-piece tongue with the cap and folded towards the bottom of the plug, in a generally frustoconical configuration converging towards this bottom.
• the tongue folded with a frustoconical configuration makes it possible to effectively transmit a thrust force of the plug towards the sealing disc, the resistant force due to the sealing disc having the effect of tending to increase the angle at the top of the tongue which then bears against the outer surface of the neck and remains in folded configuration.
• the tongue may be continuous or discontinuous around the neck.
• such a closure device may incorporate one or more of the following features:
• the tongue is connected to the plug by a deformable portion.
• This deformable portion advantageously has a thickness less than the thickness of the tongue in the vicinity of its free edge by which it can exert the pushing force on the disc.
• the free edge of the tongue which is opposite its connecting portion to the inner face of the cap, is provided with preferred thrust zones against the disc.
• the free edge of the skirt may be wave-shaped.
• the stopper is provided with a tamper-evident band connected to a main part of the stopper by at least one breakable zone, this tamper-evident band being suitable, during a first withdrawal of the stopper, to abut with a portion forming a stop against a blocking relief formed on the outside of the neck, whereas, before the first removal of the cap, the distance between the abutment portion of the tamper-evident band and the locking relief is less than the minimum axial distance between the folded tongue and the sealing disk, so that, during this first withdrawal, the tamper band abuts against the locking relief before the tongue exerts the thrust force.
• the invention also relates to a container, in particular a plastic bottle, equipped with a closure device as previously described.
• the invention finally relates to a method of manufacturing a closure device as mentioned above, this method comprising the steps of: a) - molding the cap with a generally frustoconical and convergent inner tongue opposite the bottom cork; b) - install the sealing disc near the bottom of the plug; c) - fold the tab towards the bottom of the plug so that it takes a generally frustoconical configuration towards the bottom.
• step c) precedes step b), the tongue being deformed elastically and radially towards the internal face of the plug to allow the installation of the sealing disc during step b).
• steps b) and c) are simultaneous, the tongue being folded by the sealing disc during installation or by a displacement member of the sealing disc towards the bottom of the plug.
• FIG. 1 is a sectional view of the neck of a bottle equipped with a closure device according to the invention
• FIG. 2 is an enlarged view of detail II in FIG. 1;
• Figure 5 is a perspective view of the plug in the configuration of Figure 4;
• - Figure 6 is a view similar to Figure 2 during a first opening of the bottle;
• FIG. 7 is a view similar to FIG. 2 for a closure device according to a second embodiment in accordance with the invention and FIG. 8 is a view similar to FIG. 2 for a closure device in accordance with FIG. third embodiment of the invention.
• the bottle B partially shown in FIG. 1 comprises a neck 1 provided with an external thread 11 and a part 12 whose outer surface 13 is intended to receive a sealing disc 2 belonging to a sealing device 3 in abutment.
• the sealing disk comprises a core 21 of synthetic material which projects radially with respect to the surface 13, as well as a cap 22 made of an aluminum-based complex, this cap being bonded over substantially its entire surface. , on the core 21.
• the seal 22 has a diameter substantially equal to that of the outer radial surface 14 of the neck 1 in the vicinity of the portion 12.
• the closure device 3 comprises a plug 4 monobloc which consists of a cap 41 and a tamper evident band 42, the elements 41 and 42 being molded in one operation by being connected by a breakable zone 43.
• the cap 41 is provided with an internal thread 411 intended to cooperate with the thread 11 for screwing and unscrewing the cap 4 on the neck 1.
• Xi the central axis of the neck 1.
• X 4 the central axis of the plug 4.
• the axes Xi and X 4 are coincident in the mounted configuration of the device 3 of the neck 1.
• the cap 41 is provided on the inner face of its peripheral skirt 414, a tab 412 deformable and monobloc with this skirt.
• P denotes a plane perpendicular to the axis X 4 and passing through the center of a zone 4211 for attaching the tongue 412 to the skirt 414.
• the tongue 412 extends, relative to the plane P opposite the bottom 413, as shown in FIG. 4.
• the tamper-evident band 42 is provided with an internal tongue 421 which is integral with the band 42 and which is connected thereto by a zone of FIG. 4211.
• P ' is a plane perpendicular to the axis X 4 and passing through the center of the zone 4211.
• the skirt 421 extends, relative to the plane P', opposite the bottom 413, as shown in FIG.
• the orientation of the tongues 412 and 421 at the mold outlet is such that these skirts can be easily molded, with high production rates.
• this disc is disposed on a piston 100 which is moved towards the bottom 413, in the direction of the arrow Fi to FIG. 4.
• the piston 100 supports the disk 2 up to its outer peripheral edge 23.
• the disk 2 comes to bear against the skirt 421 which it flaps in the direction of the inner surface 425 of the strip 42, in the direction of the arrow F 2 in FIG. 4.
• the disc 2 supported by the piston 100 also flips the tongue 412 to the inner surface 415 of the skirt 414, in the direction of the arrow F 3 in Figure 4.
• the tab 412 is folded down, so that it has a generally frustoconical configuration and convergent towards the bottom 413, with a half angle at the top ⁇ of the order of 40 °.
• the angle ⁇ has a value between 10 and 60 °.
• the invention takes advantage of the fact that the attachment zone 4121 is deformable, which allows the tongue 412 to pass easily from the configuration of FIG. 4 to that of FIG. 1.
• the tongue 412 can be folded down by a tool such as the piston 100, in the direction of the arrow F 3 in FIG. 4, before the sealing disc 2 is put into position. placed in the vicinity of the bottom 413. This establishment then takes place by means of a temporary radial deformation of the tongue 412 from its position of Figures 1 and 2 and in a direction of radial spacing towards the surface 415 In all cases, once the disc 2 in place in the vicinity of the bottom 413, it is retained in position by the tongue 412, this until mounting the device 3 on the neck 1. At the end of this assembly, the cover 22 may be welded to the surface 13, which guarantees the tightness of the closure obtained.
• the distance d 2 is chosen less than the minimum value of the distance di so that, during the unscrewing of the cap 41, the skirt 421 abuts against the collar 16, which induces a break in the zone 43, before any contact between the tongue 412 and the After this rupture, the continuation of the unscrewing movement has the effect of bringing the free edge 4122 of the tongue 412 in abutment against the position 26 of the surface of the disk 2 opposite the bottom 413 which protrudes radially to the outside the part 12.
• the free edge 4122 of the tongue 412 is provided with portions 4123 which extend at a distance from the attachment area 4121 greater than the distance between certain other parts 4124 of the free edge 4122 and this area 4121.
• the parts 4123 of the free edge 4122 thus form privileged areas of application of the force F 4 , while no lifting or pulling force of disc 2 passes through zones 4124.
• the thickness e 4 i22 of the free edge 4122 is greater than the thickness e 4 i2i of the attachment zone, which confers on the tongue 412 sufficient rigidity in its zone of transmission of the force F 4 to the disk 2 , while the hinge area 4121 is sufficiently flexible to allow easy passage of the configuration of Figure 4 to that of Figures 1 and 2.
• the tongue 412 could be interrupted on certain sectors angular, in particular those corresponding to the parts 4124.
• the tongue 412 is formed of several tongue portions separated by spaces distributed around the neck of the container.
• the cap 41 of the cap 4 is provided with an inner tongue 412 which is folded from its position shown in phantom at the mold outlet to its position shown in solid lines.
• This tongue 412 can extract the disc 2 of the neck 1 when opening the corresponding container.
• the plug 4 is made of plastic, for example high density polyethylene (HDPE), polypropylene and, more generally, polyolefin.
• the neck of the bottle can be made of plastic, for example polyethylene, or glass.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=37532968

Family Applications (1)

Country Status (8)

Families Citing this family (10)

Family Cites Families (7)

• 2006
  • 2006-04-20 FR FR0603510A patent/FR2900129B1/fr not_active Expired - Fee Related
• 2007
  • 2007-04-19 CA CA002649461A patent/CA2649461A1/fr not_active Abandoned
  • 2007-04-19 CN CNA2007800141243A patent/CN101426692A/zh active Pending
  • 2007-04-19 AU AU2007242677A patent/AU2007242677A1/en not_active Abandoned
  • 2007-04-19 WO PCT/FR2007/000661 patent/WO2007122323A1/fr active Application Filing
  • 2007-04-19 JP JP2009505932A patent/JP2009534258A/ja not_active Withdrawn
  • 2007-04-19 US US12/226,405 patent/US20090184082A1/en not_active Abandoned
  • 2007-04-19 EP EP07731325A patent/EP2007642A1/fr not_active Withdrawn

Non-Patent Citations (1)

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