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WO1996031405A1 - Conteneurs et fermetures pour lesdits conteneurs - Google Patents

Conteneurs et fermetures pour lesdits conteneurs Download PDF

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Publication number
WO1996031405A1
WO1996031405A1 PCT/AU1996/000195 AU9600195W WO9631405A1 WO 1996031405 A1 WO1996031405 A1 WO 1996031405A1 AU 9600195 W AU9600195 W AU 9600195W WO 9631405 A1 WO9631405 A1 WO 9631405A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
closure
skirt
locking
die
Prior art date
Application number
PCT/AU1996/000195
Other languages
English (en)
Inventor
Donald Terry Goodall
Original Assignee
Goodall Donald T
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 Goodall Donald T filed Critical Goodall Donald T
Priority to AU51379/96A priority Critical patent/AU712191B2/en
Publication of WO1996031405A1 publication Critical patent/WO1996031405A1/fr
Priority to US09/035,075 priority patent/US6041953A/en

Links

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
    • B65D41/16—Snap-on caps or cap-like covers
    • B65D41/18—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
    • B65D41/185—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics with integral internal sealing means
    • 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
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • 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
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges

Definitions

  • This invention relates to containers and closures therefor and is particularly suitable for use with containers made from plastics material e.g. polypropylene.
  • Containers and closures manufactured from material of this type have many minor surface imperfections caused by moulding operations and thermal contraction. These imperfections make it extremely difficult to effect a proper seal unless special precautions are taken and even when this is done the contents of the container sometimes leak which is highly undesirable where the container is used for pressurised fluids e.g. carbonated beverages, autoclaved and volatile fluids or body fluids used for pathological examination purposes.
  • pressurised fluids e.g. carbonated beverages, autoclaved and volatile fluids or body fluids used for pathological examination purposes.
  • the present invention relates to a closure and a container which overcomes the problems previously encountered and provides a simple and inexpensive construction whereby the closure is effectively sealed and preferably locked to the container to effect a leak-proof seal with minimum effort.
  • Containers come in various shape and sizes, some have neck portions and some do not. It is to be understood however that the principles of the invention are applicable to both types of containers and the only qualification is that the container or neck thereof have the features herein referred to. For this reason whenever the word container is referred to hereafter it is to be understood as including the neck of a container.
  • the invention discloses a container and a removable closure therefor, said container having an outlet with an inner and outer surface terminating at one end in a rim, said outlet having at least two regions of different cross-sectional areas joined by an inclined surface with the cross-sectional area of said region adjacent the rim being greater than the cross-sectional area of said region inwardly of said inclined surface, said closure having an inner and outer skirt connected at an upper end thereof with an disc connecting said inner skirt and thereby forming said closure, said inner and outer skirts defining between them a slot which when the closure is applied to the container receives the container rim, the inner skirt having a sealing zone extending into said slot, the cross-sectional areas of said regions and the size of said sealing zone on said inner skirt being such that when the closure is applied to said container the outer surface of the inner skirt engages the inner surface of said outlet to force the inner surface of said outlet adjacent the rim into sealing engagement with said sealing zone to seal said closure to said container and means may be provided to lock the closure to the container.
  • the inner skirt of said closure is stepped inwardly below said sealing zone to form a shoulder thereby providing a secondary sealing zone which when the closure is applied to a container seals against said inclined surface.
  • the respective sealing zones are progressively released thereby permitting a controlled release of gas from the container.
  • the means to lock the closure to the container in one form comprise a threaded section of the outer skirt which engages with a complimentary threaded section on the container.
  • the locking of the closure to the container may be effected by a wedging action between the closure and the container.
  • the outer skirt of the closure is provided with a frusto-conical locking skirt extending circumferentially about the bottom edge thereof and movable between an unlocked and locked position said locking skirt in the unlocked position converging towards to the outer skirt and thus presenting a smooth inner surface to the outer wall of the container thereby permitting said closure to be freely applied and removed from said container.
  • the locking skirt diverges away from the outer skirt with the inner bottom edge of said locking skirt forming a locking bead at its junction with the outer skirt which tightly engages the container outer wall to lock said closure to said container.
  • the locking bead seats in a circumferential locking slot on the outer wall of the container.
  • the closure and container is provided with a tamper evident structure.
  • the outer surface of the container is provided with a circumferentially outwardly extending collar positioned below the container rim, the collar having a circumferential slot in its edge thereby defining an upper and lower limb, the free end of the conical locking skirt having a tamper evident band secured thereto by a fracture line extending circumferentially around said locking skirt and having a hinge connection with said locking skirt at one side position thereof, which band in the unsecured position and in the unlocked position of said locking skirt is positioned above said collar enabling the closure to be freely applied to and removed from the container and in the locked position of said locking skirt said tamper evident sealing band seats in said slot, said tamper evident sealing band being provided with a finger tag which facilitates the fracturing of said fracturable portion and permits the cap to be pivoted about its hinge to open
  • each side of the container is provided with two downwardly directed "V" shaped channels connected by a transverse section and positioned below and spaced from the transverse section is a transverse channel.
  • the closure has a tamper evident skirt connected thereto by a fracture line and a lock member positioned on the inner surface of the closure and the tamper evident skirt is adapted to be accommodated in the respective transverse section and transverse channel to lock the closure to the container.
  • Rotational movement of the closure relative to the container breaks the fracture line and permits the container to be opened and means may be provided on the container to permit the controlled release of gas from the container.
  • FIG. 1 is a cross-sectional view of a closure in accordance with a first embodiment of the invention
  • Figure 2 is a cross-sectional view of a container for use with the closure illustrated in Figure 1;
  • Figure 3 is a cross-sectional view of the closure and container illustrated in Figures 1 and 2 with the closure partly applied to the container;
  • Figure 4 is a view similar to Figure 3 with the closure sealed and locked to the container;
  • Figure 5 is a cross-secuonal view of the closure and container in the unsealed and unlocked position in accordance with a second embodiment of the invenuon;
  • Figure 6 is a cross-sectional view of the closure and container illustrated in
  • Figure 5 in the sealed and locked condition
  • Figures 7 and 8 are cross-sectional views of a closure and container similar to those illustrated in Figures 5 and 6 but illustrating a third embodiment of the invention
  • Figure 9 is a cross-sectional view of a closure partly applied to a container in accordance with a fourth embodiment of the invenuon;
  • Figure 10 is a cross-sectional view of the closure and container illustrated in Figure 9 in a sealed and locked condition
  • Figure 11 is a cross-sectional view of the closure illustrating a tamper evident structure in accordance with a fifth embodiment of the invention.
  • Figure 12 is a cross-sectional view of a container for use with the closure illustrated in Figure 11;
  • Figure 13 is a cross-sectional view of the closure and container illustrated in
  • Figure 14 is a similar view to Figure 13 with the closure and container in an unlocked condmon;
  • Figure 15 is a similar view to Figure 14 with the closure and container in fully opened condmon;
  • Figure 16 is a cross sectional view of a container for use with a closure for use with a tamper proof structure in accordance with a sixth embodiment of the invention.
  • Figure 17 is a cross sectional view of a closure for use with the container illustrated in Figure 16;
  • Figure 18 is a cross sectional view of the container and closure illustrated in
  • Figure 19 is a cross-sectional view of the container and closure illustrated in Figures 16 and 17 with the closure partly removed from the container;
  • Figure 20 is a similar view to Figure 19 with the closure rotated through an angle of 180° and almost removed from the container
  • the container 2 ( Figure 2) has an outlet formed by a wall 3 with inner and outer surfaces 4 and 5 terminating in a rim 6.
  • the outlet has regions of different cross-sectional areas
  • the cross-sectional area 8 is greater than the cross-sectional area 7 and the thickness of the wall 3 in the area 8 is less than the thickness of the wall in the area 7.
  • the junction of the surface 4 with the inclined surface 9 forms a shoulder 10.
  • the closure ( Figure 1) has an inner and outer skirt 11 and 12 connected at an upper end thereof with an annular disc 13 connecting said inner skirt and forming with said skirts 11 and 12 the closure 1.
  • the inner and outer skirts defining between d em a circumferential slot 14 which when the closure is applied to the container, receives the container outlet.
  • the outer surface of the inner skirt 11 is stepped outwardly adjacent the annular disc 13 to provide a sealing zone or band 15.
  • the closure may be locked to the container in the manner illustrated in Figures 1 to 6.
  • the container is provided with a circumferential slot 17 and the surface 5 above the slot is threaded as at 18.
  • the inner surface of the outer skirt 12 of the closure 1 has a threaded section 19 which is adapted to mate with the threaded section 18 on the container and the free end of the outer skirt 12 is provided with an inwardly directed flange 16 whereby the closure is secured and locked to the container as clearly illustrated in Figure 4. In this position the outer skirt 12 flexes outwardly thus permitting the flange 16 to lock into the circumferential slot 17.
  • closure and container illustrated in Figures 1-4 is particularly suitable for accommodating pressurised fluids.
  • the skirt 11 is forced outwardly below the inclined surface 9 into a tight secondary seal adjacent the shoulder 10 of the container, thereby relieving the closure of excess loading forces caused by pressure in the container, relieving the mated threaded sections of heavy loading which means that the closure can be applied to and locked to the container with minimum of effort and also permitting a controlled release of pressure from the container as it is opened.
  • a vent slot (not shown) passes through the threads to relieve gas pressure as the container is opened.
  • the closure and container of the embodiment are similar to the embodiment illustrated in Figures 1 to 4.
  • the flange 16 on the skirt 12 and the circumferential slot 17 on the surface 5 of the container are omitted and the bottom edge 20 of the skirt 12 abuts against a collar 21 formed on the surface 5 of the container, thereby isolating the threads from any contact with water or other fluid in which the container may be immersed.
  • FIG. 7 to 10 ⁇ ese Figures illustrate an alternative system whereby the closure is locked to die container.
  • the outer skirt 12 is provided with a frusto-conical locking skirt 22 extending circumferentially about the bottom edge thereof, the locking skirt 22 is movable between an unlocked and locked position.
  • the locking skirt In the unlocked position the locking skirt converges towards the skirt 12 thereby presenting a smooth inner surface to the surface 5 of the container and thereby permitting the closure to be applied to and removed from the container 2, however when the locking skirt 22 is forced downwardly and diverges away from the skirt 12, a locking bead 23 is generated at the junction of the skirt 12 and the locking skirt 22 which tightly engages the surface 5 of the container to lock the closure to the container as illustrated in Figure 8.
  • annular disc 13 connects the bottom edge of the inner skirt
  • a circumferential locking slot 24 is formed in surface 5 of the container to provide a seat which receives the bead 23 to assist in locking the closure to the container.
  • the container is provided with a shoulder 25 and a circumferentially outwardly extending collar designated generally by the reference 26.
  • the collar is provided with a circumferential inwardly directed slot 27 in its edge d ereby defining an upper limb 28 and a lower limb 29.
  • the upper limb 28 being shorter than the lower limb 29.
  • the free end of die frusto-conical locking skirt 22 on the closure has a tamper evident band 30 secured diereby by a fracture line 31 which extends circumferentially about the locking skirt 20 and which includes a hinge section 32.
  • the lower edge of the tamper proof band 30 has an inwardly directed protuberance 33 which, when the band is applied to the container, seats in the slot 27 and a finger tag 34 is provided on the frusto-conical locking skirt 22, the purpose of which will be explained hereafter.
  • the cap can be swung about hinge 32 to open the container as illustrated in Figures 14 and 15 and whilst it is possible to re-seal and lock the closure to the container, it is not possible to reconnect the fracture line 31, and thus it is evident to die user that the container has been opened.
  • By controlling the hinging movement of the closure it is possible to control the rate of release of gas from the container.
  • closure 1 seals to the container 2 in the same manner as described with reference to the embodiment illustrated in Figures 1 and 2 and for this reason no further description of the seal arrangement is necessary.
  • each half of the container 2 is provided with two downwardly directed "V" shaped channels 35 and 36 having walls 37 and 38 and 39 and 40.
  • the respective channels 35 and 36 are connected by a transverse section 41 having walls 42 and 43.
  • a transverse channel 44 and the walls 42 and 43 of the transverse section 41 are inclined in the direction of die respective channels as illustrated in Figure 16 to facilitate the entry of lock members 47 and 48 on die closure 1 into the respective channels.
  • the closure 1 has a tamper evident skirt 45 extending downwardly from die outer skirt 12 and connected thereto by a fracture line 46. Located on die inner surface of the wall 12 is and inwardly directed projection or lock member 47 and located on the inner surface of the tamper evident skirt 45 is a similar lock member 48.
  • the spacing between the transverse section 41 of the "V" shaped channels 37 and 39 and the transverse channel 44 is such that when the lock members 47 and 48 are engaged in the respective channels as illustrated in Figure 18, the closure 1 is se ⁇ ded and locked to the container with the tamper evident skirt secured to die outer skirt 12.

Landscapes

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

Abstract

Conteneur (2) et fermeture amovible (1) pour ledit conteneur, ledit conteneur comportant un orifice de sortie (3) doté de surfaces interne et externe (4, 5) se terminant à une extrémité par un bord (6). L'orifice de sortie possède deux régions à sections transversales différentes (7, 8) jointes par une surface inclinée (9), la section transversale de la région adjacente au bord étant supérieure à la section transversale de la région située à l'intérieur de la surface inclinée. La fermeture possède des collerettes interne et externe (11, 12) reliées à une extrémité par un disque (13) reliant ladite collerette interne et formant ainsi la fermeture. Les collerettes interne et externe (11, 12) définissent entre elles une fente qui, lorsque la fermeture est appliquée sur le conteneur, reçoit le bord (6) du conteneur, la collerette interne ayant une zone d'étanchéité (15) qui s'étend dans ladite fente. Les sections transversales de ces régions et la taille de la zone d'étanchéité sur la collerette interne (11) sont telles que lorsque la fermeture est appliquée sur le conteneur, la surface interne de la collerette interne (11) vient en contact avec la surface interne de l'orifice de sortie pour forcer la surface interne de l'orifice de sortie (6) adjacente au bord à former un contact d'étanchéité avec la zone d'étanchéité (15) pour établir l'étanchéité entre la fermeture (1) et le conteneur. Un dispositif peut permettre de verrouiller la fermeture (1) sur le conteneur.
PCT/AU1996/000195 1995-04-05 1996-04-04 Conteneurs et fermetures pour lesdits conteneurs WO1996031405A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU51379/96A AU712191B2 (en) 1995-04-05 1996-04-04 Containers and closures therefor
US09/035,075 US6041953A (en) 1995-04-05 1998-03-05 Containers and closures therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN2184 1995-04-05
AUPN2184A AUPN218495A0 (en) 1995-04-05 1995-04-05 Containers and closures therefor

Publications (1)

Publication Number Publication Date
WO1996031405A1 true WO1996031405A1 (fr) 1996-10-10

Family

ID=3786539

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000195 WO1996031405A1 (fr) 1995-04-05 1996-04-04 Conteneurs et fermetures pour lesdits conteneurs

Country Status (2)

Country Link
AU (1) AUPN218495A0 (fr)
WO (1) WO1996031405A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013701A1 (fr) * 1995-10-10 1997-04-17 Prelude Uk Limited Recipient en matiere plastique et son bouchon

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556338A (en) * 1968-08-09 1971-01-19 Jamco Inc Resilient closure having invested recess securing means
US3688942A (en) * 1970-11-20 1972-09-05 Continental Can Co Container and closure combination
AU3420678A (en) * 1978-03-16 1979-09-20 Polysar Resins, Inc Sealing of presson lid and container
WO1990006266A1 (fr) * 1988-11-28 1990-06-14 Goodall Donald T Dispositif de blocage deformable
AU7915691A (en) * 1990-06-19 1992-01-02 Containers Hi-Tech Pty Limited Double lock pail
GB2268734A (en) * 1992-07-14 1994-01-19 Lin Pac Mouldings Container and lid assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556338A (en) * 1968-08-09 1971-01-19 Jamco Inc Resilient closure having invested recess securing means
US3688942A (en) * 1970-11-20 1972-09-05 Continental Can Co Container and closure combination
AU3420678A (en) * 1978-03-16 1979-09-20 Polysar Resins, Inc Sealing of presson lid and container
WO1990006266A1 (fr) * 1988-11-28 1990-06-14 Goodall Donald T Dispositif de blocage deformable
AU7915691A (en) * 1990-06-19 1992-01-02 Containers Hi-Tech Pty Limited Double lock pail
GB2268734A (en) * 1992-07-14 1994-01-19 Lin Pac Mouldings Container and lid assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013701A1 (fr) * 1995-10-10 1997-04-17 Prelude Uk Limited Recipient en matiere plastique et son bouchon

Also Published As

Publication number Publication date
AUPN218495A0 (en) 1995-04-27

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