EP0842093A1 - Fermetures pour recipients - Google Patents

Fermetures pour recipients

Info

Publication number
EP0842093A1
EP0842093A1 EP96918747A EP96918747A EP0842093A1 EP 0842093 A1 EP0842093 A1 EP 0842093A1 EP 96918747 A EP96918747 A EP 96918747A EP 96918747 A EP96918747 A EP 96918747A EP 0842093 A1 EP0842093 A1 EP 0842093A1
Authority
EP
European Patent Office
Prior art keywords
container
closure
carton
plug
recess
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.)
Withdrawn
Application number
EP96918747A
Other languages
German (de)
English (en)
Inventor
James Hall
Michael James Michael
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.)
SIG Combibloc Ltd
Original Assignee
SIG Combibloc Ltd
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 SIG Combibloc Ltd filed Critical SIG Combibloc Ltd
Publication of EP0842093A1 publication Critical patent/EP0842093A1/fr
Withdrawn legal-status Critical Current

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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • B65D5/708—Separate tearable flexible elements covering a discharge opening of a container, e.g. adhesive tape

Definitions

  • This invention relates to a re-closable closure device for use on containers.
  • the closure of the invention has been designed for application to cartons for use in li ⁇ ui ⁇ packaging, but is suitable for use with all kinds of containers including ⁇ gi ⁇ or flexible plastics, for a variety of materials including pow ⁇ ers and granules as well as li ⁇ uids.
  • Cartons used for packaging liquids are well known, for example cartons for containing milk, fruit juice and the like.
  • Such cartons are generally made from a one-piece blank of carton board, coated on both sides with polyethylene
  • the canon blank is folded to close the bottom and to provide either a slant top. a flat top or an upstanding (gable) too and. after filling, the carton is hermetically sealed.
  • the top is usually folded back and opened out to provi ⁇ e a pouring spout.
  • the carton can be re-closed by folding the pouring spout back in again
  • US Patent No 4 934 59 ⁇ describes a separately attachable plastics closure for a carton
  • a rigid lever is pushed downward and rotates nearly 180°
  • a portion of the lever penetrates a scored area of the canon and eventually, another po ⁇ ion of the lever seats over the opening of the carton to provide a pouring spout
  • a removable cover is then positioned over the ODening, so that re-opening and re-closing of the carton occurs by removing the cover
  • the material, manufacturing and application costs of this closure device are high when compared to the standard price of a carton without a fitment and. although this fitment can be flatter than a protruding screw cap. it still provides a rigid upstanding protrusion which can interfere with the general han ⁇ ling of the carton
  • One asDect of the present invention provides a sealed container, such as a canon, having a re-ciosaole device including a plug received in a recess and a generally planar memoer which is pivotable with res ⁇ ect to the container to remove the plug from the recess and break the seal
  • the plug may seat in the opening to close it. but it may be lifted clear by rotating the film member about its hinged region
  • Such an arrangement (in closed condition) can lie flat on the container sun ' ace and extend only a millimetre or two above the surface.
  • the seal is preferaoly a hermetic seal so that the container can contain pe ⁇ snable product such as miik
  • the plug may be a snap fit in the recess. Althougn the reDiacement of the plug in the recess will not reseal the container it will prevent the ingress of dust and help to minimise spillage should the container be knocke ⁇ over
  • the recess wnicn receives the plug may comD ⁇ se a hole in the wall of the container, in wnicn case the plug may comprise a portion of the container wall.
  • the plug may De weakly joine ⁇ to the container wail, for example via a score line, to form the seal, and thus when the plug is removed the seal is broken but the plug can still be reDlaced.
  • the container may be seaie ⁇ by means of a film covering a hole in the container wail, a portion of whicn is attacne ⁇ to the plug to be removed on lifting the plug to reveal the hole.
  • the closure comprises two generally planar members, one of which covers a hole in the container and may provide the recess for receiving the plug, and the other of which is pivotable to replace or remove the plug.
  • another aspect of the invention provides a container closure comprising first and secon ⁇ generally planar members, in wnich the first member covers a hole in the container in use and the second memDer is pivotable with respect to the container to return or remove a plug to or from the hole.
  • the first member is laminated to the secon ⁇ member and the plug is attached to the first member.
  • the whole closure may be pivotable with respect to the container.
  • the second member is pivotable with resDect to the first.
  • the first memDer may be secured to the container to cover the hole.
  • the closure device may be bonded to the container on one side only of the hole, or on two or more sides of the hole.
  • Many suitable methods for attaching the closure device to the container will be known in the art.
  • the closure ⁇ evice of the invention may be bonded to the container either by using adhesives or Dy ultrasonically welding the closure device to the container.
  • the first memDer may comprise a pouring lip arranged to extend over an edge ofthe container Thus liquid is directed over the edge of the container and not down the face of the container on pouring, and the lip cleanly cuts off the flow of liqui ⁇ wren returning the container to the upright position.
  • the lip preferably ovemangs an e ⁇ ge of the container by at least 1mm
  • the first memoer may be made of a thin resilient material such as polyethylene tape or foil which, being flexiDle springs back after being pushed or taped down.
  • This amount of overhang is generally unacceptable, on the ground that it catches on the filling machine and/or interferes with other containers during subsequent packaging operations.
  • a film member made of a thin resilient material acts successfully as a pou ⁇ ng lip with, for example, a 1mm overhang without being unduly obtrusive
  • a material may be applied to the container blank or sleeve at fast speed by label-type applicators.
  • the secon ⁇ memDer may comprise the plug.
  • the plug may be attached to the second member. Either way, the plug may be generally planar
  • the first memoer may define a recess for receiving the plug.
  • the piug may be weakly connecte ⁇ to the first memoer to form a seal.
  • the plug may be a snap fit in the recess
  • the first memDer may define a channel for receiving the second memoer.
  • the second member may be received in the channel as a snap fit. for example by undercutting part or ail of the edges of the channel.
  • the container can be embossed as a means of flow control. Thin ridges or grooved channels give some side control to liquid flow.
  • the closure device may have sidewalls. which must of course be sufficiently low in height to ensure that they do not interfere with container stacking. It is less important to provide means for preventing the liquid from spreading across the toD of slant top (gable) cartons. For flat top cartons, sidewalls of at least 1mm nigh are Dreferred.
  • the side wails may fold flat. For example, the side wails may fold inwardly towards each other over the pivotable member. This feature could be used to provide tamper evidence.
  • the sidewalls could be incorporated in the first generally planar memoer.
  • the present invention provides a closure device which, in closed condition, is substantially flat in appearance, and which thus does not interfere with the stacKing of cartons or blanks or other containers during production, or with their presentation in suDermarkets etc.
  • the height of a closure device of the present invention (in closed condition) may be 2mm or less.
  • the closure device of the invention can be produced and applied to cartons or other containers at a low cost. Previously, separately attachable plastics closures have had to be applied to cartons on the filling machine, involving large capital investments in applicator costs for each individual customer: whereas the thin closure device of the present invention can also be attached to the carton blank, eliminating any major capital investment for carton customers.
  • the present invention also provides a carton or carton blank or other container having the above-described closure device applied thereto, so as to open and close an aperture formed in a wall of the container.
  • a carton may be made from any suitable sheet material suen as. for example, carton board coated on both sides with a plastics material such as polyethylene, or from unprinted fibre board.
  • the aperture formed in the container can be of any shape, but is preferably pear-shaDe ⁇ . whicn shape has been found to be very effective for pouring.
  • the width of the widest part of the pear snape controls the flow rate, and the narrowest part reduces "glugging".
  • the pear-shape ⁇ aperture is about 20mm long, with a radius of about Smm at its widest part and of about 3mm at its narrowest part (but these dimensions are merely examples, and other size apertures can be used).
  • "Glugging" can be eliminated by providing a vent feature or hole in the container, if glugging is perceived to be a problem.
  • the aperture in the carton can be cut in any position which suits the attachment of the closure ⁇ evice and pouring of the container contents.
  • the closure device may also include a tamper-evident feature if desired, to indicate when the initially closed device has been opened for the first time.
  • the planar member which is pivotable with respect to the container includes finger grip means.
  • This further member may be weakly secured to the closure or container to provide tamper evidence.
  • planar members described above may be in the form of thin films.
  • Another aspect of the invention provides a method of assembling a flat walled carton including cutting a flat carton blank having an access hole, and securing a separately formed closure over the access hole with the blank in the flat configuration.
  • the cartons can be filled and sealed in the usual way without the need for any modifications to current machinery.
  • slightly modified magazines wiil be required to handle stacks of cartons according to the invention.
  • Two edges of the carton blanks are usually sealed together to form a flat sleeve, before supplying to customers. This can be carried out either before or after the application of the closures.
  • the cartons are erected using existing machinery, one end is sealed, the cartons are filled and then their tops are sealed.
  • Figure 1 illustrates a first embodiment of closure device in accordance with the present invention
  • FIG. 2 illustrates a second embodiment of closure device in accordance with the Dresent invention:
  • Figure 3 is a Dian view of the second embodiment of closure device illustrated in Figure 2:
  • Figure 4 illustrates a carton having a third embodiment of a closure device of the present invention appiied to its top face:
  • Figure 5 is a pia ⁇ view of the third embodiment of closure device illustrated in Figure 4:
  • Figures 6 (a) to (f) are various views of a further closure according to the invention.
  • (a) being a Dian view of the closure in its closed configuration
  • Xe) a plan view of the closure fully open and (f) an end elevation viewed along arrow A in Figure 6 (e)
  • a closure device 10 is shown on a carton 12 which has a gable top 14.
  • a first plastics film 16 is adhered to the carton 12 and provides a pouring lip 18.
  • a second plastics film 20 carries a thin plug 22.
  • the plug shown in Figure 1 is comprised of a square-shaped plate portion 24 and a protruding portion 26 of the same shape as a pouring aperture 28 cut in the carton 12.
  • the portion 26 of plug 22 must then be of the same shape, so as to fit into the aperture to close it.
  • a "click shut" effect is achieved as portion 26 of plug 22 penetrates the carton ape ⁇ ure 28 to thereby re-close the carton after first opening.
  • the carton must always be hermetically sealed until the first opening of the re-openable closure device. This may be achieved by having a membrane between the plug 22 and pouring ape ⁇ ure 28. Alternatively the membrane may be inside the carton and may have a portion adhered to the plug portion 26 to be pulled through the pouring aperture and break away from the remainder on the first opening.
  • the first plastics film 16 may be a thin polyethylene or foil tape or a slightly more rigid layer or thin sheet. This may also be shaped to give some side control to liquid flow (not shown).
  • the plastics film 16 may be bonded to the carton, for example, with adhesives or by ultrasonic welding.
  • the second plastics film 20 may also be a thin polyethylene or foil tape, and the piug 22 may ce made of a thin layer of plastic.
  • the film 20 may be pulled up. so that it rotates about a hinge region 34. to thereby pull portion 26 of plug 22 out of the aperture 28 to open the carton 12.
  • the tape 20 may then be lowered so that po ⁇ ion 25 of piug 22 clicks into the aperture 28 so as to re-close the carton 12.
  • the Iower edge 36 of the piug 22 can rest against the carton 12 and the plug 22 thus remains substantially upright with the aperture open for pouring.
  • a second embodiment of closure device 40 is shown on a flat top carton 42.
  • a first plastics film 44 is adhered to the carton 42. so as to cover an aperture in the carton 42. and provides an aperture 56 and a pouring lip 46 to direct liquid from aperture 56 over the edge 48 of the carton 42.
  • a second plastics film 50 carries the piug and is positioned over film 44 in the close ⁇ configuration, overhanging the carton edge. Both plastics films 44.50 may be of foil or polyethylene.
  • a thin relatively rigid plastics square 55 is bonded onto the outside of plastics film 50.
  • the plastics square is cut so as to provide a middle region, which forms the opening piug 52. and two side panels 60.
  • a "click shut" effect can be achieved by under-cutting the edges of side panels 60 (thereby providing a corresponding angle on the sides of the walls of plug 52).
  • the foil or polyethylene film 50 is pulled up so that it rotates about a hinge region 54, carrying the plug 52 with it. so that the plug 52 no longer covers the pouring aperture 56.
  • the wails of the side panels 60 provide some side control to liquid flow.
  • the rigid plastics square could be sandwiched between films 44 and 50. as shown in Figure 3 in - J ⁇ 206
  • Figure 3 shows the plug 52 in its closed condition.
  • the piug 52 may then be lifted clear of the aDerture 56 by rotating film 50 about its hinged region 54
  • the foil or polyethylene fiim 50 may be folded back and bonded weakly to the top surface of piug 52 or film 50 This Dond then breaks when film 50 is pulled UD to rotate about its hinge region 54
  • double sided taDe 51 may be used to attach the film 50 to the top su ⁇ ' ace of the plug 52. wnen the plug is in its closed position. This may provi ⁇ e a degree of tamper-evioence.
  • the film 44 may include a tear away portion in the shape of a hole 56 which is lifted with the piug 52 at the first opening of the carton to ODen the aperture 56.
  • a flat top carton 72 having a third embodiment of closure device 70 bonded to its top face.
  • Plastics film 74 is adhered to the top of the carton 72 and provides a pouring aperture and lip 76.
  • the second plastics or coated paper film 78 carries the plug 80 which may be cut out from the first film 74
  • the entire closure device may be made of a thin plastic, coated Daper. or foil. As the film 78 is pulled up so that it rotates about hinge region 82. it carries plug 80 with it. so that plug 80 is moved from its closed position, in which the aperture is closed, to an open position in which the aperture is open for pouring.
  • Sidewalls 84 are Drovided to contain the liquid from spreading across the carton. The side walls fold over towards each other to hold down piastics film 78 so as to re-close the carton.
  • FIG. 5 shows this closure device in plan view, and like parts are designated the same numpers
  • the closure device 70 is shown in its closed condition. If the closure ⁇ evice 70 was to overlie an aperture in a carton, the piug 80 (see Figure 4) would be seated over the aperture to close it. and would be lifted clear by lifting film member 78 and rotating it about its hinged region 82.
  • Sidewalls 84 fold inwardly towards each other so as to hold down plastics film 78 which carries the plug, when the closure device is in its closed condition.
  • film member 78 is lifted and rotated about its hinged region 82.
  • the sidewalls 84 no icr-ger fold flat, but are moved to be upstanding so as to provide sidewalls 84 of. for example, at least 1mm high.
  • the sidewalls 84 prevent liquid from SDreading across the top of a carton during pouring.
  • closure device could be cut out of a web of material as a singie piece, that is to say, material is cut and creased on a rotary cutter, then suDsequently formed into a design with sidewalls which fold flat.
  • side wail portions 84 can be folded inwardly from the edges of base film 74 and film member 78 could be formed as an extending tab from the same piece of film. It may also have an inner polyethylene patch and/or a tamper pull tab (not shown).
  • FIG. 6 illustrates a further closure device according to this invention.
  • This closure device 100 is again designed to be secured over a hole in a carton.
  • the device generally comprises three planar members which overlie each other in the dosed configuration, namely a base member 101 which lies against the carton surface in use. a lid member 102 which is pivotable with respect to the base member to open or close the closure, and a handle or tab member 103 which is pivotable with respect to the lid member 102 and is used for lifting the lid member 102.
  • Each of the three members 101. 102. 103 is in the form of a relatively rigid plastics film or thin sheet.
  • the closure may be injection moulded as one piece, preferably in the open flat configuration shown in Figure 6 (e).
  • the base member 101 includes a lip portion 105 wnich typically overhangs the carton e ⁇ ge in use to Drovide a pouring lip.
  • a slightly thicker central region 106 includes a central plug portion 107.
  • the outline of the plug portion 107 is a weaK moulded break line so that it is weakly attached to the remainder of the central portion 106
  • the base member 101 includes thicker side regions 108 " 39 wnich define a channel for receiving the lid memDer 102.
  • the edges of regions 108. 109 are slightly undercut and the lid member 102 is likewise snaped. at least at ends remote from the pivot e ⁇ ge. so that the lid memDer 102 is received between regions 108. 109 as a sna ⁇ fit (The same edge cutting feature can be used to achieve a " click-shut effect in the foregoing embodiments of the invention)
  • the lid memDer 102 is moulded as a flat sheet weakly attached to the base member 101 so as to be pivotable with respect to the base member.
  • a slight circular indentation 115 may be provided to facilitate gripping the handle member 103
  • the portion adjacent the hinge axis may be slightly narrowed so that only the forward e ⁇ ges snap fit in the base member.
  • the handle member 103 is generally planar and includes a ring portion for manual gripping
  • the arcuate region remote from the pivot e ⁇ ge may ⁇ e slightly thicker Side tabs 116. 117 overnang the side regions 108 109 of the base.
  • the completed closure 100 is folded concertina-wise with the lid portion 102 overlying the base member 101 and the handle member 103 folded back over the lid member 102.
  • the lid member is then attached to the plug portion 107 of the base member, for example by heat staking.
  • the tabs 116. 117 of the handle member 103 are attached to side regions 108. 109. again preferably by heat staking.
  • the attachment of the side tabs 116. 117 to the base portion 101 is an optional feature mainly intended to provide tamper evidence but also useful for ensuring that the closure remains flat during handling.
  • the closure is now ready for application to a carton.
  • the carton is provided with a hole ano the closure is secured over it. for example by adhesive. This operation may be carried out with the carton still in its flat configuration, either as an ODen blan ⁇ or a folded sleeve. Once the closure has been secured to the carton the carton can be assembled and filled in the usual way, without the need for additional e ⁇ uipment.
  • the closure is opened as follows: The ring portion of the handle portion 103 is lifted to break the tabs away from the side regions 107. 108. and then lifted further to pivot lid portion 102 anti-clockwise as shown in Figure 6 (d). The attachment of the plug portion 107 to lid portion 102 is made sufficiently strong that the plug po ⁇ ion becomes detached from base po ⁇ ion 101 and stays attacned to lid po ⁇ ion 102. as indicated by dotted lines in Figure 6 (e). The hermetic seal of the canon is now broken, but the closure can be reclosed by replacing the lid portion over the base portion.
  • the preferred material for this closure is a plastics material such as polypropylene or me ⁇ ium density polyethylene although other materials may prove suitable.
  • the third planar member 103 could be emitted and the memDer 102 could simply be lifted with a fingernail. Tamper evidence, if required, could then be built in by suitable modifications to member 102.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

Diverses fermetures pour récipients constituées d'un ou plusieurs éléments plans de sorte qu'ils soient maintenus sensiblement à plat contre la paroi du récipient, par exemple du carton. Les différentes fermetures (10) formées séparément comprennent généralement un premier (16) et un second (20) élément, dont l'un peut pivoter par rapport au carton (12), ce qui permet de replacer un bouchon (22) dans un trou (28) percé dans le carton ou le second élément.
EP96918747A 1995-06-19 1996-06-18 Fermetures pour recipients Withdrawn EP0842093A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9513009 1995-06-19
GBGB9513009.2A GB9513009D0 (en) 1995-06-19 1995-06-19 Carton closure
PCT/GB1996/001451 WO1997000206A1 (fr) 1995-06-19 1996-06-18 Fermetures pour recipients

Publications (1)

Publication Number Publication Date
EP0842093A1 true EP0842093A1 (fr) 1998-05-20

Family

ID=10776699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96918747A Withdrawn EP0842093A1 (fr) 1995-06-19 1996-06-18 Fermetures pour recipients

Country Status (5)

Country Link
EP (1) EP0842093A1 (fr)
AU (1) AU6130496A (fr)
GB (2) GB9513009D0 (fr)
WO (1) WO1997000206A1 (fr)
ZA (1) ZA965194B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072439A1 (fr) * 2001-03-14 2002-09-19 Ds Smith (Uk) Limited Dispositif de fermeture a couches
DE10126742B4 (de) * 2001-05-31 2004-12-02 Sig Combibloc Systems Gmbh Wiederverschließbares, aus Folienmaterial hergestelltes Ausgießelement und Packung mit einem solchen Ausgießelement
FR2966444B1 (fr) 2010-10-21 2012-11-16 Valois Sas Organe de bouchage, distributeur de produit fluide comprenant un tel organe et procede de fabrication d'un tel distributeur.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770325A (en) * 1986-07-29 1988-09-13 International Paper Company Pour spout for containers
US4732315A (en) * 1987-03-10 1988-03-22 The Procter & Gamble Company Dispensing package
JPH0523467Y2 (fr) * 1988-10-31 1993-06-16
DE4015119A1 (de) * 1989-07-10 1991-01-31 Pkl Verpackungssysteme Gmbh Quaderfoermige giebelpackung mit im bereich des flachdachs angebrachtem ausgiesser
JPH0627542Y2 (ja) * 1990-02-28 1994-07-27 日本製紙株式会社 開口装置付きの密閉紙容器
SE9200391L (sv) * 1992-02-11 1993-08-12 Tetra Laval Holdings & Finance Öppningsanordning

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9700206A1 *

Also Published As

Publication number Publication date
GB9726061D0 (en) 1998-02-04
GB9513009D0 (en) 1995-08-30
GB2316938A (en) 1998-03-11
AU6130496A (en) 1997-01-15
ZA965194B (en) 1997-12-19
WO1997000206A1 (fr) 1997-01-03

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