EP1322523A1 - Dispositif de fermeture en plastique dote d'un perforateur - Google Patents

Dispositif de fermeture en plastique dote d'un perforateur

Info

Publication number
EP1322523A1
EP1322523A1 EP01966937A EP01966937A EP1322523A1 EP 1322523 A1 EP1322523 A1 EP 1322523A1 EP 01966937 A EP01966937 A EP 01966937A EP 01966937 A EP01966937 A EP 01966937A EP 1322523 A1 EP1322523 A1 EP 1322523A1
Authority
EP
European Patent Office
Prior art keywords
piercer
closure device
screw cap
container
wall
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
Application number
EP01966937A
Other languages
German (de)
English (en)
Other versions
EP1322523B1 (fr
Inventor
Werner Fritz Dubach
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.)
Bericap Holding GmbH
Original Assignee
Terxo AG
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
Priority claimed from CH19392000A external-priority patent/CH695019A5/de
Application filed by Terxo AG filed Critical Terxo AG
Publication of EP1322523A1 publication Critical patent/EP1322523A1/fr
Application granted granted Critical
Publication of EP1322523B1 publication Critical patent/EP1322523B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening

Definitions

  • Locking device made of plastic with piercer
  • the present invention relates to a closure device made of plastic, which can be attached over a pierceable point of a closed container, according to the preamble of patent claim 1.
  • containers are available on the market, in particular suitable for the storage of flowable media, in which a film or membrane or even the packaging wall itself has to be pierced before the opening before the liquid medium can be removed from the container.
  • Such containers are, for example, so-called soft packagings made of single-layer or multilayer films or coated cardboard, on which a sealing device is glued or welded, the sealing device comprising a screw cap.
  • Closing devices for such packaging have a lower part which has a cylindrical pouring spout with an external thread and a lower, peripheral flange for attachment to the soft pack.
  • the screw cap Before the contents can be removed from the soft packaging mentioned, the screw cap must first be unscrewed from the lower part and on the other hand, the container wall in the area of the pouring spout is severed.
  • the closure device For the severing, the closure device has an integrated piercer for severing the container wall in the area of the container opening.
  • the screw cap is in a position that is displaced upwards towards the lower part before the first opening and is usually bridged by a guarantee band.
  • the guarantee tape must first be removed, whereupon the closure is screwed on completely, both the screw cap and the piercer stored in the pouring spout being moved downwards at the same time.
  • the screw cap is completely closed, the soft packaging is consequently pierced and opened.
  • the screw cap must now be completely unscrewed before the content is now freely accessible and can be poured out.
  • a typical representative of this closure version is known for example from WO 96/11850.
  • a closing device according to WO 99/64315 works in a similar manner. In this device, the piercer has two threaded sections in different directions of rise. In a first screwing motion, the piercer is pushed through the container wall and then the screw cap is unscrewed from the piercer in the opposite direction of rotation.
  • closures of this type are relatively new in soft packaging, such closure devices are almost Analog design for containers in the form of bottles, the container neck is sealed with a membrane or film, already known in various embodiments. Closure devices of this type have not proven themselves on the market. In addition to the ever-recurring sealing problems, the main problem is that the opening does not correspond to the habits of the consumer. As a result, detailed explanations of how to open the packaging must appear on the packaging. This is not only undesirable, but experience has shown that these explanations are hardly considered and in many cases the consumer only reads these explanations after he has already destroyed the closure or rendered it ineffective.
  • WO 99/42375 proposes a device in which a piercer interacts interactively with a screw cap in such a way that when the screw cap is simply unscrewed, the piercer is simultaneously moved in such a way that it is conveyed downward and pierces the packaging wall ,
  • This closing device is absolutely easy to use and convenient for the consumer.
  • the problem with this closure is the fact that the piercer has to be adhered to the packaging wall. The severed part of the packaging wall thus sticks to the piercer. The edges of the packaging wall remaining on the piercer remain firmly connected to it even after the first opening. The piercer itself remains in the screw cap and is carried out when the screw cap is opened.
  • a closure device forming the preamble of claim 1 is known from EP-A-0 '328' 652. This is extremely easy to use, as the piercer is moved linearly downwards when the screw cap is unscrewed for the first time, thus cutting through the membrane or the wall of the container.
  • FIGS. 2 to 4 show a similar closure in its individual parts in a perspective position, wherein
  • FIG. 3 shows the push-through also slightly from above
  • Figure 4 shows the screw cap with a slight view from below.
  • FIG. 5 shows a top view of a variant of the screw cap with a view of the inner surface of the screw cap.
  • the closure device which is designated overall by 1 and is shown here in a diametrical vertical section.
  • the position shown here shows the closure device 1, which is attached to a container B.
  • the container here is a soft packaging made from a film or a multilayer film F.
  • Soft packaging is understood to mean containers which are made from a coated cardboard or from a laminate film and which have a predetermined opening point S, which is indicated by a corresponding Embossing punch P is specified. With such an embossing, certain layers of the film F are severed, while the layers or layer lying on the inside remain uninjured.
  • the solution according to the invention can also be used for soft packaging in which a corresponding opening has already been stamped. While in the first variant the lower part 2, which is still to be described, is welded or glued to the outside of the film F, the fastening in the second variant is carried out either by welding or gluing to the outside or inside, in the latter case the lower part 2 already existing opening penetrates. In the latter two variants, a corresponding membrane is then provided which is to be pierced.
  • the solution according to the invention can also be implemented in such a way that the lower part 2 is an integral part of the container.
  • the lower part 2 corresponds to a correspondingly designed container neck.
  • the lower part 2 is shown in detail in FIG. 2.
  • the lower part 2 has the shape of a bung. It consists of a flange 21, the bottom or surface of which forms a welding or adhesive surface 22.
  • the closure device 1 is thus connected to the container B by means of the flange 21.
  • the flange 21 is integrally formed in one piece on the lower edge of the cylindrical pouring spout 20.
  • the cylindrical pouring spout 20 has a coarse, multi-start internal thread 24 with a relatively small thread height.
  • the cross section of the threads is preferably trapezoidal.
  • the upper flank of the threads in the installed position is inclined, while the lower flank projects practically at right angles from the cylindrical wall of the pouring spout 20 radially inwards.
  • the pouring spout 20 has an external thread 23 on its outer cylindrical wall. While in the embodiment according to FIG. 1 this external thread extends practically over the entire height of the pouring spout 20 and has a conventional thread, FIG.
  • the external thread 23 is arranged only in the lower region and is designed as a fine thread.
  • a fine thread not only saves material, but also has the additional advantage that no exact angular positioning is required during assembly.
  • the fine thread selected here can be selected because, in contrast to solutions of the prior art, the axially occurring forces do not have to be absorbed by the screw cap 4 when the piercer is actuated. By means of the screw cap 4, only radial movements are exerted on the piercer, the thread between the screw cap 4 and the lower part 2 remaining practically unloaded. Between the external thread 23 and the flange 21, an annular stop bead 25 is formed on the pouring spout 20 below.
  • This stop bead 25 absorbs the forces which act on the lower part 1 when the screw cap 4 is pressed on.
  • the screw cap 4 can thus be pressed directly onto the stop bead 25 up to the stop.
  • the stop bead 25 can additionally have positive locking means, not shown here, which can cooperate with a guarantee band on the screw cap 4. On such guarantee tape is not the subject of the invention and is accordingly omitted in the drawing to relieve it.
  • a correspondingly designed piercer 3 fits into the pouring spout 20 of the lower part 2.
  • the piercer 3 has the shape of a cylindrical tube piece. This piece of pipe is formed by a cylindrical wall 30, which is provided with an external thread 31, the design of which is adapted accordingly to the internal thread 24 of the lower part 2.
  • This external thread 31 in turn has a relatively low thread height.
  • the upper flank 35 here is very steep or at least approximately perpendicular to the cylindrical wall 30.
  • the lower thread flank 36 in the installed state is relatively strongly inclined.
  • this design form permits improved demolding from the injection mold and, on the other hand, facilitates the ratchet-shaped insertion of the piercer 3 into the lower part 2.
  • the lower edge of the piercer 3 is designed as a cutting edge 32.
  • the cylindrical wall 30 is formed inclined from the outside inwards and forms a sharp-edged cutting edge. Perforation teeth 33 can additionally be formed on the cutting edge 32.
  • the cylindrical wall 30 has at least one driver 34 protruding toward the center on its inner surface. Depending on the design, however, two or four such carriers 34 will be attached. In the embodiment according to FIG. 3, these drivers 34 are designed as cams which have an approximately rectangular cross section. However, the drivers 34 can also be designed continuously as ribs running in the axial direction.
  • the lower part 2 and the piercer 3 can be produced in one piece in the vertical direction, aligned axially with one another, with their connection points being connected to one another via a plurality of predetermined breaking bars. In this way, assembly can be carried out in a particularly simple manner by merely pressing the two parts into one another. There is no need to align the two parts with each other because they are already correctly manufactured in the correct angular position to one another during production.
  • the screw cap 4 is shown in FIG. 4. It consists of the cover surface 40 and the circumferential jacket wall 41.
  • the internal thread 42 is formed on the inside surface of the jacket wall 41 and cooperates with the external thread 23 on the pouring spout 20. Accordingly, this thread is also designed as a fine thread.
  • Centered on the top surface 40 an annular wall 43 is formed. This is dimensioned such that it finds space 3 with a certain space in the interior of the piercer.
  • the annular wall 43 has no sealing function, but essentially serves to drive the push-through device 3.
  • the annular wall 43 has form-locking means which can interact with the drivers 34 on the inner wall of the cylindrical wall 30.
  • these positive locking means can be a driver groove 44 in which the driver 34 can slide, or the positive locking means can be designed as a driver rib 45.
  • the driver rib 45 lies laterally against the driver 34 when actuated.
  • the driver 34 can, as already mentioned, be designed either as a cam or as a longitudinal rib.
  • the form-locking means can also be designed without the ring wall 43.
  • FIG. 5 a view from below into the inside of a screw cap 4 is shown.
  • the jacket wall 41 with the internal thread 42 is integrally formed on the cover surface 40.
  • annular wall 43 instead of an annular wall 43, however, two crossing walls are formed here, which are perpendicular to the top surface 40 and which define four driving ribs 45.
  • This solution is particularly suitable for closure devices with a smaller diameter.
  • the closure device according to the invention can be attached to a soft packaging, the connection between the soft packaging and the closure device 1 being made via the lower part 2.
  • the lower part 2 itself forms part of a container.
  • it can also make sense to design the lower part as an adapter in order to form the connection to an existing spout on any container.
  • the piercer 3 can be made in one piece with the lower part 2. The two parts are then aligned with one another.
  • Such a solution can be implemented by integrally molding the piercer above the lower part 2, but of course the reverse arrangement is also possible, the piercer 3 being integrally formed below the pouring spout 20 with this over predetermined breaking points.
  • the latter variant has the advantage that it does not affect the design of the cutting edge.
  • the cutting edge 32 can of course be toothed.
  • the design of the cutting edge 32, whether with or without perforation teeth 33, with a straight or serrated cutting surface, will essentially depend on the material from which the container B or the membrane to be opened by the piercer is made.
  • the design of the cutting edge can be specifically molded onto the material to be cut. With such a specific design, three different areas of action can be defined.
  • the first area of action consists of the perforation teeth 33 which, in a first step, perforate the material. In the direction of rotation directly following the perforation tooth, cutting areas 37 will be provided which effect a cutting cut through the material.
  • the cutting edge can pass into a blunt widened region 38 which is the farthest away from the perforation tooth in the axial direction and only the displacement of the cut container wall or membrane from the area of the pouring opening.
  • the great advantage of the solution according to the invention is that there are practically no forces in the axial direction on the screw cap during actuation.
  • This advantage also pays off in relation to the use of a guarantee band.
  • guarantee tapes which are separated from the screw cap directly when it is screwed on, are connected to the screw cap by corresponding predetermined breaking points, and these predetermined breaking points have to be released by exerting an axial force that occurs when the cap is screwed on. Because this force in the known solutions of a closure device of the type of interest here cooperates with the axial force to be exerted on the piercer, or adds up, the total force that was required for the opening was enormous. The use of a fine thread would be unthinkable from the outset.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Lock And Its Accessories (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

La présente invention concerne un dispositif de fermeture (1) destiné à un récipient (B) présentant une partie inférieure (2) en forme de languette comprenant un bec cylindrique (20). Le bec cylindrique comporte un filetage interne dans lequel peut être maintenu par vissage un perforateur cylindrique (3) ouvert des deux côtés et comportant un filetage externe (31). Sur la partie inférieure peut être mis en place un capuchon à vis (4) qui présente des agents d'entraînement (44, 45) qui interagissent avec des éléments d'entraînement (34) appartenant au perforateur (3). Entre le capuchon à vis (4) et la partie inférieure (2) se trouve un filetage fin, et entre la partie inférieure et le perforateur se trouve un filetage grossier. Le mouvement combiné de rotation et de translation du perforateur, et la sélection des filetages permettent d'obtenir un mouvement de découpage extrêmement efficace.
EP01966937A 2000-10-03 2001-09-27 Dispositif de fermeture en plastique dote d'un perforateur Expired - Lifetime EP1322523B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH19392000A CH695019A5 (de) 2000-10-03 2000-10-03 Kunststoff-Verschlussvorrichtung mit Durchstosser.
CH193900 2000-10-03
CH218100 2000-11-09
CH21812000 2000-11-09
PCT/CH2001/000582 WO2002028728A1 (fr) 2000-10-03 2001-09-27 Dispositif de fermeture en plastique dote d'un perforateur

Publications (2)

Publication Number Publication Date
EP1322523A1 true EP1322523A1 (fr) 2003-07-02
EP1322523B1 EP1322523B1 (fr) 2008-11-26

Family

ID=25739026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01966937A Expired - Lifetime EP1322523B1 (fr) 2000-10-03 2001-09-27 Dispositif de fermeture en plastique dote d'un perforateur

Country Status (8)

Country Link
US (2) US7036683B2 (fr)
EP (1) EP1322523B1 (fr)
JP (1) JP2004509816A (fr)
AT (1) ATE415351T1 (fr)
AU (1) AU2001287479A1 (fr)
CA (1) CA2424538A1 (fr)
DE (1) DE50114527D1 (fr)
WO (1) WO2002028728A1 (fr)

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US10676261B2 (en) 2017-09-07 2020-06-09 Silgan White Cap LLC Closure assembly

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TWI673210B (zh) * 2014-10-24 2019-10-01 日商美樂迪安股份有限公司 附有流出口之容器及其製造方法
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EP3760578A1 (fr) 2015-06-10 2021-01-06 Liqui-Box Corporation Procédé permettant de distribuer un fluide à partir d'un récipient souple et procédé d'assemblage d'une vanne de perçage pour un récipient souple
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US10676261B2 (en) 2017-09-07 2020-06-09 Silgan White Cap LLC Closure assembly
US11718457B2 (en) 2017-09-07 2023-08-08 Silgan White Cap LLC Closure assembly

Also Published As

Publication number Publication date
US20040104245A1 (en) 2004-06-03
EP1322523B1 (fr) 2008-11-26
CA2424538A1 (fr) 2003-04-02
AU2001287479A1 (en) 2002-04-15
US7036683B2 (en) 2006-05-02
ATE415351T1 (de) 2008-12-15
US20060144852A1 (en) 2006-07-06
JP2004509816A (ja) 2004-04-02
WO2002028728A1 (fr) 2002-04-11
DE50114527D1 (de) 2009-01-08

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