EP1509456B1 - Self-opening closure for composite packagings or for container connection pieces closed by a film material - Google Patents

Self-opening closure for composite packagings or for container connection pieces closed by a film material Download PDF

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Publication number
EP1509456B1
EP1509456B1 EP03718593A EP03718593A EP1509456B1 EP 1509456 B1 EP1509456 B1 EP 1509456B1 EP 03718593 A EP03718593 A EP 03718593A EP 03718593 A EP03718593 A EP 03718593A EP 1509456 B1 EP1509456 B1 EP 1509456B1
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EP
European Patent Office
Prior art keywords
sleeve
self
spout
opener
rotary cap
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.)
Expired - Lifetime
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EP03718593A
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German (de)
French (fr)
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EP1509456A1 (en
Inventor
Mario Weist
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SIG Services AG
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SIG Technology AG
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Publication date
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Publication of EP1509456A1 publication Critical patent/EP1509456A1/en
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Publication of EP1509456B1 publication Critical patent/EP1509456B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid 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
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid 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
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/72Contents-dispensing means
    • B65D5/74Spouts
    • B65D5/746Spouts formed separately from the container
    • B65D5/747Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748Spouts 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

  • This invention relates to a self-opener closure for composite packages as well as closed with foil material container necks or necks of all kinds. It is especially thought of liquid packages in the form of such composite packages of foil-coated paper in which about milk, fruit juices, all kinds of non-alcoholic drinks or liquids in general from the Non-food area to be packed.
  • the closure can also be used for composite packages in which bulk goods such as sugar, semolina or all kinds of chemicals and the like are stored or packaged.
  • This film-coated paper is a laminate material, such as a paper or board web coated with plastic such as polyethylene and / or aluminum. Common volumes of such packages range from 20cl up to 2 liters and more.
  • the self-opening closure can also be mounted on containers that are closed by a foil material, for example on all kinds of bottles made of glass or plastic or on similar containers.
  • a foil material for example on all kinds of bottles made of glass or plastic or on similar containers.
  • Such closures made of plastic are known in various designs. When formed into a composite package, they essentially form a spout neck radially from its lower edge projecting edge, which forms a final flange on this spout.
  • the nozzle is equipped with an external thread on which a rotating cap can be screwed as a closure.
  • Such a self-opener closure is flanged onto the composite package by sealingly sealing it to the composite package with the underside of its cantilevered edge, that is, the underside of its flange.
  • the free passage at the bottom of the nozzle is then closed by the paper and the sealing film of the composite package.
  • the spout is in turn plugged or screwed onto a bottle mouth and closed on its inside with a foil membrane.
  • the nozzle is equipped with an external thread on which then the rotary cap can be screwed as a closure.
  • the film-reinforced paper passing through below the welded-on nozzle or the film membrane running inside the nozzle must be cut open, torn open or pushed away to open the passage and allow the liquid or bulk material to be poured out of the container through the nozzle.
  • a sleeve or nipple is arranged in the interior of the nozzle, which is taken along when turning the screw cap of this and is therefore rotated by this in the same direction of rotation.
  • This moves when unscrewing the rotary cap, that is, when this moves against the liquid pack upwards, steadily down .
  • the lower edge of the sleeve is equipped with one or more rip or cutting teeth.
  • the sleeve is due to their rotation and steady downward movement to push out or cut out a disc from the film-reinforced paper or foil membrane passing under it.
  • the slowly downwardly moving and simultaneously rotating sleeve touches with its entire lower edge almost simultaneously the foil-reinforced paper foil to be cut and presses it all down and turns on it until a hole is more scraped or broken through rather than cut.
  • One problem is that the foil to be sliced avoids something downwards to the pressure of the sleeve, which acts as a drill bit to some extent, and thus the sleeve no longer acts on a flat paper foil, but on a downwardly curved one.
  • a self-opener closure for composite packages as well as sealed with film material container neck consisting of a nozzle which is sealingly mounted on a composite package or on a closed container with film material, an associated rotary cap and a disposed within the nozzle self-opener, which from the rotary cap is set into rotation
  • the self-opener closure is characterized in that the inside of the nozzle is equipped with at least two distributed around its inner circumference arranged guide webs with ändemder slope, so that formed as a sleeve self-opener, on the outside thereof at least two guide ribs are arranged with a respective guide surface, the steady rotation in the interior of the nozzle by guiding its guide surfaces on the guide webs initially follows a steeply downward helix and afterwards in a pure D change in the horizontal.
  • the self-opener shutter is shown disassembled. It consists of three components, each made of injection-molded plastic, namely a rotary cap 1, from a spout 2 and from a spout Self-opening sleeve 3.
  • the rotary cap 1 is provided with knurling or grooves on the outside, so that this outside is more grip.
  • a guarantee strip 4 is molded onto the same, which is only connected via some fine material bridges 5 with the rotary cap 1, which are designed and designed as predetermined breaking points.
  • the spout-neck 2 is equipped on its outer side with an external thread, which fits to a corresponding internal thread on the rotary cap 1, but this is not visible here.
  • a spout nozzle 2 with external thread and an associated threaded cap with internal thread serve a spout nozzle with associated rotating cap
  • said the rotary cap can be placed on the spout nozzle by means of a bayonet catch.
  • the spout is externally provided with corresponding grooves and the rotating cap inside with associated cams or vice versa.
  • the laminate In order to pour liquid through this nozzle 2 from the pack or to be able to pour a bulk material, the laminate must in the region of the passage opening pushed away, perforated, cut away or torn away. It is desirable that the passage opening is exposed as completely as possible, that is, the laminate is cut out as clean as possible in this area, after which then the cut-out laminate disk can be swung away and then releases the passage as possible.
  • a self-opener in the form of a specially shaped sleeve 3.
  • At the lower edge is at least one stinging dome 10 formed with a sharp point 24, which seen from above on the sleeve 3 in the counterclockwise direction forms a sharp cutting edge 11.
  • each of these guide ribs 12 consists of two sections 13, 14, namely a section 13 extending horizontally on the sleeve 3 and a vertical section 14, which together form a right angle.
  • the outer tip of this right angle is chamfered at an angle of 45 ° to the sections 13,14 and forms with this chamfered surface a guide surface 15 which is intended to slide along a guiding cam formed by guide webs on the inner wall of the nozzle 2, as the is clear from further drawings.
  • the self-opener closure is also shown with its three components, namely the rotating cap 1, the spout nozzle 2 and the self-opener sleeve 3 in a disassembled state.
  • all components are shown in a longitudinal section along the central central axis of the closure.
  • the rotary cap 1 In the interior of the rotary cap 1 can be seen whose internal thread 16 attached at the bottom over some thin material bridges 5 as predetermined breaking points recognizes the guarantee strip 4.
  • two cylinder wall segments 17,18 are formed , wherein the radius of the corresponding cylinder is smaller than that of the cylindrical rotary cap wall.
  • the two circumferentially successive cylinder wall segments 17,18 are spaced from each other with a small lateral distance, so that in each case a gap 19 is formed between them.
  • the lower edge of the two cylinder wall segments 17,18 is formed extending obliquely downward and thus each forms a helical downward leading lower edge.
  • On the illustrated under the rotary cap 1 spout 2 can be seen distributed over the inner peripheral wall guide webs 20 which are intended to cooperate with the guide ribs 12 on the self-opening sleeve 3.
  • Each of these guide webs 20 consists of a horizontal portion 21 and a nozzle axis obliquely upward section 22.
  • the grooves of the external thread 6 and the bead 7, over which the rotary cap 1 for mounting with their guarantee strip 4 irreversible is invisible.
  • the bead 7 is chamfered on its upper side, the threaded band 4 can be put down with slight deformation over this bead 7.
  • the guarantee strip 4 can no longer be pushed back upwards over the bead 7 once it has tightly wrapped the peripheral wall of the neck 2 below this bead 7.
  • the guarantee strip 4 must first be removed, for which purpose it is torn away while breaking the material bridges 5. Thereafter, the rotary cap 1 is released for turning and upward movement.
  • the protruding radially from the lower edge of the nozzle 2 projection 9 is welded by means of ultrasonic welding on the paper laminate or cardboard laminate a liquid pack or bulk pack.
  • Below the nozzle 2, the self-opener sleeve 3 is shown. Its lower edge runs out at one point into a guide dome 10, which forms a sharp cutting edge 11 on the side directed counterclockwise as seen from above and runs down into a sharp point 24.
  • the upper edge of the self-opener sleeve 3 performs a web 23 traversing the clear width of the sleeve 3.
  • the ingredients composed of this self-opener closure the self-opener sleeve 3 comes to rest in the interior of the nozzle 2.
  • the sleeve 3 is inserted in such a rotational position in the nozzle 2 that their chamfered guide surfaces 15 come to rest on their guide ribs 12 on the undersides of the upper end of the inclined portions 22 of the guide webs 20 on the nozzle 2.
  • the rotary cap 1 in turn is placed in such a rotational position on these two components that the traversing web 23 in the gaps 19 between the two cylinder wall segments 17,18 lie on the lower cover side of the rotary cap 1 comes.
  • the rotary cap 1 is thereby pressed with its guarantee strip 4 with slight deformation of the same with force on the upper chamfer of the bead 7 and secures the rotary cap 1 with its subsequent rich concern on the outside of the Stutzenwandung against rotation, because it is from the guarantee strip 4 in her held lowest screwing position and can only be unscrewed when first the tamper-evident band 4 is torn away, because this is no longer able to slide up over the sharp lower edge 8 of the bead 7.
  • FIG. 3 shows this self-opening closure with its three components in the assembled state in a longitudinal section along the central center axis of the closure. It can be seen that the self-opening sleeve 3 is located between the cylinder wall Segement 17,18 and the nozzle 2 and that the traversing web 23 extends at the upper edge of the sleeve 3 in the gap 19 between the adjacent cylinder wall segments 17,18. On the outside of the sleeve 3 can be seen the horizontal portion 13 of one of its guide ribs 12.
  • a single taversierende bridge also such in the form of a star with three circumferentially distributed radially from the center of the sleeve 3 outwardly extending webs are realized, in which case three cylinder wall segments are used, between which the three webs to come to rest.
  • four radial webs, which together form a cross of two webs traversing the diameter of the sleeve are conceivable, in which case four cylinder wall segments are arranged distributed around the circumference. If, however, the sleeve 3 is rotated counterclockwise via its web 23, then the guide surfaces 15 of its guide ribs 12 which emerge from FIGS. 1 and 2 slide along the underside of the guide webs 20 on the connecting piece 2 downwards.
  • the left-hand rotation of the rotary cap 1 is therefore accompanied by a steep, helical downward movement of the self-opening sleeve 3. Due to the steep downward movement, the paper or cardboard laminate, which extends over the inside width of the neck 2, is initially substantially pierced by the sharp tip 24 of the piercing mandrel 10 at the lower edge of the sleeve 3. It is thus just a hole in the edge of the laminate disk engraved, that is, the laminate is pierced, not cut. Microscopically, the laminate material is displaced in a lancing on all sides and torn at the puncture site. The reaction forces of the piercing movement are taken up by the welding from the projecting edge 9 of the nozzle 2.
  • This first movement section of the self-opening sleeve proves to be crucial. Because, in conventional solutions, following a self-opener sleeve, the self-opening sleeve steadily turns downwards and their teeth impinge on the film at a shallow angle, so they are incapable of piercing the film. In the solution presented here, however, the sleeve follows in a first phase a very steep downward movement. The sharp tip 24 of its lance 10 therefore strikes the foil at a steep angle and punctures it at first practically locally.
  • the sleeve 3 has meanwhile reached its lowest position with respect to the nozzle 2, that is, the guide surface 15 at its guide ribs 12 is now located at the end of the oblique guide webs 22 on the inner wall of the nozzle or at the beginning of the horizontal portions 21 of the guide webs. If now rotated counterclockwise on the rotary cap 1, so also the sleeve 3 is rotated further counterclockwise, but it does not move down, but performs a rotation in the horizontal.
  • the projecting through the paper or cardboard foil lancing mandrel 10 acts in the episode with its sharp cutting edge 11 as a knife.
  • the cutting edge 11 thus cuts along the lower inner edge of the nozzle 2 a round disc from the paper or cardboard laminate.
  • the Schneidebwegung extends over a rotation of the sleeve by about 340 °.
  • the cut-out disc merely hangs on a thin material bridge and is pivoted and folded downwards into the pack by the pressing force of the cutting edge 11 acting in the cutting direction and held in this downwardly pivoted position.
  • This self-opening closure therefore works in principle like a classic can opener. Even when opening a sleeve, it is crucial that the lid is first pierced, by a substantially vertical movement of the tip of the cutting tool on and through the sleeve cover.
  • a recess 25 is present at its lower edge, which is bordered on both sides by ramps 26.
  • a horizontal portion 21 of one of its guide ribs 20 slides over the ramp 26 and engages in this recess 25 a.
  • the sleeve 3 can neither be further rotated nor turned back, so they So after being cut and swung down the laminate disk is held in this position. The almost completely cut out laminate disk is thus kept reliably pivoted down into the liquid pack.
  • the rotary cap 1 is screwed on the neck 2 so far up that the downwardly projecting cylinder wall segments 17,18 on the bottom of the Drehkappendeckels be lifted over the web 23 on the sleeve 3 and therefore no more torque can transmit to the same.
  • the rotary cap 1 is completely unscrewed from the neck 2 and the liquid can now be dispensed or poured out of the liquid pack via the neck 2 exposed on the inside, or in the case of a bulk material in the pack, this can be dispensed through the neck 2.
  • Hemach is screwed the rotary cap 1 again on the neck 2, to close the closure again.
  • the helical downwardly extending lower edges of the cylinder segment walls 17,18 that no torque is transmitted clockwise to the web 23 by these helical lower edges just over the top of the traversing web 23rd glide, but can not take it anymore.
  • FIG. 4 shows the self-opener closure in the assembled state in a perspective view obliquely from below.
  • the self-opening sleeve 3 is in its initial state.
  • a piece of the traversing web 23 which connects their upper edge in two places.
  • This web 23 is located between the two cylinder wall segments 17,18, which are integrally formed on the underside of the lid of the rotary cap 1.
  • the rotary cap 1 If the rotary cap 1 is rotated in the release direction, that is to say in the view shown here from below in a clockwise direction, then the cylinder wall segments 17, 18 take up the intermediate web 23 and thus the sleeve 3, as a result of which special guide ribs 12 on its outer side and the guide webs 20 on the inside of the nozzle 2 forcibly moved in a steep spiral down.
  • the sharp tip 24 of the piercing pin 10 acts as a piercing tip and pierces first the welded on the underside of the projecting edge 9 of the nozzle 2 paper or cardboard laminate of the composite package.
  • FIG. 5 shows the self-opening closure with the self-opening sleeve in the extended or fully lowered state.
  • the end of one of the horizontal sections 13 of its guide ribs 12 engages in the recess 25 on the inner wall of the neck 2 and prevents the sleeve 3 from being further rotated or even slid into it Opposite direction can be turned.
  • the sleeve 3 has pivoted in this position, almost completely cut out of the laminate disc down into the container and keeps it secured in this position. The flow through the nozzle 2 is thus released.
  • FIG. 6 shows the pouring spout 2 and the sleeve 3 of the self-opening closure in the assembled state in a perspective view obliquely from below, but with the self-opening sleeve 3 completely detached from the spout 2 so that the special arrangement of its guide ribs 12 is better visible and their function can therefore be better understood.
  • FIG. 7 shows an alternative embodiment of this self-opening closure for mounting on the membrane-sealed neck of a container or a bottle.
  • the spout-neck 2 therefore has on its underside no projecting edge, but is transferred via a shoulder 27 in a threaded sleeve 28 which can be screwed onto the external thread of a bottle neck or on the spout nozzle of any container at its upper Edge is closed with a foil and sealed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Making Paper Articles (AREA)

Description

Diese Erfindung betrifft einen Selbstöffner-Verschluss für Verbundpackungen sowie für mit Folienmaterial verschlossene Behälterstutzen oder Flaschenhälse aller Art. Dabei ist namentlich an Flüssigkeitspackungen in Form solcher Verbundpackungen aus folienbeschichtetem Papier gedacht, in denen etwa Milch, Fruchtsäfte, allerlei nichtalkoholische Getränke oder generell Flüssigkeiten auch aus dem Non-Food-Bereich verpackt werden. Der Verschluss kann aber auch für Verbundpackungen eingesetzt werden, in denen schüttfähige Güter wie etwa Zucker, Gries oder allerlei Chemikalien und ähnliches aufbewahrt bzw. verpackt werden. Bei diesem folienbeschichteten Papier handelt es sich um einen Laminatstoff, etwa um eine mit Kunststoff wie zum Beispiel Polyäthylen und/oder Aluminium beschichtete Papier- oder Kartonbahn. Gebräuchliche Volumina solcher Packungen reichen von 20cl bis zu 2 Litern und mehr. Alternativ kann der Selbstöffner-Verschluss auch an Behältern montiert werden, die von einem Folienmaterial verschlossen sind, etwa an allerlei Flaschen aus Glas oder Kunststoff oder an ähnlichen Behältern. Derartige Verschlüsse aus Kunststoff sind in verschiedenen Ausführungen bekannt. Sie bilden, wenn sie für eine Verbundpackung bestimmt sind, im wesentlichen einen Ausguss-Stutzen mit von seinem unteren Rand radial auskragendem Rand, der an diesem Ausguss-Stutzen einen abschliessenden Flansch bildet. Der Stutzen ist mit einem Aussengewinde ausgerüstet, auf welches eine Drehkappe als Verschluss aufgeschraubt werden kann. Ein solcher Selbstöffner-Verschluss wird auf die Verbundpackung aufgeflanscht, indem er mit der Unterseite seines auskragenden Randes, also mit der Unterseite seines Flansches auf die Verbundpackung dichtend aufgeschweisst wird. Der freie Durchgang am unteren Ende des Stutzens ist danach jedoch vom Papier und der Dichtfolie der Verbundpackung verschlossen. Im Falle eines Flaschenverschlusses ist der Ausguss-Stutzen seinerseits auf eine Flaschenmündung aufsteck- oder aufschraubbar und auf seiner Innenseite mit einer Folienmembran verschlossen. Der Stutzen ist mit einem Aussengewinde ausgerüstet, auf welches dann die Drehkappe als Verschluss aufgeschraubt werden kann. Das unterhalb des aufgeschweissten Stutzens durchgehende folienverstärkte Papier oder die innerhalb des Stutzens verlaufende Folienmembran muss zum Öffnen aufgeschnitten, aufgerissen oder weggedrückt werden, damit der Durchgang freigegeben wird und die Flüssigkeit oder das Schüttgut aus dem Behälter durch den Stutzen ausgegossen bzw. ausgeschüttet werden kann. Hierzu ist im Innem des Stutzens eine Hülse oder ein Nippel angeordnet, welcher beim Drehen der aufgeschraubten Kappe von dieser mitgenommen wird und deshalb durch diese in gleicher Umdrehungsrichtung gedreht wird. Durch ein zum Gewinde an der Aussenseite des Stutzens und der Innenseite der Kappe gegenläufiges Gewinde an der Innenseite des Stutzens und an der Aussenseite der Hülse bewegt sich diese beim Wegschrauben der Drehkappe, das heisst wenn diese sich gegenüber der Flüssigkeitspackung nach oben verschiebt, stetig nach unten. Der untere Rand der Hülse ist mit einem oder mehreren Reiss- oder Schneidzähnen ausgestattet. Dadurch soll die Hülse infolge ihrer Drehung und stetigen Abwärtsbewegung eine Scheibe aus dem unter ihr durchlaufenden folienverstärkten Papier oder der Folienmembran herausdrücken oder herausschneiden.This invention relates to a self-opener closure for composite packages as well as closed with foil material container necks or necks of all kinds. It is especially thought of liquid packages in the form of such composite packages of foil-coated paper in which about milk, fruit juices, all kinds of non-alcoholic drinks or liquids in general from the Non-food area to be packed. The closure can also be used for composite packages in which bulk goods such as sugar, semolina or all kinds of chemicals and the like are stored or packaged. This film-coated paper is a laminate material, such as a paper or board web coated with plastic such as polyethylene and / or aluminum. Common volumes of such packages range from 20cl up to 2 liters and more. Alternatively, the self-opening closure can also be mounted on containers that are closed by a foil material, for example on all kinds of bottles made of glass or plastic or on similar containers. Such closures made of plastic are known in various designs. When formed into a composite package, they essentially form a spout neck radially from its lower edge projecting edge, which forms a final flange on this spout. The nozzle is equipped with an external thread on which a rotating cap can be screwed as a closure. Such a self-opener closure is flanged onto the composite package by sealingly sealing it to the composite package with the underside of its cantilevered edge, that is, the underside of its flange. However, the free passage at the bottom of the nozzle is then closed by the paper and the sealing film of the composite package. In the case of a bottle closure, the spout is in turn plugged or screwed onto a bottle mouth and closed on its inside with a foil membrane. The nozzle is equipped with an external thread on which then the rotary cap can be screwed as a closure. The film-reinforced paper passing through below the welded-on nozzle or the film membrane running inside the nozzle must be cut open, torn open or pushed away to open the passage and allow the liquid or bulk material to be poured out of the container through the nozzle. For this purpose, a sleeve or nipple is arranged in the interior of the nozzle, which is taken along when turning the screw cap of this and is therefore rotated by this in the same direction of rotation. By an opposite to the thread on the outside of the nozzle and the inside of the cap thread on the inside of the nozzle and on the outside of the sleeve this moves when unscrewing the rotary cap, that is, when this moves against the liquid pack upwards, steadily down , The lower edge of the sleeve is equipped with one or more rip or cutting teeth. As a result, the sleeve is due to their rotation and steady downward movement to push out or cut out a disc from the film-reinforced paper or foil membrane passing under it.

Herkömmliche solche Selbstöffner-Verschlüsse (siehe z.B. EP-A-1 088 764) funktionieren jedoch nicht zur vollen Zufriedenheit. Es werden keine Scheiben sauber aus der Papierfolie oder der Folienmembran herausgeschnitten, sondern vielmehr drücken diese Hülsen einfach ein Stück Folie aus dieser heraus. Der verbleibende Rand ist ausgefranzt und somit ragen Papierfetzen oder Folienfetzen in den Durchgang, welcher eigentlich freigelegt werden sollte. Diese Fetzen ragen oft auch nach unten in den Behälter und versperren beim Ausgiessen oder Ausschütten womöglich den Weg für die von aussen in den Behälter einzuströmende Luft, oder sie ragen gar in den Weg des ausströmenden Flüssigkeitsstrahls oder der ausgeschütteten Güter. Bei grösseren Packungen mit stärkerem folienverstärkten Papier oder Karton wird die Öffnung noch weniger zuverlässig und sauber vollzogen. Die sich langsam nach unten bewegende und gleichzeitig drehende Hülse berührt mit ihrem ganzen unteren Rand quasi gleichzeitig die aufzuschneidende folienverstärkte Papierfolie und drückt sie insgesamt nach unten und dreht sich auf ihr, bis ein Loch mehr durchgeschabt oder durchgebrochen denn aufgeschnitten wird. Ein Problem liegt darin, dass die aufzuschneidende Folie dem Druck der gewissermassen als Bohrkrone wirkenden Hülse etwas nach unten ausweicht und somit die Hülse nicht mehr auf eine ebene Papierfolie wirkt, sondern auf eine nach unten gekrümmte. Weiter erfordern die bisherigen Lösungen infolge der Gestaltung der Hülsen, die sinnigerweise auch als Durchstosser bezeichnet werden, weil sie eben mehr eine Papierfolien-Stück durchstossen als eine kreisrunde Scheibe sauber auszuschneiden, eine gehörige Kraft von Seiten des Benützers. Es muss nämlich ein grosses Drehmoment aufgebracht werden, weil die Zähne oder Aufreisser am unteren Durchstosser-Rand bzw. Hülsenrand die Folie zunächst bloss ankratzen und hernach einen grossen Drehwiderstand überwinden müssen. Sie wirken in der obersten Schicht der Papierdicke ähnlich wie Aufreisszähne, nämlich schabend, drückend und reissend anstatt als wirkliche Schneidklingen zu wirken. Um das Herausbrechen oder Herausreissen zu erleichtern, wird für die herkömmlichen Selbstöffner-Verschlüsse dieser Art das Folienmaterial oder der Verbundstoff mittels Lasern oder Stanzwerkzeugen an den gewünschten Reiss-Stellen vorgeschwächt. Dieses Vorschwächen ist jedoch technisch mit erheblichem Aufwand verbunden. Man benötigt teure Einrichtungen und das Handling für die Bearbeitung der Durchstoss-Stellen an den Folien ist zeitraubend. Trotzdem dieser aufwändigen Schwächungsmassnahmen schneiden die herkömmlichen Selbstöffner-Verschlüsse nicht sauber, sondern reissen die Papier- oder Kunststofffolie eher auf als dass sie dieselbe sauber aufschneiden, was die grossen Drehwiderstände erklärt. Wegen der grossen Drehwiderstände treten ab und zu sogar Brüche der Mittel auf, welche die Übertragung des Drehmomentes von der Drehkappe auf die Durchstosserhülse übernehmen sollen, oder die vorgesehenen Mitnehmemocken, welche in Nuten an der Durchstosserhülse eingreifen, springen aus diesen Nuten. Wenn solches passiert, ist der Selbstöffner-Verschluss nicht mehr funktionsfähig.However, conventional such self-opener closures (see eg EP-A-1 088 764) do not work to full satisfaction. No slices are cut out cleanly from the paper or foil membrane, but rather, these tubes simply push a piece of foil out of it. The remaining border is fringed and thus scraps of paper or scraps of paper protrude into the passage, which should actually be uncovered. These shreds also often protrude down into the container and may obstruct the way for the air to be fed from the outside into the container during pouring or pouring out, or even protrude into the path of the outflowing liquid jet or the discharged goods. For larger packages with stronger foil-reinforced paper or cardboard, the opening is made even less reliable and clean. The slowly downwardly moving and simultaneously rotating sleeve touches with its entire lower edge almost simultaneously the foil-reinforced paper foil to be cut and presses it all down and turns on it until a hole is more scraped or broken through rather than cut. One problem is that the foil to be sliced avoids something downwards to the pressure of the sleeve, which acts as a drill bit to some extent, and thus the sleeve no longer acts on a flat paper foil, but on a downwardly curved one. Next require the previous solutions due to the design of the sleeves, which are also referred to as Durchstecksser reasonably, because they pierce just more a piece of paper foil than a circular disc clean cut, a considerable force on the part of the user. It must namely be applied a large torque, because the teeth or tears on the lower piercing edge or sleeve edge, the film initially only scratch and then have to overcome a large rotational resistance. They act in the uppermost layer of paper thickness much like rip-off teeth, namely chafe, oppressive and tearing instead of acting as real cutting blades. In order to facilitate breaking or tearing, for conventional self-opener closures of this type, the sheet material or composite is pre-weighted at the desired tear locations by means of lasers or punching tools. However, this Vorschwächen is technically associated with considerable effort. You need expensive equipment and handling the processing of the piercing points on the slides is time consuming. Despite these elaborate mitigation measures, the conventional self-opener closures do not cut cleanly, but tear the paper or plastic film up rather than cutting it clean, which explains the high rotational resistance. Because of the large rotary resistances, even breaks occur from time to time Means on which should take over the transmission of torque from the rotary cap on the Durchstosserhülse, or provided Mitnehmemocken which engage in grooves on the Durchstosserhülse, jump out of these grooves. If this happens, the self-opener shutter will no longer work.

Es gilt daher, diesen Problemen Abhilfe zu leisten und einen Selbstöffner-Verschluss für Verbundpackungen oder für mit Folienmaterial verschlossene Behälterstutzen zu schaffen, der für verschiedene Dimensionen ein zuverlässiges Ausschneiden der Laminatscheibe oder Folienscheibe im lichten Stutzendurchgang ermöglicht, wobei saubere Schnittränder erzielt werden sollen, sodass in den Durchgang ragende Fetzen vermieden werden. Für eine Vielzahl von Folienmaterialien und Verbundstoffen soll ein gezieltes Vorschwächen der Schneidstellen durch Stanzen oder Laser-Behandlung sogar entfallen können.It is therefore necessary to remedy these problems and to provide a self-opener closure for composite packages or closed with foil material container neck, which allows for different dimensions reliable cutting of the laminate disc or foil disc in the light nozzle passage, with clean cut edges are to be achieved, so in the passage protruding shreds are avoided. For a variety of film materials and composites a targeted pre-weakening of the cutting points by punching or laser treatment should even be eliminated.

Diese Aufgabe wird gelöst von einem Selbstöffner-Verschluss für Verbundpackungen sowie für mit Folienmaterial verschlossene Behälterstutzen, bestehend aus einem Stutzen, welcher dichtend auf eine Verbundpackung oder auf einen mit Folienmaterial verschlossenen Behälter montierbar ist, einer zugehörigen Drehkappe sowie einem innerhalb des Stutzens angeordneten Selbstöffner, welcher von der Drehkappe in Drehung versetzbar ist, wobei sich der Selbstöffner-Verschluss dadurch auszeichnet, dass die Innenseite des Stutzens mit mindestens zwei um seinen Innenumfang verteilt angeordneten Führungsstegen mit ändemder Steigung ausgerüstet ist, sodass der als Hülse ausgebildete Selbstöffner, an dessen Aussenseite mindestens zwei Führungsrippen mit je einer Führungsfläche angeordnet sind, beim stetigen Drehen im Innern des Stutzens durch Führung seiner Führungsflächen an den Führungsstegen zunächst einer steil abwärts gerichteten Schraubenlinie folgt und hernach in eine reine Drehung in der Horizontalen übergeht.This object is achieved by a self-opener closure for composite packages as well as sealed with film material container neck, consisting of a nozzle which is sealingly mounted on a composite package or on a closed container with film material, an associated rotary cap and a disposed within the nozzle self-opener, which from the rotary cap is set into rotation, wherein the self-opener closure is characterized in that the inside of the nozzle is equipped with at least two distributed around its inner circumference arranged guide webs with ändemder slope, so that formed as a sleeve self-opener, on the outside thereof at least two guide ribs are arranged with a respective guide surface, the steady rotation in the interior of the nozzle by guiding its guide surfaces on the guide webs initially follows a steeply downward helix and afterwards in a pure D change in the horizontal.

In den Figuren ist eine vorteilhafte Ausführung dieses Selbstöffner-Verschlusses für Verbundpackungen in verschiedenen Ansichten dargestellt. Anhand dieser Figuren wird der Selbstöffner-Verschluss nachfolgend im einzelnen beschrieben und seine Funktion wird erläutert und erklärt.
Es zeigt:

Figur 1:
Den Selbstöffner-Verschluss mit seinen drei Bestandteilen in auseinandergenommenem Zustand von der Seite her gesehen;
Figur 2:
Den Selbstöffner-Verschluss mit seinen drei Bestandteilen in auseinandergenommenem Zustand von der Seite her gesehen, wobei alle Bestandteile in einem Längsschnitt längs der zentralen Mittelachse des Verschluss dargestellt sind;
Figur 3:
Den Selbstöffner-Verschluss mit seinen drei Bestandteilen in zusammengebautem Zustand in einem Längsschnitt längs der zentralen Mittelachse des Verschluss;
Figur 4:
Den Selbstöffner-Verschluss in zusammengebautem Zustand in perspektivischer Ansicht von schräg unten gesehen, mit der Selbstöffner-Hülse in ihrem Ausgangszustand;
Figur 5:
Den Selbstöffner-Verschluss in zusammengebautem Zustand in perspektivischer Ansicht von schräg unten gesehen, mit der Selbstöffner-Hülse in ausgefahrenem bzw. niedergefahrenem Zustand, bereit für die Schneidebewegung;
Figur 6:
Den Selbstöffner-Verschluss in zusammengebautem Zustand in perspektivischer Ansicht von schräg unten gesehen, mit der Selbstöffner-Hülse vollständig vom Stutzen herausgelöst dargestellt;
Figur 7:
Den Selbstöffner-Verschluss in einer Ausführung zum Montieren auf einem mit einer Folie verschlossenen Behälter.
In the figures, an advantageous embodiment of this self-opener closure for composite packages is shown in different views. With reference to these figures, the self-opener shutter will be described in detail below and its function will be explained and explained.
It shows:
FIG. 1:
The self-opener closure with its three components in a disassembled state seen from the side;
FIG. 2:
The self-opening closure with its three components in a disassembled state seen from the side, wherein all components are shown in a longitudinal section along the central center axis of the closure;
FIG. 3:
The self-opening closure with its three components in assembled condition in a longitudinal section along the central center axis of the closure;
FIG. 4:
The self-opener closure in assembled condition in a perspective view seen obliquely from below, with the self-opener sleeve in its initial state;
FIG. 5:
The self-opener closure seen in assembled condition in a perspective view obliquely from below, with the self-opener sleeve in the extended or niedergefahrenem state, ready for the cutting movement;
FIG. 6:
The self-opener closure in assembled condition seen in perspective view obliquely from below, with the self-opener sleeve completely detached from the nozzle shown;
FIG. 7:
The self-opener closure in a design for mounting on a sealed container with a film.

In Figur 1 ist der Selbstöffner-Verschluss in demontiertem Zustand gezeigt. Er besteht aus drei Bestandteilen, die je aus Spritzkunststoff hergestellt sind, nämlich aus einer Drehkappe 1, aus einem Ausguss-Stutzen 2 und aus einer Selbstöffner-Hülse 3. Die Drehkappe 1 ist aussen mit einer Rändelung oder mit Rillen versehen, damit diese Aussenseite griffiger ist. Am unteren Rand der Drehkappe 1 ist ein Garantieband 4 an denselben angespritzt, welches nur über einige feine Materialbrücken 5 mit der Drehkappe 1 verbunden ist, die als Sollbruchstellen konzipiert und ausgelegt sind. Der Ausguss-Stutzen 2 ist auf seiner Aussenseite mit einem Aussengewinde ausgerüstet, welches zu einem entsprechenden Innengewinde an der Drehkappe 1 passt, wobei dieses hier allerdings nicht sichtbar ist. Unterhalb des Aussengewindes 6 trägt der Stutzen 2 einen kleinen, oben abgeschrägten Wulst 7 mit auf seiner Unterseite kantigem Rand 8. Als Alternative kann anstelle eines Ausguss-Stutzens 2 mit Aussengewinde und einer zugehörigen Gewindekappe mit Innengewinde ein Ausguss-Stutzen mit zugehöriger Drehkappe dienen, wobei die Drehkappe mittels eines Bajonettverschlusses auf den Ausguss-Stutzen aufsetzbar ist. Hierzu ist der Ausguss-Stutzen aussen mit entsprechenden Nuten und die Drehkappe innen mit zugehörigen Nocken versehen oder umgekehrt. Die zunächst in der Horizontalebene auszuführende Drehung der Drehkappe im Gegenuhrzeigersinn betätigt dann beim ersten Öffnen die Selbstöffner-Hülse genau wie sonst die Gewindekappe, wie das noch näher beschrieben wird. Am unteren Rand des Stutzens 2 ist eine radial abstehende, ringförmige und ebene Auskragung 9 angeformt. Mit der Unterseite dieser ebenen Auskragung 9 wird der Stutzen 2 auf eine Verbundpackung aus einem Laminat aus einer folienverstärkten Papier- oder Kartonbahn mittels einer Ultraschallschweissung dichtend aufgeschweisst. Dieses Laminat verläuft deshalb durchgehend unter dem Ausguss-Stutzen 2 hindurch und verschliesst auf dessen Unterseite die lichte Durchgangsöffnung des Stutzens 2. Um Flüssigkeit durch diesen Stutzen 2 aus der Packung ausgiessen zu können oder ein Schüttgut ausschütten zu können, muss das Laminat im Bereich der Durchgangsöffnung weggedrückt, perforiert, weggeschnitten oder weggerissen werden. Wünschenswert ist, dass die Durchgangsöffnung möglichst vollständig freigelegt wird, das heisst das Laminat in diesem Bereich möglichst sauber herausgeschnitten wird, wonach dann die herausgeschnittene Laminatscheibe weggeschwenkt werden kann und danach den Durchgang möglichst freigibt. Für dieses Freilegen der Durchgangsöffnung dient ein Selbstöffner in Form einer speziell geformten Hülse 3. An deren unterem Rand ist mindestens ein Stechdom 10 mit scharfer Spitze 24 angeformt, welcher von oben auf die Hülse 3 gesehen in der Gegenuhrzeigersinn-Richtung eine scharfe Schneidkante 11 bildet. Am äusseren Umfang der Selbstöffner-Hülse 3 sind mindestens zwei über den Umfang verteilt angeordnete Führungsrippen 12 angeformt, vorzugsweise jedoch, wie im gezeigten Beispiel, deren vier. Jede dieser Führungsrippen 12 besteht aus zwei Abschnitten 13,14, nämlich einem an der Hülse 3 horizontal verlaufenden Abschnitt 13 und einem vertikalen Abschnitt 14, welche zusammen einen rechten Winkel bilden. Die äussere Spitze dieses rechten Winkels ist in einem Winkel von 45° zu den Abschnitten 13,14 angefast und bildet mit dieser angefasten Fläche eine Führungsfläche 15, die längs einer von Führungsstegen gebildeten Führungskurve an der Innenwand des Stutzens 2 zu gleiten bestimmt ist, wie das anhand weiterer Zeichnungen noch klar wird.In Fig. 1, the self-opener shutter is shown disassembled. It consists of three components, each made of injection-molded plastic, namely a rotary cap 1, from a spout 2 and from a spout Self-opening sleeve 3. The rotary cap 1 is provided with knurling or grooves on the outside, so that this outside is more grip. At the bottom of the rotary cap 1 a guarantee strip 4 is molded onto the same, which is only connected via some fine material bridges 5 with the rotary cap 1, which are designed and designed as predetermined breaking points. The spout-neck 2 is equipped on its outer side with an external thread, which fits to a corresponding internal thread on the rotary cap 1, but this is not visible here. Below the external thread 6 of the nozzle 2 carries a small, beveled top bead 7 with edged on its underside edge 8. Alternatively, instead of a spout nozzle 2 with external thread and an associated threaded cap with internal thread serve a spout nozzle with associated rotating cap, said the rotary cap can be placed on the spout nozzle by means of a bayonet catch. For this purpose, the spout is externally provided with corresponding grooves and the rotating cap inside with associated cams or vice versa. The rotation of the rotary cap in the counterclockwise direction, which is first to be carried out in the horizontal plane, then actuates the self-opening sleeve just like the threaded cap during the first opening, as will be described in more detail below. At the bottom of the nozzle 2, a radially projecting, annular and planar projection 9 is formed. With the underside of this flat projection 9, the nozzle 2 is sealingly welded to a composite package of a laminate of a film-reinforced paper or board web by means of ultrasonic welding. This laminate therefore runs continuously under the spout 2 through and closes on the underside of the clear passage opening of the nozzle 2. In order to pour liquid through this nozzle 2 from the pack or to be able to pour a bulk material, the laminate must in the region of the passage opening pushed away, perforated, cut away or torn away. It is desirable that the passage opening is exposed as completely as possible, that is, the laminate is cut out as clean as possible in this area, after which then the cut-out laminate disk can be swung away and then releases the passage as possible. For this exposure of the passage opening is a self-opener in the form of a specially shaped sleeve 3. At the lower edge is at least one stinging dome 10 formed with a sharp point 24, which seen from above on the sleeve 3 in the counterclockwise direction forms a sharp cutting edge 11. At the outer periphery of the self-opener sleeve 3 at least two distributed over the circumference arranged guide ribs 12 are formed, but preferably, as in the example shown, the four. Each of these guide ribs 12 consists of two sections 13, 14, namely a section 13 extending horizontally on the sleeve 3 and a vertical section 14, which together form a right angle. The outer tip of this right angle is chamfered at an angle of 45 ° to the sections 13,14 and forms with this chamfered surface a guide surface 15 which is intended to slide along a guiding cam formed by guide webs on the inner wall of the nozzle 2, as the is clear from further drawings.

In Figur 2 ist der Selbstöffner-Verschluss ebenfalls mit seinen drei Bestandteilen, nämlich der Drehkappe 1, dem Ausguss-Stutzen 2 und der Selbstöffner-Hülse 3 in auseinandergenommenem Zustand dargestellt. Hier sind jedoch alle Bestandteile in einem Längsschnitt längs der zentralen Mittelachse des Verschlusses gezeigt. Im Innern der Drehkappe 1 erkennt man deren Innengewinde 16. Am unteren Rand über einige dünne Materialbrücken 5 als Sollbruchstellen befestigt erkennt man das Garantieband 4. Als Besonderheit sind im Innern dieser Drehkappe 1 an der Unterseite des Kappendeckels im gezeigten Beispiel zwei Zylinderwandsegmente 17,18 angeformt, wobei der Radius des entsprechenden Zylinders kleiner ist als jener der zylinderförmigen Drehkappenwand. Die beiden in Umfangsrichtung einander folgenden Zylinderwandsegmente 17,18 sind voneinander mit einem geringen seitlichen Abstand beabstandet, sodass also zwischen ihnen jeweils ein Spalt 19 gebildet ist. Der untere Rand der beiden Zylinderwandsegmente 17,18 ist schräg nach unten verlaufend ausgeformt und bildet somit je einen schraubenlinienförmig nach unten führenden unteren Rand. Am unter der Drehkappe 1 abgebildeten Ausguss-Stutzen 2 erkennt man über dessen innere Umfangswand verteilt angeordnete Führungsstege 20, welche mit den Führungsrippen 12 an der Selbstöffner-Hülse 3 zusammenzuwirken bestimmt sind. Im gezeigten Beispiel handelt es sich um vier solche Führungsstege 20, von denen einer vollständig einsehbar ist, jener links und rechts im Bild zur Hälfte und einer, nämlich derjenige, der infolge der Schnittdarstellung zum zeichnerisch weggeschnittenen Teil des Stutzens 2 gehört, gar nicht sichtbar ist. Jeder dieser Führungsstege 20 besteht aus einem horizontalen Abschnitt 21 und einem zur Stutzenachse schräg aufwärts angeordneten Abschnitt 22. An der Aussenseite des Stutzens 2 erkennt man die Rillen des Aussengewindes 6 sowie den Wulst 7, über den die Drehkappe 1 zur Montage mit ihrem Garantieband 4 irreversibel stülpbar ist. Weil der Wulst 7 auf seiner Oberseite angeschrägt ist, lässt sich das Gewindeband 4 unter leichter Verformung über diesen Wulst 7 nach unten stülpen. Wegen der scharfen Kante 8 auf der Unterseite des Wulstes 7 lässt sich das Garantieband 4 hingegen nicht mehr nach oben über den Wulst 7 zurückstülpen, wenn es einmal unterhalb dieses Wulstes 7 die Umfangswand des Stutzens 2 eng umschlungen hat. Zum Öffnen der Drehkappe 1 muss deshalb zunächst das Garantieband 4 entfernt werden, wozu es unter Bruch der Materialbrücken 5 weggerissen wird. Hernach ist die Drehkappe 1 zum Drehen und zum Aufwärtsbewegen freigegeben. Die radial vom unteren Rand des Stutzens 2 abstehende Auskragung 9 wird mittels einer Ultraschall-Schweissung auf das Papierlaminat oder Kartonlaminat einer Flüssigkeitspackung oder Schüttgutpackung aufgeschweisst. Unterhalb des Stutzens 2 ist die Selbstöffner-Hülse 3 gezeigt. Ihr unterer Rand läuft an einer Stelle in einen Führungsdom 10 aus, welcher auf der von oben gesehen in Gegenuhrzeigerrichtung gerichteten Seite eine scharfe Schnittkante 11 bildet und unten in eine scharfe Spitze 24 ausläuft. Man erkennt rechts im Bild den horizontal verlaufenden Abschnitt 13 einer einzelnen Führungsrippe 12 an der Aussenwand der Hülse 3. Auf der Innenseite zunächst dem oberen Rand der Selbstöffner-Hülse 3 führt ein Steg 23 traversierend über die lichte Weite der Hülse 3. Werden nun die Bestandteile dieses Selbstöffner-Verschlusses zusammengesetzt, so kommt die Selbstöffner-Hülse 3 in das Innere des Stutzens 2 zu liegen. Dabei wird die Hülse 3 in einer solchen Drehlage in den Stutzen 2 eingeschoben, dass ihre angefasten Führungsflächen 15 an ihren Führungsrippen 12 an den Unterseiten der oberen Ende der schrägen Abschnitte 22 der Führungsstege 20 am Stutzen 2 zu liegen kommen. Die Drehkappe 1 ihrerseits wird in einer solchen Drehlage auf diese beiden Bestandteile aufgesetzt, dass der traversierende Steg 23 in die Spalten 19 zwischen den beiden Zylinderwandsegmenten 17,18 an der unteren Deckelseite der Drehkappe 1 zu liegen kommt. Die Drehkappe 1 wird dabei mit ihrem Garantieband 4 unter leichter Deformation desselben mit Kraft über die obere Abschrägung des Wulstes 7 gedrückt und sichert die Drehkappe 1 mit ihrem anschliessenden satten Anliegen an der Aussenseite der Stutzenwandung vor einer Verdrehung, denn sie wird vom Garantieband 4 in ihrer untersten Schraubposition gehalten und kann nur losgeschraubt werden, wenn zunächst das Garantieband 4 weggerissen wird, denn dieses vermag nicht mehr nach oben über die scharfe untere Randkante 8 des Wulstes 7 zu gleiten.In Figure 2, the self-opener closure is also shown with its three components, namely the rotating cap 1, the spout nozzle 2 and the self-opener sleeve 3 in a disassembled state. Here, however, all components are shown in a longitudinal section along the central central axis of the closure. In the interior of the rotary cap 1 can be seen whose internal thread 16 attached at the bottom over some thin material bridges 5 as predetermined breaking points recognizes the guarantee strip 4. As a special feature inside the rotary cap 1 on the underside of the cap lid in the example shown two cylinder wall segments 17,18 are formed , wherein the radius of the corresponding cylinder is smaller than that of the cylindrical rotary cap wall. The two circumferentially successive cylinder wall segments 17,18 are spaced from each other with a small lateral distance, so that in each case a gap 19 is formed between them. The lower edge of the two cylinder wall segments 17,18 is formed extending obliquely downward and thus each forms a helical downward leading lower edge. On the illustrated under the rotary cap 1 spout 2 can be seen distributed over the inner peripheral wall guide webs 20 which are intended to cooperate with the guide ribs 12 on the self-opening sleeve 3. In the example shown, there are four such guide webs 20, one of which is completely visible, those left and right in the image in half and one, namely the one who belongs due to the sectional view to the drawing cut away part of the nozzle 2, is not visible. Each of these guide webs 20 consists of a horizontal portion 21 and a nozzle axis obliquely upward section 22. On the outside of the nozzle 2 can be seen the grooves of the external thread 6 and the bead 7, over which the rotary cap 1 for mounting with their guarantee strip 4 irreversible is invisible. Because the bead 7 is chamfered on its upper side, the threaded band 4 can be put down with slight deformation over this bead 7. On the other hand, because of the sharp edge 8 on the underside of the bead 7, the guarantee strip 4 can no longer be pushed back upwards over the bead 7 once it has tightly wrapped the peripheral wall of the neck 2 below this bead 7. For opening the rotary cap 1, therefore, the guarantee strip 4 must first be removed, for which purpose it is torn away while breaking the material bridges 5. Thereafter, the rotary cap 1 is released for turning and upward movement. The protruding radially from the lower edge of the nozzle 2 projection 9 is welded by means of ultrasonic welding on the paper laminate or cardboard laminate a liquid pack or bulk pack. Below the nozzle 2, the self-opener sleeve 3 is shown. Its lower edge runs out at one point into a guide dome 10, which forms a sharp cutting edge 11 on the side directed counterclockwise as seen from above and runs down into a sharp point 24. It can be seen on the right in the image, the horizontally extending portion 13 of a single guide rib 12 on the outer wall of the sleeve 3. On the inside first the upper edge of the self-opener sleeve 3 performs a web 23 traversing the clear width of the sleeve 3. Now the ingredients composed of this self-opener closure, the self-opener sleeve 3 comes to rest in the interior of the nozzle 2. In this case, the sleeve 3 is inserted in such a rotational position in the nozzle 2 that their chamfered guide surfaces 15 come to rest on their guide ribs 12 on the undersides of the upper end of the inclined portions 22 of the guide webs 20 on the nozzle 2. The rotary cap 1 in turn is placed in such a rotational position on these two components that the traversing web 23 in the gaps 19 between the two cylinder wall segments 17,18 lie on the lower cover side of the rotary cap 1 comes. The rotary cap 1 is thereby pressed with its guarantee strip 4 with slight deformation of the same with force on the upper chamfer of the bead 7 and secures the rotary cap 1 with its subsequent rich concern on the outside of the Stutzenwandung against rotation, because it is from the guarantee strip 4 in her held lowest screwing position and can only be unscrewed when first the tamper-evident band 4 is torn away, because this is no longer able to slide up over the sharp lower edge 8 of the bead 7.

Die Figur 3 zeigt diesen Selbstöffner-Verschluss mit seinen drei Bestandteilen in zusammengebautem Zustand in einem Längsschnitt längs der zentralen Mittelachse des Verschlusses. Man erkennt, dass die Selbstöffner-Hülse 3 zwischen den Zylinderwand-Segementen 17,18 und dem Stutzen 2 liegt und dass der traversierende Steg 23 am oberen Rand der Hülse 3 im Spalt 19 zwischen den benachbarten Zylinderwandsegmenten 17,18 verläuft. An der Aussenseite der Hülse 3 erkennt man den horizontalen Abschnitt 13 einer ihrer Führungsrippen 12. Auf der Innenseite des Stutzens 2 sieht man die horizontalen Abschnitte 21 der Führungsstege 20, und an der Aussenseite des Stutzens 2 die Rillen des Aussengewindes 6 und etwas weiter unten den Wulst 7 zum Überstülpen des Garantiebandes 4, sowie am unteren Rand des Stutzens 2 die radiale Auskragung 9. Auf der Innenseite der Drehkappe 1 ist deren Innengewinde 16 zu erkennen und am unteren Rand der Drehkappe 1 das über feine Materialbrücken 5 angeformte Garantieband 4. Die Selbstöffner-Hülse 3 liegt in dieser Darstellung in ihrer Ausgangsposition, ist also ganz in die Drehkappe 1 eingezogen.FIG. 3 shows this self-opening closure with its three components in the assembled state in a longitudinal section along the central center axis of the closure. It can be seen that the self-opening sleeve 3 is located between the cylinder wall Segement 17,18 and the nozzle 2 and that the traversing web 23 extends at the upper edge of the sleeve 3 in the gap 19 between the adjacent cylinder wall segments 17,18. On the outside of the sleeve 3 can be seen the horizontal portion 13 of one of its guide ribs 12. On the inside of the neck 2 you can see the horizontal portions 21 of the guide webs 20, and on the outside of the nozzle 2, the grooves of the external thread 6 and slightly further down the On the inside of the rotary cap 1 whose internal thread 16 can be seen and at the bottom of the rotary cap 1 the fine material bridges 5 integrally formed guarantee strip 4. The self-opener Sleeve 3 is in this view in its initial position, so it is completely retracted into the rotary cap 1.

Im Folgenden wird nun beschrieben, wie die Bestandteile 1,2 und 3 dieses Selbstöffner-Verschlusses beim Öffnen des Verschlusses zusammenwirken und dabei das Papier- oder Kartonlaminat, auf welches der Stutzen 2 aufgeschweisst wurde, aufgeschnitten wird. Zunächst wird also das Garantieband 4 weggerissen. Dadurch wird die Drehkappe 1 zum Losschrauben freigegeben, indem sie sich am Stutzen 2 nach aufwärts bewegen kann. Die seitlichen Begrenzungsflächen der Zylinderwandsegemente 17 und 18 wirken nun auf den traversierenden Steg 23 an der Selbstöffner-Hülse 3 ein, das heisst sie nehmen ihn mit und versetzen ihn somit in eine Drehung, von oben gesehen in Löserichtung der Drehkappe 1, das heisst im Gegenuhrzeigersinn. In einer alternativen Ausführung kann anstelle eines einzigen taversierenden Steges auch ein solcher in Form eines Sterns mit drei um den Umfang verteilt radial vom Zentrum der Hülse 3 aus nach aussen verlaufenden Stegen realisiert werden, wobei dann entsprechend drei Zylinderwandsegmente eingesetzt werden, zwischen welche die drei Stege zu liegen kommen. Auch vier radiale Stege, welche zusammen ein Kreuz aus zwei den Hülsendurchmesser traversierenden Stegen bilden, sind denkbar, wobei dann vier Zylinderwandsegmente um den Umfang verteilt angeordnet sind. Wird nun aber die Hülse 3 über ihren Steg 23 im Gegenuhrzeigersinn in Drehung versetzt, so gleiten die aus den Figuren 1 und 2 hervorgehenden, hier nicht einsehbaren Führungsflächen 15 ihrer Führungsrippen 12 längs der Unterseite der Führungsstege 20 am Stutzen 2 nach unten. Mit der Linksdrehung der Drehkappe 1 geht deshalb eine steile, schraubenlinienförmige Abwärtsbewegung der Selbstöffner-Hülse 3 einher. Durch das steile Abwärtsbewegen wird das Papier- oder Kartonlaminates, welches sich über die lichte Weite des Stutzens 2 erstreckt, von der scharfen Spitze 24 des Stechdorns 10 am unteren Rand der Hülse 3 zunächst im wesentlichen durchstochen. Es wird dabei also bloss ein Loch in den Rand der Laminatscheibe gestochen, das heisst das Laminat wird durchstochen, nicht zerschnitten. Mikroskopisch gesehen wird das Laminatmaterial bei einer Stechung auf alle Seiten hin verdrängt und an der Stechstelle zerrissen. Die Reaktionskräfte der Stechbewegung werden über die Schweissung vom auskragenden Rand 9 des Stutzens 2 aufgenommen. Dieser erste Bewegungsabschnitt der Selbstöffner-Hülse erweist sich als entscheidend. Weil bei herkömmlichen Lösungen die Selbstöffner-Hülse einer Schraubenlinie folgend stetig nach abwärts drehen und ihre Zähne daher in einem flachen Winkel auf die Folie auftreffen, vermögen diese die Folie nicht zu durchstechen. Bei der hier vorgestellten Lösung aber folgt die Hülse in einer ersten Phase einer sehr steilen Abwärtsbewegung. Die scharfe Spitze 24 ihres Stechdorns 10 trifft daher in einem steilen Winkel auf die Folie auf und durchsticht diese zunächst praktisch lokal. Ist die Papier- bzw. Karton- oder Kunststofffolie einmal zerstochen, so ist die Hülse 3 unterdessen in ihrer untersten Position in Bezug auf den Stutzen 2 angelangt, das heisst die Führungsfläche 15 an ihren Führungsrippen 12 befindet sich nun am Ende der schräg verlaufenden Führungsstege 22 an der Innenwand des Stutzens bzw. am Anfang der horizontalen Abschnitte 21 der Führungsstege. Wird nun an der Drehkappe 1 weiter im Gegenuhrzeigersinn gedreht, so wird auch die Hülse 3 weiter im Gegenuhrzeigersinn gedreht, jedoch bewegt sie sich dabei nicht mehr abwärts, sondern vollführt eine Drehung in der Horizontalen. Der durch die Papier- oder Kartonfolie ragende Stechdorn 10 wirkt in der Folge mit seiner scharfen Schnittkante 11 als Messer. Die Schnittkante 11 schneidet somit längs des unteren Innenrandes des Stutzens 2 eine runde Scheibe aus dem Papier- oder Kartonlaminat. Die Schneidebwegung erstreckt sich über eine Drehung der Hülse um ca. 340°. Am Ende der Schneide-Drehung hängt die ausgeschnittene Scheibe bloss noch an einer dünnen Materialbrücke und wird durch die in Schneiderichtung wirkende Druckkraft der Schneidkante 11 nach unten in die Packung geschwenkt bzw. abgeklappt und in dieser abwärts geschwenkten Lage gehalten. Dieser Selbstöffner-Verschluss wirkt deshalb im Prinzip wie ein klassischer Büchsenöffner. Auch beim Öffnen einer Büchse ist es entscheidend, dass der Deckel zunächst angestochen wird, und zwar von einer im wesentlichen vertikalen Bewegung der Spitze des Schneidwerkzeuges auf und durch den Büchsendeckel. Erst wenn der Büchsendeckel von der Spitze des Schneidewerkzeuges durchstochen ist, folgt eine gesonderte, nunmehr horizontal verlaufende Schneidebewegung des Schneidwerkzeuges. Genau diesen Büchsenöffner-Effekt erzielt der vorliegende Selbstöffner-Verschluss, indem die Hülse zunächst steil abwärts fährt und in einer ersten Phase die Folie mit der Spitze 24 des Stechdorns 10 bloss durchsticht, und hernach in einer zweiten Phase der Stechdorn 10 mit seiner Schneidkante 11 als Schneidwerkzeug wirkt, indem die Hülse in der Horizontalen gedreht wird. Die Bewegung der Hülse ist deshalb als wesentliches Merkmal unstetig. Auf eine steile Abwärtsbewegung zum Anstechen der Folie folgt nach einer Unstetigkeitsstelle eine horizontale Drehbewegung zum Schneiden. Das Anstechen und das Aufschneiden ist deutlich unterschieden, wie beim Öffnen einer Metallbüchse mit einem Büchsenöffner. Auf der Innenseite des Stutzens 2 ist an seinem unteren Rand eine Ausnehmung 25 vorhanden, die beidseits von Rampen 26 eingefasst wird. In der Endphase der Drehbewegung der Hülse 3 gleitet ein horizontaler Abschnitt 21 einer seiner Führungsrippen 20 über die Rampe 26 und rastet in dieser Ausnehmung 25 ein. Danach kann die Hülse 3 weder weitergedreht noch zurückgedreht werden, sodass sie also nach erfolgtem Herausschneiden und Herunterschwenken der Laminatscheibe in dieser Lage festgehalten ist. Die fast gänzlich herausgeschnittene Laminatscheibe wird damit zuverlässig nach unten in die Flüssigkeitspackung geschwenkt gehalten. Bis die vollständige Schneidebewegung, also die Drehung der Hülse 3 um 340° nach erfolgtem Anstechen des Papier- oder Kartonlaminates abgeschlossen ist, wird die Drehkappe 1 am Stutzen 2 soweit nach oben geschraubt, dass die nach unten ragenden Zylinderwandsegmente 17,18 auf der Unterseite des Drehkappendeckels über den Steg 23 an der Hülse 3 hinausgehoben werden und also kein weiteres Drehmoment mehr auf denselben übertragen können. Die Drehkappe 1 wird in der Folge vollständig vom Stutzen 2 weggeschraubt und die Flüssigkeit kann nun aus der Flüssigkeitspackung über den innen freigelegten Stutzen 2 ausgeschenkt bzw. ausgegossen werden, oder im Fall eines Schüttgutes in der Packung kann dieses durch den Stutzen 2 ausgeschüttet werden. Hemach wird die Drehkappe 1 erneut auf den Stutzen 2 aufgeschraubt, um den Verschluss wieder zu verschliessen. Beim erneuten Aufschrauben der Drehkappe 1 zum Verschliessen des Verschlusses bewirken die schraubenlinienförmig nach unten verlaufenden unteren Ränder der Zylindersegmentwände 17,18, dass kein Drehmoment im Uhrzeigersinn auf den Steg 23 übertragen wird, indem diese schraubenlinienförmigen unteren Ränder bloss noch über die Oberseite des traversierenden Steges 23 gleiten, ihn jedoch nicht mehr mitnehmen können.In the following it will be described how the components 1, 2 and 3 of this self-opener closure cooperate when the closure is opened, thereby cutting open the paper or cardboard laminate onto which the connection piece 2 has been welded. First, therefore, the guarantee strip 4 is torn away. As a result, the rotary cap 1 is released for unscrewing by being able to move upwards on the neck 2. The lateral boundary surfaces of the Zylinderwandsegemente 17 and 18 now act on the traversing web 23 on the self-opener sleeve 3, that is, they take him along and move him thus in a rotation, seen from above in the release direction of the rotary cap 1, that is counterclockwise. In an alternative embodiment, instead of a single taversierende bridge also such in the form of a star with three circumferentially distributed radially from the center of the sleeve 3 outwardly extending webs are realized, in which case three cylinder wall segments are used, between which the three webs to come to rest. Also, four radial webs, which together form a cross of two webs traversing the diameter of the sleeve are conceivable, in which case four cylinder wall segments are arranged distributed around the circumference. If, however, the sleeve 3 is rotated counterclockwise via its web 23, then the guide surfaces 15 of its guide ribs 12 which emerge from FIGS. 1 and 2 slide along the underside of the guide webs 20 on the connecting piece 2 downwards. The left-hand rotation of the rotary cap 1 is therefore accompanied by a steep, helical downward movement of the self-opening sleeve 3. Due to the steep downward movement, the paper or cardboard laminate, which extends over the inside width of the neck 2, is initially substantially pierced by the sharp tip 24 of the piercing mandrel 10 at the lower edge of the sleeve 3. It is thus just a hole in the edge of the laminate disk engraved, that is, the laminate is pierced, not cut. Microscopically, the laminate material is displaced in a lancing on all sides and torn at the puncture site. The reaction forces of the piercing movement are taken up by the welding from the projecting edge 9 of the nozzle 2. This first movement section of the self-opening sleeve proves to be crucial. Because, in conventional solutions, following a self-opener sleeve, the self-opening sleeve steadily turns downwards and their teeth impinge on the film at a shallow angle, so they are incapable of piercing the film. In the solution presented here, however, the sleeve follows in a first phase a very steep downward movement. The sharp tip 24 of its lance 10 therefore strikes the foil at a steep angle and punctures it at first practically locally. If the paper or cardboard or plastic film pierced once, so the sleeve 3 has meanwhile reached its lowest position with respect to the nozzle 2, that is, the guide surface 15 at its guide ribs 12 is now located at the end of the oblique guide webs 22 on the inner wall of the nozzle or at the beginning of the horizontal portions 21 of the guide webs. If now rotated counterclockwise on the rotary cap 1, so also the sleeve 3 is rotated further counterclockwise, but it does not move down, but performs a rotation in the horizontal. The projecting through the paper or cardboard foil lancing mandrel 10 acts in the episode with its sharp cutting edge 11 as a knife. The cutting edge 11 thus cuts along the lower inner edge of the nozzle 2 a round disc from the paper or cardboard laminate. The Schneidebwegung extends over a rotation of the sleeve by about 340 °. At the end of the cutting rotation, the cut-out disc merely hangs on a thin material bridge and is pivoted and folded downwards into the pack by the pressing force of the cutting edge 11 acting in the cutting direction and held in this downwardly pivoted position. This self-opening closure therefore works in principle like a classic can opener. Even when opening a sleeve, it is crucial that the lid is first pierced, by a substantially vertical movement of the tip of the cutting tool on and through the sleeve cover. Only when the sleeve cover is pierced by the tip of the cutting tool, followed by a separate, now horizontal cutting movement of the cutting tool. Exactly this can opener effect achieved by the present self-opener closure by the sleeve initially moves steeply down and pierces the film with the tip 24 of the piercing 10 in a first phase, and then in a second phase of the piercing pin 10 with its cutting edge 11 as Cutting tool acts by the sleeve is rotated in the horizontal. The movement of the sleeve is therefore discontinuous as an essential feature. A steep downward movement to pierce the film is followed by a discontinuous horizontal rotational movement for cutting. The piercing and cutting is clearly different, as when opening a metal box with a can opener. On the inside of the neck 2, a recess 25 is present at its lower edge, which is bordered on both sides by ramps 26. In the final phase of the rotational movement of the sleeve 3, a horizontal portion 21 of one of its guide ribs 20 slides over the ramp 26 and engages in this recess 25 a. Thereafter, the sleeve 3 can neither be further rotated nor turned back, so they So after being cut and swung down the laminate disk is held in this position. The almost completely cut out laminate disk is thus kept reliably pivoted down into the liquid pack. Until the complete cutting movement, ie the rotation of the sleeve 3 is completed by 340 ° after the piercing of the paper or cardboard laminate, the rotary cap 1 is screwed on the neck 2 so far up that the downwardly projecting cylinder wall segments 17,18 on the bottom of the Drehkappendeckels be lifted over the web 23 on the sleeve 3 and therefore no more torque can transmit to the same. As a result, the rotary cap 1 is completely unscrewed from the neck 2 and the liquid can now be dispensed or poured out of the liquid pack via the neck 2 exposed on the inside, or in the case of a bulk material in the pack, this can be dispensed through the neck 2. Hemach is screwed the rotary cap 1 again on the neck 2, to close the closure again. When re-screwing the rotary cap 1 to close the closure, the helical downwardly extending lower edges of the cylinder segment walls 17,18 that no torque is transmitted clockwise to the web 23 by these helical lower edges just over the top of the traversing web 23rd glide, but can not take it anymore.

Anhand der Figuren 4 und 5 ist die Wirkungsweise dieses Selbstöffner-Verschlusses besonders schön einsehbar. Die Figur 4 zeigt dabei den Selbstöffner-Verschluss in zusammengebautem Zustand in perspektivischer Ansicht von schräg unten gesehen. Die Selbstöffner-Hülse 3 befindet sich in ihrem Ausgangszustand. An ihrem oberen Rand erkennt man ein Stück des traversierenden Steges 23, welcher ihren oberen Rand an zwei Stellen miteinander verbindet. Dieser Steg 23 liegt zwischen den beiden Zylinderwandsegmenten 17,18, welche an der Unterseite des Deckels der Drehkappe 1 angeformt sind. Wird die Drehkappe 1 in Löserichtung gedreht, das heisst in der hier gezeigten Ansicht von unten im Uhrzeigersinn, so nehmen die Zylinderwandsegmente 17,18 den dazwischenliegenden Steg 23 und damit die Hülse 3 mit, wodurch diese wegen der speziellen Führungsrippen 12 an ihrer Aussenseite und der Führungsstege 20 an der Innenseite des Stutzens 2 zwangshaft in einer steilen Spirale nach unten bewegt wird. Dabei wirkt die scharfe Spitze 24 des Stechdorns 10 als Stechspitze und durchsticht zunächst das an der Unterseite des auskragenden Randes 9 des Stutzens 2 angeschweisste Papier- oder Kartonlaminat der Verbundpackung.With reference to Figures 4 and 5, the operation of this self-opener closure is particularly nice to see. FIG. 4 shows the self-opener closure in the assembled state in a perspective view obliquely from below. The self-opening sleeve 3 is in its initial state. At its upper edge can be seen a piece of the traversing web 23, which connects their upper edge in two places. This web 23 is located between the two cylinder wall segments 17,18, which are integrally formed on the underside of the lid of the rotary cap 1. If the rotary cap 1 is rotated in the release direction, that is to say in the view shown here from below in a clockwise direction, then the cylinder wall segments 17, 18 take up the intermediate web 23 and thus the sleeve 3, as a result of which special guide ribs 12 on its outer side and the guide webs 20 on the inside of the nozzle 2 forcibly moved in a steep spiral down. In this case, the sharp tip 24 of the piercing pin 10 acts as a piercing tip and pierces first the welded on the underside of the projecting edge 9 of the nozzle 2 paper or cardboard laminate of the composite package.

In Figur 5 sieht man den Selbstöffner-Verschluss mit der Selbstöffner-Hülse in ausgefahrenem bzw, ganz niedergefahrenem Zustand. Hat die Hülse 3 einmal diese Position erreicht, so dreht sie sich fortan nur noch in einer horizontalen Ebene weiter, wobei der Stechdorn 10 nunmehr als Messer wirkt, weil seine in hier von unten gesehen in Richtung Uhrzeigersinn hin gerichtete Kante als scharfe Schneidkante 11 ausgebildet ist. Diese Schneidkante 11 fährt bei weiterer Drehung der Drehkappe 1 um 340° längs des unteren Innenrandes des Stutzens 2 und schneidet dabei eine kreisförmige Scheibe aus dem Papier- oder Kartonlaminat, welches an der Unterseite der Auskragung 9 angeschweisst ist, jedoch hier nicht eingezeichnet ist. Sobald die Hülse 3 nach erfolgtem Anstechen des Papierlaminates eine Drehung um 340° vollführt hat, rastet das Ende einer der horizontalen Abschnitte 13 ihrer Führungsrippen 12 in der Ausnehmung 25 an der Innenwand des Stutzens 2 ein und verhindert, dass die Hülse 3 weitergedreht oder auch in Gegenrichtung gedreht werden kann. Die Hülse 3 hat in dieser Position die fast ganz aus dem Laminat herausgeschnittene Scheibe nach unten in den Behälter hineingeschwenkt und hält sie in dieser Position gesichert fest. Der Durchfluss durch den Stutzen 2 ist somit freigegeben.FIG. 5 shows the self-opening closure with the self-opening sleeve in the extended or fully lowered state. Once the sleeve 3 has reached this position, it continues to rotate only in a horizontal plane, with the piercing pin 10 now acting as a knife, because its edge, which is directed in the direction of clockwise from here, is designed as a sharp cutting edge 11 , This cutting edge 11 moves on further rotation of the rotary cap 1 by 340 ° along the lower inner edge of the nozzle 2 and thereby cuts a circular disc from the paper or cardboard laminate, which is welded to the underside of the projection 9, but not shown here. As soon as the sleeve 3 has performed a rotation of 340 ° after the paper laminate has been pierced, the end of one of the horizontal sections 13 of its guide ribs 12 engages in the recess 25 on the inner wall of the neck 2 and prevents the sleeve 3 from being further rotated or even slid into it Opposite direction can be turned. The sleeve 3 has pivoted in this position, almost completely cut out of the laminate disc down into the container and keeps it secured in this position. The flow through the nozzle 2 is thus released.

Die Figur 6 zeigt den Ausguss-Stutzen 2 und die Hülse 3 des Selbstöffner-Verschluss in zusammengebautem Zustand in perspektivischer Ansicht von schräg unten gesehen, wobei aber die Selbstöffner-Hülse 3 vollständig vom Stutzen 2 herausgelöst dargestellt ist, damit die spezielle Anordnung ihrer Führungsrippen 12 besser einsehbar ist und ihre Funktion daher besser verstanden werden kann.FIG. 6 shows the pouring spout 2 and the sleeve 3 of the self-opening closure in the assembled state in a perspective view obliquely from below, but with the self-opening sleeve 3 completely detached from the spout 2 so that the special arrangement of its guide ribs 12 is better visible and their function can therefore be better understood.

Die Figur 7 zeigt noch eine alternative Ausführung dieses Selbstöffner-Verschlusses zur Montage auf dem membranversiegelten Hals eines Behälters oder einer Flasche. Der Ausguss-Stutzen 2 weist deshalb an seiner Unterseite keinen auskragenden Rand auf, sondern ist über eine Schulter 27 in eine Gewindehülse 28 übergeführt, die auf das Aussengewinde eines Flaschenhalses oder auf den Ausguss-Stutzen eines beliebigen Behältnisses geschraubt werden kann, der an seinem oberen Rand mit einer Folie verschlossen und versiegelt ist.FIG. 7 shows an alternative embodiment of this self-opening closure for mounting on the membrane-sealed neck of a container or a bottle. The spout-neck 2 therefore has on its underside no projecting edge, but is transferred via a shoulder 27 in a threaded sleeve 28 which can be screwed onto the external thread of a bottle neck or on the spout nozzle of any container at its upper Edge is closed with a foil and sealed.

Claims (10)

  1. Self-opener closure for composite packagings and for container spouts sealed with film material, comprising a spout (2) which is mountable on a composite packaging or on a container spout sealed with film material, an associated rotary cap (1) and a self-opener (3) being arranged within the spout (2), said self-opener (3) being rotatable by means of the rotary cap (1), characterised in that the inner side of the spout (2) is provided with at least two guide webs (20) being arranged around its inner circumference and having varying inclines, so that the sleeve-shaped self-opener (3), at whose outer side there are arranged at least two guide ribs (12) each having a guide surface (15), and when continuously rotating within the spout (2) guiding its guide surfaces (15) at the guide webs (20), initially follows a downwardly directed movement along a steep screw-path which hereafter goes over into a pure horizontal rotational movement.
  2. Self-opener closure for composite packagings and for container spouts sealed with film material according to claim 1, characterised in that the self-opener is formed as a sleeve (3), comprising at its lower edge at least one lancing mandrel (10) having a sharp, downwardly projecting tip (24), and which comprises a sharp edge (11) at its flank showing in a counter-clockwise circumferential direction when seen from above.
  3. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that the rotary cap (1) comprises at its inner side at least two detached cylinder wall segments (17, 18) being spaced apart from each other in circumferential direction, and that the self-opener is formed as a sleeve (3), which comprises at the inner side of its upper edge at least one straight or angled web (23) extending radially from the sleeve axis and traversing the diameter, which web (23) fits between the spaces of the cylinder wall segments (17, 18) at the rotary cap (1), whereby the sleeve wall is arranged between the cylinder wall segments (17, 18) and the spout walls, and that the sleeve (3) has at its outer side at least two continuous guide ribs (12) which are arranged in distribution over its circumference, which cooperate with the same number of guide webs (20) being arranged at the inner side of the spout (2) in distribution over its circumference, in such a manner that when the rotary cap (1) is rotated, its torque is transmitted over the lateral limiting edges of the cylinder wall segments (17, 18) to the traversing web (23) and thus to the sleeve (3), and that the guide ribs (12) at the sleeve (3) and spout (2) are formed such, that when rotated, the sleeve (3) initially describes a steep downwardly directed screwline movement and subsequently assumes a purely rotational movement in a horizontal plane.
  4. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that the rotary cap (1) comprises at its inner side two detached cylinder wall segments (17, 18) being spaced apart from each other in circumferential direction, and that the self-opener is formed as a sleeve (3), which comprises at the inner side of its upper edge at least one traversing web (23) which traverses its diameter, said traversing web (23) fits between the spaces of the cylinder wall segments (17, 18) at the rotary cap (1), whereby the sleeve wall is arranged between the cylinder wall segments (17, 18) and the spout walls, and that the sleeve (3) at its outer side comprises at least two continuous guide ribs (12) arranged in distribution over its circumference, which interact with the same number of guide webs (20) which are arranged at the inner side of the spout (2) in distribution over its circumference, in such a manner, that when the rotary cap (1) is rotated its torque is transmitted over the lateral limiting edges of the cylinder wall segments (17, 18) to the traversing web (23) and thus to the sleeve (3) and that the guide webs (12) at the sleeve (3) and spout (2) are formed such, that when rotated, the sleeve (3) firstly describes a steep downwardly directed screwline and subsequently assumes a purely rotational movement in a horizontal plane.
  5. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of claims 1 or 2, characterised in that the rotary cap (1), at the inner side of its cap lid, comprises three free-standing cylinder wall segments (17, 18) being spaced apart from each other in a circumferential direction, and that the self-opener is formed as a sleeve (3), which comprises at the inner side of its upper edge a star-shaped web (23) composed of three webs extending radially from the sleeve axis and which fit between the spaces of the cylinder wall segments (17, 18) at the rotary cap (1), whereby the sleeve wall is arranged between the cylinder wall segments (17, 18) and the spout walls, and that the sleeve (3) at its outer side comprises at least two continuous guide ribs (12) arranged in distribution over its circumference, which interact with the same number of guide webs (20) which are arranged at the inner side of the spout (2) in distribution over its circumference, in such a manner, that when the rotary cap (1) is rotated its torque is transmitted over the lateral limiting edges of the cylinder wall segments (17, 18) to the traversing web (23) and thus to the sleeve (3) and that the guide webs (12) at the sleeve (3) and spout (2) are formed such, that when rotated, the sleeve (3) firstly describes a steep downwardly directed screwline and subsequently assumes a purely rotational movement in a horizontal plane,
  6. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that the lower edges of the cylinder wall segments (17, 18) each form a like curve sloping in an axial direction with respect to the cylinder.
  7. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that the guide ribs (12) at the self-opener sleeve (3) and the guide webs (20) at the spout (2) are designed such, that the guide ribs (12) at the outer wall of the self-opener sleeve (3) are each composed of a horizontal section (13) and an adjoining vertical section (14), whereby the tip of the right angle formed by these sections (13, 14) is bevelled at an angle of 45° with respect to the outer side of its legs, which forms a guide surface (15), and that the guide webs (20) at the inner wall of the spout (2) are each composed of a section (22) extending with a constant inclination at the circumferential wall and an adjoining horizontal section (21).
  8. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that at the lower inner edge of the spout (2) there is provided a recess (25) which is bordered by a ramp (26), and which is intended for receiving the end of a guide rib (12) of the self-opener sleeve (3) in the end position of its rotational movement.
  9. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that the sleeve (3) at its outer side comprises three or four continuous guide ribs (12) arranged in distribution over its circumference, which interact with the same number of guide webs (20) which are arranged at the inner side of the spout (2) in distribution over its circumference, in such a manner, that when the rotary cap (1) is rotated its torque is transmitted over the lateral limiting edges of the cylinder wall segments (17, 18) to the traversing web (23) and thus to the sleeve (3) and that the guide webs (12) at the sleeve (3) and spout (2) are formed such, that when rotated, the sleeve (3) firstly describes a steep downwardly directed screwline and subsequently assumes a purely rotational movement in a horizontal plane.
  10. Self-opener closure for composite packagings and for container spouts sealed with film material according to one of the previous claims, characterised in that the discharge spout (2) is a threaded spout and the rotary cap (1) is an associated threaded cap, or that the discharge spout (2), together with the rotary cap (1), form a bayonet coupling, and that the discharge spout (2) in its lower region is provided with a bead (7) which is obliquely angled at its upper side, and at its lower side forms an angular rim (8), and that the rotary cap (1) comprises at its lower edge a guarantee strip (4) moulded thereto by thin material bridges (5) designed to be predetermined breaking points, which can be irreversibly pushed over the bead (7).
EP03718593A 2002-05-31 2003-05-22 Self-opening closure for composite packagings or for container connection pieces closed by a film material Expired - Lifetime EP1509456B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH9172002 2002-05-31
CH917022002 2002-05-31
PCT/CH2003/000328 WO2003101843A1 (en) 2002-05-31 2003-05-22 Self-opening closure for composite packagings or for container connection pieces closed by a film material

Publications (2)

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EP1509456A1 EP1509456A1 (en) 2005-03-02
EP1509456B1 true EP1509456B1 (en) 2006-06-28

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US (1) US7207465B2 (en)
EP (1) EP1509456B1 (en)
KR (1) KR101027209B1 (en)
CN (1) CN100431928C (en)
AU (1) AU2003222713A1 (en)
BR (1) BR0311396B1 (en)
CA (1) CA2485300C (en)
DE (1) DE50304066D1 (en)
ES (1) ES2270005T3 (en)
MX (1) MXPA04011678A (en)
RU (1) RU2314238C2 (en)
WO (1) WO2003101843A1 (en)

Cited By (4)

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DE102007057863A1 (en) 2007-11-29 2009-06-04 Sig Technology Ag Self-opening and resealable pouring spout made of plastic for application on a package for liquids
EP2368808A2 (en) 2007-11-29 2011-09-28 SIG Technology AG Self-opening and reclosable pouring element made of plastic for application on a package for liquids
EP2287082A1 (en) 2009-08-17 2011-02-23 Tetra Laval Holdings & Finance SA Multilayer sheet packaging material for producing sealed packages of pourable food products
WO2011020634A1 (en) 2009-08-17 2011-02-24 Tetra Laval Holdings & Finance S.A. Sheet packaging material for producing sealed packages of pourable food products
US9487324B2 (en) 2009-08-17 2016-11-08 Tetra Laval Holdings & Finance S.A. Sheet packaging material for producing sealed packages of pourable food products
WO2014001507A1 (en) 2012-06-29 2014-01-03 Sig Technology Ag Composite pack with a pouring element, and blank for producing such a pack
US9738427B2 (en) 2012-06-29 2017-08-22 Sig Technology Ag Composite pack having a pouring element, and blank for producing such pack
EP3943408A1 (en) 2020-07-24 2022-01-26 SIG Technology AG Pouring element with securing cutting element guide
WO2022017662A1 (en) 2020-07-24 2022-01-27 Sig Technology Ag Pouring element having a safeguarding cutting-element guide

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CA2485300C (en) 2011-04-12
BR0311396B1 (en) 2012-06-12
MXPA04011678A (en) 2005-07-05
BR0311396A (en) 2005-03-15
DE50304066D1 (en) 2006-08-10
CN100431928C (en) 2008-11-12
WO2003101843A1 (en) 2003-12-11
RU2004132851A (en) 2005-09-10
KR20040106581A (en) 2004-12-17
US7207465B2 (en) 2007-04-24
AU2003222713A1 (en) 2003-12-19
US20050242113A1 (en) 2005-11-03
EP1509456A1 (en) 2005-03-02
KR101027209B1 (en) 2011-04-06
RU2314238C2 (en) 2008-01-10
CA2485300A1 (en) 2003-12-11
ES2270005T3 (en) 2007-04-01
CN1655991A (en) 2005-08-17

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