EP2739539B1 - Container cover with rotating closure - Google Patents

Container cover with rotating closure Download PDF

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Publication number
EP2739539B1
EP2739539B1 EP12725757.4A EP12725757A EP2739539B1 EP 2739539 B1 EP2739539 B1 EP 2739539B1 EP 12725757 A EP12725757 A EP 12725757A EP 2739539 B1 EP2739539 B1 EP 2739539B1
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EP
European Patent Office
Prior art keywords
teeth
cutting
cutting edge
plastic film
container
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EP12725757.4A
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German (de)
French (fr)
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EP2739539A1 (en
Inventor
Dan Barron
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/34—Arrangement or construction of pull or lift tabs
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • 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
    • 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

Definitions

  • the present invention relates to a container made of plastic film container shell with a rotating closure, which has a rotatable cylindrical cutter, with the features of the preamble of claim 1.
  • a known container made of plastic film container with a rotating closure which has a rotatable cylindrical cutter such as in EP 1 396 435 discloses a screw-like mounted in the cap and slidable in the direction of the container shell cutting element whose cutting edge has at least a number of teeth extending along the cutting edge in the opposite direction to the rotational direction.
  • the teeth are arranged so that they gradually increase in height in the rotational direction, so that decreases in the rotational direction of the distance between the teeth and the container shell. This has the consequence that the foremost tooth in the direction of rotation has the highest tooth tip and therefore the first to pierce the container shell.
  • the subsequent teeth arranged in the direction of rotation behind the foremost tooth and gradually increasing at a distance from the container casing therefore contribute only marginally or not at all to the cutting process of the container casing.
  • the illustrated and described cutting device acts during rotation by means of the foremost tooth in the rotational direction in a kind of shock movement cutting on the container shell.
  • the high forces mainly act on the foremost blade, which during the cutting process results in a dulling thereof and thus a reduction in cutting efficiency.
  • cutting devices have heretofore only been applied to container sleeves of laminated film material or to container sleeves made of high-density polyethylene and having a die which has been welded to a patch on low-density polyethylene, after which the closure device with the cutting device is welded onto these patches so that the cut in the sheet material could be made of low-density polyethylene.
  • WO2004 / 083055 discloses a cutting device which is mounted helically displaceable in the cap and has means, so that is moved at a first unscrewing movement of the screw cap of the piercer in the direction of the container shell.
  • This cutting element has a cutting edge which, as in EP 1 396 435 discloses a main blade which penetrates by the helical movement of the cutting edge pushing cutting into the container shell.
  • EP 1 396 435 discloses a main blade which penetrates by the helical movement of the cutting edge pushing cutting into the container shell.
  • the present invention relates to a container made of plastic film container shell with a rotating closure, which has a rotatable cylindrical cutter according to claim 1.
  • the cutting device has a cutting element, at the lower edge at least one cutting edge portion is arranged.
  • This cutting edge portion has at least three, four, five, six, seven, eight, nine, ten, eleven or twelve teeth lying on a, relative to the bag cover, inclined line, so that the direction of rotation in the front tooth during cutting with the Plastic film comes into contact first.
  • the distance between the tips of the at least three teeth and the container shell of the closure device to be severed on the container shell varies such that the tip of the first tooth is the smallest distance from the container shell, and the distance successively increases with each trailing tooth to the container shell.
  • the inclination of the line on which the teeth lie is selected such that at least approximately maximum deformation of the container casing before its perforation by the first tooth at least two trailing teeth of the same cutting edge portion are also in direct contact with the container casing.
  • the cutting element has a plurality of cutting edge portions, wherein each cutting edge portion with a separate set is provided by a plurality of teeth and are spaced from a recess.
  • the recess is hook-shaped with a tapered recess plank with tear-off edge.
  • the cutting device has along its circumference a cutout, which is, for example, a maximum of up to half of the entire circumferential line of the cutting device.
  • the container cover which can be cut by the cutting device can consist of materials from one of the following groups: plastic, paper, light metal, cardboard and multilayer laminated films of at least two of the aforementioned materials.
  • the plastic film is made of one of the following materials: polypropylene, polyethylene and polyamide.
  • the light metal may consist of aluminum (for example with a thickness of at least approximately 8 ⁇ m).
  • the closure device comprises a rotatable cutting device according to one of the aforementioned embodiments.
  • FIG. 2A and FIG. 2B comprises a cylindrically shaped and rotatable cutting device 100 for cutting through a container casing 190, a cutting element 115 and a screw element 105 which can be screwed to a closure cap (not illustrated) and which has a thread 108 .
  • the screw member 105 and the cutting element 115 are mechanically coupled together, and are for example monolithically molded or welded.
  • the outermost diameter of the screw element 105, or the diameter of the external thread is larger, equal to or smaller than the outermost diameter of the cutting element 115th
  • the cutting edge portion 120 includes, for example, at least 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 teeth 130, wherein the inclination ⁇ of the virtual line Q on which the teeth 130 are located is that in the direction of rotation R foremost tooth 130 during the cutting process with the container shell 190 first comes into contact.
  • the tips of the teeth 130 are disposed on the lower edge 110 of the cutting element 115 so that when the cutting device 100 is mounted on the container shell 190 , the distance h between the tips of the teeth 130 and the underlying container shell 190 varies such that the tip of the front tooth 130 in the direction of rotation R to the container shell 190 the smallest distance h 1 and the tip of the last tooth 130 n has the greatest distance h n , wherein the distances of the first tooth 130 1 to the last tooth 130 n , in the assembled state, to the container shell 190th increase sequentially.
  • the cutting element 115 and the closure cap are arranged so that the first unscrewing of the closure cap rotates the cutting element 115 both in the direction of rotation R , and is moved linearly in the direction S to the container shell 190 .
  • the cutting element 115 moves helically in the direction of the container casing 190.
  • the foremost tooth 130 first comes into contact with the container casing 190 . Due to the force which the foremost tooth 130 exerts on the container casing 190 , it is stretched and deformed in the direction of the container contents (arrow D ). As in FIG. 2A shown schematically, the inclination ⁇ of the line Q is selected so that at least approximately maximum deformation of the container shell 190 before its perforation by the foremost tooth 130 and at least two follower teeth 130 2 and 130 3 in direct contact with the container shell 190 stand.
  • FIG. 2A and FIG. 2B schematically illustrated cutting device 300 has two cutting edge portions 120 .
  • Two cutting edge portions 120 may be suitable for a cutting device 100 having a nominal diameter of, for example, 10 mm or less.
  • the virtual line Q on which the teeth 130 lie to the underlying container shell 190 at least two inclinations.
  • the virtual line Q has two inclinations ⁇ and ⁇ , where ⁇ ⁇ , so that the inclination of a first set 131 of teeth 130 is less steep than the inclination of a second set 132 of teeth 130 facing the first set 131 in the direction of rotation R is downstream.
  • the teeth 130 of the second set 132 serve to completely cut through any incompletely severed fibers of the container casing 190 .
  • a cutting element 415 may have three cutting edge portions 120 .
  • a number of three cutting edge portions 120 may be suitable for a cutting device 100 having a nominal diameter of, for example, greater than 20 mm. It should be noted here that in one embodiment of the invention, the cutting element 115 has only one cutting edge section 120 , for example when the cutting element 115 has a nominal diameter of less than, for example, 10 mm, without compromising the balance of the forces acting on the cutting device 100 sacrificing.
  • the pitch and the pitch angle of the screw member 105 with the cutting element 115 are designed so that the complete unscrewing the cap of the screw member 105, the cutting element 115 acts in the container shell 190 so that the Cutting element 115 underlying container shell 190 (herein: opening piece) is incomplete incised and therefore not incompletely separated, to prevent falling of the cut-out opening piece in the container envelope contents.
  • the cutting element 115 is configured so that upon first unscrewing the cap, the cutting element 115 passes through a circular incision path, the circumferential length of this Einschneidepfads example, at least 50% to 70% and at most 70 to 99% of the at least approximately circular circumference of the cutting element 115 corresponds ,
  • the number and / or the arc length of the cutting edge sections 120 with the diameter of the cutting device 100 that is, as explained with reference to the following examples, requires a larger / smaller nominal diameter (and radius) the cutting device 100, respectively the arrangement of a correspondingly larger / smaller number of cutting edge portions 120 and / or a longer / shorter arc length of the cutting edge portions 120, wherein two successive cutting edge portions 120 spaced from a recess 140 are arranged side by side.
  • the cutting device 100 with a plurality of cutting edge sections 120 has at least one recess 140 .
  • a plurality of cutting edge portions 120 come simultaneously in contact with the container shell 190, so that an opening piece of the container shell 190 is cut in several places at the same time / sheared.
  • the number of cutting edge portions 120 which is in proportion to the diameter of the cutting device 100 , results in the most balanced possible load on the cutting element 115 during the helical cutting movement.
  • the cutting device 100 has a cutout 180 along its circumference.
  • this cutout 180 is at most half the total circumference of the cutting device 100 .
  • the cutting device 100 configured with the cutout 180 enables unimpeded flow of the container contents / product out of the opening of the pourer (not shown) through the cutout 180.
  • FIG. 5 shows a contour diagram, which schematically illustrates the refolding of the opening piece to the inside 192 of the container shell 190 .
  • fibers may accumulate on the cutting edge portion 120 such that one or more of the laminated films or membranes of the container wrap 190 to be cut are protected by the cutting edge portion 120 from these fibers and are only stretched or incompletely severed during rotation.
  • the recess 140 is hook-shaped with a tapered recess plank 142 with tear-off 144 designed.
  • tear-off 144 designed.
  • the torque M that must be applied to this cutter 100 to cut the container wrap 190 is, for example, about 60-70% of the torque of the prior art known cutters.
  • the cutting device 100 is adapted to cut open a container casing 190 comprising materials from one of the following group: plastic, paper, light metal, cardboard and multilayer laminated films of at least two of the aforementioned materials.
  • the plastic film consists of at least one of the following materials: polypropylene, polyethylene and polyamine.
  • the light metal may be made of aluminum, for example, has a thickness of 8 microns.
  • a closure device which can be applied to the container casing 190 comprises a rotatable cutting device 100 according to an embodiment of the invention.

Description

Technisches GebietTechnical area

Die vorliegende Erfindung betrifft eine aus Kunststofffolie gefertigte Behälterhülle mit einem rotierenden Verschluss, der eine rotierbare zylindrische Schneidvorrichtung hat, mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The present invention relates to a container made of plastic film container shell with a rotating closure, which has a rotatable cylindrical cutter, with the features of the preamble of claim 1.

Stand der TechnikState of the art

Eine bekannte aus Kunststofffolie gefertigte Behälterhülle mit einem rotierenden Verschluss der eine rotierbare zylindrische Schneidvorrichtung hat, wie zum Beispiel in EP 1 396 435 offenbart, umfasst ein schraubenartig in der Verschlusskappe gelagertes und in Richtung Behälterhülle verschiebbares Schneidelement, dessen Schneidkante wenigstens eine Anzahl von Zähnen aufweist, die sich entlang der Schneidkante in der entgegengesetzten Richtung zur Rotationsrichtung erstrecken. Die Zähne sind so angeordnet, dass sie nach und nach in Rotationsrichtung an Höhe zunehmen, so dass in Rotationsrichtung der Abstand zwischen den Zähnen und der Behälterhülle abnimmt. Dies hat zur Folge, dass der in Rotationsrichtung vorderste Zahn die höchste Zahnspitze aufweist und demnach als erster die Behälterhülle durchstösst. Die nachfolgenden, in Rotationsrichtung hinter dem vordersten Zahn angeordneten und nach und nach an Abstand zur Behälterhülle zunehmenden Zähne tragen deshalb nur marginal oder gar nicht zum Schneidvorgang der Behälterhülle bei. Mit anderen Worten, die dargestellte und beschriebene Schneidvorrichtung wirkt während der Rotation mittels des vordersten Zahns in Rotationsrichtung in einer Art Stossbewegung schneidend auf die Behälterhülle ein. Somit wirken beim Schneidevorgang durch die Behälterhülle die hohen Kräfte hauptsächlich auf die vorderste Klinge, die während des Schneidvorgangs zu einer Abstumpfung derselben und demnach zu einer Verminderung der Schneideeffizienz führen.A known container made of plastic film container with a rotating closure which has a rotatable cylindrical cutter, such as in EP 1 396 435 discloses a screw-like mounted in the cap and slidable in the direction of the container shell cutting element whose cutting edge has at least a number of teeth extending along the cutting edge in the opposite direction to the rotational direction. The teeth are arranged so that they gradually increase in height in the rotational direction, so that decreases in the rotational direction of the distance between the teeth and the container shell. This has the consequence that the foremost tooth in the direction of rotation has the highest tooth tip and therefore the first to pierce the container shell. The subsequent teeth arranged in the direction of rotation behind the foremost tooth and gradually increasing at a distance from the container casing therefore contribute only marginally or not at all to the cutting process of the container casing. In other words, the illustrated and described cutting device acts during rotation by means of the foremost tooth in the rotational direction in a kind of shock movement cutting on the container shell. Thus, during the cutting operation through the container shell, the high forces mainly act on the foremost blade, which during the cutting process results in a dulling thereof and thus a reduction in cutting efficiency.

Ferner, diese hauptsächlich an der vordersten Klinge der Schneidvorrichtung auftretenden verhältnismässig hohen Kräfte können zu einer ungewollten Beugung oder Abwinkelung des vordersten Zahnes der Schneidevorrichtung relativ zur Behälterhülle und somit zu einer Verminderung der Schneideeffizienz führen, was wiederum eine Erhöhung des anzuwendenden Drehmoments zur Folge hat.Furthermore, these relatively high forces occurring mainly at the foremost blade of the cutting device can lead to an unwanted bending or bending of the frontmost tooth of the cutting device relative to the container shell and thus to a reduction of the cutting efficiency, which in turn results in an increase of the applied torque.

Ein weiteres bekanntes Phänomen, das beim Einwirken einer Schneidvorrichtung in eine Behälterhülle auftritt, ist die Bildung von lokalen Dehnungen im Rotationspfad der Schneidvorrichtung beim Schneiden der Behälterhülle. Die Bildung solcher lokalen Dehnungen wirkt sich insofern erschwerend auf den Schneidevorgang aus, als diese zur Ausrichtung von Molekülen in Zugrichtung führt und das Elastizitätmodul erhöht, und daher zu erhöhten Kräften an den Zähnen führt, wodurch diese vom Rotationspfad abweichen oder gar abbrechen können. Ferner können sich Fasern an der Schneidante ansammeln, so dass eine oder mehrere der durchzuschneidendenden/durchzureissenden laminierten Folien oder Membranen durch die Fasern von der Schneidkante geschützt sind und während der Rotation nur gedehnt oder unvollständig durchgetrennt werden. Hierdurch entsteht eine ausgefranste Schnittlinie, wodurch der Ausgussstrahl gehindert oder abgelenkt austritt und entsprechend der Inhalt teilweise verschüttet wird. Des Weiteren können sich diese Fasern von der Behälterhülle loslösen und unkontrolliert in das Innere der Behälterhülle abfallen.Another well-known phenomenon that occurs when a cutting device acts in a container shell is the formation of local strains in the rotational path of the cutting device when cutting the container shell. The formation of such local strains exacerbates the cutting process in that it results in alignment of molecules in the tensile direction and increases the modulus of elasticity, thus leading to increased forces on the teeth, which may cause them to deviate or even break away from the rotational path. Further, fibers may accumulate on the cutting edge such that one or more of the laminated sheets or membranes to be cut through are protected by the fibers from the cutting edge and are only severed or incompletely severed during rotation. This results in a frayed cutting line, whereby the spout jet hindered or deflected emerges and according to the content is partially buried. Furthermore, these fibers can detach from the container shell and fall uncontrollably into the interior of the container shell.

Die bislang erwähnten Nachteile der bekannten Schneidvorrichtungen sind dem Fachmann seit Jahren bekannt. Bekannte Schneidvorrichtungen sind dazu geeignet Folien und Membrane durchzuschneiden, die typischerweise eine Materialsdichte von nur 0.910-0.940 g/cm3 und eine Dicke von 30 bis 150 µm aufweisen. Diese Parameter sind charakteristisch für Material bestehend aus Low-Density Polyaethylen. Somit muss die Behälterhülle mindestens an der aufzuschneidenden Stelle aus einem durch die Schneidvorrichtung schneidbarem Material bestehen. Jedoch reicht in den meisten Fällen die obengenannte Dichte und/oder Dicke solch schneidbarer Materialien nicht aus, um den Inhalt in den Behälterhüllen aus reiner Kunststofffolie dauerhaft verlässlich aufbewahren zu können. Mit anderen Worten, mit bekannten Schneidvorrichtungen auftrennbares Material kann verhältnismässig leicht reissen und/oder tatsächlich im Gebrauch auftretenden Druck bersten. Deswegen ist es erforderlich eine aus reiner Kunststofffolie bestehende Behälterhülle aus High-Density Polyaethylen zu fertigen. Dieses Material liess sich aber mit den bekannten Schneidvorrichtungen nicht aufschneiden. Entsprechend wurden Schneidvorrichtungen bisher nur auf Behälterhüllen aus laminiertem Folienmaterial angebracht oder auf Behälterhüllen, die aus High-Density Polyaethylen bestehen und eine Ausstanzung aufweisen, die mit einem Flicken am Low-Density Polyaethylen verschweisst wurde, woran man die Verschlussvorrichtung mit der Schneidvorrichtung auf diesen Flicken aufgeschweisst hat, so dass der Schnitt im Folienmaterial aus Low-Density Polyaethylen angebracht werden konnte.The disadvantages of the known cutting devices mentioned so far have been known to the skilled person for years. Known cutting devices are suitable for cutting through films and membranes which typically have a material density of only 0.910-0.940 g / cm 3 and a thickness of 30 to 150 μm. These parameters are characteristic of material consisting of low-density polyethylene. Thus, the container envelope must be at least at the point to be cut from a cutting material by the cutting device. However, in most cases, the above-mentioned density and / or thickness of such cuttable materials is not sufficient to be able to store the contents in the container cases made of pure plastic film permanently reliable. In other words, material which can be separated by known cutting devices can tear relatively easily and / or actually burst in use. Therefore, it is necessary to produce a container made of pure plastic film container shell of high-density polyethylene. However, this material could not be cut open with the known cutting devices. Accordingly, cutting devices have heretofore only been applied to container sleeves of laminated film material or to container sleeves made of high-density polyethylene and having a die which has been welded to a patch on low-density polyethylene, after which the closure device with the cutting device is welded onto these patches so that the cut in the sheet material could be made of low-density polyethylene.

Entsprechend ist der Aufwand für die Produktion einer Behälterhülle dieser Art und die Anbringung der Schneidvorrichtung darauf gross.Accordingly, the cost of producing a container shell of this type and the attachment of the cutting device is large.

Weitere bekannte Verschlussvorrichtungen weisen sogenannte Schneidvorrichtungen oder Durchstosser auf, die zumindest in ihrer Funktionsweise ähnlich der in EP 1 396 436 offenbarten Verschlussvorrichtung sind. WO2004/083055 beispielsweise offenbart eine Schneidvorrichtung, die schraubenartig verschiebbar in der Verschlusskappe gelagert ist und Mittel aufweist, so dass bei einer erstmaligen Abschraubbewegung der Schraubbkappe der Durchstosser in Richtung Behälterhülle bewegt wird. Dieses Schneidelement weist eine Schneidkante auf, die wie in EP 1 396 435 eine Hauptklinge offenbart, die durch die schraubenförmige Bewegung der Schneidkante stossend schneidend in die Behälterhülle eindringt. Beim bisher bekannten Stand der Technik wirkt bei jedem Schneidelement jeweils nur die vorderste Schneidkante stossend schneidend auf die Behälterhülle ein. Demzufolge weist auch der in WO2004/083055 offenbarte Durchstosser zumindest bezüglich der auftretenden Kräfte und Wirkungen die gleichen Probleme auf, wie bei die in EP 1 396 436 offenbarte Schneidvorrichtung.Other known closure devices have so-called cutting devices or piercers, which at least in their operation similar to those in EP 1 396 436 disclosed closure device are. WO2004 / 083055 For example, discloses a cutting device which is mounted helically displaceable in the cap and has means, so that is moved at a first unscrewing movement of the screw cap of the piercer in the direction of the container shell. This cutting element has a cutting edge which, as in EP 1 396 435 discloses a main blade which penetrates by the helical movement of the cutting edge pushing cutting into the container shell. In the previously known state of the art, only the foremost cutting edge acts on the container casing in an intersecting manner with each cutting element. Consequently, the in WO2004 / 083055 At least with regard to the occurring forces and effects revealed Durchstosser the same problems as in the EP 1 396 436 disclosed cutting device.

Beschreibung der ErfindungDescription of the invention

Es ist demnach die Aufgabe der vorliegenden Erfindung eine aus Kunststofffolie gefertigte Behälterhülle mit einem rotierenden Verschluss, der eine rotierbare zylindrische Schneidvorrichtung hat, der eingangs genannten Art zu schaffen, wobei die Schneidvorrichtung ein geringeres Drehmoment zur Anwendung erfordert, und durch dessen Ausgestaltung sich die Anbringung der Schneidvorrichtung auf einen Flicken aus schneidbaren Material erübrigt, was wiederum den Fertigungsaufwand der Behälterhülle und das Anbringen der Schneidvorrichtung darauf reduziert. Diese Aufgabe löst eine aus Kunststofffolie gefertigte Behälterhülle mit einem rotierenden Verschluss, der eine rotierbare zylindrische Schneidvorrichtung hat, mit den Merkmalen des Patentanspruchs 1.It is therefore the object of the present invention made of a plastic film container shell with a rotating closure, which has a rotatable cylindrical cutting device to provide the type mentioned, wherein the cutting device requires a lower torque for application, and by the design, the attachment of the Cutting device is superfluous to a patch of cuttable material, which in turn reduces the manufacturing cost of the container shell and the attachment of the cutting device thereon. This object is achieved by a container made of plastic film container shell with a rotating closure, which has a rotatable cylindrical cutting device, with the features of claim 1.

In den Figuren sind bevorzugte Ausführungsformen des Erfindungsgegenstands im Detail dargestellt.

  • FIGUR 1A zeigt schematisch eine Seitenansicht einer Schneidvorrichtung mit zwei Schneidkantenabschnitten und jeweils einem Satz Zähne der eine Neigung α zur daran montierten Behälterhülle aufweist, entsprechend einer ersten Ausführungsform des Erfindungsgegenstandes,
  • FIGUR 1B zeigt schematisch eine Aufsicht eines unteren Randes eines Schneidelements einer Schneidvorrichtung entsprechend der ersten Ausführungsform des Erfindungsgegenstandes,
  • FIGUR 2A zeigt schematisch eine partielle Seitenansicht eines Schneidelements einer Schneidvorrichtung in Kontakt mit einer Behälterhülle, entsprechend der ersten Ausführungsform des Erfindungsgegenstandes,
  • FIGUR 2B zeigt schematisch eine bezüglich der Ansicht nach FIGUR 1A um 90° gedrehte Unteransicht der Schneidvorrichtung entsprechend der ersten Ausführungsform des Erfindungsgegenstandes,
  • FIGUR 3A zeigt schematisch eine Seitenansicht einer Schneidvorrichtung mit zwei Schneidkantenabschnitten, welche jeweils mindestens zwei Sätze von Zähnen, die im montierten Zustand jeweils entsprechende Neigungen α und β aufweisen,
  • entsprechend einer zweiten Ausführungsform des Erfindungsgegenstandes,
  • FIGUR 3B zeigt schematisch eine Seitenansicht eines Schneidelements in gestreckter Form, entsprechend der zweiten Ausführungsform des Erfindungsgegenstandes,
  • FIGUR 4 zeigt schematisch eine perspektivische Ansicht eines Schneidelements mit drei Schneidkantenabschnitten, entsprechend einer dritten Ausführungsform des Erfindungsgegenstandes, und
  • FIGUR 5 ist ein Konturdiagramm, das schematisch die Umfaltung der Öffnungsstücks zur Innenseite der Behälterhülle darstellt.
In the figures, preferred embodiments of the subject invention are shown in detail.
  • FIGURE 1A schematically shows a side view of a cutting device with two cutting edge portions and a respective set of teeth of an inclination α to it mounted container shell, according to a first embodiment of the subject invention,
  • FIG. 1B 1 schematically shows a plan view of a lower edge of a cutting element of a cutting device according to the first embodiment of the subject invention,
  • FIGURE 2A schematically shows a partial side view of a cutting element of a cutting device in contact with a container shell, according to the first embodiment of the subject invention,
  • FIGURE 2B schematically shows a respect to the view FIGURE 1A 90 ° rotated bottom view of the cutting device according to the first embodiment of the subject invention,
  • FIG. 3A shows schematically a side view of a cutting device with two cutting edge portions, each having at least two sets of teeth, which have respective inclinations α and β in the mounted state,
  • according to a second embodiment of the subject invention,
  • FIG. 3B shows schematically a side view of a cutting element in an elongated form, according to the second embodiment of the subject invention,
  • FIG. 4 schematically shows a perspective view of a cutting element with three cutting edge portions, according to a third embodiment of the subject invention, and
  • FIG. 5 is a contour diagram that schematically illustrates the refolding of the opening piece to the inside of the container shell.

Es soll hier angemerkt werden, dass der Klarheit und Einfachheit halber Elemente in den Figuren nicht zwangsläufig im richtigen Massstab dargestellt sind. Die Dimension gewisser Elemente im Verhältnis zu anderen Elementen können beispielweise übertrieben dargestellt werden. Des Weiteren werden Bezugszeichen für identische Elemente in verschiedenen Figuren nicht immer wiederholt.It should be noted here that for the sake of clarity and simplicity, elements in the figures are not necessarily shown to the correct scale. The dimension of certain elements in relation to other elements can, for example be exaggerated. Furthermore, reference numerals for identical elements in different figures are not always repeated.

Zusammenfassung der ErfindungSummary of the invention

Die vorliegende Erfindung betrifft eine aus Kunststofffolie gefertigte Behälterhülle mit einem rotierenden Verschluss, der eine rotierbare zylindrische Schneidvorrichtung hat, gemäß Anspruch 1. Die Schneidvorrichtung weist ein Schneidelement auf, an deren unterer Rand mindestens ein Schneidkantenabschnitt angeordnet ist. Dieser Schneidkantenabschnitt weist mindestens drei, vier, fünf, sechs, sieben, acht, neun, zehn, elf oder zwölf Zähne auf, die auf einer, relativ zur Beutehülle, geneigt verlaufenden Linie liegen, so dass der in Drehrichtung vorderste Zahn beim Schneidvorgang mit der Kunststofffolie zuerst in Berührung kommt.The present invention relates to a container made of plastic film container shell with a rotating closure, which has a rotatable cylindrical cutter according to claim 1. The cutting device has a cutting element, at the lower edge at least one cutting edge portion is arranged. This cutting edge portion has at least three, four, five, six, seven, eight, nine, ten, eleven or twelve teeth lying on a, relative to the bag cover, inclined line, so that the direction of rotation in the front tooth during cutting with the Plastic film comes into contact first.

Anders ausgedrückt variiert, in einer Ausführungsform des Erfindungsgegenstandes, im montierten Zustand der Abstand zwischen den Spitzen der mindestend drei Zähne und der zu durchtrennenden Behälterhülle der Verschlussvorrichtung auf der Behälterhülle, so dass die Spitze des ersten Zahns den kleinsten Abstand zur Behälterhülle aufweist, und der Abstand sukzessive mit jedem Folgezahn zur Behälterhülle zunimmt.In other words, in one embodiment of the subject invention, in the assembled state, the distance between the tips of the at least three teeth and the container shell of the closure device to be severed on the container shell varies such that the tip of the first tooth is the smallest distance from the container shell, and the distance successively increases with each trailing tooth to the container shell.

Des Weiteren ist erfindungsgemäß die Neigung der Linie auf der die Zähne liegen so gewählt, dass bei mindestens annährend maximaler Deformation der Behälterhülle vor deren Perforation durch den ersten Zahn mindestens zwei Folgezähne desselben Schneidkanteabschnitts ebenfalls in direkten Kontakt mit der Behälterhülle stehen.Furthermore, according to the invention, the inclination of the line on which the teeth lie is selected such that at least approximately maximum deformation of the container casing before its perforation by the first tooth at least two trailing teeth of the same cutting edge portion are also in direct contact with the container casing.

In einer Ausführungsform der Erfindung weist das Schneidelement eine Mehrzahl von Schneidkantenabschnitte auf, wobei jeder Schneidkantenabschnitt mit einem separaten Satz von einer Mehrzahl von Zähnen versehen ist und von einer Aussparung beabstandet angeordnet sind.In one embodiment of the invention, the cutting element has a plurality of cutting edge portions, wherein each cutting edge portion with a separate set is provided by a plurality of teeth and are spaced from a recess.

In einer Ausführungsform der Erfindung ist die Aussparung hakenförmig mit einer angeschrägten Aussparungsplanke mit Abreisskante ausgestaltet.In one embodiment of the invention, the recess is hook-shaped with a tapered recess plank with tear-off edge.

In einer Ausführungsform der Erfindung weist die Schneidvorrichtung entlang ihres Umfangs einen Ausschnitt auf, der zum Beispiel maximal bis zur Hälfte der gesamten Umfangslinie der Schneidvorrichtung beträgt.In one embodiment of the invention, the cutting device has along its circumference a cutout, which is, for example, a maximum of up to half of the entire circumferential line of the cutting device.

Die durch die Schneidvorrichtung aufschneidbare Behälterhülle kann aus Materialen aus einer der folgenden Grupper bestehen: Kunststoff, Papier, Leichtmetall, Karton und mehrlagigen laminierten Folien aus mindesten zwei der vorgenannten Materialien.The container cover which can be cut by the cutting device can consist of materials from one of the following groups: plastic, paper, light metal, cardboard and multilayer laminated films of at least two of the aforementioned materials.

In einer Ausführungsform der Erfindung besteht die Kunststofffolie aus einem der folgenden Materialien: Polypropylen, Polyethylen und Polyamid.In one embodiment of the invention, the plastic film is made of one of the following materials: polypropylene, polyethylene and polyamide.

Das Leichtmetall kann aus Aluminium (beispielsweise mit einer Dicke von mindestens annähernd 8 µm) bestehen.The light metal may consist of aluminum (for example with a thickness of at least approximately 8 μm).

In einer Ausführungsform der Erfindung umfasst die Verschlussvorrichtung eine rotierbare Schneidvorrichtung gemäss einer der eingangs erwähnten Ausführungsformen.In one embodiment of the invention, the closure device comprises a rotatable cutting device according to one of the aforementioned embodiments.

Beschreibung der Ausführungsformen der ErfindungDescription of the embodiments of the invention

Bezug nehmend auf Figur 1A, Figur 1B , Figur 2A und Figur 2B , umfasst eine zylindrischgeformte und rotierbare Schneidvorrichtung 100 zur Durchtrennung einer Behälterhülle 190, ein Schneidelement 115 und einen mit einer Verschlusskappe (nicht dargestellt) verschraubbares Schraubenelement 105, das ein Gewinde 108 aufweist. Das Schraubenelement 105 und das Schneidelement 115 sind mechanisch miteinander gekoppelt, und sind beispielsweise monolithisch miteinander geformt oder verschweisst. In entsprechenden Ausführungsformen der Erfindung ist der äusserste Durchmesser des Schraubenelements 105, beziehungsweise der Durchmesser des Aussengewindes grösser, gleich gross oder kleiner als der äusserste Durchmesser des Schneidelements 115. Referring to FIG. 1A, FIG. 1B . FIG. 2A and FIG. 2B , comprises a cylindrically shaped and rotatable cutting device 100 for cutting through a container casing 190, a cutting element 115 and a screw element 105 which can be screwed to a closure cap (not illustrated) and which has a thread 108 . The screw member 105 and the cutting element 115 are mechanically coupled together, and are for example monolithically molded or welded. In corresponding embodiments of the invention, the outermost diameter of the screw element 105, or the diameter of the external thread is larger, equal to or smaller than the outermost diameter of the cutting element 115th

Am unteren Rand 110 des Schneidelements 115 ist mindestens ein Schneidkantenabschnitt 120 zylindrisch und in Rotationsrichtung der Schneidvorrichtung 100 angeordnet.At the lower edge 110 of the cutting element 115 at least one cutting edge portion 120 is cylindrical and disposed in the rotational direction of the cutting apparatus 100. FIG.

Der Schneidkantenabschnitt 120 umfasst beispielsweise mindestens 3, 4, 5, 6, 7, 8, 9, 10, 11 oder 12 Zähne 130, wobei die Neigung α der virtuellen Linie Q auf der die Zähne 130 liegen so gewählt ist, dass der in Drehrichtung R vorderste Zahn 130 beim Schneidvorgang mit der Behälterhülle 190 zuerst in Berührung kommt.The cutting edge portion 120 includes, for example, at least 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 teeth 130, wherein the inclination α of the virtual line Q on which the teeth 130 are located is that in the direction of rotation R foremost tooth 130 during the cutting process with the container shell 190 first comes into contact.

Die Spitzen der Zähne 130 sind am unteren Rand 110 des Schneidelements 115 demnach so angeordnet, dass wenn die Schneidvorrichtung 100 auf der Behälterhülle 190 montiert ist, der Abstand h zwischen den Spitzen der Zähne 130 und der darunterliegenden Behälterhülle 190 so variiert, dass die Spitze des vordersten Zahns 130 in Rotationsrichtung R zur Behälterhülle 190 den kleinsten Abstand h1 und die Spitze des letzten Zahns 130n den grössten Abstand hn aufweist, wobei die Abstände des ersten Zahn 1301 zum letzten Zahn 130n, im montierten Zustand, zur Behälterhülle 190 nacheinanderfolgend zunehmen.Thus, the tips of the teeth 130 are disposed on the lower edge 110 of the cutting element 115 so that when the cutting device 100 is mounted on the container shell 190 , the distance h between the tips of the teeth 130 and the underlying container shell 190 varies such that the tip of the front tooth 130 in the direction of rotation R to the container shell 190 the smallest distance h 1 and the tip of the last tooth 130 n has the greatest distance h n , wherein the distances of the first tooth 130 1 to the last tooth 130 n , in the assembled state, to the container shell 190th increase sequentially.

Des Weiteren sind das Schneidelement 115 und die Verschlusskappe so angeordnet, dass das erstmalige Abschrauben der Verschlusskappe das Schneidelement 115 sowohl in Rotationsrichtung R rotiert, als auch linear in Richtung S zur Behälterhülle 190 bewegt wird. Mit anderen Worten, das Schneidelement 115 bewegt sich schraubenartig in Richtung Behälterhülle 190. Furthermore, the cutting element 115 and the closure cap are arranged so that the first unscrewing of the closure cap rotates the cutting element 115 both in the direction of rotation R , and is moved linearly in the direction S to the container shell 190 . In other words, the cutting element 115 moves helically in the direction of the container casing 190.

Dadurch dass die Zähne 1301-n in montierten Zustand so angeordnet sind, dass die Abstände oder Höhen h1-n zur Behälterhülle 190 entsprechend sukzessive in Rotationsrichtung R abnehmen, kommt der vorderste Zahn 130 als Erster mit der Behälterhülle 190 in Kontakt. Durch die Kraft, die der vorderste Zahn 130 auf die Behälterhülle 190 ausübt, wird diese in Richtung Behälterinhalt gedehnt und deformiert (Pfeil D). Wie in Figur 2A schematisch dargestellt, ist in einer Ausführungsform des Erfindungsgegenstandes die Neigung α der Linie Q so gewählt, dass bei mindestens annähernd maximaler Deformation der Behälterhülle 190 vor deren Performation durch den vordersten Zahn 130 auch mindestens zwei Folgezähne 1302 und 1303 in direkten Kontakt mit der Behälterhülle 190 stehen. Demzufolge wirken bei einer weiteren Abwährtsbewegung S des Schneidelements 115 zur Behälterhülle 190 mindestens drei Zähne 130 mindestens annähernd zeitgleich schneidend auf Behälterhülle 190 ein. Dadurch wird die Last, die zum Aufschneiden der Behälterhülle 190 benötigt wird auf diese mindestens drei Zähne 130 verteilt, was zur Folge hat, dass die Knick- und Stosslast, die auf jeden einzelnen Zahn 130 einwirkt, entsprechend verringert ist (im Vergleich zur Knicklast, der ein einzelner Zahn ausgesetzt ist, wenn jeweils nur ein Zahn schneidend auf die Behälterhülle 190 einwirkt), sodass das Schneidelement 115 bei verhältnismässig geringem Kraftaufwand an mehreren Stellen auf die Behälterhülle 190 schneidend eingewirkt.As a result of the teeth 130 1-n being arranged in the assembled state so that the distances or heights h 1-n to the container casing 190 successively decrease in the direction of rotation R , the foremost tooth 130 first comes into contact with the container casing 190 . Due to the force which the foremost tooth 130 exerts on the container casing 190 , it is stretched and deformed in the direction of the container contents (arrow D ). As in FIG. 2A shown schematically, the inclination α of the line Q is selected so that at least approximately maximum deformation of the container shell 190 before its perforation by the foremost tooth 130 and at least two follower teeth 130 2 and 130 3 in direct contact with the container shell 190 stand. Accordingly, in a further Abwährtsbewegung S of the cutting element 115 to the container shell 190 at least three teeth 130 at least approximately simultaneously cutting on container shell 190 a. As a result, the load required for slicing the container casing 190 is distributed to these at least three teeth 130 , with the result that the buckling and impact load acting on each individual tooth 130 is correspondingly reduced (in comparison to the buckling load, which is exposed to a single tooth, if only one tooth intersecting the container shell 190 acts), so that the cutting element 115 with a relatively small amount of force at several points on the container shell 190 intersecting acted.

Die in Figur 1A, Figur 1B , Figur 2A und Figur 2B schematisch dargestellte Schneidvorrichtung 300 weist zwei Schneidkantenabschnitte 120 auf. Zwei Schneidkantenabschnitte 120 können für eine Schneidvorrichtung 100 geeignet sein, die einen nominalen Durchmesser von, zum Beispiel 10 mm oder weniger, aufweist.In the FIG. 1A, FIG. 1B . FIG. 2A and FIG. 2B schematically illustrated cutting device 300 has two cutting edge portions 120 . Two cutting edge portions 120 may be suitable for a cutting device 100 having a nominal diameter of, for example, 10 mm or less.

In einer Ausführungsform der Erfindung weist die virtuelle Linie Q auf der die Zähne 130 liegen zur darunterliegenden Behälterhülle 190 mindestens zwei Neigungen auf. Mit Referenz zur Figur 3A und Figur 3B , weist die virtuelle Linie Q zwei Neigungen α und β auf, wobei α<β, sodass die Neigung eines ersten Satzes 131 von Zähnen 130 weniger steil ist als die Neigung eines zweiten Satzes 132 von Zähnen 130, die dem ersten Satz 131 in Rotationsrichtung R nachgelagert ist. Die Zähne 130 des zweiten Satzes 132 dienen dazu allfällig unvollständig durchgetrennte Fasern der Behälterhülle 190 ganz durchzuschneiden.In one embodiment of the invention, the virtual line Q on which the teeth 130 lie to the underlying container shell 190 at least two inclinations. With reference to Figure 3A and Figure 3B , the virtual line Q has two inclinations α and β, where α <β, so that the inclination of a first set 131 of teeth 130 is less steep than the inclination of a second set 132 of teeth 130 facing the first set 131 in the direction of rotation R is downstream. The teeth 130 of the second set 132 serve to completely cut through any incompletely severed fibers of the container casing 190 .

Die Stellen der Behälterhülle 190, die durch den ersten Satz 131 allenfalls nur unvollständig durchschnitten werden, werden schliesslich durch den zweiten Satz 132 vollständig durchschnitten. Da der zweite Satz 132 Stellen durchschneidet, die vom ersten Satz 131 bereits angeschnitten wurden, ist trotz des steileren Winkels β des zweiten Satzes 132 gegenüber des flacheren Winkels α des ersten Satzes 131 das anzuwendende Drehmoment nicht erhöht.The locations of the container casing 190, which are only incompletely intersected by the first set 131 , are finally completely cut through by the second set 132 . Since the second set cuts 132 places already cut by the first set 131 , despite the steeper angle β of the second set 132 than the shallower angle α of the first set 131, the torque to be applied is not increased.

Mit Referenz zu Figur 4 , kann ein Schneidelement 415 drei Schneidkantenabschnitte 120 aufweisen. Eine Anzahl von drei Schneidkantenabschnitten 120 kann für eine Schneidvorrichtung 100 geeignet sein, die einen nominalen Durchmesser von, zum Beispiel zwischen mehr als 20 mm aufweist. Es soll hierbei angemerkt werden, dass in einer Ausführungsform der Erfindung das Schneidelement 115 nur einen Schneidkantenabscnnitt 120 aufweist, beispielsweise wenn das Schneidelement 115 einen nominalen Durchmesser von weniger als zum Beispiel 10 mm aufweist, ohne dass dabei an Abgeglichenheit der auf die Schneidvorrichtung 100 einwirkenden Kräfte einzubüssen.With reference to FIG. 4 , a cutting element 415 may have three cutting edge portions 120 . A number of three cutting edge portions 120 may be suitable for a cutting device 100 having a nominal diameter of, for example, greater than 20 mm. It should be noted here that in one embodiment of the invention, the cutting element 115 has only one cutting edge section 120 , for example when the cutting element 115 has a nominal diameter of less than, for example, 10 mm, without compromising the balance of the forces acting on the cutting device 100 sacrificing.

In einer Ausführungsform der Erfindung sind die Ganghöhe und der Steigungswinkel des Schraubenelements 105 mit dem Schneidelement 115 so ausgestaltet, dass durch die vollständige Abschraubung der Verschlusskappe von dem Schraubenelement 105 das Schneidelement 115 in die Behälterhülle 190 so einwirkt, dass die dem Schneidelement 115 unterliegende Behälterhülle 190 (hierin: Öffnungsstück) nur unvollständig eingeschnitten und demzufolge nicht unvollständig abgetrennt wird, um ein Abfallen des ausgeschnittenen Öffnungsstücks in den Behälterhülleninhalt zu verhindern. Beispielsweise ist das Schneidelement 115 so ausgestaltet, dass bei erstmaligem Abschrauben der Verschlusskappe, das Schneideelement 115 einen kreisförmigen Einschneidepfad durchläuft, wobei die Umlauflänge dieses Einschneidepfads beispielsweise mindestens 50% bis 70% und maximal 70 bis 99% des mindestens annähernd kreisförmigen Umfangs des Schneidelements 115 entspricht.In one embodiment of the invention, the pitch and the pitch angle of the screw member 105 with the cutting element 115 are designed so that the complete unscrewing the cap of the screw member 105, the cutting element 115 acts in the container shell 190 so that the Cutting element 115 underlying container shell 190 (herein: opening piece) is incomplete incised and therefore not incompletely separated, to prevent falling of the cut-out opening piece in the container envelope contents. For example, the cutting element 115 is configured so that upon first unscrewing the cap, the cutting element 115 passes through a circular incision path, the circumferential length of this Einschneidepfads example, at least 50% to 70% and at most 70 to 99% of the at least approximately circular circumference of the cutting element 115 corresponds ,

Um die gewünschte Umlauflänge zu erhalten, variiert in entsprechenden Ausführungsformen der Erfindung jeweils die Anzahl und/oder die Bogenlänge der Schneidkantenabschnitte 120 mit dem Durchmesser der Schneidvorrichtung 100, d.h. wie anhand der nachfolgenden Beispielen erläutert, erfordert ein grösserer/kleinerer nominaler Durchmesser (und Radius) der Schneidvorrichtung 100, jeweils die Anordnung einer entsprechend grösseren/kleineren Anzahl von Schneidkantenabschnitten 120 und/oder eine längere/kürzere Bogenlänge der Schneidkantenabschnitten 120, wobei zwei aufeinanderfolgende Schneidkantenabschnitte 120 von einer Aussparung 140 beabstandet nebeneinander angeordnet sind. Demzufolge weist die Schneidvorrichtung 100 mit einer Mehrzahl von Schneidkantenabschnitten 120 mindestens eine Aussparung 140 auf.In order to obtain the desired circumferential length, of the invention varies in the respective embodiments are the number and / or the arc length of the cutting edge sections 120 with the diameter of the cutting device 100, that is, as explained with reference to the following examples, requires a larger / smaller nominal diameter (and radius) the cutting device 100, respectively the arrangement of a correspondingly larger / smaller number of cutting edge portions 120 and / or a longer / shorter arc length of the cutting edge portions 120, wherein two successive cutting edge portions 120 spaced from a recess 140 are arranged side by side. As a result, the cutting device 100 with a plurality of cutting edge sections 120 has at least one recess 140 .

Bei der Anordnung einer Mehrzahl von Schneidkantenabschnitten 120 kommen während des Schneidvorgangs eine Vielzahl von Schneidkantenabschnitten 120 gleichzeitig in Kontakt mit der Behälterhülle 190, sodass ein Öffnungsstück der Behälterhülle 190 an mehreren Stellen gleichzeitig eingeschnitten/abgeschert wird.In the arrangement of a plurality of cutting edge portions 120 during the cutting operation a plurality of cutting edge portions 120 come simultaneously in contact with the container shell 190, so that an opening piece of the container shell 190 is cut in several places at the same time / sheared.

Die in Proportion mit dem Durchmesser der Schneidvorrichtung 100 umfassende Anzahl von Schneidkantenabschnitten 120 führt dazu, dass während der schraubenartigen Schneidbewegung eine möglichst abgeglichene Kräftebelastung auf das Schneidelement 115 erreicht wird.The number of cutting edge portions 120 , which is in proportion to the diameter of the cutting device 100 , results in the most balanced possible load on the cutting element 115 during the helical cutting movement.

In einer Ausführungsform der Erfindung weist die Schneidvorrichtung 100 einen Ausschnitt 180 entlang ihres Umfangs auf. Dieser Ausschnitt 180 beträgt in einer Ausführungsform beispielsweise maximal die Hälfte des Gesamtumfangs der Schneidvorrichtung 100. Die mit dem Ausschnitt 180 ausgestaltete Schneidvorrichtung 100 ermöglicht ungehinderten Fluss des Behälterinhalts/Produkts aus der Öffnung des Ausgiessers (nicht dargestellt) durch den Ausschnitt 180. In one embodiment of the invention, the cutting device 100 has a cutout 180 along its circumference. For example, in one embodiment, this cutout 180 is at most half the total circumference of the cutting device 100 . The cutting device 100 configured with the cutout 180 enables unimpeded flow of the container contents / product out of the opening of the pourer (not shown) through the cutout 180.

Unabhängig von der Anzahl der Schneidkantenabschnitten 120 wird durch die während des Schneidvorgangs von der Aussenseite 191 zur Innenseite 192 einwirkenden Kräfte der Schneidvorrichtung 100 auf die Behälterhülle 190, das Öffnungsstück in Richtung Innenseite 192 der Behälterhülle 190 umgefaltet. FIGUR 5 zeigt ein Konturdiagramm, das schematisch die Umfaltung der Öffnungsstücks zur Innenseite 192 der Behälterhülle 190 darstellt.Irrespective of the number of cutting edge portions 120 , the forces acting on the container casing 190 during the cutting process from the outside 191 to the inside 192 of the cutting device 100 , the opening piece towards the inside 192 of the container casing 190 is folded over. FIG. 5 shows a contour diagram, which schematically illustrates the refolding of the opening piece to the inside 192 of the container shell 190 .

Wie eingangs erwähnt, können sich Fasern am Schneidkantenabschnitt 120 ansammeln, so dass eine oder mehrere der zu durchschneidendenden laminierten Folien oder Membranen der Behälterhülle 190 durch diese Fasern vom Schneidkantenabschnitt 120 geschützt sind und während der Rotation nur gedehnt oder unvollständig durchgetrennt werden. Um solche allenfalls unvollständig eingeschnittene Folien oder Membranen vollständig zu einzuschneiden, ist die Aussparung 140 hakenförmig mit einer angeschrägten Aussparungsplanke 142 mit Abreisskante 144 ausgestaltet. Dadurch haken sich durch die schraubenartige Rotationsbewegung des Schneidelements 115 solche Fasern in die Abreisskante 144 ein, woraufhin durch die fortgesetzte Rotationsbewegung diese Fasern durchgeschert und das entsprechende Behältermaterial vollständig von der Behälterhülle 190 abgetrennt wird.As mentioned earlier, fibers may accumulate on the cutting edge portion 120 such that one or more of the laminated films or membranes of the container wrap 190 to be cut are protected by the cutting edge portion 120 from these fibers and are only stretched or incompletely severed during rotation. In order to completely cut in such incomplete incised films or membranes, the recess 140 is hook-shaped with a tapered recess plank 142 with tear-off 144 designed. As a result of the helical rotational movement of the cutting element 115, such fibers hook into the tear-off edge 144 whereupon the continuous rotation movement shears these fibers through and the corresponding container material is completely separated from the container casing 190 .

Das Drehmoment M, das bei dieser Schneidvorrichtung 100 angewendet werden muss, um die Behälterhülle 190 einzuschneiden beträgt, beispielsweise, etwa 60-70% des Drehmoments des bei Stand der Technik bekannten Schneidvorrichtungen anzuwendenden Drehmoments.The torque M that must be applied to this cutter 100 to cut the container wrap 190 is, for example, about 60-70% of the torque of the prior art known cutters.

Die Schneidvorrichtung 100 ist geeignet eine Behälterhülle 190 aufzuschneiden, die Materialen aus einem der folgenden Gruppe umfasst: Kunststoff, Papier, Leichtmetall, Karton und mehrlagigen laminierten Folien aus mindesten zwei der vorgenannten Materialien.The cutting device 100 is adapted to cut open a container casing 190 comprising materials from one of the following group: plastic, paper, light metal, cardboard and multilayer laminated films of at least two of the aforementioned materials.

In einer Ausführungsform der Erfindung besteht die Kunststofffolie aus mindestens einem der folgenden Materialien: Polypropylen, Polyethylen und Polyamin.In one embodiment of the invention, the plastic film consists of at least one of the following materials: polypropylene, polyethylene and polyamine.

Das Leichtmetall kann aus Aluminium bestehen, das beispielsweise eine Dicke von 8 µm aufweist. Des Weiteren umfasst eine auf die Behälterhülle 190 aufbringbare Verschlussvorrichtung eine rotierbare Schneidvorrichtung 100 gemäss einer Ausführungsform der Erfindung.The light metal may be made of aluminum, for example, has a thickness of 8 microns. Furthermore, a closure device which can be applied to the container casing 190 comprises a rotatable cutting device 100 according to an embodiment of the invention.

Claims (8)

  1. Container covering made from plastic film having a rotating closure which has a rotatable cylindrical cutting device (100, 300), wherein said cutting device has a lower rim (110) on which at least one cutting edge section (120) is located, and that this at least one cutting edge section (120) has at least three teeth (130) which lie on a line which extends at an incline in relation to the bag, and that the frontmost tooth in the direction of rotation first comes into contact with the plastic film in the course of the cutting operation, characterized in that the inclination of the line on which the teeth (130) of the at least one cutting edge section lie is chosen such that upon occurrence of at least approximately maximum deformation of the plastic film, prior to the perforation thereof by the frontmost tooth, at least two subsequent teeth of the same cutting edge section (120) are in direct contact with the plastic film.
  2. Article according to Patent Claim 1, characterized in that the lower rim (110) has a plurality of cutting edge sections (120), wherein each cutting edge section (120) is provided with a multiplicity of teeth (130) and is located at a distance from a recess (140).
  3. Article according to Patent Claim 2, characterized in that the inclination of the line on which the teeth (130) of each cutting edge section lie is chosen such that upon occurrence of at least approximately maximum deformation of the plastic film, prior to the perforation thereof by the frontmost tooth, at least half the number of subsequent teeth of the same cutting edge section (120) are in direct contact with the plastic film.
  4. Article according to one of Patent Claims 1 to 3, characterized in that upon occurrence of at least approximately maximum deformation of the plastic film, prior to the perforation thereof by the frontmost tooth, the majority of the number of subsequent teeth of the same cutting edge section (120) are in direct contact with the plastic film.
  5. Article according to one of Patent Claims 1 to 4, characterized in that the recess (140) is configured with a recess strip (142) tapered like a hook with a tear-off edge (144).
  6. Article according to one of Patent Claims 1 to 5, characterized in that the cutting device (100) has along its circumference a cutout (180) which measures at most half of the entire circumferential line of the cutting device (100).
  7. Article according to one of Patent Claims 1 to 6, characterized in that the container covering consists of one of the following materials: polypropylene, polyethylene and polyamide.
  8. Article according to one of Patent Claims 1 to 7, characterized in that the teeth (130) in their assembled state form two angles with the container covering (190), wherein a first set of teeth (131) forms a flatter angle (α) with the container covering than the angle (β) of a second set of teeth (132) which is located downstream in the direction of rotation (R).
EP12725757.4A 2011-08-01 2012-06-04 Container cover with rotating closure Active EP2739539B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011080209A DE102011080209A1 (en) 2011-08-01 2011-08-01 Cutting device for container cases
PCT/EP2012/060503 WO2013017316A1 (en) 2011-08-01 2012-06-04 Cutting device for container covers

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EP2739539A1 EP2739539A1 (en) 2014-06-11
EP2739539B1 true EP2739539B1 (en) 2016-02-24

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EP12725757.4A Active EP2739539B1 (en) 2011-08-01 2012-06-04 Container cover with rotating closure

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US (1) US9004305B2 (en)
EP (1) EP2739539B1 (en)
CN (1) CN103717501B (en)
BR (1) BR112014002162A2 (en)
DE (1) DE102011080209A1 (en)
RU (1) RU2619650C1 (en)
WO (1) WO2013017316A1 (en)

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DE102012212769A1 (en) * 2012-07-20 2014-01-23 Robert Bosch Gmbh Reclosable spout for a bag made of elastic film
CH708742A1 (en) * 2013-10-25 2015-04-30 Terxo Ag Self-opening closure for opening and reclosing a package.
US10179677B2 (en) 2015-09-03 2019-01-15 Fres-Co System Usa, Inc. Aseptic package fluid dispensing apparatus and methods of dispensing liquids from flexible packages
US10287081B2 (en) * 2015-09-03 2019-05-14 Fres-Co System Usa, Inc. Aseptic package fluid dispensing apparatus
US10676261B2 (en) 2017-09-07 2020-06-09 Silgan White Cap LLC Closure assembly
BR102017023492A2 (en) * 2017-10-31 2018-06-05 Icmatech Inovações Tecnológicas Ltda Me CUTTING ELEMENT FOR SIMILAR AND OXYGEN BARRIER LAYERS
US10962139B2 (en) * 2018-02-01 2021-03-30 Kohler Co. Handwashing valve structure
USD942798S1 (en) 2018-11-23 2022-02-08 K Fresh Co., Ltd Coconut puncturing device

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US5020690A (en) 1987-06-30 1991-06-04 Toppan Printing Co., Ltd. Pouring plug for liquid container
US5297696A (en) * 1992-04-27 1994-03-29 International Paper Company Pour spout with piercing insert
JP4043575B2 (en) 1997-12-17 2008-02-06 大日本印刷株式会社 Liquid container spout
FR2779418B1 (en) 1998-06-04 2000-07-13 Crown Cork & Seal Tech Corp DEVICE FOR OPENING AND CLOSING A PACKAGE
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RU2337864C2 (en) 2003-03-21 2008-11-10 Берикап Холдинг Гмбх Sealing device for container made of laminated paper or laminated cardboard
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EP2055640B1 (en) * 2007-11-05 2011-02-16 Tetra Laval Holdings & Finance SA Reclosable opening device for packages of pourable food products
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DE102009045124A1 (en) * 2009-09-29 2011-03-31 Robert Bosch Gmbh Closure device made of plastic

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Publication number Publication date
US20140151374A1 (en) 2014-06-05
EP2739539A1 (en) 2014-06-11
CN103717501A (en) 2014-04-09
DE102011080209A1 (en) 2013-02-07
WO2013017316A1 (en) 2013-02-07
CN103717501B (en) 2016-12-21
US9004305B2 (en) 2015-04-14
BR112014002162A2 (en) 2017-02-21
RU2619650C1 (en) 2017-05-17

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