EP2030901B1 - Foldable package having opening aid with variable pitch of perforations - Google Patents

Foldable package having opening aid with variable pitch of perforations Download PDF

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Publication number
EP2030901B1
EP2030901B1 EP20080075733 EP08075733A EP2030901B1 EP 2030901 B1 EP2030901 B1 EP 2030901B1 EP 20080075733 EP20080075733 EP 20080075733 EP 08075733 A EP08075733 A EP 08075733A EP 2030901 B1 EP2030901 B1 EP 2030901B1
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EP
European Patent Office
Prior art keywords
perforation line
orientation
package
perforation
side wall
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EP20080075733
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German (de)
French (fr)
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EP2030901A1 (en
EP2030901B9 (en
Inventor
Friedrich Prinz
Matthias-Uwe Blana
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Smurfit Kappa Deutschland GmbH
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Smurfit Kappa Deutschland GmbH
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    • 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
    • B65D5/54—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material

Definitions

  • the invention relates to a foldable packaging made of corrugated cardboard according to the preamble of claim 1, wherein an opening aid is formed as a perforation line.
  • such covers are connected via a perforation with the hull of the cardboard so that the lid can be opened by tearing the perforation and the contents can be removed from the cardboard.
  • transport or outer packaging for storage and transport of a plurality of packaging such as bottles, cans, cartons, etc.
  • Such containers which are commonly referred to as carton boxes as well as sales assistants, also commonly referred to as shipping cartons, are commonly used in retailing.
  • sales units fulfill both the function of a transport protective overpack and later when placed in the business the function of a promotional presentation of the goods, without a separate presentation would be required.
  • the respective, any carton is even simply cut in such a way that the content for the customer, preferably in self-service stores, only visible.
  • Umverpackungslinen which can be converted with more or less great effort after transport and storage to sales helpers.
  • a tear tape is made up on the inside of the outer carton during manufacture, which is to be torn open before the goods presentation, so that the sales assistant is created.
  • the cartons may also be made from corresponding blanks having one or more parts such that the conversion from the clean packaging to the display sales unit is facilitated.
  • perforations are provided as an opening aid to allow opening of the folding cartons without additional aids such as a pair of scissors or a knife.
  • the preamble of claim 1 forming cardboard packaging comprises a perforation line which extends oval in a side wall and an upper wall. Slot-shaped perforations of the perforation line are aligned with changing angle of attack such that between adjacent perforations during tearing creates an edge with an orientation that coincides with the direction of the fiber structure of the cardboard material. As in US 2 967 010 A should also be achieved with this measure when tearing the perforation relatively clean separation edges regardless of a weakening effect of perforation on the cardboard material.
  • Perforations represent a weakening of the material which reduces the stability of carton packages and shipping cartons, so that unintentional opening of the package during transport, storage or handling may occur.
  • the wall thickness or the material quality for example by better paper types such as Kraftliner, the wall provided with a perforation be increased, resulting in a higher material usage and thus costs and resource consumption. Additional costs beyond the mere shipping box construction is usually hard to bear for a mass-produced product.
  • the document EP 1375 361 A deals with single-walled corrugated cardboard, on the cover papers by cutting, possibly only slightly penetrating into corrugated paper continuous cut lines are designed as tear lines.
  • the cutting lines are transversely, preferably perpendicular to the direction of the corrugated cardboard waves, wherein tear lines are kept relatively short in the wave direction and wavy with a variety of turning points.
  • the invention has for its object to provide a perforation line as an opening aid having corrugated cardboard packaging, the opening aid should be easy and convenient to handle with high Stapelstande- and indentation without the aid of a tool, and compared to a package / carton without opening aid to avoid additional material usage.
  • opening aid is her compared with known perforation high Stapelstauchund Eind Wegwiderstand. Furthermore, the opening aid of the packaging according to the invention is also suitable for being applicable and functional even in the case of two-shaft or more-corrugated cardboard.
  • the opening aid represents a linear material weakening of material gaps and material bridges in the blank of the cardboard, which can be relatively easily destroyed by pushing in, pulling out, tearing and tearing, so as to ensure an easy separation or first opening, for example, a lid member.
  • the material weakening follows an imaginary line defined by the centers of the material bridges as support points.
  • the Perforationslinienverlauf is designed such that the perforation line in the built-up state of the packaging forms a closed polyline, so that the cardboard segment enclosed by the perforation line can be completely separated from the packaging. This is particularly advantageous in mailing boxes, whose front wall, top wall and parts of the side walls are usually separated for the purpose of product presentation and product removability on a shelf.
  • the perforation line extends in an arcuate manner over the side walls of such shipping folding boxes.
  • Particularly advantageous here is a parabolic design of the perforation line.
  • the perforation line formed as a closed polyline is designed as a continuous function which has at least four inflection points over its course. It is advantageous, each two turning points mirror symmetric to a front wall which forms an intermediate wall between side walls and head walls, respectively at the lower end of a side wall and to provide in the head wall.
  • the material bridges or gaps of the opening aid are not tangent to the perforation line, but have a different orientation from the tangential to the perforation. This orientation, which deviates from the tangential, can be described by the angle of attack ⁇ .
  • the angle of attack ⁇ is defined as the acute angle formed by the tangent line of the perforation line and the tangent of the gap between the material in the piercing point (intersection point) of the perforation line and the material gap.
  • the angle of attack ⁇ has a variable size over the course of the perforation line. Its size thus changes from material gap to material gap. This achieves and configures an optimum ratio between the greatest possible transport stability and the smallest possible tearing force necessary to open the perforation line.
  • the angle of attack ⁇ for example, in the area of top bottles very pointed, so be formed sharper than in other areas, since in this area the package has little load to bear, but a comparatively easy and clean tearing of the perforation is advantageous while the angle of attack ⁇ in the range of side walls over the longest possible path of the perforation line parallel to the shaft alignment of a corrugated cardboard having the perforation and thus realizes the highest possible Stapelstauchwiderstand.
  • the angle of attack ⁇ is selected such that the force vector acting on the material gap when the opening aid is torn forms an angle ⁇ between material gap and force vector of 75 ° to 105 °, ie the force vector acting on the material gaps between itself and the material gap forms an angle of 75 ° to 105 °.
  • the opening aid is particularly suitable for one-, two- and more multi-shaft boards.
  • a corrugated cardboard with cover paper or corrugated paper should preferably have good printability and foldability and have suitable stability. Furthermore, the paper should be suitable for processing in automated manufacturing processes such as erecting and filling equipment.
  • the foldable paper can be a variety of papers on which a perforation can be formed.
  • Fig. 1 shows a blank For a product outer packaging made of cardboard. Such a cardboard is also referred to as a shelf-ready box.
  • the blank 1 has a first side wall 6a, a second side wall 6b and a front wall 7a and a rear wall 7b.
  • the blank 1 is formed into a tube, that is to say into an annularly closed body, which initially leaves open end faces.
  • head bottles 8a, 8b, 9a, 9b are pivotally arranged, which cover the head opening, so the one open end of the tube at least partially in the assembled state of the product outer packaging.
  • the blank 1 has an opening aid formed by a perforation line 2.
  • the perforation line 2 extends mirror-symmetrically with respect to the front wall 7a and the head nose 9a from the front wall 7a via the side walls 6a and 6b as well as via the head lugs 8a and 8b.
  • the perforation line 2 forms in the assembled state of the blank 1 from a closed polyline, which includes areas of the front wall 7a, the side walls 6a, 6b and the head lugs 8a and 8b.
  • the front wall 7a has at its bottom end on a handle opening 5, through which a user can intervene to rupture of the limited area by the perforation line 2.
  • the course of the perforation line 2 has in each case a first inflection point 10a or 10b in the lower region of the side wall 6a or 6b.
  • a second inflection point 11a or 11b is arranged on the top flap 8a or 8b. Between the two turning points 10a, 11a and 11a, 11b, the perforation line 2 extends with sections 2a and 2b in approximately parabolic.
  • Fig. 2 shows a detailed view of the perforation line 2 and its course over the front wall, a side wall and a top flap.
  • the perforation line 2 consists of material gaps 3 and material bridges 4, wherein the material gap 4 is formed like a line in the manner of a slit.
  • the dash-dot lines shown and labeled W indicate the shaft alignment of a corrugated board from which the blank 1 is formed. The dash-dot lines W thus run parallel to a wave trough or wave crest of the corrugated board.
  • strip-shaped material gaps 3 extend in the lower region of the perforation line 2 essentially parallel to the shaft alignment W, wherein they have an orientation deviating from the parallel in the upper region.
  • Fig. 3 shows a detailed view of the perforation line 2 with voltage applied to the material gaps 3 force vectors each acting on the gaps 3 when tearing the opening aid.
  • the angle of attack ⁇ is selected such that the force vector acting on the line-shaped material gap 3 when the opening aid is torn forms an angle ⁇ between the material gap 3 and the force vector of 75 to 105 °, ie the force vectors are at the line-shaped material gaps 3 at such angles ⁇ .
  • the course of the angle of attack ⁇ between the first inflection point 10 and the second inflection point 11 is well based on Fig. 4 to recognize.
  • the material gaps 3 are initially directed parallel to the wave orientation W, while they tilt in the upper region to the perforation line 2, the latter extending in an increasingly curved area in a central region.
  • the course of the perforation line 2 and the orientations of the material gaps 3 are such that the angle of attack ⁇ changes from material gap to material gap.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Cartons (AREA)

Description

Die Erfindung betrifft eine faltbare Verpackung aus Wellpappe nach dem Oberbegriff von Anspruch 1, wobei eine Öffnungshilfe als Perforationslinie ausgebildet ist.The invention relates to a foldable packaging made of corrugated cardboard according to the preamble of claim 1, wherein an opening aid is formed as a perforation line.

Stand der TechnikState of the art

Für die Verpackungen von einer Vielzahl von flüssigen, gelartigen, festen und/oder schüttfähigen Füllgütern wie beispielsweise aus der Gruppe der Textilwaschmittel, Geschirrspülmittel, Pharmazeutika, Körperpflegemittel, Agrarhilfsmittel, Baustoffe, Farbstoffe, Klebstoffe oder Lebensmittel, ist es heute üblich, Kartonverpackungen zu verwenden.For the packaging of a variety of liquid, gel-like, solid and / or free-flowing products such as from the group of laundry detergents, dishwashing detergents, pharmaceuticals, personal care products, agricultural auxiliaries, building materials, dyes, adhesives or food, it is common today to use cardboard packaging.

Aus dem Stand der Technik sind eine Vielzahl von Kartonagen zum Zwecke der Aufbewahrung und des Transports von rieselfähigen Gütern bekannt, darunter auch solche, die einen mittels eines aus Pappe ausgebildeten Verschlusses verschließbaren Deckel umfassen.From the prior art, a variety of cardboard for the purpose of storage and transport of free-flowing goods are known, including those which comprise a closable by means of a cardboard closure formed lid.

Üblicherweise sind derartige Deckel über eine Perforation mit dem Rumpf der Kartonage verbunden, damit der Deckel durch Aufreißen der Perforation geöffnet und der Inhalt aus der Kartonage entnommen werden kann.Typically, such covers are connected via a perforation with the hull of the cardboard so that the lid can be opened by tearing the perforation and the contents can be removed from the cardboard.

Auch sind Transport- bzw. Umverpackungen zur Lagerung und zum Transport von einer Mehrzahl von Packmitteln wie Flaschen, Dosen, Kartons usw. bekannt. Solche sowohl als Umkarton als auch als Verkaufshelfer zu verwendenden Behälter, auch häufig allgemein als Versandfaltschachtel bezeichnet, werden im Einzelhandel häufig eingesetzt. Der Vorteil besteht darin, dass die Verkaufseinheiten sowohl die Funktion einer beim Transport schützenden Umverpackung als auch später beim Platzieren im Geschäft die Funktion einer verkaufsfördernden Darstellung der Ware erfüllen, ohne dass eine gesonderte Präsentation erforderlich wäre. In vielen Fällen wird der jeweilige, beliebige Umkarton sogar einfach dergestalt aufgeschnitten, dass der Inhalt für den Kunden, vorzugsweise in Selbstbedienungsläden, lediglich sichtbar wird.Also, transport or outer packaging for storage and transport of a plurality of packaging such as bottles, cans, cartons, etc. are known. Such containers, which are commonly referred to as carton boxes as well as sales assistants, also commonly referred to as shipping cartons, are commonly used in retailing. The advantage is that the sales units fulfill both the function of a transport protective overpack and later when placed in the business the function of a promotional presentation of the goods, without a separate presentation would be required. In many cases, the respective, any carton is even simply cut in such a way that the content for the customer, preferably in self-service stores, only visible.

Das Interesse des Einzelhandels an der Verwendung von Verpackungen als Warenpräsentation wird von der Verpackungsindustrie mit entsprechenden Entwicklungen unterstützt. Es gibt daher eine Vielzahl von Umverpackungsvarianten, die sich mit mehr oder weniger großem Aufwand nach dem Transport und der Lagerung zu Verkaufshelfern umwandeln lassen. Beispielsweise wird auf der Innenseite des Umkartons beim Herstellen ein Aufreißband konfektioniert, das vor der Warenpräsentation aufzureißen ist, so dass der Verkaufshelfer entsteht. Die Kartons können auch aus entsprechenden Zuschnitten mit einem oder mehreren Teilen derart hergestellt werden, dass das Umwandeln von der reinen Verpackung zur Display-Verkaufseinheit erleichtert wird.The interest of the retail trade in the use of packaging as a product presentation is supported by the packaging industry with corresponding developments. There are therefore a variety of Umverpackungsvarianten, which can be converted with more or less great effort after transport and storage to sales helpers. For example, a tear tape is made up on the inside of the outer carton during manufacture, which is to be torn open before the goods presentation, so that the sales assistant is created. The cartons may also be made from corresponding blanks having one or more parts such that the conversion from the clean packaging to the display sales unit is facilitated.

Insbesondere werden Perforationen als Öffnungshilfe vorgesehen, um ein Öffnen der Versandfaltschachteln ohne zusätzliche Hilfsmittel wie etwa eine Schere oder ein Messer zu erlauben.In particular, perforations are provided as an opening aid to allow opening of the folding cartons without additional aids such as a pair of scissors or a knife.

Zum Beispiel ist gemäß US 2 967 010 eine Verpackung mit einer ein Abreißteil ausbildenden, S-förmige Materiallücken in übereinstimmender Ausrichtung aufweisenden Perforationslinie bekannt, die in einer Vorderwand sowie daran angelenkten Seitenwänden verläuft. Nach völligem Entfernen des Abreißteils entsteht eine so genannte Display-Verkaufseinheit, die einen Warenblock zwar noch zusammenhält, die Stückentnahme und die Preisauszeichnung aber ohne weiteres ermöglicht. Um nach dem Aufreißen eine möglichst gleichmäßig saubere Abrisskante zu erhalten, ist zwischen benachbarten S-förmigen Materiallücken jeweils eine Materialbrücke ausgebildet, wobei sich die Materialbrücken sämtlich parallel mit einer Faserrichtung des Kartonmaterials erstrecken. Eine aus US 3 620 438 A bekannte, den Oberbegriff von Anspruch 1 bildende Kartonverpackung umfasst eine Perforationslinie, die sich in einer Seitenwand und einer oberen Wand ovalförmig erstreckt. Schlitzförmige Perforationen der Perforationslinie sind mit sich änderndem Anstellwinkel derart ausgerichtet, dass zwischen benachbarten Perforationen beim Aufreißen ein Rand mit einer Ausrichtung entsteht, die mit der Richtung der Faserstruktur des Kartonmaterials übereinstimmt. Wie bei US 2 967 010 A sollen auch mit dieser Maßnahme beim Aufreißen der Perforationslinie relativ saubere Abrisskanten ungeachtet einer Schwächungswirkung von Perforationslinien auf das Kartonmaterial erreicht sein.For example, according to US 2,967,010 a package having a Abreißteil forming, S-shaped material gap known in a matching alignment perforation known in a front wall and hinged thereto side walls. After complete removal of the tear-off creates a so-called display sales unit that still holds together a block of goods, the piece removal and the pricing but readily possible. In order to obtain as evenly as possible a clean tear-off edge after tearing, a material bridge is formed in each case between adjacent S-shaped material gaps, with the material bridges all extending parallel to a fiber direction of the cardboard material. One out US Pat. No. 3,620,438 Known, the preamble of claim 1 forming cardboard packaging comprises a perforation line which extends oval in a side wall and an upper wall. Slot-shaped perforations of the perforation line are aligned with changing angle of attack such that between adjacent perforations during tearing creates an edge with an orientation that coincides with the direction of the fiber structure of the cardboard material. As in US 2 967 010 A should also be achieved with this measure when tearing the perforation relatively clean separation edges regardless of a weakening effect of perforation on the cardboard material.

Perforationen stellen eine Materialschwächung dar, die die Stabilität von Kartonverpackungen und Versandfaltschachteln herabsetzt, so dass es zu einem unbeabsichtigten Öffnen der Verpackung während des Transports, der Lagerung oder der Handhabung kommen kann. Um dies zu verhindern, wird zumeist die Wandstärke oder die Materialqualität, beispielsweise durch bessere Papiersorten wie Kraftliner, der mit einer Perforation versehenen Wand erhöht werden, was zu einem höheren Materialeinsatz und somit Kosten und Ressourcenverbrauch führt. Zusätzlicher Kostenaufwand über die reine Versandschachtel-Konstruktion hinaus ist für ein Massenprodukt in der Regel kaum zu tragen.Perforations represent a weakening of the material which reduces the stability of carton packages and shipping cartons, so that unintentional opening of the package during transport, storage or handling may occur. To prevent this, usually the wall thickness or the material quality, for example by better paper types such as Kraftliner, the wall provided with a perforation be increased, resulting in a higher material usage and thus costs and resource consumption. Additional costs beyond the mere shipping box construction is usually hard to bear for a mass-produced product.

Das Dokument EP 1375 361 A befasst sich mit einwelliger Wellpappe, an der Deckpapiere durchschneidende, gegebenenfalls nur geringfügig in Wellenpapier eindringende ununterbrochene Schnittlinien als Aufreißlinien ausgebildet sind. Um die Wellpappe möglichst wenig zu schwächen, werden die Schnittlinien quer, möglichst senkrecht zur Richtung der Wellen der Wellpappe ausgeführt, wobei Aufreißlinien in Wellenrichtung relativ kurz gehalten werden und mit einer Vielzahl von Wendepunkten wellenartig verlaufen.The document EP 1375 361 A deals with single-walled corrugated cardboard, on the cover papers by cutting, possibly only slightly penetrating into corrugated paper continuous cut lines are designed as tear lines. In order to weaken the corrugated cardboard as little as possible, the cutting lines are transversely, preferably perpendicular to the direction of the corrugated cardboard waves, wherein tear lines are kept relatively short in the wave direction and wavy with a variety of turning points.

Aufgabe der ErfindungObject of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine eine Perforationslinie als Öffnungshilfe aufweisende Verpackung aus Wellpappe zu schaffen, wobei die Öffnungshilfe bei hohem Stapelstande- und Eindrückwiderstand leicht und konvenient ohne Zuhilfenahme eines Werkzeugs zu handhaben sein soll, und im Vergleich zu einer Verpackung/Faltschachtel ohne Öffnungshilfe zusätzlichen Materialeinsatz zu vermeiden.The invention has for its object to provide a perforation line as an opening aid having corrugated cardboard packaging, the opening aid should be easy and convenient to handle with high Stapelstande- and indentation without the aid of a tool, and compared to a package / carton without opening aid to avoid additional material usage.

Lösung der AufgabeSolution of the task

Die Aufgabe wird in Verbindung mit den oberbegrifilichen Merkmalen durch die Merkmale nach dem kennzeichnenden Teil des Anspruchs 1 gelöst.The object is achieved in conjunction with the oberbegrifilichen features by the features of the characterizing part of claim 1.

Vorteile der ErfindungAdvantages of the invention

Vorteil der an der erfindungsgemäßen Faltverpackung angeordneten und ausgebildeten Öffnungshilfe ist ihr verglichen mit bekannten Perforationslinien hoher Stapelstauchund Eindrückwiderstand. Ferner ist die Öffnungshilfe der erfindungsgemäßen Verpackung dazu.geeignet, auch bei zwei- oder darüber hinaus mehrwelligen Wellpappen anwendbar und funktionsfähig zu sein.Advantage of arranged and formed on the folding package according to the invention opening aid is her compared with known perforation high Stapelstauchund Eindrückwiderstand. Furthermore, the opening aid of the packaging according to the invention is also suitable for being applicable and functional even in the case of two-shaft or more-corrugated cardboard.

Öffnungshilfeopening aid

Die Öffnungshilfe stellt eine linienförmige Materialschwächung aus Materiallücken und Materialbrücken im Zuschnitt der Kartonage dar, die sich durch Eindrücken, Herausziehen, Auf- und Abreißen verhältnismäßig leicht zerstören lässt, um so nachfolgend ein müheloses Abtrennen oder erstmaliges Öffnen beispielsweise eines Deckelelements zu gewährleisten.The opening aid represents a linear material weakening of material gaps and material bridges in the blank of the cardboard, which can be relatively easily destroyed by pushing in, pulling out, tearing and tearing, so as to ensure an easy separation or first opening, for example, a lid member.

Die Materialschwächung folgt einer gedachten Linie, die durch die Mittelpunkte der Materialbrücken als Stützpunkte definiert ist.The material weakening follows an imaginary line defined by the centers of the material bridges as support points.

PerforationslinienverlaufPerforationslinienverlauf

Der Perforationslinienverlauf ist derart gestaltet, dass die Perforationslinie im aufgebauten Zustand der Verpackung einen geschlossenen Linienzug ausbildet, so dass das von der Perforationslinie umschlossene Kartonsegment vollständig von der Verpackung abgetrennt werden kann. Dies ist insbesondere bei Versandfaltschachteln vorteilhaft, deren Vorderwand, Kopfwand sowie Teile der Seitenwände zum Zwecke der Produktpräsentation und Produktentnehmbarkeit in einem Regal üblicherweise abgetrennt werden.The Perforationslinienverlauf is designed such that the perforation line in the built-up state of the packaging forms a closed polyline, so that the cardboard segment enclosed by the perforation line can be completely separated from the packaging. This is particularly advantageous in mailing boxes, whose front wall, top wall and parts of the side walls are usually separated for the purpose of product presentation and product removability on a shelf.

Um einen hohen Stapelstauchwiderstand der Kartonverpackung zu realisieren, hat es sich als vorteilhaft erwiesen, dass die Perforationslinie bogenförmig über die Seitenwände derartiger Versandfaltschachteln verläuft. Besonders vorteilhaft ist hierbei eine parabelförmige Ausgestaltung der Perforationslinie.In order to realize a high stacking resistance of the cardboard packaging, it has proven to be advantageous that the perforation line extends in an arcuate manner over the side walls of such shipping folding boxes. Particularly advantageous here is a parabolic design of the perforation line.

Besonders bevorzugt wird die als geschlossener Linienzug ausgeformte Perforationslinie als stetige Funktion ausgestaltet, die über ihren Verlauf wenigstens vier Wendepunkte aufweist. Vorteilhaft ist es, jeweils zwei Wendepunkte spiegetsymmetrisch zu einer Vorderwand, die eine Zwischenwand zwischen Seitenwänden und Kopfwänden bildet, jeweils am unteren Ende einer Seitenwand und in der Kopfwandung vorzusehen.Particularly preferably, the perforation line formed as a closed polyline is designed as a continuous function which has at least four inflection points over its course. It is advantageous, each two turning points mirror symmetric to a front wall which forms an intermediate wall between side walls and head walls, respectively at the lower end of a side wall and to provide in the head wall.

In einer weiteren, bevorzugten Ausführung der Erfindung sind, ausgehend von einem ersten Wendepunkt, mindestens 50% des Perforationslinienwegs zu einem zweiten Wendepunkt mit zur Wellenausrichtung der Wellpappe im wesentlichen parallel verlaufenden Materiallücken ausgebildet. Hierdurch lässt sich ein höherer Stapelstauchwiderstand erzielen als bei Materiallücken, die über den Perforationsverlauf eine von der Parallelen zur Wellenausrichtung abweichende Orientierung aufweisen.In a further preferred embodiment of the invention, starting from a first inflection point, at least 50% of the Perforationslinienwegs formed to a second inflection point with the shaft alignment of the corrugated cardboard substantially parallel material gaps. As a result, a higher stacking resistance can be achieved than in the case of material gaps which, via the perforation profile, have an orientation deviating from the parallel to the shaft alignment.

Die Materialbrücken bzw. -lücken der Öffnungshilfe verlaufen nicht tangential zur Perforationslinie, sondern weisen eine von der Tangentialen zur Perforationslinie abweichende Ausrichtung aus. Diese von der Tangentialen abweichende Ausrichtung kann durch den Anstellwinkel α beschrieben werden.The material bridges or gaps of the opening aid are not tangent to the perforation line, but have a different orientation from the tangential to the perforation. This orientation, which deviates from the tangential, can be described by the angle of attack α.

Anstellwinkelangle of attack

Der Anstellwinkel α ist definiert als der spitze Winkel, der durch die Tangente des Perforationslinienverlaufs und die Tangente des Materiallückenverlaufs im Durchstoßungspunkt (Kreuzungspunkt) von Perforationslinie und Materiallücke gebildet ist.The angle of attack α is defined as the acute angle formed by the tangent line of the perforation line and the tangent of the gap between the material in the piercing point (intersection point) of the perforation line and the material gap.

Der Anstellwinkel α weist über den Verlauf der Perforationslinie eine veränderliche Größe auf. Seine Größe ändert sich also von Materiallücke zu Materiallücke. Hierdurch wird ein optimales Verhältnis zwischen einer möglichst großen Transportstabilität und einer möglichst geringen, zum Öffnen der Perforationslinie notwendigen Aufreißkraft erreicht und konfigurierbar. So kann der Anstellwinkel α beispielsweise im Bereich von Kopflaschen sehr spitz, also spitzer als in anderen Bereichen ausgebildet sein, da in diesem Bereich die Verpackung kaum Last zu tragen hat, jedoch ein vergleichsweise leichtes und sauberes Aufreißen der Perforationslinie vorteilhaft ist, während der Anstellwinkel α im Bereich von Seitenwandungen über einen möglichst langen Weg der Perforationslinie parallel zur Wellenausrichtung einer die Perforation aufweisenden Wellpappe verläuft und somit einen möglichst hohen Stapelstauchwiderstand realisiert.The angle of attack α has a variable size over the course of the perforation line. Its size thus changes from material gap to material gap. This achieves and configures an optimum ratio between the greatest possible transport stability and the smallest possible tearing force necessary to open the perforation line. Thus, the angle of attack α, for example, in the area of top bottles very pointed, so be formed sharper than in other areas, since in this area the package has little load to bear, but a comparatively easy and clean tearing of the perforation is advantageous while the angle of attack α in the range of side walls over the longest possible path of the perforation line parallel to the shaft alignment of a corrugated cardboard having the perforation and thus realizes the highest possible Stapelstauchwiderstand.

Besonders vorteilhaft ist es, wenn der Anstellwinkel α derart gewählt wird, dass der auf die Materiallücke beim Aufreißen der Öflhungshilfe einwirkende Kraftvektor einen Winkel β zwischen Materiallücke und Kraftvektor von 75° bis 105° bildet, also der auf die Materiallücken jeweils einwirkende Kraftvektor zwischen sich und der Materiallücke einen Winkel von 75° bis 105° bildet. Hierdurch wird eine für den Benutzer über den Aufreißweg, der der Perforationslinie folgt, gleich bleibend wirkende Öffnungskraft realisiert, die durch den Benutzer regelmäßig als angenehm empfunden wird.It is particularly advantageous if the angle of attack α is selected such that the force vector acting on the material gap when the opening aid is torn forms an angle β between material gap and force vector of 75 ° to 105 °, ie the force vector acting on the material gaps between itself and the material gap forms an angle of 75 ° to 105 °. As a result, a self-acting for the user on the Aufreißweg, which follows the perforation line, acting opening force is realized, which is regularly felt by the user to be pleasant.

Verpackungsmaterialpacking material

Als Material für einen Behälter der Art für die Öffnungshilfe kommt jedes faltbare Material aus Wellpappe in Frage.As a material for a container of the type for the opening aid is every foldable material made of corrugated cardboard in question.

Die Öffnungshilfe ist insbesondere geeignet für ein-, zwei- und weitere mehrwellige Pappen.The opening aid is particularly suitable for one-, two- and more multi-shaft boards.

Ein Wellpappekarton mit Deck- bzw. Wellenpapier sollte vorzugsweise eine gute Bedruckbarkeit und Faltbarkeit aufweisen sowie über eine geeignete Stabilität verfügen. Ferner sollte sich das Papier für die Verarbeitung in automatisierten Herstellungsprozessen wie Aufricht- und Abfüllanlage eignen. Bei dem faltbaren Papier kann es sich um die unterschiedlichsten Papiere handeln, an denen eine Perforation ausbildbar ist.A corrugated cardboard with cover paper or corrugated paper should preferably have good printability and foldability and have suitable stability. Furthermore, the paper should be suitable for processing in automated manufacturing processes such as erecting and filling equipment. The foldable paper can be a variety of papers on which a perforation can be formed.

In Folgenden wird die Erfindung anhand einer lediglich Ausführungsbeispiele darstellenden Zeichnung näher erläutert. Dabei werden auch besonders bevorzugte Ausgestaltungen und besonders bevorzugte Kombinationen von Merkmalen im Einzelnen weiter beschrieben. Es zeigen:

Fig. 1
einen Faltzuschnitt einer erfindungsgemäßen Verpackung mit Öffnungshilfe,
Fig. 2
eine Detailansicht der gemäß Fig.1 als Perforationslinie ausgebildeten Öff- nungshilfe,
Fig. 3
einen Ausschnitt der Perforationslinie gemäß Fig. 1 bzw. Fig. 2 mit angreifen- dem Kraftvektor und veränderlichem Anstellwinkel α und
Fig. 4
in vergrößerter Darstellung die gemäß Fig. 1 bzw. 2 als Perforationslinie ausge- bildete Öffnungshilfe mit veränderlichem Anstellwinkel α und erstem und zweitem Wendepunkt.
In the following the invention will be explained in more detail with reference to a drawing illustrating only embodiments. In this case, particularly preferred embodiments and particularly preferred combinations of features are further described in detail. Show it:
Fig. 1
a folding blank of a packaging according to the invention with an opening aid,
Fig. 2
a detailed view of according to Fig.1 formed as a perforation line opening aid,
Fig. 3
a section of the perforation line according to Fig. 1 respectively. Fig. 2 with attacking force vector and variable angle of attack α and
Fig. 4
in an enlarged view according to Fig. 1 or 2 opening aid designed as perforation line with variable angle of attack α and first and second turning point.

Fig. 1 zeigt einen Zuschnitt Für eine Produkt-Umverpackung aus Pappe. Eine derartige Kartonage wird auch als "shelf-ready-box" bezeichnet. Der Zuschnitt 1 weist eine erste Seitenwand 6a, eine zweite Seitenwand 6b sowie eine Vorderwand 7a und eine Rückwand 7b auf. Im zusammengebauten (aufgerichteten) Zustand der Produkt-Umverpackung ist der Zuschnitt 1 zu einem Schlauch geformt, also zu einem ringförmig geschlossenen Körper, der zunächst offene Stirnseiten belässt. Am oberen Rand der den Schlauch bildenden Wände 6a, 6b, 7a, 7b sind Kopflaschen 8a, 8b, 9a, 9b schwenkbar angeordnet, die im zusammengebauten Zustand der Produkt-Umverpackung die Kopföffnung, also die eine offene Stirnseite des Schlauchs zumindest teilweise überdecken. Fig. 1 shows a blank For a product outer packaging made of cardboard. Such a cardboard is also referred to as a shelf-ready box. The blank 1 has a first side wall 6a, a second side wall 6b and a front wall 7a and a rear wall 7b. In the assembled (erected) state of the product outer packaging, the blank 1 is formed into a tube, that is to say into an annularly closed body, which initially leaves open end faces. At the upper edge of the tube forming walls 6a, 6b, 7a, 7b head bottles 8a, 8b, 9a, 9b are pivotally arranged, which cover the head opening, so the one open end of the tube at least partially in the assembled state of the product outer packaging.

Der Zuschnitt 1 weist eine durch eine Perforationslinie 2 gebildete Öffnungshilfe auf. Die Perforationslinie 2 erstreckt sich in Bezug auf die Vorderwand 7a und die Kopflasehe 9a spiegelsymmetrisch von der Vorderwand 7a aus über die Seitenwände 6a und 6b sowie über die Kopflaschen 8a und 8b. Die Perforationslinie 2 bildet im aufgebauten Zustand des Zuschnitts 1 einen geschlossenen Linienzug aus, der Bereiche der Vorderwand 7a, der Seitenwände 6a, 6b sowie der Kopflaschen 8a und 8b einschließt. Die Vorderwand 7a weist an ihrem bodenseitigen Ende eine Grifföffnung 5 auf, durch die ein Benutzer zum Aufreißen des durch die Perforationslinie 2 begrenzten Bereichs eingreifen kann.The blank 1 has an opening aid formed by a perforation line 2. The perforation line 2 extends mirror-symmetrically with respect to the front wall 7a and the head nose 9a from the front wall 7a via the side walls 6a and 6b as well as via the head lugs 8a and 8b. The perforation line 2 forms in the assembled state of the blank 1 from a closed polyline, which includes areas of the front wall 7a, the side walls 6a, 6b and the head lugs 8a and 8b. The front wall 7a has at its bottom end on a handle opening 5, through which a user can intervene to rupture of the limited area by the perforation line 2.

Der Verlauf der Perforationslinie 2 weist im unteren Bereich der Seitenwand 6a bzw. 6b jeweils einen ersten Wendepunkt 10a bzw. 10b auf. Ein zweiter Wendepunkt 11a bzw. 11 b ist an der Kopflasche 8a bzw. 8b angeordnet. Zwischen den beiden Wendepunkten 10a, 11a bzw. 11a, 11b verläuft die Perforationslinie 2 mit Abschnitten 2a bzw. 2b in etwa parabelförmig.The course of the perforation line 2 has in each case a first inflection point 10a or 10b in the lower region of the side wall 6a or 6b. A second inflection point 11a or 11b is arranged on the top flap 8a or 8b. Between the two turning points 10a, 11a and 11a, 11b, the perforation line 2 extends with sections 2a and 2b in approximately parabolic.

Fig. 2 zeigt eine Detailansicht der Perforationslinie 2 und deren Verlauf über die Vorderwand, eine Seitenwand sowie eine Kopflasche. Die Perforationslinie 2 besteht aus Materiallücken 3 und Materialbrücken 4, wobei die Materiallücke 4 nach Art eines Schlitzes strichförmig ausgebildet ist. Die in Fig. 2 gezeigten und mit W bezeichneten Strich-Punkt-Linien geben die Wellenausrichtung einer Wellpappe an, aus der der Zuschnitt 1 geformt bzw. gebildet ist. Die Strich-Punkt-Linien W verlaufen somit parallel zu einem Wellental oder Wellenberg der Wellpappe. Fig. 2 shows a detailed view of the perforation line 2 and its course over the front wall, a side wall and a top flap. The perforation line 2 consists of material gaps 3 and material bridges 4, wherein the material gap 4 is formed like a line in the manner of a slit. In the Fig. 2 The dash-dot lines shown and labeled W indicate the shaft alignment of a corrugated board from which the blank 1 is formed. The dash-dot lines W thus run parallel to a wave trough or wave crest of the corrugated board.

Wie aus Fig. 2 weiterhin ersichtlich, verlaufen die strichförmigen Materiallücken 3 im unteren Bereich der Perforationslinie 2 im Wesentlichen parallel zur Wellenausrichtung W, wobei sie im oberen Bereich eine von der Parallelen abweichende Orientierung aufweisen.How out Fig. 2 Furthermore, the strip-shaped material gaps 3 extend in the lower region of the perforation line 2 essentially parallel to the shaft alignment W, wherein they have an orientation deviating from the parallel in the upper region.

Fig. 3 zeigt eine Detailansicht der Perforationslinie 2 mit an den Materiallücken 3 anliegenden Kraftvektoren die jeweils beim Aufreißen der Öffnungshilfe auf die Materiallücken 3 einwirken. Der Anstellwinkel α ist dabei derart gewählt, dass der auf die strichförmige Materiallücke 3 beim Aufreißen der Öffnungshilfe einwirkende Kraftvektor einen Winkel β zwischen Materiallücke 3 und Kraftvektor von 75 bis 105° bildet, die Kraftvektoren also unter solchen Winkeln β auf den strichförmigen Materiallücken 3 stehen. Fig. 3 shows a detailed view of the perforation line 2 with voltage applied to the material gaps 3 force vectors each acting on the gaps 3 when tearing the opening aid. The angle of attack α is selected such that the force vector acting on the line-shaped material gap 3 when the opening aid is torn forms an angle β between the material gap 3 and the force vector of 75 to 105 °, ie the force vectors are at the line-shaped material gaps 3 at such angles β.

Der Verlauf des Anstellwinkels α zwischen dem ersten Wendepunkt 10 und dem zweiten Wendepunkt 11 ist gut anhand von Fig. 4 zu erkennen. Dort sind, ausgehend von einem unteren Bereich, die Materiallücken 3 zunächst parallel zur Wellenausrichtung W gerichtet, während sie im oberen Bereich zur Perforationslinie 2 hin kippen, wobei letztere in einem mittleren Bereich zunehmend gekrümmt verläuft. In jedem Fall sind der Verlauf der Perforationslinie 2 und die Ausrichtungen der Materiallücken 3 derart, dass sich der Anstellwinkel α von Materiallücke zu Materiallücke ändert.The course of the angle of attack α between the first inflection point 10 and the second inflection point 11 is well based on Fig. 4 to recognize. There, starting from a lower region, the material gaps 3 are initially directed parallel to the wave orientation W, while they tilt in the upper region to the perforation line 2, the latter extending in an increasingly curved area in a central region. In any case, the course of the perforation line 2 and the orientations of the material gaps 3 are such that the angle of attack α changes from material gap to material gap.

Bezugszeichenreference numeral

11
Faltzuschnittfolding blank
22
Perforationslinieperforation
33
Materiallückematerial gap
44
Materialbrückematerial bridge
55
Grifföffnunggrip opening
66
SeitenwandSide wall
77
Vorder- und RückwandFront and back wall
88th
Kopflaschetop flap
99
Kopflaschetop flap
1010
Wendepunktturning point
1111
Wendepunktturning point

Claims (6)

  1. Foldable package made of corrugated cardboard, namely cardboard package, shipping box, shipping case or similar cardboard packaging, in the flat or erected state, which is designed with a perforation as an opening aid which has a perforation line (2, 2a, 2b) that, in the folding blank (1) lying flat, is bent at least in sections and that has material bridges (4) and slot-like material gaps (3) in a line, wherein the material bridges (4) and material gaps (3) have an orientation differing from tangents to the perforation line (2) and this orientation is determined by a pitch angle (α) which is variable over the course of the perforation line (2) and which is defined as an acute angle which is formed by two tangents in each case at the point of penetration, i.e. the point of intersection of the perforation line (2) and the course of a material gap (3), namely by the tangent of the course of the perforation line and the tangent of the course of the material gap (3), wherein the package has a front wall (7a) between a first and a second side wall (6a, 6b), characterised in that the package has a first top flap (8a) arranged pivotably at an upper edge of the first side wall (6a) and a second top flap (8b) arranged pivotably at an upper edge of the second side wall (6b), in that the orientation (W) of corrugations of the corrugated cardboard is oriented from a lower end to the upper edge of the side walls (6a, 6b), in that the perforation line (2) extends over the front wall (7a), the first side wall (6a), the second side wall (6b) and the top flaps (8a, 8b), wherein on each side wall (6a, 6b) in its lower region is formed a first inflexion point (10, 10a, 10b) and on each top flap (8a, 8b) is formed a second inflexion point (11, 11, 11b) of the perforation line (2, 2a, 2b), and the perforation line (2, 2a, 2b), seen in the folding blank (1) lying flat, extends arcuately between in each case the first and second inflexion points (10, 11; 10a, 10b; 11, 11b), and in that the material gaps (3) in the lower region of the arcuate perforation line (2, 2a, 2b) between the two inflexion points (10, 11; 10a, 10b; 11a, 11b) extend substantially parallel to the orientation (W) of corrugations of the corrugated cardboard folding blank (1), while in each case in the upper region of the arcuate perforation line (2, 2a, 2b) between the inflexion points (10, 11; 10a, 10b; 11a, 11b) they have an orientation differing from the orientation (W) of corrugations of the corrugated cardboard.
  2. Package according to claim 1, characterised in that the pitch angle (α) is selected so that the force vector respectively acting on the material gaps (3) when the opening aid is torn open forms an angle (β) from 75° to 105° between itself and the material gap (3).
  3. Package according to claim 1 or 2, characterised in that the perforation line (2) between the first inflexion point (10, 10a, 10b) and the second inflexion point (11, 11a, 11b) shows an approximately parabolic course.
  4. Package according to any of claims 1 to 3, characterised in that, starting from the first inflexion point (10, 10a, 10b) respectively, at least 50% of the path of the perforation line to the second inflexion point (11, 11a, 11b) is designed with material gaps (3) substantially parallel to the orientation (W) of corrugations of the corrugated cardboard.
  5. Package according to any one of claims 1 to 4, characterised in that the perforation line (2) in the erected state of the package forms a closed continuous line.
  6. Package according to any one of claims 1 to 5, characterised in that the pitch angle (α) is more acute in the region of the top flaps (8a, 8b) than in the side walls (6a, 6b).
EP20080075733 2007-08-29 2008-08-27 Foldable package having opening aid with variable pitch of perforations Active EP2030901B9 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710041005 DE102007041005A1 (en) 2007-08-29 2007-08-29 Opening aid with variable angle of attack

Publications (3)

Publication Number Publication Date
EP2030901A1 EP2030901A1 (en) 2009-03-04
EP2030901B1 true EP2030901B1 (en) 2011-10-19
EP2030901B9 EP2030901B9 (en) 2012-08-15

Family

ID=39941521

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Application Number Title Priority Date Filing Date
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Country Status (3)

Country Link
EP (1) EP2030901B9 (en)
DE (2) DE102007041005A1 (en)
ES (1) ES2375669T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010003107U1 (en) 2010-02-27 2011-07-20 Smurfit Kappa Gmbh Rectangular transport and display packaging and a pair of corrugated board blanks for erecting and assembling the packaging
DE102015003067B4 (en) * 2015-03-05 2021-06-24 Thimm Verpackung Gmbh + Co. Kg Packaging for cylindrical objects and cutting therefor
DE102019103027B4 (en) * 2019-02-07 2022-06-09 Karl Marbach Gmbh & Co. Kg Corrugated cardboard with tear device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967010A (en) * 1958-03-21 1961-01-03 Kimberly Clark Co Cellulosic product
US3620438A (en) * 1970-04-01 1971-11-16 A L Garber Co Means to reduce delamination of cartons having removable access panels
DE8305558U1 (en) * 1983-02-26 1983-11-03 Vereinigte Papierwerke Schickedanz & Co, 8500 Nürnberg Handkerchief box
DE10227050B3 (en) * 2002-06-17 2004-01-29 Albert Frey Verpackungsentwicklungen Und Vertriebs-Gmbh Corrugated cardboard with tear line

Also Published As

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EP2030901A1 (en) 2009-03-04
ES2375669T3 (en) 2012-03-05
DE102007041005A1 (en) 2009-03-05
DE202008011556U1 (en) 2008-11-27
EP2030901B9 (en) 2012-08-15

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