EP2377678B1 - Creasing tool - Google Patents

Creasing tool Download PDF

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Publication number
EP2377678B1
EP2377678B1 EP11159209.3A EP11159209A EP2377678B1 EP 2377678 B1 EP2377678 B1 EP 2377678B1 EP 11159209 A EP11159209 A EP 11159209A EP 2377678 B1 EP2377678 B1 EP 2377678B1
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EP
European Patent Office
Prior art keywords
creasing
region
line
groove
tool according
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EP11159209.3A
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German (de)
French (fr)
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EP2377678A1 (en
Inventor
Erdinc Agirbas
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British American Tobacco Germany GmbH
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British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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Priority to PL11159209T priority Critical patent/PL2377678T3/en
Publication of EP2377678A1 publication Critical patent/EP2377678A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B31F1/10—Creasing by rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B31B50/252—Surface scoring using presses or dies

Definitions

  • the invention relates to a scoring tool for embossing line-shaped folding grooves in flat materials. Furthermore, the invention relates to a sheet material, in particular a web or sheet material with at least one groove, which is formed in particular by pressing such a Rilltechnikuges in the surface of the sheet material. Another aspect of the present invention relates to a receptacle, in particular a box, in particular a cigarette packet comprising such a sheet material.
  • scoring tools see, for example GB 1389283 A known as creasing lines, which are used in the manufacture of cigarette packets to be folded, in order to characterize so-called creases.
  • creasing lines which are used in the manufacture of cigarette packets to be folded, in order to characterize so-called creases.
  • the blunt crease line of the creasing tool is pressed onto the material, so that a corresponding crease is formed in the material.
  • the known creasing lines have at their ends sharp 90 ° angle, which causes the creasing strong tensions, so-called notch stresses in the material to be embossed, such as cardboard. These tensions ultimately lead to the carton surface bursting in the region of the ends of the groove during the subsequent folding of the cardboard.
  • a further object of the present invention is to provide a sheet material with at least one groove, in which the risk of bursting or tearing in the region of the ends of a creasing during folding is not given.
  • the scoring tool according to the invention has a main body having a line-shaped score line, the score line rising in an area towards an end face of the base body.
  • the crease line is raised in an area toward the end of the crease line.
  • lifting is to be understood in the present case that instead of the previous 90 ° angle in the known scoring tools, a "softer" transition of the score line to the end of the score line is created. If such a trained scoring tool is pressed into a material to be embossed, the lifting crease line is not pressed as deep into the material, as is the case in the other areas to the center of the creasing. The result is a reduction of the groove depth to the end of the grooving created by the grooving tool in the material. Thus it is achieved that the deformation of the material caused by indentation of the scoring tool, starting from the undeformed material near the end of the scoring towards the middle of the scoring, where the deformation of the material reaches its maximum, only increases moderately.
  • the scoring tool has a flat, in particular strip-like basic body, which in particular comprises a steel strip knife or is formed from such.
  • the crease line has a smaller thickness relative to the base body. In this way, the same effect is achieved as is the case by raising the crease line along the creasing tool. If the crease line in the cross-section of the base body has a smaller thickness than the main body, it can easily be imagined that the deformation of the material caused by the creasing of the creasing tool gradually and not abruptly increases over the cross section of the crease, so that here as well Notch stresses are avoided. In particular, in the cross section of the scoring tool, a trapezoidal or semi-circular or gurellipsenförmiger course of the scoring tool to the score line towards imaginable, for this purpose, any other course of the scoring tool is conceivable.
  • the score line in the cross section of the scoring tool should be dull, as this also notch stress in the groove can be avoided.
  • the crease line of the creasing tool lifts in the region of both end faces of the base body to the respective end face.
  • a scoring tool can be used when the grooving produced by this scoring tool should both begin and end on the material surface and should not extend beyond a material edge.
  • the crease line can run at least partially, in particular substantially and in particular exclusively in a straight line, and this can apply in two ways: First, it is conceivable that the creasing depth over the course of the creasing produced by such creasing tool is at least partially in particular substantially or in particular exclusively constant, one refrains from the elevations to reduce the notch stresses in the end regions of the grooving. On the other hand, it is conceivable that the scoring tool and thus also the generated creases seen from the top of the material surface at least partially, in particular substantially and in particular exclusively rectilinear, so that the subsequent, the crease following creasing in the material in the said areas is straight.
  • the elevation (s) of the score line is created by chamfering the score line to the face (s), the chamfer (s) having an angle in the area with the rectilinear areas of the score from 3 ° to 45 °, in particular in the range of 5 ° to 30 ° or in particular in the range of 10 ° to 15 °.
  • the elevations can be created by milling.
  • the angle enclosed by the rectilinear regions and the chamfer (s) is between 3 ° and 45 °, in particular between 5 ° and 30 °, in particular between 10 ° and 15 ° ° is.
  • rectilinear is to be understood that the rectilinear regions leave a groove of constant embossing depth after the impressing of the scoring tool.
  • Straight line here means a horizontal course of these areas with a horizontal course of the material surface.
  • the score line may be rounded off towards the end face (s), which is to be understood as meaning that the score line has a rounding in an elevation of the scoring tool, in its place when embossing Grooving the grooving ends.
  • the groove depth decreases towards the end of the groove even with such a configuration.
  • the score line in the region of the increase (s) may be rounded off in a section in the area of the elevation (s), but it may also be flat.
  • Another aspect of the present invention relates to a sheet material having at least one groove comprising a first region having a first groove depth and at least a second region having a second groove depth, the second groove depth being less than the first groove depth and the second region being an end region of the groove is.
  • Such a sheet material can be produced by pressing a grooving tool as described above into the surface of the sheet material.
  • the second groove depth which is lower than the first groove depth, results in a "stress relief" of the end regions of the groove, which ultimately effectively prevents the material from bursting or tearing at the end regions of the groove.
  • the material may be a sheet or sheet material, and according to the present invention, in particular a dimensionally stable material, and in particular paper, cardboard, solid board or corrugated cardboard may be used.
  • a dimensionally stable material and in particular paper, cardboard, solid board or corrugated cardboard may be used.
  • any plastic to be provided according to the present invention with a grooving.
  • the scoring may be according to the present invention, a folding channel, on which the sheet material is bent.
  • the groove depth of the second region decreases toward the end of the groove.
  • a constant reduction over the course of the scoring is advantageous in this case, with a reduction of the scoring depth from the first scoring depth to zero being considered to be advantageous in particular.
  • any gradual reduction is conceivable unless there is a sudden increase from "no deformation” to "maximum deformation”.
  • the flat material according to the invention described above can be bent or folded over particularly well, without causing any bursting or tearing comes in the field of creases. It is thus also particularly suitable for producing receptacles, in particular boxes or in particular cigarette packs.
  • FIGS. 1a to 1c shows a first embodiment of the scoring tool according to the invention.
  • This comprises a main body 1, which has a score line 2 on its underside.
  • This score line 2 is chamfered in the region of both end faces 3 to both end faces 3 and thus stands out from lying between the chamfers straight line of the score line 2, wherein the chamfers with the rectilinear portions of the score line 2 form an angle ⁇ . It is not necessary for both chamfers to include the same angle, but it is conceivable that different chamfers may include different angles.
  • FIG. 1b is a side elevation of the scoring tool from the FIG. 1a to see, with the score line 2 is rounded in cross section. It is good to see that the crease line in the area of the chamfers has a straight blunt lower edge, while it is rounded in the area between the chamfers.
  • FIG. 1c is a plan view of the scoring tool according to the invention to see, being shown on both end faces of the scoring tool towards elliptical edges, which arise in the manner of a cylindrical section through a simple chamfering of the rounded score line 2.
  • FIG. 2 is an area of a second embodiment of the scoring tool according to the invention to see, with the increase is formed to a front side 3 through a radius r.
  • a particularly smooth course of the embossing is produced and thus notch stresses are avoided.
  • the score line 2 can according to the embodiment of the FIG. 2 be both rounded and dull in cross-section 4 in cross-section, with any other suitable form of crease line is conceivable.
  • FIG. 3a is a material web to see, which has an embossed according to the prior art groove 5.
  • This grooving is done by impressing a known from the prior art scoring tool (side and side elevation left in FIG. 3a formed), wherein between crease line and end face of the creasing tool, a 90 ° angle is formed. It is obvious that 5 very high notch stresses occur in the material in the end region of the grooving, since the deformation suddenly reaches its maximum, starting from no deformation in the vicinity of the grooving to maximum deformation in the end region of the grooving.
  • FIG. 3b a web of material according to the present invention (side and side elevation of such a tool left in the FIG. 3b to see) engraved groove 5 shown.
  • This groove has a first region 6 with a first constant groove depth and a second groove region 7 with a second groove depth, whereby the groove depth in the second region 7 is continuously reduced from the first groove depth to the end of the groove 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Description

Die Erfindung betrifft ein Rillwerkzeug zum Prägen von linienförmigen Faltrillen in flächige Materialien. Des Weiteren betrifft die Erfindung ein flächiges Material, insbesondere ein Bahn- oder Bogenmaterial mit zumindest einer Rillung, die im Speziellen durch Eindrücken eines solches Rillwerkeuges in die Oberfläche des flächigen Materials gebildet wird. Ein weiterer Aspekt der vorliegenden Erfindung betrifft ein Aufnahmebehältnis, insbesondere eine Schachtel, im Speziellen eine Zigarettenpackung umfassend ein solches flächiges Material.The invention relates to a scoring tool for embossing line-shaped folding grooves in flat materials. Furthermore, the invention relates to a sheet material, in particular a web or sheet material with at least one groove, which is formed in particular by pressing such a Rillwerkuges in the surface of the sheet material. Another aspect of the present invention relates to a receptacle, in particular a box, in particular a cigarette packet comprising such a sheet material.

Im Stand der Technik sind Rillwerkzeuge siehe z.B GB 1389283 A , so genannte Rilllinien bekannt, welche bei der Herstellung von zu faltenden Zigarettenpackungen verwendet werden, um so genannte Rillungen zu prägen. Hierzu wird die stumpfe Rilllinie des Rillwerkzeugs auf das Material gepresst, so dass eine entsprechende Rillung in das Material eingeformt wird.In the prior art, scoring tools see, for example GB 1389283 A known as creasing lines, which are used in the manufacture of cigarette packets to be folded, in order to characterize so-called creases. For this purpose, the blunt crease line of the creasing tool is pressed onto the material, so that a corresponding crease is formed in the material.

Die bekannten Rilllinien haben an ihren Enden scharfe 90°-Winkel, was beim Rillvorgang starke Spannungen, so genannte Kerbspannungen im zu prägenden Material, beispielsweise Karton verursacht. Diese Spannungen führen letztendlich dazu, dass beim anschließenden Falten des Kartons die Kartonoberfläche im Bereich der Enden der Rillung aufplatzt.The known creasing lines have at their ends sharp 90 ° angle, which causes the creasing strong tensions, so-called notch stresses in the material to be embossed, such as cardboard. These tensions ultimately lead to the carton surface bursting in the region of the ends of the groove during the subsequent folding of the cardboard.

Es ist die Aufgabe der vorliegenden Erfindung, ein Rillwerkzeug bereitzustellen, durch dessen Einsatz Rillungen erzeugt werden können, bei denen die Gefahr des Aufplatzens oder Aufreißens des geprägten flächigen Materials beim Falten vermieden wird.It is the object of the present invention to provide a scoring tool, by the use of which grooves can be produced in which the risk of bursting or tearing of the embossed sheet material during folding is avoided.

Diese Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in claim 1.

Eine weitere Aufgabe der vorliegenden Erfindung ist es, ein flächiges Material mit zumindest einer Rillung bereitzustellen, bei dem die Gefahr des Aufplatzens oder Aufreißens im Bereich der Enden einer Rillung beim Falten nicht gegeben ist.A further object of the present invention is to provide a sheet material with at least one groove, in which the risk of bursting or tearing in the region of the ends of a creasing during folding is not given.

Diese Aufgabe wird durch die im Anspruch 10 angegebenen Merkmale gelöst.This object is achieved by the features specified in claim 10.

Bevorzugte Ausführungsformen der vorliegenden Erfindung werden durch die abhängigen Schutzansprüche definiert.Preferred embodiments of the present invention are defined by the dependent claims.

Das erfindungsgemäße Rillwerkzeug hat einen eine linienförmige Rillinie aufweisenden Grundkörper, wobei sich die Rilllinie in einem Bereich zu einer Stirnseite des Grundkörpers hin anhebt. Mit anderen Worten hebt sich die Rilllinie in einem Bereich zum Ende der Rilllinie hin ab.The scoring tool according to the invention has a main body having a line-shaped score line, the score line rising in an area towards an end face of the base body. In other words, the crease line is raised in an area toward the end of the crease line.

Der Begriff "Anheben" ist vorliegend so zu verstehen, dass an Stelle des bisherigen 90°-Winkels bei den bekannten Rillwerkzeugen ein "weicherer" Übergang der Rilllinie zum Ende der Rilllinie hin geschaffen wird. Wenn ein derart ausgebildetes Rillwerkzeug in ein zu prägendes Material eingedrückt wird, wird die sich anhebende Rilllinie nicht so tief in das Material eingedrückt, wie das bei den übrigen Bereichen zur Mitte des Rillwerkzeugs hin der Fall ist. Das Ergebnis ist eine Verringerung der Rilltiefe zum Ende der durch das Rillwerkzeug geschaffenen Rillung im Material. So wird erreicht, dass die durch Eindrücken des Rillwerkzeugs hervorgerufene Deformation des Materials, ausgehend vom undeformierten Material nahe dem Ende der Rillung zur Mitte der Rillung hin, wo die Deformation des Materials ihr Maximum erreicht, nur mäßig ansteigt. Dies stellt einen großen Vorteil gegenüber dem Stand der Technik dar, bei dem die Deformation im Bereich des Endes der Rillung zur Mitte der Rillung hin schlagartig ihr Maximum erreicht. Auf diese Weise werden die starken Kerbspannungen im Bereich des Endes der Rillung vermieden, welche letztendlich für das Aufreißen oder -platzen des Materials beim Falten verantwortlich sind.The term "lifting" is to be understood in the present case that instead of the previous 90 ° angle in the known scoring tools, a "softer" transition of the score line to the end of the score line is created. If such a trained scoring tool is pressed into a material to be embossed, the lifting crease line is not pressed as deep into the material, as is the case in the other areas to the center of the creasing. The result is a reduction of the groove depth to the end of the grooving created by the grooving tool in the material. Thus it is achieved that the deformation of the material caused by indentation of the scoring tool, starting from the undeformed material near the end of the scoring towards the middle of the scoring, where the deformation of the material reaches its maximum, only increases moderately. This represents a great advantage over the prior art, in which the deformation in the region of the end of the grooving abruptly reaches its maximum towards the middle of the grooving. In this way, the strong notch stresses in the area of the end of the grooving are avoided, which are ultimately responsible for the rupture or bursting of the material during folding.

In einer weiteren bevorzugten Ausführungsform weist das Rillwerkzeug einen flachen, insbesondere streifenartigen Grundkörper auf, wobei dieser im Speziellen ein Stahlbandmesser umfasst oder aus einem solchen gebildet ist.In a further preferred embodiment, the scoring tool has a flat, in particular strip-like basic body, which in particular comprises a steel strip knife or is formed from such.

In einer weiteren bevorzugten Ausführungsform weist die Rilllinie gegenüber dem Grundkörper eine geringere Dicke auf. Auf diese Weise wird derselbe Effekt erzielt, wie dies durch die Anhebung der Rilllinie längs des Rillwerkzeugs der Fall ist. Wenn die Rilllinie im Querschnitt des Grundkörpers eine geringere Dicke aufweist als der Grundkörper, kann man sich leicht vorstellen, dass die durch das Eindrücken des Rillwerkzeugs in das Material hervorgerufene Deformation des Materials über den Querschnitt der Rillung allmählich und nicht schlagartig zunimmt, so dass auch hier Kerbspannungen vermieden werden. Insbesondere ist im Querschnitt des Rillwerkzeugs ein trapezförmiger oder halbrunder bzw. halbellipsenförmiger Verlauf des Rillwerkzeugs zur Rilllinie hin vorstellbar, wobei hierzu ebenso jeder andere Verlauf des Rillwerkzeugs vorstellbar ist.In a further preferred embodiment, the crease line has a smaller thickness relative to the base body. In this way, the same effect is achieved as is the case by raising the crease line along the creasing tool. If the crease line in the cross-section of the base body has a smaller thickness than the main body, it can easily be imagined that the deformation of the material caused by the creasing of the creasing tool gradually and not abruptly increases over the cross section of the crease, so that here as well Notch stresses are avoided. In particular, in the cross section of the scoring tool, a trapezoidal or semi-circular or halbellipsenförmiger course of the scoring tool to the score line towards imaginable, for this purpose, any other course of the scoring tool is conceivable.

Auch sollte die Rilllinie im Querschnitt des Rillwerkzeugs stumpf sein, da hierdurch ebenso Kerbspannungen in der Rillung vermieden werden können.Also, the score line in the cross section of the scoring tool should be dull, as this also notch stress in the groove can be avoided.

In einer weiteren bevorzugten Ausführungsform hebt sich die Rilllinie des Rillwerkzeugs im Bereich beider Stirnseiten des Grundkörpers zur jeweiligen Stirnseite hin an. Ein solches Rillwerkzeug kann dann Einsatz finden, wenn die durch dieses Rillwerkzeug erzeugte Rillung auf der Materialoberfläche sowohl beginnen als auch enden soll und nicht über eine Materialkante hinaus verlaufen soll.In a further preferred embodiment, the crease line of the creasing tool lifts in the region of both end faces of the base body to the respective end face. Such a scoring tool can be used when the grooving produced by this scoring tool should both begin and end on the material surface and should not extend beyond a material edge.

Wie oben schon angesprochen kann die Rilllinie zumindest teilweise, insbesondere im Wesentlichen und im Speziellen ausschließlich geradlinig verlaufen, wobei dies in zweierlei Weise gelten kann: Zum einen ist es denkbar, dass die Rilltiefe über den Verlauf der durch ein solches Rillwerkzeug erzeugten Rillung zumindest teilweise, insbesondere im Wesentlichen oder im Speziellen ausschließlich konstant ist, sieht man von den Anhebungen zur Verminderung der Kerbspannungen in den Endbereichen der Rillung ab. Zum anderen ist es denkbar, dass das Rillwerkzeug und somit auch die erzeugten Rillungen von oben auf die Materialoberfläche gesehen zumindest teilweise, insbesondere im Wesentlichen und im Speziellen ausschließlich geradlinig verlaufen, so dass die spätere, der Rillung folgende Knickkante im Material in den genannten Bereichen gerade verläuft.As already mentioned above, the crease line can run at least partially, in particular substantially and in particular exclusively in a straight line, and this can apply in two ways: First, it is conceivable that the creasing depth over the course of the creasing produced by such creasing tool is at least partially in particular substantially or in particular exclusively constant, one refrains from the elevations to reduce the notch stresses in the end regions of the grooving. On the other hand, it is conceivable that the scoring tool and thus also the generated creases seen from the top of the material surface at least partially, in particular substantially and in particular exclusively rectilinear, so that the subsequent, the crease following creasing in the material in the said areas is straight.

In einer bevorzugten Ausführungsform wird (werden) die Anhebung(en) der Rilllinie dadurch erzeugt, indem die Rilllinie zu der (den) Stirnseite(n) hin angefast ist, wobei die Fase(n) mit den geradlinigen Bereichen der Rillung einen Winkel im Bereich von 3° bis 45°, insbesondere im Bereich von 5° bis 30° oder im Speziellen im Bereich von 10° bis 15° einschließt. Im Allgemeinen können die Anhebungen durch Fräsen erzeugt werden. Durch das einfache Anfasen der Rilllinie kann auf sehr einfache und kostengünstige Weise ein Rillwerkzeug hergestellt werden, welches das Erfordernis der oben beschriebenen Ausgestaltung eines erfindungsgemäßen Rillwerkzeuges erfüllt. Man hat festgestellt, dass besonders gute Ergebnisse erzielt werden können, wenn der von den geradlinigen Bereichen und der/den Fase(n) eingeschlossene Winkel zwischen 3° und 45°, insbesondere zwischen 5° bis 30°, im Speziellen zwischen 10° und 15° liegt. Hier ist die Bezeichnung "geradlinig" so zu verstehen, dass die geradlinigen Bereiche nach dem Einprägen des Rillwerkzeugs eine Rillung konstanter Prägetiefe hinterlassen. Geradlinig bedeutet hier also einen horizontalen Verlauf dieser Bereiche bei einem horizontalen Verlauf der Materialoberfläche.In a preferred embodiment, the elevation (s) of the score line is created by chamfering the score line to the face (s), the chamfer (s) having an angle in the area with the rectilinear areas of the score from 3 ° to 45 °, in particular in the range of 5 ° to 30 ° or in particular in the range of 10 ° to 15 °. In general, the elevations can be created by milling. By simply chamfering the crease line can be produced in a very simple and cost-effective manner a scoring tool, which meets the requirement of the above-described embodiment of a scoring tool according to the invention. It has been found that particularly good results can be obtained when the angle enclosed by the rectilinear regions and the chamfer (s) is between 3 ° and 45 °, in particular between 5 ° and 30 °, in particular between 10 ° and 15 ° ° is. Here, the term "rectilinear" is to be understood that the rectilinear regions leave a groove of constant embossing depth after the impressing of the scoring tool. Straight line here means a horizontal course of these areas with a horizontal course of the material surface.

In einer anderen Ausführungsform kann die Rilllinie an Stelle der vorher beschriebenen Anfasung zu der (den) Stirnseite(n) hin abgerundet sein, was so zu verstehen ist, dass die Rilllinie in einem Aufriss des Rillwerkzeugs eine Rundung aufweist, an deren Stelle beim Einprägen der Rillung die Rillung endet. Die Rilltiefe verringert sich zum Ende der Rillung auch bei einer solchen Ausgestaltung.In another embodiment, instead of the previously described chamfering, the score line may be rounded off towards the end face (s), which is to be understood as meaning that the score line has a rounding in an elevation of the scoring tool, in its place when embossing Grooving the grooving ends. The groove depth decreases towards the end of the groove even with such a configuration.

Weiterhin sind verschiedene Ausgestaltungen der Rilllinie im Bereich der Anhebung(en) denkbar. Zum einen kann die Rilllinie in einem Querschnitt im Bereich der Anhebung(en) abgerundet sein, sie kann aber auch flach sein.Furthermore, various embodiments of the score line in the region of the increase (s) are conceivable. On the one hand, the score line may be rounded off in a section in the area of the elevation (s), but it may also be flat.

Ein weiterer Aspekt der vorliegenden Erfindung betrifft ein flächiges Material mit zumindest einer Rillung umfassend einen ersten Bereich mit einer ersten Rilltiefe und zumindest einen zweiten Bereich mit einer zweiten Rilltiefe, wobei die zweite Rilltiefe geringer ist als die erste Rilltiefe und der zweite Bereich ein Endbereich der Rillung ist.Another aspect of the present invention relates to a sheet material having at least one groove comprising a first region having a first groove depth and at least a second region having a second groove depth, the second groove depth being less than the first groove depth and the second region being an end region of the groove is.

Ein solches flächiges Material kann dadurch hergestellt werden, indem ein wie oben beschriebenes Rillwerkzeug in die Oberfläche des flächigen Materials eingedrückt wird. Wie auch schon oben beschrieben, hat die gegenüber der ersten Rilltiefe geringere zweite Rilltiefe eine "Spannungsentlastung" der Endbereiche der Rillung zur Folge, was letzendlich ein Aufplatzen oder Einreißen des Materials an den Endbereichen der Rillung wirksam verhindert.Such a sheet material can be produced by pressing a grooving tool as described above into the surface of the sheet material. As already described above, the second groove depth, which is lower than the first groove depth, results in a "stress relief" of the end regions of the groove, which ultimately effectively prevents the material from bursting or tearing at the end regions of the groove.

Gemäß der vorliegenden Erfindung kann das Material insbesondere ein Bahn- oder Bogenmaterial sein, wobei gemäß der vorliegenden Erfindung insbesondere ein formstabiles Material und im Speziellen Papier, Karton, Vollpappe oder Wellpappe verwendet werden kann. Es ist jedoch ebenso der Einsatz jedes beliebigen Kunststoffes vorstellbar, der gemäß der vorliegenden Erfindung mit einer Rillung versehen werden soll.In particular, according to the present invention, the material may be a sheet or sheet material, and according to the present invention, in particular a dimensionally stable material, and in particular paper, cardboard, solid board or corrugated cardboard may be used. However, it is also conceivable the use of any plastic to be provided according to the present invention with a grooving.

Die Rillung kann gemäß der vorliegenden Erfindung ein Faltkanal sein, an welchem das flächige Material umgebogen wird.The scoring may be according to the present invention, a folding channel, on which the sheet material is bent.

Gemäß der vorliegenden Erfindung ist es wichtig, dass sich die Rilltiefe des zweiten Bereichs zum Ende der Rillung hin verringert. Eine über den Verlauf der Rillung stete Verringerung ist hierbei vorteilhaft, wobei insbesondere eine Verringerung der Rilltiefe von der ersten Rilltiefe ausgehend zu null als vorteilhaft erachtet wird. Allerdings ist jede allmähliche Verringerung denkbar, solange keine schlagartige Zunahme von "keiner Deformation" zu "maximaler Deformation" stattfindet.According to the present invention, it is important that the groove depth of the second region decreases toward the end of the groove. A constant reduction over the course of the scoring is advantageous in this case, with a reduction of the scoring depth from the first scoring depth to zero being considered to be advantageous in particular. However, any gradual reduction is conceivable unless there is a sudden increase from "no deformation" to "maximum deformation".

Das oben beschriebene erfindungsgemäße flächige Material kann besonders gut geknickt oder umgefaltet werden, ohne dass es zu Aufplatzungen oder Aufreißungen im Bereich der Rillungen kommt. Es eignet sich also auch besonders dafür, um daraus Aufnahmebehältnisse, insbesondere Schachteln oder im Speziellen Zigarettenpackungen herzustellen.The flat material according to the invention described above can be bent or folded over particularly well, without causing any bursting or tearing comes in the field of creases. It is thus also particularly suitable for producing receptacles, in particular boxes or in particular cigarette packs.

Im Folgenden soll die vorliegende Erfindung anhand von Ausführungsbeispielen näher beschrieben werden. Die vorliegende Erfindung kann die hierin beschriebenen Merkmale einzeln sowie in jedweder sinnvollen Kombination umfassen. Es zeigen:

Figur 1a
Aufriss einer bevorzugten Ausführungsform des erfindungsgemäßen Rillwerkzeugs,
Figur 1 b
Seitenriss des erfindungsgemäßen Rillwerkzeugs aus Figur 1a,
Figur 1c
Grundriss des erfindungsgemäßen Rillwerkzeugs aus Figur 1a,
Figur 2
Aufriss einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen Rillwerkzeugs,
Figur 3a
nach dem Stand der Technik bearbeitete flächige Materialbahn, und
Figur 3b
nach der vorliegenden Erfindung bearbeitete flächige Materialbahn.
In the following, the present invention will be described in more detail by means of exemplary embodiments. The present invention may include the features described herein individually and in any convenient combination. Show it:
FIG. 1a
Elevation of a preferred embodiment of the scoring tool according to the invention,
Figure 1 b
Side elevation of the scoring tool according to the invention FIG. 1a .
Figure 1c
Floor plan of the scoring tool according to the invention FIG. 1a .
FIG. 2
Elevation of another preferred embodiment of the scoring tool according to the invention,
FIG. 3a
according to the prior art processed flat material web, and
FIG. 3b
according to the present invention processed flat material web.

In den Figuren 1a bis 1c ist eine erste Ausführungsform des erfindungsgemäßen Rillwerkzeugs zu sehen. Dieses umfasst einen Grundkörper 1, der an seiner Unterseite eine Rillinie 2 aufweist. Diese Rilllinie 2 ist im Bereich beider Stirnseiten 3 zu beiden Stirnseiten 3 hin angefast und hebt sich somit vom zwischen den Anfasungen liegenden geradlinigen Bereich der Rilllinie 2 ab, wobei die Fasen mit den geradlinigen Bereichen der Rilllinie 2 einen Winkel α einschließen. Es ist nicht erforderlich, dass beide Anfasungen den gleichen Winkel einschließen, vielmehr ist es denkbar, dass verschiedene Anfasungen unterschiedliche Winkel einschließen.In the FIGS. 1a to 1c shows a first embodiment of the scoring tool according to the invention. This comprises a main body 1, which has a score line 2 on its underside. This score line 2 is chamfered in the region of both end faces 3 to both end faces 3 and thus stands out from lying between the chamfers straight line of the score line 2, wherein the chamfers with the rectilinear portions of the score line 2 form an angle α. It is not necessary for both chamfers to include the same angle, but it is conceivable that different chamfers may include different angles.

In der Figur 1b ist ein Seitenriss des Rillwerkzeugs aus der Figur 1a zu sehen, wobei die Rilllinie 2 im Querschnitt abgerundet ist. Es ist gut zu sehen, dass die Rilllinie im Bereich der Anfasungen eine gerade stumpfe Unterkante aufweist, während sie im Bereich zwischen den Anfasungen abgerundet ist.In the FIG. 1b is a side elevation of the scoring tool from the FIG. 1a to see, with the score line 2 is rounded in cross section. It is good to see that the crease line in the area of the chamfers has a straight blunt lower edge, while it is rounded in the area between the chamfers.

In der Figur 1c ist ein Grundriss des erfindungsgemäßen Rillwerkzeugs zu sehen, wobei zu beiden Stirnseiten des Rillwerkzeugs hin ellipsenförmige Kanten gezeigt sind, welche nach Art eines Zylinderschnitts durch eine schlichte Anfasung der abgerundeten Rilllinie 2 entstehen.In the Figure 1c is a plan view of the scoring tool according to the invention to see, being shown on both end faces of the scoring tool towards elliptical edges, which arise in the manner of a cylindrical section through a simple chamfering of the rounded score line 2.

In der Figur 2 ist ein Bereich einer zweiten Ausführungsform des erfindungsgemäßen Rillwerkzeugs zu sehen, wobei die Anhebung zu einer Stirnseite 3 hin durch einen Radius r gebildet wird. Vorteilhafterweise wird beim Einprägen eines solchen Rillwerkzeugs in ein Material ein besonders weicher Verlauf der Einprägung erzeugt und damit Kerbspannungen vermieden.In the FIG. 2 is an area of a second embodiment of the scoring tool according to the invention to see, with the increase is formed to a front side 3 through a radius r. Advantageously, when embossing such a scoring tool into a material, a particularly smooth course of the embossing is produced and thus notch stresses are avoided.

Die Rilllinie 2 kann gemäß der Ausführungsform aus der Figur 2 im Bereich der Anhebung 4 im Querschnitt sowohl abgerundet als auch stumpf sein, wobei auch jede andere geeignete Form der Rilllinie denkbar ist.The score line 2 can according to the embodiment of the FIG. 2 be both rounded and dull in cross-section 4 in cross-section, with any other suitable form of crease line is conceivable.

In der Figur 3a ist eine Materialbahn zu sehen, welche eine gemäß dem Stand der Technik eingeprägte Rillung 5 aufweist. Diese Rillung wird durch Einprägen eines aus dem Stand der Technik bekannten Rillwerkzeugs (Auf- und Seitenriss links in der Figur 3a zu sehen) ausgebildet, wobei zwischen Rilllinie und Stirnfläche des Rillwerkzeugs ein 90°-Winkel ausgebildet ist. Es ist offensichtlich, dass im Endbereich der Rillung 5 sehr hohe Kerbspannungen im Material auftreten, da die Deformation ausgehend von keiner Deformation im Umfeld der Rillung zu maximaler Deformation im Endbereich der Rillung sprunghaft ihr Maximum erreicht.In the FIG. 3a is a material web to see, which has an embossed according to the prior art groove 5. This grooving is done by impressing a known from the prior art scoring tool (side and side elevation left in FIG. 3a formed), wherein between crease line and end face of the creasing tool, a 90 ° angle is formed. It is obvious that 5 very high notch stresses occur in the material in the end region of the grooving, since the deformation suddenly reaches its maximum, starting from no deformation in the vicinity of the grooving to maximum deformation in the end region of the grooving.

Im Gegensatz hierzu ist in der Figur 3b eine Materialbahn mit einer gemäß der vorliegenden Erfindung (Auf- und Seitenriss eines solchen Werkzeugs links in der Figur 3b zu sehen) eingeprägten Rillung 5 gezeigt. Diese Rillung weist einen ersten Bereich 6 mit einer ersten konstanten Rilltiefe und einen zweiten Rillbereich 7 mit einer zweiten Rilltiefe auf, wobei die Rilltiefe im zweiten Bereich 7 von der ersten Rilltiefe ausgehend zum Ende der Rillung 5 hin stetig verringert wird. Auf dieseIn contrast, in the FIG. 3b a web of material according to the present invention (side and side elevation of such a tool left in the FIG. 3b to see) engraved groove 5 shown. This groove has a first region 6 with a first constant groove depth and a second groove region 7 with a second groove depth, whereby the groove depth in the second region 7 is continuously reduced from the first groove depth to the end of the groove 5. To this

Weise wird ein sprunghafter Anstieg der Deformation im Material vermieden, so dass schädliche Kerbspannungen von Anfang an vermieden werden können. 1 Rillwerkzeug 2 Rilllinie 3 Stirnseite 4 Anhebung 5 Rillung 6 Rillung mit erster Prägetiefe 7 Rillung mit zweiter Prägetiefe In this way, a sudden increase in the deformation in the material is avoided so that harmful notch stresses can be avoided from the start. 1 Creasing 2 grooved line 3 front 4 increase 5 creasing 6 Grooving with first embossing depth 7 Grooving with second embossing depth

Claims (16)

  1. A creasing tool for impressing a groove into a planar material, comprising a base body (1) which exhibits a linear creasing line (2), wherein the creasing line (2) is raised towards a front side (3) of the base body (1) in a region (4) attached to the front side (3) and, aside from this region (4), extends at least partially in a straight line for a constant groove depth.
  2. The creasing tool according to Claim 1, comprising a flat, in particular strip-like base body (1), specifically a steel band knife, as the base body (1).
  3. The creasing tool according to any one of Claims 1 or 2, wherein the creasing line (2) exhibits a smaller thickness than the base body (1).
  4. The creasing tool according to any one of Claims 1 to 3, wherein the creasing line (2) is obtuse and in particular rounded in cross-section.
  5. The creasing tool according to any one of Claims 1 to 4, wherein the two front sides (3) of the base body (1) are each attached to a region (4) in which the creasing line (2) is raised towards the respective front side (3).
  6. The creasing tool according to Claim 5, wherein aside from the regions (4), the creasing line (2) extends at least partially, in particular substantially, specifically only in a straight line.
  7. The creasing tool according to any one of Claims 1 to 6, wherein the creasing line (2) is chamfered towards the front side(s) (3) in the region(s) (4), and wherein the chamfer(s) endoses/enclose an angle (α) in the range of 3° to 45°, in particular 5° to 30°, specifically 10° to 15° with the linear regions of the creasing line.
  8. The creasing tool according to any one of Claims 1 to 6, wherein the creasing line (2) is rounded towards the front side(s) (3) in the region(s) (4).
  9. The creasing tool according to any one of Claims 1 to 8, wherein the creasing line (2) is rounded or flat in cross-section in the region(s) (4).
  10. A planar material comprising at least one groove (5) including a first region (6) having a first groove depth and at least a second region (7) having a second groove depth, wherein the second groove depth is smaller than the first groove depth, and the second region is an end region of the groove (5).
  11. The planar material according to Claim 10, wherein the material is a web material or sheet material, in particular a dimensionally stable material, specifically paper, card, solid cardboard or corrugated cardboard.
  12. The planar material according to any one of Claims 10 or 11, wherein the groove (5) is a creased channel at which the planar material is bent around.
  13. The planar material according to any one of Claims 10 to 12, wherein the groove depth of the second region (7) lessens towards the end of the groove (5) and in particular lessens to zero starting from the first groove depth.
  14. The planar material according to any one of Claims 10 to 13, wherein the groove depth of the first region (6) is substantially constant.
  15. The planar material according to any one of Claims 10 to 14, manufactured by pressing a creasing tool according to any one of Claims 1 to 9 into the surface of the planar material.
  16. A storage container, in particular a packet, specifically a cigarette packet, comprising a planar material according to any one of Claims 10 to 15.
EP11159209.3A 2010-04-19 2011-03-22 Creasing tool Active EP2377678B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11159209T PL2377678T3 (en) 2010-04-19 2011-03-22 Creasing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202010005748U DE202010005748U1 (en) 2010-04-19 2010-04-19 Creasing

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Publication Number Publication Date
EP2377678A1 EP2377678A1 (en) 2011-10-19
EP2377678B1 true EP2377678B1 (en) 2013-05-08

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ID=44320302

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EP11159209.3A Active EP2377678B1 (en) 2010-04-19 2011-03-22 Creasing tool

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EP (1) EP2377678B1 (en)
DE (1) DE202010005748U1 (en)
PL (1) PL2377678T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015011399B4 (en) 2015-08-31 2020-01-23 G. Kraft Maschinenbau Gmbh Device and method for scoring, perforating, cutting and scoring flat elements
DE202015006139U1 (en) 2015-08-31 2015-10-15 G. Kraft Maschinenbau Gmbh Device for scoring, perforating, cutting and scoring flat objects

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1389283A (en) * 1972-03-21 1975-04-03 Paper Board Printing Res Ass Book covers and method and apparatus for producing them
US5302435A (en) * 1992-03-24 1994-04-12 Mitsubishi Plastics Industries Limited Plastic sheet with a ruled line for bending
US5194064A (en) * 1992-07-27 1993-03-16 Container Graphics Corporation Creasing rule for rotary die apparatus
DE4237795A1 (en) * 1992-11-09 1994-05-11 Johnson & Johnson Gmbh Packaging material with at least one line of weakness and method and device for producing the same
DE29605073U1 (en) * 1996-03-19 1996-05-23 Essmann & Schaefer GmbH & Co. KG., 42369 Wuppertal Creasing tool for embossing folding grooves on foldable materials
DE19924187A1 (en) * 1998-10-23 2000-04-27 Reiner Wagner Curved sections for the production of folded boxes, are produced by forming a groove along at least one threshold section of a kinked curved material
JP2001121623A (en) * 1999-10-27 2001-05-08 Asahi Kogyo Kk Ruled plastic sheet, rule blade and packaging vessel made of ruled plastic sheet
JP2002036398A (en) * 2000-07-24 2002-02-05 Sueo Akama Mold for fold applying apparatus and fold applying apparatus

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Publication number Publication date
EP2377678A1 (en) 2011-10-19
DE202010005748U1 (en) 2011-09-02
PL2377678T3 (en) 2013-10-31

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