EP3341299B1 - Glue roller - Google Patents

Glue roller Download PDF

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Publication number
EP3341299B1
EP3341299B1 EP16733484.6A EP16733484A EP3341299B1 EP 3341299 B1 EP3341299 B1 EP 3341299B1 EP 16733484 A EP16733484 A EP 16733484A EP 3341299 B1 EP3341299 B1 EP 3341299B1
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EP
European Patent Office
Prior art keywords
glue roller
depressions
glue
roller according
equal
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EP16733484.6A
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German (de)
French (fr)
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EP3341299A1 (en
Inventor
Soeren Meissner
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Krones AG
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Krones AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/20—Gluing the labels or articles
    • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
    • B65C9/2247—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating using liquid rollers or bands
    • B65C9/2256—Applying the liquid on the label
    • B65C9/2265—Applying the liquid on the label continuously, i.e. an uninterrupted film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0808—Details thereof, e.g. surface characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/20—Gluing the labels or articles
    • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
    • B65C9/2247—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating using liquid rollers or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C2009/0071—Details of glueing devices
    • B65C2009/0075—Constructional details of glueing rollers

Definitions

  • the invention relates to a glue roller for applying glue to labels, label tapes and/or containers in a labeling device.
  • Containers are often provided with labels or foils as identification, with the labels being applied to the containers by means of labeling devices using adhesive or glue.
  • a glue roller can pick up glue and apply it to labels.
  • the surface of the glue roller is structured, for example has indentations.
  • the DE 10 2010 000 182 A1 shows a glue roller for applying glue to labels according to the preamble of claim 1, wherein the glue roller has a plurality of indentations formed on the lateral surface.
  • CSD products Carbonated Soft Drink
  • the surface of the glue roller has a plurality of indentations each in the form of a hexagon, the side walls of the hexagon having an inclination of 110° to 140°, preferably 120°, relative to the surface of the glue roller.
  • the hexagonal shape in combination with the inclination of the side walls means that larger amounts of glue can be absorbed by the glue roller and without
  • the glue roller is preferably designed in the form of a cylinder or hollow cylinder and is arranged such that it can rotate about the cylinder axis.
  • the glue roller is usually part of a gluing unit in which glue is heated if necessary and in which glue is applied to the glue roller, for example with a glue scraper.
  • the size of the glue roller depends on the application, i.e. it is matched to the size of the objects to be glued.
  • the hexagonal shape of the indentations refers to the unrolled cylindrical surface of the glue roller.
  • All depressions can have the same side length and/or the same depth and/or the same slope of the side walls.
  • the side length is measured at the top edge, i.e. at the level of the non-recessed surface of the glue roller.
  • the recesses can also make sense to design the recesses to be geometrically different, for example depending on where they are arranged on the glue roller.
  • the indentations may be arranged such that an edge of each of the indentations and an edge of each adjacent indentation are arranged in parallel. Thus, a large amount of indentations can be evenly arranged on the glue roller surface. This can apply in particular to adjacent edges of adjacent depressions.
  • the depressions can be arranged equidistantly from one another.
  • Equidistant here refers to the distances between the centers of adjacent wells.
  • the indentations may be equidistant along a first axis, for example circumferentially around the glue roller or along the width of the glue roller, at a first spacing and equidistant along a second axis at a second spacing.
  • the first and second distances can be the same, especially for regular hexagons.
  • the first and the second distance can be different, in particular if all sides of a hexagon are not of the same length.
  • the indentations can be arranged around the entire circumference of the glue roller. This makes it possible for the glue roller to be suitable for accommodating large quantities of glue over its entire circumference, and therefore particularly suitable for continuous operation.
  • the depressions can be arranged over the entire width of the glue roller.
  • the glue roller can be suitable over its entire width for taking up large quantities of glue. This allows containers of different sizes to be glued, especially large containers.
  • edges and/or corners of the indentations can be rounded. This can prevent sharp corners or edges from damaging the labels and preventing glue from accumulating or reducing the amount of glue at the corners and edges.
  • the depressions can have a uniform depth. In this way, the amount of glue can be even in the entire recess and a good glue pattern can be achieved.
  • the side length of the depressions can be between 0.2 mm and 0.35 mm, in particular between 0.24 mm and 0.29 mm, preferably 0.26 mm. These side lengths have proven to be a particularly advantageous size since a good glue pattern can be produced in this way.
  • the indentations can have a depth of 0.04 mm to 0.125 mm, in particular 0.04 mm to 0.06 mm, in particular 0.045 mm to 0.055 mm, preferably 0.05 mm. These depths have proven to be particularly advantageous since the desired large amount of glue can be transferred and a good glue pattern can be produced.
  • the distance between adjacent depressions can be between 0.4 mm and 0.8 mm, in particular between 0.5 mm and 0.7 mm, preferably 0.6 mm.
  • spacing refers to the distances between the centers of the indentations. This distance has proven to be particularly advantageous for the glue pattern and the amount of glue transferred. Said distance enables, in particular in combination with the above-mentioned side lengths, a suitable ratio between indentations and the rest of the glue roller surface (in an area where the indentations are arranged).
  • the web width between the indentations can be between 0.07 mm and 0.13 mm, preferably 0.1 mm.
  • the web is the non-depressed glue roller surface between two adjacent depressions.
  • the land width is therefore the (possibly shortest) distance between the adjacent upper edges of two adjacent indentations. This web width has proven to be advantageous for the glue pattern and the amount of glue transferred.
  • No indentations can be arranged at a distance of 1 cm to 2 cm, in particular 1.5 cm, from the sides of the glue roller. This can be advantageous, since little glue is then taken up by the glue roller at points on the glue roller that are not used for gluing. This saves glue and can also reduce dirt caused by running glue.
  • the proportion of pressing surface can be 30% to 35%, preferably 32%. Pressing surfaces are the surfaces that are not recessed and press against the label or label strip to be glued or the container to be glued during operation. This proportion of pressing surface has proven to be particularly advantageous for the glue pattern and the amount of glue transferred.
  • Each interior angle of the hexagon can be greater than or equal to 100° and less than or equal to 150°, in particular less than or equal to 140° and greater than 110°, in particular less than or equal to 135° and greater than or equal to 115°, in particular less than or equal to 130° and greater or be equal to 120°.
  • the interior angle denotes an angle that is enclosed by adjacent polygon sides. The interior angles mentioned above lead to a better glue pattern.
  • Each indentation may be formed so that opposite edges are parallel. This simplifies the manufacture and arrangement of the indentations on the glue roller.
  • Each indentation may be formed in the shape of a regular hexagon.
  • all interior angles are 120° and all sides of the hexagon are equal. This form is very easy to manufacture and suitable for a dense and regular arrangement on the glue roller.
  • all interior angles are at a particularly preferred value.
  • FIG 1 a glue roller is shown in a labeling device.
  • the labeling device 1 shown here in simplified form includes, in addition to the glue roller 2, which is part of a gluing unit 3 here, a rotatable cylinder 4, from which a label strip 5 is unrolled, a cutting cylinder 6, on which labels are separated from the label strip by a cutting tool 7 presses against the cutting cylinder, and transports a transport cylinder 8, which takes over the labels from the cutting cylinder, to the containers 9 and applies them to them.
  • the glue roller does not have to be part of a glue unit.
  • the labeling device is purely exemplary and can be designed in any other way, for example in such a way that the glue is applied to a label strip or to containers that can be brought into contact with the glue roller in a suitable way.
  • the containers, labels or label tape can be transported to the glue roller linearly or on a rotary conveyor.
  • the glue roller can be arranged such that it can be moved, for example pivoted or moved, so that it can be brought into contact with the labels, containers or label strips.
  • figure 2 shows the unrolled surface 10 of a glue roller in plan view with a multiplicity of hexagonal indentations 11.
  • the indentations are arranged at a minimum distance 12 from the edge of the cylinder surface in relation to the width 13 of the glue roller.
  • indentations are arranged along the entire circumference 14 .
  • figure 3 shows a section through a plane 15 parallel to the axis of rotation perpendicular to the glue roller surface.
  • the spacing 16 between adjacent dimples is shown as the spacing of the centers of the dimples.
  • the indentations are arranged equidistantly in the direction shown, but this need not be the case.
  • the depth 17 of the depressions is also shown. Here the indentations are of uniform depth, but this need not be the case.
  • the side walls 18 of the depressions can also be seen and its angle of inclination 19 of 120° to the surface of the glue roller. Also shown are the ridges 20 between the indentations.
  • figure 4 shows a detailed plan view of a surface of a glue roller.
  • the distance 16 between the centers of adjacent depressions is also shown here.
  • the web width 21, a first side length 22, a second side length 23, a first interior angle 24 and a second interior angle 25 are also shown.
  • the first and second side lengths are different, and the first and second interior angles are different. But this does not have to be the case.
  • it can also be a regular hexagon with the same side lengths and interior angles.
  • the land width between the three indentations is the same, but this need not be the case.
  • adjacent edges of adjacent depressions are parallel here, but this does not have to be the case either.
  • approximately 400,000 to 500,000 hexagonal depressions can be arranged on a lateral surface of approximately 1200 cm 2 .
  • a typical density of depressions (based on the cylinder surface) can be around 350/m 2 .
  • the side length of the edges can be 0.29 mm (for example the first edge length 22) on two opposite sides and 0.24 mm (for example the second edge length 23) on the other sides.
  • the depth can be 0.05 mm, for example, and the web width 0.1 mm.
  • the angle of the side walls can be 120° and the pressing area can be about 32%.
  • the interstitial volume is then about 30.5 ml/m 2 .
  • the sum of the figures in the axial direction can be, for example, about 1000 and in the radial direction about 400 to 500.

Description

Die Erfindung betrifft eine Leimwalze zum Auftragen von Leim auf Etiketten, Etikettenbänder und/oder Behälter in einer Etikettiervorrichtung.The invention relates to a glue roller for applying glue to labels, label tapes and/or containers in a labeling device.

Behälter werden häufig mit Etiketten oder Folien als Kennzeichnung versehen, wobei die Etiketten mittels Etikettiervorrichtungen unter Verwendung von Klebstoff bzw. Leim auf die Behälter aufgebracht werden. Dazu kann eine Leimwalze Leim aufnehmen und auf Etiketten aufbringen. Es ist auch bekannt, dass die Oberfläche der Leimwalze strukturiert ist, beispielsweise Vertiefungen aufweist. Die DE 10 2010 000 182 A1 zeigt eine Leimwalze zum Auftragen von Leim auf Etiketten gemäß dem Oberbegriff des Anspruchs 1, wobei die Leimwalze mehrere an der Mantelfläche ausgebildete Vertiefungen aufweist. Für manche Anwendungen ist es wünschenswert eine große Menge Leim aufzubringen, damit die Etiketten sicher an den Behältern haften bleiben. Gerade bei CSD-Produkten (Carbonated Soft Drink) mit hoher Behälterausdehnung kommt es leicht zum Verlust des Etiketts. Dies kann verhindert werden, indem zum Befestigen der Etiketten größere Mengen Leim verwendet werden. Aus dem Stand der Technik ist bekannt, zum Erhöhen der Leimmenge mit einem verstellbaren Leimschaber die Menge an Leim, die mit dem Leimschaber auf die Leimwalze aufgebracht wird, einzustellen. Es zeigt sich jedoch, dass es dadurch zu erhöhter Verschmutzung der Maschine kommen kann. Zudem gibt es keine Lösung für Maschinen mit fest montierten (nicht verstellbaren) Leimschabern.Containers are often provided with labels or foils as identification, with the labels being applied to the containers by means of labeling devices using adhesive or glue. A glue roller can pick up glue and apply it to labels. It is also known that the surface of the glue roller is structured, for example has indentations. the DE 10 2010 000 182 A1 shows a glue roller for applying glue to labels according to the preamble of claim 1, wherein the glue roller has a plurality of indentations formed on the lateral surface. For some applications it is desirable to apply a large amount of glue to keep the labels securely attached to the containers. Especially with CSD products (Carbonated Soft Drink) with large container dimensions, it is easy to lose the label. This can be avoided by using larger amounts of glue to attach the labels. It is known from the prior art to use an adjustable glue scraper to adjust the amount of glue that is applied to the glue roller with the glue scraper in order to increase the amount of glue. However, it has been shown that this can lead to increased soiling of the machine. In addition, there is no solution for machines with fixed (non-adjustable) glue scrapers.

Der Nachteil der bisher bekannten Vorrichtungen besteht also darin, dass es für Maschinen, bei denen nicht eingestellt werden kann, wie viel Leim auf die Leimwalze abgegeben wird, kein hoher Leimübertrag möglich ist, und bei Maschinen, bei denen die Leimmenge, die auf die Leimwalze abgegeben wird, erhöht werden kann, Verschmutzungen auftreten können.The disadvantage of the previously known devices is that it is not possible for machines in which it is not possible to set how much glue is dispensed onto the glue roller, and for machines in which the amount of glue that is applied to the glue roller is released, can be increased, contamination can occur.

Es ist also Aufgabe der Erfindung, eine Leimwalze zur Verfügung zu stellen, die unabhängig von der Art der Etikettiervorrichtung einen hohen Leimübertrag ermöglicht, ohne die Verschmutzung der Etikettiervorrichtung zu erhöhen.It is therefore the object of the invention to provide a glue roller which, regardless of the type of labeling device, enables a high transfer of glue without increasing the contamination of the labeling device.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Oberfläche der Leimwalze mehrere Vertiefungen jeweils in Form eines Hexagons aufweist, wobei die Seitenwände des Hexagons bezogen auf die Oberfläche der Leimwalze eine Neigung von 110° bis 140°, bevorzugt 120°, aufweisen.This object is achieved according to the invention in that the surface of the glue roller has a plurality of indentations each in the form of a hexagon, the side walls of the hexagon having an inclination of 110° to 140°, preferably 120°, relative to the surface of the glue roller.

Die hexagonale Form in Kombination mit der Neigung der Seitenwände führt dazu, dass auch größere Mengen Leim von der Leimwalze aufgenommen und ohneThe hexagonal shape in combination with the inclination of the side walls means that larger amounts of glue can be absorbed by the glue roller and without

Maschinenverschmutzung auf Etiketten abgegeben werden können. In Vergleichsversuchen hat sich ergeben, dass die Leimmenge (in mg/mm2) im Vergleich zu bekannten Leimwalzen etwa verdoppelt werden kann, ohne die Verschmutzung zu erhöhen. Zudem zeigt sich, dass ein vorgegebenes Leimbild auf dem Etikett zuverlässig erzeugt werden kann.Machine contamination can be given on labels. Comparative tests have shown that the amount of glue (in mg/mm 2 ) can be roughly doubled compared to known glue rollers without increasing the level of soiling. It also shows that a specified glue pattern can be reliably generated on the label.

Die Leimwalze ist vorzugsweise in Form eines Zylinders oder Hohlzylinders ausgebildet und um die Zylinderachse rotierbar angeordnet. Die Leimwalze ist zumeist Teil eines Leimwerks, in dem Leim wenn nötig erhitzt und in dem Leim auf die Leimwalze aufgebracht wird, beispielsweise mit einem Leimschaber. Die Größe der Leimwalze hängt vom Anwendungsfall ab, das heißt, sie ist auf die Größe der zu beleimenden Objekte abgestimmt.The glue roller is preferably designed in the form of a cylinder or hollow cylinder and is arranged such that it can rotate about the cylinder axis. The glue roller is usually part of a gluing unit in which glue is heated if necessary and in which glue is applied to the glue roller, for example with a glue scraper. The size of the glue roller depends on the application, i.e. it is matched to the size of the objects to be glued.

Die hexagonale Form der Vertiefungen bezieht sich auf die abgerollte Zylinderfläche der Leimwalze.The hexagonal shape of the indentations refers to the unrolled cylindrical surface of the glue roller.

Alle Vertiefungen können die gleiche Seitenlänge und/oder die gleiche Tiefe und/oder die gleiche Neigung der Seitenwände aufweisen. Je ähnlicher sich die einzelnen Vertiefungen sind, desto gleichmäßiger kann Leim übertragen werden. Dies gilt vor allem, wenn Leim gleichmäßig auf die Leimwalze abgegeben werden kann. Außerdem ist es so einfacher, eine große Menge Vertiefungen gleichmäßig auf der Leimwalzenoberfläche anzuordnen. Die Seitenlänge wird dabei an der Oberkante, also auf Höhe der nicht-vertieften Oberfläche der Leimwalze gemessen.All depressions can have the same side length and/or the same depth and/or the same slope of the side walls. The more similar the individual indentations are, the more evenly glue can be transferred. This is especially true if glue can be dispensed evenly onto the glue roller. In addition, it is easier to evenly arrange a large number of indentations on the glue roller surface. The side length is measured at the top edge, i.e. at the level of the non-recessed surface of the glue roller.

Beispielsweise in Fällen, in denen der Leimauftrag auf die Leimwalze nicht gleichmäßig möglich ist, kann es aber auch sinnvoll sein, die Vertiefungen geometrisch unterschiedlich auszubilden, beispielsweise abhängig davon, wo auf der Leimwalze sie angeordnet sind.For example, in cases in which the application of glue to the glue roller is not possible evenly, it can also make sense to design the recesses to be geometrically different, for example depending on where they are arranged on the glue roller.

Die Vertiefungen können derart angeordnet sein, dass jeweils eine Kante jeder der Vertiefungen und eine Kante jeder benachbarten Vertiefung parallel angeordnet sind. So kann eine große Menge an Vertiefungen gleichmäßig auf der Leimwalzenoberfläche angeordnet werden. Dies kann insbesondere für benachbarte Kanten benachbarter Vertiefungen gelten.The indentations may be arranged such that an edge of each of the indentations and an edge of each adjacent indentation are arranged in parallel. Thus, a large amount of indentations can be evenly arranged on the glue roller surface. This can apply in particular to adjacent edges of adjacent depressions.

Die Vertiefungen können äquidistant zueinander angeordnet sein. Äquidistant bezieht sich hier auf die Abstände zwischen den Mittelpunkten benachbarter Vertiefungen. Die Vertiefungen können entlang einer ersten Achse, beispielsweise umfänglich um die Leimwalze oder entlang der Breite der Leimwalze, mit einem ersten Abstand äquidistant und entlang einer zweiten Achse mit einem zweiten Abstand äquidistant angeordnet sein. Der erste und der zweite Abstand können gleich sein, insbesondere bei regulären Hexagonen.The depressions can be arranged equidistantly from one another. Equidistant here refers to the distances between the centers of adjacent wells. The indentations may be equidistant along a first axis, for example circumferentially around the glue roller or along the width of the glue roller, at a first spacing and equidistant along a second axis at a second spacing. The first and second distances can be the same, especially for regular hexagons.

Alternativ können der erste und der zweite Abstand unterschiedlich sein, insbesondere wenn nicht alle Seiten eines Hexagons gleich lang sind.Alternatively, the first and the second distance can be different, in particular if all sides of a hexagon are not of the same length.

Die Vertiefungen können um den gesamten Umfang der Leimwalze angeordnet sein. Dies ermöglicht, dass die Leimwalze auf ihrem gesamten Umfang zum Aufnehmen auch großer Mengen Leim, und somit besonders gut zum kontinuierlichen Betrieb, geeignet ist.The indentations can be arranged around the entire circumference of the glue roller. This makes it possible for the glue roller to be suitable for accommodating large quantities of glue over its entire circumference, and therefore particularly suitable for continuous operation.

Die Vertiefungen können über die gesamte Breite der Leimwalze angeordnet sein. Dadurch kann die Leimwalze auf ihrer gesamten Breite zum Aufnehmen großer Mengen Leim geeignet sein. Dies ermöglicht, dass Behälter verschiedener Größen mit Leim versehen werden können, besonders auch große Behälter.The depressions can be arranged over the entire width of the glue roller. As a result, the glue roller can be suitable over its entire width for taking up large quantities of glue. This allows containers of different sizes to be glued, especially large containers.

Die Kanten und/oder Ecken der Vertiefungen können abgerundet sein. Dies kann gegebenenfalls verhindern, dass scharfe Ecken oder Kanten die Etiketten beschädigen und dass sich an den Ecken und Kanten Leim ansammelt oder dort die Leimmenge reduziert ist.The edges and/or corners of the indentations can be rounded. This can prevent sharp corners or edges from damaging the labels and preventing glue from accumulating or reducing the amount of glue at the corners and edges.

Die Vertiefungen können, abgesehen von den Seitenwänden, eine gleichmäßige Tiefe aufweisen. So kann die Leimmenge in der gesamten Vertiefung gleichmäßig sein und ein gutes Leimbild ermöglicht werden.Except for the side walls, the depressions can have a uniform depth. In this way, the amount of glue can be even in the entire recess and a good glue pattern can be achieved.

Die Seitenlänge der Vertiefungen kann jeweils zwischen 0,2 mm und 0,35 mm, insbesondere zwischen 0,24 mm und 0,29 mm, vorzugsweise 0,26 mm betragen. Diese Seitenlängen haben sich als eine besonders vorteilhafte Größe gezeigt, da so ein gutes Leimbild erzeugt werden kann.The side length of the depressions can be between 0.2 mm and 0.35 mm, in particular between 0.24 mm and 0.29 mm, preferably 0.26 mm. These side lengths have proven to be a particularly advantageous size since a good glue pattern can be produced in this way.

Die Vertiefungen können eine Tiefe von 0,04 mm bis 0,125 mm, insbesondere von 0,04 mm bis 0,06 mm, insbesondere von 0,045 mm bis 0,055 mm, bevorzugt 0,05 mm aufweisen. Diese Tiefen haben sich als besonders vorteilhaft gezeigt, da so die gewünschte hohe Leimmenge übertragen werden kann und ein gutes Leimbild erzeugt werden kann.The indentations can have a depth of 0.04 mm to 0.125 mm, in particular 0.04 mm to 0.06 mm, in particular 0.045 mm to 0.055 mm, preferably 0.05 mm. These depths have proven to be particularly advantageous since the desired large amount of glue can be transferred and a good glue pattern can be produced.

Der Abstand zwischen benachbarten Vertiefungen kann zwischen 0,4 mm und 0,8 mm, insbesondere zwischen 0,5 mm und 0,7 mm, vorzugsweise bei 0,6 mm liegen. Der Abstand bezieht sich, wie oben bereits erwähnt, auf die Abstände zwischen den Mittelpunkten der Vertiefungen. Dieser Abstand hat sich als besonders vorteilhaft für das Leimbild und die übertragene Leimmenge erwiesen. Der besagte Abstand ermöglicht, insbesondere in Kombination mit den oben genannten Seitenlängen, ein geeignetes Verhältnis zwischen Vertiefungen und der übrigen Leimwalzenoberfläche (in einem Bereich, in dem die Vertiefungen angeordnet sind).The distance between adjacent depressions can be between 0.4 mm and 0.8 mm, in particular between 0.5 mm and 0.7 mm, preferably 0.6 mm. As mentioned above, spacing refers to the distances between the centers of the indentations. This distance has proven to be particularly advantageous for the glue pattern and the amount of glue transferred. Said distance enables, in particular in combination with the above-mentioned side lengths, a suitable ratio between indentations and the rest of the glue roller surface (in an area where the indentations are arranged).

Die Stegbreite zwischen den Vertiefungen kann zwischen 0,07 mm und 0,13 mm, vorzugsweise bei 0,1 mm liegt. Der Steg ist dabei die nicht-vertiefte Leimwalzenoberfläche zwischen zwei benachbarten Vertiefungen. Die Stegbreite ist also der (gegebenenfalls kürzeste) Abstand zwischen den benachbarten oberen Kanten zweier benachbarter Vertiefungen. Diese Stegbreite hat sich als vorteilhaft für das Leimbild und die übertragene Leimmenge erwiesen.The web width between the indentations can be between 0.07 mm and 0.13 mm, preferably 0.1 mm. The web is the non-depressed glue roller surface between two adjacent depressions. The land width is therefore the (possibly shortest) distance between the adjacent upper edges of two adjacent indentations. This web width has proven to be advantageous for the glue pattern and the amount of glue transferred.

In einem Abstand von 1 cm bis 2 cm, insbesondere 1,5 cm, von den Seiten der Leimwalze können keine Vertiefungen angeordnet sein. Dies kann vorteilhaft sein, da dann an Stellen der Leimwalze, die nicht zum Beleimen verwendet werden, auch wenig Leim von der Leimwalze aufgenommen wird. Das spart Leim und kann zudem Verschmutzung durch herablaufenden Leim reduzieren.No indentations can be arranged at a distance of 1 cm to 2 cm, in particular 1.5 cm, from the sides of the glue roller. This can be advantageous, since little glue is then taken up by the glue roller at points on the glue roller that are not used for gluing. This saves glue and can also reduce dirt caused by running glue.

Der Pressflächenanteil kann bei 30% bis 35%, vorzugsweise bei 32% liegen. Pressflächen sind dabei die Flächen, die nicht vertieft sind und im Betrieb gegen das zu beleimende Etikett oder Etikettenband oder den zu beleimenden Behälter drücken. Dieser Pressflächenanteil hat sich als besonders vorteilhaft für das Leimbild und die übertragene Leimmenge erwiesen.The proportion of pressing surface can be 30% to 35%, preferably 32%. Pressing surfaces are the surfaces that are not recessed and press against the label or label strip to be glued or the container to be glued during operation. This proportion of pressing surface has proven to be particularly advantageous for the glue pattern and the amount of glue transferred.

Jeder Innenwinkel des Hexagons kann größer oder gleich 100° und kleiner oder gleich 150°, insbesondere kleiner oder gleich 140° und größer als 110°, insbesondere kleiner oder gleich 135° und größer oder gleich 115°, insbesondere kleiner oder gleich 130° und größer oder gleich 120° sein. Der Innenwinkel bezeichnet einen Winkel, der von benachbarten Polygonseiten eingeschlossen wird. Die oben genannten Innenwinkel führen zu einem besseren Leimbild.Each interior angle of the hexagon can be greater than or equal to 100° and less than or equal to 150°, in particular less than or equal to 140° and greater than 110°, in particular less than or equal to 135° and greater than or equal to 115°, in particular less than or equal to 130° and greater or be equal to 120°. The interior angle denotes an angle that is enclosed by adjacent polygon sides. The interior angles mentioned above lead to a better glue pattern.

Jede Vertiefung kann so ausgebildet sein, dass gegenüberliegende Kanten parallel verlaufen. Dies vereinfacht die Herstellung und die Anordnung der Vertiefungen auf der Leimwalze.Each indentation may be formed so that opposite edges are parallel. This simplifies the manufacture and arrangement of the indentations on the glue roller.

Jede Vertiefung kann in Form eines regulären Hexagons ausgebildet sein. In diesem Fall betragen alle Innenwinkel 120° und alle Seiten des Hexagons sind gleich lang. Diese Form ist sehr einfach in der Herstellung und geeignet zu einer dichten und gleichmäßigen Anordnung auf der Leimwalze. Außerdem liegen alle Innenwinkel bei einem besonders bevorzugten Wert.Each indentation may be formed in the shape of a regular hexagon. In this case, all interior angles are 120° and all sides of the hexagon are equal. This form is very easy to manufacture and suitable for a dense and regular arrangement on the glue roller. In addition, all interior angles are at a particularly preferred value.

Weitere Merkmale und Vorteile werden nachfolgend anhand der beispielhaften Figuren erläutert. Dabei zeigt:

Figur 1
eine schematische, nicht maßstabsgetreue Darstellung einer Leimwalze in einer Etikettiervorrichtung in Draufsicht;
Figur 2
eine schematische, nicht maßstabsgetreue Draufsicht auf die abgerollte Zylinderfläche einer erfindungsgemäßen Leimwalze;
Figur 3
ein schematischer, nicht maßstabsgetreuer Schnitt durch eine Ebene parallel zur Zylinderachse der erfindungsgemäßen Leimwalze; und
Figur 4
eine schematische, nicht maßstabsgetreue Draufsicht auf Vertiefungen in der Oberfläche der Leimwalze.
Further features and advantages are explained below with reference to the exemplary figures. It shows:
figure 1
a schematic representation, not true to scale, of a glue roller in a labeling device in plan view;
figure 2
a schematic plan view, not true to scale, of the unrolled cylinder surface of a glue roller according to the invention;
figure 3
a schematic section, not true to scale, through a plane parallel to the cylinder axis of the glue roller according to the invention; and
figure 4
a schematic plan view, not to scale, of indentations in the surface of the glue roller.

In Figur 1 ist eine Leimwalze in einer Etikettiervorrichtung dargestellt.In figure 1 a glue roller is shown in a labeling device.

Die hier vereinfacht dargestellte Etikettiervorrichtung 1 umfasst neben der Leimwalze 2, die hier Teil eines Leimwerks 3 ist, einen rotierbaren Zylinder 4, von dem ein Etikettenband 5 abgerollt wird, einen Schneidzylinder 6, auf dem Etiketten aus dem Etikettenband vereinzelt werden, indem ein Schneidwerkzeug 7 gegen den Schneidzylinder drückt, und einen Transportzylinder 8, der die Etiketten vom Schneidzylinder übernimmt, zu den Behältern 9 weitertransportiert und auf diese aufbringt.The labeling device 1 shown here in simplified form includes, in addition to the glue roller 2, which is part of a gluing unit 3 here, a rotatable cylinder 4, from which a label strip 5 is unrolled, a cutting cylinder 6, on which labels are separated from the label strip by a cutting tool 7 presses against the cutting cylinder, and transports a transport cylinder 8, which takes over the labels from the cutting cylinder, to the containers 9 and applies them to them.

Es sei angemerkt, dass die Leimwalze nicht Teil eines Leimwerks sein muss. Außerdem ist die Etikettiervorrichtung rein beispielhaft und kann beliebig anders ausgebildet sein, beispielsweise so, dass der Leim auf ein Etikettenband oder auf Behälter aufgebracht wird, die auf geeignete Art mit der Leimwalze in Kontakt gebracht werden können. Dabei können die Behälter, Etiketten oder das Etikettenband linear oder auf einem Rundläufer zur Leimwalze transportiert werden. Alternativ oder zusätzlich kann die Leimwalze bewegbar, beispielsweise schwenkbar oder verfahrbar angeordnet sein, so dass sie mit den Etiketten, Behältern oder Etikettenbändern in Kontakt gebracht werden kann.It should be noted that the glue roller does not have to be part of a glue unit. In addition, the labeling device is purely exemplary and can be designed in any other way, for example in such a way that the glue is applied to a label strip or to containers that can be brought into contact with the glue roller in a suitable way. The containers, labels or label tape can be transported to the glue roller linearly or on a rotary conveyor. Alternatively or additionally, the glue roller can be arranged such that it can be moved, for example pivoted or moved, so that it can be brought into contact with the labels, containers or label strips.

Figur 2 zeigt die abgerollte Oberfläche 10 einer Leimwalze in Draufsicht mit einer Vielzahl von hexagonalen Vertiefungen 11. Hier sind die Vertiefungen mit einem minimalen Abstand 12 zum Rand der Zylinderfläche bezogen auf die Breite 13 der Leimwalze angeordnet. Außerdem sind Vertiefungen entlang des gesamten Umfangs 14 angeordnet. figure 2 shows the unrolled surface 10 of a glue roller in plan view with a multiplicity of hexagonal indentations 11. Here the indentations are arranged at a minimum distance 12 from the edge of the cylinder surface in relation to the width 13 of the glue roller. In addition, indentations are arranged along the entire circumference 14 .

Figur 3 zeigt einen Schnitt durch eine Ebene 15 parallel zur Drehachse senkrecht zur Leimwalzenoberfläche. Hier ist der Abstand 16 zwischen benachbarten Vertiefungen als Abstand der Mittelpunkte der Vertiefungen gezeigt. Die Vertiefungen sind in der gezeigten Richtung äquidistant angeordnet, dies muss jedoch nicht der Fall sein. Außerdem ist die Tiefe 17 der Vertiefungen gezeigt. Hier haben die Vertiefungen eine gleichmäßige Tiefe, was jedoch nicht der Fall sein muss. Zu erkennen sind auch die Seitenwände 18 der Vertiefungen und ihr Neigungswinkel 19 von 120° zur Oberfläche der Leimwalze. Außerdem sind die Stege 20 zwischen den Vertiefungen gezeigt. figure 3 shows a section through a plane 15 parallel to the axis of rotation perpendicular to the glue roller surface. Here the spacing 16 between adjacent dimples is shown as the spacing of the centers of the dimples. The indentations are arranged equidistantly in the direction shown, but this need not be the case. The depth 17 of the depressions is also shown. Here the indentations are of uniform depth, but this need not be the case. The side walls 18 of the depressions can also be seen and its angle of inclination 19 of 120° to the surface of the glue roller. Also shown are the ridges 20 between the indentations.

Figur 4 zeigt eine detaillierte Draufsicht auf eine Oberfläche einer Leimwalze. Hier ist ebenfalls der Abstand 16 der Mittelpunkte benachbarter Vertiefungen gezeigt. Außerdem ist die Stegbreite 21, eine erste Seitenlänge 22, eine zweite Seitenlänge 23, ein erster Innenwinkel 24 und ein zweiter Innenwinkel 25 gezeigt. In diesem Beispiel sind die erste und die zweite Seitenlänge unterschiedlich und der erste und der zweite Innenwinkel sind unterschiedlich. Dies muss aber nicht der Fall sein. Es kann sich beispielsweise auch um ein reguläres Hexagon mit gleichen Seitenlängen und Innenwinkeln handeln. In diesem Beispiel ist die Stegbreite zwischen den drei Vertiefungen gleich, dies muss jedoch nicht der Fall sein. Außerdem sind hier benachbarte Kanten benachbarter Vertiefungen parallel, was jedoch ebenfalls nicht der Fall sein muss. figure 4 shows a detailed plan view of a surface of a glue roller. The distance 16 between the centers of adjacent depressions is also shown here. The web width 21, a first side length 22, a second side length 23, a first interior angle 24 and a second interior angle 25 are also shown. In this example, the first and second side lengths are different, and the first and second interior angles are different. But this does not have to be the case. For example, it can also be a regular hexagon with the same side lengths and interior angles. In this example, the land width between the three indentations is the same, but this need not be the case. In addition, adjacent edges of adjacent depressions are parallel here, but this does not have to be the case either.

In einer beispielhaften Ausführungsform in der die Leimwalze wie oben beschrieben ausgeführt sein kann, können größenordnungsmäßig etwa 400000 bis 500000 hexagonale Vertiefungen auf einer Mantelfläche von etwa 1200 cm2 angeordnet sein. Insbesondere kann eine typische Dichte von Vertiefungen (bezogen auf die Zylinderfläche) bei etwa 350/m2 liegen. Die Seitenlänge der Kanten können beispielsweise an zwei gegenüberliegenden Seiten 0,29 mm (beispielsweise die erste Kantenlänge 22) und an den übrigen Seiten 0,24 mm (beispielsweise die zweite Kantenlänge 23) betragen. Die Tiefe kann dabei beispielhaft 0,05 mm betragen und die Stegbreite 0,1 mm. Der Winkel der Seitenwände kann 120° betragen und die Pressfläche kann bei etwa 32% liegen. Das Zwischenraumvolumen liegt dann bei etwa 30,5 ml/m2. Die Summe der Figuren in axialer Richtung kann beispielsweise etwa 1000 sein und in radialer Richtung etwa 400 bis 500.In an exemplary embodiment in which the glue roller can be designed as described above, approximately 400,000 to 500,000 hexagonal depressions can be arranged on a lateral surface of approximately 1200 cm 2 . In particular, a typical density of depressions (based on the cylinder surface) can be around 350/m 2 . The side length of the edges can be 0.29 mm (for example the first edge length 22) on two opposite sides and 0.24 mm (for example the second edge length 23) on the other sides. The depth can be 0.05 mm, for example, and the web width 0.1 mm. The angle of the side walls can be 120° and the pressing area can be about 32%. The interstitial volume is then about 30.5 ml/m 2 . The sum of the figures in the axial direction can be, for example, about 1000 and in the radial direction about 400 to 500.

Claims (15)

  1. Glue roller (2) for applying glue to labels, label strips and/or containers in a labelling device (1), characterised in that
    the surface of the glue roller (2) has a plurality of depressions (11), each in the form of a hexagon,
    the side walls (18) of the hexagon having an inclination of 110° to 140°, preferably 120°, in relation to the surface of the glue roller (2).
  2. Glue roller according to claim 1, wherein all depressions have the same side length (22, 23) and/or the same depth (17) and/or the same inclination (19) of the side walls (18), wherein the side length (22, 23) is measured on the upper edge of the depression (11), i.e., at the level of the non-depressed surface of the glue roller.
  3. Glue roller according to either claim 1 or claim 2, wherein the depressions (11) are arranged in such a way that in each case one edge of each of the depressions (11) and one edge of each adjacent depression (11) are arranged in parallel.
  4. Glue roller according to any of the preceding claims, wherein the depressions (11) are arranged about the entire circumference (14) of the glue roller (2).
  5. Glue roller according to any of the preceding claims, wherein the depressions (11) are arranged over the entire width (13) of the glue roller (2).
  6. Glue roller according to any of the preceding claims, wherein the depressions (11) have a uniform depth (17) apart from the side walls (18).
  7. Glue roller according to any of the preceding claims, wherein the side length (22, 23) of the depressions is between 0.2 and 0.35 mm, in particular between 0.24 mm and 0.29 mm, preferably 0.26 mm.
  8. Glue roller according to any of the preceding claims, wherein the depressions have a depth (17) of 0.04 mm to 0.125 mm, in particular 0.04 mm to 0.06 mm, in particular 0.045 mm to 0.055 mm, preferably 0.05 mm.
  9. Glue roller according to any of the preceding claims, wherein the distance (16) between adjacent depressions (11) is between 0.4 mm and 0.8 mm, in particular between 0.5 mm and 0.7 mm, preferably 0.6 mm, wherein the distance refers to a distance between the centres of the depressions (11).
  10. Glue roller according to any of the preceding claims, wherein the web width (21) between the depressions (11) is between 0.07 mm and 0.13 mm, preferably 0.1 mm, wherein the web width is the distance between the adjacent upper edges of two adjacent depressions (11).
  11. Glue roller according to any of the preceding claims, wherein no depressions are arranged at a distance (12) of 1 cm to 2 cm, in particular 1.5 cm, from the sides of the glue roller.
  12. Glue roller according to any of the preceding claims, wherein the proportion of pressing surfaces is 30% to 35%, preferably 32%, wherein the pressing surfaces are the surfaces that are not depressed and, during operation, press against the label or label strip to be glued or the container to be glued.
  13. Glue roller according to any of the preceding claims, wherein each interior angle (24, 25) of the hexagon is greater than or equal to 100° and less than or equal to 150°, in particular less than or equal to 140° and greater than 110°, in particular less than or equal to 135° and greater than or equal to 115°, in particular less than or equal to 130° and greater than or equal to 120°, wherein the interior angle designates an angle that is enclosed by adjacent polygon sides.
  14. Glue roller according to any of the preceding claims, wherein each depression (11) is formed such that opposite edges of the depression are parallel.
  15. Glue roller according to any of the preceding claims, wherein each depression (11) is formed in the shape of a regular hexagon.
EP16733484.6A 2015-08-25 2016-06-28 Glue roller Active EP3341299B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202015104501.8U DE202015104501U1 (en) 2015-08-25 2015-08-25 glue roller
PCT/EP2016/065022 WO2017032489A1 (en) 2015-08-25 2016-06-28 Glue roller

Publications (2)

Publication Number Publication Date
EP3341299A1 EP3341299A1 (en) 2018-07-04
EP3341299B1 true EP3341299B1 (en) 2022-06-15

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EP16733484.6A Active EP3341299B1 (en) 2015-08-25 2016-06-28 Glue roller

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Country Link
EP (1) EP3341299B1 (en)
CN (1) CN208393790U (en)
DE (1) DE202015104501U1 (en)
ES (1) ES2923870T3 (en)
WO (1) WO2017032489A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020156785A1 (en) * 2019-01-29 2020-08-06 Sidel Participations Glue application device for a labeling unit
CN111842003A (en) * 2020-03-25 2020-10-30 杭州星华反光材料股份有限公司 Gluing device and gluing method for large-pattern fancy reflective patterns

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6455152B1 (en) * 1999-08-31 2002-09-24 3M Innovative Properties Company Adhesive coating method and adhesive coated article
DE102010000182A1 (en) * 2010-01-25 2011-07-28 Krones Ag, 93073 Glue roller for applying glue on rear side of label, has multiple cavities that are extended in direction of glue roller axis and are formed at lateral area

Also Published As

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ES2923870T3 (en) 2022-10-03
CN208393790U (en) 2019-01-18
WO2017032489A1 (en) 2017-03-02
EP3341299A1 (en) 2018-07-04
DE202015104501U1 (en) 2015-09-15

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