EP2344327B1 - Werkzeug zur herstellung mindestens einer falte auf einem relativ starren material, wie zum beispiel pappe - Google Patents

Werkzeug zur herstellung mindestens einer falte auf einem relativ starren material, wie zum beispiel pappe Download PDF

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Publication number
EP2344327B1
EP2344327B1 EP09808948.5A EP09808948A EP2344327B1 EP 2344327 B1 EP2344327 B1 EP 2344327B1 EP 09808948 A EP09808948 A EP 09808948A EP 2344327 B1 EP2344327 B1 EP 2344327B1
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EP
European Patent Office
Prior art keywords
tool
crease
sheet
strip
crown
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09808948.5A
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English (en)
French (fr)
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EP2344327A2 (de
Inventor
Giuseppe Capoia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panotec SRL
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Panotec SRL
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Publication date
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Publication of EP2344327A2 publication Critical patent/EP2344327A2/de
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Publication of EP2344327B1 publication Critical patent/EP2344327B1/de
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • 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
    • B31B50/254—Surface scoring using tools mounted on belts or chains
    • 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
    • B31B50/256—Surface scoring using tools mounted on a drum

Definitions

  • the present invention concerns a tool used to make at least a crease on a sheet, or a strip, made of a relatively rigid material, such as cardboard, plastic or materials having a similar characteristics of rigidity.
  • a blind or continuous crease we mean a shaping made with a deformation through compression of the thickness of the material
  • through crease we mean a shaping in which at least a cut segment is provided through the thickness.
  • plants which are known which are used to carry out a plurality of processes, cuts and/or creases, or segments of preferential folding, on a packing material, for example cardboard, so as to facilitate and guide the folding of the sheet to define a box for packaging. See for example the document US 5 690 601 .
  • such plants are suitable to receive a continuous strip of such material and are provided with processing units able to carry out, on the strip, transverse and longitudinal creases distanced with respect to each other by a determinate pitch.
  • the processing units can also be suitable to perform the cutting to size of the strip, to define single sheets.
  • the sheets are made in a size to correspond to the size of box to be made.
  • Two types of crease are substantially known, respectively blind or continuous and through or segmented.
  • the continuous crease provides a compression, substantially at points, on the thickness of the material along an ideal folding line of the sheet, while the segmented crease provides to make an alternation of cut segments, or notches, through along the fold line, and of blind segments.
  • the disk tool is disposed so as to make the crease in a direction parallel to the direction of feed of the strip or sheet of material with respect to the creasing unit.
  • the segmented crease is typically made by means of punching, so as to make all the through notches provided on the sheet at the same time.
  • punching the material is incised under pressure so as to make the notches and, above all with the thicker sheets, the possibilities are greater that some notches stay blind, or that flashes or curls of material are formed, as the punches come out from the notches just made. Therefore, the quality of the finished product is not always satisfactory.
  • Cutting disks are also known which are alternatively brought into operative position on the sheet, with respect to the creasing disks.
  • One purpose of the present invention is to produce a creasing tool which is both simple and economical to make and which allows to carry out both continuous creases and segmented creases, with reduced equipping times.
  • Another purpose of the present invention is to produce a tool which allows to make a continuous crease and segmented crease, guaranteeing a satisfactory quality of the finished product, even in the case of folding a relatively thick, or thick, sheet or strip.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a tool according to the present invention is used to make one or more creases on a sheet, or strip, made of a relatively rigid material, such as for example cardboard, plastic or materials with similar characteristics of rigidity, provided as a single sheet, a sheet of a continuous module, a portion of a strip.
  • a relatively rigid material such as for example cardboard, plastic or materials with similar characteristics of rigidity
  • the tool according to the present invention is able to be selectively moved in relation to the sheet or strip, so as to define at least a first operative position, in which it is at a first level with respect to the sheet, and is able to make a continuous or blind crease, and a second operative position, in which it is at a second level with respect to the sheet, lower than the first level, and is able to make a through or segmented crease, or a true and proper cut.
  • the tool according to the present invention comprises at least a disk made of a rigid material, for example metal, provided around the circumference with at least a cutting segment able to make one or more notches on the thickness of the sheet or strip, so as to define the segmented or through crease, or able to make a cut proper.
  • the tool comprises at least a crown made of an elastically deformable material, such as rubber or other elastomer, normally disposed covering at least the cutting segment of the disk, able to make the continuous or blind crease.
  • an elastically deformable material such as rubber or other elastomer
  • the crown has a level of hardness such that, at a first working pressure, it resists deformation and makes a blind crease on the thickness of the sheet or strip.
  • the crown is also shaped, with respect to the cutting segment, so as to be able to deform elastically in a substantially radial direction toward the inside of the disk, when it undergoes a second working pressure greater than said first pressure, so as to uncover the cutting segment and allow the latter to carry out the relative incision on the sheet or strip.
  • the choice of using the tool to carry out one or the other of the two shapings depends on the working pressure of the tool itself with respect to the sheet or strip, so as to selectively cause, or not, the elastic deformation of the crown and therefore uncover the cutting segment, or keep it covered.
  • the crown being made of an elastically deformable material, can be made by casting so as to be able to obtain, in a simple and economical way, substantially any conformation of external shaping. It is therefore possible to obtain creases of a different shape with respect to traditional ones, improving the subsequent folding conditions of the sheet or strip.
  • the Applicant has verified that the creasing action made by the crown made of elastically deformable material on the sheet or strip determines a substantially wider crease impression than traditional creases, facilitating the precise folding of the sheet or strip even in the case where the latter is relatively thick.
  • the disk provides a plurality of cutting segments angularly offset with respect to each other, to make, as a consequence of the rotation of the disk on the sheet or strip, a through crease with alternate segments.
  • the crown is disposed to cover at least one lateral flank and an external circular top of each cutting segment. According to this variant, when the tool acts at the second working pressure, the crown deforms elastically, sliding on the flank of the cutting segment and freeing the circular top toward the outside of the disk.
  • the crown comprises two annular parts, each of which is disposed to cover a relative opposite lateral flank of the cutting segment and, usually, to cover the circular top.
  • the crown deforms elastically so that the two annular parts open centrally, each sliding on the respective flank of the cutting segment, freeing the circular top toward the outside.
  • the annular parts press progressively on the sheet or strip, tending to open progressively, depending on their angular position with respect to the relatively rigid material.
  • the pressure on the annular parts increases progressively, initially defining a compression on the sheet or strip, and then they open progressively to allow the top of the cutting segment to exit radially with respect to the crown and to carry out the processing, segmented crease or through crease, or cut, on the thickness of the sheet or strip.
  • the prior compression made by the crown not yet completely deformed allows to compact the fibers which define the thickness of the sheet or strip, thus improving the processing conditions and the penetration of the cutting segments, avoiding the formation of flashes and substantially ensuring the complete through incision of all the notches. This is particularly advantageous in operations of through creases.
  • the tool comprises a rotary body on which two disks are circularly assembled substantially parallel and coaxial with respect to each other. They are spaced at a determinate pitch so as to make two parallel creases on the sheet or strip at the same time.
  • At least one of the two disks comprises a crown made of a deformable material associated, according to the invention, with the relative cutting segment.
  • a tool 10 is used to make both a continuous crease 11a ( fig. 3 ), and also a segmented crease 11b ( fig. 4 ), on relatively rigid material, in this case a sheet of cardboard 11; it can be a single sheet, for example, a sheet of a continuous module but also a portion of a strip.
  • the crease 11a or 11b, made on the sheet of cardboard 11 by the tool 10 is intended to promote the exact and linear folding of the cardboard 11, as for example in the automatic making of a packing case.
  • the tool 10 comprises a rotary body 12, keyed axially on a hub 13, which is, in its turn, motorized, to give the rotary body 12 a determinate angular working speed.
  • the rotary body 12 has an annular seating 14 around its circumference which develops radially toward the inside of the rotary body 12 and inside which a disk 15 made of a rigid material is housed.
  • the disk 15 is provided with a plurality of cutting segments 16 on its periphery angularly offset with respect to each other at a determinate pitch, separated by mating empty spaces 23.
  • Each cutting segment 16 is made of metal and has a substantially "V" shaped cross section, so as to be able to penetrate into the thickness of the sheet of cardboard 11 and make an through incision on it.
  • an elastically deformable crown 17 is housed, in this case made of rubber, and disposed so as to keep the cutting segments 16 of the disk 15 normally covered.
  • the crown 17 comprises two annular rims or portions 19 and 20, facing each other, each of which is disposed laterally to the disk 15, so as to normally cover a respective lateral flank 16a of the cutting segments 16.
  • Each annular rim 19 and 20 is also disposed so as to normally cover the external circular top 16b of the cutting segments 16.
  • annular rims 19 and 20 are externally shaped so as to define the desired conformation of the cross section of the continuous crease 11a.
  • the material which makes up the rims 19 and 20 allows the latter to be made by casting, and can confer on them substantially any conformation whatsoever.
  • the external shaping of the rims 19 and 20 is such as to define a continuous crease 11a wider than continuous traditional creases.
  • the elastically deformable material which makes up the crown 17 has a level of hardness comprised between about 45 and about 65 units on the Shore scale. This range of hardness has shown itself to be optimal for the correct, precise and clean execution, without residual flashes or curls, both in the segmented crease and the continuous crease, on sheets made with the materials described above.
  • a first working pressure of the tool 10 on a sheet of cardboard 11 for example comprised between about 250 kN/m 2 and about 400 kN/m 2 , equal to about 2.5 bar and about 4 bar, the two rims 19 and 20 are not elastically deformed, and keep the cutting segments 16 covered and inactive.
  • the resulting pressure is, in fact, insufficient to cause any elastic deformation thereof.
  • a pressure higher than the first and for example comprised between about 400 kN/m 2 and about 600 kN/m 2 , equal to about 4 bar and about 6 bar, the two rims 19 and 20 tend to deform progressively on contact with the cardboard sheet 11.
  • the progressive deformation determines a radial sliding of the rims 19 and 20 along the sides of the cutting segment 16 of the disk 15, toward the center of the rotary body 12, opening laterally and freeing the external circular top 16b of the cutting segment 16 ( fig. 2 ).
  • the cutting segment 16 is free to penetrate into the thickness of the cardboard sheet 11, defining the desired through notch.
  • two disks 15 are assembled in the circular seating 14 of the rotary body 12 and disposed substantially parallel with respect to each other and concentric to the rotary body 12.
  • the distance between the two disks 15 is defined and maintained by an annular spacer 21, which is interposed between them.
  • the disk 15, shown on the right in fig. 7 is associated with a rim 20 of the elastically deformable crown 17, while the disk 15, shown on the left, is partially covered by a metal edge 22 which extends radially in a single piece from the rotary body 12.
  • the disk 15 has a substantially continuous cutting segment 16, to make a constant cut, and not a segmented one, of the cardboard, for example, when making a packing case, to define the closing flaps.
  • both the disks are associated with relative crowns 17 in an elastically deformable material.
  • the variation in working pressure of the tool 10 with respect to the sheet 11 is managed and commanded by an electronic command unit which is programmed and programmable.
  • the variation in working pressure of the tool 10 with respect to the sheet 11 is managed and commanded manually.

Claims (10)

  1. Werkzeug zur Erzeugung wenigstens einer Falte an einem Bogen oder einem Streifen (11),der aus einem wenigstens verhältnismäßig starren Material besteht, dadurch gekennzeichnet, dass es selektiv in Bezug auf den Bogen oder den Streifen (11) bewegt werden kann, um wenigstens eine erste betriebliche Position, in der es sich in Bezug auf den Bogen oder den Streifen (11) in einer ersten Ebene befindet und eine fortlaufende oder blinde Falte (11a) ausführen kann, und eine zweite betriebliche Position zu definieren, in der es sich in einer zweiten Ebene befindet, die in Bezug auf den Bogen oder den Streifen (11) niedriger als die erste Ebene ist, und eine durchgehende oder segmentierte Falte (11b) ausführen kann, oder einen Schnitt ausführen kann.
  2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass es wenigstens eine aus einem starren Material bestehende Scheibe (15) umfasst, die in der Umfangsrichtung mit wenigstens einem Schneidesegment (16), das an der Dicke des Bogens oder des Streifens (11) eine durchgehende oder segmentierte Falte (11b) oder einen Schnitt ausführen kann, und wenigstens einer Krone (17) versehen ist, die aus einem elastisch verformbaren Material besteht, das normalerweise angeordnet ist, um wenigstens das Schneidesegment (16) der Scheibe (15) abzudecken, und eine fortlaufende oder blinde Falte (11a) ausführen kann.
  3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Krone (17) einen derartigen Härtegrad aufweist, dass sie bei einem ersten Arbeitsdruck einer Verformung standhält und an der Dicke des Bogens oder des Streifens (11) eine fortlaufende oder blinde Falte (11a) ausführt, und dass sie sich bei einem zweiten Arbeitsdruck, der höher als der erste Arbeitsdruck ist, in einer im Wesentlichen radialen Richtung elastisch zu dem Inneren der Scheibe (15) hin verformen kann, um das Schneidesegment (16) freizulegen und die Ausführung der relativen durchgehenden oder segmentierten Falte (11b) oder des Schnitts an dem Bogen oder dem Streifen (11) zu gestatten.
  4. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Scheibe (15) eine Vielzahl Schneidesegmente (16) umfasst, die in Bezug zueinander winkelig um einen vorherbestimmten Teilungswinkel versetzt sind.
  5. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Krone (17) angeordnet ist, wenigstens eine seitliche Flanke (16a) und eine äußere kreisförmige Oberseite (16b) jedes Schneidesegments (16) abzudecken.
  6. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Krone (17) zwei ringförmige Teile (19, 20) umfasst, von denen jeder so angeordnet ist, dass er eine relative gegenüberliegende seitliche Flanke (16a) des Schneidesegments abdeckt, und dass sie gemeinsam die äußere ringförmige Oberseite (16b) abdecken.
  7. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das elastisch verformbare Material der Krone (17) einen Härtegrad aufweist, der zwischen etwa 45 und etwa 65 Einheiten der Shore-Skala liegt.
  8. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es einen Drehkörper (12) umfasst, an dem wenigstens zwei Scheiben (15) im Wesentlichen parallel und koaxial zueinander angebracht sind, um an dem Bogen oder dem Streifen (11) gleichzeitig wenigstens zwei parallele Falten (11a, 11b) oder Schnitte auszuführen.
  9. Werkzeug nach Anspruch 8, dadurch gekennzeichnet, dass es ein Abstandselement (21) umfasst, das zwischen die beiden Scheiben (15) eingefügt ist und sie um einen festgelegten Abstand voneinander beabstandet halten kann.
  10. Werkzeug nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass wenigstens eine der beiden Scheiben (15) seitlich mit einer Metallkante (22) verbunden ist, die sich radial von dem Drehkörper (12) erstreckt.
EP09808948.5A 2008-09-12 2009-09-10 Werkzeug zur herstellung mindestens einer falte auf einem relativ starren material, wie zum beispiel pappe Active EP2344327B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD2008A000198A IT1394150B1 (it) 2008-09-12 2008-09-12 Utensile per eseguire almeno una cordonatura su un materiale relativamente rigido, quale ad esempio cartone
PCT/IB2009/006800 WO2010029416A2 (en) 2008-09-12 2009-09-10 Tool to make at least a crease on a relatively rigid material, such as for example cardboard

Publications (2)

Publication Number Publication Date
EP2344327A2 EP2344327A2 (de) 2011-07-20
EP2344327B1 true EP2344327B1 (de) 2013-06-12

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EP09808948.5A Active EP2344327B1 (de) 2008-09-12 2009-09-10 Werkzeug zur herstellung mindestens einer falte auf einem relativ starren material, wie zum beispiel pappe

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Country Link
EP (1) EP2344327B1 (de)
IT (1) IT1394150B1 (de)
WO (1) WO2010029416A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015006139U1 (de) 2015-08-31 2015-10-15 G. Kraft Maschinenbau Gmbh Vorrichtung zum Rillen, Perforieren, Schneiden und Ritzen von flächigen Gegenständen
DE102015011399A1 (de) 2015-08-31 2017-03-02 G. Kraft Maschinenbau Gmbh Vorrichtung und Verfahren zum Rillen, Perforieren, Schneiden und Ritzen von flächigen Elementen

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DE102012220233B4 (de) 2012-11-07 2019-03-28 Ligmatech Automationssysteme Gmbh Bearbeitungsvorrichtung mit einem drehbaren Werkzeugaufnehmer
EP3311314A1 (de) 2015-06-17 2018-04-25 International Boxes S.R.L. Verfahren und computersystem zur virtuellen darstellung von bildern auf pappkartons
ITUA20163729A1 (it) 2016-05-24 2017-11-24 F L Auto Srl Stazione di taglio di un foglio di cartone da una striscia continua di cartone e macchina per l’imballaggio di un articolo all’interno di una scatola di cartone ottenuta dal foglio di cartone
ITUA20163886A1 (it) * 2016-05-27 2017-11-27 Smurfit Kappa Italia S P A Fustella a cordonatore multiplo
EP3254840B1 (de) * 2016-06-09 2019-05-08 Neopost Technologies Welleinheit für die erstellung von faltlinien in karton, vorrichtung zum bilden von rohlingen umfassend eine solche welleinheit und verfahren für die erstellung von faltlinien in karton
IT201700066129A1 (it) * 2017-06-14 2018-12-14 L C R Macch Automatiche S R L Macchina cartonatrice
EP3521006B1 (de) 2018-01-31 2020-11-25 Quadient Technologies France Verfahren und system zur herstellung von massgefertigten kartonzuschnitten für verpackungen sowie verfahren und system zur automatischen verpackung von versandsets in kisten

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US4936818A (en) * 1989-03-27 1990-06-26 Holohan Jr Joseph Paper scoring device
US5690601A (en) * 1996-06-10 1997-11-25 Marquip, Inc. Method and apparatus for slitting and scoring corrugated paperboard sheets for folding
US6508751B1 (en) * 1997-09-12 2003-01-21 Sun Source L Llc Method and apparatus for preforming and creasing container board

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015006139U1 (de) 2015-08-31 2015-10-15 G. Kraft Maschinenbau Gmbh Vorrichtung zum Rillen, Perforieren, Schneiden und Ritzen von flächigen Gegenständen
DE102015011399A1 (de) 2015-08-31 2017-03-02 G. Kraft Maschinenbau Gmbh Vorrichtung und Verfahren zum Rillen, Perforieren, Schneiden und Ritzen von flächigen Elementen
DE102015011399B4 (de) 2015-08-31 2020-01-23 G. Kraft Maschinenbau Gmbh Vorrichtung und Verfahren zum Rillen, Perforieren, Schneiden und Ritzen von flächigen Elementen

Also Published As

Publication number Publication date
WO2010029416A3 (en) 2010-06-24
WO2010029416A2 (en) 2010-03-18
IT1394150B1 (it) 2012-05-25
EP2344327A2 (de) 2011-07-20
ITUD20080198A1 (it) 2010-03-13

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