EP3191312B1 - Dispositif d'estampage partiel d'opercules et procédé d'estampage partiel d'opercules - Google Patents

Dispositif d'estampage partiel d'opercules et procédé d'estampage partiel d'opercules Download PDF

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Publication number
EP3191312B1
EP3191312B1 EP15763835.4A EP15763835A EP3191312B1 EP 3191312 B1 EP3191312 B1 EP 3191312B1 EP 15763835 A EP15763835 A EP 15763835A EP 3191312 B1 EP3191312 B1 EP 3191312B1
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EP
European Patent Office
Prior art keywords
dimensional elements
embossing
male mould
angle
film
Prior art date
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Active
Application number
EP15763835.4A
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German (de)
English (en)
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EP3191312A1 (fr
Inventor
Andreas Brieler
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.)
Tscheulin Rothal GmbH
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Tscheulin Rothal GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP3191312A1 publication Critical patent/EP3191312A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/20—Storage arrangements; Piling or unpiling
    • B21D43/22—Devices for piling sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
    • B44B5/0019—Rectilinearly moving embossing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2807—Feeding closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container

Definitions

  • the present invention relates to a device for partially embossing sealing plates and a method for partially embossing sealing plates.
  • containers for food are often tightly closed with sealable lids. This is particularly true for foods that are consumed directly from the container.
  • the containers are usually formed directly in a device, filled with the intended product and then sealed with a sealing plate.
  • prefabricated containers are filled in a machine and sealed with a sealing plate.
  • Such devices are known as so-called “fill-seal” machines (FS machines).
  • FS machines fill-seal machines
  • the sealing plates required to close the container are usually prefabricated sealing plates that are manufactured in large numbers and stored or transported in stacks. These sealing boards are often made of aluminum or a laminate that includes a layer of aluminum.
  • the sealing plates are fed to the above-mentioned fill-seal machines using a feed device, for example, and sealed directly onto the edge of the filled container.
  • the sealing plates which are often additionally printed and punched out according to the contours of the container, are stacked. Since the sealing plates are transported and delivered in stacks, the sealing plates must be unstacked again using the feed device and fed individually to a filled container. However, stacking the flat and smooth sealing plates causes them to stick together in the stack with considerable adhesion (glass plate effect). However, the orderly unstacking of the sealing plates is difficult to control and it is not guaranteed that the sealing plates are individually unstacked and each fed to a container or sealed. In order to ensure that individual sealing plates are unstacked, it is known, for example, to emboss the sealing plates.
  • EP 1 790 470 A method for partially embossing lids is described, whereby the geometric position of the embossing tool relative to the film web is adjustable.
  • the partial embossing is carried out in such a way that successive lids are not embossed congruently and is preferably only applied to every second lid.
  • WO 2009/097961 A1 discloses a lid made of a carrier material, an inward-facing sealing layer made of a sealing wax printed on the carrier material, based on a container to which the lid is used, for closing the container having a shoulder, the inward-facing side of the carrier material being the sealing layer in the form of a printed image corresponding to the shoulder of the container and within the area delimited by the sealing layer a printed pattern made of a sealing wax or polymer-containing lacquer is printed onto the carrier material, as well as a method for producing the lid.
  • An object of the present invention is to provide a device and a method for producing partially embossed sealing plates that can be further processed easily and without problems.
  • partial embossing of sealing plates and partial embossing of sealing plates are used synonymously in the present case and are understood as embossing a part of the surface of the sealing plate.
  • a device according to the invention for partially embossing deep-drawn or flat sealing plates that are punched out of a foil strip comprises an embossing tool and a punching tool.
  • the current application discloses an embossing tool comprising two half tools, a male die and a die. This is on the
  • the desired deep-drawn contour or three-dimensional relief is depicted using mechanical processes.
  • the patrix has the three-dimensional relief in a raised and mirror-image form.
  • the counterpart of the patrix, the die or stamp has the three-dimensional relief in the correct and recessed form.
  • On the contoured side of the male part three-dimensional elements are arranged in an outer area and in a central area.
  • the male and female molds are rotatably mounted in their spatial position about an axis A that is essentially perpendicular to the film strip.
  • the embossing and punching tools are combined in one tool.
  • the film web is gradually moved in the transport direction or machine direction of the device.
  • the embossing tool arranged in front of the punching tool creates the desired contour or embossing in the sealing plate by means of a lifting movement by deep drawing.
  • the film strip is moved in the transport direction via appropriate transport means to such an extent that the film strip or the sealing plate, which is now partially or partially embossed, is on the position of the punching tool comes to rest, where it is punched out of the film strip during the next stroke movement of the punching tool.
  • the male mold and the die of the embossing tool are rotatably mounted about an axis A, which is essentially perpendicular to the film strip, a simple rotation of the male die and the die through an angle ⁇ about the axis A can be achieved. that no two successive sealing plates that come together in a stack after punching out have a congruent embossing.
  • the male and female dies of the embossing tool are rotated synchronously and in the same direction through the same angle ⁇ . This avoids undesirable sticking of the partially embossed sealing plates together during unstacking in a simple and advantageous manner.
  • the immediately adjacent arrangement of the embossing and punching tools also results in greater precision in the partial embossing and the punched out contour of the sealing plate. Furthermore, the only partial embossing of the sealing plate enables a better print image on the sealing plate that is not affected by any embossing.
  • the embossing tool in turn comprises two half-tools, a male die and, as a second half-tool, an elastic medium.
  • the male part is rotatably mounted in its spatial position about an axis A which is essentially perpendicular to a film strip.
  • the function of the die is taken over by the elastic medium.
  • the elastic medium is preferably designed in the form of a stamp pad.
  • the circumferential contours of the stamp pad preferably correspond to the circumferential contours of the male die. They are, for example, cylindrical or circular cylindrical.
  • the male part and the elastic medium are precisely aligned with one another, that is, their axes, which are essentially perpendicular to a film strip, are aligned.
  • the elastic medium does not have a three-dimensional relief in a correct and recessed form as a conventional matrix does. This is not necessary due to the elastic medium.
  • the partial surface embossing of the film strip is achieved by exerting a sufficiently large pressure of the elastic medium on the film strip lying between the elastic medium and the male mold.
  • the elastic medium does not have three-dimensional relief, it is not necessary that it is rotatably mounted about an axis A that is essentially perpendicular to a film strip.
  • the elastic medium is therefore preferably mounted so that it cannot rotate about the axis A. This results in a structural simplification of the embossing tool.
  • the elastic medium can have any shape to generate a sufficiently large stamp pressure.
  • the elastic medium preferably has the shape of a stamp pad, the circumferential contours of which correspond to those of the male die.
  • the elastic medium preferably comprises hard rubber.
  • Other elastic media can also be used, for example plastics, for example elastomers, preferably thermoplastic elastomers.
  • the three-dimensional elements are arranged randomly in the outer and central areas.
  • the three-dimensional elements are particularly preferably arranged randomly in the outer area.
  • the three-dimensional elements in the outer area and in the central area of the male part are arranged on circular lines, preferably at regular intervals.
  • the three-dimensional elements can have different shapes.
  • they can be cylindrical, preferably circular cylindrical, projections that extend essentially vertically away from the surface of the male mold.
  • the individual three-dimensional elements have a different height. This means that the male part has three-dimensional elements, part of which has a first height, while the remaining three-dimensional elements have a second height the first has different heights. It is also possible that there are even more groups of three-dimensional elements, for example having a third and a fourth height.
  • the male part is mounted so that it can rotate through an angle ⁇ .
  • the angle ⁇ corresponds to the central angle of a sector of a circle, which is defined by two adjacent three-dimensional elements.
  • the angle ⁇ is in a range from 2° to 90°, particularly preferably in a range from 3° to 45° and very particularly preferably in a range from 4° to 15°.
  • the three-dimensional elements can be designed differently and, for example, have different heights.
  • the three-dimensional elements have a height in the range of two to five times the thickness of the film strip. They particularly preferably have a height in the range of three to four times the thickness of the film strip. All three-dimensional elements can have the same height within the specified ranges or the three-dimensional elements can have two or more different heights. Three-dimensional elements of different heights further reduce the effect of stacked sealing plates sticking to one another.
  • a typical thickness of films or film strips used for the production of sealing plates according to the invention is in the range from 20 ⁇ m to 50 ⁇ m, preferably in a range from 24 ⁇ m to 40 ⁇ m and particularly preferably in the range from 30 ⁇ m to 36 ⁇ m.
  • Two examples of typical thicknesses for the films used are 25 ⁇ m and 35 ⁇ m.
  • the particularly preferred ranges for the height of the three-dimensional elements can be determined, which are three to four times the thickness of the foil tape used.
  • the height of the three-dimensional elements is in the range from 60 ⁇ m to 200 ⁇ m, preferably in the range from 72 ⁇ m to 160 ⁇ m and particularly preferably in the range from 90 ⁇ m to 144 ⁇ m.
  • the ranges corresponding to two to five times the film thickness can be determined for the height of the three-dimensional elements.
  • the height of a three-dimensional element is measured from the film surface, on the side of the film on which the three-dimensional elements rise, to the tip or end face of a three-dimensional element.
  • the area of the male part comprising outer three-dimensional elements borders directly on the edge of the male part. Furthermore, the outer area is arranged concentrically to the central area. The central area also has three-dimensional elements, at least on its outer circumference.
  • the contour and circumference of the die and the male die of the embossing tool are adapted to that of the sealing plate. The same applies to the contour of the punching tool.
  • the die and the male die of the embossing tool have a circular contour or a circular circumference.
  • embossing tool and the punching tool are arranged adjacently and both tools can be operated synchronously.
  • the method according to the invention for producing partially embossed sealing plates for containers, in particular for food, is carried out on a device described above.
  • a continuous film strip is fed to the device via rollers.
  • the film tape has preferably already been printed beforehand and then wound onto a roll.
  • the continuous foil tape with the The previously printed sealing plates are fed to the embossing tool.
  • the film strip is transported step by step and the film strip stands still between the feed steps.
  • the partial embossing of the sealing plate is created by means of a lifting movement by the embossing tool or its male die.
  • the lifting movement of the embossing tool can also be carried out using the die or the elastic medium.
  • the foil strip or the now partially embossed sealing plate is moved forward in the transport direction and positioned above the punching tool.
  • the partially embossed sealing plate is punched out and stacked via a collecting channel.
  • the male die and the die of the embossing tool are rotated by at least an angle ⁇ about an axis A that is essentially perpendicular to the film strip.
  • the embossing tool and the punching tool are preferably operated synchronously, which means that with each stroke movement of the punching tool, a partial surface embossing of the film strip or the sealing plate that has not yet been punched out is carried out.
  • the embossing tool of which comprises two half-tools, a male die and an elastic medium
  • the rotational movement of the elastic medium, which takes over the function of the die is preferably eliminated.
  • the male die is rotated by an angle ⁇ between two stroke movements of the punching tool.
  • the angle ⁇ is in a range from 2° to 90°, particularly preferably in a range from 3° to 45° and very particularly preferably in a range from 4° to 15°.
  • the angle ⁇ 4.39°.
  • the male die is therefore rotated by the angle of rotation of 4.39° between two stroke movements.
  • the angle ⁇ is small so that the rotation of the male die does not limit the speed in the process.
  • the male mold and the female mold are rotated back by an angle ⁇ in the opposite direction of rotation between two lifting movements after a first rotation by the angle ⁇ .
  • Figure 1 shows a top view of a male die 1 of an embossing tool.
  • the male part 1 is rotatably mounted about an axis A and has an outer area 3 and a central area 5.
  • Both the outer area 3 and the central area 5 include three-dimensional elements 7.
  • the three-dimensional elements 7 are arranged in the outer area 3 on two concentric circular lines.
  • the central area 5 also has three-dimensional elements 7 arranged on its circular circumference. However, the area between the outer area 3 and the central area 5 is free of three-dimensional elements 7.
  • the contour of the sealing plate 9 is also shown, the circumference of which extends practically to the edge of the male part 1.
  • Figure 2 shows the patrix 1 Figure 1 in two different rotation positions.
  • the male mold 1 was moved from the first rotational position by an angle ⁇ into the two Rotation position twisted.
  • the three-dimensional elements 7 arranged on two concentric circular lines in the outer region 3 of the male mold 1 are arranged offset on the two circular lines, so that after a rotation of the male mold 1 through an angle ⁇ about the axis A, which is essentially perpendicular to the male mold, one three-dimensional element is formed 7 of the inner concentric circular line comes to lie at the angular position at which a three-dimensional element 7 of the outer concentric circular line was located before the rotation and vice versa.
  • Figure 3 shows a cross section through a section of a male mold 1 with three-dimensional elements 7, 7 'and 7" with different heights.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Package Closures (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (12)

  1. Dispositif d'estampage partiel et de découpage d'opercules à partir d'une bande de film à l'aide d'un outil d'estampage comprenant deux demi-moules, un poinçon (1) et un support élastique, et d'un outil de découpage, caractérisé en ce que le poinçon (1) présente des éléments tridimensionnels (7) disposés dans une zone extérieure (3) et dans une zone centrale (5), et en ce que le poinçon (1) dans sa position spatiale est monté rotatif autour d'un axe A substantiellement perpendiculaire à une bande de film.
  2. Dispositif selon la revendication 1, caractérisé en ce que le support élastique comprend du caoutchouc dur.
  3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments tridimensionnels (7) sont disposés de manière aléatoire.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les éléments tridimensionnels (7) sont disposés sur des circonférences, de préférence à intervalles réguliers.
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments tridimensionnels (7) présentent des hauteurs différentes.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le poinçon (1) est monté rotatif selon un angle α, dans lequel l'angle α correspond à l'angle au centre d'un secteur de cercle défini par deux éléments tridimensionnels (7) adjacents l'un à l'autre.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments tridimensionnels (7) présentent une hauteur dans la plage de deux à cinq fois, de préférence de trois à quatre fois, l'épaisseur de la bande de film, dans lequel la bande de film présente une épaisseur dans la plage de 20 µm à 50 µm, de préférence dans une plage de 24 µm à 40 µm, et de manière particulièrement préférée dans la plage de 30 µm à 36 µm.
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone (3) du poinçon (1) présentant des éléments tridimensionnels (7) extérieurs est contigüe au bord du poinçon (1) et est disposée de manière concentrique par rapport à la zone centrale (5) présentant des éléments tridimensionnels (7).
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le poinçon (1) de l'outil d'estampage est circulaire.
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'outil d'estampage est disposé au voisinage de l'outil de découpage, et en ce que les deux outils peuvent fonctionner de manière synchrone.
  11. Procédé de fabrication d'opercules partiellement estampés et en option imprimés, destinés à des récipients, effectué sur un dispositif selon l'une quelconque des revendications 1 à 10, dans lequel les opercules sont découpés à partir d'une bande de film partiellement estampée, caractérisé en ce que le poinçon (1) monté rotatif dans sa position spatiale autour d'un axe A substantiellement perpendiculaire à la bande de film tourne entre deux courses de l'outil de découpage au moins selon un angle α.
  12. Procédé selon la revendication 11, caractérisé en ce que le poinçon (1) est ramené dans le sens de rotation opposé selon un angle α après une rotation selon l'angle α entre deux courses.
EP15763835.4A 2014-09-08 2015-09-08 Dispositif d'estampage partiel d'opercules et procédé d'estampage partiel d'opercules Active EP3191312B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14003089.1A EP2993058A1 (fr) 2014-09-08 2014-09-08 Dispositif et procédé de gaufrage partielle d'opercules
PCT/EP2015/001805 WO2016037697A1 (fr) 2014-09-08 2015-09-08 Dispositif d'estampage partiel d'opercules et procédé d'estampage partiel d'opercules

Publications (2)

Publication Number Publication Date
EP3191312A1 EP3191312A1 (fr) 2017-07-19
EP3191312B1 true EP3191312B1 (fr) 2023-12-20

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP14003089.1A Withdrawn EP2993058A1 (fr) 2014-09-08 2014-09-08 Dispositif et procédé de gaufrage partielle d'opercules
EP15763835.4A Active EP3191312B1 (fr) 2014-09-08 2015-09-08 Dispositif d'estampage partiel d'opercules et procédé d'estampage partiel d'opercules

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14003089.1A Withdrawn EP2993058A1 (fr) 2014-09-08 2014-09-08 Dispositif et procédé de gaufrage partielle d'opercules

Country Status (3)

Country Link
US (1) US20170282234A1 (fr)
EP (2) EP2993058A1 (fr)
WO (1) WO2016037697A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1940970A1 (de) * 1969-08-12 1971-02-25 Franz Radbruch Fa Stapelbare Verschlussdeckel aus einer beschichteten Folie
DE3139507A1 (de) * 1981-03-05 1982-09-23 Gerhard Flemming Numerier-Präge-Apparate, 1000 Berlin "praegevorrichtung fuer verschiedene zeichen"
EP0960024B2 (fr) 1997-12-11 2006-06-28 Teich Aktiengesellschaft Procede de production d'elements de couvercle partiellement estampes pour recipients et dispositif d'application de la methode
ES2476222T3 (es) 2005-11-25 2014-07-14 Berhalter Ag, Widnau Procedimiento para la fabricación de tapas de embalaje o etiquetas sellables parcialmente estampadas y también impresas
MX2010008488A (es) * 2008-02-05 2011-05-30 Amcor Flexibbles Kreuzlingen Ltd Cubierta y metodo para la produccion de la misma.
DE102010064065A1 (de) * 2010-12-23 2012-06-28 Manroland Ag Verfahren zum Erzeugen einer Prägeform in einer Bogenrotationsdruckmaschine
EP2842654B1 (fr) * 2013-08-26 2018-05-30 Feintool International Holding AG Dispositif et procédé de transfert de pièces à usiner dans et hors d'un outil
EP3037354B1 (fr) * 2014-12-22 2017-10-11 Tscheulin-Rothal GmbH Procédé et dispositif pour produire des ébauches partiellement estampées

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Publication number Publication date
EP3191312A1 (fr) 2017-07-19
US20170282234A1 (en) 2017-10-05
EP2993058A1 (fr) 2016-03-09
WO2016037697A1 (fr) 2016-03-17

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