EP4074478B1 - Outil de poinçonnage - Google Patents

Outil de poinçonnage Download PDF

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Publication number
EP4074478B1
EP4074478B1 EP22160637.9A EP22160637A EP4074478B1 EP 4074478 B1 EP4074478 B1 EP 4074478B1 EP 22160637 A EP22160637 A EP 22160637A EP 4074478 B1 EP4074478 B1 EP 4074478B1
Authority
EP
European Patent Office
Prior art keywords
cutting
die
blade
punching
punching tool
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
EP22160637.9A
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German (de)
English (en)
Other versions
EP4074478A1 (fr
Inventor
Carsten Lautz
Reto Wenziker
Sven Beierer
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.)
Rohrer Tools Ag
Original Assignee
Rohrer Tools Ag
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
Application filed by Rohrer Tools Ag filed Critical Rohrer Tools Ag
Publication of EP4074478A1 publication Critical patent/EP4074478A1/fr
Application granted granted Critical
Publication of EP4074478B1 publication Critical patent/EP4074478B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B26D1/085—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4472—Cutting edge section features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/449—Cutters therefor; Dies therefor for shearing, e.g. with adjoining or abutting edges

Definitions

  • the invention relates to a punching tool for cutting plastic-based film elements, with a punching stamp unit which has a plurality of knife holders, to which at least one punching knife having a cutting wedge that tapers into a cutting blade with a cutting edge is attached, and with a die assigned to the punching stamp unit and opposite it for receiving of the film element to be processed, wherein the punch unit is mounted relatively movably relative to the die during a punching stroke in a cutting direction between a starting position and a processing position, the cutting wedges of the punching knives in the processing position being immersed in the film element to be processed and along an edge length of the cutting edge Create cutting line in the film system.
  • Such punching tools have been known for a long time, see for example FR-A-3022818 .
  • Such a punching tool with a pressing surface downstream of the cutting edge and which can be brought into contact with an upper side of the part of the film element to be processed facing away from the die is made from the EP-3566832-A1 known, but the pressing surface is part of the knife carrier.
  • the task of such punching tools is to cut large-area film elements made of plastic, which can be, for example, a two-dimensional large-area film or a three-dimensional film element.
  • Such three-dimensional film elements can be, for example, yogurt cups, which are to be made up in a certain way after production, for example to be separated or in certain, for example four-packs, Cut out groups of six or eight.
  • Important components of such punching tools are punching knives, which create a cutting line when they are immersed in the film element.
  • PET-based film elements are tougher compared to polystyrene-based film elements, so that the punching knives are exposed to higher loads.
  • the object of the invention is to create a punching tool of the type mentioned at the beginning, in which the processing of plastic-based film elements, in particular those made of made of thermoplastic material, is more process-reliable than conventional punching tools.
  • the punching tool according to the invention is characterized in that the cutting blade has a first blade surface facing the die and a second blade surface facing away from the die, with a second blade surface extending transversely to the cutting direction downstream of the cutting edge during the cutting process and an upper side of the die
  • the part of the film element to be processed that faces away is connected to a pressing surface that can be brought into contact.
  • the pressing surface downstream of the cutting edge during the cutting process causes the part of the film element to be processed facing away from the die to be pushed away in the vertical direction from the part of the film element facing the die, which rests in particular in a fixed manner on the upper step of the die.
  • the part of the film element to be processed facing away from the die is pushed downwards away from the part of the film element facing the die during the cutting process, in particular the shear cutting movement carried out by means of the punching knife, as a result of which material bridges that are not separated by the cutting process are stretched and caused to come off.
  • the first blade surface is aligned parallel to the wide blade surface.
  • the pressing surface is aligned at least essentially at right angles to the second blade surface.
  • a cutting edge width of the cutting edge extending transversely to the cutting direction is smaller than a pressing surface width of the pressing surface extending transversely to the cutting direction.
  • the pressing surface width of the pressing surface is expediently designed in such a way that a pressing process of the pressing surface following the cutting process of the cutting edge has a sufficient contact area available on the part of the film element to be processed that faces away from the top of the die.
  • the ratio of cutting edge width to pressing surface width is in the range from 0.1 to 0.8, in particular 0.5 to 0.7.
  • a blade surface height of the second blade surface extending from the cutting edge to the pressing surface is greater than or equal to the pressing surface width.
  • the pressing surface width is greater than the blade surface height of the second blade surface, but it is preferred to dimension the blade surface height greater than or equal to the pressing surface width.
  • the ratio of blade surface height to pressing surface width is in the range from 1.0 to 5.0, in particular 1.5 to 3.0.
  • the cutting wedge has a first wedge surface facing the die and a second wedge surface aligned obliquely to the first wedge surface and facing away from the die, the course of the second wedge surface up to the cutting edge being interrupted by the pressing surface forming a shoulder.
  • the first blade surface of the cutting blade forms a portion of the first wedge surface, which is aligned in the cutting direction with the first wedge surface.
  • the punching knife is designed in one piece and the cutting blade and pressing surface are formed during the production of the punching knife.
  • the punching knife can therefore be designed as a monolith on which all functional sections required for the cutting process (cutting edge, pressing surface) are formed.
  • the punching knife is designed in several parts, with a plate-shaped cutting blade element and a wedge-shaped blade carrier, to which the cutting blade element is attached in such a way that a front lower end of the blade carrier covers the pressing surface and a projection of the cutting blade element beyond the lower end of the blade carrier forms the cutting blade.
  • the punching knife prefferably designed as a star or contour punch, with which it is possible to punch out flat areas of a film element to be processed. It is expediently possible to assign a pressing surface to each of the cutting edges of the contour or star punch.
  • the Figures 1 to 5 show a preferred exemplary embodiment of the punching tool 11 according to the invention for cutting plastic-based film elements 12.
  • the punching tool 11 according to the invention is described below by way of example using a three-dimensional PET-based film element 12, which can be, for example, yogurt cups.
  • a three-dimensional PET-based film element 12 can be, for example, yogurt cups.
  • the punching tool 11 according to the invention it is possible to cut or assemble completely different plastic-based film elements 12, for example two-dimensional plastic films.
  • the punching tool 11 according to the invention it is possible, for example, to assemble two- or three-dimensional PET, PP, PLA or PVC-based film elements.
  • the aim of stamping the plastic, in particular PET-based, film elements 12 is to assemble the film elements 12 from a virtually endless pipe string into individual groups or individual elements.
  • the punching tool 11 has a punch unit 13, which forms the movable part of the punching tool.
  • a die 14 for receiving the film element 12 to be processed is arranged opposite the punch unit 13, the punch unit 13 relative to the die 14 during a punching stroke taking place in a lifting direction or cutting direction 15 between a starting position ( Figure 1 ) and a processing position 17 ( Figures 3 and 4 ) is mounted relatively movably.
  • the punch unit 13 has a base plate 18, which is shown as an example in a rectangular shape. Several functional components of the punch unit 13 are attached to the base plate 18.
  • the functional components include several punching knife modules 19, each of which has at least one punching knife 20, which is mounted, for example in a height-adjustable manner, on a knife carrier (not shown), the knife carrier being connected to the base plate 18 via a base body 21.
  • the punching knives 20 are each releasably attached to an associated knife seat (not shown) of the knife carrier by means of fastening means.
  • the functionality and structure or the geometry and contour of the punching knife 20 on a single punching knife 20 are explained below.
  • the other punching knives of the punching stamp unit or at least a group of the punching knives of the punching stamp unit 13 are also designed in the same way.
  • Fastening screws are used as fastening means, for example, the associated through holes 22a, 22b ( Figures 2 to 4 ) in the punching knife 20 and are sunk into assigned recesses (not shown) in a bearing section of the knife carrier.
  • a tuning element in the form of a relatively thin tuning disk can be arranged between the seat surface of the knife seat and the punching knife 20.
  • the punching knife 20 has a bearing or clamping section 23, which is penetrated transversely to the cutting direction 15 by the two through holes 22a, 22b. As already described above, the punching knife 20 is fastened to the associated knife seat of the knife carrier via the clamping section 23 and the through holes 22a, 22b using suitable fastening screws.
  • a cutting wedge 24 adjoins the clamping section 23 along the cutting direction 15, at the lower end of which a cutting blade 25 is formed or arranged.
  • the cutting wedge 24 has a first wedge surface 26 facing the die 14 and a second wedge surface 27 aligned obliquely to the first wedge surface 26 and facing away from the die 14.
  • the blade surfaces of the cutting blade are preferably aligned parallel to one another.
  • the cutting blade 25 has a first blade surface 28 facing the die 14 and a second blade surface 29 aligned parallel to the first blade surface 28 and facing away from the die 14.
  • a cutting edge 30 which is designed to create a cutting line in the film element 12 to be processed.
  • the cutting edge 30 is designed as a straight, uncontoured cutting edge over its edge length.
  • other types of cutting edges for example those with a sawtooth-like cutting contour.
  • the cutting edge itself to be wedge-shaped, for example by two mutually converging cutting edge sections which, for example, form a cutting edge wedge in the middle.
  • An essential aspect of the invention is that the second blade surface 29 is adjoined by a pressing surface 33 which extends transversely to the cutting direction 15 and which is downstream of the cutting edge 30 during the cutting process and can be brought into contact with a top side 31 of the part 32 of the film element 12 being processed that is facing away from the die 14 .
  • the pressing surface 33 is aligned at least substantially at right angles, in particular at right angles to the second blade surface 29. As further in Figure 5 shown is the course of the oblique second wedge surface 27 up to the cutting edge 30 interrupted by the pressing surface 33 forming a shoulder or step.
  • the Figures 1 to 4 show a first embodiment of the punching knife 20.
  • the punching knife 20 is a monolith, for example made of tool steel or hard metal.
  • the punching knife 20 can be provided with a surface coating.
  • the functional sections of the punching knife i.e. the wedge surfaces 26, 27, the cutting blade 25 with the blade surfaces 28, 29, the cutting edge 30 and the pressing surface 33 are also formed during the production of the punching knife.
  • the Figure 5 shows a second embodiment of the punching knife.
  • the punching knife 20 is designed in several parts, with a plate-shaped cutting blade element 34, which can consist, for example, of a relatively thin, in particular very stiff, blade suitable for a cutting process, and a wedge-shaped blade carrier 35, on which the cutting blade element 34 can be attached by means of suitable fastening means is attached that a front lower end of the blade carrier 35 forms the pressing surface 33 and a projection of the cutting blade element 34 beyond the lower end of the blade carrier 35 forms the cutting blade 25.
  • a plate-shaped cutting blade element 34 which can consist, for example, of a relatively thin, in particular very stiff, blade suitable for a cutting process
  • a wedge-shaped blade carrier 35 on which the cutting blade element 34 can be attached by means of suitable fastening means is attached that a front lower end of the blade carrier 35 forms the pressing surface 33 and a projection of the cutting blade element 34 beyond the lower end of the blade carrier 35 forms the cutting blade 25.
  • a cutting edge width b1 of the cutting edge 30 extending transversely to the cutting direction 15 is smaller than a pressing surface width b2 of the pressing surface 33 extending transversely to the cutting direction 15.
  • the ratio of cutting edge width to pressing surface width b1/b2 is in the range 0.1 to 0.8, in particular 0.5 to 0.7.
  • a blade surface height h1 of the second blade surface 29 extending from the cutting edge 30 to the pressing surface 33 is greater than or equal to the pressing surface width b1.
  • the ratio of blade surface height to pressing surface width h1/b2 is in the range from 1.0 to 5.0, in particular 1.5 to 3.0.
  • this ratio can be changed subsequently, for example by changing the position of the cutting blade element 34 with respect to the blade carrier 35, so that the projection of the cutting blade element 34 beyond the lower end of the blade carrier 35 can be varied.
  • the method according to the invention for cutting plastic-based film elements using the punching tool 11 according to the invention takes place according to the following steps: First, the punch unit 13 is in the raised starting position 16. Depending on the manufacturing task, groups of punching knives are then arranged so that, for example, a group of four, for example four yogurt cups, or other groupings can be cut out of the film element 12 to be processed.
  • the film element 12 to be processed is inserted into the die 14.
  • the die 14 has a die cavity 36 into which the punching knife 20 can move during the cutting process.
  • the punch unit 13 and the die 14 are relative to one another moved, for example by moving the punch unit 13 downwards towards the die 24.
  • the cutting wedge 24 and here in particular the cutting length with the cutting edge 30 arranged on the underside comes into contact with the top of the film element 12 to be processed and the cutting edges 30 of the punching knives 20 each produce cutting lines in the film element 12.
  • the punch unit 13 is moved further downwards and moves further into the die cavity 36 of the die 34, whereby the pressing surface 33 of a respective punching knife 20 comes into contact with the top side 31 of the part 32 of the film element 12 to be processed facing away from the die and this Part 32 presses further into the matrix cavity 36.
  • cutting blades 25 that have become blunter during the punching process can also be used, since the turning process ensures reliable separation of the film element to be processed. This increases the service life of the punching knives 20.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (12)

  1. Outil de poinçonnage pour la coupe d'éléments de feuille (12) à base de matière plastique, avec une unité de poinçonnage (13) qui présente plusieurs supports de couteau, auxquels respectivement au moins une poinçonneuse (20) présentant un coin de coupe (24) se rétrécissant vers une lame de coupe (25) avec un bord de coupe (30), et avec une matrice (14) associée à l'unité de poinçonnage (13), opposée à celle-ci pour le logement de l'élément de feuille (12) à usiner, dans lequel l'unité de poinçonnage (13) est logée de manière relativement mobile par rapport à la matrice (14) lors d'une course de poinçonnage s'effectuant dans un sens de coupe (15) entre une position de départ (16) et une position d'usinage (17), dans lequel les coins de coupe (24) de la poinçonneuse (20) s'enfoncent dans la position d'usinage (17) dans l'élément de feuille (12) à usiner et génèrent le long d'une longueur de bord du bord de coupe (30) une ligne de coupe dans l'élément de feuille (12), caractérisé en ce que la lame de coupe (25) présente une première surface de lame (28) tournée vers la matrice (14) et une seconde surface de lame (29) éloignée de la matrice (14), dans lequel une surface de pression (33) s'étendant transversalement au sens de coupe (15), logée en aval lors du processus de coupe du bord de coupe (30) et pouvant être amenée en appui contre un côté supérieur (31) de la partie (32) éloignée de la matrice (14) de l'élément de feuille (12) à usiner est contiguë à la seconde surface de lame (29).
  2. Outil de poinçonnage selon la revendication 1, caractérisé en ce que la première surface de lame (28) est orientée parallèlement à la seconde surface de lame (29).
  3. Outil de poinçonnage selon la revendication 1 ou 2, caractérisé en ce que la surface de pression (33) est orientée au moins sensiblement à angle droit par rapport à la seconde surface de lame (29).
  4. Outil de poinçonnage selon l'une des revendications précédentes, caractérisé en ce qu'une largeur de bord de coupe (b1) s'étendant transversalement au sens de coupe (15) du bord de coupe (30) est inférieure à une largeur de surface de pression (b2) s'étendant transversalement au sens de coupe (15) de la surface de pression (33).
  5. Outil de poinçonnage selon la revendication 4, caractérisé en ce que le rapport entre la largeur de bord de coupe et la largeur de surface de pression b1/b2 se trouve dans la plage de 0,1 à 0,8, en particulier de 0,5 à 0,7.
  6. Outil de poinçonnage selon l'une des revendications précédentes, caractérisé en ce qu'une hauteur de surface de lame (h1) s'étendant du bord de coupe (30) à la surface de pression (33) de la seconde surface de lame (29) est supérieure ou de même taille que la largeur de surface de pression (b1).
  7. Outil de poinçonnage selon la revendication 6, caractérisé en ce que le rapport entre la hauteur de surface de lame et la largeur de surface de pression h1/b2 se trouve dans la plage de 1,0 à 5,0, en particulier de 1,5 à 3,0.
  8. Outil de poinçonnage selon l'une des revendications précédentes, caractérisé en ce que le coin de coupe (24) présente une première surface de coin (26) tournée vers la matrice (14) et une seconde surface de coin (27) éloignée de la matrice (14), orientée en biais par rapport à la première surface de coin (26), dans lequel l'étendue de la seconde surface de coin (27) est interrompue jusqu'au bord de coupe (30) par la surface de pression (33) formant un épaulement.
  9. Outil de poinçonnage selon la revendication 8, caractérisé en ce que la première surface de lame (28) de la lame de coupe (25) forme une section partielle de la première surface de coin (26) qui est orientée dans le sens de coupe (15) en alignement sur la première surface de coin (26).
  10. Outil de poinçonnage selon l'une des revendications précédentes, caractérisé en ce que la poinçonneuse (20) est réalisée d'un seul tenant et la lame de coupe (25) et la surface de pression (33) sont formées lors de la fabrication de la poinçonneuse (20).
  11. Outil de poinçonnage selon l'une des revendications 1 à 9, caractérisé en ce que la poinçonneuse (20) est réalisée en plusieurs parties, avec un élément de lame de coupe (34) en forme de plaque et un porte-lame (35) en forme de coin, auquel l'élément de lame de coupe (34) est fixé de telle manière qu'une extrémité inférieure côté avant du porte-lame (35) forme la surface de pression (33) et un porte-à-faux de l'élément de lame de coupe (34) forme au-delà de l'extrémité inférieure du porte-lame (35) la lame de coupe (25).
  12. Procédé de coupe d'éléments de feuille (12) à base de matière plastique en utilisant un outil de poinçonnage (11) selon l'une des revendications précédentes, le procédé présentant les étapes suivantes :
    - l'insertion de l'élément de feuille (12) à usiner dans la matrice (14),
    - le mouvement relatif de l'unité de poinçonnage (13) et de la matrice (14) l'une par rapport à l'autre,
    - l'introduction de lignes de coupe dans l'élément de feuille (12) par les bords de coupe (30) de la poinçonneuse (20),
    - la poursuite du mouvement de l'unité de poinçonnage (13) dans une cavité de matrice (36) de la matrice (14), dans lequel la surface de pression (33) d'une poinçonneuse (20) respective parvient en appui contre le côté supérieur (31) de la partie (32) éloignée de la matrice (14) de l'élément de feuille (12) à usiner et enfonce cette partie (32) davantage dans la cavité de matrice (36).
EP22160637.9A 2021-04-16 2022-03-08 Outil de poinçonnage Active EP4074478B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021203789.5A DE102021203789B3 (de) 2021-04-16 2021-04-16 Stanzwerkzeug

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EP4074478A1 EP4074478A1 (fr) 2022-10-19
EP4074478B1 true EP4074478B1 (fr) 2024-01-24

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EP (1) EP4074478B1 (fr)
DE (1) DE102021203789B3 (fr)
ES (1) ES2976409T3 (fr)

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Publication number Priority date Publication date Assignee Title
CN115723181B (zh) * 2022-12-02 2023-09-19 昆山佳合纸制品科技股份有限公司 一种纸板用切割装置
CN116984474B (zh) * 2023-09-20 2023-12-19 山西中航锦恒科技有限公司 一种电缆加工用冲孔裁切装置

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FR3098799B1 (fr) * 2019-07-17 2021-06-18 Synerlink Equipement et méthode pour former une prédécoupe dans un pack de pots de produit alimentaire

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ES2976409T3 (es) 2024-07-31
DE102021203789B3 (de) 2022-08-11
EP4074478A1 (fr) 2022-10-19

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