EP3868898B1 - Maschine zum veredeln von fellen - Google Patents

Maschine zum veredeln von fellen Download PDF

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Publication number
EP3868898B1
EP3868898B1 EP21155427.4A EP21155427A EP3868898B1 EP 3868898 B1 EP3868898 B1 EP 3868898B1 EP 21155427 A EP21155427 A EP 21155427A EP 3868898 B1 EP3868898 B1 EP 3868898B1
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EP
European Patent Office
Prior art keywords
roller
machine
belt
rubber
hides
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
EP21155427.4A
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English (en)
French (fr)
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EP3868898A1 (de
Inventor
Gianni Maitan
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.)
GE MA TA SpA
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GE MA TA SpA
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Filing date
Publication date
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C14B1/56—Ornamenting, producing designs, embossing
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/28—Machines for treating leather combined with devices for measuring and printing
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/06—Work feeding or clamping devices
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B7/00—Special leathers and their manufacture
    • C14B7/06—Leather webs built up of interengaged strips or pieces, e.g. by braiding
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
    • 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
    • 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
    • B05C1/0817—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 characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • 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
    • B05C1/0826—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 the work being a web or sheets
    • B05C1/083—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 the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • 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
    • B05C1/0856—Reverse coating rollers

Definitions

  • the present invention relates to a machine for finishing hides, according to the general part of claim 1.
  • FIG. 1 A machine for finishing hides of a known type is shown in Figure 1 .
  • roller machines are used, commonly known as coating machines, in which the hides P are transported by a rubber belt 1 and pressed against an opposite engraved roller 2, which deposits onto the surface of the hide an even film of liquid L, previously spread out on said engraved roller by one or more blades 9.
  • the engraved roller can rotate in "synchro", that is in the same direction as the direction of advancement of the hide or in "reverse”, that is in the direction opposite to the aforesaid direction of the hide.
  • the perfect success of the hide finishing operation depends on many factors, among which the predominant ones are a regular entry of the hide into the restricted zone, that is the one included between the engraved roller and the underlying roller or conveyor belt and a well determined compression force of the portion of hide which comes into contact, in a substantially tangent manner with the surface of the aforesaid engraved roller.
  • the uniformity of this compression force when the roller coating machine is equipped with a conveyor rubber belt 1 depends on the tension of the belt itself to ensure the winding thereof on the first roller 4, acting as a contrast medium inside said rubber belt 1 mentioned above and opposite to the engraved roller 2.
  • a hide detaching roller 17 is provided, actually consisting of a cylindrical element with a modest toothing, which rotates in the same direction with respect to the second return roller and therefore with peripheral speeds of the proximal zones of these two rollers having opposite directions. Said hide detaching roller facilitates the detachment of the hide from the rubber belt and its delivery to the next transport element for the drying step.
  • Another measure to facilitate the detachment of the hides from the conveyor belt consists in providing a second roller with a diameter as small as possible.
  • the outer surface of the belt at the second roller with an extremely small diameter is necessarily destined to expand longitudinally; consequently, due to said longitudinal expansion of the belt, a sliding between the meat side of the hide and said belt is created, facilitating the detachment of said hide from the belt itself.
  • this reduction in the diameter of the second roller also causes an intrinsic mechanical weakness of said roller which tends to flex excessively, since the belt must necessarily be stretched to be moved, with an unacceptable flexibility of the roller, especially at its central part.
  • rollers which are not perfectly cylindrical, but are slightly convex at their central part, so as to compensate for the longitudinal flexibility of the roller.
  • the roller has a common angular speed at the whole of its development, but a peripheral speed which is greater at the zones with a greater radius. This entails the fact that, at the central zone, the roller slides on the inner part of the belt with unacceptable vibrations and wear of the belt itself. Therefore, this measure is also rarely used.
  • Object of the present invention is to realise a machine for finishing hides of the type described above which is capable of obviating the drawbacks manifested by similar products of known type.
  • object of the invention is to realise a machine for finishing hides capable, in particular, of delivering the hides to the subsequent transport devices for the drying step without minimally soiling said hides, in particular at their meat side.
  • Further object of the invention is to provide a machine of this type, which is simple from the constructive point of view, practical and safer for the operator.
  • the second roller is equipped with at least one supporting element that is integral with the machine frame; in particular, said supporting element is positioned between the ends of said second roller to increase stiffness thereof with respect to the longitudinal flexibility.
  • a machine for finishing hides of known type provides that a hide P is adduced by opposite belts 10, 11, which define a conveying channel 12, to a zone in which there is a rubber conveyor belt 1 as well as an engraved roller 2, which presses against the aforesaid, which deposits onto the surface of said hide P an even film of liquid L, previously spread out on said engraved roller by one or more blades 9.
  • the belt 1 is towed by a first roller 4 and returned by a second roller 5.
  • the hide is deposited on a subsequent conveyor means 6, in most cases consisting in fact of a suitable belt.
  • rollers 4 and 5 are a drive roller, while the other one is an idle roller and in particular the roller 4 is a drive roller and the roller 5 is an idle roller; suitable washing and drying means 3 are also provided, which operate continuously on the outer surface of the belt 1 of the machine. All this constitutes a prior art and therefore a state of the art of the present invention.
  • a suitable hide detaching roller 17 which, as already said previously, is constituted by a cylindrical element with a modest toothing which rotates in the same direction both with respect to the second roller 5 and to a roller 18 which moves the conveyor means 6 constituted, in most cases, by a suitable belt.
  • the second roller 5 is in particular provided with a supporting element 13 that is integral with the machine frame, positioned between the ends of said second roller 5 to increase stiffness thereof with respect to the longitudinal flexibility.
  • this supporting element is integral with a rod 14 that is parallel to the second roller 5, which is in turn hinged upon an element 15 integral with the machine fixed frame.
  • said second roller 5 is hinged upon said element 15.
  • Figures 8 and 9 also highlight the above; in particular, it is clearly evident that it is possible to configure a single removable supporting frame with respect to the machine, so as to ease assembling/disassembling operations, as already stated above.
  • the machine according to the invention can comprise more return rollers, and among them it can provide an idle roller 8 (see in particular Figure 2 ) which has means adapted to change positioning thereof; based on said positioning, said roller 8 is in particular adapted to modify the point of contact of the rubber belt 1 with the overlying engraved roller 2.
  • the ratio between the diameter of the first roller 4 and the diameter of the second roller 5 is equal to or greater than 5.
  • the belt 1 is made of rubber, which advantageously has a hardness lower than 40 Shore A. It is also possible to provide for one or more layers of artificial or natural elements to be present on the inner surface of the rubber. Finally, it is advantageously provided that the rubber belt 1 has a thickness Sp of the rubber portion, variable from 8 to 25 mm.
  • a plurality of supporting elements 13 is provided; as shown in these figures, they are arranged equally spaced apart between the ends of the second roller 5.
  • the device according to the invention is able to meet the objects previously proposed, thanks to the fact that the at least one supporting element 13 present at the second roller 5 is able to clearly obviate the flexibility of the roller 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Claims (13)

  1. MASCHINE ZUR ENDBEARBEITUNG VON HÄUTEN, bei der die Häute durch ein Gummiband (1) transportiert und gegen eine gegenüberliegende gravierte Walze (2) gedrückt werden, die auf die Oberfläche der Haut (P) einen gleichmäßigen Flüssigkeitsfilm (L) aufträgt, der zuvor auf der gravierten Walze (2) durch eine oder mehrere Klingen (9) verteilt wurde, wobei das Band (1) von einer ersten Walze (4) gezogen und von einer zweiten Walze (5) zurückgeführt wird, an der die Haut auf einem nachfolgenden Fördermittel (6) abgelegt wird, wobei eine der ersten und zweiten Walzen (4, 5) eine Antriebswalze und die andere eine Leerlaufwalze ist,
    wobei die Maschine dadurch gekennzeichnet ist, dass die zweite Walze (5) mit mindestens einem Stützelement (13) versehen ist, das fest mit einem festen Maschinenrahmen verbunden ist und zwischen den beiden Enden der zweiten Walze (5) angeordnet ist, um deren Steifigkeit in Bezug auf die Längsflexibilität zu erhöhen.
  2. MASCHINE nach Anspruch 1, dadurch gekennzeichnet, dass sie mit Wasch- und Trocknungsmitteln (3) versehen ist, die kontinuierlich auf der Außenfläche des Maschinenbandes wirken.
  3. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Mehrzahl von Umlenkwalzen aufweist.
  4. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Mehrzahl von Stützelementen (13) aufweist, die in gleichem Abstand zwischen den Enden der zweiten Walze (5) angeordnet sind.
  5. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine Stützelement mit einer Stange (14) fest verbunden ist, die parallel zur zweiten Walze (5) verläuft, die ihrerseits an einem Element (15) angelenkt ist, das fest mit dem festen Rahmen der Maschine verbunden ist, wobei die zweite Walze (5) an dem Element (15) angelenkt ist.
  6. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die erste Walze (4) eine Antriebswalze ist, während die zweite Walze (5) eine Leerlaufwalze ist.
  7. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die erste Walze (4) eine Leerlaufwalze ist, während die zweite Walze (5) eine Antriebswalze ist.
  8. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Verhältnis zwischen dem Durchmesser der ersten Walze (4) und dem Durchmesser der zweiten Walze (5) gleich oder größer als 5 ist.
  9. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass auf der Innenfläche des Gummibandes (1) eine Leerlaufwalze (8) wirkt, die Mittel aufweist, die geeignet sind, ihre Positionierung zu ändern, wobei die Walze (8) auf der Grundlage dieser Positionierung geeignet ist, den Kontaktpunkt des Gummibandes (1) mit der darüber liegenden gravierten Walze (2) zu ändern.
  10. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Umlenkwalze (5) auf einem Stützrahmen montiert ist, der in Bezug auf die Maschine abnehmbar ist, um die Montage/Demontage zu erleichtern.
  11. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Band (1) aus Gummi mit einer Härte von weniger als 40 Shore A hergestellt ist.
  12. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass eine oder mehrere Schichten aus künstlichen oder natürlichen Elementen auf der inneren Oberfläche des Gummis vorhanden sind.
  13. MASCHINE nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Gummiband (1) eine Dicke (Sp) des Gummiabschnitts aufweist, die zwischen 8 und 25 mm variiert.
EP21155427.4A 2020-02-18 2021-02-05 Maschine zum veredeln von fellen Active EP3868898B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102020000003311A IT202000003311A1 (it) 2020-02-18 2020-02-18 Macchina per la rifinizione di pelli

Publications (2)

Publication Number Publication Date
EP3868898A1 EP3868898A1 (de) 2021-08-25
EP3868898B1 true EP3868898B1 (de) 2022-06-01

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ID=70480718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21155427.4A Active EP3868898B1 (de) 2020-02-18 2021-02-05 Maschine zum veredeln von fellen

Country Status (2)

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EP (1) EP3868898B1 (de)
IT (1) IT202000003311A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200013060A1 (it) * 2022-06-21 2023-12-21 Rotacoat S R L Macchina spalmatrice reversibile per la rifinizione a rullo di pelli e simili

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101003A1 (de) 1990-01-17 1991-07-18 Vipa S R L Studio Progettazion Lederabloesevorrichtung, insbesondere fuer walzen-rotationspigmentiermaschinen
ITVI930004A1 (it) 1993-01-18 1994-07-18 Ge Ma Ta Spa Macchina a rulli per la rifinizione di pelli e simili
GB2318108A (en) 1996-10-11 1998-04-15 Brockway Eng Co Ltd Removable return roller arrangement
EP0997538A2 (de) 1998-10-30 2000-05-03 GE.MA.TA. S.p.A. Maschine zur Endbearbeitung von Haüte und dergleichen
WO2006060862A1 (en) 2004-12-07 2006-06-15 Bhp Billiton Innovation Pty Ltd Roller support frame
WO2013134730A2 (en) 2012-03-08 2013-09-12 Flexible Steel Lacing Company Apparatus and method for tracking conveyor belts
CN205114274U (zh) 2015-11-26 2016-03-30 广州叁立机械设备有限公司 刀口支架机构
IT201700018187A1 (it) 2017-02-17 2018-08-17 Dms Italia S R L Assieme per l'avanzamento e lo scarico di prodotti laminari flessibili e macchina per il trattamento di prodotti laminari flessibili comprendente tale assieme
EP3599289A2 (de) 2018-07-24 2020-01-29 DMS International Societa' a Responsabilita' Limitata Semplificata Maschine zur fertigbearbeitung von flexiblen flächigen oberflächen, die als beschichtung von gegenständen verwendet werden

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101151279B1 (ko) * 2011-11-14 2012-06-14 주경중 피혁원단 습식 코팅 장치 및 방법

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101003A1 (de) 1990-01-17 1991-07-18 Vipa S R L Studio Progettazion Lederabloesevorrichtung, insbesondere fuer walzen-rotationspigmentiermaschinen
ITVI930004A1 (it) 1993-01-18 1994-07-18 Ge Ma Ta Spa Macchina a rulli per la rifinizione di pelli e simili
GB2318108A (en) 1996-10-11 1998-04-15 Brockway Eng Co Ltd Removable return roller arrangement
EP0997538A2 (de) 1998-10-30 2000-05-03 GE.MA.TA. S.p.A. Maschine zur Endbearbeitung von Haüte und dergleichen
WO2006060862A1 (en) 2004-12-07 2006-06-15 Bhp Billiton Innovation Pty Ltd Roller support frame
WO2013134730A2 (en) 2012-03-08 2013-09-12 Flexible Steel Lacing Company Apparatus and method for tracking conveyor belts
CN205114274U (zh) 2015-11-26 2016-03-30 广州叁立机械设备有限公司 刀口支架机构
IT201700018187A1 (it) 2017-02-17 2018-08-17 Dms Italia S R L Assieme per l'avanzamento e lo scarico di prodotti laminari flessibili e macchina per il trattamento di prodotti laminari flessibili comprendente tale assieme
EP3599289A2 (de) 2018-07-24 2020-01-29 DMS International Societa' a Responsabilita' Limitata Semplificata Maschine zur fertigbearbeitung von flexiblen flächigen oberflächen, die als beschichtung von gegenständen verwendet werden

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IT202000003311A1 (it) 2021-08-18
EP3868898A1 (de) 2021-08-25

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