EP3103887A1 - Maschine für die kontinuierliche lederfärbung - Google Patents

Maschine für die kontinuierliche lederfärbung Download PDF

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Publication number
EP3103887A1
EP3103887A1 EP16171412.6A EP16171412A EP3103887A1 EP 3103887 A1 EP3103887 A1 EP 3103887A1 EP 16171412 A EP16171412 A EP 16171412A EP 3103887 A1 EP3103887 A1 EP 3103887A1
Authority
EP
European Patent Office
Prior art keywords
leather
dyeing
machine
items
rollers
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.)
Granted
Application number
EP16171412.6A
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English (en)
French (fr)
Other versions
EP3103887B1 (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
Original Assignee
GE MA TA SpA
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Filing date
Publication date
Application filed by GE MA TA SpA filed Critical GE MA TA SpA
Publication of EP3103887A1 publication Critical patent/EP3103887A1/de
Application granted granted Critical
Publication of EP3103887B1 publication Critical patent/EP3103887B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present finding concerns a machine for continuous dyeing of leather items, according to the general part of claim 1.
  • a first method for dyeing leather items is carried out by using drums containing a mixture of water and dye.
  • the dye transfers from the water to the leather item, thus carrying out homogeneous dyeing of the leather items themselves.
  • immersion dyeing process based on the concept of impregnation and subsequent squeezing of the leather items that, transported sandwiched between two sliding belts, are firstly immersed in a dye solution, contained in the horizontal tank and then are squeezed by passing between two cylinders arranged at the outlet on said tank.
  • the dye is essentially applied onto the leather items, but it is not possible to control the amount of dye deposited on the leather item; all of this becomes even more relevant when the dye must be expressly of the so-called "surface dye” type, in that it only engages the outer surfaces thereof and not the entire section of the leather item.
  • the two rollers In such a machine it is provided for it to be possible for the two rollers to have elevations of the spiral-shaped type or, alternatively, bands, brushes, pegs or pins on them.
  • Such elements have the purpose of stretching out the leather items subjected to dyeing, reducing the possibility of creases or rough areas forming on the leather items themselves. In such a device, however, it is not possible to precisely control the amount of dye deposited on the two opposite surfaces of the leather items.
  • the aim of the present finding is to make a machine for dyeing leather items that is free of the drawbacks of similar known machines.
  • the aim of the finding is to make a machine for continuous dyeing of leather items that makes it possible to control, for every processing operation, the amount of dye deposited at the same time on the two surfaces of the leather item.
  • a further aim of the finding is to make a machine for dyeing leather items that, while substantially reducing water consumption, still transfers all of the dye onto the leather item.
  • a further aim of the finding is to make a machine for dyeing leather items that is simple to build, easy to use and has low bulk.
  • Such aims are obtained by making a machine for dyeing leather items that is characterised in that the leather item is passed between two opposite engraved rollers, rotating in the same direction as that of forward motion of the leather items, which take care of depositing dye on the two surfaces of the aforementioned leather item.
  • the two rollers rotating about mutually parallel rotation axes that are perpendicular with respect to the direction of forward motion of the leather item, are provided on their surface with an incision, which allows a predetermined amount of dyeing liquid to be held that, in pressing contact with the leather item, is transferred and is absorbed by the aforementioned leather item, to carry out the dyeing operation.
  • the dyeing machine As can be seen in fig. 1 , the dyeing machine, indicated with reference numeral 100, consists of two engraved rollers, arranged opposite and parallel to one another 1 and 2, between which the leather item "P" slides, pulled forwards by the rotation in "synchronous" mode (V1, V2), i.e. in the same direction as the direction of forward motion of the leather item "P".
  • Each of the two rollers has the engraved outer surface, 3 and 4 respectively, licked with a dyeing product 5 and 6, contained in a tank 7 and 8, so that, when said surfaces 3 and 4 come into contact with the leather item "P" in the intermediate processing step, the transfer of a liquid film 9 and 10 of dyeing product 5 and 6 onto two corresponding surfaces of the leather item 11 and 12 takes place, so that, through the effect of the compression to which the leather item must be subjected to ensure it is pulled, the dyeing product is deposited on the surface or penetrates inside the fibres, respectively carrying out the "surface dyeing" or the "deep dyeing” of the aforementioned leather item (indicated with "P1" after the dyeing step), as a function of the type of engraving that determines the amount thereof.
  • the rollers 1 and 2 have the outer surface 3 or 4 suitably engraved/knurled, with the formation of pits or other cavities suitable for transferring the liquid film of dyeing product onto the surfaces of the leather items; in practice, the type and depth of the engraving/knurls on the surface of the rollers determine the amount of dyeing liquid film on the surface of the leather items, substantially as a function of their size in the diametral direction.
  • at least one of the two rollers consists of a metal drum coated with a layer of highly deformable material, which makes it possible to make regular contact between roller and leather item, also in the presence of non-uniform thicknesses and on surfaces 11 and 12 that have protruding areas and recesses.
  • the other opposite roller can be entirely made from metal, with the surface suitably engraved, to transfer the liquid product onto the surface of the leather item in contact with the roller itself.
  • the tank 7 of the upper roller 1 is obtained through a doctor blade 13, which has the function of scraping the excess amount from the engraved surface of dyeing liquid film 9, whereas the tank 8 consists of a tray 14, where the lower roller 2 partially immerses, associated with a doctor blade 15, which scrapes the excess liquid product from the surface 10.
  • the two rollers 1 and 2 rotate at variable speed and are mounted on mobile supports (not represented) that adjust the crushing pressure on the leather item "P", so as to be able to ensure uniform contact and obtain optimal dyeing of every type of leather item treated.
  • the machine 100 for dyeing leather items "P" mounts a carousel 20, adapted for supporting a plurality of interchangeable upper rollers 1 with different engravings as a function of the amount of dye to be transferred onto the surfaces of the leather items and comprises a closed recirculation circuit of the dyeing product, indicated with reference numeral 30, which foresees a collection tray 31, coupled with the upper roller 1 and an overflow device 32, coupled with the lower roller 2, for recovering the excess dyeing product, which is collected in a tank 33 from where, through a pump 34, it is sent back to the tanks 7 and 8.
  • Another embodiment of the machine as can be seen in fig. 4 , not for restrictive purposes, foresees two closed recirculation circuits of the dye that are independent from one another 30.1 and 30.2, one for the upper roller 1 and the other for the lower roller 2 consisting of the tray 31 of the roller 1 and the tray 14 of the roller 2 for recovering the excess dyeing products that are collected in the tanks 33.1 and 33.2 from which, through two pumps 34.1 and 34.2, they are sent independently back to the tanks 7, 8.
  • the machine is completed upstream with an external apparatus 40, to facilitate the introduction of the leather item "P" that, as a non-limiting example, consists of two opposite belts, which stretch out and transport the leather item up to the narrow area of the two rollers 1 and 2.
  • an external apparatus 40 to facilitate the introduction of the leather item "P" that, as a non-limiting example, consists of two opposite belts, which stretch out and transport the leather item up to the narrow area of the two rollers 1 and 2.
  • a conveyor belt 60 takes away the processed leather items "P1".

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP16171412.6A 2015-06-11 2016-05-25 Maschine für die kontinuierliche lederfärbung Active EP3103887B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB20151051 2015-06-11

Publications (2)

Publication Number Publication Date
EP3103887A1 true EP3103887A1 (de) 2016-12-14
EP3103887B1 EP3103887B1 (de) 2019-03-27

Family

ID=54150529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16171412.6A Active EP3103887B1 (de) 2015-06-11 2016-05-25 Maschine für die kontinuierliche lederfärbung

Country Status (2)

Country Link
EP (1) EP3103887B1 (de)
TR (1) TR201907080T4 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700037050A1 (it) * 2017-04-04 2018-10-04 Ge Ma Ta Spa Apparato per la deposizione in continuo di due differenti sostanze chimiche su una pelle e metodo per la deposizione in continuo
IT201800007456A1 (it) * 2018-07-24 2020-01-24 Macchina per la rifinizione di superfici laminari flessibili di rivestimento di oggetti
CN112029923A (zh) * 2020-09-29 2020-12-04 刘佳 一种节能型皮具制品用高效压印装置
CN115434156A (zh) * 2022-09-26 2022-12-06 黄智雄 一种雕刻人造革底色的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762190A (en) 1968-08-26 1973-10-02 Staub & Co Ag Apparatus for treating hide and leather pieces in tanneries
DE9400543U1 (de) * 1993-01-18 1994-03-03 GE.MA.TA. S.p.A., Trissino, Vicenza Vorrichtung zur Endbearbeitung von Häuten, Fellen u.dgl.
EP1441037A1 (de) * 2003-01-24 2004-07-28 Industrie Meccaniche Bergi-OFB S.p.A. Auftragmaschine für Häute
EP2154255A1 (de) * 2008-08-05 2010-02-17 GE.MA.TA. S.p.A. Maschine für die Zurichtung über Walzen von naturfellen, Leder und Ähnlichem, mit der sogenannten "Synchronmethode" betrieben
EP2177632A1 (de) * 2008-10-09 2010-04-21 GE.MA.TA. S.p.A. Maschine zur Walzennachbehandlung von Leder, Kunstleder, Webwaren, künstlichen Geweben und ähnlichen.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762190A (en) 1968-08-26 1973-10-02 Staub & Co Ag Apparatus for treating hide and leather pieces in tanneries
DE9400543U1 (de) * 1993-01-18 1994-03-03 GE.MA.TA. S.p.A., Trissino, Vicenza Vorrichtung zur Endbearbeitung von Häuten, Fellen u.dgl.
EP1441037A1 (de) * 2003-01-24 2004-07-28 Industrie Meccaniche Bergi-OFB S.p.A. Auftragmaschine für Häute
EP2154255A1 (de) * 2008-08-05 2010-02-17 GE.MA.TA. S.p.A. Maschine für die Zurichtung über Walzen von naturfellen, Leder und Ähnlichem, mit der sogenannten "Synchronmethode" betrieben
EP2177632A1 (de) * 2008-10-09 2010-04-21 GE.MA.TA. S.p.A. Maschine zur Walzennachbehandlung von Leder, Kunstleder, Webwaren, künstlichen Geweben und ähnlichen.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700037050A1 (it) * 2017-04-04 2018-10-04 Ge Ma Ta Spa Apparato per la deposizione in continuo di due differenti sostanze chimiche su una pelle e metodo per la deposizione in continuo
IT201800007456A1 (it) * 2018-07-24 2020-01-24 Macchina per la rifinizione di superfici laminari flessibili di rivestimento di oggetti
EP3599289A3 (de) * 2018-07-24 2020-03-04 DMS International Societa' a Responsabilita' Limitata Semplificata Maschine zur fertigbearbeitung von flexiblen flächigen oberflächen, die als beschichtung von gegenständen verwendet werden
CN112029923A (zh) * 2020-09-29 2020-12-04 刘佳 一种节能型皮具制品用高效压印装置
CN112029923B (zh) * 2020-09-29 2022-06-28 济南仙妮特实业有限公司 一种节能型皮具制品用高效压印装置
CN115434156A (zh) * 2022-09-26 2022-12-06 黄智雄 一种雕刻人造革底色的方法

Also Published As

Publication number Publication date
TR201907080T4 (tr) 2019-06-21
EP3103887B1 (de) 2019-03-27

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