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EP3861143A1 - Dispositif, unité de changement, kit et procédé de réduction des odeurs de cuir tanné - Google Patents

Dispositif, unité de changement, kit et procédé de réduction des odeurs de cuir tanné

Info

Publication number
EP3861143A1
EP3861143A1 EP19818023.4A EP19818023A EP3861143A1 EP 3861143 A1 EP3861143 A1 EP 3861143A1 EP 19818023 A EP19818023 A EP 19818023A EP 3861143 A1 EP3861143 A1 EP 3861143A1
Authority
EP
European Patent Office
Prior art keywords
odor
treatment room
leather
treatment
reservoir
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
EP19818023.4A
Other languages
German (de)
English (en)
Other versions
EP3861143B1 (fr
Inventor
Jens Fennen
Rodolfo Ampuero
Nina Schulte-Gauczinski
Lorenzo Mejias
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.)
TFL Ledertechnik GmbH and Co KG
Original Assignee
TFL Ledertechnik GmbH and Co KG
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 TFL Ledertechnik GmbH and Co KG filed Critical TFL Ledertechnik GmbH and Co KG
Publication of EP3861143A1 publication Critical patent/EP3861143A1/fr
Application granted granted Critical
Publication of EP3861143B1 publication Critical patent/EP3861143B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • C14B3/00—Milling leather
    • 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
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds

Definitions

  • the invention relates to a device for reducing the odor of tanned leather.
  • Another aspect is the energy-saving drying of the leather, since meanwhile the tanned leather is often dried at lower temperatures than before, so that
  • the invention is therefore based on the object To reduce the odor pollution of tanned leather, whereby this should be done in a resource-saving and sustainable manner.
  • the at least one odor reduction reservoir having at least one odor-neutralizing substance, a gas exchange connection between the
  • the device according to the invention makes it possible for odors to be reduced during the usual process steps required in leather production. This has the advantage that it is possible to integrate the odor reduction into the usual process sequence in leather production without having to plan additional time for further steps. Another advantage of the device according to the invention is that the odor reduction can thus be carried out during a dry phase.
  • dry phase can refer to the fact that the leather is not in this phase
  • Liquid phase such as a liquor, but in a room that is predominantly or almost completely filled with gas, for example air
  • Odor can therefore only be reduced due to a gas exchange. This can reduce the odor of the leather without adding water and / or water
  • the device enables a particularly resource-saving and sustainable odor reduction respectively. According to a training that by
  • the odor-neutralizing substance is present in aqueous solution.
  • the drying phase can relate to the condition of the leather.
  • Treatment room has a nebulizer, which is set up to a fine mist from small
  • Nebulization device can serve, for example, to control the moisture content of the treated leather during the
  • Moisture content of leather can be from 10-20%, preferably about 16%. After all, is yourself
  • dry leather is not water-free and tends to
  • the at least one nebulization device can prevent unwanted dust formation, which is below a critical level
  • Nebulization device of the treatment room can be any suitable Nebulization device of the treatment room.
  • the nebulizing device can be set up and / or used to
  • An odor-neutralizing substance in the sense of the invention can generally refer to sorbent substances (sorbents).
  • substances such as Absorbents fall that allow adsorption and / or absorption of odors. Odors can thus be bound by the odor-neutralizing substance.
  • the term odor-neutralizing substance can also include substances that actively activate odors, for example through reactions and / or
  • Odor reduction reservoir can be arranged outside the treatment room. It can in particular be provided that at least one gas exchange line between the
  • Treatment room and the at least one odor reduction reservoir is configured. This has the advantage that the treatment of the leather in the treatment room can take place at the same time as the odor reduction, without the treatment room, for example, being of conventional design
  • Odor reduction in existing processes for leather production For example, gas exchange is often provided during the drying of leather in order to be able to dry the leather more quickly, for example in order to release it into the environment
  • the treatment room can be designed to be movable in such a way that leather placed therein is also moved during operation.
  • Movement of the leather makes it possible to reduce odors more effectively, as odors are also more difficult to access are treatable.
  • the treatment room can be designed as a fulling container for fulling dry leather.
  • it can be designed as a drum or drum.
  • the or another treatment room can be used as
  • Drying room for drying tanned leather For example, the treatment room can be used as
  • Drying tunnel be designed.
  • an opening of the treatment room can be closed, in particular can be closed airtight. This can be done, for example, via a locking unit, which is designed, for example, as a door or hatch. This helps prevent particles whirled up by the treatment from escaping and being inhaled by a bystander.
  • a further embodiment can provide that the at least one odor reduction reservoir is arranged in a chamber which is separated from the treatment room and is connected to the treatment room via at least one gas exchange line, for example the one already mentioned or another gas exchange line.
  • the chamber can be closed or lockable in the position of use. For example, at least closed to the outside and / or to the treatment room. It can therefore be provided that a
  • gas exchange line and chamber is formed, in which a gas stream, in particular a circulating gas stream, can be generated.
  • a gas stream in particular a circulating gas stream
  • the chamber In operation, i.e. when the treatment room is moving, the chamber is not moved, however, but remains stationary.
  • a filter in particular a filter, can be installed in a chamber, for example the one already mentioned or an additional chamber
  • Particulate filter to be arranged.
  • a filter and / or a further filter can be in one
  • Gas exchange line for example the one previously
  • gas exchange line can be arranged. It is thus possible to filter out particles from the gas stream in order to be able to reduce the dust load, in particular within the treatment room. It is also possible by means of the filter to remove precipitating solids from the gas stream, which are released, for example, by a nebulizing device within the treatment room and / or the gas exchange line, for example in aqueous solution. This in particular prevents the solids from being deposited on the leather.
  • the nebulizing device can thus be arranged in front of the filter in the gas flow direction.
  • odor-reducing substances such as in particular
  • Cyclodextrins are filtered out. Settling of these substances on the leather can thus be avoided better. In addition, the overall dust development can be reduced if at least one filter is arranged within the gas stream.
  • the device can have a gas exchange device by means of which an active gas exchange between the
  • the gas exchange device can be designed, for example, as a fan and / or as a compressor.
  • the at least one odor reduction reservoir is arranged within the treatment room. It can be the odor-neutralizing substance
  • Exchange unit can be arranged. A particularly simple exchange of the odor-neutralizing substance is thus possible by exchanging the exchange unit when a maximum period of use has been reached.
  • the at least one odor-reducing reservoir can have a holder and a, for example the previously mentioned, insertable and replaceable exchange unit with the at least one odor-neutralizing substance.
  • the exchange unit can be used as a cartridge and / or as a pad
  • the odor neutralizing substance must be dry.
  • the at least one odor-neutralizing substance can be recyclable, for example even compostable.
  • the odor neutralizing substance can be dry.
  • the at least one odor-neutralizing substance can be recyclable, for example even compostable.
  • odor neutralizing substance can be reactivated.
  • the at least one odor-neutralizing substance can be a liquid, in particular liquid at a process temperature, absorbent material (e.g.
  • Carrier material is stored.
  • that can be any material.
  • Carrier material have an average particle size of 3-8 mm, in particular 3-6 mm.
  • the at least one odor-neutralizing substance can have at least one or a combination of two or more
  • odor-neutralizing substances selected from the group consisting of carbon-containing absorbents, mineral absorbents, coffee, coffee grounds, activated carbon, cyclodextrins, zeolite, zinc compounds, coffee-based activated carbon (coffee-based activated carbon).
  • the odor-neutralizing substance is preferably used in pellet form. The dust development can thus be reduced.
  • the at least one odor-neutralizing substance can particularly preferably have an average particle size of 3-8 mm, in particular 3-6 mm.
  • the at least one odor-neutralizing substance can be fine-grained and / or
  • odor neutralizing substance can be mixed with a filler.
  • a particle size of the filling material can be larger or smaller than a particle size of the odor-neutralizing substance, so that a gas permeability of the odor-neutralizing substance is increased by the filling material, with a dust reduction or
  • the filler can be cellulose (in particular antidust-based cellulose) and / or a polymer and / or a mineral filler such as zeolite and / or vermiculite.
  • the filling material can be free of additives, in particular free of flame retardants and / or other chemicals.
  • Particle size of the filler can range from 3-8 mm, in particular from 3-6 mm.
  • the device can have a fragrance reservoir with at least one fragrance, a gas exchange connection being set up between the treatment room and the fragrance reservoir. It is therefore possible to carry out a fragrance treatment with fragrances desired by the consumer in addition to the odor reduction. In order to be able to better avoid that desired fragrances are also collected by the odor-neutralizing substance, it can be provided, for example, that the fragrance reservoir is located within a space between the treatment room and
  • Odor reduction reservoir is set up or can be arranged, for example circulating, gas stream in the flow direction after the odor reduction reservoir and / or is arranged in a chamber, for example the chamber mentioned above, which is separated from the treatment room.
  • the invention further relates to an exchange unit with
  • Inserting into a holder of an odor reduction reserve of a device for reducing the odor of tanned leather can be a
  • the device can be a device
  • the invention also relates to a kit for retrofitting a flexing device for flexing dry leather and / or a drying device for drying tanned leather, comprising at least one exchange unit as described herein is described and claimed, and a holder for holding and / or fixing the exchange unit.
  • a kit for retrofitting a flexing device for flexing dry leather and / or a drying device for drying tanned leather comprising at least one exchange unit as described herein is described and claimed, and a holder for holding and / or fixing the exchange unit.
  • advantageous configurations can be configured, for example, by the features of the device.
  • the invention further relates to a method for reducing the odor of tanned leather, comprising the steps:
  • the method also has the advantage that it can be particularly easily integrated into previously known processes for leather production, for example during a drying step and / or during a walking step, without the other
  • an active gas exchange between the treatment room and the odor reduction reservoir can be generated.
  • a active gas exchange between the treatment room and the odor reduction reservoir can be generated.
  • Odor reduction reservoir can be set up. This makes it possible to improve the gas exchange between the odor-neutralizing substance and the leather and thus to accelerate the odor reduction.
  • dry leather can be used or it can be provided that the leather is dried during the odor neutralization.
  • the leather can be moved inside the treatment room.
  • the leather can be tumbled. It can therefore be provided that all process steps of the
  • the odor reduction reservoir can be introduced into the treatment room.
  • the odor reduction reservoir can, for example, be arranged loosely in the treatment room and / or can be firmly connected to or with a wall of the treatment room.
  • the odor reduction reservoir or a further odor reduction reservoir is arranged outside the treatment room.
  • a particularly sustainable embodiment can provide that the at least one odor-neutralizing substance is dry and / or recyclable and / or reactivatable and / or is a liquid absorbent material which is embedded in a dry, porous carrier material.
  • odor neutralizing substance at least one or a combination of two or more odor neutralizing Substances selected from the group consisting of carbon-containing absorbents, mineral absorbents, coffee, coffee grounds, activated carbon, cyclodextrins, zeolite, zinc compounds, coffee-based activated carbon (coffee-based activated carbon).
  • the leather can be given at least one in a fragrance reservoir to give a certain scent to odor reduction
  • arranged perfume can be treated by a
  • the device as described and claimed herein can be used for
  • Treatment of the leather can be made.
  • Chromium VI compounds are particularly preferably not formed.
  • the formation of radicals would have the disadvantage that it could lead to autoxidation
  • the method for reducing odor is part of an Manufacturing process of tanned leather is used, in particular in such a way that an odor reduction is carried out while the leather is being trimmed, preferably in a pleated container.
  • the method can be carried out while the leather is being milled (also referred to as Millen).
  • the invention further relates to a method for retrofitting a milling device for milling dry leather and / or a drying device for drying tanned leather with an odor-reducing reservoir which has at least one odor-neutralizing substance.
  • the invention also relates to the use of coffee and / or at least one of the substances obtained therefrom, such as
  • tanned leather For example, the use can be in a device as described and claimed herein and / or in an exchange unit as described herein
  • Fig. 1 is a side view of a simplified
  • Fig. 2 shows a longitudinal view of the device from FIG. 1,
  • Fig. 3 shows a plan view of the device from FIGS. 1 and 2,
  • Fig. 4 shows a perspective view of a further embodiment of a device according to the invention for reducing the odor of tanned leather, shown in a simplified schematic manner, gas circulation being indicated by the broad arrows,
  • Fig. 5 shows a further perspective view of the device from FIG. 4, the particles occurring in the treatment room during the milling of leather being indicated,
  • Fig. 6 shows a further perspective view of the device from FIG. 4, with a humidification system
  • Treatment room is sprayable
  • Fig. 7 is a schematic representation of another
  • FIGS. 1 to 7 show several configurations of a device for reducing the odor of tanned leather
  • the device 1 has a treatment room 2 which is set up for treating leather.
  • the treatment room 2 can, for example, as shown in FIGS. 1-7, be configured as a flex container 7. However, other configurations are also possible in which the treatment room 2 is set up, for example, for drying tanned leather.
  • the device 1 has at least one odor reduction reservoir 3, which is outside of the aforementioned
  • the odor reduction reservoir 3 has at least one odor-neutralizing substance 4 that is within the odor reduction
  • reservoirs 3 is arranged.
  • the odor-neutralizing substance 3 can be arranged within the treatment room 2.
  • the decisive factor here is that a gas exchange connection 5 is set up between the treatment room 2 and the odor-reducing reservoir 3, that is to say between the odor-neutralizing substance 4 and the leather.
  • the gas exchange connection 5 between the treatment room 2 and the odor reduction reservoir 3 can be established, for example, by at least one gas exchange line 6.
  • the treatment room 2 which is designed as a milling drum, is rotatable about an axis of rotation.
  • the rotation of the treatment room 2 enables the leather to be treated.
  • the Leather can thus be 2 in together with the treatment room
  • Rotation are offset so that it is tumbled in the treatment room 2. While walking, the
  • the treatment room 2 has a closable opening through which the tanned leather can be introduced into the treatment room 2.
  • the opening can be closed, for example, by means of a door or hatch.
  • the odor reduction reservoir 3 is arranged or formed in a chamber 8 spatially separated from the treatment room 2.
  • the device 1 has a plurality of gas exchange lines 6.
  • a gas exchange line 6 leads from the treatment room 2 to the chamber 8 and a gas exchange line 6 from the chamber 8 back into the treatment room 2.
  • a closed system 9 from the treatment room 2, the gas exchange lines 6 and the chamber 8 is thus set up.
  • a gas flow and / or a gas circulation 16 can therefore be set up within the closed system 9.
  • a multiple treatment of the gas stream 16 with the odor-neutralizing substance 4 is thus possible, since the gas stream 16 passes through the
  • Odor reduction reservoir 3 is passed.
  • the treatment of the leather within the treatment room 2 can result in particle separation from the leather.
  • the device 1 can have a particle filter 10.
  • the above-mentioned gas stream 16 can be filtered by the particle filter 10, so that after the treatment of the leather has ended, a large part of the particles is removed from the air inside the treatment room 2 by the particle filter 10.
  • the device 1 can have a gas exchange device 11.
  • the gas exchange device 11 can be, for example, as a
  • Treatment room 2 possible.
  • the odor-neutralizing substance 4 can in one
  • the Exchange unit 12 may be arranged.
  • the exchange unit 12 has the advantage that an exchange of its maximum
  • the odor reduction reservoir 3 can have a holder 13 into which the exchange unit 12 can be inserted. Between the bracket 13 and the
  • Exchange unit can be set up a non-positive and / or positive connection.
  • the exchange unit 12 can be designed, for example, as a cartridge and / or as a pad and / or as an odor filter.
  • the odor-neutralizing substance 4 is preferably designed to be dry, so that it can be, for example, in powder form. It can be particularly expedient if the odor-neutralizing substance 4 is recyclable, that is to say reusable. It can be particularly advantageous if the odor-neutralizing substance 4 can be reactivated, for example by heat treatment. If the odor-neutralizing substance reaches its maximum use time, it is particularly advantageous if the odor-neutralizing substance 4 is compostable in order to avoid waste.
  • odor-neutralizing substance 4 may be mixed with a filling material.
  • a particle size of the filling material can be larger or smaller than a particle size of the odor-neutralizing substance, so that a
  • Gas permeability of the odor-neutralizing substance is increased by the filling material.
  • Filling material can be larger than the particle sizes of the odor-neutralizing material.
  • the filler material can be, for example, cellulose and / or a polymer and / or a mineral filler material such as zeolite.
  • the filler can be cellulose (in particular antidust-based cellulose) and / or a polymer and / or a mineral filler such as zeolite and / or vermiculite.
  • Filling material can be free of additives, in particular free of flame retardants and / or other chemicals.
  • the average particle size of the filling material can be from 3-8 mm, in particular from 3-6 mm.
  • the odor-neutralizing substance 4 can, for example, at least one or a combination of two or more substances 4 selected from the group
  • Zinc compounds coffee-based activated carbon.
  • the device 1 can also have a fragrance reservoir 14 have at least one fragrance 15 arranged therein.
  • the reservoir 14 can, for example, be arranged or formed in a chamber 8, in particular in the previously mentioned chamber 8 or in a further chamber 8. Through the fragrance 15, it is possible through the
  • Odor neutralization to treat treated leather with a desired fragrance Odor neutralization to treat treated leather with a desired fragrance.
  • the fragrance reservoir 15 can be within a between the
  • Treatment room 2 and the odor reduction reservoir 13 set up gas flow 16 in the flow direction
  • Odor reduction reservoir 13 may be arranged downstream.
  • the device 1 can have at least one humidification system 17.
  • the humidification system 17 can, for example, be at least one
  • Nebulization device 18 may be formed. Through the
  • Nebulization device 18 and / or the humidification system 17 it is possible to place a liquid, in particular water or an aqueous solution, in the gas stream 16 and / or the
  • Treatment room 2 for example by atomization or
  • Treatment room 2 can be a sensor for determining the
  • Moisture especially air humidity
  • a control unit can be provided which is set up to control the moisture via the humidification system 17 as a function of the measured
  • Moisture is preferably regulated automatically by activating and deactivating the humidification system 17.
  • the device 1 shown in FIG. 7 has two nebulizing devices 18, which are the same as or
  • a first nebulizer 18 is the
  • Treatment room 2 assigned to liquid in particular as a mist and / or in spray form in the treatment room 2
  • the additional substance can be, for example, an additional odor-neutralizing substance 4 and / or another substance used to treat the leather.
  • the additional substance can be, for example, an additional odor-neutralizing substance 4 and / or another substance used to treat the leather.
  • Additional S ubstanz involve odor cyclodextrins, for example, are present in aqueous solution.
  • the cyclodextrins can have an additional odor-reducing effect.
  • the odor reduction reservoir 3 can be replaced by the nebulization device 18 if the latter is set up to release an odor-neutralizing substance 4.
  • the at least one nebulizing device 18 can have an outlet, for example a spray nozzle, which leads into the treatment room 2 and / or into the gas exchange line 6
  • Can release liquid The liquid can also be transported with the gas flow into the treatment room 2 if no direct release is provided in the treatment room 2.
  • Fragrance reservoir 14 may be arranged. This has the advantage that through the filter 10, solids, such as cyclodextrins, which are introduced into the gas stream 16 by the nebulization device 18, are filtered out via the filter 10 before the gas stream 16 reaches the treatment room 2. This can prevent solids from coming into contact with the leather.
  • Sample A 10 skins (equivalent to crust leather) tanned by a chrome retanning formulation # 1 (without odor reduction treatment as described and claimed herein).
  • Sample B 10 skins (equivalent to crust leather) tanned by a chrome retanning formulation # 1 (with odor reduction treatment as described and claimed herein).
  • Milling drum made by Erretre
  • Activated carbon was used as an odor-neutralizing substance
  • the activated carbon was used in the form of an activated carbon filter.
  • Filter size 20 cm x 25 cm x 3 cm, preferably the filter material can also have a volume of two to three liters.
  • sample A The skins of sample A were placed in a drum and Tumbled in the drum at 35 ° C and 35% HR for 4 hours
  • the skins of sample B corresponded to sample A in the milling drum for the same period of time, at the same time
  • Conditions tumbled In addition, a guest exchange between the tanned hides and a filter (1500 cc) containing 700 grams of activated carbon was set up in the drum for the entire duration of the treatment.
  • the VDA 270 test only determines the odor intensity on a scale from grade 1 to grade 6, whereby:
  • Sample C 10 skins (equivalent to crust leather) tanned through a chrome-free retanning formulation # 2 (without odor reduction treatment as described and claimed herein).
  • Sample D 10 skins (equivalent to crust leather) tanned by a chrome-free retanning formulation # 2 (with odor reduction treatment as described and claimed herein).
  • the test sequence corresponds to the test sequence of the first pilot test.
  • a set of the odor samples taken was evaluated by customers and another set internally at TFL for its smell.
  • Sample E 10 splits (split leather, corresponds to crust leather) tanned by a chromium retanning formulation # 3 (without treatment to reduce odor, as here
  • Sample F 10 splits (split leather, equivalent to crust leather) tanned by a chrome retanning formulation # 3 (with odor reduction treatment as described and claimed herein).
  • the remaining materials correspond to those that were already used in the first pilot test.
  • the test sequence corresponds to the test sequence of the first pilot test.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne un dispositif (1) de réduction des odeurs de cuir tanné, comportant une chambre de traitement (2) conçue pour le séchage de cuir tanné et/ou le traitement de cuir sec, et au moins un réservoir de réduction des odeurs (3) contenant au moins une substance neutralisant les odeurs (4), une liaison d'échange gazeux (5) étant ménagée entre la chambre de traitement (2) et le réservoir de réduction des odeurs (3).
EP19818023.4A 2018-12-10 2019-12-09 Dispositif, module interchangeable et procédé pour la réduction de l'odeur de cuir tanné Active EP3861143B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018131624.0A DE102018131624A1 (de) 2018-12-10 2018-12-10 Vorrichtung, Wechseleinheit, Kit und Verfahren zur Geruchsreduzierung von gegerbtem Leder
PCT/EP2019/084186 WO2020120383A1 (fr) 2018-12-10 2019-12-09 Dispositif, unité de changement, kit et procédé de réduction des odeurs de cuir tanné

Publications (2)

Publication Number Publication Date
EP3861143A1 true EP3861143A1 (fr) 2021-08-11
EP3861143B1 EP3861143B1 (fr) 2022-10-26

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EP19818023.4A Active EP3861143B1 (fr) 2018-12-10 2019-12-09 Dispositif, module interchangeable et procédé pour la réduction de l'odeur de cuir tanné

Country Status (10)

Country Link
US (1) US20220127687A1 (fr)
EP (1) EP3861143B1 (fr)
CN (1) CN113166820A (fr)
BR (1) BR112021010528A2 (fr)
DE (1) DE102018131624A1 (fr)
ES (1) ES2934865T3 (fr)
MX (1) MX2021006805A (fr)
PT (1) PT3861143T (fr)
WO (1) WO2020120383A1 (fr)
ZA (1) ZA202103502B (fr)

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IT202000019624A1 (it) * 2020-08-07 2022-02-07 Erretre Spa Impianto industriale di bottalatura di pelli a migliorato impatto ambientale

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Publication number Publication date
PT3861143T (pt) 2023-01-16
BR112021010528A2 (pt) 2021-08-24
DE102018131624A1 (de) 2020-06-10
US20220127687A1 (en) 2022-04-28
ZA202103502B (en) 2022-02-23
CN113166820A (zh) 2021-07-23
MX2021006805A (es) 2021-07-02
ES2934865T3 (es) 2023-02-27
EP3861143B1 (fr) 2022-10-26
WO2020120383A1 (fr) 2020-06-18

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