EP0990707B1 - Process for the controlled dosing of products in a drum - Google Patents

Process for the controlled dosing of products in a drum Download PDF

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Publication number
EP0990707B1
EP0990707B1 EP99118917A EP99118917A EP0990707B1 EP 0990707 B1 EP0990707 B1 EP 0990707B1 EP 99118917 A EP99118917 A EP 99118917A EP 99118917 A EP99118917 A EP 99118917A EP 0990707 B1 EP0990707 B1 EP 0990707B1
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EP
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Prior art keywords
drum
air
procedure according
chemicals
water
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EP99118917A
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German (de)
French (fr)
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EP0990707A3 (en
EP0990707A2 (en
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Ruggero Galiotto
Beniamino Remonato
Giancarlo Remonato
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Erretre SpA
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Erretre SpA
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    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B3/00Milling leather

Definitions

  • the invention relates to a method for controlling the dosage of products in a barrel. It relates more particularly to a method for controlling the dosing cycle chemicals, air and water, in a cask for milling, tanning and dyeing.
  • the facility that feeds each barrel consists essentially of three circuits: the circuit of the air, which is circulated in the barrel, the circuit of the products additional chemicals, which contribute to improving the scaling of skins and the water circuit, which provides the right amount of moisture within the barrel itself.
  • Each barrel is therefore equipped with pumps, spray nozzles, pressure vessels and other apparatus inserted in the circuits for carrying out the dosage of the products: by way of example, mention is made of the barrel described in the application for EP 0 960 948 of the same applicant.
  • the dosage of the products is done manually and according to a methodology that essentially depends on the experience and skill of the operator, which sometimes brings unsatisfactory work results and quality insufficient treated skin, which must be removed with obvious economic damage and production.
  • the object of the present invention is to provide a method of the type described above, which operates completely automatically and which includes fixed work phases, combined with programmable work phases depending on the type of skin to be treated.
  • barrel 1 rotates around its axis and the air is circulated in its interior volume by the fan 2, after it has been heated to the correct temperature by the heating coil 3, by the adjustment of both thermostats 4.1 and 4.2.
  • the relative humidity sensor 5 finds that the air inside the barrel is too dry, it controls the opening of the three-way motorized valves, 6, 7 and 8 in a first position 1-3, so as to allow the entry of pressurized water which is sprayed by at least one of the nozzles 9A or 9B.
  • the dosing phase of the chemicals is selected on the command 10, and this involves the interruption of the air circulation, for example, at the following the shutdown of the fan and / or the exclusion of the heating battery 3, as well as closing the water supply by rotating the three-way valve 7 in a second position 2-3, and the three-way valve 8 in the passage position 3-1-2, for allow the chemicals 11 contained in the tank 12 to be sprayed at the inside of the barrel by the action of the pump 13 activated by the probe 14 which reveals the presence of the product in the tank.
  • an electrical control monitors the condition of the barrel so that, during the rotation phase of the latter, the chemical dosing operation be initiated while on the contrary, when the barrel is stopped, or under the effect of inversion the direction of rotation of this barrel, said dosage is immediately blocked, to resume then on the return of the state of rotation of the barrel in the initial direction.
  • the two three-way valves 6 and 7 respectively assume the position 2-3 and the position 1-3 during the stop phase of the dosing, thereby putting the nozzles 9 into fast discharge. They thereby determine a forced decrease in the pressure at the inside of the product circuit, which avoids the possible flow of drops of the product by the nozzles and, consequently, the possibility of staining the skins irreparably.
  • the installation automatically returns, immediately or temporally under normal operating conditions, with the return of air circulation and with the three-way valves 6, 7 and 8 positioned to allow the entry of water when the moisture maintaining apparatus or relative humidity sensor 5 indicates a too low value of the humidity of the air circulating in the barrel.
  • the process according to the invention involves a dosing system to regulate the value of moisture by a step-by-step process and with discharge of the residual pressure, a diagnostic system with remote alarm during operation and a system self-diagnosis that precedes the start of the entire installation.
  • the water dosing system used to adjust the moisture value of the air contained in the barrel provides for the use, in the circuit of the air, of a valve with four lanes 15 and two timers 16 and 17 on the control panel 10.
  • the four-way valve 15 moves from the position 1-2, 3-4, normal passage, to the position 1-3, 2-4 so that it takes place a recycling-renewal, that is to say that the air from the barrel is expelled and replaced in the circuit by fresh air taken from the outside environment and optionally also previously cooled by a specially provided refrigeration unit.
  • the water is sprayed through the nozzle 9A cyclically, that is to say by alternating active phases and phases of rest, until the desired moisture level has been reached, and the duration of these phase is properly adjusted by means of the two timers 16 and 17.
  • the three-way valve lanes 6 is in the 2-3 position, so that the nozzle is in a dump situation, while, during the following period, of a duration established by the timer of 17, said valve always moves to position 1-3, so that the circuit is traversed by pressurized water fog sprayed by said nozzle.
  • This mode of work has the advantage of being able to program between a dosage and the following, a certain period of time during which the humidity sensor 5 succeeds in measure the true value of the relative humidity inside the barrel, a value that is not never constant since the absorption of water by air occurs very slowly and absolutely unpredictable, depending on multiple factors, the first of which is type of skin to work.
  • the diagnostic system with remote alarm allows to control the operation of the machine by continuously monitoring the condition of the thermal protections electrical consumers, the presence of electrical power, hydraulic, pneumatic and all other vital functions, all without stopping the machine, and in the case of anomalies, to activate a remote alarm such as an audible, optical or a telephone dialer that alerts the operator, even when the operator is not directly present at the installation but is for example at home.
  • a remote alarm such as an audible, optical or a telephone dialer that alerts the operator, even when the operator is not directly present at the installation but is for example at home.
  • This system is advantageous, considering the great economic value of skins to work which, in the event of anomalies or stopping of the barrel, would be irremediably damaged and, if we also consider that in tanneries, the time of work is continuous, so also at night and fully automated, with a reduction or lack of staff.
  • the self-diagnosis system that operates before the machine is turned on function to invalidate this start as long as the working parameters and the safety position have not been checked, via an electronic circuit, in identifying immediately the possible causes of malfunction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Medicinal Preparation (AREA)
  • Coating Apparatus (AREA)

Description

L'invention concerne un procédé de contrôle du dosage de produits dans un tonneau. Elle vise plus particulièrement un procédé pour le contrôle du cycle de dosage des produits chimiques, de l'air et de l'eau, dans un tonneau de foulonnage, tannage et teinture.The invention relates to a method for controlling the dosage of products in a barrel. It relates more particularly to a method for controlling the dosing cycle chemicals, air and water, in a cask for milling, tanning and dyeing.

Dans le domaine du tannage, on connaít bien les tonneaux de foulonnage, teinture et tannage, c'est-à-dire des machines aptes à assouplir, à teindre et tanner les peaux.In the field of tanning, we know well the barrels of fulling, dyeing and tanning, that is to say machines able to soften, dye and tan the skins.

L'installation qui alimente chaque tonneau est constituée essentiellement par trois circuits : le circuit de l'air, qu'on fait circuler dans le tonneau, le circuit des produits chimiques additionnels, qui concourent à améliorer l'opération de foulonnage des peaux et le circuit de l'eau, qui pourvoit à maintenir le juste degré d'humidité à l'intérieur du tonneau lui même.The facility that feeds each barrel consists essentially of three circuits: the circuit of the air, which is circulated in the barrel, the circuit of the products additional chemicals, which contribute to improving the scaling of skins and the water circuit, which provides the right amount of moisture within the barrel itself.

Chaque tonneau est donc pour cela muni de pompes, de buses de pulvérisation, de réservoirs sous pression et d'autres appareils intercalés dans lesdits circuits pour effectuer le dosage des produits : à titre d'exemple, on cite le tonneau décrit dans la demande de brevet EP 0 960 948 de la même demanderesse.Each barrel is therefore equipped with pumps, spray nozzles, pressure vessels and other apparatus inserted in the circuits for carrying out the dosage of the products: by way of example, mention is made of the barrel described in the application for EP 0 960 948 of the same applicant.

Dans l'état actuel de la technique, le dosage des produits s'effectue manuellement et selon une méthodologie qui dépend essentiellement de l'expérience et de l'habilité de l'opérateur, ce qui apporte quelquefois des résultats de travail insatisfaisants et une qualité insuffisante des peaux traitées, lesquelles doivent être éliminées avec d'évidents dommages économiques et de production.In the current state of the art, the dosage of the products is done manually and according to a methodology that essentially depends on the experience and skill of the operator, which sometimes brings unsatisfactory work results and quality insufficient treated skin, which must be removed with obvious economic damage and production.

Le but de la présente invention est de prévoir un procédé du type décrit ci-dessus, qui opère totalement de façon automatique et qui comprenne des phases de travail fixes, combinées à des phases de travail programmables en fonction du type de peaux à traiter. The object of the present invention is to provide a method of the type described above, which operates completely automatically and which includes fixed work phases, combined with programmable work phases depending on the type of skin to be treated.

Ceci est réalisé conformément aux caractéristiques de la partie caractérisante de la revendication 1.This is done according to the characteristics of the characterizing part of the claim 1.

Des formes de réalisation avantageuses font l'objet des sous-revendications.Advantageous embodiments are the subject of the subclaims.

Le procédé sera maintenant décrit ci-après dans ses diverses phases, à titre d'exemple illustratif et non limitatif, à l'aide des planches de dessins annexés où :

  • la Fig. 1 (planche I) représente le schéma de fonctionnement pendant la phase de dosage des produits chimiques ;
  • la Fig. 2 (planche II) représente le schéma de fonctionnement pendant la phase de dosage de l'eau pour le réglage du degré d'humidité relative ;
  • la Fig. 3 (planche III) représente un schéma de déroulement de l'opération de dosage des produits chimiques.
  • The process will now be described hereinafter in its various phases, by way of illustrative and non-limiting example, with the help of the attached drawing plates where:
  • FIG. 1 (Plate I) shows the flow diagram during the dosing phase of the chemicals;
  • FIG. 2 (Plate II) shows the flow diagram during the dosing phase of the water for adjusting the relative humidity level;
  • FIG. 3 (Plate III) shows a flow diagram of the dosing operation of the chemicals.
  • Pendant l'action normale de foulonnage, tannage et teinture, le tonneau 1 tourne autour de son axe et l'air est mis en circulation dans son volume intérieur par le ventilateur 2, après qu'il a été chauffé à la bonne température par la batterie de chauffage 3, par le réglage des deux thermostats 4.1 et 4.2.During the normal action of fulling, tanning and dyeing, barrel 1 rotates around its axis and the air is circulated in its interior volume by the fan 2, after it has been heated to the correct temperature by the heating coil 3, by the adjustment of both thermostats 4.1 and 4.2.

    Lorsque le capteur d'humidité relative 5 constate que l'air à l'intérieur du tonneau est trop sec, il commande l'ouverture des vannes motorisées à trois voies, 6, 7 et 8 dans une première position 1-3, de manière à permettre l'entrée de l'eau sous pression qui est pulvérisée en brouillard par au moins une des buses 9A ou 9B.When the relative humidity sensor 5 finds that the air inside the barrel is too dry, it controls the opening of the three-way motorized valves, 6, 7 and 8 in a first position 1-3, so as to allow the entry of pressurized water which is sprayed by at least one of the nozzles 9A or 9B.

    La phase de dosage des produits chimiques est sélectionnée sur le tableau de commande 10, et ceci comporte l'interruption de la circulation de l'air, par exemple, à la suite de l'arrêt du ventilateur et/ou de l'exclusion de la batterie de chauffage 3, ainsi que la fermeture de l'alimentation de l'eau par la rotation de la vanne à trois voies 7 dans une seconde position 2-3, et de la vanne à trois voies 8 dans la position de passage 3-1-2, pour permettre que les produits chimiques 11, contenus dans le réservoir 12, soient pulvérisés à l'intérieur du tonneau par l'action de la pompe 13 activée par la sonde 14 qui révèle la présence du produit dans le réservoir.The dosing phase of the chemicals is selected on the command 10, and this involves the interruption of the air circulation, for example, at the following the shutdown of the fan and / or the exclusion of the heating battery 3, as well as closing the water supply by rotating the three-way valve 7 in a second position 2-3, and the three-way valve 8 in the passage position 3-1-2, for allow the chemicals 11 contained in the tank 12 to be sprayed at the inside of the barrel by the action of the pump 13 activated by the probe 14 which reveals the presence of the product in the tank.

    En même temps, un contrôle électrique surveille l'état du tonneau de manière que, pendant la phase de rotation de ce dernier, l'opération de dosage des produits chimiques soit initiée tandis qu'au contraire, lorsque le tonneau est arrêté, ou sous l'effet de l'inversion du sens de rotation de ce tonneau, ledit dosage est immédiatement bloqué, pour reprendre ensuite au retour de l'état de rotation du tonneau dans le sens initial.At the same time, an electrical control monitors the condition of the barrel so that, during the rotation phase of the latter, the chemical dosing operation be initiated while on the contrary, when the barrel is stopped, or under the effect of inversion the direction of rotation of this barrel, said dosage is immediately blocked, to resume then on the return of the state of rotation of the barrel in the initial direction.

    En service, les deux vannes à trois voies 6 et 7 prennent respectivement la position 2-3 et la position 1-3 pendant la phase d'arrêt du dosage, en mettant ainsi les buses 9 en décharge rapide. Elles déterminent par ce moyen une diminution forcée de la pression à l'intérieur du circuit de produit, ce qui évite l'éventuelle coulée de gouttes du produit par les buses et, par conséquent, la possibilité de tacher les peaux de façon irréparable.In operation, the two three-way valves 6 and 7 respectively assume the position 2-3 and the position 1-3 during the stop phase of the dosing, thereby putting the nozzles 9 into fast discharge. They thereby determine a forced decrease in the pressure at the inside of the product circuit, which avoids the possible flow of drops of the product by the nozzles and, consequently, the possibility of staining the skins irreparably.

    Ensuite, lorsque la sonde 14 ne constate plus la présence de liquide dans le réservoir 12, l'installation revient automatiquement, de façon immédiate ou temporisée aux conditions normales de fonctionnement, avec la reprise de la circulation de l'air et avec les vannes à trois voies 6, 7 et 8 positionnées de manière à permettre l'entrée de l'eau lorsque l'appareil de maintien de l'humidité ou capteur d'humidité relative 5 indique une valeur trop basse de l'humidité de l'air qui circule dans le tonneau.Then, when the probe 14 no longer finds the presence of liquid in the tank 12, the installation automatically returns, immediately or temporally under normal operating conditions, with the return of air circulation and with the three-way valves 6, 7 and 8 positioned to allow the entry of water when the moisture maintaining apparatus or relative humidity sensor 5 indicates a too low value of the humidity of the air circulating in the barrel.

    Le procédé selon l'invention fait intervenir un système de dosage pour régler la valeur de l'humidité par un procédé pas-à-pas et avec décharge de la pression résiduelle, un système de diagnostic avec alarme à distance pendant le fonctionnement et un système d'autodiagnostic qui précède la mise en marche de l'ensemble de l'installation. The process according to the invention involves a dosing system to regulate the value of moisture by a step-by-step process and with discharge of the residual pressure, a diagnostic system with remote alarm during operation and a system self-diagnosis that precedes the start of the entire installation.

    En détail, le système de dosage de l'eau servant à régler la valeur de l'humidité de l'air contenue dans le tonneau prévoit l'emploi, dans le circuit de l'air, d'une vanne à quatre voies 15 et de deux temporisateurs 16 et 17, sur le tableau de commande 10.In detail, the water dosing system used to adjust the moisture value of the air contained in the barrel provides for the use, in the circuit of the air, of a valve with four lanes 15 and two timers 16 and 17 on the control panel 10.

    En fonctionnement, lorsque le capteur d'humidité relative 5 constate un degré d'humidité de l'air supérieur à celui établi, la vanne à quatre voies 15 se déplace de la position 1-2, 3-4, de passage normal, à la position 1-3, 2-4 de manière qu'il s'effectue un recyclage-renouvellement, c'est-à-dire que l'air provenant du tonneau soit expulsé et remplacé dans le circuit par de l'air neuf prélevé sur l'environnement extérieur et éventuellement aussi préalablement refroidi par un groupe frigorifique spécialement prévu.In operation, when the relative humidity sensor 5 observes a degree air humidity greater than that established, the four-way valve 15 moves from the position 1-2, 3-4, normal passage, to the position 1-3, 2-4 so that it takes place a recycling-renewal, that is to say that the air from the barrel is expelled and replaced in the circuit by fresh air taken from the outside environment and optionally also previously cooled by a specially provided refrigeration unit.

    Lorsqu'au contraire, il est nécessaire d'activer l'humidification, l'eau est pulvérisée à travers la buse 9A de façon cyclique, c'est-à-dire en alternant des phases actives et des phases de repos, jusqu'à ce qu'on ait atteint le degré d'humidité voulu, et la durée de ces phases est convenablement réglée au moyen des deux minuteurs 16 et 17.When, on the contrary, it is necessary to activate the humidification, the water is sprayed through the nozzle 9A cyclically, that is to say by alternating active phases and phases of rest, until the desired moisture level has been reached, and the duration of these phase is properly adjusted by means of the two timers 16 and 17.

    En pratique, pendant le temps fixé avec le minuteur d'arrêt 16, la vanne à trois voies 6 est dans la position 2-3, de sorte que la buse est dans une situation de décharge, tandis que, pendant la période suivante, d'une durée établie par le minuteur de pulvérisation 17, ladite vanne se place toujours dans la position 1-3, de sorte que le circuit est parcouru par l'eau sous pression pulvérisée en brouillard par ladite buse.In practice, during the time set with the stop timer 16, the three-way valve lanes 6 is in the 2-3 position, so that the nozzle is in a dump situation, while, during the following period, of a duration established by the timer of 17, said valve always moves to position 1-3, so that the circuit is traversed by pressurized water fog sprayed by said nozzle.

    Ce mode de travail a l'avantage de pouvoir programmer entre un dosage et le suivant, un certain intervalle de temps pendant lequel le capteur d'humidité 5 réussit à mesurer la valeur réelle de l'humidité relative à l'intérieur du tonneau, valeur qui n'est jamais constante puisque l'absorption de l'eau par l'air se produit très lentement et d'une façon absolument imprévisible, en fonction de multiples facteurs dont le premier est le type de peau à travailler. This mode of work has the advantage of being able to program between a dosage and the following, a certain period of time during which the humidity sensor 5 succeeds in measure the true value of the relative humidity inside the barrel, a value that is not never constant since the absorption of water by air occurs very slowly and absolutely unpredictable, depending on multiple factors, the first of which is type of skin to work.

    Le système de diagnostic avec alarme à distance permet de contrôler le fonctionnement de la machine en surveillant en continu l'état des protections thermiques des consommateurs électriques, la présence de l'alimentation électrique, hydraulique, pneumatique et toutes les autres fonctions vitales, le tout sans arrêter la machine, et, dans le cas d'anomalies, d'actionner une alarme à distance telle qu'un signal sonore, optique ou un combinateur téléphonique qui alerte l'opérateur responsable, même lorsque celui-ci n'est pas directement présent auprès de l'installation mais se trouve par exemple chez lui.The diagnostic system with remote alarm allows to control the operation of the machine by continuously monitoring the condition of the thermal protections electrical consumers, the presence of electrical power, hydraulic, pneumatic and all other vital functions, all without stopping the machine, and in the case of anomalies, to activate a remote alarm such as an audible, optical or a telephone dialer that alerts the operator, even when the operator is not directly present at the installation but is for example at home.

    Ce système est avantageux, si l'on considère la grande valeur économique des peaux à travailler qui, dans les cas d'anomalies ou d'arrêt du tonneau, seraient irrémédiablement abímées et, si l'on considère aussi que, dans les tanneries, le temps de travail est continu, donc également nocturne et totalement automatisé, avec une réduction ou absence de personnel.This system is advantageous, considering the great economic value of skins to work which, in the event of anomalies or stopping of the barrel, would be irremediably damaged and, if we also consider that in tanneries, the time of work is continuous, so also at night and fully automated, with a reduction or lack of staff.

    Le système d'autodiagnostic qui opère avant la mise en marche de la machine a pour fonction d'invalider cette mise en marche tant que les paramètres de travail et la position de sécurité n'ont pas été contrôlés, par l'intermédiaire d'un circuit électronique, en identifiant immédiatement les éventuelles causes de défaut de fonctionnement.The self-diagnosis system that operates before the machine is turned on function to invalidate this start as long as the working parameters and the safety position have not been checked, via an electronic circuit, in identifying immediately the possible causes of malfunction.

    Claims (10)

    1. Procedure for controlling the dosage cycle of chemicals, air and water in a fulling, tanning and dyeing drum, whereby, in a normal operating phase, the drum (1) turns around its axis and air is circulated inside this drum by means of a blower (2) after being heated by the heating unit (3) controlled by a thermostat (4.1, 4.2) connected to a relative humidity detector (5) capable of signalling, should the humidity of the air inside the drum be less than a set rate, the opening of 3-way motorised valves (6, 7, 8) to a first position (1-3) for the entry of water under pressure into the drum, this water being sprayed in a mist by at least one nozzle (9A, 9B).
         said procedure being characterised by the fact that, for the phase in which chemicals are dosed into the drum, air circulation inside the drum is interrupted, preferably by turning off the blower (2) and/or the heating unit (3), the water supply is shut off and the 3-way valves (6, 7, 8) are switched to a second position for spraying chemicals (11) inside the drum by the action of a pump (13) activated by a probe (14) capable of detecting the presence of chemicals contained in a tank (12), while, during this chemical dosing phase, an electrical test of the drum status is performed in such a manner that the chemical dosing action takes place only when the drum is rotating in a first direction, while conversely, the said dosing action is immediately stopped when rotation ceases or rotation commences in a second inverse direction, opposite to the first, to be restarted when the drum begins to rotate again in the said first direction.
    2. Procedure according to claim 1, characterised by the fact that, during the phase when the dosage of chemicals is stopped, two 3-way valves (6, 7) are set to a position (2-3, 1-3) for rapid discharge from the spray nozzles (9).
    3. Procedure according to claim 2, characterised by the fact that, when the probe (14) no longer detects the presence of chemicals (11) in the tank (12), the normal operating phase is automatically resumed immediately, with restoration of air circulation, the three 3-way valves (6, 7, 8) being set to their first position for the entry of water under pressure.
    4. Procedure according to claim 2, characterised by the fact that, when the probe (14) no longer detects the presence of chemicals (11) in the tank (12), the normal operating phase is automatically resumed, in a delayed manner, with restoration of air circulation, the three 3-way valves (6, 7, 8) being set to their first position for the entry of water under pressure.
    5. Procedure according to one or more of the foregoing claims, characterised by the use, in the air circuit, of a 4-way valve (15) that has a first normal port position (1-2, 3-4), said 4-way valve being capable, when the relative humidity sensor (5) detects a degree of air humidity higher than the set value, of adopting a second recycling-renewal position (1-3, 2-4) in which the air from the drum is expelled and replaced in the circuit by fresh air taken from the outside environment after being cooled where applicable by a cooling unit.
    6. Procedure according to one or more of the foregoing claims, characterised by the fact that, when it is necessary to activate humidification, water is sprayed through at least one nozzle (9A) in a cyclical manner, alternating active and inactive spraying phases, until the desired degree of humidity is obtained.
    7. Procedure according to claim 6, characterised in that the duration of the active and inactive water spraying phases is regulated by means of two automisers (16,17) placed in a control panel (10).
    8. Procedure according to claim 7, characterised by the fact that during a first period, one (6) of the 3-way valves is in the second position (2-3) for rapid nozzle discharge, while, during the next period, said valve (6) is in the first position (1-3) for the entry of water under pressure.
    9. Procedure according to one or more of the foregoing claims, characterised by the provision of a diagnostics system with a remote alarm that controls the operation of the machine by continuously monitoring the status of the thermal protections of electric power consumers, the presence of electric, hydraulic and pneumatic power, and all other vital functions, all without stopping the machine, and in the event of anomalies, activating a remote alarm, such as an audible or visual signal, or a dial-up controller that alerts the operator in charge, even when he is not directly present near the installation.
    10. Procedure according to one or more of the foregoing claims, characterised by the provision of a self-diagnostics system that operates before the machine starts to run and that has the function of invalidating this start-up as long as the operating parameters and the position of the safety devices, immediately identifying the possible causes of a malfunction, have not been controlled by means of an electronic circuit.
    EP99118917A 1998-09-28 1999-09-25 Process for the controlled dosing of products in a drum Expired - Lifetime EP0990707B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    IT98VI000184A ITVI980184A1 (en) 1998-09-28 1998-09-28 PROCEDURE FOR CONTROL OF THE DOSING CYCLE OF CHEMICAL PRODUCTS, AIR AND WATER IN THE FILLING, RETANING AND
    ITVI980184 1998-09-28

    Publications (3)

    Publication Number Publication Date
    EP0990707A2 EP0990707A2 (en) 2000-04-05
    EP0990707A3 EP0990707A3 (en) 2002-04-17
    EP0990707B1 true EP0990707B1 (en) 2004-02-11

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    Application Number Title Priority Date Filing Date
    EP99118917A Expired - Lifetime EP0990707B1 (en) 1998-09-28 1999-09-25 Process for the controlled dosing of products in a drum

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    EP (1) EP0990707B1 (en)
    AR (1) AR021831A1 (en)
    AT (1) ATE259427T1 (en)
    BR (1) BR9907467B1 (en)
    DE (1) DE69914691T2 (en)
    ES (1) ES2216399T3 (en)
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    Families Citing this family (8)

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    Publication number Priority date Publication date Assignee Title
    IT1309868B1 (en) * 1999-10-29 2002-02-05 Italprogetti Engineering S R L BOTTLE FOR DRY PROCESSING OF LEATHER
    ITVI20050041A1 (en) * 2005-02-15 2006-08-16 Erretre Spa BOTTLE OF FOLLONING, DYEING AND RECONCIA
    ITVI20080053A1 (en) * 2008-02-29 2009-09-01 Erretre Spa METHOD OF TREATMENT OF FLEXIBLE LAMINAR SURFACES.
    SI2481821T1 (en) * 2011-01-28 2013-08-30 BOXMARK LEATHER proizvodnja in trgovina d.o.o. Process for treating leather
    CN106197753A (en) * 2016-08-19 2016-12-07 无锡市新达轻工机械有限公司 Rotary drum system for detecting temperature
    IT201700026639A1 (en) * 2017-03-10 2018-09-10 Erretre Spa METHOD FOR RECOGNITION OF THE BOTTALING STATE OF SKINS
    IT201800002869A1 (en) * 2018-02-20 2019-08-20 Vallero Int S P A Tanning unit for the evaluation of the life cycle including a drum
    CN113862403A (en) * 2021-11-10 2021-12-31 无锡市新达轻工机械有限公司 Cold air type temperature and humidity control leather softening machine system

    Family Cites Families (4)

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    Publication number Priority date Publication date Assignee Title
    DE3030017C2 (en) * 1980-08-08 1982-09-16 Ludwig Dose Milling device for leather
    IT1148083B (en) * 1981-04-08 1986-11-26 Fulvio Remonato SPRAY BOOTH FOR PIGMENTS OR PAINTS ON TANNED OR OTHER SKIN, WITH BUILT-IN AIR PURIFIER
    DD219506A1 (en) * 1983-10-10 1985-03-06 Lederwaren Veb K METHOD AND DEVICE FOR TANGING SKIN AND SKIN
    ITVI980107A1 (en) * 1998-05-27 1999-11-29 Erretre Srl FOLLONING, DYEING AND RECONNECTION BOTTLE

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    ATE259427T1 (en) 2004-02-15
    EP0990707A3 (en) 2002-04-17
    AR021831A1 (en) 2002-08-07
    ES2216399T3 (en) 2004-10-16
    DE69914691T2 (en) 2004-10-07
    DE69914691D1 (en) 2004-03-18
    ITVI980184A1 (en) 2000-03-28
    BR9907467B1 (en) 2011-05-31
    BR9907467A (en) 2000-09-26
    EP0990707A2 (en) 2000-04-05

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