EP2190768B1 - Procédé de contrôle de la présence d'un avivage - Google Patents

Procédé de contrôle de la présence d'un avivage Download PDF

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Publication number
EP2190768B1
EP2190768B1 EP07802272A EP07802272A EP2190768B1 EP 2190768 B1 EP2190768 B1 EP 2190768B1 EP 07802272 A EP07802272 A EP 07802272A EP 07802272 A EP07802272 A EP 07802272A EP 2190768 B1 EP2190768 B1 EP 2190768B1
Authority
EP
European Patent Office
Prior art keywords
finish
application
amount
time
metering system
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.)
Not-in-force
Application number
EP07802272A
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German (de)
English (en)
Other versions
EP2190768A1 (fr
Inventor
Franz Böni
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.)
SSM AG
SSM Schaerer Schweiter Mettler AG
Original Assignee
SSM AG
SSM Schaerer Schweiter Mettler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SSM AG, SSM Schaerer Schweiter Mettler AG filed Critical SSM AG
Publication of EP2190768A1 publication Critical patent/EP2190768A1/fr
Application granted granted Critical
Publication of EP2190768B1 publication Critical patent/EP2190768B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H71/00—Moistening, sizing, oiling, waxing, colouring or drying filamentary material as additional measures during package formation
    • B65H71/007—Oiling, waxing by applying liquid during spooling
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/24—Means for regulating the amount of treating material picked up by the textile material during its treatment
    • D06B23/28—Means for regulating the amount of treating material picked up by the textile material during its treatment in response to a test conducted on the treating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/20—Volume; Volume flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/40—Temperature; Thermal conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Auxiliaries are textile auxiliaries, for example emulsions of plants and mineral oils, which improve the properties and / or the behavior of threads, for example during their further processing. Treating threads with Avivage is called avivage.
  • a generic device (Avivier worn) for applying a Avivag réellesmenge on a thread is eg from the EP 1 405 938 A1 known.
  • a control unit of the metering system is connected to a donor for the yarn speed of the ongoing to be tuned thread and the emery application amount is calculated in dependence on the measured by the encoder yarn speed.
  • the sensor signal difference of the temperature sensors is proportional to the conveying speed of the softening application amount through the liquid line. The higher the conveying speed, the faster the heating in the heating area is promoted in the direction of the second temperature sensor.
  • the heater is positioned closer to the first temperature sensor than to the second temperature sensor. At standstill, so in the absence of a Avivagechenes, due to the static state between the temperature sensors, the lubrication at the first temperature sensor is heated more than the second temperature sensor. If the lubricant is pumped, ie if a softening flow is present, heat is transported from the heater to the second temperature sensor by the heating fluid. The result for the second temperature sensor is a higher temperature than the first temperature sensor. The greater the fluidizing flux, the less the effect described is disturbed by disturbances, in particular by diffusion processes (temperature drift), and the more reliably can the presence of the lubricant be determined by evaluating the evaluation of the time profile of the difference between the measured application temperatures.
  • the invention has for its object to provide a method for monitoring the presence of a lubricant, which avoids the disadvantages of the prior art, in particular wherein the presence of the lubricant can be reliably monitored at low flow rates.
  • the time course of the delivery change in the amount of fuel it can be preferred for the time course of the delivery change in the amount of fuel that the time course has a steep rise and fall, ie the duration of the rise and fall only a few percent, eg less than 10% of the time duration of the total Delivery rate change is.
  • the boost triggers a greater temperature difference (sensor reaction) compared with the application of the avivage application. This stronger sensor reaction is evaluated.
  • the time interval of the delivery rate change amounts to a duration of less than 10 seconds, preferably up to 3 seconds, a sensor signal difference sufficient for the purpose of monitoring the presence of a refreshment is generated in known avivating devices.
  • the delivery rate of the change in delivery amount of 1 to 100 microliters, which does not lead to any disturbing change in the order of Avivage on the thread or the yarn.
  • a short return of a lubricant return quantity in the liquid line against the direction of the application device is carried out by means of the metering system.
  • the recovery can e.g. be carried out immediately after the increase in delivery amount.
  • the amount of lubricant recirculation corresponds to the amount of oil production increase, preferably wherein the duration of the recirculation corresponds to the duration of the amount of oil production increase, for example, when the application starts.
  • the recirculation of the reclaimer can be kept constant over the time average.
  • the advance amount increase is carried out at the time of starting the application of the softening application amount onto the running textile yarn or the running textile yarn, ie at the start of a spindle on which the yarn or yarn is wound, and the return feed is at the time of finishing the application the softening application amount, that is at or after the stop of the spindle on which the thread or the yarn is wound, made.
  • the latter variant of the method is particularly suitable for use when, after the return feed, a bobbin change of the yarn or thread to be finished is carried out.
  • the amount of lubricant application to the yarn or yarn remains constant, independently of the performance of the lubricant delivery quantity change according to the invention, in particular for identical lubricant volumes of the boosts. Only a small amount of lubricant is conveyed back and forth in the liquid line. Upon or after the spindle is stopped, the additional amount of lubricant supplied by the boost at startup is compensated for, so that the thread or yarn always has the correct application, i.e., the correct amount. to the desired avivival order quantity.
  • the finish must be introduced into the system, i. in the liquid line through which the lubricant is conveyed, are introduced. Therefore, the desired delivery rate is not disturbed by the first boost during startup.
  • control unit is set up to control the metering system in such a way that, after a brief increase in the amount of lubricant delivery, a short return of a lubricant recirculation quantity in the liquid line against the direction of the applicator device, in particular after the stop of a Umspulvonreaes in which the lubricant is applied, is carried out by means of the metering system, the applied to the thread or the yarn Avivaggessmenge can be kept constant over time, especially if the Avivage tubmengenerhöhung is equal to the Avivageück lymphmenge.
  • the dosing system preferably has a pump which can be driven by a lifting magnet, whereby a precise control of the delivery amount of lubricant is made possible in a simple manner since such a lifting magnet enables a pulsating pumping of the lubricant through the liquid line.
  • the metering system can have any drives in particular any electric motors as a drive.
  • the heater is preferably positioned asymmetrically between the first and the second temperature sensor on the liquid line.
  • the latter leads to the sensor signal difference being significantly more pronounced. Since the temperature difference between the first and the second temperature sensor is determined for the evaluation of the presence of the lubricant, the heat energy introduced into the lubricant, ie the heat output between the temperature sensors, can be kept low. At standstill, due to the static condition between the temperature sensors, the lubricant is more strongly heated at the first temperature sensor than at the second temperature sensor. If the avivage is pumped, heat is transferred from the heater to the temperature sensor by the heating fluid. The result for the second temperature sensor is a higher temperature than the first temperature sensor.
  • the device according to the invention is particularly suitable for use in the application of lubricant in a yarn processing machine, in particular a winding machine.
  • a heater for liquefying the finish after the Device preferably provided immediately before the application of the finishing on the thread or the yarn, positioned to improve the flow properties of the finish.
  • FIG. 1 shows a schematic representation of an inventive Avivier Published
  • FIG. 2 shows the time course of the difference of measured Avivagetemperaturen and the associated Avivage absorbmengenverlauf in an inventive Avivier sleep.
  • FIG. 1 is a schematic representation of an inventive Avivier raised shown.
  • a yarn 2 to be finished is unwound from a supply spool 3 in a winding station and wound onto a take-up spool 4.
  • an application device 6 which is positioned in the region of the yarn path of the yarn 2, and which is designed as an application nozzle, a softening application quantity is applied to the running yarn 2.
  • the lubricant to be applied ie the amount of softening application, is conveyed from a storage container (not shown) through a liquid line 8 in the direction of the application nozzle.
  • the lubricant is conveyed by means of a metering system 11 controlled by a control unit 10, for example a pump which can be driven by a stepper motor.
  • a control unit 10 for example a pump which can be driven by a stepper motor.
  • the conveyance of the softening application quantity is symbolized by the arrowheaded line within the liquid line 8.
  • a lubrication measuring system with a first temperature sensor 13 for measuring a time course of a first temperature Avivagetemperatur at a first measuring point on the liquid line 8 and a second temperature sensor 14 for measuring a time course of a second Avivagetemperatur at a second measuring point on the liquid line 8 is positioned ,
  • a heater 16 By means of a heater 16, the avivage to be conveyed between the first and the second measuring point on the liquid line 8 is heated.
  • the heater 16 is positioned asymmetrically to the measuring points, ie the distance between the heater 16 and the first measuring point is, for example, smaller than the distance between the heater 16 and the second measuring point.
  • the measured coating temperatures are transferred, for example, as sensor signals of the temperature sensors 13, 14 to an evaluation unit.
  • the evaluation unit may, for example, as a microcomputer, or. Microchip, at the analog inputs, the sensor signals of the temperature sensors abut be formed. It is also possible to use a separate unit, for example a differential amplifier 20, as part of the evaluation unit for determining the difference of the measured heating temperatures, the difference then being the output of the separate unit, ie the difference of the sensor signals, input of an analog input of a microcomputer 21 Evaluation can come.
  • the microcomputer 21 is also used as a control unit 10 of the dosing system 11.
  • the control unit 10 controls the dosing system 11 in such a way that during the measurement of the finishing temperatures in a time interval, a short-term oiling amount change 25, which is carried out as a delivery amount increase, is generated by means of the dosing system 11.
  • the latter can e.g. be achieved by a brief increase in the speed of the motor of the pump.
  • the short-term increase in conveying quantity 25 is shown in the figure as a rectangular elevation on the line conveying arrowheads symbolizing the conveying of the receiving order quantity.
  • the FIG. 2 shows the time course of the difference of measured Avivagetemperaturen as the difference of the sensor signals (sensor signal difference) 30 of the temperature sensors at an associated Avivage assistantmengenverlauf 35.
  • the Avivage assistantmengenverlauf 35 can, for example, the engine speed of the pump of the dosing system driving motor can be used.
  • the illustrated advance delivery flow rate curve 35 has a delivery amount increase (positive boost) 37 at the time of starting the application of the amount of softening application to the running textile yarn or the running textile yarn, ie at low values of the time axis t.
  • This advance delivery amount increase 37 is shown as the range of the advance delivery rate progression 35, which exceeds the eg constant range of the service charge order quantity.
  • a short-term return (negative boost) 39 of a lubricant return amount in the liquid line is opposite to the application device direction by means of the metering system performed.
  • This return promotion is shown as the range of the advance delivery flow rate 35 which goes below the, for example, constant range of the call-up order quantity.
  • the illustrated sensor signal difference 30 results in the presence of lubrication in the liquid line. Since the second temperature sensor is arranged in a region after the heating, it can therefore be concluded that such a sensor signal difference 30 occurs in the presence of a coating on the application device direction.
  • flanks 40,41 For the necessary evaluation of the sensor signal difference 30, the areas of the flanks 40,41 the resulting from the Avivageeaumengenverlauf 35 sensor signal difference 30 used. These flanks 40, 41 occur in each case with a time delay represented in the figure by a double arrow in each case relative to the lubricant delivery quantity changes produced by the negative and positive boost.
  • the time delay comes from the avivage flow, but also contains system-related time delays, eg the time constant of the temperature transfer to the temperature sensors.
  • the time delay through the avivage flow corresponds to the time required for the flow of the lubrication along the distance of the distance from the heater to the downstream in the flow direction temperature sensor.
  • the positive boost generated by briefly increasing the speed of the pump drive of the dosing for example, the amount of, for example, about 40 microliters in eg about 2 seconds can be promoted as Avivage felicitmengenerhöhung 39.
  • This positive boost has, for example, a lubrication volume of a few microliters and generates a raised edge of the sensor signal difference in the flow sensor formed by the calibration measuring system. If the sensor signal difference 30 falls after the boost by a specified threshold, so Avivage is present. Thereafter, the pump of the dosing system conveys with a preset amount of time for a conditioning agent per time. The sensor signal difference 30 increases slowly. This slow increase results from the lower sensor signal difference 30 caused by the boost.
  • the metering system is controlled by the control unit immediately after the stop of the pump of the metering system in such a way that the pump generates the negative boost 39 by means of a short return of the lubricant.
  • the return conveying is carried out in such a way that the negative boost 39 is preferred, at least with regard to its pumped coating volume also in terms of its time course to the previous positive boost 37 is identical, ie corresponds in terms of amount.
  • the negative boost with a softening volume of a few microliters causes a faster and higher increase in the sensor signal difference 30. If the sensor signal difference 30 increases after the negative boost 39 by a specified threshold value, then lubrication is present.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (10)

  1. Procédé de surveillance de la présence d'un agent d'avivage, en particulier d'une huile, sur un applicateur (6), en particulier une buse applicatrice, lors de l'application au moyen de l'applicateur (6) d'une quantité d'agent d'avivage à appliquer sur un fil textile en déplacement ou un filé textile (2) en déplacement, en particulier avec une quantité d'agent d'avivage à appliquer inférieure à 0,5 gramme par minute, de préférence inférieure à 0,3 ou 0, 2 gramme par minute, comprenant les étapes suivantes
    - distribution de la quantité d'agent d'avivage à appliquer, en particulier à partir d'un réservoir, par une conduite de liquide (8) en direction de l'applicateur, au moyen d'un système de dosage (11) pour la distribution contrôlée de l'agent d'avivage à appliquer,
    - mesure de l'allure en fonction du temps d'une première température d'agent d'avivage en un premier point de mesure sur la conduite de liquide, au moyen d'un premier capteur de température (13),
    - mesure de l'allure en fonction du temps d'une deuxième température d'agent d'avivage en un deuxième point de mesure sur la conduite de liquide, au moyen d'un deuxième capteur de température (14),
    - chauffage de l'agent d'avivage à distribuer, entre le premier et le deuxième points de mesure, au moyen d'un équipement de chauffage (16), et
    - détermination de l'allure en fonction du temps de la différence des températures d'agent d'avivage mesurées, et surveillance de la présence de l'agent d'avivage par évaluation de l'allure en fonction du temps de la différence des températures d'agent d'avivage mesurées,
    caractérisé en ce qu'une brève variation (25) de la quantité d'agent d'avivage distribuée, différant de la quantité d'agent d'avivage à appliquer, est produite pendant un intervalle de temps au moyen du système de dosage (11) pendant la mesure des températures d'agent d'avivage.
  2. Procédé selon la revendication 1, caractérisé en ce que l'intervalle de temps de la variation (25) de la quantité d'agent d'avivage distribuée possède une durée inférieure à 10 secondes, de préférence jusqu'à 3 secondes, et/ou la quantité distribuée de la variation (25) de la quantité d'agent d'avivage distribuée est égale à 1 à 100 microlitres.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, après une brève augmentation (37) de la quantité d'agent d'avivage distribuée, dépassant la quantité d'agent d'avivage à appliquer, on entreprend au moyen du système de dosage (11) un bref refoulement d'une quantité d'agent d'avivage refoulée (39) dans la conduite de liquide (8), en direction opposée à l'applicateur.
  4. Procédé selon la revendication 3, caractérisé en ce que la quantité d'agent d'avivage refoulée (39) correspond à l'augmentation (37) de la quantité d'agent d'avivage distribuée, sachant de préférence que la durée du refoulement correspond à la durée de l'augmentation (37) de la quantité d'agent d'avivage distribuée, de préférence lors du démarrage de l'application.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que l'augmentation (37) de la quantité d'agent d'avivage distribuée est entreprise au moment du démarrage de l'application de la quantité d'agent d'avivage à appliquer sur le fil textile en déplacement ou le filé textile (2) en déplacement, et le refoulement est entrepris au moment de l'achèvement de l'application de la quantité d'agent d'avivage à appliquer.
  6. Dispositif pour appliquer une quantité d'agent d'avivage à appliquer sur un fil textile en déplacement ou un filé textile (2) en déplacement, au moyen d'un applicateur (6), en particulier d'une buse applicatrice, comprenant
    - un système de dosage (11) avec une unité de commande (10) pour la distribution contrôlée de la quantité d'agent d'avivage à appliquer, en particulier à partir d'un réservoir, par une conduite de liquide (8) en direction de l'applicateur,
    - un système de mesure d'agent d'avivage, avec un premier capteur de température (13) pour mesurer l'allure en fonction du temps d'une première température d'agent d'avivage en un premier point de mesure sur la conduite de liquide (8), et avec un deuxième capteur de température (14) pour mesurer l'allure en fonction du temps d'une deuxième température d'agent d'avivage en un deuxième point de mesure sur la conduite de liquide (8), sachant qu'un équipement de chauffage (16) est prévu pour chauffer l'agent d'avivage à distribuer entre le premier et le deuxième points de mesure sur la conduite de liquide (8), et
    - une unité d'évaluation pour déterminer l'allure en fonction du temps de la différence des températures d'agent d'avivage mesurées, et pour surveiller la présence de l'agent d'avivage par évaluation de l'allure en fonction du temps de la différence (30) des températures d'agent d'avivage mesurées,
    caractérisé en ce que l'unité de commande (10) est conçue pour commander le système de dosage (11) de telle sorte qu'une brève variation (25) de la quantité d'agent d'avivage distribuée, différant de la quantité d'agent d'avivage à appliquer, est produite pendant un intervalle de temps au moyen du système de dosage (11) pendant la mesure des températures d'agent d'avivage.
  7. Dispositif selon la revendication 6, caractérisé en ce que l'unité de commande (10) est conçue pour commander le système de dosage (11) de telle sorte qu'après une brève augmentation (37) de la quantité d'agent d'avivage distribuée, dépassant la quantité d'agent d'avivage à appliquer, on entreprend au moyen du système de dosage (11) un bref refoulement d'une quantité d'agent d'avivage refoulée (39) dans la conduite de liquide (8), en direction opposée à l'applicateur.
  8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que le système de dosage (11) présente une pompe pouvant être entraînée par un aimant de translation.
  9. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que l'équipement de chauffage (16) est positionné de manière asymétrique entre le premier et le deuxième capteurs de température sur la conduite de liquide (8).
  10. Utilisation du dispositif selon l'une des revendications 6 à 9 pour l'application d'un agent d'avivage dans une machine de traitement de filés, en particulier dans un bobinoir.
EP07802272A 2007-09-12 2007-09-12 Procédé de contrôle de la présence d'un avivage Not-in-force EP2190768B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/007930 WO2009036773A1 (fr) 2007-09-12 2007-09-12 Procédé de contrôle de la présence d'un avivage

Publications (2)

Publication Number Publication Date
EP2190768A1 EP2190768A1 (fr) 2010-06-02
EP2190768B1 true EP2190768B1 (fr) 2011-12-21

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Application Number Title Priority Date Filing Date
EP07802272A Not-in-force EP2190768B1 (fr) 2007-09-12 2007-09-12 Procédé de contrôle de la présence d'un avivage

Country Status (6)

Country Link
EP (1) EP2190768B1 (fr)
CN (1) CN101801830B (fr)
AT (1) ATE538061T1 (fr)
EG (1) EG26049A (fr)
MA (1) MA31697B1 (fr)
WO (1) WO2009036773A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057525B4 (de) 2009-12-01 2015-07-09 Zschimmer & Schwarz Gmbh & Co. Kg Chemische Fabriken Vorrichtung und Verfahren zum Auftragen von Flüssigkeiten auf einen Faden
CH719452A1 (de) * 2022-02-25 2023-08-31 Ssm Schaerer Schweiter Mettler Ag Vorrichtung zur Oelung eines laufenden Garns.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261356A1 (de) * 1972-12-15 1974-06-20 Sahm Georg Fa Vorrichtung zur benetzung von faeden an spulmaschinen mit fluessigem medium
DE4333716C1 (de) * 1993-10-03 1995-02-02 Graf & Co Gmbh Verfahren und Vorrichtungen zur Aufbringung von Präparationen auf Garne bzw. Fäden am laufenden Faden
DE19843132A1 (de) * 1997-09-27 1999-04-08 Barmag Barmer Maschf Verfahren zum Auftragen einer Flüssigkeit auf einen laufenden Faden
DE19817418A1 (de) * 1998-04-18 1999-10-21 Schoeller Textil Gmbh & Co Kg Verfahren und Vorrichtung zur Avivierung von Fasern sowie entsprechend ausgestattete Spinnlinie bzw. Einzelmaschine
EP1405938B1 (fr) * 2002-10-05 2006-07-12 Schärer Schweiter Mettler AG Dispositif pour appliquer un avivage sur un fil en mouvement

Also Published As

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WO2009036773A1 (fr) 2009-03-26
EP2190768A1 (fr) 2010-06-02
CN101801830B (zh) 2012-08-01
CN101801830A (zh) 2010-08-11
EG26049A (en) 2013-01-13
MA31697B1 (fr) 2010-09-01
ATE538061T1 (de) 2012-01-15

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