EP0325529A1 - Verfahren und Vorrichtung zur Regulierung von Färbung - Google Patents

Verfahren und Vorrichtung zur Regulierung von Färbung Download PDF

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Publication number
EP0325529A1
EP0325529A1 EP89400137A EP89400137A EP0325529A1 EP 0325529 A1 EP0325529 A1 EP 0325529A1 EP 89400137 A EP89400137 A EP 89400137A EP 89400137 A EP89400137 A EP 89400137A EP 0325529 A1 EP0325529 A1 EP 0325529A1
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EP
European Patent Office
Prior art keywords
bath
exhaustion
dye
speed
dyeing
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.)
Ceased
Application number
EP89400137A
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English (en)
French (fr)
Inventor
Jean-Pierre Rouvillain
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.)
Institut Francais Textile et Habillement
Original Assignee
Institut Francais Textile et Habillement
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 Institut Francais Textile et Habillement filed Critical Institut Francais Textile et Habillement
Publication of EP0325529A1 publication Critical patent/EP0325529A1/de
Ceased 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
    • 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

Definitions

  • the present invention relates to the regulation of a discontinuous operation for dyeing a material, in particular a textile material, during which the dye (s) present in the dye bath migrate onto the material and are fixed therein so sustainable. It concerns the regulation according to which the transfer of the dyes, that is to say the exhaustion of the bath in dyes, is monitored by photocolorimetry at determined time intervals and action is taken to ensure that the exhaustion in question follows a curve fixed in advance.
  • a regulation of this type is known and practiced, in which one acts on the temperature of the bath.
  • the aim is to obtain a regular transfer of the dye (s) contained in the bath, essential for a homogeneous dye of good quality.
  • a rate of depletion of the bath is determined in advance throughout the duration of the dyeing operation, or possibly different speeds of depletion of the bath during certain portions of the dyeing operation.
  • the temperature of the bath is varied, as a function of the values obtained, periodically, as to the actual depletion of the dye bath, so that the actual depletion curve is as close as possible to the pre-established curve.
  • This known method of regulation is implemented in a device sold under the brand TEINTOPROG.
  • This device has three elements, namely the measurement chamber in which the bath circulates continuously, the optical unit consisting of a white light source associated with a set of four filters, photodiodes and converters and a processing system which analyzes the signals from the optical unit, processes them and controls the regulation by acting on the heating automation.
  • the known method is only operational for a limited number of types of dyeing, using soluble dyes, that is to say cationic or anionic dyes for wool, polyamide or acrylic. Its use is in particular not possible in the case of reactive dyes.
  • the method is of the known type according to which the exhaustion of the dye bath is followed by photocolorimetry at determined time intervals. In an original manner, one makes vary in two successive stages, first a first then a second parameter different from the first, so that the depletion of the dyes bath as a function of time substantially follows a predetermined curve.
  • a dyeing bath for cellulosic materials containing at least one reactive dye is regulated, by increasing in a first step the content of electrolytes in the bath and by increasing in a second step the content of agents in the bath. alkaline.
  • the electrolyte added to the bath during the first stage consists for example of sodium hydroxide
  • the alkaline agent added to the bath during the second stage consists for example of sodium hydroxide solution and the transition from the first stage to the second occurs, for example, when an additional supply of electrolyte no longer varies exhaustion.
  • a dyeing bath for materials such as wool, polyamide, containing at least one soluble dye is regulated. of a dyeing operation completed from the same batch and having a temperature of around 70 ° C and a pH close to neutral.
  • the pH is varied in a first step up to the known pH suitable for the material and the class of dyes used, for example 5, by progressive addition of an acid agent, then it is varied in a second. step the bath temperature to around 100 ° C.
  • the first and / or second means of action may consist of containers fitted with a supply valve, the opening and closing of which are controlled by the comparison means, said containers containing given auxiliary dyeing agents.
  • the container corresponding to the first means of action contains an electrolyte and the container corresponding to the second means of action contains an alkaline solution.
  • the container corresponding to the first means of action contains an acid solution.
  • the first or second means of action may consist in the means for heating the dye bath provided with a switch actuated by the comparison means.
  • the material to be dyed is placed in the dye autoclave 1, on which a pipe 2 is mounted in diversion.
  • the pipe 2 passes into the measurement chamber 4, which is connected by a double set 5 and 6 of optical fibers to an optical unit 7.
  • the optical unit 7 comprises two parts 8 and 9 In the first part 8, a source 10 of white light and its associated optics 11 illuminate the input 12 of the first set 5 of optical fibers.
  • the output 13 of the second set 6 of optical fibers is directed to four filters, associated with photodiodes and converters, transforming the light flux transmitted through the filters into electrical signals.
  • the pipe 2 comprises the outlet 14 of the first set 5 of optical fibers and the inlet 15 of the second set 6 of optical fibers.
  • the outlet 14 and the inlet 15 are positioned opposite one another in the pipe 2.
  • the converters are connected to an assembly 16 for processing electrical signals, the operation of which will be explained later, which controls the use of the solenoid valve 17 fitted to the container 18 on the one hand and the automatic control system on the other hand. heating 19 of the dye bath 3.
  • the container 18, containing at least one dyeing agent, opens into the autoclave 1.
  • the spent bath after a first wool dyeing operation, is substantially free of dyes; it is at the end of the cycle temperature, of the order of 90 ° C to 100 ° C.
  • the quantity of spent bath is less than that necessary for a new pass, taking into account the quantity of bath which was removed by the material taken out of the autoclave in the previous operation.
  • the temperature of the spent bath is around 75 ° C. Its pH is brought to 7.4, optionally adding the necessary reagents.
  • the photocolorimetric sensor performs a first measurement of the spent bath and then a second after adding the dyes.
  • the flock of yarn to be dyed is placed in the autoclave and the dyeing operation can begin.
  • the dye bath 3 passes through the material to be dyed and circulates in line 2.
  • the light source 10 associated with its optics 11 sends a flux to the input 12 of the first set 5 of optical fibers light which is directed into the measurement chamber 4.
  • this flux coming from the exit 14 of the first set 5 of optical fibers crosses the dye bath 3.
  • the incident light flux undergoes an absorption which is a function of the concentration by coloring bath 3, for a given wavelength of light.
  • the flow, after passing through the bath 3, is taken up by the second set 6 of optical fibers and is separated into four distinct channels where it passes through each of the four filters.
  • the purpose of passing over the filters is to reveal the specific luminous flux of each dye contained in the bath as a function of its wavelength.
  • the photodiodes, the converters and the processing unit 16 convert the light intensities into standardized currents (from 4 to 20 mA).
  • the processing assembly 16 acts on the solenoid valve 17 controlling the introduction into the autoclave 1 of the acetic acid solution contained in the container 18. This introduction is controlled so that the speed d he actual exhaustion is close to the set speed (s) used for this first step.
  • the processing assembly 16 will command the opening of the solenoid valve 17 at each measurement where a negative difference will be noted between the measured value and the setpoint value (measured exhaustion speed lower than the exhaustion value adopted as the setpoint Conversely, in the event of a positive deviation exceeding a given maximum, the processing assembly 16 will not control the opening of the solenoid valve 17.
  • This first step in the case of dyeing wool fluff using soluble dyes, lasts until the dye bath 3 has reached the predetermined pH threshold, depending on the material and the class of dyes, for example 5.
  • This predetermined pH is that recommended by the suppliers of dyes and known to all dyers.
  • the processing assembly 16 acts on the automatic device 19 for heating the dye bath 3, increasing or stopping the heating so that the actual speed of depletion is close to the speed (s) (s) setpoint retained for this second step.
  • This second step lasts until the temperature reaches 100 ° C or when the dye bath 3 is exhausted to 90% for example.
  • the processing assembly 16 is connected not to the heating automation 19 but to a second solenoid valve / container assembly similar to the solenoid valve 17 and to the container 18
  • the first container 17 contains an electrolyte, for example sodium hydroxide and the second container an alkaline solution, for example sodium hydroxide solution.
  • the operation of the device is identical to that described in the first example.
  • the dye bath remains at constant temperature, for example around 40 ° C if the reactive dyes used are "cold” reactants, 80 ° C if the reactive dyes used are "hot” reactants.
  • the electrolyte is added so that the measured exhaustion speed is close to the set speed selected for this first step, which lasts until an additional supply of electrolyte no longer makes vary exhaustion.
  • This transition from the first to the second step is controlled when, for example during four or five successive measurements, the colorimetric sensor no longer notices any change in the exhaustion of the dye bath.
  • the alkaline solution is added so that the measured exhaustion speed is close to the set speed selected for this second step, which lasts until all of the alkaline agent is used, or ideally that an additional intake no longer varies exhaustion.
  • a cotton containing 0.5% of a reactive dye CI (Color Index) Reactive yellow 27 was used for a cotton which has previously undergone the necessary preparation treatments. This percentage is calculated on the mass of material to be dye.
  • the bath maintained at 40 ° C., circulates through the material for 5 to 10 minutes for good homogenization, then the sodium sulfate is added so that the exhaustion in dye follows a slope of 1.5% / min.
  • the quantity of sodium sulphate retained is 40 g / l.
  • the end of the first stage occurs when the amount of sodium sulfate, corresponding to 40 g / l, has been added to the bath.
  • the alkaline agent is a sodium hydroxide solution at 36 ° Bé, at a rate of 2 ml / l.
  • the exhaustion curve for this second step is the same, namely 1.5% / min.
  • the end of the second stage occurs when the quantity of lye provided has been added or when no depletion is observed after 5 successive additions of lye.
  • the complete fixing of the dye and the usual finishing treatments require an additional time of approximately 30 minutes.
  • the invention is not limited to the examples which have just been described. It is up to the person skilled in the art, within the framework of the process of the invention, to choose the two parameters which will best allow the speed of exhaustion of the dye bath to be varied as regularly as possible, and this as a function of the dyestuffs and dyeing conditions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coloring (AREA)
EP89400137A 1988-01-21 1989-01-18 Verfahren und Vorrichtung zur Regulierung von Färbung Ceased EP0325529A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801010 1988-01-21
FR8801010A FR2626297B1 (fr) 1988-01-21 1988-01-21 Procede et dispositif de regulation de teinture

Publications (1)

Publication Number Publication Date
EP0325529A1 true EP0325529A1 (de) 1989-07-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400137A Ceased EP0325529A1 (de) 1988-01-21 1989-01-18 Verfahren und Vorrichtung zur Regulierung von Färbung

Country Status (3)

Country Link
EP (1) EP0325529A1 (de)
DK (1) DK26489A (de)
FR (1) FR2626297B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004039253A3 (fr) * 2002-10-28 2004-06-03 Comeureg S A Procédé de contrôle de l’épuisement des bains de teinture et de rinçage pour machine de teinture
WO2008078345A1 (en) * 2006-12-27 2008-07-03 Tecnorama S.R.L. Apparatus and method for carrying out optical readings on textile materials submitted to dyeing
US7834995B2 (en) 2006-08-24 2010-11-16 Tecnorama S.R.L. Device and method for carrying out optical readings on textile materials submitted to dyeing
US8925356B2 (en) 2009-03-27 2015-01-06 Tecnorama S.R.L. Apparatus and process for performing optical readings on packaged textile material subjected to dyeing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1185819A (fr) * 1956-11-07 1959-08-06 Drayton Regulator & Instr Comp Procédé de teinture et appareil pour l'application dudit procédé
FR2018134A7 (de) * 1968-09-14 1970-05-29 Basf Ag
FR2399066A1 (fr) * 1975-03-21 1979-02-23 Ciba Geigy Ag Procede et dispositif pour la conduite optimale des operations de teinture
EP0126042A2 (de) * 1983-03-18 1984-11-21 Adcon AB Verfahren und Vorrichtung zum Färben von Cellulosefasern enthaltenden Materialien
FR2552789A1 (fr) * 1983-10-01 1985-04-05 Sandoz Sa Procede de teinture par epuisement de fibres textiles
WO1986006426A1 (en) * 1985-04-29 1986-11-06 Adcon Ab A method for dyeing cellulose fiber material by means of reactive dyeing agents

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1185819A (fr) * 1956-11-07 1959-08-06 Drayton Regulator & Instr Comp Procédé de teinture et appareil pour l'application dudit procédé
FR2018134A7 (de) * 1968-09-14 1970-05-29 Basf Ag
FR2399066A1 (fr) * 1975-03-21 1979-02-23 Ciba Geigy Ag Procede et dispositif pour la conduite optimale des operations de teinture
EP0126042A2 (de) * 1983-03-18 1984-11-21 Adcon AB Verfahren und Vorrichtung zum Färben von Cellulosefasern enthaltenden Materialien
FR2552789A1 (fr) * 1983-10-01 1985-04-05 Sandoz Sa Procede de teinture par epuisement de fibres textiles
WO1986006426A1 (en) * 1985-04-29 1986-11-06 Adcon Ab A method for dyeing cellulose fiber material by means of reactive dyeing agents

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004039253A3 (fr) * 2002-10-28 2004-06-03 Comeureg S A Procédé de contrôle de l’épuisement des bains de teinture et de rinçage pour machine de teinture
US7834995B2 (en) 2006-08-24 2010-11-16 Tecnorama S.R.L. Device and method for carrying out optical readings on textile materials submitted to dyeing
WO2008078345A1 (en) * 2006-12-27 2008-07-03 Tecnorama S.R.L. Apparatus and method for carrying out optical readings on textile materials submitted to dyeing
US7914590B2 (en) 2006-12-27 2011-03-29 Tecnorama S.R.L. Apparatus and method for carrying out optical readings on textile materials submitted to dyeing
US8925356B2 (en) 2009-03-27 2015-01-06 Tecnorama S.R.L. Apparatus and process for performing optical readings on packaged textile material subjected to dyeing

Also Published As

Publication number Publication date
DK26489D0 (da) 1989-01-20
FR2626297B1 (fr) 1990-07-13
FR2626297A1 (fr) 1989-07-28
DK26489A (da) 1989-07-22

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