EP0087391A1 - Procédé et installation pour imprégner une matière en bande avec un produit chimique - Google Patents

Procédé et installation pour imprégner une matière en bande avec un produit chimique Download PDF

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Publication number
EP0087391A1
EP0087391A1 EP83810066A EP83810066A EP0087391A1 EP 0087391 A1 EP0087391 A1 EP 0087391A1 EP 83810066 A EP83810066 A EP 83810066A EP 83810066 A EP83810066 A EP 83810066A EP 0087391 A1 EP0087391 A1 EP 0087391A1
Authority
EP
European Patent Office
Prior art keywords
bath
chemical
concentration
material web
baths
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.)
Withdrawn
Application number
EP83810066A
Other languages
German (de)
English (en)
Inventor
Josef Oxé
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.)
Novartis AG
Original Assignee
Ciba Geigy 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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of EP0087391A1 publication Critical patent/EP0087391A1/fr
Withdrawn legal-status Critical Current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 invention relates to a method and a device for applying a chemical to a material web in accordance with the upper handles of the independent claims.
  • Impregnation or padding processes serve the purpose of applying chemical compounds or products to the textile material.
  • Chemical compounds or products include acids, bases, salts, oxidizing agents, reducing agents etc. as well as special compounds such as surfactants, complexing agents, dyes, finishing agents, etc. Roger that. Woven and knitted fabrics, sometimes also strand yarn, made of so-called natural and synthetic fibers or mixtures thereof are available as textile material.
  • the padding and impregnation skids are mainly known as the impregnation device.
  • Both dry and wet material are usually present for the impregnation, the uniform and defined application of quantity to dry material being less difficult than to wet material.
  • one of the textile to be impregnated finds between the impregnation liquor F and the initial moisture R Fleet exchange F a taking place depending on the material and the type and size of the impregnation device.
  • the impregnation liquor F contains the chemical concentration C O , this concentration being such that the desired chemical concentration C kg is on the goods after padding.
  • the chemicals and water can also be fed in separately, which is increasingly encountered today.
  • a constant bath concentration C ensures a constant chemical concentration C k g on the goods
  • a constant bath concentration C L does not indicate the effective amount of chemicals in g or ml per kg of goods to as the Chem i kal i enkonzen t ra ti on on the product C k g not only the liquor concentration CL but also of an unknown, fixture and material-dependent factor F R depends on the n individual factors R, F and F a includes.
  • an automatic device in which not a constant chemical concentration in the impregnation bath is maintained, but rather the exact amount of chemicals C kg which the padded material is supposed to have is metered in depending on the production output K t .
  • the chemical concentration C L (t) changes over time from an initial concentration C o until a stable equilibrium is reached.
  • this compensation process takes a relatively long time (a few hours), so that a relatively large amount of textile material (e.g. 5000 kg and more) has to be treated until the correct chemical application is achieved.
  • the present invention is intended to remedy these deficiencies and to improve an impregnation process and a suitable device of the type defined at the outset in such a way that a uniform, constant, quantity-predictable chemical application is achieved within a very short start-up time.
  • the impregnation device shown comprises a runner 1 with two chambers 1 a and 1 b, in which two impregnation baths F1 and F2 are located.
  • Two level probes 2a and 2b each control a level controller 3a or 3b, which keep the bath level in the chambers la and lb constant by appropriately supplying liquor from reservoirs 4a and 4b.
  • Each chamber is connected to a circulation circuit 5a or 5b, which contain a circulation pump 6a or 6b and a filter 7a or 7b.
  • Two drain valves 8a and 8b are also provided for draining liquor.
  • the chemicals which are to be applied to the material web M to be treated are metered in from a storage container 9 via two metering valves 10a and 10b, the metering valve 10a being connected to the circulation circuit 5a of the first runner chamber 1a and the metering valve 10b directly into the second Skid chamber lb opens out.
  • the material web M which, as mentioned at the beginning, can also be extruded material, reaches the first impregnation bath F1 via an inlet squeeze unit 11, is deflected there on a roller 12 and leaves the first bath via a center squeeze unit 13, from where it is is introduced into the second impregnation bath F2. In the second bath, the web is deflected several times on rollers 14-18 and finally exits the impregnation skid via an exit crushing device 19.
  • an automatic analysis device 21 For automatic control of the impregnation device, an automatic analysis device 21, possibly a second such device 22, a process computer 23 with input 24 and a display and registration device 25 are provided.
  • the analyzers 21 and 22 are connected to the circulation circuits 5a and 5b of the two runner chambers la and lb and determine the concentration of the chemical or chemicals to be applied in the impregnation baths F1 and F2.
  • the process computer 23 controls the metering valves 10a and 10b and the drain valves 8a and 9b on the one hand as a function of certain input parameters and on the production speed (connection with, for example, crushing unit 19) and on the other hand according to the chemical concentration determined by the analysis device (s).
  • the display and registration device 25 displays all relevant data and also records them as required.
  • the optional analyzer 22 is intended for the detection of substantive chemicals. It must react selectively to the chemical in question. For example, it can be a spectrophotometer or the like.
  • the moisture usually increases in the direction of movement of the material web.
  • the process computer 23 now feeds the first F1 via the metering valve 10a continuously or intermittently precisely that amount C kg ⁇ k t of chemicals which is to be applied to the material web M.
  • the second bath F2 remains unaffected except for maintaining the level.
  • the chemical concentration C L (t) in the first bath Fl will change over time and, just like the device mentioned at the beginning, will strive for an equilibrium value C L ( ⁇ ) at which the desired application of chemicals C k g then occurs the material web M is reached when leaving the first bath FI or the center crushing unit 13.
  • This change in the chemical concentration C L (t) is continuously monitored by the analyzer 21 from the start time over a certain period of time, for example about a few minutes.
  • the chemical concentration in the bath is known to follow an exponential curve, the beginning of which is practically linear.
  • the computer 23 now uses suitable mathematical methods, for example linear regression, to determine the practically constant speed Q of the concentration change during the observation period and then uses this to calculate the characteristic value linking the chemical concentration C L ( ⁇ ) in the bath mi L to the chemical application C kg on the material web F R , which includes practically all material-specific factors that cannot be measured on the running device, according to the relationship: where C O , C kg , K t and Q have the meaning already mentioned and F is the volume of the impregnating bath Fl.
  • the value F R is now in the computer according to the relationship calculates that equilibrium value C L (see) for the chemical concentration in the bath Fl, which guarantees the desired application of chemicals C k g, and this equilibrium value is now set by metered addition of chemicals via the computer 23 and metering valve 10a in the impregnation bath F.
  • the value F R 'and from this according to the relationship calculates the equilibrium concentration C L '( ⁇ ) in the second bath F2 that leads to the desired application of chemicals C kg .
  • This concentration value C L '( ⁇ ) is then also set via computer 23 and metering valve 10b.
  • the deleted sizes in the two formulas above mean the same thing as the corresponding uncoated sizes in the formulas for the first bath; the factor S is a system constant which, although not exactly known, can be assumed to be about 0.8 under normal impregnation conditions with sufficient accuracy for practical use.
  • the first, smaller bath Fl thus serves to achieve the desired chemical application in terms of quantity, while in the second bath the necessary penetration and uniform distribution of the chemicals on and in the material web is achieved.
  • the equilibrium achieved can be established relatively quickly, although the chemical is generally not sufficiently uniformly distributed; the latter is only effected in the second bath.
  • the device according to the invention just described is not only suitable for treatment with non-substantive, but also particularly for substantive chemicals, that is to say those with a certain chemical affinity for the material web.
  • the concentration correction of the impregnation baths is carried out in the manner described on the basis of the measured concentration values of a non-substantive indicator substance, for example H 2 0 2 , but the equilibrium value C L (o °) according to the substantivity of the Chemicals is modified.
  • the additional analysis device 22 selectively determines the concentration of the substantive chemical in the baths.
  • the computer 23 compares this with the concentration of the non-substantive indi determined by the analysis device 21 kator substance and uses this comparison to determine the substantivity of the chemical in question.
  • the equilibrium concentration to be regulated must then be reduced accordingly by this substantivity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP83810066A 1982-02-23 1983-02-17 Procédé et installation pour imprégner une matière en bande avec un produit chimique Withdrawn EP0087391A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1103/82 1982-02-23
CH110382 1982-02-23

Publications (1)

Publication Number Publication Date
EP0087391A1 true EP0087391A1 (fr) 1983-08-31

Family

ID=4202542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810066A Withdrawn EP0087391A1 (fr) 1982-02-23 1983-02-17 Procédé et installation pour imprégner une matière en bande avec un produit chimique

Country Status (1)

Country Link
EP (1) EP0087391A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001548A1 (fr) * 1984-08-31 1986-03-13 Johannes Zimmer Procede et dispositif pour appliquer une substance fluide
EP0302219A2 (fr) * 1987-08-04 1989-02-08 Brückner Apparatebau GmbH Procédé et installation de traitement humide-sur-humide de matières textiles
EP0321904A1 (fr) * 1987-12-18 1989-06-28 Ramisch Kleinewefers GmbH Procédé pour optimaliser l'écoulement et la température d'un liquide de lavage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024507A (en) * 1962-12-19 1966-03-30 John Godrich A dyeing installation for dyeing fibre or fabrics
FR1519151A (fr) * 1966-04-14 1968-03-29 Artos Meier Windhorst Kg Procédé et dispositif pour le traitement humide de bandes textiles ou autres
FR1582989A (fr) * 1967-09-07 1969-10-10
FR2455111A1 (fr) * 1979-04-27 1980-11-21 Heraeus Gmbh W C Dispositif pour reguler l'absorption de colorants d'un bain de teinture par un produit textile ou analogue

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1024507A (en) * 1962-12-19 1966-03-30 John Godrich A dyeing installation for dyeing fibre or fabrics
FR1519151A (fr) * 1966-04-14 1968-03-29 Artos Meier Windhorst Kg Procédé et dispositif pour le traitement humide de bandes textiles ou autres
FR1582989A (fr) * 1967-09-07 1969-10-10
FR2455111A1 (fr) * 1979-04-27 1980-11-21 Heraeus Gmbh W C Dispositif pour reguler l'absorption de colorants d'un bain de teinture par un produit textile ou analogue

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001548A1 (fr) * 1984-08-31 1986-03-13 Johannes Zimmer Procede et dispositif pour appliquer une substance fluide
US4833748A (en) * 1984-08-31 1989-05-30 Johannes Zimmer Method and device for applying a flowable substance
EP0302219A2 (fr) * 1987-08-04 1989-02-08 Brückner Apparatebau GmbH Procédé et installation de traitement humide-sur-humide de matières textiles
EP0302219A3 (en) * 1987-08-04 1989-08-09 Bruckner Apparatebau Gmbh Method and apparatus for the wet-on-wet treatment of textile materials
EP0321904A1 (fr) * 1987-12-18 1989-06-28 Ramisch Kleinewefers GmbH Procédé pour optimaliser l'écoulement et la température d'un liquide de lavage
US4922566A (en) * 1987-12-18 1990-05-08 Ravensbergen Daniel W Method for optimizing flow and temperature in wash water when washing out fabric webs

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19830219

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Effective date: 19850801

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Inventor name: OXE, JOSEF