WO1991013199A1 - Continuous process and installation for bleaching a textile fabric web - Google Patents

Continuous process and installation for bleaching a textile fabric web Download PDF

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Publication number
WO1991013199A1
WO1991013199A1 PCT/DE1991/000102 DE9100102W WO9113199A1 WO 1991013199 A1 WO1991013199 A1 WO 1991013199A1 DE 9100102 W DE9100102 W DE 9100102W WO 9113199 A1 WO9113199 A1 WO 9113199A1
Authority
WO
WIPO (PCT)
Prior art keywords
washing
liquor
bleaching
section
damper
Prior art date
Application number
PCT/DE1991/000102
Other languages
German (de)
French (fr)
Inventor
Horst Holderer
Original Assignee
Eduard Küsters Maschinenfabrik GmbH & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eduard Küsters Maschinenfabrik GmbH & Co. KG filed Critical Eduard Küsters Maschinenfabrik GmbH & Co. KG
Priority to JP3503656A priority Critical patent/JPH0672358B2/en
Priority to DE59105397T priority patent/DE59105397D1/en
Priority to BR919105859A priority patent/BR9105859A/en
Priority to EP91903274A priority patent/EP0517711B1/en
Publication of WO1991013199A1 publication Critical patent/WO1991013199A1/en
Priority to SU925053103A priority patent/RU2041996C1/en

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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
    • D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
    • 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
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/20—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric

Definitions

  • the invention relates to a continuous process for bleaching a textile web and a corresponding machine system.
  • a bleaching liquor which contains, for example, sodium hydroxide solution and peroxide and which acts in a damper on the fabric for a certain dwell time, is applied to a textile fabric web consisting entirely or predominantly of cotton. Subsequently, the fabric is freed of the applied chemicals and the dissolved substances in an intensive wash and is then ready for the dyeing process.
  • this standard method results in a good degree of whiteness and freedom from shells, but the hydrophilicity sometimes leaves something to be desired, which means that the fabric web does not greedily accept the dyeing liquor.
  • the hydrophilicity is determined by how much of the waxes and fats on the cotton fiber could be dissolved by the treatment with NaOH. If this solution is not completely complete and some of the waxes and fats remain on the web, the hydrophilicity is poor and the dyeing liquid is correspondingly poorly accepted.
  • the washing device consists of several individual washing machines arranged one behind the other, which are designed, for example, as roller skids. Such a series of washing machines is operated for reasons of economy in the known embodiments in countercurrent, i.e. the fresh water is added at the end of the row and flows from one washing machine to the other in the direction of web travel, in order to be directed "into the channel" at the last washing machine in the flow direction and the first web direction.
  • the object of the invention is to improve the treatment result with regard to the hydrophilic properties of the web in a generic method or such a system.
  • used washing liquor is not discharged immediately at the beginning of the washing machine section, but only at a later point in time in the sense of the direction of travel of the web, namely at the boundary between the direct current section and the countercurrent section.
  • the invention includes that the total amount of the portion at the end of the counter current portion used washing liquid is used at the beginning of the DC section, ie immediately after the damper. However, it is preferred to use only a subset of the total amount of washing liquid used in the countercurrent section at the beginning of the direct current section.
  • the combined effect of these measures is that the residual chemicals on the web are not rinsed off with a large supply of washing liquid and immediately drained off, but that the residual chemicals are only exposed to a reduced washing attack and have the opportunity to have an after-effect in the direct current section.
  • the inventive design of the washing device consisting of several washing machines thus artificially extends the exposure time of the residual chemicals, in particular the chemicals relevant for the solution of the waxes and fats, in particular the sodium hydroxide solution, so that the detachment of these waxes and fats is improved accordingly and good hydrophilic properties are established.
  • the previously usual brewing stage with NaOH which precedes the bleaching stage with peroxide, can be dispensed with, and real one-stage bleaching can be achieved by applying NaOH and peroxide together with a somewhat increased NaOH concentration and thus passing the web through the damper is driven.
  • the saving of the brewing stage after which the NaOH had to be washed out again which is mostly possible according to the invention by the mere design of the washing process, also represents an important advantage from the point of view of reducing the environmental impact Amount of NaOH required to dissolve the waxes and fats and placed together with the peroxide in a treatment liquor, but NaOH is also present in the bleach liquor if there is a brewing stage.
  • the total exposure to NaOH is, however, at one possible elimination of the brewing level is lower.
  • the bleaching with NaOH and peroxide corresponds to the preferred application of the invention, but this is not restricted to this.
  • the washing liquor is therefore already partially used and contains the washed-out residual chemicals, which is used in the direct current section, so that the web is treated there to a certain extent "in its own juice” and the residual chemicals in the washing liquor contain the opportunity to influence the hydrophilicity to have further influence on the web after leaving the damper.
  • Claims 3 and 4 reflect the apparatus configuration of the continuous system according to the invention.
  • the fabric web 10 is first prewashed intensively and then provided with a bleaching liquor which can contain, for example, sodium hydroxide solution and peroxide.
  • a bleaching liquor which can contain, for example, sodium hydroxide solution and peroxide.
  • the thus loaded goods 10 then has a dwell time brought behind in a damper 1, the end region is shown on the left side of the drawing.
  • the damper is followed by a washing device designated as a whole by 2.
  • the material web 10 then runs through a sink 3 and a roller crusher 4 and is finally wound up into a dock 5.
  • the washing device 2 consists of four washing machines 6, 7, 8, 9 connected in series in the direction of travel of the web 10, which are designed as so-called roller runners and in turn are each divided into four washing compartments, as is the case with the Washing machine 6 is indicated by the reference numbers 6 .., 6 2 , 6., And 6-.
  • the fresh water is fed via line 11 and a filter 11 'to a pump 13, which pumps it via a control valve 14 and a heat exchanger 15 at 16 into the last washing machine at the very end of the row of washing machines 6, 7, 8, 9 9 initiates.
  • the fresh water forms at the bottom of the washing machines 6, 7, 8, 9 a washing liquor which flows in the washing machines 9 and 8 against the direction of travel of the web 10 indicated by the arrows and in the manner shown in the drawing from the washing machine 9 flows into the washing machine 8 in order to be drawn off via the line 17 into an intermediate container 18 at the entrance of the washing machine 8 (seen in the direction of travel of the product web 10), from which overflowing washing liquor via the line 19 into the heat exchanger 15 and from this into the "Channel" 20 arrives.
  • the wash liquor is heated in the washing machines 6, 7, 8, 9 and has an elevated temperature. The heat is transferred in the heat exchanger 15 to the fresh water added.
  • a portion of the wash liquor which has entered the intermediate container 18 is pumped via the pump 21 and the control valve 22 and the line 23 at the inlet 27 (in the direction of flow of the Material web 10 seen) of the washing machine 6, that is, at a point immediately following the damper 1, entered and flows through the washing machine 6 and then through the washing machine 7, in order to be discharged either directly into the channel or via the line at its outlet 28
  • the web 10 therefore remains in the first washing machines 6, 7 in a washing liquor which has already been partially used up, flows in accordance with the running direction of the web 10 and only goes into the channel 20 at the outlet 28 of the washing machine 7. In the washing machines 6, 7, the web 10 is therefore not immediately thoroughly rinsed out, but the bleaching liquor remaining on the web 10 has the opportunity to act. In the intermediate section given by the washing machines 6, 7 there is a transition from a liquor ratio of approximately 1: 1 in the damper 1 to a liquor ratio of approximately 1: 2 to
  • the amount of wash liquor removed from the intermediate container 18 by the pump 21 is 10% to 50% of the wash liquor passed through the washing machines 8.9.
  • the entire washing device 2 is thus in a direct current section immediately following the damper 1

Abstract

In the continuous-bleaching installation described, the steamer unit (1) is followed by a washing unit (2) comprising several individual washing machines (6, 7, 8, 9). The washing machines (6, 7) immediately downstream of the steamer unit (1) are operated in co-current flow, and are fed with 10-50 % of the washing liquor throughput of the last washing machines (8, 9) which are operated on the counterflow principle.

Description

Kontinue-Verfahren und -anläge zum Bleichen einer textilen Warenbahn Continuous processes and systems for bleaching a textile web
Die Erfindung bezieht sich auf ein Kontinue-Verfahren zum Bleichen einer textilen Warenbahn sowie eine entspre¬ chende Maschinenanlage.The invention relates to a continuous process for bleaching a textile web and a corresponding machine system.
Zum Bleichen wird auf eine ganz oder überwiegend aus Baumwolle bestehende textile Warenbahn nach einer Vorwäsche eine Bleichflotte aufgetragen, die beispielsweise Natron¬ lauge und Peroxid enthält und in einem Dämpfer während einer bestimmten Verweildauer auf die Warenbahn einwirkt. Anschließend wird die Warenbahn in einer intensiven Wäsche von den aufgetragenen Chemikalien und den gelösten Stoffen befreit und ist dann für den Färbevorgang bereit.For bleaching, a bleaching liquor, which contains, for example, sodium hydroxide solution and peroxide and which acts in a damper on the fabric for a certain dwell time, is applied to a textile fabric web consisting entirely or predominantly of cotton. Subsequently, the fabric is freed of the applied chemicals and the dissolved substances in an intensive wash and is then ready for the dyeing process.
Dieses standardmäßige Verfahren ergibt in den bekann¬ ten Ausführungsformen zwar einen guten Weißgrad und Frei¬ heit von Schalen, doch läßt die Hydrophilität manchmal noch zu wünschen übrig, was bedeutet, daß die Warenbahn die Färbeflotte nicht begierig genug annimmt. Die Hydro¬ philität wird davon bestimmt, wieviel von den auf der Baumwollfaser befindlichen Wachsen und Fetten durch die Behandlung mit NaOH gelöst werden konnte. Ist diese Lösung nicht ganz vollständig und verbleibt noch einiges von den Wachsen und Fetten auf der Warenbahn, so ist die Hydro- philie schlecht und wird die Färbeflüssigkeit entsprechend schlecht angenommen.In the known embodiments, this standard method results in a good degree of whiteness and freedom from shells, but the hydrophilicity sometimes leaves something to be desired, which means that the fabric web does not greedily accept the dyeing liquor. The hydrophilicity is determined by how much of the waxes and fats on the cotton fiber could be dissolved by the treatment with NaOH. If this solution is not completely complete and some of the waxes and fats remain on the web, the hydrophilicity is poor and the dyeing liquid is correspondingly poorly accepted.
Am Ende ihres Weges durch den Dämpfer sind die auf¬ getragenen Chemikalien noch nicht restlos verbraucht, sondern es befindet sich noch ein gewisser Anteil an Rest¬ chemikalien auf der Warenbhan, wenn diese in die Waschein¬ richtung einläuft.At the end of their journey through the damper, the chemicals applied have not yet been completely used up. rather, there is still a certain proportion of residual chemicals on the goods web when it runs into the washing device.
Die Wascheinrichtung besteht aus mehreren hinterein¬ ander angeordneten einzelnen Waschmaschinen, die beispiels¬ weise als Rollenkufen ausgebildet sind. Eine derartige Reihe von Waschmaschinen wird aus Gründen der Wirtschaft¬ lichkeit bei den bekannten Ausführungsformen im Gegenstrom betrieben, d.h. das Frischwasser wird am Ende der Reihe zu¬ gesetzt und strömt der Warenbahnlaufrichtung entgegen von einer Waschmaschine zur anderen, um an der in Strömungs¬ richtung letzten und in Warenbahnlaufrichtung ersten Wasch¬ maschine "in den Kanal" geleitet zu werden.The washing device consists of several individual washing machines arranged one behind the other, which are designed, for example, as roller skids. Such a series of washing machines is operated for reasons of economy in the known embodiments in countercurrent, i.e. the fresh water is added at the end of the row and flows from one washing machine to the other in the direction of web travel, in order to be directed "into the channel" at the last washing machine in the flow direction and the first web direction.
Bezogen auf die Bleichanlage war es also so, daß die Warenbahn am Ende des Dämpfers mit einem großen durchge¬ setzten Flüssigkeitsangebot konfrontiert wurde, welches sogleich in der' ersten Waschmaschine abgeleitet wurde. Da¬ durch wurden die auf der Warenbahn befindlichen Restchemi¬ kalien sogleich zu Anfang abgespült und entfernt.Based on the bleach plant, it was therefore so that the web at the end of the damper set with a large liquid offering durchge was confronted, which was immediately discharged into the 'first washing machine. As a result, the residual chemicals on the web were rinsed and removed at the beginning.
Der Erfindung liegt die Aufgabe zugrunde, bei einem gattungsgemäßen Verfahren bzw. einer solchen Anlage das Behandlungsergebnis im Hinblick auf die hydrophilen Eigen¬ schaften der Warenbahn zu verbessern.The object of the invention is to improve the treatment result with regard to the hydrophilic properties of the web in a generic method or such a system.
Diese Aufgabe wird erfindungsgemäß in ihrem verfah¬ rensmäßigen Aspekt in der in Anspruch 1 wiedergegebenen Weise gelöst.According to the invention, this object is achieved in its procedural aspect in the manner set out in claim 1.
Durch die Führung der Waschflotte im Gleichstrom wird zunächst erreicht, daß die Ableitung verbrauchter Wasch¬ flotte nicht sogleich am Anfang der Strecke der Waschma¬ schinen erfolgt, sondern erst zu einem späteren Zeitpunkt, im Sinne der Warenbahnlaufrichtung gesehen, nämlich an der Grenze zwischen dem Gleichstromabschnitt und dem Gegen- stromabschnitt. Die Erfindung umfaßt, daß die Gesamtmenge der am Ende des Gegenstro abschnitts anfallenden teilweise verbrauchten Waschflüssigkeit zu Beginn des Gleichstromab¬ schnitts, also unmittelbar nach dem Dämpfer, eingesetzt wird. Bevorzugt ist aber der Einsatz nur einer Teilmenge der im Gegenstromabschnitt eingesetzten gesamten Waschflüs- sigkeitsmenge am Beginn des Gleichstromabschnittes. Die kombinierte Wirkung dieser Maßnahmen besteht darin, daß die auf der Warenbahn befindlichen Restchemikalien nicht mit einem großen Angebot an Waschflüssigkeit abgespült und sogleich abgeleitet werden, sondern daß die Restchemikalien nur einem verminderten Waschangriff ausgesetzt sind und in dem Gleichstromabschnitt Gelegenheit zur Nachwirkung haben. Durch die erfindungsgemäße Gestaltung der aus mehreren Waschmaschinen bestehenden Wascheinrichtung wird also die Einwirkzeit der Restchemikalien, und zwar insbesondere der für die Lösung der Wachse und Fette maßgeblichen Chemika¬ lien, insbesondere der Natronlauge, künstlich verlängert, so daß die Ablösung dieser Wachse und Fette entsprechend verbessert wird und sich gute hydrophile Eigenschaften ein¬ stellen. In vielen Fällen kann dadurch auf die bisher noch übliche, der Bleichstufe mit Peroxid vorgeschaltete Brüh¬ stufe mit NaOH verzichtet und eine echte einstufige Bleiche erreicht werden, indem NaOH und Peroxid zusammen mit allen¬ falls etwas erhöhter NaOH-Konzentration aufgetragen und die Warenbahn damit durch den Dämpfer gefahren wird. Die erfindungsgemäß durch die bloße Ausgestaltung des Wasch¬ prozesses meist mögliche Einsparung der Brühstufe, nach der das NaOH ja wieder ausgewaschen werden mußte, stellt auch unter dem Gesichtspunkt der Verminderung der Umwelt¬ belastung einen wichtigen Vorteil dar. Zwar wird auch bei der Erfindung eine bestimmte Menge an NaOH zur Lösung der Wachse und Fette benötigt und zusammen mit dem Peroxid in einer Behandlungsflotte untergebracht, doch ist auch bei Vorhandensein einer Brühstufe in der Bleichflotte NaOH zugegen. Die Gesamtbelastung mit NaOH wird jedoch bei einem möglichen Entfall der Brühstufe geringer. Die Bleiche mit NaOH und Peroxid entspricht dem bevorzugten Anwendungsfall der Erfindung, doch ist diese darauf nicht beschränkt.By guiding the washing liquor in direct current, it is first achieved that used washing liquor is not discharged immediately at the beginning of the washing machine section, but only at a later point in time in the sense of the direction of travel of the web, namely at the boundary between the direct current section and the countercurrent section. The invention includes that the total amount of the portion at the end of the counter current portion used washing liquid is used at the beginning of the DC section, ie immediately after the damper. However, it is preferred to use only a subset of the total amount of washing liquid used in the countercurrent section at the beginning of the direct current section. The combined effect of these measures is that the residual chemicals on the web are not rinsed off with a large supply of washing liquid and immediately drained off, but that the residual chemicals are only exposed to a reduced washing attack and have the opportunity to have an after-effect in the direct current section. The inventive design of the washing device consisting of several washing machines thus artificially extends the exposure time of the residual chemicals, in particular the chemicals relevant for the solution of the waxes and fats, in particular the sodium hydroxide solution, so that the detachment of these waxes and fats is improved accordingly and good hydrophilic properties are established. In many cases, the previously usual brewing stage with NaOH, which precedes the bleaching stage with peroxide, can be dispensed with, and real one-stage bleaching can be achieved by applying NaOH and peroxide together with a somewhat increased NaOH concentration and thus passing the web through the damper is driven. The saving of the brewing stage after which the NaOH had to be washed out again, which is mostly possible according to the invention by the mere design of the washing process, also represents an important advantage from the point of view of reducing the environmental impact Amount of NaOH required to dissolve the waxes and fats and placed together with the peroxide in a treatment liquor, but NaOH is also present in the bleach liquor if there is a brewing stage. The total exposure to NaOH is, however, at one possible elimination of the brewing level is lower. The bleaching with NaOH and peroxide corresponds to the preferred application of the invention, but this is not restricted to this.
Aus der Schriftstelle "Melliand Textilberichte" 61 (1980), Seitenzahl 58 bis 261, insbesondere Seite 260 unter der Überschrift "Geschwindigkeitsneutralität", Punkt 2., ist bereits ein Hinweis darauf zu entnehmen, daß beim kon¬ tinuierlichen Bleichen vor der eigentlichen Verdünnungs¬ wäsche eine Zwischensektion eingeschaltet werden solle, bei der von dem Flottenverhältnis von etwa 1 : 1 zunächst auf ein grlßeres Lösungsvolumen, welches auch das ausgewaschene NaOH enthält, überzugehen. Wie dies allerdings konkret be¬ werkstelligt werden soll, ist aus der Schriftstelle nicht zu entnehmen.From the document "Melliand Textile Reports" 61 (1980), pages 58 to 261, in particular page 260 under the heading "Speed neutrality", point 2, a reference can already be made to the fact that continuous bleaching before the actual dilution an intermediate section should be switched on, in which the liquor ratio of about 1: 1 is initially passed to a larger solution volume, which also contains the washed-out NaOH. However, it is not clear from the scripture how this is to be achieved in concrete terms.
Wenn nur eine Teilmenge der Waschflotte des Gegen- stromabschnitts für das Waschen im Gleichstromabschnitt verwendet wird, kann diese nach Anspruch 2 bemessen werden.If only a subset of the washing liquor of the countercurrent section is used for washing in the cocurrent section, this can be dimensioned according to claim 2.
Es handelt sich also um bereits teilweise verbrauchte und die herausgewaschenen Restchemikalien enthaltende Waschflotte, die in dem Gleichstromabschnitt verwendet wird, so daß die Warenbahn dort gewissermaßen "im eigenen Saft" behandelt wird und die in der Waschflotte enthalte¬ nen die Hydrophilie beeinflussenden Restchemikalien Gele¬ genheit zu weiterer Einwirkung auf die Bahn nach dem Ver¬ lassen des Dämpfers haben.The washing liquor is therefore already partially used and contains the washed-out residual chemicals, which is used in the direct current section, so that the web is treated there to a certain extent "in its own juice" and the residual chemicals in the washing liquor contain the opportunity to influence the hydrophilicity to have further influence on the web after leaving the damper.
Ansprüche 3 und 4 geben die apparative Ausgestaltung der erfindungsgemäßen Kontinue-Anlage wieder.Claims 3 and 4 reflect the apparatus configuration of the continuous system according to the invention.
In der Zeichnung ist der für die Erfindung maßgeb¬ liche Teil einer Kontinue-Bleichanlage in Seitenansicht schematisch wiedergegeben.In the drawing, the part of a continuous bleaching plant which is decisive for the invention is shown schematically in a side view.
Die Warenbahn 10 ist zunächst intensiv vorgewaschen und sodann mit einer Bleichflotte versehen worden, die beispielsweise Natronlauge und Peroxid enthalten kann. Die so beladene Warenbhan 10 hat dann eine Verweilzeit in einem Dämpfer 1 hinter sich gebracht, dessen Endbereich auf der linken Seite der Zeichnung wiedergegeben ist. An den Dämpfer schließt sich eine als Ganzes mit 2 bezeichne¬ te Wascheinrichtung an. Die Warenbahn 10 durchläuft an¬ schließend ein Spülbecken 3 sowie ein Rollenquetschwerk 4 und wird am Schluß zu einer Docke 5 aufgewickelt.The fabric web 10 is first prewashed intensively and then provided with a bleaching liquor which can contain, for example, sodium hydroxide solution and peroxide. The thus loaded goods 10 then has a dwell time brought behind in a damper 1, the end region is shown on the left side of the drawing. The damper is followed by a washing device designated as a whole by 2. The material web 10 then runs through a sink 3 and a roller crusher 4 and is finally wound up into a dock 5.
Die Wascheinrichtung 2 besteht in dem Ausführungsbei¬ spiel aus vier in Laufrichtung der Warenbahn 10 hinterein- andergeschalteten Waschmaschinen 6,7,8,9, die als soge¬ nannte Rollenkufen ausgebildet sind und jeweils ihrerseits wieder in vier Waschabteile unterteilt sind, wie es bei der Waschmaschine 6 durch die Bezugszahlen 6..,62,6., und 6- angedeutet ist.In the exemplary embodiment, the washing device 2 consists of four washing machines 6, 7, 8, 9 connected in series in the direction of travel of the web 10, which are designed as so-called roller runners and in turn are each divided into four washing compartments, as is the case with the Washing machine 6 is indicated by the reference numbers 6 .., 6 2 , 6., And 6-.
Das Frischwasser wird über die Leitung 11 und einen Filter 11' einer Pumpe 13 zugeführt, die es über ein Steu¬ erventil 14 und einen Wärmetauscher 15 bei 16 also ganz am Ende der Reihe der Waschmaschinen 6,7,8,9 in die letzte Waschmaschine 9 einleitet. Das Frischwasser bildet am Boden der Waschmaschinen 6,7,8,9 eine Waschflotte, die in den Waschmaschinen 9 und 8 entgegen der durch die Pfeile ange¬ deuteten Laufrichtung der Warenbahn 10 strömt und in der aus der Zeichnung ersichtlichen Weise von der Waschmaschi¬ ne 9 in die Waschmaschine 8 überströmt, um am Eingang der Waschmaschine 8 (in Laufrichtung der Warenbahn 10 gesehen) über die Leitung 17 in einen Zwischenbehälter 18 abgezogen zu werden, aus welchem überlaufende Waschflotte über die Leitung 19 in den Wärmetauscher 15 und von diesem in den "Kanal" 20 gelangt. Die Waschflotte wird in den Waschma¬ schinen 6,7,8,9 beheizt und hat eine erhöhte Temperatur. Die Wärme wird in dem Wärmetauscher 15 auf das zugegebene Frischwasser übertragen.The fresh water is fed via line 11 and a filter 11 'to a pump 13, which pumps it via a control valve 14 and a heat exchanger 15 at 16 into the last washing machine at the very end of the row of washing machines 6, 7, 8, 9 9 initiates. The fresh water forms at the bottom of the washing machines 6, 7, 8, 9 a washing liquor which flows in the washing machines 9 and 8 against the direction of travel of the web 10 indicated by the arrows and in the manner shown in the drawing from the washing machine 9 flows into the washing machine 8 in order to be drawn off via the line 17 into an intermediate container 18 at the entrance of the washing machine 8 (seen in the direction of travel of the product web 10), from which overflowing washing liquor via the line 19 into the heat exchanger 15 and from this into the "Channel" 20 arrives. The wash liquor is heated in the washing machines 6, 7, 8, 9 and has an elevated temperature. The heat is transferred in the heat exchanger 15 to the fresh water added.
Ein Teil der in den Zwischenbehälter 18 gelangten Waschflotte wird über die Pumpe 21 und das Steuerventil 22 und die Leitung 23 am Eingang 27 (in Laufrichtung der Warenbahn 10 gesehen) der Waschmaschine 6, also an einer dem Dämpfer 1 unmittelbar folgenden Stelle, eingegeben und durchströmt die Waschmaschine 6 sowie anschließend die Waschmaschine 7, um an deren Auslauf 28 entweder direkt in den Kanal abgeleitet zu werden oder über die LeitungA portion of the wash liquor which has entered the intermediate container 18 is pumped via the pump 21 and the control valve 22 and the line 23 at the inlet 27 (in the direction of flow of the Material web 10 seen) of the washing machine 6, that is, at a point immediately following the damper 1, entered and flows through the washing machine 6 and then through the washing machine 7, in order to be discharged either directly into the channel or via the line at its outlet 28
24 durch den Wärmetauscher und dann in den Kanal 20 zu ge¬ langen. Die Warenbahn 10 verbleibt also in den ersten Waschmaschinen 6,7 in einer schon teilweise verbrauchten Waschflotte, die entsprechend der Laufrichtung der Waren¬ bahn 10 strömt und erst am Auslauf 28 der Waschmaschine 7 in den Kanal 20 abgeht. In den Waschmaschinen 6,7 wird also die Warenbahn 10 nicht sogleich durchgreifend ausgespült, sondern es hat auf der Warenbahn 10 verbliebene Bleich¬ flotte Gelegenheit zum Nachwirken. In der durch die Wasch¬ maschinen 6,7 gegebenen Zwischensektion erfolgt ein Über¬ gang von einem Flottenverhältniε von etwa 1 : 1 in dem Dämpfer 1 auf ein Flottenverhältnis von etwa 1 : 2 bis24 through the heat exchanger and then into channel 20. The web 10 therefore remains in the first washing machines 6, 7 in a washing liquor which has already been partially used up, flows in accordance with the running direction of the web 10 and only goes into the channel 20 at the outlet 28 of the washing machine 7. In the washing machines 6, 7, the web 10 is therefore not immediately thoroughly rinsed out, but the bleaching liquor remaining on the web 10 has the opportunity to act. In the intermediate section given by the washing machines 6, 7 there is a transition from a liquor ratio of approximately 1: 1 in the damper 1 to a liquor ratio of approximately 1: 2 to
1 : 4, d.h. auf ein größeres Lösungsvolumen, welches das schon ausgewaschene NaOH aber noch enthält.1: 4, i.e. to a larger solution volume, which still contains the NaOH that has already been washed out.
Die Menge der durch die Pumpe 21 dem Zwischenbehälter 18 entnommenen Waschflotte beträgt 10 % bis 50 % der durch die Waschmaschinen 8,9 durchgesetzten Waschflotte.The amount of wash liquor removed from the intermediate container 18 by the pump 21 is 10% to 50% of the wash liquor passed through the washing machines 8.9.
Während die Waschflotte in den Waschmaschinen 9 und 8 im Gegenstrom zur Laufrichtung der Warenbahn 10 durchge¬ setzt wird, erfolgt der Durchsatz in den Waschmaschinen 6 und 7 im Gleichstrom zur Laufrichtung der Warenbahn 10.While the washing liquor is passed through in the washing machines 9 and 8 in countercurrent to the running direction of the web 10, the throughput in the washing machines 6 and 7 takes place in cocurrent to the running direction of the web 10.
Die gesamte Wascheinrichtung 2 ist also in einen dem Dämpfer 1 unmittelbar nachfolgenden GleichstromabschnittThe entire washing device 2 is thus in a direct current section immediately following the damper 1
25 und einen sich an diesen anschließenden Gegenstromab- schnitt 26 unterteilt, wie sie durch die großen Pfeile angedeutet sind. 25 and a countercurrent section 26 adjoining this, as indicated by the large arrows.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Kontinue-Verfahren zum Bleichen einer ganz oder überwiegend aus Baumwolle bestehenden textilen Warenbahn (10) , bei welchem die Bleichflotte auf die Warenbahn (10) aufgetragen und die Warenbahn (10) damit durch einen Dämp¬ fer (1) gefahren und anschließend in einer Reihe von Wasch¬ maschinen (6,7,8,9) gewaschen wird, von denen bei den letzten (8,9) die Waschflotte im Gegenstrom zur Warenbahn¬ laufrichtung geführt ist, dadurch gekennzeichnet, daß in den ersten an den Dämpfer (1) anschließenden Waschmaschinen (6,8) das Waschen im Gleichstrom mit Hilfe mindestens einer am Eingang (27) der ersten Waschmaschine (6) zugesetzten und am Ende des Gegenstromabschnitts (26) entnommenen Teilmenge der im Gegenstromabschnitt (26) ein¬ gesetzten Waschflottenmenge erfolgt.1. Continuous process for bleaching a textile fabric web (10) consisting entirely or predominantly of cotton, in which the bleaching liquor is applied to the fabric web (10) and the fabric web (10) is thus driven through a damper (1) and then in a series of washing machines (6, 7, 8, 9) is washed, of which in the last (8,9) the washing liquor is guided in countercurrent to the direction of travel of the web, characterized in that in the first to the damper ( 1) subsequent washing machines (6, 8), the washing in cocurrent is carried out with the aid of at least one portion of the amount of washing liquor used in the countercurrent section (26) added to the entrance (27) of the first washing machine (6) and removed at the end of the countercurrent section (26) .
2. Kontinue-Verfahren nach Anspruch 1, dadurch ge¬ kennzeichnet, daß die Menge der der ersten Waschmaschine (6) zugesetzten Waschflotte nur etwa 10 % bis 50 % der im2. Continuous process according to claim 1, characterized ge indicates that the amount of the washing machine added to the first washing machine (6) is only about 10% to 50% of the
Gegenstromabschnitt (26) durchgesetzten Waschflottenmenge beträgt. Counterflow section (26) throughput of washing liquor.
3. Kontinue-Anlage zum Bleichen einer ganz oder überwiegend aus Baumwolle bestehenden textilen Warenbahn mit einer Auftragseinrichtung für die Bleichflotte, mit einem der Auftragseinrichtung nachgeschalteten3. Continuous system for bleaching a textile fabric web consisting entirely or predominantly of cotton with an application device for the bleaching liquor, with one downstream of the application device
Dämpfer (1) und mit einer dem Dämpfer (1) nachgeschalteten, aus mehreren einzelnen Waschmaschinen (6,7,8,9) bestehendenDamper (1) and with a downstream of the damper (1), consisting of several individual washing machines (6,7,8,9)
Wascheinrichtung (2) , bei der die letzten WaschmaschinenWashing device (2), in which the last washing machines
(8,9) im Gagenstrom betrieben sind, dadurch gekennzeichnet, daß die ersten dem Dämpfer (1) folgenden Waschmaschi¬ nen (6,7) im Gleichstrom betrieben sind und dem Gleich¬ stromabschnitt (25) die Waschflotte über eine vom Ende des Gegenstromabschnitts (26) ausgehende Leitung (23) zu¬ geführt wird.(8,9) are operated in the Gagenstrom, characterized in that the first washing machines (6,7) following the damper (1) are operated in direct current and the direct current section (25) the washing liquor via one from the end of the counterflow section (26) outgoing line (23) is fed.
4. Kontinue-Anlage nach Anspruch 3, dadurch gekenn¬ zeichnet, daß eine Pumpe (21) vorgesehen ist, die minde¬ stens einen Anteil aus der am Ende des Gegenstromabschnitts (26) (in Strδmungsrichtung der Waschflotte gesehen) anfal¬ lenden zu verwerfenden Waschflotte entnimmt und ihn über die Leitung (23) dem Eingang (27) des Gleichstromabschnitts4. Continuity system according to claim 3, characterized gekenn¬ characterized in that a pump (21) is provided, the at least a portion from which at the end of the countercurrent section (26) (seen in the flow direction of the wash liquor) to be rejected Wash liquor and removes it via line (23) to the input (27) of the DC section
(25) zuleitet. (25).
PCT/DE1991/000102 1990-02-26 1991-02-08 Continuous process and installation for bleaching a textile fabric web WO1991013199A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP3503656A JPH0672358B2 (en) 1990-02-26 1991-02-08 Continuous method and apparatus for bleaching fibrous webs
DE59105397T DE59105397D1 (en) 1990-02-26 1991-02-08 CONTINUE METHOD AND SYSTEM FOR BLEACHING A TEXTILE TRACK.
BR919105859A BR9105859A (en) 1990-02-26 1991-02-08 CONTINUOUS PROCESS AND EQUIPMENT TO TARGET A CONTINUOUS PIECE OF TEXTILE ARTICLE
EP91903274A EP0517711B1 (en) 1990-02-26 1991-02-08 Continuous process and installation for bleaching a textile fabric web
SU925053103A RU2041996C1 (en) 1990-02-26 1992-08-25 Method for continuous bleaching of textile fabrics and plant for its realization

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4005979.0 1990-02-26
DE4005979A DE4005979A1 (en) 1990-02-26 1990-02-26 CONTINUE METHOD AND SYSTEM FOR BLEACHING A TEXTILE TRACK

Publications (1)

Publication Number Publication Date
WO1991013199A1 true WO1991013199A1 (en) 1991-09-05

Family

ID=6400970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000102 WO1991013199A1 (en) 1990-02-26 1991-02-08 Continuous process and installation for bleaching a textile fabric web

Country Status (6)

Country Link
EP (1) EP0517711B1 (en)
JP (1) JPH0672358B2 (en)
BR (1) BR9105859A (en)
DE (2) DE4005979A1 (en)
ES (1) ES2071298T3 (en)
WO (1) WO1991013199A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520161A1 (en) * 1991-06-25 1992-12-30 Babcock Textilmaschinen GmbH Apparatus for wet treatment of moving sheet-like materials, e.g. for washing or impregnating

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877244A (en) * 2012-10-24 2013-01-16 吴江德伊时装面料有限公司 High-efficient continuous washing method for fabric

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE1941674A1 (en) * 1969-08-16 1971-02-25 Artos Meier Windhorst Kg Continuous fabric finishing process
US3807950A (en) * 1971-10-13 1974-04-30 R Rogers Method of dyeing and/or washing fabric
GB2051155A (en) * 1979-06-04 1981-01-14 Wakayama Iron Works Apparatus for Continuously Washing Fabric
DE3200146A1 (en) * 1981-01-20 1982-10-07 Sando Iron Works Co., Ltd., Wakayama Process for the continuous dyeing of cloth using an acid dye
US4479370A (en) * 1981-12-10 1984-10-30 Burlington Industries, Inc. Full counterflow mini-bath open-width fabric washer
DE3324650A1 (en) * 1983-07-08 1985-01-17 Babcock Textilmaschinen GmbH, 2105 Seevetal METHOD AND DEVICE FOR THE WET TREATMENT OF WIDTH-BASED RUNNING PRODUCTS
EP0316859A2 (en) * 1987-11-20 1989-05-24 Babcock Textilmaschinen GmbH Method and apparatus for washing moving sheet-like materials

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941674A1 (en) * 1969-08-16 1971-02-25 Artos Meier Windhorst Kg Continuous fabric finishing process
US3807950A (en) * 1971-10-13 1974-04-30 R Rogers Method of dyeing and/or washing fabric
GB2051155A (en) * 1979-06-04 1981-01-14 Wakayama Iron Works Apparatus for Continuously Washing Fabric
DE3200146A1 (en) * 1981-01-20 1982-10-07 Sando Iron Works Co., Ltd., Wakayama Process for the continuous dyeing of cloth using an acid dye
US4479370A (en) * 1981-12-10 1984-10-30 Burlington Industries, Inc. Full counterflow mini-bath open-width fabric washer
DE3324650A1 (en) * 1983-07-08 1985-01-17 Babcock Textilmaschinen GmbH, 2105 Seevetal METHOD AND DEVICE FOR THE WET TREATMENT OF WIDTH-BASED RUNNING PRODUCTS
EP0316859A2 (en) * 1987-11-20 1989-05-24 Babcock Textilmaschinen GmbH Method and apparatus for washing moving sheet-like materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520161A1 (en) * 1991-06-25 1992-12-30 Babcock Textilmaschinen GmbH Apparatus for wet treatment of moving sheet-like materials, e.g. for washing or impregnating

Also Published As

Publication number Publication date
JPH04505484A (en) 1992-09-24
BR9105859A (en) 1992-07-21
DE4005979C2 (en) 1992-05-27
EP0517711B1 (en) 1995-05-03
ES2071298T3 (en) 1995-06-16
DE4005979A1 (en) 1991-08-29
DE59105397D1 (en) 1995-06-08
EP0517711A1 (en) 1992-12-16
JPH0672358B2 (en) 1994-09-14

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