EP0517713B1 - Continuous process for the treatment of textile fabric webs, and an installation for carrying out the process - Google Patents

Continuous process for the treatment of textile fabric webs, and an installation for carrying out the process Download PDF

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Publication number
EP0517713B1
EP0517713B1 EP91903319A EP91903319A EP0517713B1 EP 0517713 B1 EP0517713 B1 EP 0517713B1 EP 91903319 A EP91903319 A EP 91903319A EP 91903319 A EP91903319 A EP 91903319A EP 0517713 B1 EP0517713 B1 EP 0517713B1
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EP
European Patent Office
Prior art keywords
web
applicator
treatment
rollers
movement
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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.)
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EP91903319A
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German (de)
French (fr)
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EP0517713A1 (en
Inventor
Günter von Harten
Walter Keller
Johannes Kutz
Bernhard Benz
Christian Meyer
Wolfgang Kurschatke
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Eduard Kuesters Maschinenfabrik GmbH and Co KG
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Eduard Kuesters Maschinenfabrik GmbH and Co KG
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    • 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
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/0029—Fixing of chemicals, e.g. dyestuffs, on textile materials by steam
    • D06B19/0035—Fixing of chemicals, e.g. dyestuffs, on textile materials by steam the textile material passing through a chamber

Definitions

  • the invention relates to a continuous system for the treatment of textile webs.
  • a two-stage application process and a corresponding system are known from DE 37 33 997.
  • An essential feature of this type of two-stage fleet order is the ability to put more liquid on the train, i.e. To achieve moisture contents (liquid weight in relation to the weight of the dry goods provided with them) which are far above those which can be achieved with devices which work with squeezing devices, if these still have a uniform line pressure and prevent the web from slipping through the pressing pressure.
  • the additional liquid is only applied in the second application device, but is not exchanged for the amount of liquid applied in the first application device. So it is a pure addition impregnation.
  • the invention is based on the object of producing a system in which a material web heavily loaded with treatment liquor is produced, To be designed in such a way that a proper treatment process is ensured in the damper.
  • the heating zone therefore has not only a temperature increase function, but also a penetration and reaction function.
  • the treatment liquor applied last has been pushed into the web and the risk of draining or dripping, which leads to local irregularities, is no longer so great.
  • the further path guidance in the damper can therefore in principle take place in the usual way, although special path guidance is preferred for certain treatments, as will be explained.
  • the web runs in upright loops through a container with a large supply of bleaching liquor. After passing through a vertical heating zone, the web is placed in folds in a J-box in order to remain there, i.e. there is neither a guide nor a steam atmosphere.
  • the continuation of the web in the heating zone of the steamer is adapted to the order of the treatment liquors.
  • the material web is soaked and squeezed with the treatment liquor, whereupon an application is made from both sides to a further treatment liquor, which therefore sits on the outside of the web and with which the treatment liquor already present results in a very high total moisture.
  • the damper ensures that the treatment liquors mix and act and at the same time cannot run down or drip down the web.
  • the deflecting rollers of a group are arranged vertically one above the other, the arrangement allowing the formation of a slight slope and also resulting in a low overall height or in the available height of the damper for accommodating many deflecting rollers.
  • the deflecting roller arrangement is intended to form a narrow, high tower in the initial region of the damper, which, with the small space requirement characterized by claim 2, includes a quite considerable horizontal dwell path with many deflections.
  • the high total liquor application of 100 to 220% possible due to the nature of the second application device in both the method and the system according to claims 2 and 8, which is practically manageable due to the inventive design of the heating zone of the steamer, allows a single-stage NaOH to be carried out / Peroxide bleach, in which NaOH and peroxide are applied in a treatment liquor with a correspondingly high degree of water mobility.
  • a brewing stage upstream of the bleaching process can be saved in many cases. This is achieved by combining a pre-wash in a liquor skid with controlled squeezing, by applying a multi-component bleaching liquor with subsequent wiping to a uniform, very high final moisture level and a damper with heating zones with horizontal loops.
  • the fabric web 10 which consists entirely or largely of cotton fabric, bears impurities such as shells, waxes and fats and also the size, which are introduced with the cotton after production. These substances, which are brought in in an uncontrolled manner, catalyze peroxide decomposition in the case of peroxide bleaching, so that the bleaching process is destabilized. It is therefore necessary to remove these substances as thoroughly as possible before the actual bleaching process.
  • the web 10 after unwinding from the roll, not shown, undergoes an intensive washing process at high temperatures in a plurality of liquor skids, of which the end region of the last liquor skid 1 can be seen on the left-hand side of FIG. 1.
  • the fleet runner 1 forms a first application device in which one first treatment liquor in the form of the washing liquor 2 is applied to the web 10.
  • the web 10 After leaving the fleet runner 1, the web 10 is defined in a squeezer 3 and squeezed evenly across the width to a residual moisture content of about 70%. In the area of the crushing unit 3, the temperature of the web 10 is still approximately 95 ° C., as can be seen from the enlarged illustration in FIG. 2.
  • the material web 10 After leaving the crushing unit 3 and passing through a dancer roller or pendulum roller arrangement 4 which serves to control the preferred speed of the material web, the material web 10 arrives in a second application device 5 of a special type (FIG. 2), in the area of which it is arranged above deflecting rollers 6 arranged one above the other. 7 is guided vertically from top to bottom in a section 10 '. In section 10 ', the web 10 passes through a gap 8 which is formed at the lower end of an upright, narrow trough 9 which extends approximately across the web width and is approximately V-shaped in vertical section.
  • a gap 8 which is formed at the lower end of an upright, narrow trough 9 which extends approximately across the web width and is approximately V-shaped in vertical section.
  • the walls 11, 12 approaching one another from top to bottom have, at the lower end, horizontally transverse chambers 13, 14 which extend across the width of the web and in which are arranged inflatable tubes 15, 16 which abut the web 10 from both sides and the gap 8 close down so that the second treatment liquor 17, which is in the trough 9 up to a relatively low filling level h of 20 to 25 cm, cannot flow down through the gap 8.
  • the fabric web 10 passes through the treatment liquor 17 from top to bottom and is stripped on both sides by the hoses 15, 16, so that it takes along a relatively large, evenly applied amount of the treatment liquor 17 in addition to the residual moisture of the treatment liquor 2 remaining in the web .
  • the treatment liquor is fed into the trough 9 by a large number of arc tubes 18 distributed over the width of the product web 10, which are fed from common supply tubes 19 extending across the web width and deliver the liquid to drain plates 20, from the lower edge of which they enter the trough 9 expires.
  • the feed pipes 19 are fed via a controllable valve 21 from storage containers 22, 23 arranged above the application device 5, which can contain, for example, sodium hydroxide solution and peroxide solution in the exemplary embodiment in which a bleaching liquor is applied.
  • the ratio is set on the valves 24, 25.
  • the material web After leaving the application device 5, the material web is fully loaded with the residual moisture of the treatment liquor 2 and also on both sides with the additionally applied amount of the treatment liquor 17. With an additional application of about 80% total moisture values of about 150%, which lie at the limit of the moisture absorption capacity of the goods.
  • the large amount of moisture forms an ideal liquid supply for the course of the bleaching process, but requires special treatment in the subsequent steamer 30, which has a tower-like heating zone 26, into which the web 10 runs from below.
  • the heating zone comprises two groups 27, 28 of mutually identical, parallel, horizontal, vertically one above the other deflection rollers 29, over which the web 10 is zigzag in essentially horizontal loops 40 from bottom to top.
  • the vertical distance d between two vertically arranged deflection rollers 29 is smaller than the diameter D of a deflection roller 29.
  • the axes of the deflection rollers 29 of one group, for example 28 are centered in height on the axes of the deflection rollers 29 of the other groups, for example 27 , arranged.
  • the web 10 After leaving the heating zone 26, the web 10 enters the actual damper 33. About one to control the preferred speed compensator 34 with dancer roller, the web 10 is, if desired, guided over a dwell path, not shown, with vertical loops. Then or immediately after the heating zone 26, it is transported horizontally on a transport device 50 over a dwell path in folds. It arrives at a table 35, which deposits the web 10 in uniform folds 36 on the top of a rotating drum 37, which takes the fold package with it, turns it in an orderly manner, and deposits it on a horizontal conveyor 38 tangentially departing from the bottom of the drum 37, on which the web 10 covers the dwell in the folded position. A resiliently tensioned band 39 on the side of the drum 37 prevents the fold package from falling down. At the end of the horizontal conveyor 38, not shown, the fold package is pulled apart again. The laundry is then carried out.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The device proposed for the continuous treatment of a textile fabric web comprises one or more applicators, by means of which one or more treatment liquors are applied to the web (10). The web subsequently has an elevated total moisture content in the range of 100-220 % of the dry weight of the fabric. The web (10) passes, with the absorbed liquors, into a tower-like structure containing the heating zone (26) of a steamer box (30), in which the fabric follows a multiplicity of horizontal loops.

Description

Die Erfindung bezieht sich auf eine Kontinue-Anlage zur Behandlung von textilen Warenbahnen.The invention relates to a continuous system for the treatment of textile webs.

Ein zweistufiges Auftragsverfahren und eine entsprechende Anlage sind aus der dE-OS 37 33 997 bekannt. Ein wesentliches Merkmal dieser Art des zweistufigen Flottenauftrags ist die Möglichkeit, mehr Flüssigkeit auf die Bahn zu bringen, d.h. Feuchtigkeitsgehalte (Flüssigkeitsgewicht im Verhältnis zum Gewicht der damit versehenen trockenen Ware) zu erreichen, die weit über denjenigen liegen, die sich bei mit Quetschwerken arbeitenden Vorrichtungen erzielen lassen, wenn diese noch einen einen gleichmäßigen Liniendruck ergebenden und das Durchrutschen der Warenbahn vermeidenden Preßdruck aufweist. In der zweiten Auftragsvorrichtung wird die zusätzliche Flüssigkeit nur angetragen, jedoch nicht gegen die in der ersten Auftragsvorrichtung aufgebrachte Flüssigkeitsmenge ausgetauscht. Es handelt sich also um eine reine Additionsimprägnierung.A two-stage application process and a corresponding system are known from DE 37 33 997. An essential feature of this type of two-stage fleet order is the ability to put more liquid on the train, i.e. To achieve moisture contents (liquid weight in relation to the weight of the dry goods provided with them) which are far above those which can be achieved with devices which work with squeezing devices, if these still have a uniform line pressure and prevent the web from slipping through the pressing pressure. The additional liquid is only applied in the second application device, but is not exchanged for the amount of liquid applied in the first application device. So it is a pure addition impregnation.

In der DE-OS 37 33 997 ist die Frage, wie eine so stark beladene Warenbahn im Dämpfer geführt werden soll, um ein Ablaufen bzw. Abtropfen der Flüssigkeit zu vermeiden, offengelassen.In DE-OS 37 33 997 the question of how such a heavily loaded material web is to be guided in the damper in order to prevent the liquid from draining or dripping is left open.

Der Erfindung liegt die Aufgabe zugrunde, eine Anlage, in welcher eine stark mit Behandlungsflotte beladene Warenbahn erzeugt wird, so auszugestalten, daß ein ordnungsgemäßer Behandlungsablauf im Dämpfer gesichert ist.The invention is based on the object of producing a system in which a material web heavily loaded with treatment liquor is produced, To be designed in such a way that a proper treatment process is ensured in the damper.

Diese Aufgabe wird durch die in Anspruch 1 wiedergegebene Erfindung gelöst.This object is achieved by the invention reproduced in claim 1.

Durch die in der Aufheizzone des Dämpfers erfolgende Führung der Bahn in horizontalen Schleifen wird ein Herunterlaufen der Flüssigkeit und die damit einhergehende Ungleichmäßigkeit der Flüssigkeitsbelegung der Warenbahn vermieden, wie es an den vertikalen Abschnitten der sonst üblichen Warenbahnführung im Dämpfer eintreten würde. Die reichlich aufgetragene Behandlungsflotte kann in der durch die Anzahl der horizontalen Schleifen gebildeten Verweilstrecke in die Bahn penetrieren. Ein wichtiges Moment der Erfindung besteht darin, daß die beim Zulaufen der Warenbahn auf eine Umlenkrolle auf der dieser zugewandten Seite der Warenbahn mitgeführte Flüssigkeit in den Zwickel zwischen der Warenbahn und dieser Umlenkrolle eingezogen und in die Warenbahn hineingedrückt wird. Dadurch werden die Vermischung etwa vorhandener mehrerer Behandlungsflotten und auch das Eindringen der Behandlungsflotten in die Warenbahn und die bis in die Tiefe der Warenbahn durchgreifende Wechselwirkung mit derselben gefördert. Die Aufheizzone hat also nicht nur eine Temperatursteigerungs-, sondern auch eine Durchdrängungs- und Reaktionsfunktion. Am Ende der durch die horizontalen Schleifen gebildeten Aufheizzone ist die zuletzt aufgetragene Behandlungsflotte in die Bahn eingedrängt worden und die Gefahr des zu lokalen Ungleichmäßigkeiten führenden Ablaufens oder Abtropfens nicht mehr so groß. Die weitere Bahnführung im Dämpfer kann daher im Prinzip in der üblichen Weise erfolgen, obwohl für bestimmte Behandlungen besondere Bahnführungen zu bevorzugen sind, wie noch erläutert wird.Due to the fact that the web is guided in horizontal loops in the damper's heating zone, the liquid runs down and the associated unevenness in the liquid occupancy of the material web is avoided, as would occur in the vertical sections of the otherwise usual material web guidance in the damper. The plentifully applied treatment liquor can penetrate into the web in the dwell section formed by the number of horizontal loops. An important aspect of the invention is that the liquid carried when the web runs towards a deflection roller on the side of the web facing this side is drawn into the gusset between the web and this deflection roller and pressed into the web. This promotes the mixing of possibly existing treatment fleets and also the penetration of the treatment fleets into the web and the interaction with the same that extends to the depth of the web. The heating zone therefore has not only a temperature increase function, but also a penetration and reaction function. At the end of the heating zone formed by the horizontal loops, the treatment liquor applied last has been pushed into the web and the risk of draining or dripping, which leads to local irregularities, is no longer so great. The further path guidance in the damper can therefore in principle take place in the usual way, although special path guidance is preferred for certain treatments, as will be explained.

Die Führung einer Warenbahn in horizontalen Schleifen ist für sich genommen aus der DE-AS 17 10 477 bekannt. Hierbei geht es aber um einen Breitveredlungsvorgang, nicht um der Aufheizzone eines die Ausbildung der Aufheizzone eines Dämpfers. Aus der DE-A 2908345 ist eine solche Führung auch in einem Dämpfer zu entnehmen, allerdings nicht als Einlaufzone und nicht im Zusammenhang mit einem Flüssigkeitsauftrag. Entsprechendes gilt für die US-A 4873846, wo praktisch die gesamte Führungsstrecke in dem Dämpfer in horizontalen Schleifen vorliegt.The management of a web in horizontal loops is known per se from DE-AS 17 10 477. However, this is about a wide finishing process, not about the heating zone of the formation of the heating zone of a damper. Such a guide can also be found in a damper from DE-A 2908345, but not as an inlet zone and not in connection with a liquid application. The same applies to US-A 4873846, where practically the entire guide path in the damper is in horizontal loops.

Bei der FL-A 1181404 durchläuft die Warenbahn in aufrechten Schlaufen einen Behälter mit einem großen Vorrat an Bleichflotte. Nach dem Passieren einer vertikalen Aufheizzone wird die Warenbahn in Falten in einer J-Box abgelegt, um dort zuverweilen, d.h. es sind weder eine Führung noch eine Dampfatmosphäre vorhanden.With the FL-A 1181404, the web runs in upright loops through a container with a large supply of bleaching liquor. After passing through a vertical heating zone, the web is placed in folds in a J-box in order to remain there, i.e. there is neither a guide nor a steam atmosphere.

Ebenso ist das Merkmal, nach einem Flüssigkeitsauftrag in einen Dämpfer einzufahren und die Warenbahn dort horizontal zu führen, für sich genommen der DE-AS 22 16 758 zu entnehmen. Hierbei erfolgt aber nur ein einstufiger und einseitiger Auftrag eines Bemusterungsmittels und ist die Bahn lediglich auf einer horizontalen Strecke, nicht aber in vielen übereinanderliegenden horizontalen Schleifen geführt.Likewise, the feature of retracting into a damper after a liquid application and guiding the web horizontally there can be found in DE-AS 22 16 758. Here, however, there is only a one-stage and one-sided application of a patterning agent and the web is only guided on a horizontal route, but not in many horizontal loops lying one above the other.

Die Weiterführung der Warenbahn in der Aufheizzone des Dämpfers ist an den Auftrag der Behandlungsflotten angepaßt. Die Warenbahn wird mit der Behandlungsflotte getränkt und abgequetscht, worauf von beiden Seiten ein Antrag einer weiteren Behandlungsflotte erfolgt, die also außen auf der Bahn sitzt und mit der schon in dieser vorhandenen Behandlungsflotte eine sehr hohe Gesamtfeuchte ergibt. In dem Dämpfer wird dafür gesorgt, daß die Behandlungsflotten sich vermischen und einwirken und gleichzeitig nicht an der Warenbahn herablaufen oder herabtropfen können.The continuation of the web in the heating zone of the steamer is adapted to the order of the treatment liquors. The material web is soaked and squeezed with the treatment liquor, whereupon an application is made from both sides to a further treatment liquor, which therefore sits on the outside of the web and with which the treatment liquor already present results in a very high total moisture. The damper ensures that the treatment liquors mix and act and at the same time cannot run down or drip down the web.

Die Umlenkrollen einer Gruppe sind vertikal übereinander angeordnet, wobei die Anordnung die Ausbildung des leichten Gefälles ermöglicht und außerdem eine geringe Bauhöhe ergibt bzw. in einer zur Verfügung stehenden Höhe des Dämpfers die Unterbringung vieler Umlenkrollen gestattet.The deflecting rollers of a group are arranged vertically one above the other, the arrangement allowing the formation of a slight slope and also resulting in a low overall height or in the available height of the damper for accommodating many deflecting rollers.

Die Umlenkrollenanordnung soll einen schmalen hohen Turm im Anfangsbereich des Dämpfers bilden, der bei dem durch Anspruch 2 charakterisierten geringem Raumbedarf eine recht erhebliche horizontale Verweilstrecke mit vielen Umlenkungen beinhaltet.The deflecting roller arrangement is intended to form a narrow, high tower in the initial region of the damper, which, with the small space requirement characterized by claim 2, includes a quite considerable horizontal dwell path with many deflections.

Der durch die Art der zweiten Auftragsvorrichtung beidem Verfahren bzw. der Anlage nach den Ansprüchen 2 bzw. 8 mögliche hohe Gesamt-Flottenauftrag von 100 bis 220 %, der durch die erfindungsgemäße Ausgestaltung der Aufheizzone des Dämpfers praktisch handhabbar wird, gestattet die Durchführung einer einstufigen NaOH/Peroxid-Bleiche, bei der NaOH und Peroxid in einer Behandlungsflotte mit entsprechend hoher Wasserbeweglichkeit aufgetragen werden. Eine dem Bleichvorgang vorgeschaltete Brühstufe kann dadurch in vielen Fällen eingespart werden. Dies gelingt durch die Kombination einer Vorwäsche in einer Flottenkufe mit kontrollierter Abquetschung, durch das Auftragen einer mehrkomponentigen Bleichflotte mit anschließendem Abstreifen auf eine gleichmäßige sehr hohe Endfeuchte und eines Dämpfers mit Aufheizzonen mit horizontalen Schleifen.The high total liquor application of 100 to 220% possible due to the nature of the second application device in both the method and the system according to claims 2 and 8, which is practically manageable due to the inventive design of the heating zone of the steamer, allows a single-stage NaOH to be carried out / Peroxide bleach, in which NaOH and peroxide are applied in a treatment liquor with a correspondingly high degree of water mobility. A brewing stage upstream of the bleaching process can be saved in many cases. This is achieved by combining a pre-wash in a liquor skid with controlled squeezing, by applying a multi-component bleaching liquor with subsequent wiping to a uniform, very high final moisture level and a damper with heating zones with horizontal loops.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung in Gestalt einer Bleichanlage schematisch dargestellt.

  • Fig. 1 zeigt eine Seitenansicht des von der Erfindung betroffenen Teils der Anlage;
  • Fig. 2 zeigt die wesentlichen Elemente der Auftragsvorrichtungen in vergrößertem Maßstab;
  • Fig. 3 zeigt einige der horizontalen Schleifen in der Aufheizzone des Dämpfers in vergrößertem Maßstab.
In the drawing, an embodiment of the invention is shown schematically in the form of a bleaching plant.
  • Fig. 1 shows a side view of the part of the system affected by the invention;
  • Fig. 2 shows the essential elements of the application devices on an enlarged scale;
  • Fig. 3 shows some of the horizontal loops in the heating zone of the damper on an enlarged scale.

Die ganz oder zum großen Teil aus Baumwollgewebe bestehende Warenbahn 10 trägt nach der Herstellung noch mit der Baumwolle eingebrachte Verunreinigungen wie Schalen, Wachse und Fette und außerdem die Schlichte. Diese unkontrolliert eingeschleppten Substanzen katalysieren bei einer Peroxidbleiche den Peroxidzerfall, so daß der Bleichprozeß destabilisiert wird. Es ist also notwendig, diese Substanzen vor dem eigentlichen Bleichprozeß möglichst durchgreifend zu entfernen.The fabric web 10, which consists entirely or largely of cotton fabric, bears impurities such as shells, waxes and fats and also the size, which are introduced with the cotton after production. These substances, which are brought in in an uncontrolled manner, catalyze peroxide decomposition in the case of peroxide bleaching, so that the bleaching process is destabilized. It is therefore necessary to remove these substances as thoroughly as possible before the actual bleaching process.

Aus diesem Grund durchläuft die Warenbahn 10 nach dem Abwickeln von der nicht dargestellten Rolle einen intensiven Waschprozeß bei hohen Temperaturen in mehreren Flottenkufen, von denen der Endbereich der letzten Flottenkufe 1 auf der linken Seite von Fig. 1 zu erkennen ist. Die Flottenkufe 1 bildet eine erste Auftragsvorrichtung, in der eine erste Behandlungsflotte in Gestalt der Waschflotte 2 auf die Warenbahn 10 aufgetragen wird.For this reason, the web 10, after unwinding from the roll, not shown, undergoes an intensive washing process at high temperatures in a plurality of liquor skids, of which the end region of the last liquor skid 1 can be seen on the left-hand side of FIG. 1. The fleet runner 1 forms a first application device in which one first treatment liquor in the form of the washing liquor 2 is applied to the web 10.

Die Warenbahn 10 wird nach dem Verlassen der Flottenkufe 1 in einem Quetschwerk 3 definiert und über die Breite gleichmäßig auf einen Restfeuchtegehalt von etwa 70 % abgequetscht. Im Bereich des Quetschwerks 3 beträgt die Temperatur der Warenbahn 10 noch etwa 95° C, wie aus der vergrößerten Darstellung der Fig. 2 ersichtlich ist.After leaving the fleet runner 1, the web 10 is defined in a squeezer 3 and squeezed evenly across the width to a residual moisture content of about 70%. In the area of the crushing unit 3, the temperature of the web 10 is still approximately 95 ° C., as can be seen from the enlarged illustration in FIG. 2.

Nach dem Verlassen des Quetschwerks 3 und dem Passieren einer der Steuerung der Vorzugsgeschwindigkeit der Warenbahn dienenden Tänzerwalzen- bzw. Pendelrollenanordnung 4 gelangt die Warenbahn 10 in eine zweite Auftragsvorrichtung 5 besonderer Bauart (Fig. 2), in deren Bereich sie über übereinander angeordnete Umlenkwalzen 6,7 in einem Abschnitt 10' vertikal von oben nach unten geführt ist. Die Warenbahn 10 durchläuft in dem Abschnitt 10' einen Spalt 8, der am unteren Ende eines aufrechten, schmalen, quer über die Bahnbreite reichenden, im Vertikalschnitt etwa V-förmigen Troges 9 gebildet ist. Die von oben nach unten sich einander annähernden Wandungen 11,12 weisen am unteren Ende horizontal quer über die Bahnbreite reichende Kammern 13,14 auf, in denen aufblasbare Schläuche 15,16 angeordnet sind, die von beiden Seiten gegen die Warenbahn 10 anliegen und den Spalt 8 nach unten verschließen, so daß die in dem Trog 9 bis zu einer relativ geringen Füllstandshöhe h von 20 bis 25 cm stehende zweite Behandlungsflotte 17 nicht nach unten durch den Spalt 8 ausströmen kann.After leaving the crushing unit 3 and passing through a dancer roller or pendulum roller arrangement 4 which serves to control the preferred speed of the material web, the material web 10 arrives in a second application device 5 of a special type (FIG. 2), in the area of which it is arranged above deflecting rollers 6 arranged one above the other. 7 is guided vertically from top to bottom in a section 10 '. In section 10 ', the web 10 passes through a gap 8 which is formed at the lower end of an upright, narrow trough 9 which extends approximately across the web width and is approximately V-shaped in vertical section. The walls 11, 12 approaching one another from top to bottom have, at the lower end, horizontally transverse chambers 13, 14 which extend across the width of the web and in which are arranged inflatable tubes 15, 16 which abut the web 10 from both sides and the gap 8 close down so that the second treatment liquor 17, which is in the trough 9 up to a relatively low filling level h of 20 to 25 cm, cannot flow down through the gap 8.

Die Warenbahn 10 tritt durch die Behandlungsflotte 17 von oben nach unten hindurch und wird durch die Schläuche 15,16 beidseitig abgestreift, so daß sie eine relativ große, gleichmäßig beidseitig angetragene Menge der Behandlungsflotte 17 zusätzlich zu der in der Bahn verbliebenen Restfeuchte der Behandlungsflotte 2 mitnimmt.The fabric web 10 passes through the treatment liquor 17 from top to bottom and is stripped on both sides by the hoses 15, 16, so that it takes along a relatively large, evenly applied amount of the treatment liquor 17 in addition to the residual moisture of the treatment liquor 2 remaining in the web .

Die Zufuhr der Behandlungsflotte in den Trog 9 geschieht durch eine Vielzahl über die Breite der Warenbahn 10 verteilter Bogenröhrchen 18, die aus gemeinsamen quer über die Bahnbreite reichenden Zuführrohren 19 gespeist werden und die Flüssigkeit auf Ablaufbleche 20 abgeben, von deren unterem Rand sie in den Trog 9 abläuft. Die Speisung der Zuführrohre 19 erfolgt über ein steuerbares Ventil 21 aus oberhalb der Auftragsvorrichtung 5 angeordneten Vorratsbehältern 22,23, die in dem Ausführungsbeispiel, in welchem also eine Bleichflotte aufgetragen wird, beispielsweise Natronlaugelösung und Peroxidlösung enthalten können. Das Verhältnis wird an den Ventilen 24,25 eingestellt.The treatment liquor is fed into the trough 9 by a large number of arc tubes 18 distributed over the width of the product web 10, which are fed from common supply tubes 19 extending across the web width and deliver the liquid to drain plates 20, from the lower edge of which they enter the trough 9 expires. The feed pipes 19 are fed via a controllable valve 21 from storage containers 22, 23 arranged above the application device 5, which can contain, for example, sodium hydroxide solution and peroxide solution in the exemplary embodiment in which a bleaching liquor is applied. The ratio is set on the valves 24, 25.

In dem Trog 9 befindet sich nur eine relativ geringe Flüssigkeitsmenge von insgesamt wenigen Litern, die nur für wenige Meter Bahnlänge reicht und nach Maßgabe des Verbrauchs ständig nachgesetzt wird. Die Komponenten der Behandlungsflotte 17 in den Vorratsbehältern 22,23 werden also erst unmittelbar vor dem Auftrag auf die Warenbahn 10 zusammengeführt und dann auch sogleich auf die Warenbahn 10 gebracht. Es kann in dem Trog 9 auch keine Verarmung der Flotte an Komponenten auftreten, weil die gesamte Flotte stets in wenigen Sekunden ausgetauscht ist. Dies sind Vorteile gegenüber einer Flottenkufe, in der einer Verarmung der Flotte durch die ständig ausgeschleppten Anteile nur mit viel Aufwand entgegengewirkt und insbesondere bei Bleichflotten durch das lange Beieinander unterschiedlicher Chemikalien eine teilweise Zersetzung z.B. des Peroxids nicht ausgeschlossen werden können.In the trough 9 there is only a relatively small amount of liquid of a total of a few liters, which only lasts for a few meters of web length and is constantly replenished in accordance with the consumption. The components of the treatment liquor 17 in the storage containers 22, 23 are therefore only brought together on the web 10 immediately before the order and then immediately brought to the web 10. There can also be no depletion of components in the trough 9 because the entire fleet is always replaced in a few seconds. These are advantages over a fleet runner, in which depletion of the fleet due to the constantly dragged-out portions can only be counteracted with a great deal of effort and, in particular in the case of bleaching liquors, due to the long time different chemicals have been in contact with each other, e.g. partial decomposition e.g. of the peroxide cannot be excluded.

Nach dem Verlassen der Auftragsvorrichtung 5 ist die Warenbahn durchgreifend mit der Restfeuchte der Behandlungsflotte 2 und außerdem auf beiden Seiten mit der zusätzlich angetragenen Menge der Behandlungsflotte 17 beladen. Es ergeben sich bei einem zusätzlichen Antrag von etwa 80 % Gesamtfeuchtewerte von etwa 150 %, die an der Grenze des Feuchtigkeitsaufnahmevermögens der Ware leigen. Die große Feuchtigkeitsmenge bildet ein ideales Flüssigkeitsangebot für den Ablauf des Bleichvorgangs, bedarf aber einer besonderen Behandlung in dem nachfolgenden Dämpfer 30, der eine turmartige Aufheizzone 26 aufweist, in die die Warenbahn 10 von unten einläuft. Die Aufheizzone umfaßt zwei Gruppen 27,28 von untereinander gleichen, einander parallelen, horizontalen, vertikal übereinander angeordneten Umlenkrollen 29, über die die Warenbahn 10 im Zickzack in im wesentlichen horizontalen Schleifen 40 von unten nach oben geführt ist. Der vertikale Abstand d zweier vertikal übereinander angeordneter Umlenkrollen 29 ist kleiner als der Durchmesser D einer Umlenkrolle 29. Ausserdem sind die Achsen der Umlenkrollen 29 einer Gruppe, z.B. 28, in der Höhe mittig zu den Achsen der Umlenkrollen 29 der jeweils anderen Gruppen, z.B. 27, angeordnet. Dadurch ergibt sich die in Fig. 3 dargestellte Warenbahnführung, bei der die geraden Warenbahnabschnitte 10" zwischen den Umlenkrollen 29 ein leichtes Gefälle aufweisen, welches in Fig. 3 durch die Winkel 31 angedeutet ist, der in dem dargestellten Ausführungsbeispiel 7° beträgt und etwa 5 bis 10° betragen kann. Vor den Umlenkrollen 29, auf die die Warenbahnabschnitte 10" zulaufen, bilden sich kleine Wülste 32 an Behandlungsflotte, die beim Umlauf um die dortige Umlenkrolle 29 in die Warenbahn 10 hineingedrückt werden, wodurch eine Penetrierung der ganzen Warenbahn mit der in der Auftragsvorrichtung 5 außen angetragenen Behandlungsflotte 17 stattfindet. Durch die ganz überwiegend im wesentlichen horizontale Warenbahführung in der Aufheizzone 26 werden ein Herablaufen der relativ großen Flottenmenge an der Warenbahn und Tropferscheinungen vermieden, die sonst zu Ungleichmäßigkeiten des Behandlungsausfalls führen können.After leaving the application device 5, the material web is fully loaded with the residual moisture of the treatment liquor 2 and also on both sides with the additionally applied amount of the treatment liquor 17. With an additional application of about 80% total moisture values of about 150%, which lie at the limit of the moisture absorption capacity of the goods. The large amount of moisture forms an ideal liquid supply for the course of the bleaching process, but requires special treatment in the subsequent steamer 30, which has a tower-like heating zone 26, into which the web 10 runs from below. The heating zone comprises two groups 27, 28 of mutually identical, parallel, horizontal, vertically one above the other deflection rollers 29, over which the web 10 is zigzag in essentially horizontal loops 40 from bottom to top. The vertical distance d between two vertically arranged deflection rollers 29 is smaller than the diameter D of a deflection roller 29. In addition, the axes of the deflection rollers 29 of one group, for example 28, are centered in height on the axes of the deflection rollers 29 of the other groups, for example 27 , arranged. This results in the web guide shown in FIG. 3, in which the straight web sections 10 ″ between the deflecting rollers 29 have a slight slope, which is indicated in FIG. 3 by the angle 31, which in the exemplary embodiment shown is 7 ° and about 5 can be up to 10 °. In front of the deflection rollers 29, to which the web sections 10 "run, small beads 32 of treatment liquor form, which are pressed into the web 10 during the circulation around the deflection roller 29 there, whereby penetration of the entire web with the in the application device 5 externally applied treatment liquor 17 takes place. Due to the predominantly essentially horizontal routing of goods in the heating zone 26, a running down of the relatively large amount of liquor on the web and dripping phenomena are avoided, which can otherwise lead to irregularities in the loss of treatment.

Nach dem Verlassen der Aufheizzone 26 tritt die Warenbahn 10 in den eigentlichen Dämpfer 33 ein. Über einen der Steuerung der Vorzugsgeschwindigkeit dienenden Kompensator 34 mit Tänzerwalze wird die Warenbahn 10 gewünschtenfalls über eine nicht dargestellte Verweilstrecke mit vertikalen Schleifen geführt. Dann oder sogleich nach der Aufheizzone 26 wird sie auf einer Transporteinrichtung 50 über eine Verweilstrecke in Falten horizontal transportiert. Sie gelangt an einen Tafler 35, der die Warenbahn 10 in gleichmäßigen Falten 36 auf der Oberseite einer umlaufenden Trommel 37 ablegt, die das Faltenpaket mitnimmt, geordnet wendet und auf einem von der Unterseite der Trommel 37 tangential abgehenden Horizontalförderer 38 ablegt, auf dem die Warenbahn 10 in Faltenlage die Verweilstrecke zurücklegt. Ein nachgiebig gespanntes Band 39 an der Seite der Trommel 37 verhindert das Herunterfallen des Faltenpakets. Am nicht dargestellten Ende des Horizontalförderers 38 wird das Faltenpaket wieder auseinandergezogen. Anschliessend erfolgt die Wäsche.After leaving the heating zone 26, the web 10 enters the actual damper 33. About one to control the preferred speed compensator 34 with dancer roller, the web 10 is, if desired, guided over a dwell path, not shown, with vertical loops. Then or immediately after the heating zone 26, it is transported horizontally on a transport device 50 over a dwell path in folds. It arrives at a table 35, which deposits the web 10 in uniform folds 36 on the top of a rotating drum 37, which takes the fold package with it, turns it in an orderly manner, and deposits it on a horizontal conveyor 38 tangentially departing from the bottom of the drum 37, on which the web 10 covers the dwell in the folded position. A resiliently tensioned band 39 on the side of the drum 37 prevents the fold package from falling down. At the end of the horizontal conveyor 38, not shown, the fold package is pulled apart again. The laundry is then carried out.

Claims (2)

  1. An apparatus for the continuous treatment of a textile web;
       having a first applicator having means (1) for impregnating the web (10) and a following squeeze roller device (3);
       having a second applicator (5) disposed closely after the first applicator (1, 3) as considered in the direction of movement of the web (10) and comprising means (9) for impregnating the web (10), the same being in contact on both its sides with just a very small liquor supply (17) topped up continuously in accordance with consumption;
       having scraping means (15, 16) which are disposed immediately after the second applicator (5) and in which the web (10) is adapted to be guided through a nip (8) extending transversely over web width and which is bounded on at least one side of the web (10) in a zone extending transversely thereover by a flexible wall which can be inflated against the web (10) by a fluid pressure medium which engages the web (10) sealingly;
       and having a steamer (30) following closely after the second applicator (5) as considered in the direction of movement of the web (10),
       characterised in that
       the steamer (30) is preceded by a tower heating zone (26) in which two groups (27, 28) of reversing or deflecting rollers (29) disposed vertically one above another are provided;
       the vertical spacing (d) between two rollers (29,29) of a group (27, 28) is less than roller diameter (D) and the axis of any roller (29) of one group is disposed as considered vertically centrally between the axes of the immediately adjacent rollers (29, 29) of the other group;
       and the web (10) is guided in a zig-zag between the rollers (29) in substantially horizontal loops (40) whose straight parts (10") have a slight inclination in the direction of movement of the web (10).
  2. An apparatus according to claim 1, characterised in that the tower heating zone (26) has a dimension of approximately 1 m in the horizontal direction of web movement.
EP91903319A 1990-02-26 1991-02-08 Continuous process for the treatment of textile fabric webs, and an installation for carrying out the process Expired - Lifetime EP0517713B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4005980A DE4005980A1 (en) 1990-02-26 1990-02-26 Continuous fabric wet treatment - gives horizontal zigzag fabric path through heating zone of steamer
DE4005980 1990-02-26

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EP0517713A1 EP0517713A1 (en) 1992-12-16
EP0517713B1 true EP0517713B1 (en) 1994-01-12

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EP91903319A Expired - Lifetime EP0517713B1 (en) 1990-02-26 1991-02-08 Continuous process for the treatment of textile fabric webs, and an installation for carrying out the process

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US (1) US5359743A (en)
EP (1) EP0517713B1 (en)
JP (1) JPH0672357B2 (en)
BR (1) BR9105853A (en)
DE (2) DE4005980A1 (en)
WO (1) WO1991013200A1 (en)

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Also Published As

Publication number Publication date
BR9105853A (en) 1992-07-21
US5359743A (en) 1994-11-01
DE4005980A1 (en) 1991-08-29
DE59100861D1 (en) 1994-02-24
WO1991013200A1 (en) 1991-09-05
EP0517713A1 (en) 1992-12-16
JPH0672357B2 (en) 1994-09-14
JPH05500837A (en) 1993-02-18

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