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EP0478921B1 - Method and apparatus for the continuous and intensive treatment of textile materials in sheet form - Google Patents

Method and apparatus for the continuous and intensive treatment of textile materials in sheet form Download PDF

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Publication number
EP0478921B1
EP0478921B1 EP91112729A EP91112729A EP0478921B1 EP 0478921 B1 EP0478921 B1 EP 0478921B1 EP 91112729 A EP91112729 A EP 91112729A EP 91112729 A EP91112729 A EP 91112729A EP 0478921 B1 EP0478921 B1 EP 0478921B1
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EP
European Patent Office
Prior art keywords
drum
wrapper
textile strip
wrappers
strip
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.)
Expired - Lifetime
Application number
EP91112729A
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German (de)
French (fr)
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EP0478921A1 (en
Inventor
Dieter Riedel
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.)
Johannes Menschner Maschinenfabrik GmbH and Co KG
Original Assignee
Johannes Menschner Maschinenfabrik GmbH and Co KG
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Publication of EP0478921A1 publication Critical patent/EP0478921A1/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
    • 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
    • D06B3/201—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 the treating material being forced through the textile material
    • D06B3/203—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 the treating material being forced through the textile material by suction, e.g. by means of perforated drums
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C2700/00—Finishing or decoration of textile materials, except for bleaching, dyeing, printing, mercerising, washing or fulling
    • D06C2700/13—Steaming or decatising of fabrics or yarns
    • D06C2700/135—Moistening of fabrics or yarns as a complementary treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S68/00—Textiles: fluid treating apparatus
    • Y10S68/903—Perforated drum and continuous textile feed and discharge

Definitions

  • the invention relates to a method and a device for the continuous intensive moistening of a textile web.
  • FR-A-1 389 015 describes a device for impregnating sheet material.
  • This device consists of a trough filled with a treatment liquid, in which a drum rotates.
  • the web-like material is guided by a permeable follower on the drum surface.
  • the impregnation of the material web is intensified by the fact that the treatment liquid is pressed back and forth through the material web.
  • pressure and vacuum cells are provided in the drum.
  • DE OS 28 08 949 describes a method for application. a treatment fleet known on a textile web.
  • an endless idler track provided with the treatment liquor and the textile web are pressed together on a contact section by means of an endless pressure track, so that part of the treatment liquor is transferred to the textile web. Outside the contact path, the idler track serving as an intermediate carrier is then loaded again with the required amount of treatment liquor.
  • the outer surface of a cylinder drum, on which the textile web and the idler are pressed through the pressure web, is preferably used as the contact path.
  • the contact pressure of the pressure track can be realized either by a tensile force applied in its longitudinal direction or by a negative pressure in the cylinder drum. In the latter case, the outer surface of the cylinder drum is perforated and the pressure path is impermeable to air.
  • a device for carrying out the method in which a second follower rests on the perforated drum jacket and a negative pressure is present inside the drum.
  • two airtight pressure tracks are provided, each spanning approximately half-sided drum sections.
  • the first follower serving as an intermediate carrier runs onto the cylinder drum between the first pressure belt and the second follower and delivers a certain amount of treatment liquor to the second follower on this contact path.
  • This arrives with the rotating drum in the area of the second pressure belt, the textile web to be treated running onto the drum between the second pressure belt and the second follower.
  • the second follower now releases part of the treatment fleet transferred from the first follower to the textile web.
  • a streak-free and intensively working humidifier that works continuously at a speed of at least 16 to 25 m / min. Goods transport speed that brings the required results does not yet exist.
  • the object of the invention is to demonstrate a method and an apparatus for carrying it out, with which continuous streak-free intensive moistening of the textile web to be treated can be carried out at a comparatively high speed thereof. This object is achieved by means of a method according to claim 1.
  • the tensioned idler is then heated with a hot, gaseous medium, e.g. Steam or hot air is applied.
  • a hot, gaseous medium e.g. Steam or hot air is applied.
  • the device for carrying out the method according to the invention has a cylindrical, rotatable drum which can be connected to a vacuum source and has a perforated lateral surface against which the one follower rests, the other follower being an endless pressure band which is under tension against the part of the textile web which wraps around the drum is present.
  • the follower formed as an endless printing belt is guided over deflecting rollers, of which at least one deflecting roller can be adjusted and locked to change the contact pressure, part of the deflecting rollers being drive rollers for the follower.
  • the drum is immersed in a container filled with water and holding a heating device.
  • the required moisture values (up to 35%) of the goods can be achieved without streaks.
  • the degree of moistening can also be influenced by other parameters, regardless of the speed of the goods. B. from the temperature of the water bath, the level of the water in the tank (immersion depth of the drum), the suction volume of the vacuum generator and the amount of steam.
  • Another advantage is that less pressing or finishing effects are lost in the goods due to the wetting under surface pressure than with wetting without surface pressure.
  • the goods under surface pressure are less transformed in the direction they are in, because fiber swelling and lumen increase are prevented.
  • the amount of activity offered is pressed into the core of the goods.
  • a permeable follower 2 bears against the jacket of the drum 1, which is a manchon in the embodiment shown. But the invention is on this particular embodiment is in no way limited.
  • the idler 2 can also be endless and can be guided over deflection rollers.
  • the textile web is indicated, which is pressed against the follower 2 by means of another, permeable follower 4 designed as an endless pressure band. This results in a frictional entrainment of the drum 1 and thus the textile web 3.
  • the contact pressure is generated by means of a gelable deflection roller 5.
  • One of the deflection rollers, namely 6, is the drive roller for the idler 4.
  • the material of the textile web 3 cannot swell, so that the moisture can penetrate into the core of the goods.
  • the level in the receptacle 7 and the temperature of the heating device 8 are expediently controllable.
  • the rotary movement of the drum 1 in the heated water bath results in a constant moistening of the two followers 2, 4 and thus inevitably also the textile web 3, the moistening of the follower 4 from the outside and that of the follower 2 from the inside of the drum 1 (wick system) .
  • the cocked follower 4 is with a hot, gaseous medium, for. B. steam or hot air. This is done via one or more steam boxes 9, which emit saturated steam or hot air, which is drawn into the drum 1 by the negative pressure through the two idlers 2, 4 and the textile web 3.
  • the steam and the pressurized textile web 3 already produce good moisture contact, which is further strengthened in the further course by sucking in hot moisture. In this way, the textile web 3 becomes more hygroscopic.
  • the degree of moistening can be influenced via the amount of suction and the strength of the negative pressure, especially if one assumes that the throughput speed of the textile web 3 is constant.
  • the humidification device according to the invention can be easily combined with downstream processing machines.
  • the driven roller 10 ensures that the textile web to be moistened is fed to the moistening device without tension.
  • a this roller 10 downstream dancer device 11 automatically controls the drive speed of the roller 10, so that always the same conditions and ultimately no goods train arises.
  • a dancer device 12 connected downstream of the moistening device takes over the synchronous control of the textile web 3 for the subsequent processing process.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren bzw. eine Vorrichtung zur kontinuierlichen Intensivbefeuchtung einer Textilbahn.The invention relates to a method and a device for the continuous intensive moistening of a textile web.

Es ist bekannt, daß bei der Verarbeitung von Wollwaren u. dgl. die Feuchtigkeit der Faser eine ausschlaggebende Rolle spielt. So verdanken beispielsweise englische Tuche ihren Weltruf im wesentlichen der Tatsache, daß die an die Wollfaser gebundene Feuchtigkeit etwas größer ist als bei den besten Tuchen deutscher bzw. italienischer Herkunft. Der Grund hierfür liegt in dem überwiegend feuchteren englischen Klima. Aber selbst dort werden durch zunehmende Rationalisierungsmaßnahmen und Produktionssteigerungen die Durchlaufzeiten für die Fertigung immer geringer, da die sonst üblichen Ruhepausen zur Klimatisierung der Wolle fortfallen. Die bereits seit langem eingeschalteten "künstlichen Erholungspausen", z.B. durch tungsmaßnahmen, bringen aber nur zu einem relativ geringen Anteil Erfolge. Die bis heute bekannten Befeuchtungsmethoden erfüllen die gestellten Aufgaben nur unvollkommen, weil die damit erzielte Zerstäubung des Wassers zu grob ist und folglich nur eine Nässung der Stoffoberfläche, keineswegs aber eine innige Verbindung der Feuchtigkeit mit der Wollfaser, insbesondere aber mit deren Kern, u. dgl. stattfindet.It is known that u. Like. The moisture of the fiber plays a crucial role. English fabrics, for example, owe their international reputation essentially to the fact that the moisture bound to the wool fiber is somewhat greater than that of the best fabrics of German or Italian origin. The reason for this is the predominantly wetter English climate. But even there, through increasing rationalization measures and production increases, the throughput times for production are getting shorter, because the otherwise usual breaks for air conditioning the wool are eliminated. However, the " artificial breaks" that have long been activated, for example through training measures, bring only a relatively small share of success. The humidification methods known to date only fulfill the tasks incompletely because the atomization of the water achieved is too coarse and consequently only a wetting of the material surface, but in no way an intimate connection of the moisture with the wool fiber, but especially with its core, u. Like. takes place.

Die auf dem Markt befindlichen Befeuchtungseinrichtungen arbeiten nach unterschiedlichen Methoden, z. B.:

  • 1.) Aufsprühen des Wassers mittels Düsen oder Rotoren:
    Die damit erzielbare Feuchtigkeitszunahme in der Ware ist begrenzt (8 - 12 %). Bei größeren Mengen (oft über 5 %) entstehen bereits ungleiche Effekte. An denjenigen Stellen, an welchen eine Überdeckung der Sprühstrahlen auftritt, werden Streifenbildungen auf der Ware sichtbar. Weitere Probleme entstehen immer wieder durch Kalkablagerungen in den Düsen oder Rotoren.
  • 2.) Luftbefeuchtungsgeräte:
    Diese Geräte, z. B. Nebelatoren o. dgl. bringen eine relativ gute Gleichmäßigkeit über die gesamte Warenbreite, wenn geeignete Maschinen mit gleichmäßigem Einsaugvermögen vorhanden sind, die die angebotene Feuchtigkeit durch die Ware hindurchsaugen. Die erzielbaren, effektiven Feuchtewerte sind jedoch auch hierbei relativ gering.
  • 3. ) Geräte zur Befeuchtung der Ware durch Auftragen eines Flüssigkeitsfilmes:
    Diese Geräte sind auch nur bedingt für Woll- oder Wollmischgewebe einsetzbar, weil durch Abriß des Flüssigkeitsfilmes immer wieder Unregelmäßigkeiten beim Pflatschen entstehen (Bilderungen, Flecken, Tropfen, Schlieren o. dgl.).
    Der richtige und und vor allem gleichmäßige Feuchtegehalt von Wollwaren o. dgl. ist aber ganz wichtig, ja sogar ausschlaggebend für Fixiervorgänge, insbesondere zur Erzielung von permanenten Fixiervorgängen im nassen (Flat-Setting Hydroflachfixierung) sowie im trockenen Zustand (Permenentdekatur). Bei der z. Zt. in der Praxis durchgeführten Hydroflachfixierung verarbeitet man das Fixiergut im nassen Zustand, d.h. nach dem Abquetschvorgang des Foulards o. dgl. bei einem Restfeuchtegehalt von von ca. 50-70%, je nach Qualität des Foulards o. dgl.
The humidifiers on the market work according to different methods, e.g. B .:
  • 1.) Spraying the water using nozzles or rotors:
    The achievable increase in moisture in the goods is limited (8 - 12%). Larger quantities (often over 5%) already produce uneven effects. In those places where the spray jets are covered, streaking on the goods becomes visible. Limescale deposits in the nozzles or rotors repeatedly cause further problems.
  • 2.) Humidifiers:
    These devices, e.g. B. Nebelatoren o. The like. Bring a relatively good uniformity over the entire width of the goods, if suitable machines are available with even suction that suck the moisture offered through the goods. However, the achievable, effective moisture values are also relatively low here.
  • 3.) Devices for moistening the goods by applying a liquid film:
    These devices can also only be used to a limited extent for wool or wool blended fabrics, because tearing off the liquid film repeatedly causes irregularities when splashing (formations, stains, drops, streaks or the like).
    However, the correct and, above all, uniform moisture content of woolen goods or the like is very important, even decisive for fixing processes, in particular to achieve permanent fixing processes in the wet (flat-setting hydroflat fixation) and in the dry state (Permenentdekatur). In the z. Hydroflat fixation, which is currently carried out in practice, is used to process the fixative in the wet state, that is to say after the padding process or the like has been squeezed off, with a residual moisture content of approximately 50-70%, depending on the quality of the paddle or the like.

In der FR-A-1 389 015 ist eine Vorrichtung zum Tränken von bahnförmigem Material beschrieben. Diese Vorrichtung besteht aus einem mit einer Behandlungsflüssigkeit gefüllten Trog, in dem eine Trommel umläuft. Das bahnförmige Material liegt beim Durchlaufen des Flüssigkeitsbades von einem durchlässigen Mitläufer geführt an der Trommeloberfläche an. Das Tränken der Materialbahn wird dadurch intensiviert, daß die Behandlungsflüssigkeit durch die Materialbahn hindurch hin- und hergedrückt wird. Dafür sind in der Trommel Druck- und Unterdruckzellen vorgesehen.FR-A-1 389 015 describes a device for impregnating sheet material. This device consists of a trough filled with a treatment liquid, in which a drum rotates. When passing through the liquid bath, the web-like material is guided by a permeable follower on the drum surface. The impregnation of the material web is intensified by the fact that the treatment liquid is pressed back and forth through the material web. For this purpose, pressure and vacuum cells are provided in the drum.

Derartige Tränkverfahren verursachen hohe Kosten, weil sehr viel Energie zum Trocknen benötigt wird, um die nasse Ware nach dem Fixieren wieder auf Normalfeuchte zu bringen. Wissenschaftliche Untersuchungen haben aber bereits schon vor einigen Jahren eindeutig gezeigt, daß man die besten Fixierwerte, z. B. bei Wollwaren, zwischen 25 und 35 % Feuchtigkeit erzielen kann. Solche Werte lassen sich jedoch - zumindest bis heute - in der Praxis nicht erreichen.Such impregnation processes cause high costs because a lot of energy is required for drying in order to bring the wet goods back to normal moisture after fixing. However, scientific studies have already clearly shown a few years ago that the best fixation values, e.g. B. woolen goods can achieve between 25 and 35% moisture. Such However, values - at least until today - cannot be achieved in practice.

Mit totaler Netzung im Wasserbad und anschließendem Abquetschvorgang können im Grenzfall ca. 5D % Feuchtegehalt realisiert werden. Andererseits bringt die Befeuchtung von trockener Ware im Maximum 10 - 12 %, wobei diese Werte lediglich als Momentanwerte angesehen werden müssen. Die Feuchtigkeit geht dabei nicht in die Tiefe der Faser und wird durch Verdunstung an die Umwelt - leider in der Regel noch ungleichmäßig - teilweise wieder abgegeben. Ungleiche Befeuchtungseffekte führen aber zu äquivalent ungleich verlaufenden Fixierffekten.With total wetting in a water bath and subsequent squeezing process, around 5D% moisture content can be achieved in the limit case. On the other hand, the humidification of dry goods brings a maximum of 10 - 12%, whereby these values only have to be regarded as instantaneous values. The moisture does not go into the depth of the fiber and is partly released again through evaporation to the environment - unfortunately usually still unevenly. However, unequal moistening effects lead to equivalently unequal fixing effects.

Aus DE OS 28 08 949 ist ein Verfahren zum Auftragen. einer Behandlungsflotte auf eine Textilbahn bekannt. Bei diesem Verfahren werden eine mit der Behandlungsflotte versehene endlose Mitläuferbahn und die Textilbahn auf einer Kontaktstrecke mittels einer endlosen Andrückbahn zusammengepreßt, so daß ein Teil der Behandlungsflotte auf die Textilbahn übertragen wird. Außerhalb der Kontaktstrecke wird dann die als Zwischenträger dienende Mitläuferbahn wieder mit der erforderlichen Menge an Behandlungsflotte beladen. Als Kontaktstrecke dient vorzugsweise die Mantelfläche einer Zylindertrommel, auf der die Textilbahn und der Mitläufer durch die Andrückbahn angepreßt geführt werden. Der Anpreßdruck der Andrückbahn kann entweder durch eine in deren Längsrichtung aufgebrachte Zugkraft oder aber durch einen Unterdruck in der Zylindertrommel realisiert werden. Im letzteren Fall ist die Mantelfläche der Zylindertrommel perforiert und die Andrückbahn luftundurchlässig.DE OS 28 08 949 describes a method for application. a treatment fleet known on a textile web. In this method, an endless idler track provided with the treatment liquor and the textile web are pressed together on a contact section by means of an endless pressure track, so that part of the treatment liquor is transferred to the textile web. Outside the contact path, the idler track serving as an intermediate carrier is then loaded again with the required amount of treatment liquor. The outer surface of a cylinder drum, on which the textile web and the idler are pressed through the pressure web, is preferably used as the contact path. The contact pressure of the pressure track can be realized either by a tensile force applied in its longitudinal direction or by a negative pressure in the cylinder drum. In the latter case, the outer surface of the cylinder drum is perforated and the pressure path is impermeable to air.

In einem Ausführungsbeispiel der DE-OS 28 08 949 wird eine Vorrichtung zur Durchführung des Verfahrens beschrieben, bei der ein zweiter Mitläufer auf dem perforierten Trommelmantel aufliegt und im Trommelinnern ein Unterdruck vorliegt. Hier sind zwei luftundurchlässige Andrückbahnen vorgesehen, die jeweils etwa halbseitige Trommelabschnitte umspannen. Im ersten Trommelabschnitt läuft der als Zwischenträger dienende erste Mitläufer zwischen dem ersten Andrückband und dem zweiten Mitläufer auf die Zylindertrommel auf und gibt auf dieser Kontaktstrecke eine bestimmte Menge an Behandlungsflotte an den zweiten Mitläufer ab. Dieser gelangt dann mit der umlaufenden Trommel in den Bereich des zweiten Andrückbandes, wobei die zu behandelnde Textilbahn zwischen dem zweiten Andrückband und dem zweiten Mitläufer auf die Trommel aufläuft. Der zweite Mitläufer gibt nun einen Teil der vom ersten Mitläufer übertragenen Behandlungsflotte an die Textilbahn ab.In one embodiment of DE-OS 28 08 949, a device for carrying out the method is described, in which a second follower rests on the perforated drum jacket and a negative pressure is present inside the drum. Here two airtight pressure tracks are provided, each spanning approximately half-sided drum sections. In the first drum section, the first follower serving as an intermediate carrier runs onto the cylinder drum between the first pressure belt and the second follower and delivers a certain amount of treatment liquor to the second follower on this contact path. This then arrives with the rotating drum in the area of the second pressure belt, the textile web to be treated running onto the drum between the second pressure belt and the second follower. The second follower now releases part of the treatment fleet transferred from the first follower to the textile web.

Eine streifenfreie und intensiv arbeitende Befeuchtungseinrichtung, die im kontinuierlichen Betrieb bei zumindest 16 bis 25 m/min. Warentransportgeschwindigkeit die geforderten Ergebnisse bringt, gibt es derzeit noch nicht.A streak-free and intensively working humidifier that works continuously at a speed of at least 16 to 25 m / min. Goods transport speed that brings the required results does not yet exist.

Hier setzt der Erfindungsgedanke ein. Aufgabe der Erfindung ist es, ein Verfahren sowie eine Vorrichtung zu dessen Durchführung aufzuzeigen, mit welchen eine kontinuierliche streifenfreie Intensivbefeuchtung der zu behandelnden Textilbahn bei vergleichsweise hoher Geschwindigkeit derselben durchführbar ist. Diese Aufgabe wird mittels eines Verfahrens gemäß Anspruch 1 gelöst.This is where the idea of the invention begins. The object of the invention is to demonstrate a method and an apparatus for carrying it out, with which continuous streak-free intensive moistening of the textile web to be treated can be carried out at a comparatively high speed thereof. This object is achieved by means of a method according to claim 1.

Dabei wird der gespannte Mitläufer mit einem heißen, gasförmigen Medium, z.B. Wasserdampf oder Heißluft beaufschlagt.The tensioned idler is then heated with a hot, gaseous medium, e.g. Steam or hot air is applied.

Die Vorrichtung zur Durchführung der erfindungsgemäßen Methode weist eine zylinderförmige, drehbare und an eine Vakuumquelle anschließbare Trommel mit perforierter Mantelfläche auf, gegen welche der eine Mitläufer anliegt, wobei der andere Mitläufer ein endloses Druckband ist, welches unter Zugspannung gegen den die Trommel umschlingenden Teil der Textilbahn anliegt.The device for carrying out the method according to the invention has a cylindrical, rotatable drum which can be connected to a vacuum source and has a perforated lateral surface against which the one follower rests, the other follower being an endless pressure band which is under tension against the part of the textile web which wraps around the drum is present.

Nach einem weiteren Merkmal der erfindungsgemäßen Vorrichtung ist der als endloses Druckband ausgebildete Mitläufer über Umlenkwalzen geführt, von welchen zur Veränderung der Anpreßkraft zumindest e i n e Umlenkwalze verstellbar und arretierbar ist, wobei ein Teil der Umlenkwalzen Antriebswalzen für den Mitläufer sind.According to a further feature of the device according to the invention, the follower formed as an endless printing belt is guided over deflecting rollers, of which at least one deflecting roller can be adjusted and locked to change the contact pressure, part of the deflecting rollers being drive rollers for the follower.

Die Trommel taucht dabei in einen mit Wasser gefüllten, eine Heizvorrichtung aufnehmenden Behälter ein.The drum is immersed in a container filled with water and holding a heating device.

Durch den erfindungsgemäßen Vorschlag können die geforderten Feuchtigkeitswerte (bis zu 35 %) der Ware streifenfrei verwirklicht werden. Darüber hinaus kann der Grad der Befeuchtung unabhängig von der Waren-Durchlaufgeschwindigkeit auch von weiteren Parametern beeinflußt werden, z. B. von der Temperatur des Wasserbades, dem Niveau des Wasserstandes im Behälter (Eintauchtiefe der Trommel), vom Einsaugvolumen des Unterdruckerzeugers sowie von der Dampfmenge.With the proposal according to the invention, the required moisture values (up to 35%) of the goods can be achieved without streaks. In addition, the degree of moistening can also be influenced by other parameters, regardless of the speed of the goods. B. from the temperature of the water bath, the level of the water in the tank (immersion depth of the drum), the suction volume of the vacuum generator and the amount of steam.

Ein weiterer Vorteil liegt darin, daß durch die Befeuchtung unter Flächendruck weniger Preß- oder Finisheffekte in der Ware verloren gehen als bei einer flächendrucklosen Befeuchtung. Die unter Flächenpressung stehende Ware wird weniger in Richtung zustand verwandelt, weil eine Faserquellung und lumenzunahme verhindert werden. Die angebotene tigkeitsmenge wird in den Kern der Ware gepreßt.Another advantage is that less pressing or finishing effects are lost in the goods due to the wetting under surface pressure than with wetting without surface pressure. The goods under surface pressure are less transformed in the direction they are in, because fiber swelling and lumen increase are prevented. The amount of activity offered is pressed into the core of the goods.

Weitere Merkmale der Erfindung gehen aus den Unteransprüchen, der nachfolgenden Beschreibung sowie der Zeichnung hervor. Die Zeichnung zeigt einen senkrechten Schnitt durch die Vorrichtung gemäß der Erfindung.Further features of the invention emerge from the subclaims, the following description and the drawing. The drawing shows a vertical section through the device according to the invention.

Mit 1 ist die zylinderförmige, drehbar gelagerte Trommel der Vorrichtung bezeichnet, deren Mantelfläche perforiert ist. Die Trommel 1 ist an eine nicht dargestellte Vakuumquelle, z. B. einen Ablüfter u. dgl. anschließbar. Gegen den Mantel der Trommel 1 legt sich ein durchlässiger Mitläufer 2 an, der bei der dargestellten Ausführungsform ein Manchon ist. Die Erfindung ist aber auf diese besondere Ausführungsform keineswegs beschränkt. Der Mitläufer 2 kann auch endlos ausgebildet und über Umlenkwalzen geführt werden.1 with the cylindrical, rotatably mounted drum of the device is designated, the outer surface of which is perforated. The drum 1 is connected to a vacuum source, not shown, e.g. B. a vent u. Like. Connectable. A permeable follower 2 bears against the jacket of the drum 1, which is a manchon in the embodiment shown. But the invention is on this particular embodiment is in no way limited. The idler 2 can also be endless and can be guided over deflection rollers.

Mit 3 ist die Textilbahn angedeutet, die gegen den Mitläufer 2 mittels eines weiteren, als endloses Druckband ausgebildeten, durchlässigen Mitläufers 4 angepreßt wird. Hierdurch ist eine kraftschlüssige Mitnahme der Trommel 1 und damit der Textilbahn 3 chergestellt. Der Anpreßdruck wird mittels einer gelbaren Umlenkwalze 5 erzeugt. Die eine der Umlenkwalzen, nämlich 6, ist Antriebswalze für den Mitläufer 4.With 3 the textile web is indicated, which is pressed against the follower 2 by means of another, permeable follower 4 designed as an endless pressure band. This results in a frictional entrainment of the drum 1 and thus the textile web 3. The contact pressure is generated by means of a gelable deflection roller 5. One of the deflection rollers, namely 6, is the drive roller for the idler 4.

Durch den von dem Mitläufer 4 ausgeübten Druck kann das Material der Textilbahn 3 nicht quellen, so daß die Feuchtigkeit in den Kern der Ware eindringen kann.Due to the pressure exerted by the follower 4, the material of the textile web 3 cannot swell, so that the moisture can penetrate into the core of the goods.

Als Folge der laufenden Evakuierung der Trommel 1 werden die Textilbahn 3 und die beiden Mitläufer 2, 4 im Umschlingungsbereich der Trommel 1 einer Unterdruckbehandlung unterworfen.As a result of the ongoing evacuation of the drum 1, the textile web 3 and the two followers 2, 4 are subjected to a vacuum treatment in the wrapping area of the drum 1.

Wie die Zeichnung deutlich macht, taucht die Trommel 1 mit der Textilbahn 3 sowie den beiden Mitläufern 2, 4 in einen mit der Befeuchtungsflüssigkeit, z. B. Wasser, gefüllten Behälter 7 ein, in welchem eine Heizvorrichtung 8 angeordnet ist. Das Niveau im Aufnahmebehälter 7 sowie die Temperatur der Heizvorrichtung 8 sind zweckmäßig regelbar. Durch die Drehbewegung der Trommel 1 im beheizten Wasserbad wird eine ständige Befeuchtung der beiden Mitläufer 2, 4 und damit zwangsläufig auch der Textilbahn 3 erreicht, wobei die Befeuchtung des Mitläufers 4 von außen und diejenige des Mitläufers 2 von innen der Trommel 1 erfolgt (Dochtsystem).As the drawing makes clear, the drum 1 with the textile web 3 and the two followers 2, 4 immersed in one with the dampening liquid, for. B. water, filled container 7, in which a heating device 8 is arranged. The level in the receptacle 7 and the temperature of the heating device 8 are expediently controllable. The rotary movement of the drum 1 in the heated water bath results in a constant moistening of the two followers 2, 4 and thus inevitably also the textile web 3, the moistening of the follower 4 from the outside and that of the follower 2 from the inside of the drum 1 (wick system) .

Der gespannte Mitläufer 4 wird mit einem heißen, gasförmigen Medium, z. B. Wasserdampf oder Heißluft beaufschlagt. Dies geschieht über einen oder mehrere Dämpfkästen 9, welche gesättigten Dampf oder Heißluft ausstoßen, der durch den Unterdruck durch die beiden Mitläufer 2, 4 und die Textilbahn 3 in die Trommel 1 eingezogen wird. Durch den Dampf und die unter Druck stehende Textilbahn 3 ist bereits ein guter Feuchtekontakt hergestellt, der im weiteren Verlaufe durch Einsaugen von heißer Feuchtigkeit noch verstärkt wird. Auf diese Weise wird die Textilbahn 3 hygroskopischer.The cocked follower 4 is with a hot, gaseous medium, for. B. steam or hot air. This is done via one or more steam boxes 9, which emit saturated steam or hot air, which is drawn into the drum 1 by the negative pressure through the two idlers 2, 4 and the textile web 3. The steam and the pressurized textile web 3 already produce good moisture contact, which is further strengthened in the further course by sucking in hot moisture. In this way, the textile web 3 becomes more hygroscopic.

Über die Einsaugmenge und die Stärke des Unterdruckes kann der Grad der Befeuchtung beeinflußt werden, namentlich, wenn man davon ausgeht, daß die Durchlaufgeschwindigkeit der Textilbahn 3 konstant ist.The degree of moistening can be influenced via the amount of suction and the strength of the negative pressure, especially if one assumes that the throughput speed of the textile web 3 is constant.

Die erfindungsgemäße Befeuchtungsvorrichtung läßt sich einfach mit nachgeschalteten Bearbeitungsmaschinen kombinieren. So sorgt beispielsweise die angetriebene Walze 10 dafür, daß die zu befeuchtende Textilbahn ohne Zug der Befeuchtungsvorrichtung zugeführt wird. Eine dieser Walze 10 nachgeschalteten Tänzereinrichtung 11 regelt automatisch die Antriebsgeschwindigkeit der Walze 10, so daß stets gleichhleibende Verhältnisse und letztlich kein Warenzug entsteht.The humidification device according to the invention can be easily combined with downstream processing machines. For example, the driven roller 10 ensures that the textile web to be moistened is fed to the moistening device without tension. A this roller 10 downstream dancer device 11 automatically controls the drive speed of the roller 10, so that always the same conditions and ultimately no goods train arises.

Eine der Befeuchtungsvorrichtung nachgeschaltete Tänzereinrichtung 12 übernimmt die Synchronregelung der Textilbahn 3 für den nachfolgenden Bearbeitungsprozeß.A dancer device 12 connected downstream of the moistening device takes over the synchronous control of the textile web 3 for the subsequent processing process.

Es wäre denkbar, Chemikalien zu applizieren, die - im Wasser gelöst - mit der Ware in Verbindung gebracht werden. In diesem Falle würden der Behandlungsflotte lediglich Chemikalien heigemischt werden.It would be conceivable to apply chemicals which - dissolved in water - are associated with the goods. In this case, the treatment fleet would only be mixed with chemicals.

Claims (12)

  1. Process for continuous intensive wetting of a textile strip (3), whereby this is wetted continuously by two permeable wrappers (2, 4) arranged on both sides of the strip, one of which (4) at least is applying pressure to the textile strip (3) by means of tension, and whereby the textile strip (3) and both wrappers (2, 3) are subjected to a vacuum.
  2. Process according to claim 1, characterized in that the tensioned wrapper (4) is acted upon by means of a hot gaseous medium, e.g. steam or hot air.
  3. Process according to claims 1 and 2, characterized in that the tension of at least one wrapper (4) is controllable.
  4. Process according to claims 1 to 3, characterized in that the vacuum and the temperature of the wetting agent are controllable.
  5. Apparatus for carrying out the method according to claims 1 to 4, characterized in that it contains a cylindrical, rotatable drum (1) with a perforated surface connectable to a vacuum source, against which one of the wrappers (2) is resting, and that the other wrapper (4) is an endless pressure belt resting under tensile stress against the part of the textile strip (3) wrapping around the drum (1).
  6. Apparatus according to claim 5, characterized in that one of the wrappers (2) is a manchon.
  7. Apparatus according to claims 1 to 6, characterized in that the wrapper (4) which is acting as an endless pressure belt is guided around guide rollers, one of said guide rollers (5) at least being adjustable and lockable for changing the contact pressure, and the other one (6) of the guide rollers being the drive roller for the wrapper (4).
  8. Apparatus according to claim 7, characterized in that the textile strip (3) is guided around a compensating device (11) controlling the speed of the drive roller (10).
  9. Apparatus according to claim 7, characterized in that a compensating device (12) is acting upon the textile strip (3) leaving the drum (1) whereby said compensating device is carrying out the synchronous control for the further procedure of the textile strip (3).
  10. Apparatus according to claims 1 to 9, characterized in that the drum (1) is immersing into a container (7) filled with a moistening fluid, e.g. water, and in which a heating apparatus (8) is located.
  11. Apparatus according to claim 10, characterized in that the water level in the container (7) and the temperature of the heating apparatus are controllable.
  12. Apparatus according to claims 1 to 11, characterized in that there is arranged at least one steam chamber (9) for acting upon the tensioned wrapper (4).
EP91112729A 1990-10-02 1991-07-29 Method and apparatus for the continuous and intensive treatment of textile materials in sheet form Expired - Lifetime EP0478921B1 (en)

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DE4031063 1990-10-02
DE4031063A DE4031063C2 (en) 1990-10-02 1990-10-02 Device for the continuous intensive moistening of a textile web

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EP0478921A1 EP0478921A1 (en) 1992-04-08
EP0478921B1 true EP0478921B1 (en) 1997-05-28

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DE4031063C2 (en) 1996-02-01
EP0478921A1 (en) 1992-04-08
US5203043A (en) 1993-04-20
DE4031063A1 (en) 1992-04-09
DE59108720D1 (en) 1997-07-03
JPH04272266A (en) 1992-09-29

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