EP0198793B1 - Method and apparatus for mercerising fabrics - Google Patents

Method and apparatus for mercerising fabrics Download PDF

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Publication number
EP0198793B1
EP0198793B1 EP86810127A EP86810127A EP0198793B1 EP 0198793 B1 EP0198793 B1 EP 0198793B1 EP 86810127 A EP86810127 A EP 86810127A EP 86810127 A EP86810127 A EP 86810127A EP 0198793 B1 EP0198793 B1 EP 0198793B1
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Prior art keywords
web
zone
hot
fabric
lye
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German (de)
French (fr)
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EP0198793A1 (en
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Hans Weber
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Benninger AG Maschinenfabrik
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Benninger AG Maschinenfabrik
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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
    • D06B7/00—Mercerising, e.g. lustring by mercerising
    • D06B7/08—Mercerising, e.g. lustring by mercerising of fabrics of indefinite length

Definitions

  • the invention relates to a method for mercerizing textile webs according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 6.
  • Mercerizing methods have long been known in a wide variety of variants. With such methods, various effects such as e.g. B. increase in gloss, increased dye affinity and in particular dimensional stability. Modern mercerising machines should produce the desired effects based on business considerations with the shortest possible throughput times and minimal expenditure on equipment.
  • a mercerization process has become known, in which the textile fabric is immersed in a hot-water bath after a heat pretreatment for a relatively short dwell time on cylindrical rollers with bound product flow. The lye then acts on the fabric during a dwell time, during which the fabric is passed over cylindrical rollers without contact with the liquor. This is followed by cooling and spreading.
  • a similar method has become known from DE-A-2 405 006, in which the textile material is also only briefly immersed in a hot-water bath. After the hot suds bath, however, the textile goods are passed through a dwelling zone, in which they are again subjected to lye. In addition, the circulation of goods in the dwell section is not permanently bound, but interrupted. The textile is only cooled and then stretched after it has passed the dwell zone.
  • a mercerization process has become known from US Pat. No. 1,577,393, in which the fabric web is fed from a hot liquor bath of approximately 100 ° C. in an unbound web guide to a cooling zone, where it cools down to approximately 5 to 10 ° C. After the cooling zone, the fabric web also passes through a hot water tank in an unbound web guide and then various cold water tanks in which the fabric web is washed out. The fabric is stretched in width on pairs of spreader rolls, which are arranged after the hot water tank at the transition points to the individual cold water tanks. The result of the unbound web guide is that the width of the fabric changes very significantly, which then has to be recovered in the spreader zone. After heating or after stretching, there is no actual stabilization, but a washing-out process in unbound web guidance, which in turn allows the fabric to shrink in width.
  • a problem with known hot mercerization processes is that cooling requires a longer residence time and / or lower cooling temperatures. In the known generic methods, cooling was therefore carried out only immediately before stretching. Problems arose during spreading on the already cooled fabric. The result of this was tissue damage such as. B. edge tears etc. In addition, some of the mercerizing effects occur precisely during cooling, so that the relatively late cooling immediately before the drafting system also has disadvantages.
  • the object of the invention is to provide a method and a device of the type mentioned at the outset, with which optimal mercerizing effects can be achieved in tissue-friendly stretching by reducing the shrinkage forces before spreading.
  • this object is achieved with a method which has the features in the characterizing part of claim 1, and in terms of the device with a device which has the features in the characterizing part of claim 5.
  • the reheating of the fabric is carried out particularly advantageously by applying hot weak lye, the effect of which is still there can be optimized by applying it in the conical infeed field of a tenter to stretch the fabric.
  • a fabric web 1 is introduced into the device in the insertion zone A, with pre-heating of the fabric web z. B. is possible via heated rollers or by radiation.
  • a hot-water bath 2 which runs through the fabric in a bound manner.
  • sodium hydroxide solution or another alkali suitable for mercerization is used for impregnation.
  • the temperature of the lye in the hot lye bath can be 30 to 110 ° C, whereby the conventional lye temperature should also be taken into account.
  • An alkali concentration between 20 and 32 ° Be is aimed for.
  • the main work is with 20 or 30 ° Be.
  • the impregnation time is only a few seconds, for example 2 to 5 seconds.
  • the length of the web in the impregnation zone B is approximately 3 to 4 m. Due to this reduction of the impregnation zone to practically foulard ratios, the impregnation requires only small amounts of alkali, which are relatively easy to handle. The hot alkali is used for quicker impregnation without fiber swelling.
  • the fabric web 1 After passing through a pair of pinch rollers 3, the fabric web 1 reaches the cooling zone C from the hot liquor bath. There, cooling rolls 4 cool down to less than 25 ° C., preferably to about 20 ° C.
  • the length of the web in the cooling zone C is approximately 3 to 3.5 m and the residence time is approximately 2 to 5 seconds.
  • the material web After leaving the cooling zone C, the material web arrives in the dwell zone D, which essentially consists of deflecting rollers 5 arranged directly next to one another.
  • the dwell zone the fabric web is guided in a bound web guide without fleet contact.
  • the length of the track in the dwell area is approx. 9 to 10 m.
  • the fabric web shrinks continuously in the cooling zone C and in the retention zone D.
  • a clamping frame 6 with quotient regulation serves as the clamping device, with which the desired dimension in length and width can be preselected and maintained.
  • spray nozzles 8 are arranged, from which a hot medium such. B. hot weak liquor can be sprayed onto the fabric.
  • the application of hot weak lye results in a strong and gentle reduction of the shrinking forces in the fabric.
  • the fabric web arrives in a stabilizing and de-leaching zone F.
  • a stabilizing compartment 9 Connected to the tenter frame 6 is a stabilizing compartment 9, in which, in a manner known per se, the fabric web is guided on cylindrical rollers in a bound web guide through various chambers.
  • weak liquor is also supplied via the nozzles 8.
  • a countercurrent principle is sought, in which alkali of low concentration is applied to the rearmost fabric web sections in the direction of flow. The lye concentration thus increases against the direction of flow.
  • other drafting systems can of course also be used. However, using the tenter frame instead of a Mycock drafting system results in a uniform number of warp threads on the edge and in the middle of the fabric.
  • the fabric web 1 After leaving the stabilizing compartment, the fabric web 1 is fed to a washing machine (not shown), in which, in a manner known per se, lye residues still contained in the tissue are washed out.

Abstract

After leaving the hot lye bath (2) the fabric web (1) is immediately cooled down in a cooling zone (C) and only then passed to a residence zone (5) in which the lye acts on the fabric. Stretcing of the fabric web is then effected in a widthwise stretching zone (E), wherein it is again heated, preferably by a feed of hot weak lye. That combination of method steps provides optimum mercerizing effects with careful removal of shrinkage of the fabric.

Description

Die Erfindung betrifft ein Verfahren zum Mercerisieren von textilen Stoffbahnen gemäss dem Oberbegriff von Anspruch 1 sowie eine Vorrichtung zur Durchführung des Verfahrens gemäss dem Oberbegriff von Anspruch 6. Mercerisierverfahren sind bereits in den verschiedensten Varianten seit langem bekannt. Mit derartigen Verfahren werden an textilen Flächengebilden verschiedene Effekte wie z. B. Glanzerhöhung, erhöhte Farbstoffaffinität und insbesondere eine Dimensionsstabilität angestrebt. Moderne Mercerisiermaschinen sollten aus betriebswirtschaftlichen Ueberlegungen bei möglichst geringen Durchlaufzeiten und minimalem apparativem Aufwand die gewünschten Effekte erzeugen.The invention relates to a method for mercerizing textile webs according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 6. Mercerizing methods have long been known in a wide variety of variants. With such methods, various effects such as e.g. B. increase in gloss, increased dye affinity and in particular dimensional stability. Modern mercerising machines should produce the desired effects based on business considerations with the shortest possible throughput times and minimal expenditure on equipment.

Aus der DD-A-59 766 ist ein Mercerisierverfahren bekannt geworden, bei dem das textile Flächengebilde nach einer Hitzevorbehandlung während einer relativ kurzen Verweilzeit auf zylindrischen Walzen bei gebundenem Warenlauf in ein Heisslaugenbad getaucht wird. Die Lauge wirkt anschliessend während einer Verweilzeit auf das Gewebe ein, während der das Gewebe ohne Flottenberührung über zylindrische Walzen geführt wird. Danach erfolgt ein Abkühlen und Breitstrecken.From DD-A-59 766 a mercerization process has become known, in which the textile fabric is immersed in a hot-water bath after a heat pretreatment for a relatively short dwell time on cylindrical rollers with bound product flow. The lye then acts on the fabric during a dwell time, during which the fabric is passed over cylindrical rollers without contact with the liquor. This is followed by cooling and spreading.

Aus der DE-A-2 405 006 ist ein ähnliches Verfahren bekannt geworden, bei dem das Textilgut ebenfalls nur kurz in ein Heisslaugenbad eingetaucht wird. Nach dem Heisslaugenbad wird das Textilgut jedoch durch eine Verweilzone geführt, in der es erneut mit Lauge beaufschlagt wird. Ausserdem ist die Warenauflage in der Verweilstrecke nicht dauernd gebunden, sondern unterbrochen. Erst nach dem Passieren der Verweilzone wird das Textilgut gekühlt und anschliessend gestreckt.A similar method has become known from DE-A-2 405 006, in which the textile material is also only briefly immersed in a hot-water bath. After the hot suds bath, however, the textile goods are passed through a dwelling zone, in which they are again subjected to lye. In addition, the circulation of goods in the dwell section is not permanently bound, but interrupted. The textile is only cooled and then stretched after it has passed the dwell zone.

Durch die US-A-1 577 393 ist ein Mercerisierverfahren bekannt geworden, bei dem die Stoffbahn aus einem Heisslaugenbad von ca. 100 °C in ungebundener Bahnführung einer Kühlzone zugeführt wird, wo eine Abkühlung auf ca. 5 bis 10 °C erfolgt. Nach der Kühlzone durchläuft die Stoffbahn ebenfalls in ungebundener Bahnführung einen Heisswassertank und anschliessend verschiedene Kaltwassertanks, in denen ein Auswaschen der Stoffbahn stattfindet. Eine Breitenstreckung der Stoffbahn erfolgt an Breitstreck-Rollenpaaren, welche nach dem Heisswassertank an den Uebergangsstellen zu den einzelnen Kaltwassertanks angeordnet sind. Die ungebundene Bahnführung hat zur Folge, dass die Stoffbahn sich in ihrer Breite sehr stark verändert, was dann in der Breitstreckzone wiederum zurückgewonnen werden muss. Nach dem Erhitzen bzw. nach dem Breitstrecken erfolgt zudem keine eigentliche Stabilisierung, sondern ein Auswaschprozess in ungebundener Bahnführung, wobei das Gewebe wiederum in der Breite schrumpfen kann.A mercerization process has become known from US Pat. No. 1,577,393, in which the fabric web is fed from a hot liquor bath of approximately 100 ° C. in an unbound web guide to a cooling zone, where it cools down to approximately 5 to 10 ° C. After the cooling zone, the fabric web also passes through a hot water tank in an unbound web guide and then various cold water tanks in which the fabric web is washed out. The fabric is stretched in width on pairs of spreader rolls, which are arranged after the hot water tank at the transition points to the individual cold water tanks. The result of the unbound web guide is that the width of the fabric changes very significantly, which then has to be recovered in the spreader zone. After heating or after stretching, there is no actual stabilization, but a washing-out process in unbound web guidance, which in turn allows the fabric to shrink in width.

Ein Problem bei bekannten Heiss-Mercerisierverfahren besteht darin, dass die Abkühlung eine längere Verweilzeit und/odertiefere Kühltemperaturen erfordert. Bei den bekannten gattungsmässigen Verfahren erfolgte daher die Kühlung erst unmittelbar vor dem Strecken. Dabei traten beim Breitstrecken am bereits abgekühlten Gewebe Probleme auf. Die Folge davon waren Gewebebeschädigungen wie z. B. Kantenabrisse usw. Ausserdem tritt ein Teil der Mercerisiereffekte gerade beim Abkühlen ein, so dass das relativ späte Abkühlen unmittelbar vor dem Streckwerk ebenfalls Nachteile aufweist.A problem with known hot mercerization processes is that cooling requires a longer residence time and / or lower cooling temperatures. In the known generic methods, cooling was therefore carried out only immediately before stretching. Problems arose during spreading on the already cooled fabric. The result of this was tissue damage such as. B. edge tears etc. In addition, some of the mercerizing effects occur precisely during cooling, so that the relatively late cooling immediately before the drafting system also has disadvantages.

Die Aufgabe der Erfindung besteht darin, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, mit dem optimale Mercerisiereffekte bei gewebeschonendem Breitstrecken durch Abbau der Schrumpfkräfte vor dem Breitstrecken erzielt werden können. Diese Aufgabe wird in verfahrensmässiger Hinsicht mit einem Verfahren, das die Merkmale im Kennzeichen von Anspruch 1 aufweist, und in vorrichtungsmässiger Hinsicht mit einer Vorrichtung, welche die Merkmale im Kennzeichen von Anspruch 5 aufweist, gelöst.The object of the invention is to provide a method and a device of the type mentioned at the outset, with which optimal mercerizing effects can be achieved in tissue-friendly stretching by reducing the shrinkage forces before spreading. In terms of the method, this object is achieved with a method which has the features in the characterizing part of claim 1, and in terms of the device with a device which has the features in the characterizing part of claim 5.

Durch die sofortige Kühlung und den Transport der Stoffbahn in gebundener Bahnführung nach dem Heisslaugenbad hat sich trotz der Ueberwindung relativ grosser Temperaturdifferenzen überraschend herausgestellt, dass die Mercerisiereffekte wesentlich verbessert werden können. Das Gewebe ist bereits gekühlt, während es die Verweilzone passiert, so dass die Verweilzone bezüglich der Mercerisiereffekte optimal wirksam ist. Durch die Führung der Stoffbahn vom Heisslaugenbad bis zum Streckwerk auf zylindrischen Walzen bei gebundenem Bahnverlauf wird eine unkontrollierte und übermässige Gewebeschrumpfung vermieden. Das Führen über Kühlwalzen nach dem Imprägnieren ermöglicht eine sofortige Quellung der Ware. Dieses Verfahren erlaubt einen wesentlich vereinfachten apparativen Aufbau und erhöht die Flexibilität für den Einsatz verschiedener Laugenkonzentrationen und Laugentemperaturen gegenüber bekannten Verfahren. Durch die nachträgliche Wiedererhitzung der bereits abgekühlten Stoffbahn können die Schrumpfkräfte der gequollenen Baumwollfasern sehr stark abgebaut werden. Dies ermöglicht nicht nur ein schonendes Strecken der Stoffbahn, sondern auch grössere Breitengewinne. Durch die Kombination dieser an sich nicht naheliegenden Verfahrensschritte, nämlich das sofortige Abkühlen nach dem Heisslaugenbad und das spätere Wiedererhitzen der gekühlten Stoffbahn wird sowohl eine intensive Mercerisierung mit optimalen Effekten als auch eine schonende Streckung der Stoffbahn erreicht.As a result of the immediate cooling and the transport of the fabric web in a bound web guide to the hot-water bath, it has surprisingly been found, despite overcoming relatively large temperature differences, that the mercerizing effects can be significantly improved. The fabric is already cooled as it passes through the residence zone, so that the residence zone is optimally effective with regard to the mercerizing effects. Uncontrolled and excessive fabric shrinkage is avoided by guiding the fabric web from the hot-water bath to the drafting system on cylindrical rollers with a bound web path. Passing over cooling rollers after impregnation enables the goods to swell immediately. This method allows a significantly simplified apparatus structure and increases the flexibility for the use of different alkali concentrations and alkali temperatures compared to known methods. Due to the subsequent reheating of the already cooled fabric, the shrinking forces of the swollen cotton fibers can be greatly reduced. This not only enables gentle stretching of the fabric, but also greater width gains. The combination of these non-obvious process steps, namely the immediate cooling after the hot-water bath and the subsequent reheating of the cooled fabric, achieves both intensive mercerization with optimal effects and gentle stretching of the fabric.

Als besonders vorteilhaft hat es sich erwiesen, wenn die Stoffbahn in der Kühlzone auf 25 °C oder weniger abgekühlt wird.It has proven to be particularly advantageous if the fabric web is cooled to 25 ° C. or less in the cooling zone.

Die Wiedererhitzung der Stoffbahn erfolgt besonders vorteilhaft durch das Auftragen heisser Schwachlauge, wobei deren Wirkung noch dadurch optimiert werden kann, dass sie im konischen Einlauffeld eines Spannrahmens zum Strecken der Stoffbahn aufgetragen wird.The reheating of the fabric is carried out particularly advantageously by applying hot weak lye, the effect of which is still there can be optimized by applying it in the conical infeed field of a tenter to stretch the fabric.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachstehend genauer beschrieben. Es zeigen :

  • Figur 1 eine Seitenansicht einer erfindungsgemässen Mercerisiervorrichtung in stark vereinfachter Darstellungsweise, und
  • Figur 2 eine Draufsicht der Vorrichtung gemäss Figur 1.
An embodiment of the invention is shown in the drawings and will be described in more detail below. Show it :
  • 1 shows a side view of a mercerizing device according to the invention in a greatly simplified representation, and
  • FIG. 2 shows a top view of the device according to FIG. 1.

Eine Stoffbahn 1 wird in der Einführzone A in die Vorrichtung eingeführt, wobei in bestimmten Anwendungsfällen bereits eine Vorerwärmung der Stoffbahn z. B. über erhitzte Walzen oder durch Strahlung möglich ist. In der Imprägnierzone B ist ein Heisslaugenbad 2 angeordnet, welches die Stoffbahn in gebundener Warenführung durchläuft. Zum Imprägnieren dient beispielsweise Natronlauge oder eine andere zum Mercerisieren geeignete Lauge. Die Temperatur der Lauge im Heisslaugenbad kann 30 bis 110°C betragen, wobei die konventionelle Laugentemperatur ebenfalls mitberücksichtigt werden soll. Es wird eine Laugenkonzentration zwischen 20 und 32°Be angestrebt. Gearbeitet wird vorwiegend mit 20 oder 30°Be.A fabric web 1 is introduced into the device in the insertion zone A, with pre-heating of the fabric web z. B. is possible via heated rollers or by radiation. In the impregnation zone B there is a hot-water bath 2, which runs through the fabric in a bound manner. For example, sodium hydroxide solution or another alkali suitable for mercerization is used for impregnation. The temperature of the lye in the hot lye bath can be 30 to 110 ° C, whereby the conventional lye temperature should also be taken into account. An alkali concentration between 20 and 32 ° Be is aimed for. The main work is with 20 or 30 ° Be.

Die Imprägnierzeit beträgt nur wenige Sekunden, beispielsweise 2 bis 5 Sekunden. Die Bahnlänge in der Imprägnierzone B beträgt ca. 3 bis 4 m. Durch diese Reduktion der Imprägnierzone auf praktisch Foulard-Verhältnisse erfordert die Imprägnierung nur noch geringe Laugenmengen, die relativ einfach zu handhaben sind. Die heisse Lauge wird für eine raschere Imprägnierung ohne Faserquellung ausgenützt.The impregnation time is only a few seconds, for example 2 to 5 seconds. The length of the web in the impregnation zone B is approximately 3 to 4 m. Due to this reduction of the impregnation zone to practically foulard ratios, the impregnation requires only small amounts of alkali, which are relatively easy to handle. The hot alkali is used for quicker impregnation without fiber swelling.

Nach dem Passieren eines Quetschwaizenpaares 3 gelangt die Stoffbahn 1 vom Heisslaugenbad in die Kühlzone C. Dort erfolgt mittels Kühlwalzen 4 eine Abkühlung auf weniger als 25 °C, vorzugsweise auf etwa 20 °C. Die Bahnlänge in der Kühlzone C beträgt ca. 3 bis 3,5 m und die Verweilzeit ca. 2 bis 5 Sekunden.After passing through a pair of pinch rollers 3, the fabric web 1 reaches the cooling zone C from the hot liquor bath. There, cooling rolls 4 cool down to less than 25 ° C., preferably to about 20 ° C. The length of the web in the cooling zone C is approximately 3 to 3.5 m and the residence time is approximately 2 to 5 seconds.

Nach dem Verlassen der Kühlzone C gelangt die Stoffbahn in die Verweilzone D, die im wesentlichen aus unmittelbar nebeneinander angeordneten Umlenkwalzen 5 besteht. In der Verweilzone wird die Stoffbahn ohne Flottenkontakt in gebundener Bahnführung geführt. Die Bahnlänge im Verweilabteil beträgt ca. 9 bis 10 m. Wie insbesondere aus Figur 2 ersichtlich, erfolgt in der Kühlzone C und in der Verweilzone D eine dauernde Schrumpfung der Stoffbahn.After leaving the cooling zone C, the material web arrives in the dwell zone D, which essentially consists of deflecting rollers 5 arranged directly next to one another. In the dwell zone, the fabric web is guided in a bound web guide without fleet contact. The length of the track in the dwell area is approx. 9 to 10 m. As can be seen in particular from FIG. 2, the fabric web shrinks continuously in the cooling zone C and in the retention zone D.

Nach der Verweilzone D wird die Stoffbahn 1 der Breitstreckzone E zugeführt. Als Spannvorrichtung dient ein Spannrahmen 6 mit Quotientenregulierung, mit dem die gewünschte Dimension in Länge und Breite vorgewählt und eingehalten werden kann. Ueber dem Spannrahmen 6 sind Sprühdüsen 8 angeordnet, aus denen ein heisses Medium wie z. B. heisse Schwachlauge auf die Stoffbahn aufgesprüht werden kann. Insbesondere beim konischen Einlauffeld 7 ergibt das Aufbringen heisser Schwachlauge einen starken und schonenden Abbau der Schrumpfkräfte in der Stoffbahn.After the dwell zone D, the fabric web 1 is fed to the spreader zone E. A clamping frame 6 with quotient regulation serves as the clamping device, with which the desired dimension in length and width can be preselected and maintained. Above the clamping frame 6, spray nozzles 8 are arranged, from which a hot medium such. B. hot weak liquor can be sprayed onto the fabric. In the case of the conical inlet field 7 in particular, the application of hot weak lye results in a strong and gentle reduction of the shrinking forces in the fabric.

Nach der Breitstreckzone E gelangt die Stoffbahn in eine Stabilisier- und Entlaugungszone F. Diese beginnt bereits auf dem Spannrahmen 6, wo auch nach dem konischen Einlauffeld 7 über die Sprühdüsen 8 Schwachlauge aufgebracht wird. An den Spannrahmen 6 schliesst sich ein Stabilisierabteil 9 an, bei dem in an sich bekannter Weise die Stoffbahn auf zylindrischen Walzen in gebundener Bahnführung durch verschiedene Kammern geführt wird. Auch beim Stabilisierabteil 9 wird über die Düsen 8 noch Schwachlauge zugeführt. Beim Spannrahmen 6 und im Stabilisierabteil 9 wird ein Gegenstromprinzip angestrebt, bei dem Lauge niedriger Konzentration auf die in Durchlaufrichtung hintersten Stoffbahnabschnitte aufgebracht wird. Die Laugenkonzentration steigt somit gegen die Durchlaufrichtung. Anstelle des Spannrahmens 6 können selbstverständlich auch andere Streckwerke eingesetzt werden. Durch den Einsatz des Spannrahmens anstelle eines Mycock-Streckwerks ergibt sich jedoch eine gleichförmige Kettfadenzahl an der Kante und in der Mitte der Stoffbahn.After the spreader zone E, the fabric web arrives in a stabilizing and de-leaching zone F. This begins on the tenter frame 6, where weak liquor 8 is also applied after the conical inlet field 7 via the spray nozzles. Connected to the tenter frame 6 is a stabilizing compartment 9, in which, in a manner known per se, the fabric web is guided on cylindrical rollers in a bound web guide through various chambers. In the stabilizing compartment 9, weak liquor is also supplied via the nozzles 8. In the tenter frame 6 and in the stabilizing compartment 9, a countercurrent principle is sought, in which alkali of low concentration is applied to the rearmost fabric web sections in the direction of flow. The lye concentration thus increases against the direction of flow. Instead of the tensioning frame 6, other drafting systems can of course also be used. However, using the tenter frame instead of a Mycock drafting system results in a uniform number of warp threads on the edge and in the middle of the fabric.

Nach dem Verlassen des Stabilisierabteils wird die Stoffbahn 1 einer nicht dargestellten Waschmaschine zugeführt, bei der in an sich bekannter Weise ein Auswaschen von noch im Gewebe enthaltenen Laugenresten erfolgt.After leaving the stabilizing compartment, the fabric web 1 is fed to a washing machine (not shown), in which, in a manner known per se, lye residues still contained in the tissue are washed out.

Claims (7)

1. A method of mercerising a web of textile material (1) in which the web of material firstly passes through an impregnation zone (B) with a hot lye bath (2) and then a cooling zone (C) and in which after the impregnation operation shrinkage of the web of material (1) is eliminated with a stretching mechanism (6) characterised in that the web of material (1), downstream of the cooling zone (C), first passes through a residence zone (D), that the web of material is heated again after the residence zone and during or after the heating operation is stabilised by stretching and cleared of lye, wherein the web of material is guided from the hot lye bath (2) to the stretching mechanism (6) on cylindrical rolls in a controlled configuration.
2. A method according to claim 1 characterised in that the operation of heating the web of material is effected by applying hot weak lye.
3. A method according to claim 1 or claim 2 characterised in that the operation of stretching the web of material is effected on a tentering frame.
4. A method according to claim 3 characterised in that the operation of heating the web of material, in particular in the tapering entry area (7) of the tentering frame (8), in the width-wise stretching operation, simultaneously reduces tension.
5. A method according to claim 4 characterised in that downstream of the tentering frame (6) the web of material (1) passes in a controlled fashion on cylindrical rollers through a stabilising section (9).
6. Apparatus for mercerising a web of textile material comprising a hot lye bath (2) for the impregnation operation, a cooling zone (C) and a stretching mechanism for eliminating shrinkage after the impregnation operation, characterised in that it has a residence zone (D) which adjoins the cooling zone (C), comprising cylindrical rollers which are arranged in juxtaposed relationship, and that adjoining the residence zone (D) is a tentering frame (6) for width-wise stretching of the web of material.
7. Apparatus according to claim 6 characterised in that spray nozzles (8) for spraying a hot agent on to the web of material are arranged above the tapering entry area (7) of the tentering frame (6).
EP86810127A 1985-03-21 1986-03-14 Method and apparatus for mercerising fabrics Expired EP0198793B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1250/85 1985-03-21
CH1250/85A CH673746B5 (en) 1985-03-21 1985-03-21

Publications (2)

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EP0198793A1 EP0198793A1 (en) 1986-10-22
EP0198793B1 true EP0198793B1 (en) 1988-11-30

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EP86810127A Expired EP0198793B1 (en) 1985-03-21 1986-03-14 Method and apparatus for mercerising fabrics

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US (1) US4888840A (en)
EP (1) EP0198793B1 (en)
JP (1) JPS61266659A (en)
CH (1) CH673746B5 (en)
DE (1) DE3661323D1 (en)
ES (1) ES8703953A1 (en)

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CH675662GA3 (en) * 1986-10-03 1990-10-31 Piece goods mercerising - has separate lye preparation tank to reduce energy costs and environmental hazards
EP0305326B1 (en) 1987-08-26 1991-04-24 Benninger AG Method and apparatus for mercerizing a fabric
CH678199A5 (en) * 1988-02-11 1991-08-15 Benninger Ag Maschf
EP0335833B1 (en) * 1988-03-31 1993-07-28 Benninger AG Method and apparatus for stretching a fabric in width
DE58901667D1 (en) * 1988-04-29 1992-07-23 Benninger Ag Maschf METHOD AND DEVICE FOR WIDTH-WIDTHING A FABRIC WEB IN A MERCERIZING MACHINE.
US6908586B2 (en) * 2001-06-27 2005-06-21 Fusion Uv Systems, Inc. Free radical polymerization method having reduced premature termination, apparatus for performing the method and product formed thereby
US7140815B2 (en) * 2003-01-30 2006-11-28 Kennametal Inc. Drill for making flat bottom hole

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JPH0223624B2 (en) 1990-05-24
ES553246A0 (en) 1987-03-01
CH673746B5 (en) 1990-10-15
DE3661323D1 (en) 1989-01-05
US4888840A (en) 1989-12-26
ES8703953A1 (en) 1987-03-01
JPS61266659A (en) 1986-11-26
EP0198793A1 (en) 1986-10-22
CH673746GA3 (en) 1990-04-12

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