EP0938603B1 - Verfahren und vorrichtung zur wärmebehandlung von textilien - Google Patents

Verfahren und vorrichtung zur wärmebehandlung von textilien Download PDF

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Publication number
EP0938603B1
EP0938603B1 EP97909531A EP97909531A EP0938603B1 EP 0938603 B1 EP0938603 B1 EP 0938603B1 EP 97909531 A EP97909531 A EP 97909531A EP 97909531 A EP97909531 A EP 97909531A EP 0938603 B1 EP0938603 B1 EP 0938603B1
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EP
European Patent Office
Prior art keywords
steamer
liquid
pump
vacuum
water
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
EP97909531A
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English (en)
French (fr)
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EP0938603A1 (de
Inventor
Freddy Wanger
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.)
Xorella AG
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Xorella AG
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Publication date
Application filed by Xorella AG filed Critical Xorella AG
Publication of EP0938603A1 publication Critical patent/EP0938603A1/de
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Publication of EP0938603B1 publication Critical patent/EP0938603B1/de
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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
    • D06B17/00—Storing of textile materials in association with the treatment of the materials by liquids, gases or vapours
    • D06B17/04—Storing of textile materials in association with the treatment of the materials by liquids, gases or vapours in wound form
    • 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
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/12—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through materials of definite length

Definitions

  • the present invention relates to a method of heat-treating textiles, in particular spun cops or bobbins, in a heated steamer connected to a water and/or chemical supply and a vacuum pump via valves, and also relates to apparatus for carrying out this method.
  • Texttiles means any structure made of raw textile materials and includes materials in both fibrous and sheet form.
  • Textiles can also be conditioned or finished by treatment in a steam phase, if necessary with the addition of chemicals.
  • Suitable steamers have been known for many years and substantially comprise a cylindrical boiler closable by a pivotable cover. Inside the steamer is a water bath which generates steam by means of a heating device and effects the appropriate heat treatment of the material introduced. To enable the steam to penetrate better the interior of the textiles, a vacuum is generated before the heating device for the water bath is switched on.
  • An object of the invention is to provide a method and apparatus which use less energy, permit better penetration of the material to be treated and, in addition, reduce the cycle times and the overall heat treatment. This problem has been solved by the technical features set out in claims 1 and 9.
  • a vacuum of at least 50 mbar is generated.
  • the method according to the invention produces an energy saving in the order of 12 kWh per cycle or 35 to 40 kWh per treatment. Furthermore, the water vapour pumped off during the formation of the vacuum does not have to be recondensed. The non-recondensed volume saved is approximately 20 litres per treatment cycle.
  • a further advantage consists in the simple and economic supply of chemicals and/or finishing additives which load the vacuum pump only slightly or not at all.
  • the heat treatment or the results achieved may be improved in a simple manner by repeating the second to sixth steps at least once.
  • the heat treatment can be optimised by successively increasing the temperatures of the steam phase from the first to at least one subsequent heat treatment.
  • a steam phase temperature of at least 350 K is established in a first cycle and at least 380 K in a further cycle.
  • Energy may additionally be saved by aeration and the overall treatment time further reduced as a result, ie before the end of the first heat treatment, in an intermediate step, the vacuum is interrupted and then built up again.
  • the water and/or chemicals are supplied from containers dimensioned in accordance with the volume of the liquid bath in the steamer and which, together with the steamer, form a closed system into which only lost liquid is fed back from outside, the lost liquid due to the residual moisture in the steamed material and the evacuation.
  • This permits recirculation of the liquids and/or chemicals and is therefore particularly economical and environmentally friendly.
  • the invention further provides apparatus for carrying out the above method and comprising a heated steamer connected to a water and/or chemical supply and a vacuum pump via valves, wherein at least one container, a pump and at least two valves are provided for the liquid and/or chemical supply, the valves controlling the admission of liquid into and discharge of liquid from the steamer.
  • an electric heating device is provided at least within the space of a liquid bath within the steamer.
  • Such an electric heating device is particularly advantageous because it can be controlled very flexibly and thereby has a favourable effect.
  • Other heating systems for example steam heating systems, may also be used economically depending on the energy available.
  • the vacuum pump is a water-ring pump or a rotary vane pump.
  • a water-ring pump is very cost-effective and suitable for vacuums up to 30 mbar.
  • a rotary vane pump is necessary for vacuums up to 5 mbar.
  • an exhaust line is designated by the reference numeral 1.
  • a vacuum pump 2 with an electric motor M is connected to the exhaust line 1.
  • a vacuum line 3 is connected to the input side of the vacuum pump 2 (a rotary vane pump) and communicates with the interior of a steamer 6 via a valve V1 and a suction line 4.
  • a further valve V2 is also arranged in the suction line 4 and is connected to an air line 5.
  • a liquid bath 8, the aqueous liquid 9 of which can reach a level N1, and an electric heating device 10 are arranged inside the steamer 6 known per se.
  • the steamer 6 is provided with a pivotable cover 7 having a vertical pivoting axis 7a.
  • the material G to be treated is introduced into the steamer 6, where it is steam-treated, by opening the cover 7.
  • Feed lines 11 lead from the electric heating device 10 to a control unit, the regulating function of which is represented by +/-.
  • a liquid line 12 leads from the steamer 6 and is connected to pump lines 13 and supply lines 22.
  • the pump line 13 leads to valves V7, V8, and V9 via a valve V3, a liquid pump 14 with an electric motor M and pressure lines 15.
  • the valves V7 - V9 are for their part connected to the lower parts of liquid containers 19 - 21 via inlet/outlet lines 16 - 18.
  • Each of these liquid containers (tanks) has an aeration line 19' - 21', respectively.
  • Valves V4 - V6 are also arranged on the inlet/outlet lines 16 - 18 and are connected to the supply lines 22.
  • Fig. 1 The operation of the arrangement according to Fig. 1 is relatively simple: the interior of the steamer 6 is evacuated to the desired low pressure via the vacuum lines 3 and 1 by closing the valve V2, opening the valve V1, and switching on the vacuum pump 2. As a result, the material G to be treated also becomes substantially free of entrapped air.
  • valve V4 on the water tank 19 is now opened; the valve V9 remains closed so that water is sucked via the supply line 22 and the liquid line 12 into the steamer, where it fills the liquid bath 8 to the level N1.
  • the valve V4 is then closed and the electric heating device 10 is simultaneously activated by switching on the mains voltage, with the result that a steam phase forms inside the steamer 6 and penetrates the material G as saturated steam.
  • the control unit switches the heating device 10 off, the valves V3 and V9 are opened, the valve V4 remains closed and the liquid pump 14 is switched on; the water is pumped back into the water tank 19 and returns to approximately the level N2. The resultant displaced air can escape via the aeration line 19'.
  • the acids or bases are fed from the chemical tank 20 into the steamer 6 and then pumped back again.
  • a further advantage of this arrangement is the connection to the liquid-wax tank 21 after the last steaming process in order to facilitate processing of the material G, namely spun yarn in the form of cops.
  • Figs. 2 and 3 show the characteristics of a heat treatment for cops carried out in practice, starting from an ambient pressure of 1000 mbar. For graphical reasons, low pressures have been shown in abbreviated form in Fig. 3.
  • the steamer 6 is evacuated to a pressure of 5 mbar, after which water from the water tank 19 is admitted and heated, producing a steam phase having a temperature of approximately 350 K held constant for 2.0 minutes; cf. Fig. 2. During this process, the pressure in the steamer 6 is raised to approximately 420 mbar.
  • the vacuum is then interrupted and a residual quantity of steam is released via the suction line 4 and the valve V2 into the air (aeration); cf. Fig. 1.
  • a vacuum of 5 mbar is subsequently regenerated and a second treatment cycle begins.
  • the temperature of the steam phase is increased to 380 K, the pressure being raised to a positive pressure of 1300 mbar during the heating of the liquid supplied from the chemical tank 20.
  • the first cycle 1.C begins after the first evacuation process 1.v and lasts 3.0 minutes; the second and third cycles 2.C and 3.C each have a durationd of 4.0 minutes.
  • the whole heat treatment is finished after the fourth evacuation process 4.V, during which the residual moisture is removed from the material.
  • the material in question is a spun cotton yarn; the cops have a net weight of 120 g.
  • a steam condenser is additionally connected upstream of the vacuum pump 2.
  • the process may also be carried out under vacuum with a pressure above 50 mbar.
  • the process time is increased and the quality of treatment is reduced, especially when the material is heavy and/or compressed.

Landscapes

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

Claims (11)

  1. Verfahren zur Wärmebehandlung von Textilien (G) in einem beheiztem Dämpfer (6), welcher über Ventile (V4
    V9) und einer Pumpe (14), mit einem Ventil (V3) mit einer Wasser- und/oder Chemikalienversorgung (19 - 21) und über Ventile (V1, V2) mit einer Vakuumpumpe (2) verbunden ist, wobei:
    in einem ersten Schritt der Dämpfer (6) mit dem zu behandelnden Material (G) beladen wird, gefolgt von mehreren Folgeschritten mit Evakuieren der Luft, aussetzen des Textilien (G) während vorbestimmter Zeit in einer Dampfphase, abkühlen, trocknen, wieder evakuieren und am Ende herausnehmen der Textilien (G) aus dem Dämpfer (6), dadurch gekennzeichnet, dass:
    in einem zweiten Schritt die Vakuumpumpe (2) solange eingeschaltet wird, bis im Dämpfer (6) ein absoluter Druck von mindestens 100 mbar erreicht wird,
    in einem dritten Schritt ein Speiseventil (V7 - V9) der Wasser- und/oder Chemikalien-Versorgung (19 - 21) geöffnet wird und eine vorbestimmte Flüssigkeitsmenge in den Dämpfer geleitet wird um ein Flüssigkeitsbad (9) zu bilden,
    in einem vierten Schritt das Flüssigkeitsbad (9) und die zu bildende Dampfphase durch ein eingebautes Heizelement (10) auf eine vorgegebene Temperatur erhitzt werden,
    das zu behandelnde Material (G) während einer vorbestimmter Zeit in der Sattdampfphase gehalten wird und danach die Flüssigkeit aus dem Dämpfer (6) in den Vorratsbehälter (19 - 21) zurück gepumpt wird,
    in einem fünften Schritt die Vakuumpumpe (2) wieder aktiviert wird,
    in einem sechsten Schritt, nach vorgewählter Evakuierungs-, Abkühlungs- und Trocknungszeit, die Vakuumpumpe (2) ausgeschaltet wird und Umgebungsluft in den Dämpfer (6) eingelassen wird, und
    im letzten Schritt das Material (G) wieder aus dem Dämpfer (6) heraus genommen wird.
  2. Verfahren nach Anspruch 1, bei dem das im zweiten Schritt erzeugte Vakuum mindestens 50 mbar beträgt.
  3. Verfahren nach Anspruch 1 oder 2, bei dem die Schritte zwei bis sechs mindestens ein Mal wiederholt werden.
  4. Verfahren nach Anspruch 2 oder 3, bei dem die Temperaturen der Dampfphasen von der ersten zu mindestens einer nachfolgenden Wärmebehandlung erhöht werden.
  5. Verfahren nach Anspruch 4, bei dem die Dampftemperatur während der Wärmebehandlung im ersten Zyklus mindestens 350 K beträgt und mindestes 380 K in einem weiteren Zyklus.
  6. Verfahren nach Anspruch 4 oder 5, bei dem die Zeit mit konstanter Temperatur während dem ersten Behandlungszyklus kürzer ist als während den nachfolgenden Wärmebehandlungen.
  7. Verfahren nach einem der Ansprüche 4 bis 6, bei dem in einem Zwischenschritt vor dem Ende des ersten Behandlungszyklus das Vakuum unterbrochen und wieder aufgebaut wird.
  8. Verfahren nach einem der vorstehenden Ansprüche, bei dem Wasser und/oder Chemikalien aus entsprechend dem Volumen des zu bildenden Flüssigkeitsbades im Dämpfer dimensionierten Vorratsbehältern zugeführt werden, und die zusammen mit dem Dämpfer ein geschlossenes System bilden, welchem nur das durch die Restfeuchte des Materials und die evakuierte Dampfmenge verlorene Flüssigkeitsmenge von aussen wieder zugeführt werden.
  9. Vorrichtung zur Ausführung des Verfahrens nach einem der vorstehenden Ansprüche beinhaltend einen beheizten Dämpfer verbunden über Ventile mit einer Wasser und/oder Chemikalien-Versorgung und einer Vakuumpumpe, die mindestens einen Behälter, eine Pumpe und mindestens zwei Ventile für die Flüssigkeits- und/oder Chemikalien-Versorgung aufweist, wobei die Ventile die Ver- und Entsorgung der Flüssigkeit zum und vom Dämpfer regeln.
  10. Vorrichtung nach Anspruch 9, bei der ein elektrisches Heizelement eingebaut ist, das sich mindestens im Raum des Flüssigkeitsbades innerhalb des Dämpfers befindet.
  11. Vorrichtung nach Anspruch 9 oder 10, bei dem die Vakuumpumpe eine Wasserringpumpe oder eine Drehschieberpumpe ist.
EP97909531A 1996-11-14 1997-11-06 Verfahren und vorrichtung zur wärmebehandlung von textilien Expired - Lifetime EP0938603B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9623730 1996-11-14
GB9623730A GB2319263B (en) 1996-11-14 1996-11-14 A method and apparatus for the heat treatment of textiles
PCT/IB1997/001400 WO1998021390A1 (en) 1996-11-14 1997-11-06 A method and apparatus for the heat treatment of textiles

Publications (2)

Publication Number Publication Date
EP0938603A1 EP0938603A1 (de) 1999-09-01
EP0938603B1 true EP0938603B1 (de) 2005-07-20

Family

ID=10802955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97909531A Expired - Lifetime EP0938603B1 (de) 1996-11-14 1997-11-06 Verfahren und vorrichtung zur wärmebehandlung von textilien

Country Status (13)

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EP (1) EP0938603B1 (de)
JP (1) JP3856479B2 (de)
KR (1) KR100454847B1 (de)
CN (1) CN1082580C (de)
AT (1) ATE299962T1 (de)
AU (1) AU4719497A (de)
CZ (1) CZ296059B6 (de)
DE (1) DE69733765T2 (de)
ES (1) ES2246509T3 (de)
GB (1) GB2319263B (de)
HK (1) HK1023155A1 (de)
TR (1) TR199900975T2 (de)
WO (1) WO1998021390A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007024205A1 (de) 2007-05-24 2008-12-04 Xorella Ag Verfahren und Vorrichtung zur Wärmebehandlung von Textilgut
DE102008034840A1 (de) * 2008-07-24 2010-02-04 Xorella Ag Verfahren und Vorrichtung zum Befeuchten von Textilware

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100340242B1 (ko) * 2000-01-07 2002-06-12 이두현 직물 가열조의 밀폐장치
CN103510318A (zh) * 2013-09-12 2014-01-15 浙江新澳纺织股份有限公司 全羊毛纱线蒸纱方法
CN104278455B (zh) * 2014-09-28 2016-04-20 江苏今达纺织实业有限公司 真空式蒸丝定型设备的应用方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB910995A (en) * 1957-12-13 1962-11-21 Michael John Andrew Improvements in or relating to the dyeing and finishing of textiles
CN87203303U (zh) * 1987-05-23 1987-12-26 辽宁省农牧机械研究所 多功能真空洗衣机
CN2157938Y (zh) * 1993-06-17 1994-03-02 韩胜国 真空染色机

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007024205A1 (de) 2007-05-24 2008-12-04 Xorella Ag Verfahren und Vorrichtung zur Wärmebehandlung von Textilgut
DE102007024205B4 (de) * 2007-05-24 2015-01-08 Xorella Ag Verfahren und Vorrichtung zur Wärmebehandlung von Textilgut
DE102008034840A1 (de) * 2008-07-24 2010-02-04 Xorella Ag Verfahren und Vorrichtung zum Befeuchten von Textilware

Also Published As

Publication number Publication date
CN1238017A (zh) 1999-12-08
HK1023155A1 (en) 2000-09-01
CZ168499A3 (cs) 1999-08-11
WO1998021390A1 (en) 1998-05-22
DE69733765D1 (de) 2005-08-25
ATE299962T1 (de) 2005-08-15
JP2001504168A (ja) 2001-03-27
KR100454847B1 (ko) 2004-11-03
GB9623730D0 (en) 1997-01-08
KR20000053283A (ko) 2000-08-25
CN1082580C (zh) 2002-04-10
GB2319263B (en) 2000-11-15
AU4719497A (en) 1998-06-03
GB2319263A (en) 1998-05-20
DE69733765T2 (de) 2006-06-01
EP0938603A1 (de) 1999-09-01
JP3856479B2 (ja) 2006-12-13
ES2246509T3 (es) 2006-02-16
TR199900975T2 (xx) 1999-09-21
CZ296059B6 (cs) 2006-01-11

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