EP0908550B1 - Verfahren und Maschine zur Behandlung von strangförmigen Textilgut - Google Patents

Verfahren und Maschine zur Behandlung von strangförmigen Textilgut Download PDF

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Publication number
EP0908550B1
EP0908550B1 EP97830475A EP97830475A EP0908550B1 EP 0908550 B1 EP0908550 B1 EP 0908550B1 EP 97830475 A EP97830475 A EP 97830475A EP 97830475 A EP97830475 A EP 97830475A EP 0908550 B1 EP0908550 B1 EP 0908550B1
Authority
EP
European Patent Office
Prior art keywords
vat
fabric
vacuum
treatment
rope
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
EP97830475A
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English (en)
French (fr)
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EP0908550A1 (de
Inventor
Gianpietro Brazzoli
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Brazzoli SpA
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Brazzoli SpA
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Filing date
Publication date
Application filed by Brazzoli SpA filed Critical Brazzoli SpA
Priority to EP97830475A priority Critical patent/EP0908550B1/de
Priority to DE69705521T priority patent/DE69705521T2/de
Priority to BR9803359-0A priority patent/BR9803359A/pt
Publication of EP0908550A1 publication Critical patent/EP0908550A1/de
Application granted granted Critical
Publication of EP0908550B1 publication Critical patent/EP0908550B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06B3/28—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics propelled by, or with the aid of, jets of the treating material
    • 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
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/14—Containers, e.g. vats
    • D06B23/18—Sealing arrangements

Definitions

  • the present invention relates to a process and a machine for rope fabric treatment.
  • the process is of a type comprising all the features expressed in the preamble of claim 1.
  • the machine for treating rope fabrics is of a type comprising all the features expressed in the preamble of claim 5.
  • the fabric is loaded from bobbins around which it has been rolled and subsequently treated in appropriate machines while it constantly keeps the appearance of a well-flattened ribbon.
  • the machines are provided with one or more substantially ring-shaped treatment vats, in each of which, through a loading porthole a rope fabric is admitted that is a fabric in the form of a twisted ribbon which is usually raw, that is in the state in which it comes from the weaving mill.
  • the operator when loading of the fabric into a vat portion is over, joins the fabric ends by means of a seam so as to make it continuous in the form of a loop and he fits a small magnet into the junction region.
  • Said magnet at the end of treatment, through the use of an appropriate "seam-finding" detector enables the seam itself to be stopped exactly at the access porthole.
  • an appropriate discharge reel on which one end of the fabric can be engaged enables dragging of the fabric itself to the outside and storing of same into a collecting trolley.
  • Means for charging and evacuating the treatment bath into and from the vat enables a complete dyeing cycle to be carried out, which cycle consists of different steps involving preparation, scouring or bleaching, true dyeing and washing operations.
  • the rope fabric wound in a loop is caused to circulate within the treatment vat by the combined action of appropriate dragging means generally consisting of a powered drive reel and one or more hydraulic propelling devices.
  • Said propelling devices are part of circulation means for movement along the annular extension of the treatment bath vat and enable appropriate speed values (increasingly growing speeds, for example) of the bath and consequently the fabric to be achieved, depending on the desired type of treatment.
  • Processes can be conducted in the treatment vat both at atmospheric pressure with treatment bath temperatures approximately of 85-95°C and at a higher pressure than the atmespheric one, generally of 3 bars at most, the bath temperatures being approximately 140°C.
  • the washing step is required in order to remove the excess and unfixed dye from the fabric fibres and consists of successive cycles each of which is carried out by charging the machine with clean water, causing the fabric rope to circulate within the machine for a predetermined period of time and then evacuating the dirty water into appropriate collecting tanks.
  • the overall duration of the washing step is long and the related costs are high, due both to the prolonged washing times and the large consumptions of electric energy and additional chemical products possibly required for each washing cycle during which the water temperature can reach the above mentioned temperature values.
  • the technical task underlying the present invention is to devise a process and a machine for rope fabric treatment capable of substantially obviating the above mentioned drawbacks.
  • Another important aim of the invention is to devise a process and a machine capable of improving the true dyeing step by eliminating or at least reducing the oxidation processes during this step.
  • a further aim of the invention is to devise a process and a machine enabling the rope fabric to be discharged, after the final washing step, with a low moisture content, without resorting to squeezing or similar operations.
  • the process for rope fabric treatment in accordance with the invention first of all consists in loading a rope-wound fabric into a vat of substantially annular conformation and engaging the fabric end in a manner known per se so that said fabric takes a closed-loop configuration and is disposed partly internally of a vat portion and partly externally thereof, thereby being able to be wound on a powered reel provided for dragging said fabric loop along.
  • the rope fabric is submitted to a washing step made up of several treatment cycles each comprising charging of a treatment bath into the vat, which bath consists of clean water or optionally water added with appropriate chemical products, and evacuation of said treatment bath.
  • the vacuum to be created within the vat should not be lower than about 150 millibars, to enable boiling of most of the liquid still impregnating the fabric.
  • the formed steam as a result of the vacuum is then drawn out of the vat and condensed before being sent to a recovery tank.
  • the machine for treating rope fabrics in accordance with the invention is generally identified by reference numeral 1. It comprises one or more treatment vats 2 disposed side by side, each of them being substantially in the form of a ring and suitably sized from a mechanical point of view in order to withstand stresses caused both by the inner pressure and outer atmospheric pressure.
  • Vat 2 has a filler or porthole 3 for loading and unloading a loop-closed rope fabric 4.
  • the fabric loop 4 in addition to occupying a portion of vat 2, mainly a lower one, also extends externally of said vat, being wound on dragging means 5 consisting of a powered reel located at the outside and at the upper part of vat 2.
  • the powered reel 5 is held in a casing 6 from which two channels 6a and 6b extend for holding and enabling passage of the fabric 4 between the reel 5 and vat 2.
  • charging means for a treatment bath (not shown in the accompanying drawing) and evacuation means 7 comprised of a discharge pipe 7a and an automatic exhaust valve 7b.
  • the treatment bath is circulated within vat 2 by circulation means 8 consisting of a hydraulic circuit comprising a suction duct 9, a filter 10, a circulation pump 11, a heat exchanger 12 to be selectively activated as a heater and as a condenser, and a pair of admission pipes, i.e. a first pipe 13a and a second pipe 13b disposed in parallel and connected to channel 6b.
  • circulation means 8 consisting of a hydraulic circuit comprising a suction duct 9, a filter 10, a circulation pump 11, a heat exchanger 12 to be selectively activated as a heater and as a condenser, and a pair of admission pipes, i.e. a first pipe 13a and a second pipe 13b disposed in parallel and connected to channel 6b.
  • a first automatic shutoff valve 14 Provided downstream of the circulation pump 11 is a first automatic shutoff valve 14, whereas disposed in pipes 13a and 13b respectively is a second automatic shutoff and delivery-adjusting valve 15 and a third automatic shutoff and adjusting valve 15b.
  • device 16a is of a type adapted to obtain a moderate speed of the bath to push the fabric 4 delicately.
  • Device 16b enables a higher speed of the bath to be achieved so that the fabric can be dragged along at higher velocities.
  • One of the above mentioned devices may also be replaced by another device (not shown in the drawing) in which the nozzle through which the treatment bath passes is of a variable section to conform the liquid outlet speed to the type of fabric to be treated.
  • shutoff valves 15a and 15b By intervening on the shutoff valves 15a and 15b either of the two propelling devices 16a and 16b can be activated so that the most appropriate velocity of the treatment bath and fabric can be selected.
  • An unloading reel 17 is also provided at the vat 2 region where the porthole 3 is located, which reel has the function of dragging the fabric rope along from the machine inside to the outside, when treatment is over.
  • the machine of the invention comprises vacuum-creating means 18 to create a vacuum of a controlled amount in vat 2, which vacuum is adapted to enable quick evaporation (boiling) of the treatment bath which is still present in the fabric, subsequently to evacuation of the treatment cycle.
  • the vacuum-creating means 18 comprises a vacuum pump 19 disposed in a first drawing pipe 20 which fits in the hydraulic circuit 8 between the first valve 14 and the heat exchanger 12. Disposed upstream of the vacuum pump 19 is a fourth automatic shutoff valve 21.
  • a second drawing pipe 22, in which a fifth automatic shutoff valve 23 is located is inserted at an upper region of vat 2 and fits in the hydraulic circuit 8 downstream of the heat exchanger 12, taking into account, in respect of said exchanger, the travel direction of the liquid imposed by the circulation pump 11.
  • the heat exchanger 12 is connected to a heating circuit when the circulation pump 11 is activated, whereas it is connected to a cooling circuit to condense steam drawn out of vat 2, when the vacuum pump 19 is activated.
  • a liquid-gas separator adapted to collect the sucked bath and send it to a recovery tank.
  • valves 21 and 23 are disposed in a closed position so that the circuit in which said vacuum-creating means 18 is located is excluded.
  • valves 14, 15a and 15b are brought to a closed position, whereas valves 21 and 23 disposed in the drawing pipes 20 and 22 are opened.
  • the vacuum pump 19 is operated for a given time that will be determined by the typology of the fabric to be treated and the vacuum degree corresponding to the boiling temperature of the bath still present in the fabric.
  • the drawn out steam is condensed through heat exchanger 12, thus avoiding use of a vacuum pump having a great delivery and consequently a great absorbed power.
  • separator 24 carries out separation of possible gaseous components from the liquid phase and sends the latter to a recovery tank.
  • the invention achieves important advantages.
  • the increased efficiency of each washing cycle enables the number of said cycles to be reduced while keeping the quality of the achieved result unchanged.
  • the low moisture amount present in the fabric after the last washing cycle facilitates the subsequent treatment steps of the fabric itself, i.e. opening of the rope and optional impregnation with chemical products before drying.

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

Claims (8)

  1. Verfahren zur Behandlung von Seilgeflechten nach der Art bestehend mindestens in:
    Einbringen eines im Seil aufgewickeltes Geflecht (4) in ein im wesentlichen ringförmig ausgebildetes Becken (2); Ergreifen der Enden des Seilgeflechtes (4), derart, dass dasselbe eine Abwicklung im geschlossenen Ring aufweist, die mindestens einen Teil des Beckens (2) belegt;
    Umwälzen des Seilgeflechtes (4) innerhalb des Beckens (2) und Unterwerfung des Seilgeflechtes (4) mindestens einem Färbeschritt und einem nachfolgenden Waschschritt, wobei jeder Schritt mindestens einen Arbeitsgang umfasst, der durch die Füllung und Entleerung eines Behandlungsbades ins und vom Becken (2) gebildet wird;
    Erzeugung, vor dem Färbeschritt, eines Unterdrucks innerhalb des Beckens (2), um im wesentlichen den Entzug der im Becken selbst enthaltenen Luft zu erlauben,
    dadurch gekennzeichnet, dass es in der Einbringung von Schutzgasen oder Antioxydationsmitteln in das Becken besteht.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass es in der Erzeugung eines weiteren Unterdrucks innerhalb des Beckens (2) nach dem Auslauf mindestens des Waschvorganges, wobei der weitere Unterdruck mindestens einen Betrag besitzt, welcher der Siedetemperatur des noch im Seilgeflecht vorhandenen Waschbades entspricht, wobei die Siedetemperatur der Temperatur des Bades selbst entspricht, und in der Ausführung des Entzugs aus dem Becken (2) des mit dem weiteren Unterdruck gebildeten Dampfes besteht.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der aus dem Becken (2) entzogene Dampf einer Kondensation ausgesetzt wird.
  4. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Behandlungsbad bevorzugter Weise bei einer Temperatur mindestens gleich 54° C entleert wird und der Unterdruck einem Druckwert nicht oberhalb von 150 mbar absolut entspricht.
  5. Maschine zur Behandlung von Seilgeflechten, umfassend:
    mindestens ein im wesentlichen ringförmig ausgebildetes Behandlungsbecken (2);
    Mitnahmemittel (5) des Seilgeflechtes innerhalb des Behandlungsbeckens (2);
    Mittel (7) zum Füllen und Entleeren eines Behandlungsbades ins und vom Becken;
    Umwälzmittel (8) des Behandlungsbades innerhalb des Beckens;
    Mittel zur Erzeugung von Vakuum (18), um einen Unterdruck kontrollierten Betrages im Becken zu erzeugen,
    dadurch gekennzeichnet, dass sie Mittel zur Einbringung von Schutzgasen oder Antioxydationsmitteln umfasst.
  6. Maschine nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel zur Erzeugung des Vakuums (18) eine Vakuumpumpe (19) umfassen, und dadurch, dass zwischen dem Behandlungsbecken und der Vakuumpumpe ein Wärmetauscher (12) zwischengeschaltet ist, der mindestens als Kondensator des dem Becken entzogenen Dampfes wirkt.
  7. Maschine nach Anspruch 6, dadurch gekennzeichnet, dass die Umwälzmittel (8) des Behandlungsbades durch einen hydraulischen Kreislauf außerhalb des Beckens (2) festgelegt sind, der mindestens eine Umwälzpumpe (11) und einen Wärmetauscher (12) umfasst, wobei der Wärmetauscher wahlweise als Erhitzer des Behandlungsbades wirkt.
  8. Maschine nach Anspruch 6, dadurch gekennzeichnet, dass sie nach der Vakuumpumpe (19) eine Einrichtung (24) zur Abtrennung der Gasfase von der Flüssigkeitsfase umfasst.
EP97830475A 1997-09-26 1997-09-26 Verfahren und Maschine zur Behandlung von strangförmigen Textilgut Expired - Lifetime EP0908550B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97830475A EP0908550B1 (de) 1997-09-26 1997-09-26 Verfahren und Maschine zur Behandlung von strangförmigen Textilgut
DE69705521T DE69705521T2 (de) 1997-09-26 1997-09-26 Verfahren und Maschine zur Behandlung von strangförmigen Textilgut
BR9803359-0A BR9803359A (pt) 1997-09-26 1998-09-25 Processo e máquina para tratamento de tecido de corda.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97830475A EP0908550B1 (de) 1997-09-26 1997-09-26 Verfahren und Maschine zur Behandlung von strangförmigen Textilgut

Publications (2)

Publication Number Publication Date
EP0908550A1 EP0908550A1 (de) 1999-04-14
EP0908550B1 true EP0908550B1 (de) 2001-07-04

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ID=8230785

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Application Number Title Priority Date Filing Date
EP97830475A Expired - Lifetime EP0908550B1 (de) 1997-09-26 1997-09-26 Verfahren und Maschine zur Behandlung von strangförmigen Textilgut

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EP (1) EP0908550B1 (de)
BR (1) BR9803359A (de)
DE (1) DE69705521T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349374B4 (de) * 2003-10-21 2009-04-09 Then Maschinen (B.V.I.) Ltd., Road Town Nassbehandlungsmaschine für strangförmiges Textilgut
EP1835061B1 (de) * 2006-03-16 2009-12-02 Canlar Makina Sanayi ve Ticaret Ltd. Sti. Verfahren und Vorrichtung zur kombinierten Nass- und Trockenbehandlung von strangförmigen Textilartikeln
CN111826856A (zh) * 2020-08-10 2020-10-27 江阴月发印染机械有限公司 连续绳状染色水洗机及其操作方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323376A1 (de) * 1983-06-29 1985-01-03 Hoechst Ag, 6230 Frankfurt Verfahren zum nachbehandeln von strangfoermigem textilgut in duesenfaerbeapparaten
US5077851A (en) * 1989-02-27 1992-01-07 Guma Juan M Method and apparatus for treating corded fabrics
ES2024742A6 (es) * 1990-02-19 1992-03-01 Montagut Guma Juan Mejoras en el objeto de la patente principal n[ 8900692, por "procedimiento y aparato para tratar tejidos en cuerda".

Also Published As

Publication number Publication date
BR9803359A (pt) 1999-11-03
EP0908550A1 (de) 1999-04-14
DE69705521T2 (de) 2001-10-25
DE69705521D1 (de) 2001-08-09

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