EP0018047B1 - Procédé de blanchiment et de teinture de bobines de fil et installation pour sa mise en oeuvre - Google Patents

Procédé de blanchiment et de teinture de bobines de fil et installation pour sa mise en oeuvre Download PDF

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Publication number
EP0018047B1
EP0018047B1 EP80200341A EP80200341A EP0018047B1 EP 0018047 B1 EP0018047 B1 EP 0018047B1 EP 80200341 A EP80200341 A EP 80200341A EP 80200341 A EP80200341 A EP 80200341A EP 0018047 B1 EP0018047 B1 EP 0018047B1
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EP
European Patent Office
Prior art keywords
space
steam
valve
conduit
preparation tank
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
Application number
EP80200341A
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German (de)
English (en)
French (fr)
Other versions
EP0018047A1 (fr
Inventor
Lieven Jan Maurice Eduard Santens
Robert Medard Vander Beke
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.)
Centre Scientifique et Technique de lIndustrie Textile Belge CENTEXBEL
Santens Sprl
Original Assignee
Centre Scientifique et Technique de lIndustrie Textile Belge CENTEXBEL
Santens Sprl
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3865453&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0018047(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Centre Scientifique et Technique de lIndustrie Textile Belge CENTEXBEL, Santens Sprl filed Critical Centre Scientifique et Technique de lIndustrie Textile Belge CENTEXBEL
Publication of EP0018047A1 publication Critical patent/EP0018047A1/fr
Application granted granted Critical
Publication of EP0018047B1 publication Critical patent/EP0018047B1/fr
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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
    • 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
    • D06B5/16—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through materials of definite length through yarns, threads or filaments

Definitions

  • the present invention relates to a process for bleaching and dyeing spools of thread, according to which the spools of cold thread are impregnated with a treatment liquid in an autoclave, the liquid is removed from the autoclave and the steam coils in the autoclave.
  • the invention aims to evacuate the liquid from the autoclave, for example to reintroduce it into a preparation tank where it can be repackaged, in a simple and economical manner, without this liquid being heated.
  • the impregnation is carried out by leaving an air cushion above the liquid in the autoclave and the liquid is removed from the autoclave by introducing steam above the air cushion, l evacuation being interrupted when the steam reaches the liquid discharge outlet.
  • the steam treatment is regulated for a predetermined duration counted from the moment when a determined temperature is reached inside a coil.
  • the invention also relates to an installation for implementing the method determined above.
  • the invention aims to create an installation of this kind allowing in particular to reintroduce the autoclave bath in the preparation tank where it can be reconditioned.
  • the installation makes it possible to carry out this reintroduction by means of steam without the bath being heated.
  • the conduit connecting the lower part of the second space to the upper part of the preparation tank comprises a temperature measuring device controlling above d '' a predetermined temperature closing a valve interposed in this conduit.
  • the autoclave is provided with an air inlet but it is a heated air inlet in order to dry the coils and not a source of compressed air can create an overpressure in the autoclave.
  • the installation according to Belgian patent no. 742.314 also does not include any conduit connecting the lower part of the space outside the coils to the upper part of the preparation tank.
  • the known installation shown in FIG. 1 comprises an autoclave 1, an expansion tank 2 also used for adding liquid, a tank 3 used for the preparation of the bleaching solution, pumps 5 and 6, a heat exchanger 11 and various conduits and valves described below.
  • the autoclave shown less schematically in FIG. 2, is equipped with a material holder for coils 69. These coils determine inside the autoclave a first space 67 on the inside of the coils 69 and a second space 68 on the outside of the coils.
  • the first interior space 67 is essentially constituted by the central channels of the stacked coils.
  • the second external space 68 is constituted by all that surrounds the coils 69. As can be seen in FIG. 2, there is nowhere a direct communication between the internal space 67 and the external space 68. liquid can pass from the interior space 67 to the exterior space 68 or vice versa only through the coils 69.
  • a closed circuit is formed by the interior space 67, the conduits 7 and 8, the pump 5, the conduits 9 and 10, the exterior space 68 and the coils 69.
  • the pump 5 drives the liquid in the direction of the arrow 70, therefore in a direction such that through the coils 69 the liquid circulates from the interior space 67 to the exterior space 68.
  • the heat exchanger 11 is interposed in the duct 9.
  • the autoclave 1 is connected to the general evacuation conduit 13 by the aforementioned conduit 10 and by the emptying conduit 14 which comprises the valve 15.
  • the suction part of the pump 5 is connected not only to the duct 9, but also to the duct 29 which comprises the valve 30 and which is supplied by the pump 6 from the expansion tank 2 through the ducts 16 and 71.
  • a conduit 23 communicates with the upper part of the exterior space 68 of the autoclave 1 and passes through the bottom of this autoclave 1 without communicating with the interior space 67.
  • This conduit 23 is connected by the conduit 24 to the conduit 25 which comprises the valve 26 and opens into the expansion tank 2.
  • the liquid in the upper part of the external space 68 can therefore overflow through the conduits 23, 24 and 25, if the valve 26 is open, in the expansion tank 2, from which the liquid is sucked by the pump 6 and discharged through line 29, if valve 30 is open, in the circuit formed by pump 5, lines 8 and 7, autoclave 1 and lines 10 and 9.
  • conduit 16 is also connected to the general evacuation conduit 13 by the conduit 17 which includes the valve 18.
  • the conduit 25 is also connected by the conduit 27, comprising the safety valve 28, to the general evacuation conduit 13.
  • the autoclave 1 can therefore also overflow towards the general evacuation conduit 13 through the conduits 23, 24 and 27.
  • the upper part of the external space 68 is also connected to the general evacuation conduit 13 by the connector 63 and by the conduit 35 which comprises the valve 36.
  • the preparation reservoir 3 is supplied with water through the conduit 37 comprising the valve 38.
  • This reservoir 3 is connected to the general discharge conduit 13 by the conduit 19 comprising the valve 20.
  • the conduit 31 connects the conduit 19 on the one hand to conduits 9 and 29 on the other hand. It comprises a valve 32 and on the side of the conduits 9 and 29 with respect to this valve a supply conduit 33 comprising a valve 34.
  • FIG. 3 presents a series of complementary elements which are described below.
  • a vacuum pump is connected by a conduit 39, comprising a valve 40, to the connector 63 provided at the top of the autoclave 1.
  • the same connector 63 is connected by a conduit 41 comprising a valve 42 to an air source compressed
  • the autoclave is also provided with a level 48 regulator.
  • a source of steam supply feeds the conduit 43 which is connected by the conduit 44, comprising the valve 45, to the conduit 23 opening into the upper part of the external space 68 of the autoclave 1.
  • the conduit 46 comprising the valve 47, connects the conduit 43 supplied by the steam source to the conduit 7 opening into the interior space 67 of the autoclave 1.
  • Line 14 is connected between valve 15 and line 10 to a line 49 which opens into the upper part of the tank 3 used for the preparation of the bleaching solution.
  • the conduit 49 opens into the reservoir 3 at a point situated above the maximum level of the liquid in this reservoir.
  • the conduit 49 comprises a temperature measuring device 50.
  • This temperature measuring device 50 controls a valve 51 interposed in the conduit 49 and closes this valve when the measured temperature exceeds a predetermined value.
  • the temperature measuring device 50 is located between the valve 51 and the preparation tank 3. The valve 51 is therefore closed only when the predetermined temperature is already reached downstream of this valve in the direction of the tank 3.
  • Another temperature measuring device 66 measures the temperature inside a coil 69 and controls the activation of a timer when a predetermined temperature is reached, this timer closing the valve 45 and / or the valve. 47 after a predetermined period.
  • a valve 12 is interposed in the conduit 8 connecting the conduit 7 to the pump 5.
  • the valve 12 is normally open; all other valves are normally closed.
  • the conduit 64 comprising the valve 65, connects the conduit 8 between the conduit 7 and the valve 12 to the general evacuation conduit 13.
  • the conduit 52 serves, for example, to add a bleaching agent, for example hydrogen peroxide in the bath which is prepared and reconstituted in the reservoir 3; the flow rate of this agent can be adjusted by the metering pump 53 as a function of an automatic titration apparatus 72.
  • the conduit 54 serves, for example, to add an alkali to give or restore the appropriate pH to the bath. This alkali flow rate is adjusted by the metering pump 55 as a function of the pH measured by the pH meter 73.
  • the reservoir 3 is further provided with an agitator 56 and a level controller 57.
  • the installation according to FIG. 3 allows the implementation of certain new processes which require a shorter period for bleaching or for dyeing and / or are less expensive and / or give a better quality product.
  • a process which can be implemented with the installation according to FIG. 3 is a bleaching process also calling for steam treatment.
  • This process essentially includes an impregnation phase, a recovery phase combined with deaeration of the autoclave and a steam treatment phase, possibly followed by soaping and other finishing treatments.
  • a bleaching solution is prepared in the tank 3 at room temperature, which is in principle from 18 to 25 ° C.
  • This solution preferably comprises a wetting agent with limited dispersing effect and with anti-foaming effect.
  • the temperature of the order of 18 to 25 ° C of the bleaching solution which is also maintained when this solution is in autoclave 1, is preferred due to the fact that higher temperatures can cause thermal decomposition of the bleaching solution.
  • the wetting agent preferably has a limited dispersing effect due to the fact that the dispersion increases the risk of migration; the agent preferably has an anti-foaming effect to prevent the formation of foam during the steam treatment preventing rapid reheating of the coils.
  • an amount of 0.3 cc of wetting agent is used per liter of solution and this agent is for example based on ethereal sulfate of phosphoric acid with anti-foaming effect.
  • This bleaching solution is introduced into the autoclave 1 from the reservoir 3 by the opening of the valve 32 and the starting of the pump 5.
  • valve 32 When a sufficient quantity of solution is thus introduced into the autoclave 1, the valve 32 is closed. It is possible to work with different levels inside the autoclave, but it is necessary to maintain a cushion above the liquid. of air.
  • the level of the liquid in the autoclave 1 is such that the coils are completely submerged.
  • valve 26 is open, the pump 6 operates, the valve 30 is open and the pump 5 circulates through the conduits 10, 9, 8 and 7, in the direction of the arrow 70.
  • the pressure static inside the autoclave is carried out by pump 6.
  • the pump 5 causing circulation in the direction of the arrow 70, the bleaching solution passes through the coils 69 from the interior space 67 to the exterior space 68.
  • the coils 69 are partially immersed in the bleaching solution or are not immersed at all.
  • the level of the bleaching solution in the autoclave is determined by the level regulator 48.
  • the valve 42 is opened to bring the pressure inside the autoclave 1 to about 2 bars.
  • the pump 5 is started to circulate through the conduits 10, 9, 8 and 7 in the direction of the arrow 70 so that the solution passes through the coils 69 from the interior space 67 in the direction of the external space 68.
  • the duration of the impregnation depends in both cases on the characteristics of the pump, but is generally of the order of 5 to 10 minutes.
  • the bleaching solution can be based on hydrogen peroxide or sodium chlorite.
  • the quantity of solution absorbed by the cotton is not determined by expression by compressed air or by suction under vacuum, therefore by operations according to the impregnation proper, but by an appropriate concentration of a suitable wetting agent in the impregnation bath.
  • This way of adjusting the percentage of liquid absorption in cotton has the advantage, compared to compression by compressed air, that deaeration before steam treatment is made easier.
  • the pump 5 and possibly the pump 6 are stopped, if it is still running, and the valve 26 is closed, if it is open.
  • the valve 45 is opened and steam is thus admitted into the upper part of the external space 68. It should be noted that whatever the variant of impregnation practiced, there is always an air cushion above liquid which if found in the autoclave.
  • the valve 51 is opened.
  • the bath is discharged through the conduits 10, 14 and 49 towards the reservoir 3.
  • the air cushion acts as a thermal insulator and the bath is not substantially reheated by the steam which discharges it.
  • the temperature measurement device 50 provided at the inlet of the conduit 49 but beyond the valve 51, in the direction of the reservoir 3, controls this valve 51.
  • the device 50 is adjusted so that it closes the valve when the temperature to which it is subjected exceeds a determined value. This value corresponds to the steam temperature.
  • the evacuation of the autoclave is therefore interrupted at the moment when the steam has reached the temperature measuring device 50 and has therefore passed the valve 51.
  • the temperature measuring device must be sensitive to both liquids and gases.
  • the bleaching solution arriving in the reservoir 3 is, as far as necessary, reconstituted by the addition of agents which are admitted by the conduits 52 and 54 by the metering pumps 53 and 55.
  • the composition of the bleaching solution changed during treatment in the autoclave.
  • agents initially present in the solution reacted with the elements of the coils.
  • elements of the wire and reaction products entered the solution.
  • the solution must therefore be partially recomposed. It has been found that in practice it is possible to use the same bleaching solution ten times if, after each treatment, when the solution has been discharged towards the reservoir 3, bleaching agent and l 'alkali.
  • the composition of the bath and its reconstitution vary according to the thread to be treated.
  • the bleaching agent is hydrogen peroxide
  • the pH can be determined by a pH meter and the concentration of hydrogen peroxide can be determined by a titration with potassium permanganate.
  • the pH is reconstituted by adding caustic soda and the hydrogen peroxide concentration is reconstituted by adding the required amount of peroxide determined by titration with potassium permanganate.
  • the steam thus heats the coils 69 on both sides, therefore from the inside and from the outside.
  • the vapor is used practically only for the reheating of the coils and the fact that this reheating is carried out as well from the interior as from the outside has as a consequence that it is fast and as uniformly distributed as possible in the coil .
  • a temperature gradient across the coil is thus avoided.
  • a temperature gradient would favor migration.
  • the duration of warming should be as short as possible to avoid migration. This duration is for example approximately five minutes.
  • the steam temperature is for example of the order of 120 to 130 ° C.
  • the duration of this treatment depends on the nature of the cotton and the composition of the bleaching bath previously used, but is for example of the order of 15 minutes.
  • the optimal duration is to be determined beforehand for each cotton to be treated and for each particular composition of the bleaching solution.
  • the duration of the steam treatment must be constant, this duration being counted from the moment when the coils have reached their maximum temperature.
  • the temperature measuring device 66 is inserted inside a coil 69 and the valves 45, 47 and 15 are controlled by this device 66, depending on the temperature measured.
  • the control must be such that the temperature measuring device 66, when the predetermined maximum temperature is reached in the coil, starts a timer which, after a determined duration, for example of 12 minutes, closes the valves 45 and 47 and opens valve 15.
  • the coils 69 are thus steam treated for a fixed period, for example of the order of 12 minutes, from the moment when these coils are sufficiently heated so that the treatment temperature has reached the median zone of the coil.
  • valves 45 and 47 The closure of valves 45 and 47 and the opening of valve 15 results in decompression of the autoclave.
  • the cover of the autoclave 1 can be connected directly to the conduit 25.
  • the conduits 23 and 24 can be omitted in the embodiment according to Figure 1 and the conduit 23 can be omitted in the embodiment according to FIG. 3.
  • the overflow of the autoclave 1 takes place via the conduit 24 ′, either towards the expansion tank 2 if the valve 26 is open, or towards the general evacuation conduit 13 if the valve 26 is closed.
  • the conduit 24 ′ therefore plays the role of the conduits 23 and 24 of the embodiments according to FIGS. 1 and 3.
  • the conduit 24 ′ also allows, in the embodiment according to FIG. 3, the introduction of steam into the upper part of the exterior space 68 if the valve 45 is open. Indeed, the steam can then pass through the conduits 43, 44, 24, 25 and 24 'in the upper part of this external space 68. All of this does not modify the functions described above of the known installation of the Figure 1 and the installation according to the invention of Figure 3.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP80200341A 1979-04-19 1980-04-15 Procédé de blanchiment et de teinture de bobines de fil et installation pour sa mise en oeuvre Expired EP0018047B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2/57740A BE875692A (fr) 1979-04-19 1979-04-19 Installation de blanchiment et de teinture de bobines de fil et procedes mis en oeuvre par cette installation
BE57740 1979-04-19

Publications (2)

Publication Number Publication Date
EP0018047A1 EP0018047A1 (fr) 1980-10-29
EP0018047B1 true EP0018047B1 (fr) 1983-12-21

Family

ID=3865453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200341A Expired EP0018047B1 (fr) 1979-04-19 1980-04-15 Procédé de blanchiment et de teinture de bobines de fil et installation pour sa mise en oeuvre

Country Status (6)

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US (1) US4300251A (es)
EP (1) EP0018047B1 (es)
JP (1) JPS5620664A (es)
BE (1) BE875692A (es)
DE (1) DE3065934D1 (es)
ES (1) ES8104461A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330690B1 (de) * 1987-08-29 1992-10-21 Xorella AG Verfahren zum dämpfen von kreuzspulen und vorrichtung zum durchführen des verfahrens
DE3943130A1 (de) * 1989-12-28 1991-07-04 Palitex Project Co Gmbh Spulenhuelse fuer eine fixierspule und verfahren zum fixieren und faerben von garn
US6238441B1 (en) 1998-07-29 2001-05-29 Burlington Industries, Inc. Hydrophilic yarn dyed polyester process
US6824925B2 (en) * 2001-07-10 2004-11-30 Matsushita Electric Industrial Co., Ltd. Method for manufacturing base for electrode plate, method for manufacturing positive electrode plate and alkaline storage battery
KR101226983B1 (ko) * 2011-04-14 2013-02-06 한미타올 주식회사 소취사 제조 장치 및 그를 이용한 소취사 제조 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US480102A (en) * 1892-08-02 Island
GB190814780A (en) * 1908-07-11 1909-07-01 Harold Williamson Lake Improvements in and relating to Machinery for Manufacturing Curved Printing Plates.
US1269934A (en) * 1915-07-01 1918-06-18 Eugene Holt Beam dyeing-machine.
US1482795A (en) * 1920-11-23 1924-02-05 Eugene D Jefferson Vomiting kier
US1779831A (en) * 1925-06-22 1930-10-28 Francis J Stokes Method of finishing yarns or fabrics
SE328842B (es) * 1968-05-31 1970-09-28 Friedrich W J Karrer
BE763142A (en) * 1970-06-24 1971-07-16 Clermont Vinas Maria T Epouse Autoclave for dyeing textiles
US4079603A (en) * 1973-10-16 1978-03-21 Niels Bergholtz & Company K/B Apparatus for liquid treatment, particularly for textile material dyeing
DE2456250C3 (de) * 1974-11-28 1984-03-22 Then Maschinen- und Apparatebau GmbH, 7170 Schwäbisch Hall Verfahren und Vorrichtung zum Färben von in einem Färbekessel im Pack- oder Aufstecksystem angeordnetem garn- oder faserförmigem Textilgut
DE2737152A1 (de) * 1977-08-17 1979-03-01 Obermaier & Cie Verfahren zum nassbehandeln, insbesondere zum faerben von textilien und vorrichtung zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
BE875692A (fr) 1979-10-19
JPS5620664A (en) 1981-02-26
US4300251A (en) 1981-11-17
EP0018047A1 (fr) 1980-10-29
DE3065934D1 (en) 1984-01-26
ES490714A0 (es) 1981-04-01
ES8104461A1 (es) 1981-04-01

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