METHOD FOR THE TREATMENT OF A TEXTILE SUBSTRATE, AND DEVICES FOR CARRYING OUT SAID METHOD

Abstract

A method for the treatment of a textile substrate is described, in which the substrate is arranged in a treatment device and treated with an aqueous treatment bath. Here the moisture of the textile substrate is adjusted to a predetermined moisture in the beginning of the treatment, whereby the treatment bath volume to be sprayed on the respective subject and per time unit is determined exactly, so that the textile subject provides the defined predetermined moisture at the end of the treatment. The therefore used devices enables the realization of the method for textile substrates designed as a fabric strand, a wide fabric web package and a fabric package.

Claims

1. A method for treatment of a textile substrate, at which the textile substrate is arranged in a treatment device and there treated with an aqueous treatment bath, that contains chemicals and treatment agents needed for the respective treatment in a concentration chosen for the respective treatment, comprising the steps of: a) adjusting in the beginning of the treatment, the moisture of the textile substrate to be treated to 40% to 180%, relative to the dry weight of the textile fabric to be treated, b) heating the textile substrate to a temperature needed for the respective treatment previously, simultaneously herewith or hereafter, c) determining a treatment bath volume adjusted per time unit by pumping the treatment bath via a bypass from at least one vessel for preparing the treatment bath through a pressure pump, a flowmeter and a control valve back into the at least one vessel for preparing the treatment bath, d) spraying hereafter the treatment bath volume of the respective treatment determined per time unit linearly, progressively and/or degressively sprayed on the textile substrate for a predetermined treatment time, so that due to the spraying of the treatment bath volume during the treatment the moisture of the textile substrate is linearly, progressively and/or degressively increased thus far, that the treated textile substrate has final moisture values between 70% and 300%, at the end of the treatment, relative to the dry weight of the textile substrate to be treated, e) transporting during the spraying of the treatment bath on the textile substrate, the textile substrate in the treatment device with an even speed as an endless fabric strand, or reversibly as a fabric reel in a width state, or, if the textile substrate is designed as a yarn package, the sprayed treatment bath is transported through the textile substrate or through the yarn package by rotation of the fabric reel or the yarn package, f) and removing the treatment bath which is isolated and not absorbed during treatment from the textile substrate, collected and sprayed again until the predetermined treatment time is elapsed or the treatment bath is sprayed on the textile substrate as far as possible.

2. The method according to claim 1, wherein the textile substrate is designed as an endless fabric strand or as reversibly transported fabric reel, that the moisture of the textile substrate to be treated is adjusted by spraying a defined water volume on the textile substrate in the beginning of the treatment and that the endless fabric strand or the fabric reel is transported in the treatment device for a predetermined time until the textile substrate provides the moisture needed in the beginning of the treatment of between 40% and 180%, relative to the dry weight of the textile substrate to be treated, viewed over the entire surface.

3. The method according to claim 1, wherein the textile substrate is designed as a fabric reel, in a width state or as a yarn package that the moisture of the textile substrate to be treated is adjusted by spraying a defined water volume on the textile substrate respectively on the yarn package in the beginning of the treatment, and that the fabric reel respectively the yarn package is rotated, until the textile substrate provides a moisture between 40% and 180%, relative to the dry weight of the textile substrate to be treated.

4. The method according to the claim 1, wherein the textile substrate is designed as an endless fabric strand or as a fabric reel, that the textile substrate is wetted with water in the beginning of the treatment, especially with heated water or saturated steam, and that hereafter a dehydration of the wetted textile substrate to the moisture adjusted in the beginning of the treatment is carried out.

5. The method according to claim 4, wherein the dehydration of the textile substrate is carried out by flow against and/or by perfusing with air, especially with heated air.

6. The method according to claim 1, wherein the temperature of the textile substrate to be treated is adjusted to a value between 40 C. and 140 C., depending on the respective kind of treatment and the fiber substrate to be treated.

7. The method according to claim 6, wherein the textile substrate to be treated consists of synthetic fibers.

8. The method according to claim 1, wherein the textile substrate to be treated consists of natural fibers and that the treatment is carried out of a temperature of the textile substrate to be treated between 40 C. and 110 C.

9. The method according to claim 1, wherein the textile substrate to be treated consists of natural fibers or contains them predominantly and that the moisture of the textile substrate to be treated is adjusted to 80% to 180%, preferably to 120% to 180%, in the beginning of the treatment, respectively relative to the dry weight of the textile substrate to be treated.

10. The method according to claim 9, wherein the textile substrate to be treated consists of natural fibers or contains them predominantly and that the moisture of the textile substrate is increased during treatment by spraying of the treatment bath, until the textile substrate provides a final moisture value between 180% and 300%, at the end of the treatment, respectively relative to the dry weight of the textile substrate to be treated.

11. The method according to claim 1, wherein the textile substrate to be treated consists of synthetic fibers or contains them predominantly and that the moisture of the textile substrate to be treated is adjusted to 40% to 120%, in the beginning of the treatment, respectively relative to the dry weight of the textile substrate.

12. The method according to claim 11, wherein the moisture of the textile substrate is increased during treatment by spraying of the treatment bath, until the textile substrate provides a final moisture value between 90% and 250%, at the end of the treatment, respectively relative to the dry weight of the textile substrate to be treated.

13. The method according to claim 1, wherein the treatment bath volume sprayed on per time unit is varied between 1 l/min and 12 l/min.

14. The method according to claim 13, wherein the treatment bath to be sprayed on is sprayed on the textile substrate to be treated with a pressure between 1.5 bar and 6 bar.

15. The method according to claim 1, wherein the textile substrate is heated to the respectively needed treatment temperature by tempered air appropriately supplied into the treatment device, which particularly also causes the transport of an endless fabric strand during its treatment, and/or by radiant heat during the whole treatment.

16. The method according to claim 1, wherein a pre-treatment bath, a bleaching bath, an alkalization bath, a desizing bath, an enzyme bath, a dyeing bath, a washing bath, a soaping bath, a post-treatment bath and/or a softening bath is chosen as treatment bath.

17. The method according to claim 1, wherein the fabric reel is driven with a rate of rotation between 700 rpm and 4,000 rpm during the adjustment of the moisture in the beginning of the treatment and with a rate of rotation between 5 rpm and 1,200 rpm after the spraying of the treatment bath volume determined per time unit.

18. The method according to claim 1, wherein a substrate consisting of cotton or a cotton-containing substrate is treated and especially dyed as textile substrate with a dyeing bath containing at least one reactive dye.

19. The method according to claim 18, wherein the amount of salt used in the dyeing process is reduced, whereby the concentration of the reduced amount of salt varies between 0 g/l and 30 g/l.

20. A device for realization of the method according to claim 1, whereby the device comprises: a treatment device for arranging the textile substrate to be treated in the form of an endless fabric strand, an application nozzle for spraying the treatment agent, a reel for supporting the transport of the endless fabric strand, which is continuously transported in the treatment device, a transport nozzle impinged with gas, especially with air, for the endless fabric strand during the treatment and an outlet allocated at the bottom of the treatment device, for the treatment bath, that is not absorbed by the textile substrate, wherein a) the transport nozzle is allocated behind the reel, viewed in the direction of the transport of the endless fabric strand to be treated, b) the application nozzle for spraying the volume of the treatment bath, which is to spray each time unit onto the fabric strand, is located in the section of the reel, and c) a bypass is attached to the application nozzle for reproducible adjusting of the treatment bath volume to be sprayed on per time unit, which includes a bypass calibration pipe, a pressure pump, a flowmeter, a first control valve, a second valve and at least one vessel for treatment liquor.

21. The device according to claim 20, wherein a collection vessel for the treatment bath with a level regulation is attached to the outlet allocated at the bottom of the treatment device, so that the there collected treatment bath is by overrunning a predetermined level returned to the vessel for treatment liquor again through a feedback pipe, which is equipped with a pump in case of exceeding an adjustable level.

22. The device according to claim 20, wherein a vessel for preparing the treatment bath is provided, that injects the treatment bath into the vessel for treatment liquor through a pipe equipped with a further pressure pump and a dispensing valve, preferably with a volume adjustable per time unit.

23. The device according to claim 20, wherein the bypass calibration pipe is connected by a pipe, which extends between the bypass calibration pipe and the application nozzle and is equipped with a third valve, whereby the pressure pump continuously supplies the treatment bath volume determined per time unit via the bypass calibration pipe if the first control valve and the third valve are opened as well as the second valve is closed.

24. The device according to claim 20, wherein an element is attached to the bottom section of the treatment device, which separates during the treatment the treatment bath not absorbed from the fabric strand.

25. The device according to claim 24, wherein the element is designed as a fabric store, whereby the floor of the fabric store is provided with openings.

26. The device according to claim 20, wherein the reel is allocated in a case, which is attached to the treatment device and that the application nozzle for spraying of the treatment bath is allocated at a head side of the case.

27. The device according to claim 20, wherein a dehydration module and/or a further transport nozzle for the fabric strand driven by the treatment bath is/are allocated in the treatment device.

28. The device according to claim 27, wherein the dehydration module is allocated prior to the reel and/or the transport nozzle driven by treatment bath is allocated behind the reel, viewed in a transport direction of the fabric strand.

29. The device according to claim 27, wherein the dehydration module provides a pipe-like duct for the endless fabric strand, which is connected through a pipe to a side channel blower, especially a frequency-controlled side channel blower, that the hereby compressed air, heated by a heat exchanger is supplied to the duct of the fabric strand, while the air having perfused the duct of the fabric strand is simultaneously removed from the duct of the fabric strand and lead through a fluff filter, a cooler and/or a water separator and returned to the side channel blower.

30. The device according to claim 27, wherein the duct of the fabric strand of the dehydration module contains a cross section with an adjustable diameter.

31. The device according to claim 30, wherein the duct of the fabric strand of the dehydration module provides a rectangular cross section, that the rectangular cross section is formed by two interlinking U-shaped sections, whereby the first U-shaped section is provided with the pressure-sided joining of the side channel blower and the second U-shaped section is provided with the suction-sided join of the side channel blower, and that the first U-shaped section is movable in the direction towards the second U-shaped section and in the opposite direction, or that the second U-shaped section is movable in the direction of the first U-shaped section and in the opposite direction.

32. The device according to claim 30, characterized wherein the pipe-like duct of the fabric strand provides a U-shaped cross section, whereby the legs of this U-shaped section are interlinked by a first outwardly arched wall section thereby forming the outer pipe, and that a second section arched contrarily to the first wall section is allocated in the outer pipe, which is mounted movably in the direction of the first wall section and in the opposite direction.

33. The device according to claim 27, wherein the pressure-sided joining of the side channel blower is provided with a nozzle allocated in the duct of the fabric strand and/or that the suction-sided joining of the side channel blower is provided with a suction chamber allocated in the duct of the fabric strand the water aspirated from the fabric strand during the dehydration of the fabric strand.

34. A device for realization the method according to claim 1, whereby the device comprises: a treatment device for taking up the textile substrate to be treated which is designed as a fabric web with a predetermined length, and two driven cylindric rolls, whereby the drive of the rolls is designed such, that the fabric web is transported reversibly from the one roll to the other roll and vice versa during the treatment and that it is guided and kept in a wide state via return pulleys, and that the treatment device provides an outlet at its bottom for the treatment bath, that is not absorbed by the textile substrate, wherein, a) in the treatment device at least one application nozzle is provided parallel to the width of the fabric web and in distance to it, b) that the at least one application nozzle is designed as a number of application nozzles, adapted to the width of the fabric web, c) that a squeezing unit (Q1) is provided in between the rolls (W1, W2), and d) that a bypass is attached to the at least one application nozzle for adjusting the treatment bath volume sprayed per time unit, that includes a bypass calibration pipe, a pressure pump, a flowmeter, a first control valve, a second valve and at least one vessel for treatment liquor.

35. The device according to claim 34, wherein a collection vessel for the treatment bath with a level regulation is attached as an outlet at the bottom of the treatment device and that the there collected treatment bath is piped to the collection vessel for the treatment bath through a feedback pipe equipped with a pump in case of exceeding an adjustable level.

36. The device according to claim 34, wherein a vessel for preparing the treatment bath is provided, that injects the treatment bath into the vessel for treatment liquor through a pipe equipped with a further pressure pump and a dispensing valve, in a volume adjustable per time unit.

37. The device according to claim 34, wherein the bypass calibration pipe is connected by a pipe, which extends between the bypass calibration pipe and the application nozzle and equipped with a third valve, whereby the pressure pump continuously injects the treatment bath volume previously determined per time unit to the application nozzle by the bypass calibration pipe if the first control valve and the third valve are open as well as the second valve is closed.

38. The device according to claim 34, wherein a heating element, for tempered air and/or steam to be injected in the treatment device, is attached to the treatment device and/or that a heat exchanger and/or IR-radiator is/are attached in the treatment device.

39. A device for realization the method according to claim 1, whereby the device provides a horizontal centrifuge shaft in the treatment device for mounting the textile fabric to be treated during the treatment as a thread package or a fabric web package, whereby the centrifuge shaft provides a horizontal central bore equipped with at least one bath outlet opening, whereby furthermore the centrifuge shaft has a rotational drive at its one end and a bearing block as well as an end-sided supply of treatment bath at its other side, whereby the rotational drive and the bearing block are arranged outside the treatment device and the treatment device is provided with an outlet, wherein a) that the at least one bath outlet opening is arranged in the centrifuge shaft and designed as an application nozzle and preferably all bath outlet openings are designed as application nozzles, b) that for reproducible adjustment of the treatment bath volume applied per time unit a bypass is attached to the application nozzle as supply of treatment bath, that includes a bypass calibration pipe, a pressure pump, a flowmeter, a first control valve, a second valve and at least one vessel for the treatment liquor, and c) that an outlet is provided at the bottom side of the treatment device for the treatment bath which is not absorbed by the textile substrate.

40. The device according to claim 39, wherein a collection vessel for the treatment bath with a level regulation is attached to the outlet allocated at the bottom of the treatment device, so that the there collected treatment bath is returned to the vessel for treatment liquor again through a feedback pipe, which is equipped with a pump in case of exceeding a predetermined level.

41. The device according to claim 39, wherein a vessel for preparing the treatment bath is provided, which supplies the treatment bath into the vessel for treatment liquor through a pipe equipped with a further pressure pump and a dispensing valve, preferably in a volume adjustable per time unit.

42. The device according to claim 39, wherein the bypass calibration pipe is attached to pipe, that extends between the bypass calibration pipe and the application nozzle and is equipped with a third nozzle, whereby the pressure pump continuously supplies the treatment bath volume determined per time unit via the bypass calibration pipe if the first control valve and the third valve are opened as well as the second valve is closed.

43. The device according to claim 20, wherein the application nozzle for spraying the treatment bath determined per time unit is designed as a flat nozzle, a tubular nozzle or conical nozzle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The present invention is now described in detail and shown in FIGS. 1 to 11. Hereby:

[0073] FIG. 1 is a first schematic figure of the first device for the treatment of an endless fabrics strand,

[0074] FIG. 2 is a schematic representation of a vertical section of a first embodiment of the duct of the fabric strand 12a of the dehydration module referred to as 12 in FIG.

[0075] FIG. 3 is like FIG. 2, but as a horizontal section along the line A-B in FIG. 2,

[0076] FIG. 4 is a schematic representation of a vertical section of a second embodiment of the duct of the fabric strand 12a of the dehydration module referred to as 12 in FIG. 1,

[0077] FIG. 5 is like FIG. 1, but as a horizontal section along the line A-B in FIG. 4,

[0078] FIG. 6 is a schematic representation of a vertical section of a third embodiment of the duct of the fabric strand 12a of the dehydration module referred to as 12 in FIG. 1,

[0079] FIG. 7 is like FIG. 6, but as a horizontal section along the line A-B in FIG. 6,

[0080] FIG. 8 is a schematic representation of a vertical section of a fourth embodiment of the duct of the fabric strand 12a of the dehydration module referred to as 12 in FIG. 1,

[0081] FIG. 9 is like FIG. 8, but as a horizontal section along the line A-B in FIG. 8,

[0082] FIG. 10 is a second schematic figure of the device for the treatment of a fabric reel in a bride state, which is transported reversely in the treatment device, and

[0083] FIG. 11 is a schematic figure of the third device for the treatment of a textile substrate designed as a fabric reel, in which the sprayed treatment bath is transported by rotation of the fabric reel.

DETAILED DESCRIPTION OF THE INVENTION

[0084] In the FIGS. 1 to 11, the same parts are provided with the same reference numbers.

[0085] The device shown in FIG. 1, which is used for the treatment of an endless fabric strand with a treatment bath according to the previously described method and which is described as first device, provides a cylindric treatment device 1, which extends length wisely, whereby the front side and the back side of the treatment device 1 in arched, so that the treatment device 1 accordingly enables a treatment of a fabric strand 32 at treatment temperatures over 100 C. and thereby in case of overpressure.

[0086] The feeding of the treatment device 1 with the fabric strand 32 to be treated takes place by a feeding aperture 1a. Here the respective fabric strand 32 is drawn via a reel 4, which is allocated at the head side of the treatment device 1, and via an air-impinged transport nozzle 6 if necessary, until an endless fabric strand is produced through sewing of the start of the fabric web with its end. After closure of the feeding aperture 1a, the treatment device 1 is arranged for the respective treatment of the endless fabric strand 32, which is transported solely in the direction of the arrow via the reel 4 and the air-impinged transport nozzle 6 with the respectively chosen speed during the treatment with the respective treatment bath. An element 2 designed as a J-box is allocated behind the reel 4 and the air-impinged transport nozzle 6 viewed in the transport direction, whereby this element 2 guarantees, that the fabric strand is folded, put down and further transported in element 2 on the one hand, and that the treatment bath sprayed on the transported fabric strand to be treated via an application nozzle 24 does not get in contact again with the endless fabric strand on the other hand. To this, a duct of the fabric strand 12a of the dehydration module 12 in the direction of the transport of the endless fabric strand, whereby this dehydration module 12 is described hereinafter in detail in conjunction with the FIGS. 2 to 11.

[0087] The feeder of the air needed for the transport of the fabric strand to the transport nozzle 6 occurs by aspirating the air out of the treatment device 1 via a blower 3, especially a frequency-controlled blower, and by piping the air in the transport nozzle 6 through the appropriate pipe. Due to a heating element 9, which is assigned to the treatment device 1 and/or due to a not depicted heat exchanger, which is preferably allocated downstream of the blower 3, the air supplied to the transport nozzle 6 can be heated to a predetermined temperature, whereby the endlessly transported fabric strand 32 is heated accordingly by this air.

[0088] Only regarding the aspect of increasing the application possibilities of the device, but not of the here claimed method, a liquor cycle is assigned to the treatment device 1, which contains the bath pump 10, a heat exchanger 11 and a transport nozzle 5 run with liquor, whereby the pipe for the transport of the bath removes the treatment bath at the foot end of the treatment device and leads it to the transport nozzle 5 to be impinged with the bath through the bath pump 10 allocated in the pipe and through the heat exchanger 11.

[0089] To determine the treatment bath volume adjusted per time unit and to reproducibly spray it on the endless fabric strand, which is transported through the treatment device via the transport nozzle 6, via application nozzle 24, which is preferably a fan nozzle, a bypass is attached to the application nozzle 24, which is allocated at the head end of the case 24a of the reel 4, which includes a bypass calibration pipe 23, a pressure pump 19, a flowmeter 20, a first control valve 21, a second valve 21a and at least one vessel for treatment liquor 18.

[0090] Via the bypass calibration line 23, the respective treatment bath is transported through the pressure pump 19, the flowmeter 20, the first control valve 21, the heat exchanger 22 and through the opened second valve 21a and the bypass calibration pipe 23 as long as the treatment bath volume calibrated per time unit is supplied reproducibly to the vessel for treatment liquor 18. Only then a third valve 21c, through which the bypass calibration pipe 23 is attached to the application nozzle 24, is opened, while the second valve 21a is closed simultaneously with this, which leads to linear, progressive and/or degressive spraying of the treatment bath volume determined per time unit on the transported endless fabric strand through the pipe 21b of the application nozzle 24, until the predetermined treatment time is elapsed or the treatment bath is largely sprayed on the textile substrate. In this context, largely means that almost the whole bath is sprayed on the textile substrate despite a small dead volume of the pipe containing the treatment bath, whereby this pipe- and case-depending dead volume accounts for about 2% to 6%, referred to the total volume of the bath.

[0091] An outlet is arranged at the bottom of the treatment device 1, which contains a collection vessel for the treatment bath 18 equipped with a level regulation. In case of exceeding the configurable level, the there accumulated treatment bath is returned to the collection vessel for the treatment bath 18 through a feedback pipe 8a, which contains a pump 26. The previously described element 2 arranged in the treatment device 1 prevents that a small percentage of the fabric strand 32 possibly gets in undesired contact with the treatment bath previously sprayed via the application nozzle 24.

[0092] Furthermore, the device provides a vessel for preparing the treatment bath 27, which is attached to the vessel for treatment liquor 18 through a pipe 27a suchlike, that the treatment bath is injected from the vessel for preparing the treatment bath to the vessel for treatment liquor through the pipe 27a, which is equipped with a further pressure pump 28 and a dispensing valve 29, preferably with a volume configurated per time unit. Thus enables that the actual treatment bath can be split in two treatment baths, that contain different treatment agents, or that the actual treatment bath contains a number of treatment agents and thus is split into a first treatment bath proportion, which is allocated in the vessel for treatment liquor 18, and a second treatment bath proportion, whereby the second treatment bath proportion is allocated in the vessel for preparing the treatment bath 27, so that a controlled, time-delayed exposure of equal and different treatment agents is allowed due to time-delayed addition of the first treatment bath and the second treatment bath.

[0093] Due to a circulation control 7 it is guaranteed that the speed of the transported endless fabric strand is measured and that the fabric strand is transported at this speed, preferably at a constant speed, during the treatment.

[0094] Especially good treatment results are achieved with the first embodiment of the inventive device, if a heat exchanger (not depicted) is supplied in the flow direction of the air supplied to the transport nozzle 6, so that the fabric strand impinged with this air has an adjustable constant temperature.

[0095] The dehydration module overall referred to as 12, which is arranged in the treatment device, provides a pipe-like duct 12a for the fabric strand 32, which is attached to a side channel blower 14, especially with a frequency-controlled side channel blower through a pipe 34. The air which is compressed herewith and potentially heated additionally by a heat exchanger 13 is supplied to the duct of the fabric strand 12a, while the air which perfused the fabric strand 32 is removed from the duct of the fabric strand 12a through a fluff filter 17, a cooler 16 and/or a water separator 15 and is supplied to the side channel blower 14 again.

[0096] By means of the FIGS. 2 to 11 described hereinafter the dehydration module is described in detail.

[0097] The dehydration module overall referred to as 12 in FIG. 1 provides a pipe-like duct 12a for the endless fabric strand. This duct of the fabric strand 12a is attached to the pressure-side of a side channel blower 14 at the head end viewed in the transport direction, whereby the temperature is increased up to about 40 C. to about 95 C. due to the compression of the air in the side channel blower 14. This temperature of the compressed air transported in the direction of the arrow 33 can be increased further by a heat exchanger 13, if it is desired and necessary, so that heated air is supplied to the pipe-like designed duct of the fabric strand 12a at the pressure-sided joining, while the air that perfused the duct of the fabric strand 12a is removed at the bottom side through a fluff filter 17, a cooler 16 and/or a water separator 15 and supplied again to the side channel blower 14. According to the design of the dehydration module 12 and especially of the pipe-like designed duct of the fabric strand 12a, there are various possibilities as they are described in detail in FIGS. 2 to 11 hereinafter.

[0098] The first embodiment of the duct of the fabric strand 12a of the dehydration module shown in the FIGS. 2 and 3 provides an upper pressure-sided joining and a bottom suction-sided joining 109 to the side channel blower 14, both formed as tubes. The compressed air is supplied through the pressure-sided joining 108 in the direction of the arrow 100, piped through the fabric strand 32 and removed through the suction-sided joining 109 in the direction of the arrow 100a. The endless fabric strand to be dehydrated (not depicted) is transported in the direction of the arrow 31 through the duct via the reel 4 and/or the transport nozzle 6 (FIG. 1) in a predetermined speed controlled by the circulation control 7 and is thus dehydrated evenly.

[0099] The duct of the fabric strand 12a provides respectively a funnel-shaped extension 119a and 119b respectively on the inlet side and on the outlet side, by what the injection of the fabric strand to be dehydrated 32 and the expel of the fabric strand are facilitated. Between those two funnel-shaped extensions a cylindric middle section 119c extends. At opposite sections of the cylindric middle section 119c the pressure-sided joining 108 and the suction-sided joining 109 are provided, whereby the air outlet of the pressure-sided joining 108 is designed as a nozzle and the air inlet of the suction-sided joining is designed as a perforated plate 119d with gliding bars 119e made of Teflon, which are arranged in front of it. Thus, it is prevented, that the endless fabric strand 32 which is transported through the duct of the fabric strand 12a during dehydration, is sucked in into suction-sided join 109, which could result in a damage of the fabric strand. Furthermore, an improvement of the careful transport of the fabric strand 32 through the duct is achieved by the fact that the cylindric section 119c of the duct of the fabric strand 12a is lined with Teflon 119f on the inside.

[0100] As it is seen in FIG. 2, the central axes of the pressure-sided joining 108 and of the suction-sided joining 109 are arranged shifted relative to one another, so that the central axis of the suction-sided joining 109 is arranged relatively higher than the central axis of the pressure-sided joining 108, viewed in the direction of the transport 31. Due to such an arrangement of the central axis it is achieved that the air entrained during the transport of the fabric strand can be removed faster and better from the duct of the fabric strand 12a at the suction-sided join 109. The cross section of the duct of the fabric strand 12a depicted in the FIGS. 2 and 3 is not modifiable.

[0101] The second embodiment of the duct of the fabric strand 12a depicted in the FIGS. 4 and 5, provides a pressure-sided joining 108 and a suction-sided joining 109 to the side channel blower 14 (FIG. 1). The compressed air is supplied in the direction of the arrow 100 through the pressure-sided joining 108, piped through the fabric strand 32 and removed in the direction of the arrow 100a through the suction-sided joining 109. The fabric strand 32 (FIG. 1) to be dehydrated is transported through the duct of the fabric strand 12a in the direction of the arrow 31 in a predetermined speed via the reel 4 and/or the transport nozzle 6 (FIG. 1).

[0102] The duct of the fabric strand 12a provides respectively a funnel-shaped extension 119a and 119b respectively on the inlet side and on the outlet side, by what the injection of the fabric strand to be dehydrated and the expel of the fabric strand are facilitated. Between those two funnel-shaped extensions a rectangular pipe-like middle section 120 extends. At opposite sections of the rectangular pipe-like middle section 120 the pressure-sided joining 108 and the suction-sided join 109 are provided. The air outlet of the pressure-sided joining is designed as a nozzle.

[0103] To the pressure-sided joining 108 a first U-shaped section 124 is attached in such a way, that it entwines a second U-shaped section 121, which is provided at the suctions-sided joining 109, partially by forming the rectangular pipe-like middle section 120, whereby the legs 122 of the second U-shaped section 121 fits hermetically to the legs 122a of the first U-shaped section 124. At the bottom of the second U-shaped section 121a, a pipe-like suction-sided joining 109 is provided. In this bottom section 123 opening heights are provided. To modify the cross section of the duct of the fabric strand 12a this suction-sided joining 109 is movable towards the pressure-sided joining 108 and also away from it, as it is marked with the double arrow 118. Accordingly, the cross section of the duct 12a of the fabric strand is reduced and enlarged in an adjustable measure. Thus, it is achieved that the duct of the fabric strand 12a is adaptable to the fabric strand 32 to be dehydrated respectively, by what the dehydration level and the careful transport of the fabric can be further optimized.

[0104] The third embodiment of the dehydration module 12 depicted in the FIGS. 6 and 7 provides a duct of the fabric strand 12a, which contains a pressure-sided joining 108 and a suction-sided joining 109 to the side channel blower 14. The compressed air is supplied through the pressure-sided joining 108 in the direction of the arrow 100, piped through the duct of the fabric strand 32 and removed through the suction-sided joining 109 in the direction of the arrow 100a. The fabric strand to be dehydrated (not depicted) is transported through the duct of the fabric strand 12a in the direction of the arrow 31 via the reel 4 and/or the transport nozzle 6 in a predetermined speed. The duct of the fabric strand 12a provides respectively a funnel-shaped extension 119a and 119b respectively on the inlet side and on the outlet side, by what the injection of the fabric strand to be dehydrated 32 and the expel of the fabric strand are facilitated. Between those two funnel-shaped extensions 119 a and 119b a middle section 125 extends, which partially shows a U-shaped cross section 126, whereby the legs 127 and 127a of the U-shaped cross section 126 are attached to each other by a first, outwardly arched wall section 128, thereby forming the outer pipe in the middle section 125. Inside the outer pipe a second section 129 is arranged, which is arched oppositely to the first wall section and is mounted movable toward the first wall section 128 and away from it, as it is indicated by the double arrow 118.

[0105] The pressure-sided joining 108 to the side channel blower 14 is attached to the first, outwardly arched wall section 128 and the second suction-sided joining 109 to the side channel blower 14 is attached to the second arched section 129. In the second arched section opening heights are provided. This embodiment as well allows that the cross section of the duct of the fabric strand 12a can be reduced and enlarged to customize the duct of the fabric strand to the fabric to be dehydrated respectively. In this embodiment, also the pressure-sided joining is designed as a nozzle.

[0106] The fourth embodiment of the duct of the fabric strand 12a of the dehydration module 12 shown in the FIGS. 8 and 9, also provides a pressure-sided joining 108 and a suction-sided joining 109 to the side channel blower 14 (FIG. 1). The compressed air is supplied in the direction of the arrow 100 through the pressure-sided joining, piped through the fabric strand 32 and removed in the direction of the arrow 110a (FIG. 9) through the suction-sided joining. The endless fabric strand 32 to be dehydrated is transported through the duct of the fabric strand 12a (FIG. 1) in the direction of the arrow 117 via the reel 4 and/or the transport nozzle 6 in a predetermined speed.

[0107] The duct of the fabric strand 12a provides respectively a funnel-shaped extension 119a and 119b respectively on the inlet side and on the outlet side, by what the injection of the fabric strand to be dehydrated and the expel of the fabric strand are facilitated. Between those two funnel-shaped extensions a middle section 125 extends. The pressure-sided joining 108 and the suction-sided joining 109 are attached to the opposite sections of the middle section 125. Also in this fourth embodiment, the air outlet of the pressure-sided joining 108 is designed as a nozzle.

[0108] The rectangularly shaped middle section 125 of the duct of the fabric strand 12a provides a suction chamber 130 at the opposite sections of the pressure-sided joining 108, which is swivel-mounted (swing mounted) in the direction of the arrow 130 and furthermore mounted shiftably hereto in the direction of the arrow 118a. Due to the swivel and shiftable mounting of the suction chamber 130 relatively to the pressure-sided joining 108 it is enabled, that the cross section of the duct of the fabric strand 12a is reduced or enlarged by swiveling of the suction chamber 130 in the direction of the arrow 118 and/or by shifting of the suction chamber 130 in the direction of the arrow 118a depending on the respective endless fabrics strand, whereby the swivel-mounted mounting of the suction chamber 130 additionally results in an optimizing of the mounting of the suction section for the air perfusing the endless fabric strand. The front surface 131 of the suction chamber 130 is provided with opening heights for air 132, so that the air sucked off at the suction-sided joining 109 gets into the suction chamber 130.

[0109] Depending on the width of the fabric strand, at least one application nozzle is provided in the treatment device 1 (shown in FIG. 10), although usually a number of application nozzles 24, which is adjusted to the width of the fabric strand, whereby the treatment bath volume sprayed on per time unit is sprayed on the fabric 32a by the application nozzle 24 respectively the number of transportation nozzles 24 during its transport.

[0110] As it is previously emphasized, the squeezing unit Q1 is not necessary inevitably or mandatorily, but is nevertheless purposefully allocated in the treatment device 1, whenever especially tight woven fabrics or comparatively thick fabrics, like especially terry goods, tarpaulin or woven fabrics for the production of sails or other, especially thick technical fabrics are treated. Also, this squeezing unit Q1 is advantageous if not the water volume, that is needed for adjusting the needed starting moisture of the fabric to be treated respectively via the application nozzle 24 in the beginning of the previously described method, is sprayed on the transported fabric per time unit, but a water volume bigger than the needed water volume, so that the needed exact starting moisture of the fabric can be configurated by means of the squeezing unit Q1.

[0111] Furthermore, a heating element overall referred to as 9 is attached to the treatment device 1 for heating the fabric to a predetermined treatment temperature, which includes an appropriate pipe 9c, a blower 9a and a heat exchanger 9b hereafter in the device shown in FIG. 10. Due to this heating element 9 the air is removed out of the treatment device through a pipe 9a by the blower 9a and fed into the treatment device 1 as heated air after passing the heat exchanger 9b.

[0112] As well as in the previously described first device, a collection vessel for the treatment bath 8 equipped with a level regulation is arranged at the foot side of the treatment device, so that bath which possibly drips off the fabric, is collected and piped to the vessel for treatment liquor 18 through the feedback pipe and thus this collected bath gets in contact again with the fabric during the treatment.

[0113] For determining the treatment bath volume configurated per time unit and sprayed on the fabric 32, which is reversely transported between the roll W1 and W2 via the application nozzle 24 respectively the number of application nozzles 24, which is respectively are preferably designed as a flat nozzle, a bypass is attached to the application nozzle 24 respectively the application nozzles 24, which includes a bypass calibration pipe 23, a pressure pump 19, a flowmeter 20, a first control valve 21, a second valve 21a and at least a vessel for treatment liquor 18.

[0114] As it is described previously in regards to the first device, the respective treatment bath is transported through the bypass calibration pipe 23 for so long through the pressure pump 19, the flowmeter 20, the first control valve 21, the heat exchanger 22 and the opened second valve 21a, until the treatment bath volume configurated per time unit is supplied reproducibly to the vessel for treatment liquor 18 through the bypass calibration pipe 23. Only then a third valve 21c is opened, through which the bypass calibration pipe 23 is attached to the application nozzle 24, while the second valve 21a is closed simultaneously, which leads to linear, progressive and/or degressive spraying of the treatment bath volume determined per time unit on the endless fabric web through the pipe 21b of the application nozzle 24, until the predetermined treatment time is elapsed or the treatment bath is sprayed on the textile substrate as far as possible. As far as possible in this context means, that despite a small dead volume of the treatment bath containing pipe almost the whole bath is sprayed on the textile substrate to be treated, whereby this pipe- and case-depending dead volume accounts for between about 2% to 6% referred to the total volume of the bath.

[0115] Furthermore, the device provides a vessel for preparing the treatment bath 27, which is attached to the vessel for treatment liquor 18 suchlike that treatment bath is injected from the vessel for preparing the treatment bath 27 to the vessel for treatment liquor 18 through the pipe 27a equipped with a further pressure pump 28 and a dispensing valve 29, preferably in a volume configurable per time unit.

[0116] Hereby it is enabled that the actual treatment bath can be split into two treatment baths for example, which contains different treatment agents or that the actual treatment bath contains a number of treatment agents and thus is split into a first treatment bath proportion, which is allocated in the vessel for treatment liquor 18, and a second treatment bath proportion, whereby the second treatment bath proportion is allocated in the vessel for preparing the treatment bath 27, so that a controlled, time-delayed exposure of equal and different treatment agents is allowed due to time-delayed addition of the first treatment bath and the second treatment bath.

[0117] The third device for realization the previously described method depicted in FIG. 11 provides a treatment device 1 which is equipped with a central, horizontal centrifuge shaft 170 for mounting the textile substrate to be treated 171 during the treatment. Thereby the textile substrate respectively treated with the treatment bath is designed as a thread package, meaning thus as a thread bobbin 171 or as a fabric web wound up on a fabric beam (breast beam). The centrifuge shaft 170 provides a horizontal central bore 170a, whereby this horizontal central bore 170a is equipped with at least one bath opening height and preferably with a number of bath opening heights, whereby those baths opening height meaning bath opening heights are designed as an application nozzle 24 or as a number of application nozzles 24. Furthermore, the centrifuge shaft 170 is equipped with a rotational drive 172 at its one end which is configurable according to its rotational speed, and with a bearing block 173 at its other end, whereby the rotational drive 172 as well as the bearing block 173 are placed outside the treatment device 1.

[0118] The charging of the treatment liquor to the central bore 170a provided in the centrifuge shaft 170 occurs at the position which is labelled with the reference sign 170a in FIG. 11. To the treatment device 1 a low-volume collection vessel for the treatment bath 8 is attached at the bottom side, whereby this collection vessel for the treatment bath 8 provides a level regulation 8a in a way, that in case of exceeding a predetermined level, the bath which is not absorbed by the textile substrate and spun off, is collected in the collection vessel for the treatment bath and can be returned through a feedback pipe 8a.

[0119] Furthermore, a heating element overall referred to as 9 for heating of the fabric reel to a predetermined treatment temperature is provides to the treatment device 1, which consists of an appropriate pipe 9c, a blower 9a and a following heat exchanger 9b in the device depicted in FIG. 11. Through this heat exchanger 9b air is removed from the treatment device 1 by the blower 9a through a pipe 9c and injected in the treatment device 1 after as heated air after passing the heat exchanger 9b.

[0120] To feed the treatment device with the textile subject to be treated (thread bobbin, fabric reel) and to remove this textile substrate after the treatment, the treatment device is constructed bipartitely and provides a removable part, which is attached to the bearing block 173, whereby the treatment centrifuge, which is only depicted schematically in FIG. 11, is described in detail in DE 10 2015 012 544.3, so that the disclosure of DE 10 2015 012 544.3 is made as the content of this description to prevent repetition.

[0121] To determine the treatment bath volume configurable per time unit and to spray it on the fabric reel 171, that rotates in a configurable rotational speed via the application nozzle 24 respectively the number of application nozzles 24, which is respectively are preferably designed as a flat nozzle, a bypass is attached to the application nozzle respectively the application nozzles, which includes a bypass calibration pipe 23, a pressure pump 19, a flowmeter 20, a first control valve 21, a second valve 21a and at least one vessel for treatment liquor 18.

[0122] As it is already described previously for the first and the second device, the respective treatment bath is transported through the bypass calibration pipe 23, the pressure pump 19, the flowmeter 20, the first control valve 21, the heat exchanger 22 and the opened second valve 21a as long as the treatment bath volume configurated per time unit is supplied reproducibly to the collection vessel for the treatment bath 18 through the bypass calibration pipe 23. Just then a third valve 21c, due to which the bypass calibration pipe 23 is attached to the application nozzle 24 through the central bore 170a provided in the centrifuge shaft 170, is opened, while the second valve is closed simultaneously to this, which leads to linear, progressive and/or degressive spraying of the treatment bath volume determined per time unit on the fabric reel through the pipe 21b by the central bore 170a and thus the application nozzle 24, until the predetermined treatment time is elapsed or the treatment bath is sprayed on the textile substrate as far as possible.

[0123] The configuration of the moisture determined in the beginning of the treatment (according to the characteristic a) of the main claim) happens analogously, whereby the treatment bath therefore described in the previous paragraph is replaced by water, so that an appropriate water bath volume is applied reproducible instead of the treatment bath volume.

[0124] Furthermore, the device provides a vessel for preparing the treatment bath 27, which is attached to the vessel for treatment liquor 18 through a pipe 27a suchlike, that the treatment bath is injected from the vessel for preparing the treatment bath to the vessel for treatment liquor through the pipe 27a, which is equipped with a further pressure pump 28 and a dispensing valve 29, preferably with a volume configurated per time unit.

[0125] Thus enables that the actual treatment bath can be split in two treatment baths, that contain different treatment agents, or that the actual treatment bath contains a number of treatment agents and thus is split into a first treatment bath proportion, which is allocated in the vessel for treatment liquor 18, and a second treatment bath proportion, whereby the second treatment bath proportion is allocated in the vessel for preparing the treatment bath 27, so that a controlled, time-delayed exposure of equal and different treatment agents is allowed due to time-delayed addition of the first treatment bath and the second treatment bath.

Examples

[0126] As dyeing allows an especially critical and easy assessment of the dyed textile substrate, especially according to the aspects different shades of color, reproducibility, equality, color differences to the length and width of the dyed fabric and color fastness, and to eliminate the impacts of the pre-treatment and the rewashing, especially the impact of the soaping during reactive dyeing, the three textile substrates listed hereafter in Table 1 were conventionally boiled and bleached and conventionally washed and soaped after the dyeing. After that three textile substrates were dyed respectively in a light shade (yellow, substrate 3) and in a dark shade (black, substrate 1 and 2) in the treatment device depicted and described in FIG. 1 using the previously described method.

[0127] All three textile substrates were made of cotton and were present as single jersey or as piqu and as tubular fabric. The following Table 1 summarizes the relevant data of the dyed textile substrates. The dyeing was implemented at a temperature of 60 C.

TABLE-US-00001 TABLE 1 Treatment Weight Strand Time per bath volume (dry) length revolution sprayed on Substrate [kg] [m] [min] [l/min] 1, piqu 198 813 1.85 3.1 2, piqu 79.5 327 1.42 2.9 3, single jersey 81 498 1.65 2.9

[0128] The single jersey, substrate 3, was dyed yellowy by using the dye combination 1, whereas the other two piqu-products, substrate 1 and 2, were dyed in color black by using the dye combination 2. The reactive dye used therefore and their concentration, referred to the respective fabric weight, are summarized in Table 2.

TABLE-US-00002 TABLE 2 Dye concentration Dye referred to the combination Dye respective fabric weight 1 Levafix Brillant Yellow CA, 1.0150% Levafix Yellow CA, 0.3190% Levafix Fast Red CA 0.0052% 2 Remazol Gold Gelb RGB 0.9450% Remazol Ultra Carmine RGB 0.5376% Remazol Deep Black GWF 6.5600%

[0129] The previously mentioned Levafix-dyes were present as granulate.

[0130] In the beginning of the dyeing the fabric to be respectively dyed was pulled in in the treatment device depicted in FIG. 1 and was made into an endless fabrics strand by the previously described method. Due to spraying a predefined amount of water on the endless fabric strand, which was transported by the transport nozzle 6 in the speed stated in Table 1, by the application nozzle 24, a starting moisture of 140% was configurated for the single jersey and a starting moisture of 150% was configurated for the piqu, respectively referred to the dry fabric weight.

[0131] Due to following spraying of the aqueous dye bath, a soda bath containing 15 g/l and a bath containing 4,5 ml/l sodium hydroxide (concentration of the sodium hydroxide: 38 B) one after the other via the application nozzle 24, the respective dyeing was implemented. The three previously mentioned bathes were applied reproducibly by the application nozzle 24 with the bath volume which is exactly and reproducibly adjusted by the bypass according to Table 1.

[0132] The following Table 3 concretizes the previously stated information.

TABLE-US-00003 TABLE 3 Volume of Starting Volume of Volume sodium moisture End the of natrium immediately moisture dyeing the soda hydroxide bevor immediately bath bath bath Substrate dyeing after dyeing [litre] [litre] [litre] 1, piqu 150% 215% 60 25 45 2, piqu 150% 218% 22 14 18 3, single 140% 196% 25 20 0 jersey

[0133] In the beginning of the dyeing and after a previous adjusting of the previously stated starting moisture and the exact and reproducible adjusting of the bath sprayed through the application nozzle 24 the dyeing bath, which was respectively half split into the cases 18 and 27, was sprayed linearly on the transported fabric strand 32 with the value stated in Table 1 at a temperature of 50 C. After the split amount of bath located in case 18 was almost depleted after 6 to 8 minutes, the dyeing bath from the case 27 was dosed also linearly in the case 18. As soon as a certain bath level was reached in case 27, the previously stated soda bath and after that the sodium hydroxide bath stated in Table 3 was supplied for fixing the dye in the case 27 and dosed from here in case 18, so that these baths were also sprayed on in a volume reducibly adjusted per time unit via the application nozzle 24. After finishing this fixing process, the dyed fabric was neutralized by the addition of acetic acid and post-treated accordingly to a conventional method by rinsing and/or soaping as it is described and justified previously.

[0134] The dyed textile substrates 1 to 3 were dyed impeccably equal, did neither show different colors relative to the length or to the width, just as little than color stains or inequalities, but they did show the excellent fastnesses which are praised by the producer of the dyes stated in Table 2.

[0135] The determination of the moisture of the textile substrate in the beginning of the treatment occurs in accordance to DIN 53923. Here the dry weight of the dry textile substrate to be respectively treated is determined with multiple punched samples. After wetting the textile substrate with water in the beginning of the claimed method and after the respective treatment is made after application of the treatment bath volume adjusted exactly per time unit, the respective punched starting sample and end sample were removed and weighted again after two minutes of free-hanging draining.