Method for continuous dyeing cellulose-containing textile material and a device for its implementation

 

(57) Abstract:

The inventive method for continuous dyeing cellulose-containing textile material is impregnated with an aqueous solution of the salt of an inorganic acid, followed by extraction up to 60-120% humidity, impregnation staining solution and re-spin up to 100-200% humidity by passing the material through the device. The latter contains arranged one after another in the direction of travel of the fabric of the management and the cone-shaped container with a small liquid module. Over capacity installed a pair of clamping elements and a socket for dosed supply of the processing solution in the tank. The container is formed by two vertical walls mounted on inflatable clamping sleeve forming a gap for the passage of the canvas. 2 S. and 6 C. p. F.-ly, 1 Il.

The invention relates to the field of dyeing and finishing production, in particular to a method for continuous dyeing cellulose-containing textile material and device for its implementation.

Well-known problems that exist in the flow dyeing with direct dyes [1] the Dye solution may be in management, and painting propose the author previously phenomenon of the end assemblies, namely, at the beginning and end of the fabric. When passing the first part of the fabric through the solution in the tank, the particles of solution are carried away the cloth that is causing the depletion of the solution, which must be compensated. It may take a while, before there is a relative equilibrium, and the concentration of the solution remains constant. Prior to reaching this state, the final gathering reaches 50-100 m Such areas of the canvas with different and especially with non-permanent coloration is not released with the rest of the goods, and sold as a product of lower quality or are painted in black color. Anyway, due to these final meetings are the inevitable still losing.

Another problem is the fact that the direct dyes are not completely absorbed, and on the canvas unfixed particles after steaming washed away. The output of the dye, i.e. the ratio of the amount actually remaining on the fabric dye to the amount originally deposited dye is far from perfect and is about 60% Neverauskas 40% goes into the sewer and not only increase the cost of goods, but also pose a serious problem to the environment, verwey all copper compounds, which are considered dangerous poisoners wastewater in respect of which should comply with strict government regulations.

It is known that the absorption of direct dyes the fabric is improved by the addition of salts such as sodium chloride or Glauber's [2] salt and dye are applied in the same solution. Thus you can increase the part is actually absorbed by the fibers of the dye and thus, on the one hand, to reduce the loss of the coloring matter and other pollution. However, the addition of salts into a tub of dye in the management when passing the way of finishing fabrics leads to an increase of the final Assembly. Salt enhances the ability of the tissue to absorb, so it quickly absorbs the dye from the solution and the amount of solution at the beginning and end of the fabric even more different concentration.

According to this specific problem, we can say that the basis of the invention lies in the task of developing a method and a corresponding device, allowing you to evenly trim the fabric along its length. This problem is solved by using the proposed method.

First of all, the method is designed for finishing flat fabrics. This canvas is first applied to the second stage of processing, and then the fabric is squeezed to a moisture content of 60 to 120% humidity Values are defined as the ratio of the number of working solution to the dry weight of the fabric, which caused the working solution. The humidity value 120% is the upper limit, wherein the dewatering device is interacting with the rollers still can squeeze the cloth evenly, at higher levels of moisture content to the dewatering device should work with such small linear pressure that is no longer ensured uniformity of extraction and even the danger of separation rollers from each other. On the other hand, the amount of moisture with this practical issue cannot be done any other way, except for impregnating or wetting and subsequent release. Spraying is very difficult to carry out evenly. The same applies to the pouring, as the amount of fluid it is not enough for the formation of a uniform film.

On the canvas with the specified moisture content is now applied to the second working solution (dye or salt depending on what has been applied to it) in a special way. There is no need to pass the cloth through a large number of solution when there is danger and the yeseniya him the second working solution should be in contact with only a small amount of solution, which is quickly absorbed by the cloth and carried them, and in accordance with this constant introduction of fresh working solution is renewed or updated. On the canvas, thus, is applied on both sides of a fresh solution through which has not passed the canvas. Thus the changes of concentration in contact with the canvas working solution, and in accordance with this uneven finish of the fabric is minimized. Next, it is important that after application of the second working fluid, the blade is not released. After pushups moisture is distributed on it unevenly and its content in General is more than 120% If after applying the second working solution of the canvas is pressed, it will allow anyway to add (enter) in the canvas about 10% of the second working solution, which is very little to interact both working solutions and eliminating the non-uniformity of processing. For this reason, after applying the second working solution on leaf moisture is removed from it, thanks to which is added a quantity of the working fluid commensurate with the applied first to the canvas, and maximum moisture content in the fabric, in which the moisture dripping from the blade. Such loading solution, d is icepay mobility of moisture on the cloth and improves the conditions of transport work between the two solutions, especially the absorption of the working solution and fiber, easier than following the application of solutions stage steaming.

The lock method of dyeing textile fabrics in which it is first covered with a first working solution, partially dried and finally passed through an intermediate device to cover another working solution is known [3] But here, anyway, is not about dyeing with salt and related problems. Known design may not be taken into account due to the necessary large amount of the applied solution. Wedge-shaped device for applying the solution includes two located at the same height of the roller, between which the cloth is passed from the top down, and before pass between the rollers, the fabric passes through the working solution, standing in Klenova the gap between the rollers at a slight height. So platens should seal the gap at the bottom, they should with a certain linear force to press each other, allowing the cloth to force strongly pressed and a large flow rate of the working solution is in principle impossible.

The closest to offer the organic salt with subsequent extraction of up to 85% humidity and water impregnation staining solution [4]

The disadvantages of this method are considerable losses of dye and the lack of uniformity of color on the material.

Numerous experiments established that the loss of dye during the dyeing of cotton fabrics direct (substantive) dyes according to the invention is reduced and increases the output of the dye up to 40% thereby reducing pollution entering the waste water with heavy metals. When using reactive dyes loss they still were so high that the entrance way is almost never used. It is particularly recommended to maintain the temperature of both the applied solutions are approximately the same, because thereby an optimum interoperability solutions between themselves and the solutions with the web.

The objective of the invention is solved in its constructive aspect of using the proposed facility.

Wedge-shaped device for applying solutions are known [5] But the invention is not wedge-shaped device application solutions as such, but in combination impregnating the device with wringer and impregnating the device with a very low content of the solution in icesto solution, evenly it is distributed. Device for applying solutions erased described in the patent [6] Here the blade goes through a full working solution tank, then is deflected upward and passed through the gap between two horizontal, non-rotating, established motionless against each other, inflatable sleeves, where the excess solution is erased.

The drawing shows the setup for the dyeing of flat woven fabrics of cotton fibers direct dyes. Canvas 1 first passes through the first causing the device formed by the management, which includes 2 bath for impregnation capacity (if the fabric width 1.80 m) 30-60 l salt solution 3, and through which the specified image through a guide roller 4 is skipped canvas that is then directed vertically upwards in the dewatering gap 5 between the squeezing roller pair 6 and 7 it was pressed to a moisture content 70-60% of the weight per surface unit of dry leaf 1. Hydrated so the canvas and then through a guide roller 8 is directed vertically downwards and reaches the second device for applying the solution, which is a conical tank 9. Conical clearly the designs are flat and slightly skosana set against the canvas, i.e., in the course of its movement converging. At the ends of the walls 10, 11 at the edge of the blade 1 are connected to each other so that they form vertical, cone-shaped container 9, which may be selected to a small level to be filled with working fluid 12. On the lower end of the container 9 into the whole width of the fabric 1 has a longitudinal open notches 13, 14, which are placed in the inflatable sleeves 15, 16. Sleeves 15, 16 in a floating state adjoin on both sides of the fabric across its width with small, evenly distributed pressure and close the tank bottom. Beyond the edges of the fabric 1 of the sleeves 15, 16 are bonded directly to each other and seal the gap in these areas. The cloth 1 is pulled through the gap 17 between the arms 15, 16. When it soaked the cloth in the tank 9 working solution 12, in this embodiment, representing a dye solution of direct dyes are removed to define the pressure in the sleeves 15, 16 total moisture. This is the total moisture content is in the range of about 100-200% i.e. in the V-capacity of the coating solutions is added once again, this amount of working solution in comparison with applied in management. The filling level of the tank 9 is maintained very low. When the fabric width of 1.80 m and soutwest several meters of fabric 1 and the solution was quickly spent. For this reason, the working solution 12 is constantly updated through the input device 18 and its level is kept constant or slightly below. Significant changes in the concentration of the working solution of 12 due to the fact canvas 1 working tools cannot occur. With the exception of minor limit gatherings length of the order of 3 to 5 m, the canvas is painted along the entire length evenly. The thus treated cloth 1 immediately enters zapasnoy camera (zelnik) 19 and finally, consisting of several branches of the flushing device 20.

The method is illustrated by the following examples of its implementation.

Dyeing with direct dyes.

P R I m e R 1.

a). Smooth fabric of cotton fibers with a weight per surface unit 200 g/m2in accordance with the existing technical conditions was processed in management without adding salt as the dye solution and then processed steam for 2 min in Zapadnoi camera: 3.0 ml/l wetting funds ("Apaven WS"); 2.0 ml/l polusovetskogo AIDS (Primasol NF"); 1.0 g/l of an oxidizing reagent (Ludigol"); 0.5 ml/l non-shuttable aeration means (Milfoam AR"), and 7.7 g/l direct croca speed of 30 m/min, the width of the textile fabric 1.8 m Turned out to be painted blue textile fabric with OSVETLENIE ends of a length of 100 m, which should have been used differently.

b). After that, the same textile fabric was painted on the device in accordance with the invention in the same blue color with the addition of salt.

Initially, the management was carried out applying the next brine: 3.0 ml/l wetting funds ("Apaven WS"); 3.0 ml/l polusovetskogo AIDS (Irgarol R"); 1.0 g/l of an oxidizing reagent (Ludigol"); 0.5 ml/l non-shuttable aeration means (Milfoam AR"); 30.0 g/l of sodium chloride, which was pressed to the moisture content of 85% Then textile fabric 1 was immediately sent to the cone dyeing capacity 9 and there was handled the dye solution, which had the following composition: 2.0 ml/l wetting funds ("Primasol NF"); 4,2 g/l direct dye "blue sulfenyl BL" 200% 1.2 g/l direct dye "blue cephalus 2RL" 165%

Sleeves 15, 16 were inflated by the pressure P 0,5 bar, so that was an additional coating solution 100% so that the total moisture content of the textile fabric 1 after the cone-shaped container 9 was 185% Loaded so those is the input branches of the washing device. Got the same blue color as in case (a), however, and the lighter color was only 5 m and, in addition, was able to carry out the work using, instead of 7.7 + 2.3 to 10 g/l of the dye, as it was in the case (a), only 4.2 + 1,2 5,4 g/l of the dye. By adding salt absorption dye has improved so that a much larger percentage of the applied dye can be absorbed by the fibers, or Vice versa, to obtain the same depth of color tones can do the job, using 37% less dye. Accordingly, reduced loss of dye and the content included in the waste water washed otherwise in the form of losses of hazardous substances, in particular heavy metal ions. Thus, in this sphere, and by reducing areas of lighter color is achieved improvements.

Dyeing with the use of sulfur dyes.

a). In accordance with the prior art smooth cotton fabric with a mass per surface unit 250 GM2a width of 1.8 m were processed at a speed of 45 m/min management the following dye solution: 3.0 ml/l wetting funds ("Apaven WS"); 2.0 g/l complexing substances ("Plextor Nug"); 14.6 g/l sego dye (Red Giresol ROT-BG); 20,0 g/l glucose (Maritza); 35,0 ml/l NaOH 29% 3.0 ml/l of sodium borate (Apotex EX); 3.0 ml/l wetting means (Santonin AMR); 0.5 ml/l non-shuttable aeration means (Milfoam AR), and pressed to a moisture content of 85% After steam treatment and rinsing turned grey with OSVETLENIE ends of a length of 100 m

b). The same textile fabric 1 was processed in management as a hydrochloric solution: 3.0 ml/l wetting means (Zapfen WS); 30.0 g/l of sodium chloride; 0.5 ml/l dehydrating means (Milfoam AR), and pressed to a moisture content of 85% Then textile fabric 1 was introduced into a cone-shaped container 9 for applying the solution and there treated as dyeing solution: 2.0 g/l complexing solution (Plextor NVG); 11.1 g/l sulphur black dye (Black Sulfa); 6.8 g/l sulphur brown dye; 1.4 g/l sulfur red dye (Red Giresol ROT-BG); 20,0 g/l glucose (Maritza); 35,0 ml/l NaOH 29% 3-0 ml/l of sodium borate (Apotex EX); 3.0 ml/l wetting means (Santonin AMR); 0.4 ml/l non-shuttable aeration means (Milfoam AR).

The coating solution was 100% so again the total moisture content of the textile fabric 1 amounted to 185% of which textile fabric 1 has done is this:

1. 50oC overflow

2. 70aboutWith overflow

3. 95aboutWith oxidize 15 ml/l textile auxiliary substances

4. 95aboutTo oxidize 1 g/l soda

5. 50aboutWith overflow

6. cold overflow

Turned out grey with lighter coloration of the ends of a length of about 5 meters From the consumed amount of sulphur black dye 25.4 g/l, on the one hand, and 19.3 g/l, on the other hand, when the same result colourings obtained savings dye, equal to 13%

Dyeing active dyes.

a). According to the prior art smooth cotton fabric with a weight per surface unit 180 g/m2, width of 1.60 m from a speed of 45 m/min management was treated as dyeing solution, which consisted of 2 parts and was applied using a dispensing pump 1:4 (1 part of the dye solution, 4 parts fixing solution) in the chassis for paint placowka: 3.0 ml/l of a wetting agent; 30.0 g/l active red; 20,0 g/l soda; 5.0 ml/l caustic soda 38, and push-UPS to 85% humidity. After steaming and washing was obtained fabric red OSVETLENIE all 100 m

b). The same textile fabric 1 was processed in management 10 the following fixing solution: 3.0 ml/l skachivat the ü in a container 9 for coating and there was impregnated with the following dye solution of 20.4 g/l active red. The total moisture content of the sheet is 1 amounted to 185% and with this humidity canvas was introduced in zapasnoy chamber 19. After this flushing device 20 were washed in six departments at the following temperatures: 1. 40oC 2. 95oC 3. 95oC 4. 95oC 5. 95oC 6. 60oC

Was red with OSVETLENIE about 5 m

Of the used number of active red 30 g/l, on the one hand, and 20 g/l with the other detected with equal results dyeing savings dye in 20%

1. Method for continuous dyeing cellulose-containing textile material by impregnation with an aqueous solution of the salt of an inorganic acid, followed by extraction and impregnation aqueous staining solution, characterized in that the extraction is carried out until 60 120% humidity, and after impregnation staining solution are repeated pressing of up to 100 to 200% humidity by passing the material through the clamping device.

2. The method according to p. 1, characterized in that when using a dye solution on the basis of direct dyes pre-pressing implement 70 to 90% humidity, and repeated up to 130 160% humidity.

3. The method according to p. 1, characterized in that when using the coloring rst 200%.

4. The method according to p. 1, characterized in that when using a dye solution on the basis of active dyes pre-pressing implement 70 100% humidity, and repeated up to 160 to 200% humidity.

5. Device for the continuous dyeing cellulose-containing textile material containing spaced along the direction of motion of textile fabrics each other two means for applying processing solution to the canvas, the first of which has a bath for impregnation and push roller pair, installed on the outlet of the bath, and second means for applying a processing solution has a cone-shaped container with a small liquid module, located above the pair of clamping elements arranged to pass transversely of the plane of motion of the blade, with the formation of a gap for the passage of the blade and socket for dosed supply of the processing solution in the tank as it flow, characterized in that, with the aim of improving the uniformity of application of the treatment solution and reduce its losses, the gap for the passage of the fabric between the clamping elements are in the form of slits, at least one of the clamping elements are hollow, has a flexible wall and from the Device under item 5, characterized in that the cone-shaped container, second means for applying a processing solution is placed against each other on both sides of the plane of the moving web of vertical walls connected at their ends and forming a vertical tank mounted above the clamping elements and having in the lower conical part of the gap for the passage of the canvas.

7. The device under item 5, characterized in that the first means for applying a processing solution on the textile fabric is made in the form of plyaski.

8. The device under item 5, characterized in that the elastic wall of the clamping elements in the form of two inflatable sleeves.

 

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Active monoazo dyes // 2287542

FIELD: dyes.

SUBSTANCE: invention relates to active dyes designated for staining or printing of hydroxy- or nitrogen-containing organic substrates. Invention describes novel monoazo dyes comprising sulfatoethylsulfonyl groups of the formula (1) given in the invention description, mixtures of dyes and their using for staining or printing of hydroxy- or nitrogen-containing organic substrates and in dyes for jet printing. Proposed dyes provide the enhanced light resistance of painting and mixtures of dyes comprising the proposed dye possess the enhanced dyeing capacity as compared with individual dyes.

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3 cl, 1 tbl, 6 ex

FIELD: textile, paper.

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11 ex

FIELD: chemistry.

SUBSTANCE: invention relates to novel asymmetrical and symmetrical active dioxazine dyes of formula (1), meant for dyeing and printing hydroxy- or nitrogen-containing fibre materials. (1), where Q1 is hydrogen, halogen or a radical of formula (2a) or (2b), T is a group which is reactive towards fibre -CO-(CH2)m -SO2-Y, where Y is vinyl or - CH2-CH2-U, where U is a group which is removable in alkaline conditions; m equals 2, 3 or 4. Disclosed also is a method of producing said dyes (1) and use thereof.

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10 cl, 4 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to novel reactive dyes for dyeing or printing on fibrous textiles. Described are reactive dyes of formula (1), where A is bivalent radical of formula , or , R1-R7, X, T, q, s, t, u assume values given in the claim. The invention also describes a method of producing said dye, water-based ink based thereon and use thereof.

EFFECT: disclosed dyes provide high resistance of the dye or drawing on synthetic nitrogen- or hydroxy-containing fibrous materials to washing and light, especially on polyamide fibrous materials.

14 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention can be used for dyeing or printing fibrous materials, which contain nitrogen atoms or hydroxy groups. Mixtures of dyes, containing, at least, one dye, colouring red, of formula (1) , at least, one dye from a group of formulae (2) and (4) and, at least, one dye from a group of formulae (3) , (5) and (6) .

EFFECT: invention makes it possible to obtain a composition of dyes, applied for two-coloured or three-coloured dyeing of fibrous materials, possessing high resistance to light and water, good colour saturation and high chemical activity.

11 cl, 7 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to fibre-reactive dyes for dyeing or printing textile fibre materials. Disclosed is a novel reactive dye of formula (1), where R1 is hydrogen, R2 is hydrogen, methyl or -CH2-SO3H, D1 is a radical of formula (2), D2 is a radical of formula (3aa), Y in D2 is vinyl, β is sulphatoethyl, Y in D1 is vinyl, β is chloroethyl, β is sulphatoethyl, k equals 1 or 2, m equals 2 or 3.

EFFECT: disclosed dye provides on cellulose or amide-containing fibrous materials when dyeing or printing a dye with high light fastness of 4-5 points, strength, and high colour depth while reducing concentration of dye.

7 cl, 5 tbl, 35 ex

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