DE2708000A1 - PROCESS AND DEVICE FOR COLORING TEXTILE MATERIAL - Google Patents

Description

PATENT LAWYERS DR. DIETER V. BEZOLD DIPL. ING. PETER SCHÜTZ DIPL. ING. WOLFQANQ HEU8LER

MABIA-THCBBBIA-STBASSB BS POSTPACB MMM

D-SOOO MUBNCHEN 86 TKLSPON Ο8 · / «7β» Οβ TBLKX osaese TBLBOBAMM SOMBBZ

RCA 70286 /Dr.v.B/Ro. US Ser. No. 661 396 Filed: February 25, 1976

RCA Corporation, New York, NY (V.St.A.)

Method and device for dyeing textile material.

The present invention relates to a method for dyeing textile material, in which a dye retainer is applied to a surface of the textile material, to which A colorant is applied to the surface of the color retainer and the colorant is then fixed on the textile material while removing the color retainer.

In a process known under the name "TAK process" and with the associated dyeing machines in US Pat. 3 683 649 and 3 800 568 known textile dyeing processes are droplets of dye liquor on the surface of a to be dyed Textile material web, distributed like a tufted or needle-punched carpet and you get a repeat-free pattern uniform irregularity that does not look like a

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looks like a fetching or regular pattern. Dyeing process of this Art are referred to as "space dyeing processes".

There are also dyeing machines known in which a dye retainer on the surface of the textile material with a Colorant is provided so that the latter is fixed on the textile material when removing ues color retainer.

In another space dyeing process, "dyes of different colors are randomly applied along a strand of yarn this applied. A needle-pile carpet is then made with a number of spools of yarn dyed in this way, in which the colors appear in a random distribution. This procedure is quite complicated and expensive, so that too The end product becomes considerably more expensive. The method mentioned first is intended to achieve that with the multicolored yarn Imitate the effect, but in practice the tone gradations are a bit harder, i.e. more contrasting, than desired. With all With this method one wants to achieve a multi-colored finish of a textile material which is irregular and free of repeats and yet a certain evenness with gradual transitions between the different colors looks soft, uninterrupted and appealing to the eye.

The present invention is based on the object of a method for dyeing textile materials, in particular sheet materials such as pile carpets and the like. Specify that is inexpensive and provides an appealing color scheme.

The invention is also intended to provide a device for carrying out such a method.

The invention is based on a method for dyeing textile material, in which on a surface of the textile material a color reservation agent is applied is, a colorant is applied to the surface of the color retainer, and the colorant, i.a. under Removal of the color retainer on the textile material

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is fixed. According to the invention, the paint retaining agent in viscous form as a film, sheet or web with essentially uniform thickness and a substantially blotchless or flawless surface and the colorant is applied in liquid form to the surface of the color retainer dropped on that the liquid colorant with respect to the surface of the textile material before and during, i the fixation spread or spread.

A device for carrying out such a method contains a device for applying a color retainer to the surface of the textile material, a device for applying the colorant to a surface of the Dye retainer, and a device for fixing the dye to the textile material by, inter alia, removing the dye retainer. According to the invention, the device is for Application of the color retainer formed such that it forms a vitreous path on the surface of the textile material substantially uniform thickness of the color retainer is applied and the device for applying the colorant is designed so that the colorant is applied in liquid form to the surface of the glassy color retainer, in particular dripped on.

In the following, exemplary embodiments of the invention are explained in more detail with reference to the drawing.

Show it:

Fig. 1 is a schematic side view of a device for continuous dyeing of a textile material web which is constructed and operating in accordance with the invention;

FIG. 2 is a sectional view, on a larger scale than that shown in FIG. 1, of a paint retainer application device of the device according to FIG. 1, and FIG

FIG. 3 is a sectional front view of the paint retainer application device according to FIG. 2, from which in particular

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the type of distribution of the paint retainer on a tub can be seen .

The textile material which is dyed in the device according to FIG. 1 can be, for example, a tufted or needle-punched carpet . The carpet web first runs through an ink pad or roller skid dyeing device 12, which is a conventional device for applying a uniform base color to the textile material 10. The use of the dyeing device 12 for dyeing the carpet web is optional, so it is not a necessary prerequisite for the invention. As can be seen from the following, it is not necessary to apply a base color to the textile material 10 in particular . By means of the dyeing device 12, however, the carpet can be given a more pronounced, attractive, uniform dyeing which is useful for certain color effects. The textile material 10 is transported in the direction of an arrow 14 by a driven roller 16 and further rollers, not shown, in the device. These transport devices are conventional. The textile material 10 then also runs through an optional device 18 used for printing. With this device, a basic pattern can be printed on the textile material, in particular the carpet web, in order to achieve a wide variety of color effects. Both the printing device 18 and the coloring device 12 only produce a coloring that supports the special color effects produced by a device 20. In the device 20, which essentially forms the subject of the invention, colorant is applied to the textile material 10 in such a way that an effect comparable to that of space dyeing results, the costs being lower than that of space dyeing yarns and the tinting high is softer and more subtle than can be achieved with the well-known TAK process.

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The textile material 10 runs up in the device 20 a substantially horizontal path under a paint restraint-to carrying device 22 and a TAK-FärLaschine 26 through. The applicator 22 is shown in FIG. 2 and in greater detail, it provides an uninterrupted, continuous one Foil or sheet of a suitable paint retainer.xttel 24, such as a vegetable gum (gum). The paint retainer 24 has a syrupy, viscous consistency with a viscosity that is preferably on the order of 400 to 4000 centipoise lies. The color retention means 24 is applied to a pile or buss'helige surface 25 ctes from a Haaelflor carpet consisting of assumed textile material 10 applied, the pile side of which faces the color retention means. The path from the ink retention means 24 has an essentially flawless and stain-free surface and is when applied to the textile material over its entire width (vertical to the plane of the drawing) continuously while the textile material 10 runs in the direction of the arrows 14.

The textile material 10 is guided in such a way that it assumes a substantially horizontal position before the ink retainer 24 is applied and the textile material coated with the dye retainer retains this position while it runs through the TAK dyeing machine 26. The TAK dyeing machine 26 can be of a conventional construction, as described in the patents mentioned at the outset . In it, in particular, droplets of one or more dye liquors are applied to the textile material 10, in particular the tufted or needle-punched carpet, in a uniform, but irregular, repeat-free pattern. The textile material 10 then passes through a downwardly hanging loop 28 following the roller 16 and then back up into a conventional steaming device 30. In the steaming device 30, the colorant applied to the textile material is applied to the textile material in a conventional manner

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fixed and the color retention agent with which the textile material had been coated in the device 22, washed away.

The TAK machine 26, shown only schematically, contains several colorant application devices 32 and 32 *, the color liquors of the same or different color in the form of Droplets 34 or 34 'on the carpet web passing below raise. Since the construction of TAK machines and damping devices are known, a further explanation can be dispensed with here.

The paint retainer applicator 22 operating and constructed in accordance with the invention delivers the web the dye retainer in a unique arrangement with respect to the dyeing machine 26 and thereby provides better color effects on the textile material 10 than with the known ones Facilities could be achieved. The paint retainer applicator illustrated in greater detail in FIG. 2 includes a in the width direction (perpendicular to the plane of the drawing) elongated trough 36, which over the entire width of the web from the Textile material 10 is sufficient. The trough 36 has a first, channel-like shaft 38 which forms a first storage container for paint retaining means 40. The paint retainer 40 is a suitable viscous vegetable gum with long chain molecules and a syrupy consistency so that it does not separate easily when allowed to flow. This is an essential property of the paint retainer. The viscosity of the gum is preferably in the range between 400 and 400 centipoise, but values around are preferred about 1050 centipoise (cP). The paint retainer can be made from a vegetable gum with any conventional additives consist, such as borax, acid, ground beans or a granular material. In the preferred embodiment, the gum with 2 grams per liter to 15 grams per liter, the remainder being water. The gum can be manno-galactan vegetable rubber. Of course, the expert also knows

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other paint retainers which have the required viscosity and consistency and are therefore also used can. The paint retainer 40 is supplied to the chute 38 via inlet lines 42. Well 38 and inlet conduits 42 are best seen in FIG.

As shown in Fig. 3, the paint retainer is made from vegetable gum and the like is stored in a storage container 44 and is removed from this via a pipeline 46 and a valve a Y-shaped branch 50 supplied. Junction 50 is connected to conduit 46 and distributes the paint retainer evenly, as indicated by arrows 52 and 54. The branching becomes the color retainer fed to a further pipeline 56 at two connection points 58 and 60. The connection points 58 and 60 have the same Distances from the opposite ends of the conduit 56, namely the connections 58 and 60 are respectively in the Midway between one end of the pipe 56 and its center. This type of connection is intended to be essentially uniform Distribution of the relatively thick and viscous paint retainer in the shaft 38 can be achieved. The pipeline 56 has a central outlet opening 62 and two end openings 64 and 66. Through these three openings 62, 64 and 66, the paint retaining means becomes 40 distributed essentially uniformly over the width of the shaft 38 in the direction of the arrows 68. This is for that Essential to the present invention: Would the thick paint retainer 40 only be at one end or any other fed to a single point of the shaft 38, then the paint retainer would tend, because of its relatively high viscosity, to to overfill the shaft at this point and not flow properly to the other parts of the shaft. Such uneven filling must be avoided for reasons that will be discussed below. Due to the uniform Distribution of the color retainer over the openings 62, 64 and 66, the outflowing paint retaining agent 24 can flow together and form a body with the substantially identical

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form a shaped level. The paint retaining agent 40 flows under the action of gravity through the pipeline 46 and the Valve 48. However, the paint retainer can be conveyed through line 46 in other ways, such as under pressure.

The shaft 38, as shown in FIG. 2, is essentially a elongated, U-shaped channel. The one upwardly leading wall 70 of the channel 38 ends in a longitudinal direction of the channel extending tube 72 extending between two side walls 74 and 76 (Fig. 3). The tube 72 extends horizontally and parallel to the horizontally arranged shaft 38, so that the paint retaining means 40 evenly under the action of gravity flow via the tube 72 into a second shaft 78. can. An upwardly leading rear wall 80 of the tub 36 and the Side walls 74 and 76 extend so far up that the paint retaining agent 40 cannot flow out.

The shaft 78 is formed by a trough which has a horizontal floor 84 and two connected to the wall 70 upwardly leading side walls is limited, which form the continuation of the side walls 74 and 76 of the tub 36 and with are connected to a front wall 88 which slopes forward and upward from the floor 84. Between the side walls 74 and 76 runs over the entire width of the trough 36 and parallel to the tube 70, a partition wall 90 which separates the trough 36 between the Wall 88 and wall 70 are divided into two shafts 78 and 92. The partition wall 90 is an L-shaped component with a lower, flat, horizontally extending limb 93 which projects parallel to the floor 84 in the direction of the front wall 88. Of the Leg 93 has a certain distance from the bottom 84, so ate the gum or the paint retaining means from the shaft 78 in the Shaft 92 can flow. The partition wall 90 also has an upwardly leading wall 91 which extends to approximately the same height like walls 74 and 76 above the level of the paint retainer overflow serving tube 72 is enough. The wall 91 is so high that the paint retaining means does not go over its upper edge

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can flow. The color retention means 40 can therefore only between the leg 93 and the bottom 84 of the shaft 78 in Gen Ccnacht 92 flow, as indicated by an arrow 94.

At a distance from and near crosswinds 7 * and 7C Two overflow lines 98 (one of which is in Fig. 2 is shown), which with a level oaer Γlüssiqkeitsstandsteuervorrichtung 97 as to uer uprightness una control of the level or status of the paint retention fluid in the shaft 92 cooperate. If there is too much paint retainer flows into the shaft 92, the excess is drained through the overflow lines 98. About unnecessary material losses avoid and adjust the level of the color retainer in. To keep well 92 essentially constant, the liquid level control device 97 is additionally provided. These contains a pipe 99, the open enue of which is at the level on which the paint retaining means 40 'are held in the well 92 should, is arranged. Compressed air is conveyed through the pipeline 99 in the direction of the arrows 100. The pressure in the Pipeline 99 therefore depends on whether the end of the pipeline 99 is blocked by the paint retaining means 40 ' or not.

Obviously, when the paint retainer fills well 92 and blocks the free end of tubing 99, it rises the pressure in the pipe 99. On the other hand, if paint retainer flows out of the well 92 and the free JJnue aer pipe 99 is released, the pressure in the pipe drops. The pressure differences in the pipe 99 are u perceived by a push button switch 102, which is an aie Blockage of the end of the line 99 and thus a corresponding increase in the level of the paint retainer 40 supplies an indicating signal to a conventional control unit 104. The valve 4b is then controlled by the control device 104 closed according to the signal from the pressure switch 102.

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ORIGINAL INSPECTED

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The supply of further paint retainer into the shaft 38 is thereby interrupted until the level of the paint retainer has sunk so far in the shaft 92 that the former end of the pipeline 99 opens again to the atmosphere and the pressure in this line is reduced, which in turn is perceived by the switch 102 that controls the control unit 104 then causes valve 48 to reopen and allow the supply of paint retainer 40.

In the shaft 92 at the inclined front wall 88 there is a take-up roller 106 for the paint retaining means. The pickup roller 106 has a cylindrical, smooth surface and extends the width of the tub 36 between the walls 74 and 76, as can be seen from FIG. When the roller 106 is rotated in the direction of arrow 10B, the gum paint retainer remains hang on the surface of roller 106 because of its sticky consistency. Through the above described According to measures according to the invention, the color retention means 40 ' the roller 106 has a smooth and glassy looking surface 110 as can easily be seen by inspection. the Level control device 97 and overflow lines 98 can lead to a certain amount of bubbles forming in the paint retaining means lead, but the resulting bubbles are very small, generally on the order of about 1.6 now and below, and practically cannot detract from the desired results of the process.

A doctor blade is attached to the wall 88 outside the shaft 92. The doctor blade 112 extends obliquely upwards and backwards towards the Vvalze 106 and rests in a sliding manner on the front and upper part of the surface of the roller 106. The doctor blade 112 ni ^r -unt the at the surface of roller 106 adhering color jerk holding means and separates it from the roll. Under the action of gravity, the ink retainer then slides down in the form of a continuously flowing path on the inclined surface of the doctor blade. The squeegee 112 is

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a conventional device, e.g. Are made of fiberglass. The textile material 10 runs horizontally and is facing with its pile side of the web of the dye retainer 24 when this is applied. The textile material is pulled over a roller 114 running along with it. The textile material 10, the pile side of which is coated with the dye retainer, is then passed through the TAK machine 26 (Fig. 1) out, as already explained above.

The purpose of the applicator 22 is to have a smooth and glassy color in the body of the paint retainer 40 ' to produce flat surface 110 while the paint retainer is removed from the pan by roller 106. the A smooth glass surface is produced by first filling the shaft 38 with paint retainer 40 and then filling it then allowed to flow into the duct 78 via the tube 72 evenly along its length. Because of the thick, rubbery and In a sticky consistency, the paint retainer tends to stand taller on tube 72 and wall 70 than it does here remote partition 90. The flow of the paint retainer into the well 78 also causes ripples in its surface and irregularities which must be removed. The removal of these surface irregularities of the paint retainer and the maintenance of a predetermined level is accomplished by the partition 90, the overflow lines 98 and the level control device 97. The partition 90 prevents the paint retainer from flowing from the surface in well 78 directly to the surface in well 92. as As a result, all of the paint retainer that enters the well 92 flows upward from the bottom of this well. This ensures a minimal reaction of the surface in the well 78 on the surface 110 of the paint retainer 40 'in the well 92. While the paint retaining agent flows under the leg 93 through into the well 92, it will too evenly distributed over its length. The current runs

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very gradually. The surface 110 of the paint retainer in well 92 becomes exceptionally smooth and has through the effects of partition 90, leg 93 and tube 72 a vitreous appearance.

The roller 106 is arranged at a certain distance from the leg and the front wall 88 in order to provide further level compensation and to ensure a further smoothing of the surface 110. Since the level of the surface 110 is essentially is kept constant, the roller 106 takes a layer of Jju substantially uniform thickness of the ink retainer when running at constant speed. The layer of paint retainer, which adheres to roller 106 is preferably about 6 mm (1/4 ") thick.

3 2 by means of the doctor blade 112 can, for example, be about 960 cm / r (300 cm per square yard). The roller 106 can for example have a diameter of about 15.25 can and with run at a speed of about 28 rpm. The speed of the roller 106 is preferably about 20 to 31 rpm and is running with such a peripheral speed which corresponds to the transport speed of the textile material 10. the Surface 110 is smooth, glassy and even, so that the layer of your viscous paint retainer that adheres to roller 106 adheres, is smooth everywhere. and is uniform. This smooth, uniform layer is removed by the doctor blade 112 and the resulting cohesive film or web from the paint retaining means 24 is continuously transported onto the Textile material 10 transferred.

It is essential to the present invention that the thickness of the web of ink retainer 24 be uniform throughout is. Any change in thickness, such as caused by large bubbles or differences in level of surface 110 during the Process can be caused, lead to fluctuations in the thickness of the color retainer applied to the textile material 10 and can lead to differences in the color effect

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to run. Such differences in thickness and color fluctuations are undesirable. The entire surface of a floor covering is usually exposed to the eye of a beholder practically at the same time. Any small changes in color to darker or lighter shades are easily recognizable and highly undesirable. Although the coloring is irregular in tint in smaller areas, the irregularity is macroscopically uniform and gives a uniform variation in tint and a heather-like appearance. Even small fluctuations in the color shade can be perceived without difficulty , even for the untrained eye.

When the droplets 34, 34 'of the dye liquor or dye liquors strike the textile material 10 coated with the dye retainer, the dye retainer distributes the dye liquors and prevents them from immediately penetrating the textile material. The droplets can therefore spread thinly, but they also produce a more concentrated color effect where they hit the material. This avoids the strong contrast or the hardness of the coloring, which are typical for the known coloring processes of this type. How much time is allowed to pass before the textile material is fixed in the damping device 30 depends on the overall desired effect. A wide variety of color effects can be achieved after the web of color retainer 24 is applied as a uniform film with a smooth surface throughout.

In the embodiment described, there are essentially three sequential container areas or wells 38, 78 and 92 for converting a viscous, slow flowing material (paint retainer 40) into a relatively calm body of material (paint retainer 40 ') with a controlled surface area .

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Of course, the facility, especially the application device 22 according to FIG. 2 in the most varied Modify way to get the desired effect achieve, i.e. a mass of color retention agent with glass smoother Surface and controlled level. In particular, aas color retention agent can be added to the Feed the shaft and the tub and maintain the level in another way. E.g. if you know the transport speed the paint retainer assembly 24 provide a suitable paint retainer feed mechanism; the uas color retention agent so automatically in uen Shaft 31 feeds, if necessary ate on the level control device 97 and / or the overflow pipes 99 can be dispensed with. Such modifications are generally jeuoch more complicated and expensive.

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Claims (11)

Claims 1.) A method for dyeing a textile material, in which a color retainer is applied to a surface of the textile material, a colorant is applied to the surface of the color retainer, and the colorant inter alia is fixed on the textile material with removal of the dye retainer, characterized in that the dye retainer is in viscous form as Web of substantially uniform thickness and substantially flawless surface is applied to the surface of the textile material, and that when the colorant is applied in liquid form to the dye retainer with which the surface of the textile material is coated is applied, that the liquid colorant is distributed with respect to the surface of the textile material. 2.) The method according to claim 1, characterized in that the coating of the textile material with the color retainer and the application of the liquid colorant take place continuously. 3.) The method according to claim 1 or 2, characterized in that when applying the liquid Colorant Droplets of liquid colorant are dispersed on the coated surface. 4.) The method according to claim 1, 2 or 3, characterized in that when applying the paint retaining agent continuously a web of the viscous paint retaining agent is formed and the continuously formed web is applied to the textile material. 5.) Device for dyeing a textile material, with a device for applying a color retainer to a Surface of the textile material and for applying a color 709835/0926 ORIGINAL INSPECTED means on a surface of the color retainer, as well as a device for fixing the colorant on the textile material by, inter alia, removing the color retainer , characterized in that the device for applying the color retainer contains a device (Fig. 2) which on the surface of the textile material a glassy web of substantially uniform thickness of the viscous paint retainer, and that the device for applying the coloring agent includes an arrangement for causing the coloring agent to fall in liquid form onto the vitreous surface of the paint retainer. 6.) Device according to claim 5, characterized in that the device for applying the liquid colorant contains an arrangement (32, 32 ') which emits the liquid colorant in the form of droplets (34, 34'). 7.) Device according to claim 5 or 6, characterized in that the device for applying the paint retainer has a tub (36), an arrangement connected to this (44, 46, 48, 50, 56) for continuously feeding viscous paint retainer into the Tub, an arrangement (70, 90) located in the tub, which divides it into at least three compartments and gives the surface of the paint retainer (40 * ) in one of the compartments (92) a flat, smooth consistency, a roller arrangement with an elongated rotating Roller (106) located in one of the compartments and removing the ink retainer therefrom , and a doctor blade assembly (112) coupled to the roller and the ink retainer from the roller as it rotates in the form of a web for application on the surface of the textile material (10) decreases, contains. 8.) Device according to claim 7, characterized in that the longitudinal axis of the roller (106) runs parallel to the surface of the glass-smooth paint retaining means (40) . 709835/0926 9.) Device according to claim 7 or 8, characterized characterized in that the tub (36) is provided with a level control device (97, 98) which controls the level of the dye retainer in one of the compartments is kept substantially constant. 10.) Device according to one of claims 5 to 9, characterized by a transport device (16, 114) the fabric under the device (22) for applying the web of dye retainer and device (26) continuously transported along a substantially horizontal path for applying the liquid colorant. 11.) Device according to one of claims 5 to 10, characterized in that the textile material has a pile and that the paint retaining agent is a vegetable gum with a viscosity in the range of about 400 up to 4000 cP. 7098 3b / 0926