EP0120894B1 - Vorrichtung zum kontinuierlichen färben von sich bewegenden materialien - Google Patents

Vorrichtung zum kontinuierlichen färben von sich bewegenden materialien Download PDF

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Publication number
EP0120894B1
EP0120894B1 EP19830903083 EP83903083A EP0120894B1 EP 0120894 B1 EP0120894 B1 EP 0120894B1 EP 19830903083 EP19830903083 EP 19830903083 EP 83903083 A EP83903083 A EP 83903083A EP 0120894 B1 EP0120894 B1 EP 0120894B1
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EP
European Patent Office
Prior art keywords
und
foam
der
die
fact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19830903083
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English (en)
French (fr)
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EP0120894A1 (de
Inventor
Theodore Davarakis
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT83903083T priority Critical patent/ATE18076T1/de
Publication of EP0120894A1 publication Critical patent/EP0120894A1/de
Application granted granted Critical
Publication of EP0120894B1 publication Critical patent/EP0120894B1/de
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0088—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor
    • D06B19/0094—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor as a foam

Definitions

  • the present invention relates to a device for dyeing continuously moving products, in particular textile materials, comprising a receptacle open at its upper part and containing organs for generating a dye foam, a guide device for bringing the foam into contact with the tinting products, and drive means for continuously scrolling the tinting products above the upper opening of the container.
  • Another device described for example in American patent US-A-3954404 comprises a tank for impregnating a strip of continuously moving fabric, this tank containing a coloring foam, a steam treatment chamber intended to fix the dyes and fabric wash tanks.
  • the quality of the foam is very variable depending on the level of the bath of raw materials used for making the foam and contained in the tank, and according to the temperature of this bath .
  • the foam is usually generated by a mixer placed inside the application machine on a product, and is transported through more or less long tubes to the point of application.
  • the bubbles tend to burst during transport and there is the appearance of areas in which the dye is more concentrated, which causes color irregularities or streaks on the treated product.
  • the tank generally contains pipes of heat exchangers which make it possible to bring and maintain this bath at a predetermined temperature.
  • the turbulence generated around and above these pipes modifies the quality of the foam and prevents the creation of a homogeneous foam.
  • the application of non-homogeneous foam causes an irregular dyeing and in particular generates clearly visible streaks on the surface of the treated product.
  • the foam is highly constrained through a narrow passage, in which the bubbles of this foam are crushed between a roller and the surface of the product to be tinted. Since compression cannot be uniform since it fluctuates with variations in the quality of the material treated or in the tension exerted on it by the mechanism for transporting this material, the dye generally does not apply uniformly, which negatively affects the quality of the finished product.
  • the present invention proposes to overcome the various aforementioned drawbacks and realizes a device making it possible to generate a very homogeneous foam and to apply this foam according to a principle of multilayer coating on a support to be tinted, which results in an effective, deep dyeing. and very homogeneous.
  • the foam guiding device comprises partitions arranged above the container containing the foam generating members, these walls defining at least two adjacent corridors which narrow from below above, and in that the container is provided with a device for regulating the temperature of the dye contained in this container.
  • the device 10 essentially comprises a chassis illustrated schematically by two supports 11 carrying a base plate 12, on which is mounted the container 13 containing the liquid dye used as raw material for generating the dye foam.
  • the container 13 consists of a tank 14, inside which is mounted a bottom plate 15 which delimits an upper zone containing the liquid dye 16, and a lower zone 17 in which are provided heating pipes 18 embedded by example in an oil bath maintained in permanent circulation by a pump through a closed circuit.
  • the outlets 19 of conduits for supplying the liquid dye 16 are arranged on the one hand the outlets 19 of conduits for supplying the liquid dye 16, and on the other hand an air injection nozzle 20 constituted by a tubular element provided with 'A large number of very small opening holes, which allows to inject, in a controlled manner, pressurized air into the liquid dye 16 to generate a foam which will develop above the surface of the liquid.
  • heating pipes immerse in the liquid dye, which has the disadvantage, as mentioned above, of causing undesirable turbulence.
  • the heating pipes are arranged in the cavity 17 below the bottom plate 15, which is heated uniformly by radiation or by convection.
  • This bottom 15 is brought to a regular temperature over its entire surface, which makes it possible to cause a gentle heating of the liquid contained in the tank 14, thus eliminating the zones of strong turbulence capable of modifying the shape of the bubbles and consequently the quality of the foam generated.
  • the ideal temperature is between 65 and 80 ° C and is preferably close to 71 ⁇ 2 ° C. At this temperature, the fixing of the dye, between 70 and 95%, is very good, which makes it possible to avoid any subsequent fixing treatment with steam.
  • the side walls of the container 13 extend upwards, on the sides by two vertical panels (not shown), forwards by an inclined wall 21 and rearwards by the drum 22 and by the flexible scraper 23 which takes bearing against the surface of the drum 22.
  • the inclined partition 21 carries, at its upper end, a front plate 24 bevelled at the front, the flat upper surface of which is in the horizontal plane tangential to the drum 22.
  • the pressure roller 26 is constituted by a cylinder with an axis 27 carried by two lateral flanges 28 integral a support 29 pivoting about an axis 30.
  • a height adjustment device comprising a vertical screw 31 whose head is fixed by a support 32 on a column 33, makes it possible to adjust the height of the pressure roller 26.
  • This roller is coated an annular layer 34 of an elastic material such as for example neoprene.
  • the pressing pressure of the pressing roller 26 on the drum 22 is precisely adjustable using the adjustment device comprising the screw 31, or by any other similar means allowing the same result to be obtained.
  • the height adjustment screw makes it possible to block the pressure roller in a determined position, for example by means of calibration gauges, with the aid of which the height of the slot formed between the drum 22 and the pressure roller 26 is measured. height of this slit depends on the thickness of the product treated and the more or less strong pressure that we want or can exert on the product.
  • the roller 26 can be driven or can rotate freely under the effect of friction. It is however essential that the drum 22 and the roller 26 have the same peripheral speed.
  • this tensioner consists of two jaws 39 and 40 connected by a threaded rod 41 secured to an adjustment nut 42.
  • this tensioner-grid assembly is mounted on two flanges 43 movable in height thanks to a sliding system comprising oblong slots 44 and rods 45 engaged in these slots. The assembly is supported by a transverse beam 46 supported by the columns 33.
  • partition walls 48, 49, 50, 51 and 52 In the space arranged above the level of the liquid in the tank 14, a level which is precisely controlled by an ultrasonic device 47 shown diagrammatically, there are a series of partition walls 48, 49, 50, 51 and 52 These partitions are rigidly held by supports 53 and 54 comprising a central rod and nuts engaged on this rod and the lengths of which are determined so as to ensure a precisely defined position of the above-mentioned partitions.
  • These partitions, the first two 48 and 49 of which are curved at their upper part to adapt at least partially to the curvature of the surface of the drum 22, are designed and arranged in such a way that the foam guideways that they define, for example, a width at their base which is substantially double their width at their upper part.
  • the width of the corridors at their top can vary from one corridor to the next. Since the absorption of coloring matter by the treated product is particularly important above the first guide lane, and decreases as the product advances in the machine because its porosities are gradually closed, it is advantageous to reduce proportionally the quantity of foam available in the lanes successive and increase the pressure in these lanes. This effect is obtained by placing the partition walls in relation to each other, so that their width at the base decreases in the direction of movement of the product (arrow A). The decrease ratio may for example be between 5 and 50%, but is preferably around 20%.
  • the width at the top of the corridors can be equal to half their width at the base.
  • the widths of the corridors at their top can be equal to a variable percentage of the widths of these same corridors at their base.
  • the width at the top of the first corridor can represent 80% of the width of this corridor at its base.
  • the width at the top of the second corridor can be equal to 70% of the width of this corridor at its base.
  • the proportion is 60%, for the fourth lane it is 50%, for the fifth lane it is 40% and for the sixth and last lane it represents 30%.
  • the foam generation system has been surrounded by a maximum of precautions so that this foam is homogeneous.
  • the container has a bottom plate 15 which allows uniform heating and suppresses the troublesome turbulence inside the liquid.
  • the level in the tank is precisely controlled by an ultrasonic device. which contributes to having a constant quality and good homogeneity of the foam generated.
  • the base liquor that is to say the liquid dye 16 contained in the tank 14, is constantly recycled and kept in circulation through the supply conduits, the outlets 19 of which open into the tank 14 and the flow conduit 55.
  • the partition walls 48, 49, 50, 51 and 52 restrict themselves upwards, which tends to constrict the bubbles of the foam and contributes, in a non-negligible manner, to further homogenize the foam near its application area.
  • the existence of a series of foam guide corridors allows application in several superimposed layers of the dye substance and very good penetration of the dye into the material to be tinted.
  • the strip 25, flowing in the direction of the arrow A is first subjected to a first treatment with the foam located in the corridor defined by the wall 52 and the front wall 21, then subjected to the action of the foam present in the guide corridor defined by the partitions 51 and 52, then to that of the corridor defined by the partitions 50 and 51, then to that contained in the guide corridor defined by the partitions 49 and 50, then to that of the guide corridor defined by the partitions 48 and 49 and finally that contained in the guide corridor defined by the partition 48 and the scraper 23.
  • the product in strip 25 or in the state of wire or occurring in any suitable form is subjected to a multilayer treatment, which makes it possible to obtain a high quality surface finish.
  • the upper ends of the partition walls are spaced a few millimeters from the bottom surface of the product. In this way, the foam is spread against this surface as with a spatula.
  • each color is fixed at least 75% at the outlet of the corresponding device. However, if it is desired to obtain combinations of colors, it is sufficient to lower the temperature and to fix the colors by a steam fixing device, placed in the extension of the tinting machines.
  • the container 13 has at its base a conduit 55.
  • the drum 22 rests on a support drum 9 preferably provided with a coating with a high coefficient of friction, such as for example neoprene.
  • these devices are preferably equipped with an automatic command and control device for the foam generator.
  • Three parameters are essential to this control: the pressure of the foam, the volume of air injected and the speed of movement of the product. Regular measurement of the pressure of the foam and the speed of travel of the product and an automatic interpretation of the results of the measurements by a central computer make it possible to automate the injection of air into the injector 20 and to control so specifies the generation of foam according to the effects that one wants to obtain.
  • FIG. 3 In the case of non-porous products, such as for example thick paper, which one wishes to tint in two colors, it is advantageous to use an installation as shown diagrammatically in FIG. 3. It comprises two devices 101 and 102 such as those described above with reference to FIGS. 1 or 2, each working with a color.
  • a roll of paper 103 is carried by a support 104 of a type known per se, unrolls a strip of paper 105 stretched between a drum 106 and a drum 107.
  • the two drums 106 and 107 cooperate with a third drum 108 to tension a rotary grid 109, for example made of polyester or any other suitable material, which serves as a support for the paper strip 105 during its journey over the dyeing devices 101 and 102.
  • a rinsing installation 110 and a drying ventilation 111 are arranged on the return route of the grid 109.
  • a pressure roller 112 rotating at the same speed as the drum 107, applies the paper to the peripheral surface of this drum. Ramps of heating by infrared radiation 113 ensure a pre-drying of the tinted paper before it passes through a drying device (not shown).
  • the foam bubbles can burst and release their coloring substance on contact with the product to be treated, as well as the air they contain.
  • they are caused to expand by heating the product with the aid of a heating plate 114 arranged parallel above the strip 105. This plate is placed above and at the front of the dye 101 and 102 and causes the paper to preheat.
  • FIG. 4 illustrates a device in which the grid 35 of FIG. 1 is replaced by a cylindrical grid 201.
  • a strip of product 202 comprising a flat base and bristles erected vertically with respect to this base, is stretched between two drums 203 and 204 and the cylindrical grid 201, and passes over foam guide corridors 205,206,207 and 208. Thanks to its passage on the rotary grid 201, the bristles of the product 202 open and allow good penetration of the foam, and therefore a deep dyeing and quality of the product. This technique will be used advantageously for carpets or fabrics of the velvet type.
  • Fig. 5 illustrates an advantageous improvement to avoid the formation of foam accumulation zones at the top of the guide corridors.
  • This improvement consists in making partition walls 301 with double walls 302 and 303, which define a suction channel connected to a suction duct 304, through which the foam present in the guide passage is recycled. By this process, a slow and permanent circulation of the foam is created, the homogeneity and quality of which are guaranteed by constant regeneration. These channels also make it possible to evacuate the air released by the bursting of the bubbles.
  • a complex installation may include several stages of dyeing carried out using one or more of the devices described above.

Landscapes

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

Claims (36)

1. Einrichtung zum Färben von kontinuierlich durchlaufenden Produkten, vor allem textiler Art, bestehend aus mindestens einem Behälter, der in seinem oberen Teil offen ist und Organe enthält, die einen Färbeschaum erzeugen, aus mindestens einer Führungsvorrichtung, um den Schaum mit den zu färbenden Erzeugnissen in Berührung zu bringen, und aus Antriebselementen, um die zu färbenden Produkte kontinuierlich über die obere Öffnung des Behälters zu befördern, dadurch gekennzeichnet, dass die Führungsvorrichtung für den Schaum aus Trennwänden besteht, die sich über dem behälterbereich befinden, der die schaumerzeugenden Organe enthält, wobei diese Zwischenwände als Trennung von mindestens zwei aneinandergrenzenden Kammern dienen, die sich von unten nach oben verengen, und dadurch, dass der Behälter mit einem Temperaturregler für die sich in diesem Behälter befindliche Farbe ausgestattet ist.
2. Einrichtung gemäss Anspruch 1, dadurch gekennzeichnet, dass die trennenden Zwischenwände mindestens teilweise geneigt sind, und zwar in Durchlaufrichtung der zu färbenden Erzeugnisse.
den Führungskanälen für den Schaum befindet und dazu dient, gegen die Unterseite des zu färbenden Produktes zu drücken, welche dem Schaum nicht ausgesetzt ist.
EP19830903083 1982-10-12 1983-10-11 Vorrichtung zum kontinuierlichen färben von sich bewegenden materialien Expired EP0120894B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83903083T ATE18076T1 (de) 1982-10-12 1983-10-11 Vorrichtung zum kontinuierlichen faerben von sich bewegenden materialien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5960/82 1982-10-12
CH596082 1982-10-12

Publications (2)

Publication Number Publication Date
EP0120894A1 EP0120894A1 (de) 1984-10-10
EP0120894B1 true EP0120894B1 (de) 1986-02-19

Family

ID=4302151

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Application Number Title Priority Date Filing Date
EP19830903083 Expired EP0120894B1 (de) 1982-10-12 1983-10-11 Vorrichtung zum kontinuierlichen färben von sich bewegenden materialien

Country Status (4)

Country Link
EP (1) EP0120894B1 (de)
JP (1) JPS59502149A (de)
DE (1) DE3362197D1 (de)
WO (1) WO1984001588A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752690A (en) * 1986-08-11 1988-06-21 Coulter Electronics, Inc. Method and apparatus for detecting incongruities, such as air bubbles, in fluid material
US5219620A (en) * 1991-07-25 1993-06-15 E. I. Du Pont De Nemours And Company Method and apparatus for foam treating pile fabrics

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1499797A (fr) * 1966-11-16 1967-10-27 Fuji Photo Film Co Ltd Méthode d'enduction
US4023526A (en) * 1976-03-25 1977-05-17 Union Carbide Corporation Apparatus for application of foam to a substrate
SE416970C (sv) * 1977-01-03 1985-03-18 Inventing Ab Sett for att behandla eller bestryka ytor, exempelvis lopande materialbanor
US4343835A (en) * 1980-12-17 1982-08-10 Union Carbide Corporation Method and apparatus for treating open-weave substrates with foam

Also Published As

Publication number Publication date
DE3362197D1 (en) 1986-03-27
JPS59502149A (ja) 1984-12-27
EP0120894A1 (de) 1984-10-10
WO1984001588A1 (en) 1984-04-26

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