DE3043468A1 - METHOD FOR CONTINUOUSLY APPLYING A TREATMENT SOLUTION TO A FABRIC RAIL AND DEVICES FOR CARRYING OUT THE METHOD - Google Patents

Description

The invention relates to a method for continuously applying a treatment solution, for example one Dye solution, on a continuously moving web of fabric, especially for a subsequent heat treatment of the foamed material web. It also relates to devices to carry out the procedure.

The processes for treating textiles, for example textile webs of material, can be roughly divided into pretreatment processes including desizing and bleaching on the one hand and finishing processes including of dyeing and finishing on the other hand. Here, a treatment solution is applied to the fabric web and this then subjected to a heat treatment. The treatment agent can be used in the pretreatment, for example caustic alkali or a bleaching agent, as well as a color when dyeing or a finishing agent when finishing. To transfer the Treatment agent on the fabric web, for example, either a transfer paper is used or the fabric is soaked with a treatment solution. Because of the effort the use of transfer paper is limited to very expensive treatment agents. Generally this will Treatment agent is therefore applied to the fabric web by soaking, e.g. padding.

When continuously soaking a (essentially endless) web of material with a treatment solution, in general an excess of the latter is needed to apply a sufficient amount of the solution evenly to the fabric. Of the Excess of the respective treatment solution and / or des

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Solvent must be removed from the fabric web before the subsequent heat treatment. That in general Used instant drying requires very large amounts of thermal energy. To reduce energy consumption were for example already vigorous squeezing to squeeze the solution and / or the solvent out of the Panel used. However, only a certain part of the treatment agent can be squeezed out of the material web remove, so that considerable amounts of the solution and / or the solvent can hardly be removed (mechanically). On the other hand, if the treatment agent is not applied in excess to the fabric, its distribution can uneven in the fabric and the corresponding treatment become unsatisfactory.

The invention is based on the object of creating a method and devices for performing the method, with the help of which a treatment solution is to be applied to a continuously conveyed web of material in such a way that it is straight the amount of treatment agent necessary and sufficient for a uniform effect in the subsequent heat treatment gets onto the fabric web without an excess of the treatment solution and / or the solvent would be removed from the treated fabric web. The solution according to the invention for the method is that the treatment solution in the form of foam on the fabric web in a necessary for a subsequent heat treatment and sufficient amount without excess treatment solution and / or any to be removed prior to the heat treatment Solvent is applied.

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In essence, the invention consists in a treatment solution or a solvent before application to the To foam web of fabric and the foam in a predetermined necessary and sufficient amount of treatment agent to be applied evenly to a continuously running length of fabric « A device for carrying out this method is characterized by one in a foam generator foam container storing foam of the treating solution; Guide rollers for continuous guidance the web of material through the foam container and for foaming when the web of material passes through the container; and means for controlling the amount of foam adhering to the fabric web when it is being led out of the foam container. This can be done, for example, by adjusting the width of the opening at the material outlet of the foam container or by stripped a pair of cover plates arranged on both sides of the material outlet to a certain predetermined thickness will.

Another device for performing the invention The method is characterized by a material application roller that runs continuously in loose contact with the material web for applying a predetermined amount of the treatment solution in foamed form to the web of fabric; one Treatment template plate or »a foam template cylinder with a predetermined gap to the foam application roller for Transferring the foam to the roller as it rotates; and a foam delivery nozzle for successive * deliver foam of the treatment solution to the gap. While in the first-mentioned device, the foam layer when leaving the foam container or memory on a

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If a given layer thickness is wiped off, the foam is applied to the web of material in the other Device with the desired layer thickness from the outset by applying this to the foam when the foam is applied Foam application roller is specified «,

In one embodiment of the latter device, the distance between a fabric guide roller and the foam application roller is preferably adjusted so that the substance to be treated with continuous transport through a between The gap remaining between the rollers is to be fed through loosely. In a further embodiment, a pair is expedient of foam application rollers with a gap between them for continuous passage and both sides Coating the fabric sheet with the foamed treatment solution used, while so the fabric sheet in the former If the case is guided through the gap there with the help of a guide roller, in the other case it runs freely through the gap remaining between the two applicator rollers.

Based on the schematic representation of exemplary embodiments in the drawing, further details of the Invention explained. Show it:

a device in cross section in which the web of material is passed through a foam container;

a modified stock outlet for the device of Figure 1;

a cross section through a device with fabric guide roller and foam application roller;

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4 shows a device containing two foam application rollers with a web of material to be guided through the gap between the rollers; and

FIG. 5 shows a modification of the device according to FIG. 4,

In Fig. 1 and 2 , 1 denotes a foam container, Λ, a fabric inlet, 1 ₂ a fabric outlet, 2 a foam generator, 3 and 4 fabric guide rollers, 5 the fabric to be treated, 6 a pair of cover plates, 7 foam of a treatment solution, 8 a supply pipe for a treatment solution, 9 an air supply line and 10 a pair of nip rollers.

In FIGS. 3 to 5, 11 denotes a fabric guide roller, 12 denotes one fabric web to be treated, 15 a foam application roller, 14 a foam delivery nozzle, 15 a foam feed plate, 15 'the front end of the foam template 15, 16 foam, 17 a crank disk, 18 a connecting rod, 19 a foam cylinder and 20 a control screw.

The exemplary embodiments shown in principle in the drawings are explained in the following in order;

example 1

The foam container 1 provided according to FIG. 1 serves to store a foamed treatment solution, ie. a treatment solution in foam form and has a U-shape. A foam generator is attached to the bottom of the viewing container 1 scheduled. It is a device for producing shaving cream-like foams. One according to the invention too

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treating elongate fabric web 5 is continuously over a front of the fuel inlet Λ of the foam container 1 * disposed guide roller 4 and a near its base rotatably mounted within the container 1 the guide roller 3 through the container 1 guided The fuel inlet I ₁ and the stock outlet 1 ₂ are Made so tight that foam - at least to a disruptive extent - cannot escape from the container. The outlet port 1 ₂ of the container 1 also, the amount of adhering to the coming out of the container 1 fabric web 5 foam to control _β Referring to Figure "2 may be inserted into the outlet 1p opposing cover plates 6 serves ,, To the width of the outlet gap controllable To make, the individual plates of the pair of cover plates 6 should be adjustable in the direction of the arrow. In this way, the layer thickness of the foam adhering to the fabric web can be set very precisely in an excellent manner.

The foam 7 stored within the foam container 1 is produced with the aid of the foam generator 2. This The foam is produced by supplying a treatment agent, for example caustic alkali or dye dissolved in a solvent, generally water together with a foaming agent, for example soap or a surface-active agent, from a feed pipe 8 for the Treatment solution and at the same time in the supply of air from an air supply pipe 9. The in this way in the foam generator 2 foam formed is stored in the foam container 1. With the aid of the pair of nip rollers 10, the fabric web 5 squeezed with adhering foam layers, whereby at least a partial breakdown of the foam takes place, so that the defoamed solution can be absorbed in the textile material.

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The apparatus of Fig. 1 or 2 can be operated continuously in the following manner.

In the foam generator 2, a foam of a treatment solution with a pretreatment agent, a paint or a finishing agent is generated; the foam is introduced into the foam container 1; then an elongated web of fabric 5 to be treated is continuously guided over the guide rollers 3 and 4 through the foam container. The foam 7 adheres to both surfaces of the fabric web 5. After passing through the container 1, the fabric web 5 runs through the fabric outlet 1p with adhering foam out of the foam container 1 o The amount of foam adhering to the fabric is determined by adjusting the width of the opening of the Substance outlet 1 ₂ controlled. In particular, if a pair of cover plates 6 according to FIG. 2 is inserted displaceably into the stock outlet 1 ^, the width of the exit gap can easily be adjusted to the desired value. The amounts of foam carried along with the fabric 5 in this way and adhering to it are made to disappear by pressing in the pair of nip rollers and then absorbed in the fabric. When a porous, wettable and hygroscopic textile fabric is present, the foams collapse easily and are just as quickly absorbed into the fabric as a treatment solution.

According to the above, according to the invention, a necessary and sufficient for a subsequent heat treatment Amount of treatment solution evenly and safely on the entire surface of a continuously running web of material applied, which makes it possible to heat

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save energy. The fabric may be in the immediately following process step without the need for a squeezing off and soJrrtigen drying to heat treatment are supplied to the removal of excess treatment solution and / or solvent _o As the web is lead further based on a relatively long path through the Shaumbehälter, there is a correspondingly long contact time between fabric and foam, such that the adhesion of the foam to the textile material is ensured.

Example 2

According to FIG. 3, this exemplary embodiment includes a fabric guide roller driven by a motor (not shown) 11 for continuously guiding and transporting a to be treated. Panel 12; and one parallel to the guide roller 11 arranged foam application roller 13. This should be in loose contact with the one running over the roller 11 To rotate web of fabric 12 .be. The foam application roller preferably ordered from -iinem not networkable and not hygroscopic material,

The Schüamlieierciüse 14 serves to bring a treatment solution, for example alkali metal solution or dye solution 16, onto a display plate 15 with the help of a foam (not shown). As before, foams with a shaving foam-like fineness are preferred. The foam template plate 15 is gswalze Schaumauftr-with respect to the 13 arranged so that for a Sch-uir- ^7: - "contract useful gap between the front end 15 'of the Johauir / ^T orlageplatte 15 and the Sohaum-

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Application roller 13 is created »Foam 16 of the treatment solution should be removed from the feed plate 15 via the gap mentioned are transferred to the application roller 13 "

The amount of the foam 16 transferred to the foam application roller 13 is increased by the width of the gap mentioned steer. To adjust the gap, a crank disk 17 with a connecting rod 18 can be provided, which the foam template 15 or the front end 15 'are located with the floor underneath and by an appropriate Signal, for example an impulse, are to be actuated »By turning the crank disk 17, the gap width between the front end 15 'of the template plate 15 and the foam application roller 13 can be adjusted. If the width of the "aforementioned gap is not variable," will however, the problem mentioned at the outset is in principle also solved by the invention "

When operating a device according to FIG. 3, foams 16 of a treatment solution are applied to the feed nozzle 14 Foam template plate 15 given and from there with a predetermined layer thickness corresponding to da * thickness of the gap width between the front end 15 'of the foam platen 15 and the foam application roller 13 gradually by rotating the Transfer application roller 13 to its scope. The foams adhering to the surface of the foam application roller 13 are gradually transferred to a surface of the web 12 continuously moved forward with the aid of the guide roller 11. If the fabric web 12 consists of porous, easily wettable and hygroscopic material, they are uniform transferred foam particles practically instantly destroyed or broken down and the resulting treatment solution

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is absorbed in the textile material. Bs can therefore be a predetermined amount uniformly depending on the Gap width between the front end 15 'of the stuffer board 15 and the foam applicator roller 13 are applied to the fabric. In a further refinement, e ^ s is then possible » control the amount of treatment solution transferred by adjusting the gap width.

It follows from the foregoing that the foam 16 in the device according to FIG. 3 is first placed on a foam template 15, then brought onto the circumference of the foam application roller 13 and transferred from this to the web of material to be treated. The apparatus' therefore has the following Vantage In operation, the Sotyaum is first brought to a non-wettable and not hygoskopische foam applicator roll 13 through a gap of constant width, the foam application roller, the foam is evenly distributed with a predetermined thickness, then the foam is gradually with a constant thickness, Transferred safely and evenly to a surface of a length of fabric.

In the device according to this embodiment, the foam is applied evenly to the web of fabric; when the sole adheres to the fabric, it disintegrates quickly and the treatment solution is absorbed into the fabric. A sufficient amount of treatment solution , which is necessary and sufficient for a subsequent heat treatment, can therefore be applied uniformly to a continuously running web of material without an excess of treatment solution and / or solvent having to be removed from the material before the heat treatment .

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Example 3

The object of this embodiment is to provide a treatment solution evenly on both sides of a continuously running web of material with the help of a pair γοη To transfer foam application rollers.

According to FIG. 4, a pair of foam application rollers is used, the individual roller being designed and supplied with foam in a manner similar to the foam application roller 13 of FIG. 3. The fabric web 12 to be treated is , however, loosely passed through a gap remaining between the parallel foam application rollers 13 and foamed on both surfaces without a special guide roller 11, as in FIG would be necessary. The individual parts of the device according to FIG. 4, for example the foam delivery nozzle 14, the foam feed plate 15, the crank disk 17 and the connecting rod 18 are essentially identical in the two foam application rollers 13 and agree with the corresponding parts of the embodiment according to FIG. 3 as well as that transferring the foam 16 from the template plate 15 to the show application roller 13 in principle,

Example 4

The embodiment 4 differs according to FIG. 5 from that according to FIG. 4 essentially in that the Foam template plates 15 are replaced by foam template cylinders 19. The axis of the cylinder 19 and thus the gap between the cylinder circumference and the circumference of the application roller 13 can be adjusted with the aid of a control screw 20.

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ORIGINAL INSPECTED

In this manner, a predetermined amount of foam can with even greater accuracy than "in the aforementioned example, to the foam applicator roll 13 transmitted. Of course, the foam template plate 3 can 15 according to Example 2 Tdzw. Fig. Also by a Schaumauf tvsgs cylinder shown in FIG. 5 are replaced.

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Claims (1)

Dr.-lng. Reimar König Dipi.-lng. Klaus Bergen Cecilienallee VB 4 Düsseldorf 3D phone 452OOB patent attorneys 17 November 1980 _o 33759 B SANDO IRON WORKS CO., LTD. No. 4-5, Usu 4-chome, Wakayama-shi, Wakayama-ken, Japan "Process for the continuous application of a treatment solution to a web of material and devices for carrying it through of the procedure " Claims; 1. Process for the continuous application of a treatment solution, for example a color solution, on a continuously moving web of material., characterized that the treatment solution in the form of foam (7, 16) on the fabric web (5, 12) in a for a subsequent heat treatment necessary and sufficient amount without removing before the heat treatment Excess treatment solution and / or a solvent is applied. 2. Device for the continuous application of a treatment solution, for example a dye solution on a continuously moving web of material by a foam container (1) which stores the treatment solution foam (7) formed in a foam generator (2); 130024/0774 Guide rollers (3, 4) for continuously guiding the fabric web (5) through the foam container (1) and for foaming when the material web (5) passes through the container (1); and Means for controlling the amount of foam adhering to the fabric web (5) when it is led out of the foam container (1) (Figures 1 and 2). ο device according to claim 2, characterized by a narrow opening at the Stoffauslaio (1 _O) of the foam container (1) as a means for controlling the adhering to the material web (5) Foam Volume ₀ 4. Apparatus according to claim 2, characterized by a pair of cover plates (6) arranged on both sides of the material outlet (1p) of the foam container (1) as a means for controlling the amount of foam _{0 adhering to the material web (5) when it leaves the foam container} 5u device for the continuous application of a treatment solution, for example a dye solution, on a continuously moving material web, characterized by one in loose contact with the web of fabric (12) continuously running foam application roller (13) for applying a predetermined amount of the treatment solution in foam form on the panel; a foam feed plate (15) or a foam feed cylinder (19) .with a specified gap for the foam application roller (13) for transferring the foam (16) onto the roller (13) according to its rotation; and 13ÖÖ24 / O7U a foam delivery nozzle (14) for successive subsequent delivery of foam (16) of the treatment solution to the gap (Figures 3 to 5). 6. Apparatus according to claim 5, characterized through one of the foam application rollers (13) in an adjustable, continuous passage of the material web (12) the material guide roller (11) assigned to the permissible distance and used to transport the material. ο Device according to claim 5, characterized by a pair of foam application rollers (13) between the remaining gap for the continuous passage and coating of the fabric web on both sides (12) with the foamed treatment solution. 8. The device according to one or more of claims 5 to 7, characterized in that the foam application roller (13) adjacent front end (i5-i) of the foam feed plate (15) on a for adjusting the gap width between the front end (15 ^) of the latter ( 15) and the crank (17) serving the circumference of the foam application roller (13) with an eccentrically attached connecting rod (18) is set ₀ 9. The device according to one or more of claims 5 to 7, characterized by one on the Foam feed cylinder (19) provided control screw (20) for adjusting the gap width between the circumference of the Foam template cylinder and the circumference of the foam application roller (13) ο 13ÖÖ24 / 0774