DE19512542C1 - Process for the discontinuous, permanent decatation of web-like textile goods, such as woven fabrics, knitted fabrics or the like. - Google Patents

Description

The invention relates to a method for permanent Decatize with a steam sealable seal boiler rotatably mounted steam drum on which the goods wound up together with a follower and treated with steam is then cooling air from outside to inside through the Goods wrap is sucked.

In practice, one speaks generally of full decoration and Half decoration. The term "full decoration" means in all mean those decatizing effects which are with autoclaves Pressure and almost absolute evacuation of which to decat air contained in the goods can be achieved.

When performing the full decoration (called the boiler decoration) the goods are always dry - after the pressing process - submitted. The goods to be fixed are therefore usually in the over-dried condition and thus with a moisture content between 8 and 10% on the decatizing drum of the boiler decatizing machine wound up. With steam treatment in the autoclave you will now  moisture still withdrawn (approx. 2-3% further withdrawal). Here a good fixation of the wool fiber arises, but increases thereby the risk of yellowing. In general, the classic Boiler decaturation is not an ideal solution for wool fixation. she has even major drawbacks. So z. B the goods are very thin and preserved a paper grip (stiffness); a handle that at all is not in demand and therefore post-treatment by a "Finish-Dekatur" makes it inevitable. In addition, too much arises Shine on the surface of the goods, its resistance to the Steam bar loads in the area of the assembly only partially is permanent.

The object of the invention is to demonstrate a method which ches the advantages of full decoration in one, without doing so however accept their disadvantages and beyond to achieve unmatched decatation effects.

This object is achieved according to the invention in a generic method solved with the features of claim 1. In complete departure from according to the established habits, the goods to be fixed become strong presented wet state. This creates a special one effective effect when the goods are wetted and squeezed (Foulard) of this kettle decoding treatment with a moisture content between 20 and 80% is supplied.

The damp goods are thus together with the classic Follower fabric wound on the decatizing drum and after Fer position of the winding is damped. What is new is that the damping of the winding within a pressure-tight ver closable boiler takes place where appropriate the steam pressure temperature can also be reached above 120 ° C can lead to permanent fixation even without the use chemical fixative. In other words, that means the wrapped between relatively dry idler layers, strongly dampened goods are first flowed through by the steam and on effective air pressure treatment after the air is expelled  lung experiences. With this procedure, the one to be fixed Goods cooked between the individual idler layers. This creates a very good wet fixation in which the evaporator from the moisture of the goods is absorbed by the follower and there allows the fiber to swell during the fixing phase light becomes.

The effects that can be achieved are even better than those of the past well-known classic wet decoration, for reasons of unwirt is no longer used today. At the process according to the invention creates a permanent deca animal effect with volume, soft feel and minimal gloss winding. The low gloss development is particularly appreciated because it presents a noble matt effect. Matte effect and wa volume is characterized by the evaporated moisture balance. In addition, the moisture content prevents the so feared yellowing symptoms of exercise.

The advantage created in the goods leaves in the follower tissue an increasing moisture content. This is after two to three treatment batches so high that the effect of the fiction according to the procedure would decrease if the follower did not like which is dehumidified. The rising moisture in the follower must therefore be constantly reduced to a constant level the so that the absorption capacity decisive for the effect gene remains.

The method according to the invention is described below with the aid of Exemplary embodiments explained in more detail. In the associated Drawing shows in a purely schematic way:

Fig. 1 is a vertical section transverse to the direction of goods and interleaving by an embodiment of a decatising machine for carrying out of the method according invention,

Fig. 2 is a vertical section through a second Ausfüh approximate shape for performing the United method according to the invention.

1 with the follower is referred to, which is wound together with the untreated, that is not yet decated but heavily moistened textile material 3 on a decatizing cylinder 2 . While the winding of the idler 1 takes place under selectable and controlled longitudinal tension, the untreated, moist textile material 3 is fed under the slightest longitudinal tension. The winding takes place directly within a pressure-tight lockable autoclave 4 .

After winding, the follower 1 is released with the aid of a quick-connect connection 1 a and remains outside the autoclave 4 , whereas the other end of the follower is completely wound onto the decatizing cylinder 2 . Then the cover 5 of the autoclave 4 closes. The decatation process begins. The process is fully automatic in a known manner with all types of programming.

After the program has finished, the cover 5 opens, the Mitläu fer quick-connect connection 1 a is closed again and the rewinding of the follower 1 can begin. For the rewinding of the idler, at least one driven winding roller 6 is present. However, it is very practical to use additional winding rollers 6 a, 6 b. . . To be provided for different types of followers, and changing these followers is very easy.

Contrary to the designs of conventional boiler decatators, the winding rollers 6 , 6 a, 6 b. . . Perforated and connected to a special suction device 7 . It is essential that on the winding roller 6 , 6 a. . . only the follower web 1 can be wound up.

The already decated textile material 3 a is separated from the follower 1 during the unwinding process and automatically takes its way to the table 9 with the aid of a lanyard 8 .

According to the inventive method, the incoming textile material is fed in a moist state between 20 and 80% and is wound up together with the follower 1 on the decatizing cylinder 2 . The winding thus formed consists of a large number of dry idler layers and the intermediate layers of moist textile material 3 . In the subsequent steaming process in the pressure-tight autoclave 4 , moisture is now transferred from the textile material 3 to the follower 1 by the action of temperature and time - ultimately by the cooking process.

To avoid increasing moisture in the idler fabric, according to the invention, from the decatizing cylinder 2 starting idler fabric 1 on the way to the idler winding roller 6 , 6 a. . . first subjected to a dry treatment 10 and then to a suction treatment 7 . These treatments of course also work in the opposite direction when rewrapping new textile 3 , so that sufficient drying and dehumidification of the idler 1 is ensured to constant residual moisture ratios.

According to Figure 1, the drying treatment is effected 10 through a drying oven. The drying takes place here by exposing the follower 1 to hot air at a high flow rate or the like (e.g. infrared). In the center of the driven, by forged idler rollers 6 a, 6 b, an intensive suction acts, which is not shown in the drawing. To have special flow machines have proven themselves here, which adapt themselves to the respective winding condition in the manner of a multi-stage turbine or the like and adjust themselves automatically in the intensity of the suction force and the volume flow.

In the embodiment according to FIG. 2, the dry treatment 10 of the follower 1 consists in contact drying by heated contact rollers 12 , 12 a. It makes sense to contact Mitläu fer 1 from both sides with the heating rollers 12 , 12 a in heat con. For this reason, at least two contact rollers should be in use.

It is of course within the scope of the invention to change the number of contact rollers 12 , 12 a if this requires the required drying power for the follower 1 .

By regulating the follower moisture, the initial moisture of the textile goods 3 a can be influenced after decaturation. Infrared drying according to FIG. 1 is particularly suitable for this.

Claims (2)

1. A method for the discontinuous, permanent decatizing of web-shaped textile goods, such as fabrics, knitted fabrics or the like, on a decatizing machine with at least one decatizing cylinder, on which a follower and the untreated textile goods are wound into a wrap and this is then steamed and Decatizing process with subsequent suction is subjected, characterized in that the textile material ( 3 ) or the like to be treated with a moisture content of between 20 and 80% together with a relatively dry idler fabric ( 1 ) on the decatizing cylinder ( 2 ) within a pressure-tight manner sealable autoclave ( 4 ) is wound, and the thus formed winding is flooded with effective vapor pressure and temperatures above 120 ° C by the steam, the water content of the textile material ( 3 ) to be treated brought to a boil by the relatively dry idler fabric ( 1 ) absorbed and thus a fiber swelling during the temporal fixing phase is made possible. 2. The method according to claim 1, characterized in that the moisture of the idler fabric ( 1 ) outside the Dekatierkes sel ( 4 ) and during the wrapping processes by drying ( 10 , 12 , 12 a) and suction ( 7 ) or the like. Reduced and is brought to a constant setpoint.