DE1805119A1 - Method and device for mercerising textile goods - Google Patents

Description

Method and device for mercerising textile goods

Me invention relates to a method and an apparatus for continuous mercerization of fabrics and other textile webs made of cotton or the cotton in which the textile is treated with caustic soda under tension, then the Sodium hydroxide solution is removed, in particular by washing and, if necessary, a steam lye.

It is known to mercerize cotton fabrics To achieve shine. Mercerization is the treatment with strong caustic soda under tension. During mercerization, the density and strength of the cotton fibers increase and the dye receptivity is increased. The well-known mercerising machines have a caustic or Impregnation compartment, a stabilization compartment, a steam drainer and then a washing machine. There are one in the caustic compartment A plurality of rollers are provided, which are preferably arranged offset from one another. The tissue becomes through these roles led under tension and immersed in the sodium hydroxide solution. Due to the action of the caustic soda, the fabric strives to shrink. However, shrinkage of the fabric is avoided by placing the fabric under high tension on the rollers.

Due to the firm attachment of the material to the rollers under high. Tension, there is no rapid wetting of cotton fabrics or blended fabrics that contain cotton. Since such machines z. Z. at 4o - 6o.m / min, walking and

009821/1788

BATH ORIGINAL

speeds of 100 m / min, and more are aimed for, so the caustic compartment as well as the stabilizing compartment must correspond accordingly large and equipped with a corresponding number of rollers »

The invention is now based on the task of providing a mercerization option to create, in which the leaching time and the treatment times in general can be shortened with an extremely uniform effect,

φ According to the invention this object is achieved in a simple manner in ^ that the Gexv ^r ebe or textile webs at least "during a part and that the first part of Laugierbehandlung, flows through sodium hydroxide solution" Here, each individual fiber is intensively with sodium hydroxide solution into contact so that a shock-like and completely uniform wetting is done "Since the singed gray fabric is mercerized especially with cheap quality in general ', i \ relches is bad network-capable, the new method brings @ substantial improvement" But even with desized fabrics, the new method is of Advantage.

■ ·

^ The inventive method also makes it possible now several lanes on top of each other at the same time via the mercerising machine to drive" ·

For mixed fabrics, z, B ₀ cotton -and- rayon or "cotton and polyamide fibers it is particularly important that the sodium hydroxide solution from the. Fabrics is suddenly as possible reduced to a concentration of ca, S ⁰ Be in Stabilisierabteil. A sudden reduction of Caustic concentration can also be achieved here again by using the flow-through pipe, for example by directing hot water through the fabric ₀ "

In addition to woven fabrics, knitted fabrics, non-wovens and the like can also be used be mercerized with this procedure *. -

9821/1788 SAD ORIGINAL

A further rapid leaching is obtained by using a steamon leacher and then by applying the Flow-through principles when washing out on the washing machine.

The device of the invention is therefore to possess hu Laugierabteil in known manner, preferably two rows of mutually offset rollers, wherein at least one roller at the beginning of Laugierabteils liquid permeable, e.g., B- is perforated, and is traversed by the sodium hydroxide solution.

Those flowing out of this cylinder on one or both end faces Fleet can be converted into one. Collecting container flow, in which a pump is arranged, which pumps the liquor back into the caustic compartment.

Are several liquid-permeable or perforated rollers provided, it is advantageous to have a common collecting container for this purpose provide with a pump to return the liquor to the bath.

The stabilizing compartment is at the srzi, .- · .. »; Ag. Ge ^ äP.en device, like the caustic compartment, is provided with at least one liquid-permeable V / alze through which Flot'te flows, so that by means of this roller the leaching of the material ^{can be carried out abruptly to about S 0} B6 at the beginning of the stabilizing compartment.

The subsequent steam leacher, if extracted, can be used in be built up in the usual way.

To completely remove the lye from the textile material, it is advisable to use a washing machine with a suction fan To use sieve drums, or a washing machine that works according to the flow-through principle.

009821/1788

8AD ORlQtNAt

The washing effect when removing the lye is so good, that the same wash-out effect is achieved with a five-bath washing machine as before with a ten-bath washing machine well-known skid washer.

The goods can then be dried.

In general, something is known to look good in one of the baths Acid added to acidify and neutralize the lye.

^ An embodiment of the invention is in the drawing

shown. They show: FIG. 1 a longitudinal section through the

The device and FIG. 2 shows a cross section through the caustic compartment.

The device shown consists of a caustic or impregnation compartment 1, a stabilizing compartment 2 and a five-bath washing machine 3. To hold the fabric, a press 4 is provided at the beginning, then the fabric guided over rollers S in the caustic compartment. The first two rollers 6 of the lower row are perforated and are of Liquid flows through from the outside to the inside. In this device, the liquid flows on both of them P end faces out of the roller into lateral collecting containers 7, from where they are pumped into the bath via the distribution box 9 is pumped back. In many cases, however, a one-sided liquid outlet is sufficient.

When the textile web 1o passes from the caustic compartment 1 into the Stabilizing compartment 2 is the textile web To through another Press 4 dewatered. Stabilizing compartment 2 is similar constructed like the caustic compartment 1 and has two perforated rollers 6 through which liquid flows. The number of Rollers in the caustic and stabilizing compartments are only examples selected, any other number of rollers can be provided.

. 5. 009821/1788

.i; SAD

'" ¹ I"" ¹ STiI s. ¹ , ¹ J ¹¹ T ¹ V ■■,: ■!:!:» ■ ι: ■■ -

As can be seen from Figure 2, the pumps 8 are via a pump shaft Π connected directly to the pump motor 12. These parts together form an easily exchangeable unit.

Following the Stabilisierabteil a fünfbädrige washing machine is shown, in each bath \ v ^r iederum is a perforated, liquid cooled roll 6 provided even with these baths, the liquor flows into lateral collecting compartments, from where they are fed back via a pump into the bath will. The structure of these baths is similar to that shown in FIG.

Presses 4 are provided between the individual baths. By the fact that the textile web on the perforated rollers from the washing liquor is flowed through, there is an extraordinarily intensive de-leaching. Between stabilizing compartment 2 and washing machine 3, a known steam ventilator can be interposed, if desired.

009821/1788

8AD ORIGINAL

Claims (6)

VEPA AG V 3o4 Basel, Parkweg 35 Ö 23-1ο-Ί968 Switzerland patent claims 1. Process for the continuous mercerization of tissues and other textile webs made of cotton or which contain cotton, in which the textile material with caustic soda under tension treated, then see the caustic soda, especially through Via, P is removed, characterized in that the textile material at least during part of the caustic treatment of Sodium hydroxide is flowed through. 2. The method, in particular according to claim T, characterized in that that in order to remove the caustic soda the textile material is flowed through with water and, if necessary, with steam and acid solution. 3. Device for carrying out the method according to one of the preceding Claims with at least one caustic compartment in which preferably 2 rows of rollers are arranged offset to one another, over which the textile material is guided under tension and with t soda lye soaked \ tfird and using a washing machine and if necessary with a steam lye for removing the lye from the textile material, characterized in that in the causticizing compartment at least one roller is perforated or permeable to liquid and lye flows through it 4. Apparatus according to claim 3, characterized in that the liquid-permeable roller by means of a level difference of flows through from the outside to the inside and that the liquor flowing out of the roller at one or both end faces in a collecting tank flows, in which a pump is arranged, which pumps the liquor back into the bath. 009821/1788 & AD ORIGINAL 5. Device nach.Anspruch 4, characterized in that .A collecting container for several perforated or liquid-permeable Rolling is provided. 6. Device according to one of the preceding claims, in which your caustic compartment is followed by a stabilizing compartment, characterized in that in the stabilizing compartment at least one liquid-permeable through which liquor flows Roller is arranged. 009821/1788 8AD ORiGtNAL Blank page