DD144283A1 - METHOD FOR THE CONTINUOUS PRODUCTION OF UNFAVORATED, VELOUSED TEXTURE YARN - Google Patents

Abstract

The invention relates to a method uncolored To provide texture yarns for velor products. The goal of Invention is inexpensive, uncolored material manufacture. The object of the invention is to provide a continuous process for producing uncolored, velor suitable yarns. The solution according to the invention provides synchronous fixation of the dye on the thread and the thread fixation even at temperatures of 130 to 150 ° C and at a Residence time from 1 to 3 min. Before.

Description

Title of the invention

Process for the continuous production of uncoloured, suitable textile yarns

Application of the invention

The application of the invention is expediently carried out in establishments which have continuous heat-setting installations. "It allows the post-processing industry to use the dyed carpet texture yarns for the production of patterned carpets with cut naps."

Characteristic of the known technical solution

The use of textured polyamide silks or polyesters in conventional carpet preparation processes leads to textiles of high utility value and appealing quality. Thus, particularly textured polyamide silk and fibers are used

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for the technology V / eben, Wirk, Taften, Malimo and Liroflor »If the goods are not printed or dyed during manufacture, the yarns used must be dyed in upstream stages to give a pattern or color of the floor covering to enable.

For use in suede carpets (cut nubs), an additional, separate operation in the form of a thermosetting to crimp development, initiate shrinkage and increase the degree of order is required to produce representative high utility value carpets (eg, low surface area). to obtain. The fixation is expediently carried out on individual threads or flocking at a temperature range from 130 to 150 ° C. in the presence of saturated steam.

Various processes are known which provide a dyeing of the granules with an aqueous liquor during or after extraction (in accordance with the technology of the chemical fiber plant "Herbert Warnke", Wilhelm-Pieck-Stadt Guben) of the polyamide granules of granules and drying, the granules may be further processed into dyed spun silk or textured silk by known extrusion spinning techniques. The process requires relatively large uniform batches to reduce waste from color transitions. At the same time, the melt spinning process requires the use of special, thermally stable dyes ·

Furthermore, methods are known which make it possible to dye Fad.enscharen continuously. These technologies have been developed primarily for the Space-d.ye systems (Textilpraxis international 12/78, page 1485 and following). It is a common feature of these systems that a base color and, therefore, pattern rolls or centrifuges create a space effect. After application of the dye, the group of threads passes through a fixing device which is designed so that a fixation

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dye on the thread is made possible. In order to keep the thermal load of the fixing thread as low as possible, one chooses low residence times and gentle temperatures. Usually, the residence time for fixing the dyestuff to the threads is 2 to 6 min applied dye and the polymer and the temperatures are from 102 to 106 ⁰ C.

These fixing conditions which are sufficient for the fixation of the dye on the thread do not make it possible to use the thread material for velor products. For example, no shrinkage values suitable for velor products can be achieved under these gentle fixing conditions. In addition to this deficiency, the space-dye process is characterized by the fact that primarily discrete districts of the thread or the thread coulters are stained · A continuous unicolouring with such methods requires a high material-technical effort · Generally, these methods do not allow, over the entire thread length to apply a uniform application of paint, which is not required for space processes, but is an absolute prerequisite for unicolouring »

Object of the invention

The object of the invention is a method which allows cost-effective supply of uncoloured material having suitability for bicycles.

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Presentation of the invention of the invention

The object of the invention is to provide a method which makes it possible to continuously produce, after a technologically easy-to-handle kegime, uncolored threads which meet the requirements for velor products.

According to the invention the object is achieved by a method in which a _s formed from a high polymer under the usual conditions stretched, textured yarn passes a dye application system and is subsequently fixed, which is characterized in that the fixation of the dye on the thread and the fixation of the thread is carried out synchronously at temperatures of 130 to 150 ⁰ I «

from 130 to 150 ⁰ U and at a residence time of 1 to 3 min

Surprisingly, it has been found that, when carrying out the process according to the invention, uniform dyeing with sufficient color fastnesses as well as fixation of the thread to achieve a suitability for velor are achieved. As is known, the fixation of the dye on the thread takes place according to a different chemism than the morphological restructuring of the thread. While the staining fixation is predominantly physico-chemical, the fixation of the thread is. ens a physical process in which morphological rearrangements take place whose kinetics are subject to other laws.

A yarn produced according to the method of the invention has the necessary development of single curling, low shrinkage and. a high Ord.nungsgrad, on. Properties that are

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presentable carpets with cut Koppe are expected.

Compared with the known processes, the solution according to the invention has the following advantages:

- The procedure is to operate continuously and. allowed to produce uncolored heat-set texture yarns.

- The technologically conditioned fixation of Fad.ens and. the fixation of the dye on the thread is synchronous, so that additional aggregates omitted.

- Furthermore, the process allows a fast color change and color blends werd.en avoided during color change.

exemplary embodiment

The invention will be explained in more detail below using an exemplary embodiment:

The submitted polyamide-6 with a titer of 2 χ 130 tex (64) is combined to a Fad.enschar of 6 Fäd.en. The Fad.enschar passes an inking system, d.as works in this way, d.ass the Farbflotte is applied by Zentrirugen on Fad.enschar .. The concentration of the dye liquor is 2 g / l of a fast-fixing acid dye. The paint application system is a 2 V / alzen padder. downstream. The gap between the padder rollers is adjusted so that excess dye liquor is eliminated but at the same time equalization takes place.

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Before being .fadenschar placed spirally on a conveyor belt, which takes over the transport of the material through the fixing device, is subjected to the yarn sheet a temperature shock treatment · The fixing is carried out at 138 ⁰ O, the average residence time is 2 min 20 see · The temperature is by means üattdampf realized usually follows after fixing a cooling process, and. the threads are wound up and fed to further processing.

The threads produced in this way have the following characteristics:

Color fastness (light fastness: Hote 5 »water: lightly ₉ rubbing fastness wet and dry: grade 4) according to TGL 16665128/01, Shrink crimping (air) 12 % according to TGL 142-2047, sheet 1 degree of order 0.4 (X-ray according to" Testing textiles ", Vol. II.

A velor carpet made from this material has the following surface adhesion. to: "not more than 35 %" (tested according to TGL 16-650665).

Claims (1)

• - 7 - 213 Erfindungsanapruch Process for the continuous production of uncoloured velor textile yarns by spinning out a polymer with subsequent stretching, texturing and fixing of shaped filaments with the interposition of a dye application system, characterized in that the fixation of the dye to the thread and the fixation of the thread itself synchronously carried out at temperatures of 130 to 150 ⁰ C and at a residence time of 1 to 3 min ·