DD264040A1 - METHOD FOR DESIGNING FIBER TONES - Google Patents

Abstract

The invention relates to a method for patterning fiber webs and is used in the production of patterned products for residential use, for clothing as well as for technical purposes, in which part or predominantly nonwoven fabrics are used as surface formers. According to the invention, the nonwoven fabric to be processed by intermeshing, needle punching, sewing or similar methods is changed in its coloring by transfer printing, injection printing or other printing methods and fed to the processing machine in this form. Fig. 1

Description

Hio'rj 1 page drawings

Field of application of the invention

The invention is used in the manufacture of products in which partly or predominantly non-woven fabrics are used as surface-forming agents. Df.s concerns z. B. Vlios knitted fabric, nonwoven-Faden-Nähgewirke, Polvlies-Nähgewirke etc. manufactured according to such '. Used both home and clothing products as well as for technical purposes.

Characteristic of the known state of the art

At present, products of the type mentioned are produced exclusively in unicolour, because it has hitherto not been possible to produce patterned nonwovens. Related proposals are extremely expensive and therefore not realized in practice until today. They assume the presence of a multitude of colorful fiber particles, which are then patterned to form a nonwoven. Even if this was mechanically successful, the individual parts of the fleece would not have sufficient cohesion with each other and would therefore not be processable.

A survey of such products is known only as terminal equipment, i. h., the already finished fabric is treated accordingly. But this is not possible to penetrate deep into the fleece and the fibers z. B. in Polvlies products to the bottom to stain or a Naßb9handlung is necessary. In addition, no sharp outlines can be reached.

According to DD-PS 149095 Foser strands are needled onto a nonwoven to achieve a pattern of the web. According to DD-PS 151580 colored fleeces are masked superimposed and connected to each other. Thus, a color and relief-like pattern is achieved. However, the products produced in this way are relatively heavy and stiff and are not suitable for clothing wigs.

From CH-PS 6437! 4 is a Ve / fahr.gn for decorating textlien Flächengebiiden known by or on a knitted surface from the back rovings, carded belts od. Like. Sewn or be a & ennadelt.

It is also known from DD-PS 53675, manually create pattern-forming surface motifs on a base web and connect by sewing or Vernadein with this.

It is also known to print combing by the Vigoureux printing process. The combed strip is printed like a strip and then steamed. During subsequent spinning, color blends have been achieved in which the warping of the barrels does not interfere.

Object of the invention

The object of the invention is to develop patterning methods for nonwovens which ensure good color through of the material and at the same time do not interfere with the manufacturing process.

Explanation of the essence of the invention

The invention is based on the Aufo abe, in processes that use nonwovens for surface formation, diwse even before the Verberbe ^: ..ung to pattern, so as a complete color penetration of the nonwovens or a color design into the ground for Polvlies knitted fabrics too achieve.

The object is achieved according erfindiingsgemäß that changed by meshing, stitching, Vernadein or similar processes to be processed nonwoven fabric by transfer printing, injection printing or other printing process in its color and in

this form of processing machine is supplied. The coloring can in the inventive method on one side,;

but it can also be done on both sides. '' (

It is possible according to the invention to classify the coloring in the continuous workflow. The working process can

but also run off discontinuously by the coloring takes place before a storage process, ie the printed fabric is on _;

wound up a large docks and processed by this. :

According to the printing process, the color transfer or the dye fixation takes place in a dry way, i. through a Dry-transfer printing process, or other printing processes in which an inclusive dry and / or ; Fixing process follows. During the further processing of the printed fibers, there is hardly any distortion of the fibers or the respective! Pressure pattern adapted de ι compression or distortion ratios of the web. > There are various ways to realize the invention. It can be longitudinal or cross-oriented, as well as confused

be patterned. ,

For the processing of cross-oriented VlJese the coloration on the removed from the carding longitudinally oriented fleece

Orler also done on the right angle discharged layered fleece. ';

For Polvlies products is essentially a color on the longitudinally oriented web in question. The nonwoven patterning according to the invention is preferably carried out by the transfer printing method, since there or then no,; Wet treatment processes are required. - In the transfer printing technique, the pattern printed on paper becomes the textile material by thermal treatment

transferred and fixed on the fibers. If a Gleichseitigkeit of the pressure required, the nonwoven fabric between two

Transfer papers are performed. If additional color fixation is required, it must be done after painting, but before further processing Fleece done. Also after coloring, before further processing, the nonwoven fabric with preparations, eg. For example, Improvement of lubricity be provided. The treated web is then presented directly to the processing machine or stored for later processing. : Nonwovens patterned in such a way can be further processed in wide form or combined into strands. Also the

appropriate treatment of ligaments by this method is possible.

Embodiment j In one embodiment, the invention will be explained in more detail. The drawing shows in 1: the arrangement of a printing device in the transport path of the nonwoven in longitudinally oriented nonwovens: Fig. 2: the arrangement in transverse oriented webs

According to FIG. 1, the nonwoven former 1 -in the form of a carding machine-delivers a longitudinal fiber fleece 2 made of polyester fibers in a known manner via the pickup 1J

The basis weight of the nonwoven is 30 g / m ² .

The fleece 2 is at a goods speed before. 4m / min with the help of the transpon cloth 3 transported away from the web forming 1 and passed under the Druckeinrichutr.g 4. By contact of the transfer printing paper 5 r> it to the fabric 2 is at jine: transfer temperature of 200 ⁰ C to 210 ° C, the print pattern on the nonwoven fabric. 2 The colorless paper 5a is derived by Passieron the printing device 4 and wound on the dock 6.

The transfer printing paper 5 is guided on a felt follower, on a heated drum or on a belt. The ink transfer takes place, as usual in the transfer printing process, by contact heat. After this process, no further aftertreatment of the web is required. The patterned nonwoven fabric 2a is passed on to the stitchbonding machine 7 and processed into a nonwoven sewing fabric that can be used as a decorative fabric.

Nonwovens made of PAN fibers can also be patterned in this way, although the temperature has to be reduced to 19O ⁰ C and the dense color depth is significantly lower.

But it can also be used all other fibers r where suitable coloring processes can be applied. If the nonwoven fabric is to be printed on both sides, it can be passed between transfer paper arranged on both sides and likewise patterned on both sides by contact heat.

When using Rouleaux-, screening, spraying or other printing process takes place after the application of the ink by means of a suitable device, the drying and dye fixation by a heat treatment.

From Figure 2, the arrangement of the printing device 8 in the production of transverse oriented fiber webs 9 emerges. The further treatment corresponds to the ratios described under FIG.

Claims (8)

1. A process for patterning nonwoven fabrics, characterized in that the nonwoven fabric to be processed by meshing, stitching, Vernadein or similar processes by transfer printing, injection printing or other printing processes in its color and fed in this form of the processing machine. 2. The method according to claim 1, characterized in that the coloring is done on one side. 3. The method according to claim 1, characterized in that the coloring takes place on both sides. 4. The method according to claim 1, characterized in that the coloring is classified in the continuous workflow. 5. The method according to claim 1, characterized in that the coloring takes place before the storage process. 6. The method according to claim 1, characterized in that the coloring takes place by dry heat exposure. 7. The method according to claim 1, characterized in that after the color treatment, a drying and / or fixing process takes place. 8. The method according to claim 1, characterized in that the pattern is adapted to the compression or preferential ratios of the web.