DD255559A1 - METHOD FOR PRODUCING A TEXTILE FLUID IMAGE - Google Patents

Abstract

The invention relates to a process for the production of a textile fabric, preferably a non-woven or non-woven yarn sewing knit. The aim and object of the invention is to produce voluminoese products of fibers and / or Faeden, on the top of a dense velor or Polnoppen to be generated by a targeted arrangement of the fibers and / or Faeden. The object is achieved according to the invention in that a textile fabric is made by stitching fibers and / or threads, wherein the stitch bars consist of at least two superposed mesh layers and the mesh legs of the outer mesh layers are longer than the mesh legs of the inner mesh layers.

Description

For this 6 pages drawings

Field of application of the invention

The invention is preferably used in the production of nonwoven and nonwoven suture stitch fabrics.

Characteristic of the known technical solutions

The manufacture of nonwoven and nonwoven suture stitch fabrics is known. These are worked using slide needles with a hook space. This hook space serves to receive the fibers of the fleece and / or for receiving the sewing threads. The material grasped by the hook is pulled back through the fleece or out of the fleece and deposited as stitches. This results in tight wales.

For further treatment in the equipment on the side of the wales, so as not to damage the wales, only velor formation is possible with the nonwoven obtainable between the wales.

Object of the invention

It is the object of the invention to produce voluminous products of fibers and / or threads, on the upper side of which, on further treatment, a dense velor or even tufts can be produced without negatively influencing the fabric in its textile-physical parameters.

Explanation of the essence of the invention

The invention has for its object to arrange the fibers and / or threads within the mesh structure so that certain effects can be achieved, or the material properties typical of the fibers and / or threads are better utilized

 The object is achieved in that a textile fabric is made in the mesh

Fibers and / or threads are formed, wherein the wales consist of at least two superposed mesh layers and the mesh legs of the outer mesh layers are longer than the mesh legs of the inner mesh layers.

The mesh feet of the meshes of all mesh layers are rooted in the same puncture channel, while the mesh heads of the stitches of all mesh layers are tied either by the next stitch row or part tied off by the next, a part by every second or by further courses.

The change can also be done in rows between the individual mesh layers.

The inventive method is further characterized in that the meshes are tied differently tight. Thus, the meshes extending over two or more rows of stitches can be tied as tightly as the stitches extending over a row of stitches or else tighter or less tight than the stitches extending over a row of stitches.

It is also possible that the mesh webs of the stitches of one or all of the stitch layers on the right side of the fabric are formed into pile loops, or the inner mesh layers are formed of shrinkable material and in a shrinkage treatment the outer mesh layers are thrown in a knob-like manner.

In addition, in the method according to the invention, the filaments forming the mesh layers can change from the inner to the outer mesh layer or from the outer to the inner mesh layer.

In the method according to the invention, threads, fibers of a nonwoven, or fibers of a nonwoven and threads are drawn through nonwovens, filament layers, base webs, mesh structures or other fabrics and used on the side facing the needles using needles having at least 2 rectified Hakeri deposited the fabric in the form of at least 2 superimposed mesh or mesh layers. In this case, the superimposed meshes can be formed of different lengths and thereby present different degrees of strength, the mesh feet of both meshes are rooted at the same point of the mat and the mesh heads are tied together by the following stitches. This type of involvement causes the loose mesh posing so that in subsequent processes, eg. B. Rauhbehandlungen, from these voluminous wales a velor blanket o. Ä. Can be formed.

But it is also possible for Polbildung by threads on the web side of the product, the loose mesh inherent thread reserve by z. B. Rauhprozesse on the web page to generate a pole to use whose height is greater than that of the Polplatinen used. However, it also corresponds to the essence of the invention, if the superimposed meshes have different lengths and thereby root the mesh feet at the same point of the nonwoven, but only one stitch head in the subsequent stitch row, while the other mesh head is tied in the next but one stitch row. But it is also possible that the mesh head of the overlong mesh is tied off only in the third row of stitches. This type of incorporation can be achieved by deliberately preventing the tearing off of the long drawn-out half-stitch by suitable measures, e.g. by lengthening the middle web between the two hooks of the needle and / or adjusting the stitch length, etc. Depending on the configuration of the parameters, tight and loose stitches can also be formed here. An advantage of this variant is that, depending on the tightness of the long drawn-out stitches, preferably the textile-physical parameters of the product can be controlled

z. B. Increasing the breaking strength, change the K / L behavior, depending on whether the two thread systems simultaneously or successively absorb the tensile load or not.

Furthermore, it is within the meaning of the invention if the long stitches are always formed by one and the same thread system.

But it is also possible to form the long and short stitches alternately of both thread systems. The latter can be used once to pattern the left side of the product (mesh side). On the other hand, a mutual locking of the stitches is thereby achieved, whereby a stitching during the surface forming downstream Bearbeitungsprpzesse and in use avoided or substantially restricted. For this purpose, a pattern-wise mutual assignment of the front and rear slider needle hook is necessary. The use of other thread systems and thread guide members, z. B. guide rails, is possible, wherein the formation of Nähgewirken can be realized with both one-sided and two-sided pole.

The use of shrinkable or adhesive materials in the nonwoven fabric and / or in one or all of the thread systems is possible and may e.g. be used to assist the consolidation of Polelementen in the fabric formation or for tightening stitches, whereby it u.a. comes to bulge certain districts of the fabric.

When using shrinkable fibers in the nonwoven, both homogeneous mixtures and layered nonwovens can be used. It can be ensured by appropriate control of the closing wire and the slider needle that a hook fibers of a fleece layer, the second hook fibers of another nonwoven layer detects. The different nonwoven layers can consist of different fineness, length, color, etc. When using different colored nonwoven layers thus patterning of the stitchbonded fabric can be achieved.

Patterning by the yarn systems used is also possible. It can be patterned on both the web side and mesh side. It can be patterned smooth knit as well as provided with pile loops or Polbüscheln Nähgewirke. In addition to the formation of colored patterns and the formation of plastic patterns, z. B. by the utilization of the length reserve loosely integrated mesh possible. This pattern effect is enhanced by the lifting of the pole loops.

In one embodiment, the invention will be explained in more detail. Show

Fig. 1: a longitudinal section through a work according to the invention with separate processing of nonwoven fabric in one

Hook space and threads in another hook space Fig. 2: a longitudinal section through a work according to the invention in processing of nonwoven fabric in a hook space and

Threads and nonwoven fabric in another hook space Fig. 3 shows a longitudinal section through a work station according to the invention with a nonwoven-filament stitchbonded fabric, in which the long drawn-out stitches of one thread system extend over two rows of stitches through a second thread system

FIG . 4 shows a variant of the mesh arrangement .

Fig. 5: an illustration of the change in the thread systems in the stitch formation

6 shows a longitudinal section through a workstation according to the invention in the arrangement of pile boards. FIG. 7 shows the arrangement during production of pile tufts and presentation of yarn layers

The workstation of FIG. 1 is constructed in a known manner. It consists of the tee board 1, the needle 2 with the closing wire 3, the needle hole 4, the counter-holding needle 5 and a counter-holding rail 6. As a needle 2, a needle with two rectified, successively arranged hook spaces 8.10 is inserted through a central web eleventh are separated from each other.

The fiber fleece 7 is supplied in a known manner. The slider needle 2 pierces the nonwoven fabric 7 at least to the extent that the hook space 8 is free to receive the thread 9 guided by the perforated needle 4. The hook space 10 is only so far

expelled that a secure detection of the fibers of the nonwoven fabric 7 takes place.

When reversing the needle 2 takes both the detected by the hook space 10 fibers of the web 7 and the thread 9 through nonwoven fabric 7 with back / at the same time pushes the closing wire 3 in the leadership of the needle 2 as far forward that successively the hook spaces 10th and 8 are covered. They are slipped under the hanging on the shank of the needle 2 double stitches 12,13, so that they can be dropped over the tip of the needle 2 to 14, 15 stitches.

The half-stitch 12 is formed from the fibers of the fleece 7, the half-stitch 13 from the thread 9. Since the hook space 10 is pulled further back than the hook space 8, the stitches 14 are not taut but loose or voluminous over the tight stitches 15. However, both stitches 14,15 are rooted in the same location of the fiber fleece 7. Length of the central web 11, stitch length, etc. - coordinated so that the half-stitch 12 is pulled out only so long that it is safely knocked off the needle 2.

In the equipment, the wales of the stitches 14 may be e.g. roughened and give a velor-like surface. The tufts are clamped by the mesh 15 and held, so that a high stability of the pile fiber blanket is expected. "

It is also the spirit of the invention, when the hook space 8 fibers of the nonwoven fabric 7 is detected and formed into mesh or the hook space 10 is covered with threads. Instead of the web 7 and transverse thread layers can be arranged. The combination of transverse thread layers with longitudinal thread layers and / or with nonwovens or other fabrics is also possible. The use of prefabricated base courses is possible. In this case, both hook spaces are covered with threads and form the threads in the hook space 8 Polschlingen products can be made with double-sided Poldecke.

According to FIG. 2, the workstation again consists of the debiting board 1, the sliding needle 2 with the closing wire 3, the counter-holding needle 5 and a counter-rail 6. The needle 2 also has 2 hook spaces 8.10.

Compared to Fig. 1, this job has two piercing needles 16,17 for guiding the threads 18,19. The hook space 8 detects fibers of the fleece 7 and the thread 18, while the hook space 10, the thread 19 is detected, when returning the needle 2 but is already closed again by the closing wire 3 and thus can not detect fibers. There are formed at each cycle two Fadenmaschen 20,21 and a nonwoven mesh 22.

In Figure 3 a well constructed in a known manner with a debossing board 1, a counter-holding needle 5 and a counter-holding rail 6 job of a nonwoven-thread stitching machine is shown. Upon movement of the needle 2 in the tee position of the hook space 10 from the thread 23, a long half-mesh 24 and the hook space 8 from the thread 25, a short half-stitch 26 is formed ,

Thus, on the needle shaft, there is a short half-stitch 26 from the hook space 8) and a long half-stitch 24 (from the hook space 10) and one half-stitch 27 previously formed from the hook space 10. Upon reaching the knock-down position, the short half-stitch 26 on the needle shaft and the one before formed long half-stitch 27 knocked off over the needle tip 28, while the long half-mesh 24 does not fall below the level of the needle 2 during the knocking process and is detected again in the front dead center by the slider needle 2 on renewed expulsion of the needle 2 and together with the half stitches 29 and 30 slides on the needle shaft.

This stitching process is repeated continuously so that the resulting product has stitches 31 extending over two courses and stitches 32 extending over a course of stitches.

4 shows another possible variant of the arrangement of the long stitches 33 and the short stitches 34.

Fig. 4 shows a nonwoven-filament stitching in which the stitches 33 are pulled out to lie loosely over the stitches 34.

In a subsequent roughening or Velourierprozeß they can be additionally raised.

Fig. 5 shows a schematic representation of a nonwoven-Faden-Nähgewirke that was created by alternately inserting two thread systems in the front and rear hook space of the needle after each stitch row.

This results in alternating long stitches 35, formed from a first thread system, and long stitches 36, formed from a second thread system. Similarly, short stitches 37 are formed from the second thread system alternating with short stitches 38 from the first thread system.

This type of meshing achieves a stitchstop effect that eliminates the need to incorporate fibers into the mesh. Here, in each case, the long stitches 35, 36 formed from the two thread systems break off the short stitches 37, 38.

Due to the reciprocal working of the long stitches 35, 36 made of two thread systems, the blocking effect also occurs after severing both thread systems.

It is also possible to use 3 thread systems or more for the reciprocal working of the stitches.

The formation of pile loops and the simultaneous solidification of a nonwoven fabric are possible (Fig. 6).

The job is structured in a known manner. Only the counter-holding needles were exchanged for pole plates 39, the closing point for both hook spaces 40,41 is before immersing the hook spaces in the web 42. In addition, a third hole needle 43 for guiding the suture 48 is present.

While the piercing needles 44,45 insert the pile threads 46,47 into the hook space 40 according to the chosen bindings, the suture thread 48 is inserted into e.g. Franselegung inserted through the hole needle 43 in the hook room41. The sewing thread 48 comes due to its binding is not in contact with the pole plate 39 and serves to solidify the web 42 or other presented unverfestigter fibrous elements such. B. yarn sheets or prefabricated fabrics. The pile threads 46,47 are added

appropriate choice of binding placed over the pole plate 39 and form the Polhenkel 49,50. By means of the two hole needles 44, 45 used in the example, twice the number of pole limbs per unit area can be formed compared to the previously customary one thread system for the pile formation. Increasing the polar density significantly contributes to improving the product quality. It can also be colored patterns and / or surfaces with different polar density (depending on the thread feeder) can be achieved.

The Polhenkel 49,50 can by appropriate means additional treatments z. As roughening, shearing, cutting are subjected.

It also corresponds to the invention when the pile threads 46,47 inserted into the hook space 41 and the sewing thread 48 in the hook space 40 or when combinations thereof are used.

It is also possible, instead of the Polplatinen 39 use counter-holding needles and not to form a pole. Then the three thread systems can be used to solidify and pattern the sheet.

In Figure 7, the job is constructed as usual. Transverse threads 52 are fed to the front delivery plate 51, whose evasive movement towards the front-the puncturing of the slide needles 53 -is limited by counter-holding needles 54.

Löchnadeln 55,56 lead the sewing threads 57, 58 while a known stuffing 59 promotes the pile fleece 60 and inserts into the hook space 61 of the needle 53. In the hook space 62, the sewing threads 57, 58 are inserted.

When the slider needle 53 is in the front position, the pile fleece 60 is inserted into the hook space 61 through the stuffing device 59. At the same time put the needles 55,56 the sewing threads 57, 58 according to the default in the hook space 62 a. In the reverse gear of the needle 53, the closing wire 63 moves so that successively the hook space 62 and the hook space 61 are closed. On further reverse, the slider needle 53 slides with the hook spaces 62,61 closed by the closing wire 63 under the half stitches 64, 65, 66, which are retained by the previous stitching cycle on the needle shank 59, and are retained by the tee boards 51 until the half stitches 64 , 65,66 are dropped together over the tip of the needle 53 and form stitches with the new half-stitches now hanging in the hook spaces 61,62. The sewing threads 57, 58 form stitches 67, 68, in which the transverse threads 52 are integrated, thus resulting in a fabric. The fibers of the Polvlieses form on the one hand mesh 69, on the other hand tufts 70th

It is also possible according to the inventive method, instead of the supply of fibers in the hook spaces to provide the supply of threads. In this case, two or only one thread can be supplied.

If additional pole plates are used, pole formation is also possible. This Polplatinen have in a known manner a cutting edge or perform a high-frequency, short-stroke movement, so that the hanging on the Polplatinen pole loops are cut. But it is also possible to work with fixed boards and these associated knives.

The method according to the invention also makes it possible to arrange loops on both sides.

Claims (8)

T. A process for producing a textile fabric in which the stitches are formed from fibers and / or threads, characterized in that the wales consist of at least two superposed mesh layers and the mesh legs of the outer mesh layers are longer than the mesh legs of the inner mesh layers. 2. The method according to item!, Characterized in that the mesh feet of the mesh of all mesh layers are rooted in the same puncture channel and the mesh heads of the stitches of all mesh layers are tied by the next course. 3. The method according to item 1, characterized in that the mesh feet of the meshes of all mesh layers are rooted in the same puncture channel and the mesh heads of the stitches of a mesh layer are tied by the next course, the mesh heads of the meshes of further mesh layers through every second or through further courses. 4. The method according to item 1, characterized in that alternately from one row to the other mesh heads of the stitches of a layer of a layer in the next, the mesh heads of the stitches of the other mesh layers in the next but one or in further courses are set. 5. The method according to item 1, characterized in that the over two or more courses extending stitches are tied tightly or more or less tight than the stitches that extend over a row of stitches. 6. The method according to item 1, characterized in that the mesh webs of the meshes of one or all mesh layers are formed on the right side of the goods to Polschlingen. 7. The method according to item 1, characterized in that the threads forming the mesh layers change from the inner to the outer mesh layer or vice versa. 8. The method according to item 1, characterized in that the inner and / or outer mesh layers are formed of shrinkable material.