MXPA98005267A - Structured textile material which consists of at least two base vellones and, process for its manufacture - Google Patents

Abstract

The invention relates to a structured textile material of at least two different non-woven fleeces (1, 2) treated with needles, in which the base fleeces have a structure (4; 5, 6) that is obtained by the treatment with needles when less one of the sides, in which the needles that are used for the structuring by means of needles are rake or crown needles and the depth of the rake or of the beards is selected so that when penetrating they are completely filled with the fibers of the fleece ( 1, 2) base that faces the needles and, in that the textile presents in the drawing, in the bottom and in the reverse pure fibers not mixed

Description

-STRUCTURED TEXTILE MATERIAL WHICH CONSISTS OF WHEN LESS TWO VELLONES BASE AND, PROCESS FOR ITS MANUFACTURE Description of the Invention Technical field A structured textile material consisting of at least two different base fleeces is used in particular as a textile for cleaning purposes. STATE OF THE ART A textile fabric for cleaning based on a structured textile material consisting of at least two different base fleeces is known from the German patent application WO 94 23 634. In the German patent application WO 90 14 039 A textile surface material is also known, which consists of a fleece from which a multiplicity of thread loops or fiber ends protrude by needling. In the British patent document GB 2 162 213 a process for its manufacture is disclosed. In this, the structures are manufactured by needle-treating a fleece, whereby the fibers or filaments are pulled out from the opposite surface by means of hook needles, due to which the structures consist mainly of the material of the opposite surface. The disadvantage of structured textile materials from at least two different non-compacted nonwoven fabrics hitherto known lies in that already by means of the needle treatment of the two non-compacted base fleeces a mixed colored base fleece is produced on the side of the exit of the perforation. Also the elaboration of the structures through the fibers of a base fleece through the other base fleece by means of needles produces other mixing effects that cause the finished textile to have an ugly appearance and the specific use properties of the fiber material are reduced. of a base fleece. The task consists of creating a structured textile material consisting of at least two different base fleeces in which intermingling of the fibers is avoided. DETAILED DESCRIPTION According to the invention, the base fleeces have a structure that is obtained by means of the needle treatment on at least one of the sides, wherein the needles used for the needle structuring treatment are rake or needle needles. crown and, the depth of the rake or the beards is chosen in such a way that during the perforation they are completely filled with fibers of the base fleece facing the needles and, being that the pattern, the bottom and the back of the textile present pure fibers not mixed. A textile material with these characteristics has the advantage that during the structuring, the specific use properties of the fiber material of a base fleece are conserved. In the case that the base fleeces have different colors, pure colors are obtained in the drawing, in the background and in the reverse. By this it is also possible to create optical effects. To increase the tear strength, the base fleeces having meltable fibers can be glued to one another, and the bonding of both base fleeces is further reinforced by the activation of the vertically placed fusible fibers. In principle, all the processes and all the known binders can be used for bonding, while those which provide good adhesion and reduced stiffening of the textile material, and which admit a wash resistance of at least 60 ° C, are preferred. better still 95 ° C. Conveniently at least one base fleece has meltable fibers whose properties are selected in such a way that they are not activated during sticking. By this it is possible to provide the desired structures by means of needle treatment to the unbonded base webs.

For bonding both base fleeces it is also possible to introduce between the two base fleeces having meltable fibers an intermediate layer of material that allows the bonding of both base fleeces, in particular an adherent fleece, being able to effect the union between both base fleeces and the intermediate layer by activating the fusible fibers and the intermediate layer. Although there is a risk that the needles insert parts of the intermediate layer into the structure, this may eventually even be desirable and the tear strength increases. Even though the choice of the sides of the base fleeces to be joined is of no importance in the case of the present invention, it is convenient if they face one another the outlet sides of the perforations of the base fleeces reinforced on one side by treatment with needles To accentuate the effect of the structures, the base fleeces can be made of materials with different properties, in particular with regard to the cleaning capacity. A process according to the invention for the manufacture of a structured textile material consisting of at least two different base fleeces with unilateral or bilateral structures produced by needle treatment, in which the textile has pure fibers not intermixed in the pattern, the bottom and on the reverse, consists in carrying out a bonding of the base fleeces with needle-treated fusible fibers without activating the fusible fibers, in which a unilateral or bilateral structural treatment with needles is then carried out and, where the meltable fibers are activated after the structural treatment with needles. In comparison with a textile material of two different fleeces intermingled with each other by treatment with needles, it has the advantage that the base fleeces do not mix until structuring. The necessary resistance of the base fleeces is obtained by the treatment with needles separately from the base fleeces before the glueing. Another process for the manufacture of a structured textile material consisting of at least two different base fleeces with unilateral or bilateral structures produced by needle treatment, in which the textile presents pure fibers not intermixed in the pattern, in the background and in the reverse, is to introduce between the two base fleeces treated with needles having meltable fibers an intermediate layer of a material that allows the bonding of both base fleeces, in particular an adherent fleece, before entry to a machine for structuring with needles, in jointly submitting both base fleeces and the intermediate layer to a unilateral or bilateral structuring by needles, to then establish the union of both base fleeces and the intermediate layer by activating the fusible fibers and the intermediate layer.- ~. This procedure is particularly suitable for unilateral structuring. However, it can also be applied for bilateral structuring if the first unilaterally produced pattern generates so much stability that a second step is possible without the layers moving relative to one another. In order to obtain the best possible purity of the fibers, the process should conveniently be carried out in such a way that the rake or crown needles used to effect the structuring by needles when penetrating are completely filled with the fibers of the base fleece facing the fibers. needles BRIEF DESCRIPTION OF THE DRAWING A textile material according to the invention is shown in the drawing. Figure 1 shows a cut through the textile material, and Figure 2 shows a plan view on a bilaterally structured textile material. Embodiment of the invention From two nonwovens 1, 2 base with treatment by different needles, represented in figure 1, having the desired weight and the desired material properties, first a laminate is produced comprising the two nonwovens 1, 2 This laminate consists therefore of two layers of pure material. Both fleeces 1, 2 base are glued to each other, being that there is a zone 3 of glue. The glue zone 3 can also be an adherent fleece. During the gluing process, an activation of the meltable fibers that are contained in both nonwovens 1, 2 is prevented, so that the manufacture of the structures 4 can then be carried out by means of needle treatment. The structures are produced by means of rake or crown needles on a structuring machine by means of needles, such as Dilo, Di-Loop or others. For this purpose it will be necessary to adjust the depth of the rake or of the beards to the amount of fibers available on the inlet side of the perforations to the fleece, so that they are completely filled with the fibers of the fleece. Then the structured laminate is thermally fixed. By doing this, the meltable fibers contained in the base fleece are activated. These connect with each other to the other fibers and increase the resistance of the base fleeces. Since the individual base fleeces are treated with needles and the laminate by needles, fusible fibers are pulled according to their proportion in the fiber mixture transversely through the laminate, after the activation the transverse stability or tear resistance of the fiber is increased. Textile material. In the case of using an adherent fleece 3 disposed between the fleeces 1, 2 base it is possible to introduce the two fleeces 1, 2 base together with the fleece 3 adherent in the machine of structuring by needles, to structure the three layers with each other by treatment with needles. In the case of a sufficient resistance of the laminate against the possibility of displacement of the individual layers due to the structure 4 introduced by means of needle treatment, it is possible to turn the laminate and bring it back to the machine. Then the meltable fibers in both base fleeces are activated in a single step, as well as the adherent fleece, for the lamination of both fleeces 1, 2 base. This is immediately possible if the material of the meltable fibers and the adherent fleece material are adapted to each other to correspond to the required activation conditions. Both ways of proceeding then make it possible to introduce structures 5, 6 on both sides of the textile material by means of two structuring processes, figure 2. These structures 5, 6 can be interrupted longitudinally extending strips, which have a lateral safety separation d. at least 5 mm, to avoid an overlap of the needle structure. The structures 5 are effected by treatment by needles from the side facing the. Observer made the opposite side to the observer, so that only slots can be seen. The structures 6 are made by treatment by needles from the opposite side to the observer to the side facing the observer, so that in this case you can see the bundles of fibers protruding from the base fleece. The invention has proven its effectiveness in particular in the case of the production of drawings with pure colors from two base fleeces of different color. If in a laminate of two colored base fleece treated with needles, a drawing is introduced unilaterally by means of a needle structuring machine, then, depending on the selected side to effect the penetration of the structuring needles, in the case of, for example, a red fleece and a blue fleece treated with needles, the following product results: Side of the Side of penetration red blue penetration Drawing / red blue structuring Background around blue red drawing Back red blue All colors appear without mixing. If it is structured bilaterally, that is, if both sides are structured by needles along the width of the material in alternate form with sectors of strips in two stages of work, then a product is obtained that is structured alternately on the sides upper and lower corresponding to these sectors of fringes. In this the structuring is red on one side and blue on the other side. The color of the background and the reverse in each case is like the one indicated in the preceding table.

The unstructured spaces 7 with width across the sectors 5, 6 of opposite strips correspond in color to that of the base fleeces before being fed to the structuring machine by needles.

Claims (7)

1. CLAIMS Textile material comprising at least two base fleeces with different treatment by needles, in which the base fleeces have a structure that is obtained by the treatment with needles of at least one of the sides, in which the needles used for the structuring by means of needles they are rake or crown needles and the depth of the rake or barbs is selected in such a way that when penetrating they are completely filled with the fibers of the base fleece facing the needles, being that the textile presents pure unmixed fibers in the drawing, in the background and in the reverse.
2. Textile material in accordance with the claim 1, which is characterized by the fact that the base fleeces having meltable fibers are stuck together and that the union of both base fleeces is further reinforced by the activation of the meltable fibers.
3. Textile material in accordance with the claim 2, which is characterized by the fact that when less a base fleece has meltable fibers whose properties are chosen in such a way that they are not activated during the glueing. .
4. Textile material according to claim 1, characterized in that an intermediate layer of a material that allows a glueing of both base fleeces, in particular an adherent fleece, and of a nonwoven fleece, is introduced between both base fleeces having fusible fibers. that the union of both base fleeces and the intermediate layer occurs by activating the intermediate layer and the meltable fibers.
5. Textile material according to one of claims 1 to 4, characterized in that the penetration sides of the reinforced base fleeces by needle treatment on the one hand face each other.
6. Textile material according to one of claims 1 to 5, characterized in that the base fleeces have different material properties, in particular with regard to the cleaning capacity.
7. 7. Process for the manufacture of a structured textile material consisting of at least two different base fleeces with unilateral or bilateral structures produced by treatment with needles, in which the textile presents pure fibers not intermixed in the pattern, in the background and in the reverse, which is characterized by the fact that before the entrance to the needle structuring machine between both base fleeces having meltable fibers an intermediate layer of a material is introduced which allows a bonding of both base fleeces, in particular a adherent fleece, that both the base fleece and the intermediate layer are jointly subjected to a unilateral or bilateral structuring by needles, and that the union of both base fleeces and the intermediate layer is then established by the activation of the meltable fibers and of the fleece fibers. the intermediate layer. Procedure according to claim 7 or 8, which is characterized by the fact that the rake or crown needles used for the structuring by needles are completely filled with the fibers of the base fleece facing the needles upon penetration.