DE102005059010A1 - Thread for producing special effects comprises a core thread and a cover which consists of a thermoplastic material with embedded leather particles - Google Patents

Abstract

The thread (1) for producing special effects comprises a core thread (2) and a cover (3) which consists of a thermoplastic material (4) with embedded leather particles (5). An independent claim is also included for a textile product containing the proposed thread.

Description

The The present invention relates to an effect yarn having a core thread and a jacket comprising a thermoplastic material. Farther The invention relates to a fancy yarn containing such Textile product and a method for producing such Fancy yarn.

fancy yarns come for example in the decoration area, to the interior in motor vehicles or in the manufacture of textile products like woven or knitted products for use.

Such fancy yarns are made by extrusion jacketing, with a yarn or twine core yarn covered with a thermoplastic material. Such are for example DE 33 01 270 A1 a sheathed fiber or filament material and a method for its production is known, wherein the sheath consists of a fluorine-containing polymer to obtain a simultaneously tensile and elastic and chemical and temperature resistant fiber or filament material. During manufacture, the fiber or filament material is drawn at high speed through a central opening in an extrusion tube tool. Here, the fluorine-containing polymer is extruded in the form of a tube such that the tube encases the central fiber or filament material, whereupon the coated fiber or filament material is quenched immediately after exiting the tube tool.

It is also known to provide effect yarns for ornamental and decorative purposes with color or texture effects. Out DE 41 41 955 A1 For example, it is known to embed decorative grid-woven fibers of, for example, carbon in a plastic layer to achieve attractive iridescent coloring.

Out DE 199 15 298 A1 is a generic fancy yarn with a core thread and a sheath of thermoplastic material is known in which the surface of the core thread designed according to the desired effect and the sheath is formed so transparent that the enclosed by the sheath core thread is visible, which in particular with regard to aging properties, light resistance and lightfastness more favorable properties compared to effect yarns with colored thermoplastic sheathing can be achieved. The thermoplastic material can be applied in particular to the core thread in the foamed state.

The The aforementioned materials have in common that achievable Color and / or structure effects limited to visual effects are, with mechanical surface properties (For example, the roughness) of the produced on the respective material Decorative elements by improving the performance properties intended thermoplastic sheath can be determined. Especially are about original existing characteristic surface properties of the fiber structures no longer noticeable after sheathing.

It The object of the present invention is to provide a fancy yarn which in terms of realizable effects a greater variety of design allows without the use characteristics, in particular with regard to Aging properties, lightfastness and light fastness, impaired become.

These Task is performed according to the characteristics of claims 1 or 9 solved.

For this in an effect yarn according to the preamble of claim 1 the sheath incorporated in the thermoplastic material Leather particles on.

As a result the incorporated in the thermoplastic material leather particles become the effect yarn in terms of the performance characteristics advantageous effects of the shell completely or largely preserved, while at the same time the design variety regarding the effect yarn and the structures made therefrom as a result of the modification the pressure impression and / or smell of the sheath is increased.

through such a fancy yarn can, for example, after processing to a textile, in particular knitted or woven product or a other decorative items, both in the test print as be achieved in the smell leathery effect, according to the invention with the favorable usage properties due to the coating with the thermoplastic material (in particular in terms of aging properties, light resistance and light fastness) combined.

The Invention is not limited to particles of tanned leather, but the incorporated in the thermoplastic material admixture may also contain particles of raw or untreated animal skin.

Since in the effect yarn according to the invention, the inherent strength easily over the correspond de interpretation of the core thread can be adjusted, the effect yarn is particularly well suited as a warp knit material, so that from the effect yarn and fabrics with the desired properties in terms of test impression and / or smell, and any textile products can be produced. In particular, woven or knitted textiles can be completely or partially formed from the effect yarn according to the invention and thus be provided with the desired effects.

According to one preferred embodiment of Invention is the relative weight fraction of the leather particles in the sheath 1 to 60 percent by weight.

The Sheath may further depending on the intended use of the effect yarn according to the invention a UV stabilizer and / or a matting agent and / or a dye exhibit.

Of the Soul thread can be used as a commercial multifilament or twisted, z. B. of a polyester. According to one preferred embodiment For example, the core thread is a monofilament (i.e., as a single fiber existing thread), which results in a particularly high intrinsic strength can achieve.

According to one another preferred embodiment is the surface the soul thread designed according to a desired effect, and the Sheath is formed so transparent that the of Sheath enclosed soul thread is visible.

The The invention further relates to a textile product, in particular woven or Knitted product, in which at least one effect yarn with the above Characteristics that are present individually or in combination with each other can, is incorporated. The textile product can in particular also completely the inventive effect yarn be formed.

• – Einarbeiten einer Beimischung in granularer oder pulverisierter Form (zum Beispiel Lederstaub) in einen thermoplastischen Werkstoff;
• – Plastifizieren des die Beimischung enthaltenden thermoplastischen Werkstoffs;
• – Optionales Granulieren;
• – Optionale Zugabe weiterer Komponenten (zum Beispiel UV-Stabilisatoren, Mattierungsmittel, Färbemittel etc.); und
• – Zuführung des Granulats bzw. der plastifizierten Mischung zu einer Ummantelungsanlage zur Extrudierung und Ummantelung eines Seelenfadens.

A method used to produce the effect yarn according to the invention preferably comprises the following steps:

• Incorporation of an admixture in granular or powdered form (for example, leather dust) into a thermoplastic material;
• - plasticizing the admixed thermoplastic material;
• - Optional granulation;
• Optional addition of further components (for example UV stabilizers, matting agents, colorants, etc.); and
• - Supplying the granules or the plasticized mixture to a jacket plant for extruding and sheathing a core thread.

Further Embodiments of the invention are the following description and the dependent claims refer to.

The Invention will be described below with reference to preferred embodiments with reference to the attached Illustrations explained.

It demonstrate:

1 a schematic cross-sectional view for explaining the structure of an effect yarn according to the invention according to a preferred embodiment;

2 one to 1 analog representation according to another embodiment of the invention; and

3 a preferred method for producing the effect yarn according to the invention.

According to the schematic sketch in 1 has an inventive effect yarn 1 a soul thread 2 and a sheath surrounding it 3 on.

At the soul thread 2 it can be either a commercially available multifilament or a twisted yarn or a monofilament. Furthermore, the soul thread 2 (Especially in connection with a transparent design of the sheath 3 ) have a surface designed to achieve desired effects, for example a variable and opaque coloring.

The jacket 3 has a thermoplastic material 4 on, which consists of the embodiment of thermoplastic polyurethane. However, the invention is not limited to thermoplastic polyurethane as a material, but it can in principle also other thermoplastics, such as polyethylene, polypropylene or polycarbonate are used. The thermoplastic material may be either colorless, colored or, in particular, to achieve desired effects such as coloring by the core thread 2 , also be transparent.

The jacket 3 also has leather particles 5 on which in 1 indicated only schematically and in granular or powdered form, preferably as leather dust, in the thermoplastic material 4 incorporated, in particular dispersed. It has been shown that the relative weight fraction of leather particles 5 in the sheath 3 preferably one to sixty percent by weight is. The relative proportion by weight is adjusted so that, depending on the purpose and the type of leather used and grain size of the leather particles or leather dust used on the one hand the desired expression of the leather-like tactile and / or olfactory impression is realized and on the other hand, the chemical properties of the thermoplastic material in the shell 3 are sufficiently pronounced.

According to another, in 2 schematically illustrated embodiment of a fancy yarn 1' shows the sheath 3 further additives 6 for obtaining desired effects, for example UV stabilizers, matting agents and / or colorants (for example a mixed colorant concentrate, so-called "color masterbatch"). Incidentally, the effect yarn corresponds 1' from that one 1 , so that the same reference numerals are used for the other components and their detailed description is omitted.

The core thread according to the invention 2 can according to 1 and 2 a round cross-section or (depending on the tool design in the casing system) have any other, for example, oval or square cross-section.

The effect yarn according to the invention is preferably preparable by means of a method as described below with reference to the in 3 illustrated flow chart 100 is explained.

First, in step S110, in the case of the sheathing 3 used, thermoplastic material 4 (For example, thermoplastic polyurethane) mixed depending on the desired expression of the effect to be achieved appropriate amount of leather dust, including the leather dust in a suitable manner in the thermoplastic material 4 is dispersed.

The thermoplastic-leather dust mixture thus produced is then preferably first processed into a granulate, to which the thermoplastic-leather dust mixture is preferably first plasticized in a step S120, extruded as a strand and then granulated in a step S130. Instead of a strand-like extrusion of the thermoplastic-leather dust mixture, another plasticizing or shaping process, for example film pressing or injection molding, can also be used. The granules thus prepared are then optionally added further, for example, the above components 6 submitted in a step S140 and any drying in a step S150 a jacket plant in which the thermoplastic part of the mixture produced in an extruder plasticized and the core thread 2 is sheathed by means of a suitable tool.

According to one alternative method may be the admixture of example Leather dust containing thermoplastic material after the successful Plastification in step S120 also directly or after previous Add additional components according to step S140 the sheathing to be supplied to the sheath of the soul thread. Furthermore, as an alternative to the method described above, the granular or powdered admixture of, for example, leather dust also incorporated in another way, for example the thermoplastic Material to be supplied only in the sheathing plant.

According to one another embodiment the provided with the admixture of, for example, leather dust thermoplastic Material before application to the core thread by adding a chemical or physical blowing agent (preferably with a relative proportion in the range of 0.1 to 5 weight percent), whereby the sheath final strength is increased compared to a non-foamed casing.

In summary is created by the invention, an effect yarn, which is independent of any visual effects a characteristic touch impression and / or Has odor. Thus, regarding the realizable effects a greater variety of design the effect yarn allows without that achieved by means of the thermoplastic sheath Performance characteristics are impaired.

Claims (12)

Fancy yarn with a core thread ( 2 ) and a thermoplastic material ( 4 ) sheath ( 3 ), characterized in that the sheath ( 3 ) in the thermoplastic material ( 4 ) incorporated leather particles ( 5 ) having. Fancy yarn according to claim 1, characterized in that the relative proportion by weight of the leather particles ( 5 ) in the casing ( 3 ) Is 1 to 60% by weight. Fancy yarn according to claim 1 or 2, characterized in that the sheath ( 3 ) further comprises a UV stabilizer and / or a matting agent and / or a colorant. Fancy yarn according to one of the preceding claims, characterized in that the thermoplastic material ( 4 ) thermoplastic polyu is ethane. Fancy yarn according to one of the preceding claims, characterized in that the core thread ( 2 ) is made of a monofilament or other high-strength fiber. Fancy yarn according to one of the preceding claims, characterized in that the surface of the core thread ( 2 ) designed according to a desired effect and the sheath ( 3 ) is formed so transparent that the of the sheath ( 3 ) enclosed soul thread ( 2 ) is visible. Textile product, in particular woven or knitted product, characterized in that at least one effect yarn after a of the preceding claims incorporated in the textile product. Textile product according to claim 7, characterized that it is complete from fancy yarn according to a the claims 1 to 6 is formed. A method of producing a fancy yarn, comprising the steps of: a) incorporating an admixture containing powdered leather dust and / or tanned or untanned animal skin components in granular or powdered form into a thermoplastic material; b) plasticizing the admixed thermoplastic material; c) feeding the plasticized mixture to a jacket plant for extruding and sheathing a core thread ( 2 ). Method according to claim 9, characterized in that that at step b) granulating the plasticized mixture connects, wherein the granules thus obtained in step c) of the sheathing plant supplied becomes. Method according to claim 9 or 10, characterized that before being fed to the jacket plant other components such as UV stabilizers, matting agents and / or colorants may be added. Method according to one of claims 9 to 11, characterized in that the mixture before application to the core thread ( 2 ) is foamed by adding a chemical or physical blowing agent.