EP0610845A1 - Double-faced circular knitwear - Google Patents

Double-faced circular knitwear Download PDF

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Publication number
EP0610845A1
EP0610845A1 EP94101798A EP94101798A EP0610845A1 EP 0610845 A1 EP0610845 A1 EP 0610845A1 EP 94101798 A EP94101798 A EP 94101798A EP 94101798 A EP94101798 A EP 94101798A EP 0610845 A1 EP0610845 A1 EP 0610845A1
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EP
European Patent Office
Prior art keywords
double
knitted fabric
monofilaments
weight
yarns
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94101798A
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German (de)
French (fr)
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EP0610845B1 (en
Inventor
Alfons LÖFFLER
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Hoechst AG
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Hoechst AG
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/08—Upholstery, mattresses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/48—Upholstered article making
    • Y10T29/481—Method
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/425—Including strand which is of specific structural definition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/488—Including an additional knit fabric layer

Definitions

  • the present invention relates to a double-faced circular knitted fabric with two outer knitted webs and an intermediate spacing structure, preferably for upholstery and cladding purposes, with a particularly advantageous combination of recess behavior, textile surface grip and formability.
  • the spacing structure consists of web-connecting stitches made of monofilament elastic threads, which are alternately meshed with a knitted web.
  • the monofilaments that form the stitches connecting the web surfaces and thus function as spacer threads should have a thickness of 0.08 to 0.14 mm at a web spacing of approximately 7 mm.
  • the springback of the upper knitted web is formed by spacer tapes made of plastic film divided into strips with a thickness of approximately 0.1 mm and a width of 1-3 mm.
  • These spacer tapes should preferably be made from polypropylene.
  • the knitted spacer fabric described below can substantially improve the deformability, the feel of the textile surface and at the same time simplify and reduce the cost of production and facilitate disposal by recycling.
  • the present invention thus relates to a double-faced circular knitted fabric with two concentric knitted webs and an intermediate spacing structure, which is characterized in that it has, as spacer threads, optionally textured coarse-fibrillated multifilament yarns, optionally in combination with monofilaments, that the distance between the two knitted webs is 0.3 to 8 mm is that the mesh density corresponds to a machine pitch from E 16 to E 32 and that the density of the spacer threads is between 150 and 250 threads per cm2.
  • the optionally textured coarse-fibril multifilament yarns contained in the double-faced circular knitted fabric according to the invention have a yarn titer of 50 to 250 dtex, preferably from 100 to 200 dtex and a single titer of 5 to 100 dtex, preferably from 10 to 20 dtex.
  • the monofilaments contained in the double-faced circular knitwear have a titer of 20 to 150 dtex, preferably 70 to 110 dtex.
  • All yarns for the double-layer circular knitwear preferably consist of the same polymer material.
  • the double-faced circular knitted fabric according to the invention optionally contains textured coarse-fibrillated multifilament yarn as spacer threads and, if appropriate, combined with these, monofilaments.
  • the spacer construction can thus only have coarse-fibril multifilament yarn, in particular textured coarse-fibril multifilament yarn, or, which has certain advantages described below, a proportion of monofilaments side by side.
  • the double-faced circular knitted fabric according to the invention preferably has a right-left stitch structure.
  • the right-left mesh structure also includes their variants, such as plated, openwork, ribbed, offset, wave, catch, pimple and jacquard patterns.
  • a preferred double-faced circular knitted fabric according to the invention has a basis weight of 150 to 1400 g / m2, preferably 200 to 500 g / m2, and the vertical distance between its two knitted webs is 0.3 to 8 mm, preferably 4 to 6 mm. Furthermore, a double-surface circular knitted fabric according to the invention is preferred, in which the knitted webs have a mesh density which corresponds to a machine division of E 18 to E 20.
  • a particularly advantageous combination of rebound behavior and textile surface feel and formability results if 50 to 80% by weight, preferably 60 to 70% by weight of the spacer threads, if appropriate textured coarse-fibrillated multifilament yarns and accordingly 20 to 50% by weight, preferably 30 to 40% by weight are monofilaments.
  • the arrangement of the optionally textured coarse-fibril multifilament yarns and the monofilaments in the spacing structure can be done in different ways. It is important that the monofilaments and any textured coarse-fibrillated multifilament yarns are statistically evenly mixed and distributed over the area of the spacer fabric.
  • An expedient arrangement possibility is that the monofilaments and the possibly textured yarns are integrated or meshed next to each other in each row in the spacing structure.
  • Another useful arrangement possibility is that the optionally textured coarse-fibrillated multifilament yarns and the monofilaments follow one another alternately in the spacing structure.
  • the spacer construction has a total thread density of 150 to 250, preferably 180 to 200 spacer threads per cm2.
  • the monofilaments used as spacer threads expediently have a titer of 20 to 150 dtex, preferably from 70 to 110 dtex
  • the optionally textured coarse-fibril multifilament yarns used as spacer threads expediently have a yarn titer of 50 to 250 dtex, preferably from 100 to 200 dtex and a single titer of 5 to 100 dtex, preferably from 10 to 20 dtex.
  • Textured multifilament yarns that serve as spacer threads are air or false wire textured.
  • FIGS 1 to 3 illustrate schematically and by way of example two embodiments of the double-faced circular knitted fabric according to the invention.
  • FIG. 1 shows schematically a cylindrical double-layer circular knitted fabric with the two concentrically located knitted webs (1) and (1 ') and the spacer threads (2) connecting them and indicated as a zigzag line.
  • FIG. 2 shows a section of a double-faced circular knitted fabric according to the invention in an oblique view with the two outer knitted webs (1) and (1 '), the direction lines (12) and (12') shown in dotted lines on these, which indicate the position of the wales, and the spacer threads made of monofilaments (3) and textured multifilament yarns (4) running back and forth between the knitted webs (1) and (1 ').
  • the monofilaments and the textured multifilament yarns are bound or meshed next to each other in each row.
  • FIG. 3 shows a section of a double-layer circular knitted fabric according to the invention in an oblique view with the two outer knitted webs (1) and (1 '), the direction lines (12) and (12') drawn in dotted lines on these, which indicate the position of the wales, and the spacer threads made of monofilaments (3) and textured multifilament yarns (4) running back and forth between the knitted webs (1) and (1 '), as well as the spacer threads (5), which are fully drawn for clarification, and which extend between adjacent wales.
  • the monofilaments and the textured multifilament yarns are alternately bound or meshed in the knitting in each stitch direction and there is a transverse stabilization by the threads changing the wales (5).
  • the yarns of the two knitted fabrics and the monofilaments and, if necessary, textured Spacing construction yarns preferably consist of polyesters or polyolefins.
  • polyester material In principle, all known types suitable for fiber production can be considered as polyester material.
  • Such polyesters consist predominantly of building blocks which are derived from aromatic dicarboxylic acids and from aliphatic diols.
  • Common aromatic dicarboxylic acid building blocks are the divalent residues of benzenedicarboxylic acids, especially terephthalic acid and isophthalic acid;
  • Common diols have 2-4 carbon atoms, with ethylene glycol being particularly suitable.
  • Modified polyesters preferably contain at least 85 mol% of ethylene terephthalate units. The remaining 15 mol% then build up from dicarboxylic acid units and glycol units, which act as so-called modifying agents and which allow the person skilled in the art to specifically influence the physical and chemical properties of the filaments produced.
  • dicarboxylic acid units are residues of isophthalic acid or of aliphatic dicarboxylic acid such as e.g. Glutaric acid, adipic acid, sebacic acid;
  • modifying diol residues are those of longer-chain diols, e.g. of propanediol or butanediol, of di- or tri-ethylene glycol or, if present in small quantities, of polyglycol with a molecular weight of approximately 500-2000.
  • Particularly preferred are polyesters which contain at least 95 mol% of ethylene terephthalate units, especially those made from unmodified PET.
  • the spacer fabrics according to the invention made from such polyesters, in particular from polyethylene terephthalate, are not easily ignited.
  • the flame retardant effect can be further enhanced by using flame retardant modified polyesters.
  • flame-retardant modified polyesters are known. They contain additions of halogen compounds, in particular bromine compounds, or, which is particularly advantageous, they contain phosphorus compounds which are condensed into the polyester chain.
  • flame-retardant spacer fabrics according to the invention contain monofilaments and yarns made of polyester, which in the chain are components of the formula wherein R is alkylene or polymethylene with 2 to 6 C atoms or phenyl and R1 is alkyl with 1 to 6 C atoms, aryl or aralkyl, contained in condensed form.
  • R is alkylene or polymethylene with 2 to 6 C atoms or phenyl and R1 is alkyl with 1 to 6 C atoms, aryl or aralkyl, contained in condensed form.
  • ethylene and R 1 are preferably methyl, ethyl, phenyl, or o-, m- or p-methylphenyl, in particular methyl.
  • polyesters contained in the double-faced circular knitted fabric according to the invention expediently have a molecular weight corresponding to an intrinsic viscosity (IV), measured in a solution of 1 g of polymer in 100 ml of dichloroacetic acid at 25 ° C., from 0.5 to 1.4.
  • IV intrinsic viscosity
  • Substituted polyolefins are also suitable as polyolefins from which the yarns of the double-layer circular knitted fabric according to the invention can be made.
  • Examples of such polyolefin materials are polyethylene, polypropylene, polyvinyl chloride and polyacrylonitrile.
  • Preferred polyolefin yarns are made of polypropylene.
  • “Circular knitwear” within the meaning of this invention is of course also to be understood as broad knitted tubes and such other knitted fabrics whose construction resembles a knitted fabric, such as Round knitted fabrics.
  • Another object of the present invention is a method for producing the double-surface circular knitwear described above, in which a double-surface circular knitwear is produced on the two needle contours of the cylinder and the dial of a circular knitting machine, in which the spacer threads alternately run back and forth between the two knitted webs and in each web can be integrated or meshed, which is characterized in that on the corresponding knitting systems the needles as spacer thread either textured coarse-fibrillated multifilament yarns or optionally textured coarse-fibrillated multifilament yarns are alternately fed with monofilaments.
  • FIGS. 4a and 4b illustrate, by way of example, the steps in the production of a double-layer circular knitted fabric according to the invention.
  • the five groups (1; 2; 3; 4; 5) of short vertical lines (6; 7) lying one below the other in the figures symbolize the needles of five systems of the knitting machine, the one above the horizontal line Line group (6) the rib needles, the line group (7) below the horizontal line represent the cylinder needles.
  • the lines (8; 9) leading from needle to needle symbolize the thread path, a simple deflection (10) of the thread path on the needle means the thread in question, a loop (11) on the needle means a mesh.
  • the lines (8) in this illustration are intended to run the spacer thread on the systems 1 and 5, the lines (9) the course of the threads for the back of the goods on system 2 and the front of the goods on systems 3 and 4, on which a jacquard control of Needles, show.
  • the spacer thread on the fifth system is offset by a needle compared to the first system.
  • textured yarns When using coarse-fibrillated multifilament yarn as spacer threads, it is preferred to use textured yarns. They can be air or false wire textured.
  • the needles are preferably controlled so that a right-left structure is knitted in each of the tracks.
  • the yarn is fed in such a way that 50 to 80% by weight, preferably 60 to 70% by weight, of the spacer threads optionally textured coarse-fibrillated multifilament yarn and accordingly 20 to 50% by weight. %, preferably 30 to 40% by weight, are monofilaments.
  • a special stabilization against lateral displacement and collapse of the two knitted fabrics results if the binding is controlled in such a way that spacer threads made of monofilaments and possibly textured multifilaments alternate between the stitch chains lying in the longitudinal direction.
  • the double-faced circular knitted fabric according to the invention has a very good deformability, a pleasant feel of the textile surface and can be disposed of by recycling, in particular if all fiber materials consist of the same polymer material, without any problems. It can therefore be used with particular advantage for upholstering and cladding interiors, such as car interior linings or, especially if a flame-retardant modified polyester is used to manufacture the multifilament yarns and monofilaments, from airframes, express train compartments or public facilities.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Details Of Garments (AREA)
  • Outer Garments And Coats (AREA)

Abstract

There is described a double-face circular knit (knitwear) comprising two concentric lengths of knit webs (1,1') and an in-between spacer structure, wherein the spacer threads (2) are optionally textured coarse-filament multifilament yarns, optionally in combination with monofilaments, the distance between the two lengths of knit web is from 0.3 to 8 mm, the stitch density corresponds to a machine gauge from E 16 to E 32, and the density of the spacer threads is between 150 and 250 threads per cm<2>. Preferably, all the yarns of the double-face circular knit are made of the same polymer. Also described are the production and use of this double-face circular knit. <IMAGE>

Description

Die vorliegende Erfindung betrifft eine doppelflächige Rundstrickware mit zwei außenliegenden Gestrickbahnen und einer dazwischenliegenden Abstandsstruktur, bevorzugt für Polster- und Verkleidungszwecke, mit einer besonders vorteilhaften Kombination von Rücksprungverhalten, textilem Oberflächengriff und Formbarkeit.The present invention relates to a double-faced circular knitted fabric with two outer knitted webs and an intermediate spacing structure, preferably for upholstery and cladding purposes, with a particularly advantageous combination of recess behavior, textile surface grip and formability.

Aus dem Deutschen Gebrauchsmuster G 90 16 062 ist es bekannt, für die Unterpolsterung von Sitzmöbeln und von Kleidungsstücken sowie als Unterlage für Krankenbetten ein textiles Abstandsgewirke einzusetzen, das eine verbesserte Formstabilität und bleibende Rücksprungeigenschaften hat. Dieses Ziel wird dort dadurch erreicht, daß die Abstandsstruktur aus bahnflächenverbindenden Maschen aus monofilen elastischen Fäden besteht, die abwechselnd mit je einer Gewirkebahn vermascht sind. Die Monofilamente, die die bahnflächenverbindenden Maschen bilden und damit als Abstandhalterfäden fungieren, sollen bei einem Bahnabstand von ca. 7mm eine Stärke von 0,08 bis 0,14 mm aufweisen.
Auch bei der aus der DE-C-28 51 348 bekannten doppelflächigen Kettenwirkware kam es darauf an, eine für Bettunterlagen geeignete federnd weiche Fläche zu schaffen. Diese Aufgabe wurde dort in der Weise gelöst, daß die Rückfederung der oberen Gewirkebahn durch Abstandhalter-Bändchen aus in Streifen geteilter Kunststoffolie einer Dicke von ca. 0,1 mm und einer Breite von 1-3 mm gebildet wird. Vorzugsweise sollen diese Abstandhalter-Bändchen aus Polypropylen gefertigt werden.From the German utility model G 90 16 062 it is known to use a textile spacer fabric for the upholstery of seating furniture and clothing, and as a base for sick beds, which has improved dimensional stability and permanent return properties. This goal is achieved there in that the spacing structure consists of web-connecting stitches made of monofilament elastic threads, which are alternately meshed with a knitted web. The monofilaments that form the stitches connecting the web surfaces and thus function as spacer threads should have a thickness of 0.08 to 0.14 mm at a web spacing of approximately 7 mm.
Even with the double-surface warp knitted fabric known from DE-C-28 51 348, it was important to create a resiliently soft surface suitable for bed pads. This object was achieved in such a way that the springback of the upper knitted web is formed by spacer tapes made of plastic film divided into strips with a thickness of approximately 0.1 mm and a width of 1-3 mm. These spacer tapes should preferably be made from polypropylene.

Den bekannten Konstruktionen haften aber noch Mängel an, die einem Einsatz in vergrößertem Umfang im Wege stehen.
Ein Faktor, der zunehmend an Bedeutung gewinnt, ist die Notwendigkeit, gebrauchte Materialien einwandfrei entsorgen zu können. Die Verwendung von unterschiedlichen Grundstoffen für die Garne der Gewirkebahnen und für die Abstandsstruktur bei bekannten doppelflächigen Textilmaterialien, z.B. von Polyamidgarnen für die Gewirkebahn und von Polypropylen-Abstandshaltern, ist von erheblichem Nachteil für die Entsorgung dieser Materialien.However, the known constructions still have shortcomings that prevent them from being used on an enlarged scale.
One factor that is becoming increasingly important is the need to properly dispose of used materials. The use of different basic materials for the yarns of the knitted fabrics and for the spacing structure in known double-faced textile materials, for example polyamide yarns for the knitted fabric and polypropylene spacers, is a considerable disadvantage for the disposal of these materials.

Ein weiterer limitierender Faktor ist das Erfordernis, für die Abstandhalter Folienbändchen oder Monofilamente einzusetzen. Diese Materialien werden nicht in so großem Umfang gefertigt, wie textile Synthesefasern. Ihre Herstellung und Weiterverarbeitung ist aufgrund der ihnen eigenen Steifheit technisch aufwendig und damit auch teuer. Das Einwirken derartiger steifer fadenförmigen Materialien in textile Gewirke bringt Probleme mit sich, die umso größer werden, je höher der Anteil dieser Materialien an dem gesamten Textilerzeugnis ist.
Eine weitere Eigenschaft dieser bekannten Materialien, die bei verschiedenen Anwendungen als gravierender Nachteil gilt, ist die Griffhärte der textilen Oberflächen, die als kalt und ungemütlich empfunden wird und schließlich die verringerte Verformbarkeit, die eine Anpassung der Doppelgewirke an dreidimensionale Strukturen erschwert und damit deren Einsatz für Verkleidungszwecke einschränkt.Another limiting factor is the need to use foil tapes or monofilaments for the spacers. These materials are not manufactured to such a large extent as textile synthetic fibers. Their manufacture and further processing is technically complex due to their inherent rigidity and therefore also expensive. The action of such stiff thread-like materials in textile knitted fabrics presents problems, which become greater the higher the proportion of these materials in the entire textile product.
Another property of these known materials, which is considered a serious disadvantage in various applications, is the hardness of the handle of the textile surfaces, which is felt to be cold and uncomfortable, and finally the reduced deformability, which makes it difficult to adapt the double knitted fabrics to three-dimensional structures and thus their use for Restrictions for cladding.

Es wurde nun überraschend gefunden, daß man durch das im Folgenden beschriebene Abstandsgewirke eine wesentliche Verbesserung der Verformbarkeit, der Haptik der textilen Oberfläche und dabei gleichzeitig eine Vereinfachung und Verbilligung der Herstellung und eine Erleichterung der Entsorgung durch Recyclisierung erzielen kann.It has now surprisingly been found that the knitted spacer fabric described below can substantially improve the deformability, the feel of the textile surface and at the same time simplify and reduce the cost of production and facilitate disposal by recycling.

Die vorliegende Erfindung betrifft somit eine doppelflächige Rundstrickware mit zwei konzentrischen Gestrickbahnen und einer dazwischenliegenden Abstandsstruktur, welche dadurch gekennzeichnet ist, daß sie als Abstandshalterfäden gegebenenfalls texturierte grobfibrillige Multifilamentgarne, gegebenenfalls in Kombination mit Monofilamenten, aufweist, daß der Abstand zwischen den beiden Gestrickbahnen 0,3 bis 8 mm beträgt, daß die Maschendichte einer Maschinenteilung von E 16 bis E 32 entspricht und daß die Dichte der Abstandsfäden zwischen 150 und 250 Fäden pro cm² liegt.The present invention thus relates to a double-faced circular knitted fabric with two concentric knitted webs and an intermediate spacing structure, which is characterized in that it has, as spacer threads, optionally textured coarse-fibrillated multifilament yarns, optionally in combination with monofilaments, that the distance between the two knitted webs is 0.3 to 8 mm is that the mesh density corresponds to a machine pitch from E 16 to E 32 and that the density of the spacer threads is between 150 and 250 threads per cm².

Die in der erfindungsgemäßen doppelflächigen Rundstrickware enthaltenen gegebenenfalls texturierten grobfibrilligen Multifilamentgarne haben einen Garntiter von 50 bis 250 dtex, vorzugsweise von 100 bis 200 dtex und einem Einzeltiter von 5 bis 100 dtex, vorzugsweise von 10 bis 20 dtex.The optionally textured coarse-fibril multifilament yarns contained in the double-faced circular knitted fabric according to the invention have a yarn titer of 50 to 250 dtex, preferably from 100 to 200 dtex and a single titer of 5 to 100 dtex, preferably from 10 to 20 dtex.

Die in der doppelflächigen Rundstrickware enthaltenen Monofilamente haben einen Titer von 20 bis 150 dtex, vorzugsweise von 70 bis 110 dtex.The monofilaments contained in the double-faced circular knitwear have a titer of 20 to 150 dtex, preferably 70 to 110 dtex.

Vorzugsweise bestehen alle Garne für die doppelflächige Rundstrickware aus demselben Polymermaterial.All yarns for the double-layer circular knitwear preferably consist of the same polymer material.

Die erfindungsgemäße doppelflächige Rundstrickware enthält als Abstandshalterfäden gegebenenfalls texturiertes grobfibrilliges Multifilamentgarn, und ggf mit diesen kombiniert, Monofile. Die Abstandskonstruktion kann somit ausschließlich grobfibrilliges Multifilamentgarn, insbesondere texturiertes grobfibrilliges Multifilamentgarn, oder auch, was gewisse unten beschriebene Vorteile hat, einen Anteil von Monofilamenten nebeneinander aufweisen.The double-faced circular knitted fabric according to the invention optionally contains textured coarse-fibrillated multifilament yarn as spacer threads and, if appropriate, combined with these, monofilaments. The spacer construction can thus only have coarse-fibril multifilament yarn, in particular textured coarse-fibril multifilament yarn, or, which has certain advantages described below, a proportion of monofilaments side by side.

Vorzugsweise hat die erfindungsgemäße doppelflächige Rundstrickware eine Rechts-Links-Maschenstruktur.
Die Rechts-Links-Maschenstruktur beinhaltet auch deren Varianten, wie z.B. plattiert, durchbrochen, gerippt, versetzt, Welle, Fang, Noppe und Jacquard-Musterungen.The double-faced circular knitted fabric according to the invention preferably has a right-left stitch structure.
The right-left mesh structure also includes their variants, such as plated, openwork, ribbed, offset, wave, catch, pimple and jacquard patterns.

Eine bevorzugte erfindungsgemäße doppelflächige Rundstrickware hat ein Flächengewicht 150 bis 1400 g/m², vorzugsweise 200 bis 500 g/m², und der senkrechte Abstand seiner beiden Gestrickbahnen beträgt 0,3 bis 8 mm vorzugsweise 4 bis 6 mm.
Weiterhin ist eine erfindungsgemäße doppelflächige Rundstrickware bevorzugt, in der die Gestrickbahnen eine Maschendichte haben, die einer Maschinenteilung von E 18 bis E 20 entspricht.A preferred double-faced circular knitted fabric according to the invention has a basis weight of 150 to 1400 g / m², preferably 200 to 500 g / m², and the vertical distance between its two knitted webs is 0.3 to 8 mm, preferably 4 to 6 mm.
Furthermore, a double-surface circular knitted fabric according to the invention is preferred, in which the knitted webs have a mesh density which corresponds to a machine division of E 18 to E 20.

Durch die Verwendung oder Mitverwendung von grobfibrilligem Multifilamentgarn, insbesondere texturiertem grobfibrilligem Multifilamentgarn, in der Abstandskonstruktion ergeben sich besondere Vorteile im Hinblick auf eine erheblich verbesserte Formbarkeit und eine angenehmere Haptik, aber auch für die insgesamt einfachere Erzeugung und Verbilligung des Materials.The use or co-use of coarse-fibrillated multifilament yarn, in particular textured coarse-fibrillated multifilament yarn, in the spacing construction results in particular advantages in terms of significantly improved formability and a more pleasant feel, but also for the overall simpler production and cheapening of the material.

Eine besonders vorteilhafte Kombination von Rücksprungverhalten und textilem Oberflächengriff und Formbarkeit ergibt sich, wenn 50 bis 80 Gew.-%, vorzugsweise 60 bis 70 Gew.-% der Abstandshalterfäden gegebenenfalls texturierte grobfibrillige Multifilamentgarne und dementsprechend 20 bis 50 Gew.-%, vorzugsweise 30 bis 40 Gew.-% Monofilamente sind.A particularly advantageous combination of rebound behavior and textile surface feel and formability results if 50 to 80% by weight, preferably 60 to 70% by weight of the spacer threads, if appropriate textured coarse-fibrillated multifilament yarns and accordingly 20 to 50% by weight, preferably 30 to 40% by weight are monofilaments.

Die Anordnung der gegebenenfalls texturierten grobfibrilligen Multifilamentgarne und der Monofilamente in der Abstandsstruktur kann in unterschiedlicher Weise erfolgen. Wesentlich ist, das die Monofilamente und die ggf. texturierten grobfibrilligen Multifilamentgarne statistisch gleichmäßig gemischt und über die Fläche des Abstandsgewirkes verteilt sind.
Eine zweckmäßige Anordnungsmöglichkeit besteht darin, daß in der Abstandsstruktur die Monofilamente und die ggf. texturierten Garne nebeneinander in jeder Reihe eingebunden oder vermascht sind.
Eine weitere zweckmäßige Anordnungsmöglichkeit besteht darin, daß in der Abstandsstruktur die gegebenenfalls texturierten grobfibrilligen Multifilamentgarne und die Monofilamente alternierend aufeinander folgen.
Eine besondere Stabilisierung gegen seitliches Verschieben und Zusammenfallen der beiden Gewirkebahnen ergibt sich, wenn die Abstandshalterfäden aus gegebenenfalls texturiertem grobfibrilligem Multifilamentgarn und Monofilamenten zwischen den in einer Richtung liegenden Maschenreihen wechseln.
Zweckmäßigerweise hat die Abstandskonstruktion eine Fadendichte von insgesamt 150 bis 250, vorzugsweise 180 bis 200 Abstandshalterfäden pro cm².The arrangement of the optionally textured coarse-fibril multifilament yarns and the monofilaments in the spacing structure can be done in different ways. It is important that the monofilaments and any textured coarse-fibrillated multifilament yarns are statistically evenly mixed and distributed over the area of the spacer fabric.
An expedient arrangement possibility is that the monofilaments and the possibly textured yarns are integrated or meshed next to each other in each row in the spacing structure.
Another useful arrangement possibility is that the optionally textured coarse-fibrillated multifilament yarns and the monofilaments follow one another alternately in the spacing structure.
A special stabilization against lateral shifting and collapse of the two knitted webs results if the spacer threads made of possibly textured coarse-fibril multifilament yarn and monofilaments alternate between the rows of stitches lying in one direction.
Advantageously, the spacer construction has a total thread density of 150 to 250, preferably 180 to 200 spacer threads per cm².

Die als Abstandshalterfäden eingesetzten Monofilamente haben zweckmäßigerweise einen Titer von 20 bis 150 dtex, vorzugsweise von 70 bis 110 dtex, die als Abstandshalterfäden eingesetzten gegebenenfalls texturierten grobfibrilligen Multifilamentgarne haben zweckmäßigerweise einen Garntiter von 50 bis 250 dtex, vorzugsweise von 100 bis 200 dtex und einen Einzeltiter von 5 bis 100 dtex, vorzugsweise von 10 bis 20 dtex.The monofilaments used as spacer threads expediently have a titer of 20 to 150 dtex, preferably from 70 to 110 dtex, the optionally textured coarse-fibril multifilament yarns used as spacer threads expediently have a yarn titer of 50 to 250 dtex, preferably from 100 to 200 dtex and a single titer of 5 to 100 dtex, preferably from 10 to 20 dtex.

Texturierte Multifilamentgarne, die als Abstandshalterfäden dienen, sind luft- oder falschdrahttexturiert.Textured multifilament yarns that serve as spacer threads are air or false wire textured.

Die Figuren 1 bis 3 veranschaulichen schematisch und beispielhaft zwei Ausführungsformen der erfindungsgemäßen doppelflächigen Rundstrickware.Figures 1 to 3 illustrate schematically and by way of example two embodiments of the double-faced circular knitted fabric according to the invention.

Die Figur 1 zeigt schematisch eine zylindrisch geformte doppelflächige Rundstrickware, mit den beiden konzentrisch liegenden Gestrickbahnen (1) und (1') und den sie verbindenden, als Zickzacklinie angedeuteten Abstandshalterfäden (2).FIG. 1 shows schematically a cylindrical double-layer circular knitted fabric with the two concentrically located knitted webs (1) and (1 ') and the spacer threads (2) connecting them and indicated as a zigzag line.

Die Figur 2 zeigt einen Ausschnitt aus einer erfindungsgemäßen doppelflächigen Rundstrickware in schräger Aufsicht mit den beiden außenliegenden Gestrickbahnen (1) und (1'), den auf diesen gepunktet eingezeichneten Richtungslinien (12) und (12'), die die Lage der Maschenstäbchen andeuten, und den zwischen den Gestrickbahnen (1) und (1') hin und her laufenden Abstandsfäden aus Monofilamenten (3) und texturierten Multifilamentgarnen (4). In diesem Beispiel sind die Monofilamente und die texturierten Multifilamentgarne nebeneinander in jeder Reihe eingebunden oder vermascht.FIG. 2 shows a section of a double-faced circular knitted fabric according to the invention in an oblique view with the two outer knitted webs (1) and (1 '), the direction lines (12) and (12') shown in dotted lines on these, which indicate the position of the wales, and the spacer threads made of monofilaments (3) and textured multifilament yarns (4) running back and forth between the knitted webs (1) and (1 '). In this example, the monofilaments and the textured multifilament yarns are bound or meshed next to each other in each row.

Die Figur 3 zeigt einen Ausschnitt aus einer erfindungsgemäßen doppelflächigen Rundstrickware in schräger Aufsicht mit den beiden außenliegenden Gestrickbahnen (1) und (1'), den auf diesen gepunktet eingezeichneten Richtungslinien (12) und (12'), die die Lage der Maschenstäbchen andeuten, und den zwischen den Gestrickbahnen (1) und (1') hin und her laufenden Abstandsfäden aus Monofilamenten (3) und texturierten Multifilamentgarnen (4), sowie die zur Verdeutlichung voll gezeichneten Abstandshalterfäden (5), die sich zwischen nebeneinander liegenden Maschenstäbchen erstrecken. In diesem Beispiel sind die Monofilamente und die texturierten Multifilamentgarne in jeder Maschenrichtung alternierend in das Gestrick eingebunden oder vermascht und es erfolgt eine Querstabilisierung durch die das Maschenstäbchen wechselnden Fäden (5).FIG. 3 shows a section of a double-layer circular knitted fabric according to the invention in an oblique view with the two outer knitted webs (1) and (1 '), the direction lines (12) and (12') drawn in dotted lines on these, which indicate the position of the wales, and the spacer threads made of monofilaments (3) and textured multifilament yarns (4) running back and forth between the knitted webs (1) and (1 '), as well as the spacer threads (5), which are fully drawn for clarification, and which extend between adjacent wales. In this example, the monofilaments and the textured multifilament yarns are alternately bound or meshed in the knitting in each stitch direction and there is a transverse stabilization by the threads changing the wales (5).

Die Garne der beiden Gestrickbahnen und die Monofilamente und ggf. texturierten Garne der Abstandskonstruktion bestehen vorzugsweise aus Polyestern oder Polyolefinen.The yarns of the two knitted fabrics and the monofilaments and, if necessary, textured Spacing construction yarns preferably consist of polyesters or polyolefins.

Als Polyestermaterial kommen im Prinzip alle zur Faserherstellung geeigneten bekannten Typen in Betracht. Derartige Polyester bestehen überwiegend aus Bausteinen, die sich von aromatischen Dicarbonsäuren und von aliphatischen Diolen ableiten. Gängige aromatische Dicarbonsäurebausteine sind die zweiwertigen Reste von Benzoldicarbonsäuren, insbesondere der Terephthalsäure und der Isophthalsäure; gängige Diole haben 2-4 C-Atome, wobei das Ethylenglycol besonders geeignet ist. Vorzugsweise enthalten modifizierte Polyester mindestens 85 mol% Ethylenterephthalat-Einheiten. Die restlichen 15 mol% bauen sich dann aus Dicarbonsäureeinheiten und Glycoleinheiten auf, die als sogenannte Modifizierungsmittel wirken und die es dem Fachmann gestatten, die physikalischen und chemischen Eigenschaften der hergestellten Filamente gezielt zu beeinflussen. Beispiele für solche Dicarbonsäureeinheiten sind Reste der Isophthalsäure oder von aliphatischen Dicarbonsäure wie z.B. Glutarsäure, Adipinsäure, Sebazinsäure; Beispiele für modifizierend wirkende Diolreste sind solche von längerkettigen Diolen, z.B. von Propandiol oder Butandiol, von Di- oder Tri-ethylenglycol oder, sofern in geringer Menge vorhanden, von Polyglycol mit einem Molgewicht von ca. 500 - 2000. Besonders bevorzugt sind Polyester, die mindesten 95 mol% Ethylenterephthalat-Einheiten enthalten, insbesondere solche aus unmodifiziertem PET.In principle, all known types suitable for fiber production can be considered as polyester material. Such polyesters consist predominantly of building blocks which are derived from aromatic dicarboxylic acids and from aliphatic diols. Common aromatic dicarboxylic acid building blocks are the divalent residues of benzenedicarboxylic acids, especially terephthalic acid and isophthalic acid; Common diols have 2-4 carbon atoms, with ethylene glycol being particularly suitable. Modified polyesters preferably contain at least 85 mol% of ethylene terephthalate units. The remaining 15 mol% then build up from dicarboxylic acid units and glycol units, which act as so-called modifying agents and which allow the person skilled in the art to specifically influence the physical and chemical properties of the filaments produced. Examples of such dicarboxylic acid units are residues of isophthalic acid or of aliphatic dicarboxylic acid such as e.g. Glutaric acid, adipic acid, sebacic acid; Examples of modifying diol residues are those of longer-chain diols, e.g. of propanediol or butanediol, of di- or tri-ethylene glycol or, if present in small quantities, of polyglycol with a molecular weight of approximately 500-2000. Particularly preferred are polyesters which contain at least 95 mol% of ethylene terephthalate units, especially those made from unmodified PET.

Die erfindungsgemäßen, aus derartigen Polyestern, insbesondere aus Polyethylenterephthalat, hergestellten Abstandsgewirke sind nicht leicht zu entflammen. Die flammhemmende Wirkung kann noch verstärkt werden durch den Einsatz von flammhemmend modifizierten Polyestern. Derartige flammhemmend modifizierten Polyester sind bekannt. Sie enthalten Zusätze von Halogenverbindungen, insbesondere Bromverbindungen, oder, was besonders vorteilhaft ist, sie enthalten Phosphorverbindungen, die in die Polyesterkette einkondensiert sind. Besonders bevorzugte, flammhemmende erfindungsgemäße Abstandsgewirke enthalten Monofilamente und Garne aus Polyestern, die in der Kette Baugruppen der Formel

Figure imgb0001

worin R Alkylen oder Polymethylen mit 2 bis 6 C-Atomen oder Phenyl und R¹ Alkyl mit 1 bis 6 C-Atomen, Aryl oder Aralkyl bedeutet, einkondensiert enthalten.
Vorzugsweise bedeuten in der Formel I R Ethylen und R¹ Methyl, Ethyl, Phenyl, oder o-, m- oder p-Methyl-phenyl, insbesondere Methyl.The spacer fabrics according to the invention, made from such polyesters, in particular from polyethylene terephthalate, are not easily ignited. The flame retardant effect can be further enhanced by using flame retardant modified polyesters. Such flame-retardant modified polyesters are known. They contain additions of halogen compounds, in particular bromine compounds, or, which is particularly advantageous, they contain phosphorus compounds which are condensed into the polyester chain. Particularly preferred, flame-retardant spacer fabrics according to the invention contain monofilaments and yarns made of polyester, which in the chain are components of the formula
Figure imgb0001
wherein R is alkylene or polymethylene with 2 to 6 C atoms or phenyl and R¹ is alkyl with 1 to 6 C atoms, aryl or aralkyl, contained in condensed form.
In the formula IR, ethylene and R 1 are preferably methyl, ethyl, phenyl, or o-, m- or p-methylphenyl, in particular methyl.

Die in der erfindungsgemäßen doppelflächigen Rundstrickware enthaltenen Polyester haben zweckmäßigerweise ein Molekulargewicht entsprechend einer intrinsischen Viskosität (IV), gemessen in einer Lösung von 1g Polymer in 100 ml Dichloressigsäure bei 25°C, von 0,5 bis 1,4.The polyesters contained in the double-faced circular knitted fabric according to the invention expediently have a molecular weight corresponding to an intrinsic viscosity (IV), measured in a solution of 1 g of polymer in 100 ml of dichloroacetic acid at 25 ° C., from 0.5 to 1.4.

Als Polyolefine, aus denen die Garne der erfindungsgemäßen doppelflächigen Rundstrickware bestehen können, kommen auch substituierte, insbesondere durch Chlor oder Cyangruppen substituierte Polyolefine in Betracht. Beispiele für solche Polyolefinmaterialien sind Polyethylen, Polypropylen, Polyvinylchlorid und Polyacrylnitril. Bevorzugte Polyolefin-Garne bestehen aus Polypropylen.Substituted polyolefins, in particular those substituted by chlorine or cyano groups, are also suitable as polyolefins from which the yarns of the double-layer circular knitted fabric according to the invention can be made. Examples of such polyolefin materials are polyethylene, polypropylene, polyvinyl chloride and polyacrylonitrile. Preferred polyolefin yarns are made of polypropylene.

Unter "Rundstrickware" im Sinne dieser Erfindung sind selbstverständlich auch breitgezogene Strickschläuche und solche anderen Maschenwaren zu verstehen, deren Konstruktion einem Gestrick gleicht, wie z.B. Rund-Kuliergewirke."Circular knitwear" within the meaning of this invention is of course also to be understood as broad knitted tubes and such other knitted fabrics whose construction resembles a knitted fabric, such as Round knitted fabrics.

Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung der oben beschriebenen doppelflächigen Rundstrickware, bei dem auf den beiden Nadelfonturen von Zylinder und Rippscheibe einer Rundstrickmaschine eine doppelflächige Rundstrickware hergestellt wird, bei der die Abstandhalterfäden alternierend zwischen den beiden Gestrickbahnen hin und her geführt und in jeder Bahn eingebunden oder vermascht werden, das dadurch gekennzeichnet ist, daß an den entsprechenden Stricksystemen den Nadeln als Abstandhalterfaden entweder gegebenenfalls texturierte grobfibrillige Multifilamentgarne oder gegebenenfalls texturierte grobfibrillige Multifilamentgarne alternierend mit Monofilen zugeführt werden.Another object of the present invention is a method for producing the double-surface circular knitwear described above, in which a double-surface circular knitwear is produced on the two needle contours of the cylinder and the dial of a circular knitting machine, in which the spacer threads alternately run back and forth between the two knitted webs and in each web can be integrated or meshed, which is characterized in that on the corresponding knitting systems the needles as spacer thread either textured coarse-fibrillated multifilament yarns or optionally textured coarse-fibrillated multifilament yarns are alternately fed with monofilaments.

Die in den Figuren 4a und 4b dargestellten Schemata veranschaulichen beispielhaft die Schritte bei der Herstellung einer erfindungsgemäßen doppelflächigen Rundstrickware. Die in den Figuren untereinander liegenden fünf, durch eine horizontale Linie getrennten Gruppen (1; 2; 3; 4; 5) von kurzen senkrechten Strichen (6; 7) symbolisieren die Nadeln von fünf Systemen der Strickmaschine, wobei die oberhalb der horizontalen Linie liegende Strichgruppe (6) die Rippnadeln, die unter der horizontalen Linie liegende Strichgruppe (7) die Zylindernadeln darstellen.
Die von Nadel zu Nadel führenden Linien (8; 9) symbolisieren den Fadenlauf, wobei eine einfache Umlenkung (10) des Fadenlaufs an der Nadel eine Einbindung des betreffenden Fadens, eine Schlaufe (11) an der Nadel eine Vermaschung bedeutet. Die Linien (8) in dieser Darstellung sollen den Lauf des Abstandshalterfadens auf den Systemen 1 und 5, die Linien (9) den Lauf der Fäden für die Warenrückseite auf System 2 und Warenvorderseite auf den Systemen 3 und 4, auf denen eine jacquardmäßige Steuerung der Nadeln erfolgt, zeigen.
Bei diesem Beispiel ist der Abstandhalterfaden auf dem fünften System gegenüber dem ersten System um eine Nadel versetzt.The diagrams shown in FIGS. 4a and 4b illustrate, by way of example, the steps in the production of a double-layer circular knitted fabric according to the invention. The five groups (1; 2; 3; 4; 5) of short vertical lines (6; 7) lying one below the other in the figures symbolize the needles of five systems of the knitting machine, the one above the horizontal line Line group (6) the rib needles, the line group (7) below the horizontal line represent the cylinder needles.
The lines (8; 9) leading from needle to needle symbolize the thread path, a simple deflection (10) of the thread path on the needle means the thread in question, a loop (11) on the needle means a mesh. The lines (8) in this illustration are intended to run the spacer thread on the systems 1 and 5, the lines (9) the course of the threads for the back of the goods on system 2 and the front of the goods on systems 3 and 4, on which a jacquard control of Needles, show.
In this example, the spacer thread on the fifth system is offset by a needle compared to the first system.

Bei dem Einsatz von grobfibrilligem Multifilamentgarn als Abstandshalterfäden ist es bevorzugt, texturierte Garne einzusetzen. Sie können luft- oder falschdrahttexturiert sein.When using coarse-fibrillated multifilament yarn as spacer threads, it is preferred to use textured yarns. They can be air or false wire textured.

Vorzugsweise werden die Nadeln so gesteuert, daß in jeder der Bahnen eine Rechts-Links-Struktur gestrickt wird.The needles are preferably controlled so that a right-left structure is knitted in each of the tracks.

Entsprechend der oben beschriebenen bevorzugten Zusammensetzung der Abstandsstruktur ist es bevorzugt, wenn die Garnzufuhr so erfolgt, daß 50 bis 80 Gew.-%, vorzugsweise 60 bis 70 Gew.-%, der Abstandshalterfäden gegebenenfalls texturiertes grobfibrilliges Multifilamentgarn und dementsprechend 20 bis 50 Gew.-%, vorzugsweise 30 bis 40 Gew.-%, Monofilamente sind.According to the preferred composition of the spacer structure described above, it is preferred if the yarn is fed in such a way that 50 to 80% by weight, preferably 60 to 70% by weight, of the spacer threads optionally textured coarse-fibrillated multifilament yarn and accordingly 20 to 50% by weight. %, preferably 30 to 40% by weight, are monofilaments.

Sofern Monofilamente und Multifilamentgarne nebeneinander als Abstandhalterfäden eingesetzt werden sollen, ist es zweckmäßig, je nach der angestrebten, oben beschriebenen Anordnung der Monofilamente und der ggf. texturierten Multifilamentgarne in der Abstandsstruktur die Nadelauswahl so zu steuern, daß Abstandshalterfäden aus Monofilamenten und ggf. texturierten Multifilamenten in Längrichtung nebeneinander liegende Reihen bilden, oder daß Abstandshalterfäden aus Monofilamenten und ggf. texturierten Multifilamenten in Längrichtung gesehen, alternierend aufeinander folgen.If monofilaments and multifilament yarns are to be used next to each other as spacer threads, it is advisable, depending on the intended arrangement of the monofilaments and the possibly textured multifilament yarns in the spacing structure, to control the needle selection in such a way that spacer threads made of monofilaments and possibly textured multifilaments in Form rows lying side by side, or that spacer threads made of monofilaments and possibly textured multifilaments seen in the length direction follow one another alternately.

Eine besondere Stabilisierung gegen seitliches Verschieben und Zusammenfallen der beiden Gewirkebahnen ergibt sich, wenn man die Bindung so steuert, daß Abstandshalterfäden aus Monofilamenten und ggf. texturierten Multifilamenten zwischen den in Längrichtung liegenden Maschenketten wechseln.A special stabilization against lateral displacement and collapse of the two knitted fabrics results if the binding is controlled in such a way that spacer threads made of monofilaments and possibly textured multifilaments alternate between the stitch chains lying in the longitudinal direction.

Wie oben bereits ausgeführt, hat die erfindungsgemäße doppelflächige Rundstrickware eine sehr günstige Verformbarkeit, eine angenehme Haptik der textilen Oberfläche und ist - insbesondere wenn alle Fasermaterialien aus dem gleichen Polymermaterial bestehen - problemlos durch Recyclisierung zu entsorgen.
Es kann daher mit besonderem Vorteil zum Polstern und Verkleiden von Innenräumen, wie z.B. Autoinnenauskleidungen oder, insbesondere wenn zur Herstellung der Multifilamentgarne und Monofilamente ein flammhemmend modifizierter Polyester eingesetzt wird, von Flugzeugzellen, Schnellzugabteilen oder Öffentlichen Einrichtungen eingesetzt werden.As already stated above, the double-faced circular knitted fabric according to the invention has a very good deformability, a pleasant feel of the textile surface and can be disposed of by recycling, in particular if all fiber materials consist of the same polymer material, without any problems.
It can therefore be used with particular advantage for upholstering and cladding interiors, such as car interior linings or, especially if a flame-retardant modified polyester is used to manufacture the multifilament yarns and monofilaments, from airframes, express train compartments or public facilities.

Claims (14)

Doppelflächige Rundstrickware mit zwei konzentrischen Gestrickbahnen und einer dazwischenliegenden Abstandsstruktur, dadurch gekennzeichnet, daß sie als Abstandshalterfäden gegebenenfalls texturierte grobfibrillige Multifilamentgarne, gegebenenfalls in Kombination mit Monofilamenten, aufweist, daß der Abstand zwischen den beiden Gestrickbahnen 0,3 bis 8 mm beträgt, daß die Maschendichte einer Maschinenteilung von E 16 bis E 32 entspricht und daß die Dichte der Abstandsfäden zwischen 150 und 250 Fäden pro cm² liegt.Double-faced circular knitted fabric with two concentric knitted webs and a spacing structure in between, characterized in that, as spacer threads, it may have textured coarse-fibril multifilament yarns, optionally in combination with monofilaments, that the distance between the two knitted webs is 0.3 to 8 mm, so that the stitch density is one Machine division from E 16 to E 32 corresponds and that the density of the spacer threads is between 150 and 250 threads per cm². Doppelflächige Rundstrickware gemäß Anspruch 1, dadurch gekennzeichnet, daß die gegebenenfalls texturierten grobfibrilligen Multifilamentgarne einen Garntiter von 50 bis 250 dtex und einem Einzeltiter von 5 bis 100 dtex haben.Double-layer circular knitwear according to claim 1, characterized in that the optionally textured coarse-fibril multifilament yarns have a yarn titer of 50 to 250 dtex and a single titer of 5 to 100 dtex. Doppelflächige Rundstrickware gemäß mindestens einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Monofilamente einen Titer von 20 bis 150 dtex aufweisen.Double-layer circular knitted fabric according to at least one of claims 1 and 2, characterized in that the monofilaments have a titer of 20 to 150 dtex. Doppelflächige Rundstrickware gemäß mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß alle Garne für die doppelflächige Rundstrickware aus demselben Polymer bestehen.Double-layer circular knitwear according to at least one of claims 1 to 3, characterized in that all the yarns for the double-layer circular knitwear consist of the same polymer. Doppelflächige Rundstrickware gemäß Anspruch 1, dadurch gekennzeichnet, daß das Polymer der Garne aus Polyestern oder Polyolefinen bestehen.Double-layer circular knitted fabric according to claim 1, characterized in that the polymer of the yarns consist of polyesters or polyolefins. Doppelflächige Rundstrickware gemäß Anspruch 5, dadurch gekennzeichnet, daß der Polyester Polyethylenterephtalat ist.Double-faced circular knitted fabric according to claim 5, characterized in that the polyester is polyethylene terephthalate. Doppelflächige Rundstrickware gemäß mindestens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sein Flächengewicht 150 bis 1400 g/m² beträgt.Double-layer circular knitted fabric according to at least one of claims 1 to 6, characterized in that its basis weight is 150 to 1400 g / m² is. Doppelflächige Rundstrickware gemäß mindestens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß in der Abstandsstruktur die Monofilamente und die ggf. texturierten Garne nebeneinander in jeder Reihe eingebunden sind.Double-layer circular knitted fabric according to at least one of claims 1 to 7, characterized in that the monofilaments and the optionally textured yarns are incorporated next to each other in each row in the spacing structure. Doppelflächige Rundstrickware gemäß mindestens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß in der Abstandsstruktur die Monofilamente und die ggf. texturierten Garne alternierend aufeinander folgen.Double-layer circular knitted fabric according to at least one of claims 1 to 8, characterized in that the monofilaments and the optionally textured yarns follow one another alternately in the spacing structure. Doppelflächige Rundstrickware gemäß mindestens einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß 50 bis 80 Gew.-%, vorzugsweise 60 bis 70 Gew.-% der Abstandshalterfäden gegebenenfalls texturiertes grobfibrilliges Multifilamentgarn und dementsprechend 20 bis 50 Gew.-%, vorzugsweise 30 bis 40 Gew.-% Monofilamente sind.Double-layer circular knitted fabric according to at least one of claims 1 to 9, characterized in that 50 to 80% by weight, preferably 60 to 70% by weight of the spacer threads optionally textured coarse fibrillated multifilament yarn and accordingly 20 to 50% by weight, preferably 30 to 40% by weight are monofilaments. Verfahren zur Herstellung der doppelflächigen Rundstrickware des Anspruchs 1, bei dem auf den beiden Nadelfonturen von Zylinder und Rippscheibe einer Rundstrickmaschine eine doppelflächige Rundstrickware hergestellt wird, bei der die Abstandhalterfäden alternierend zwischen den beiden Gestrickbahnen hin und her geführt und in jeder Bahn eingebunden oder vermascht werden, das dadurch gekennzeichnet ist, daß an den entsprechenden Stricksystemen den Nadeln als Abstandhalterfaden entweder gegebenenfalls texturierte grobfibrillige Multifilamentgarne oder gegebenenfalls texturierte grobfibrillige Multifilamentgarne alternierend mit Monofilen zugeführt werden.A process for producing the double-faced circular knitted fabric of claim 1, in which a double-faced circular knitted fabric is produced on the two needle contours of the cylinder and the dial of a circular knitting machine, in which the spacer threads are guided back and forth alternately between the two knitted webs and integrated or meshed in each web, which is characterized in that either appropriate textured coarse-fibrillated multifilament yarns or optionally textured coarse-fibrillated multifilament yarns are alternately fed to the needles as spacer thread on the corresponding knitting systems with monofilaments. Verfahren gemäß Anspruch 11, dadurch gekennzeichnet, daß die Garnzufuhr so erfolgt, daß 50 bis 80 Gew.-%, vorzugsweise 60 bis 70 Gew.-%, der Abstandshalterfäden gegebenenfalls texturiertes grobfibrilliges Multifilamentgarn und dementsprechend 20 bis 50 Gew.-%, vorzugsweise 30 bis 40 Gew.-%, Monofilamente sind.A method according to claim 11, characterized in that the yarn is fed in such a way that 50 to 80% by weight, preferably 60 to 70% by weight, of the spacer threads, optionally textured coarse-fibril multifilament yarn and accordingly 20 to 50% by weight, preferably 30 up to 40% by weight, are monofilaments. Verfahren gemäß mindestens einem der Ansprüche 11 und 12, dadurch gekennzeichnet, daß die Nadeln so gesteuert, daß in jeder der Bahnen eine Rechts-Links-Struktur gestrickt wird.Method according to at least one of claims 11 and 12, characterized in that the needles are controlled so that a right-left structure is knitted in each of the webs. Verwendung der doppelflächigen Rundstrickware des Anspruchs 1 zum Polstern und Verkleiden von Innenräumen.Use of the double-faced circular knitted fabric of claim 1 for upholstering and cladding interiors.
EP94101798A 1993-02-12 1994-02-07 Double-faced circular knitwear Expired - Lifetime EP0610845B1 (en)

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DE9302039U DE9302039U1 (en) 1993-02-12 1993-02-12 Double-face circular knit
DE9302039U 1993-02-12

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749327A1 (en) * 1996-06-04 1997-12-05 Commissariat Energie Atomique KNITTED DOUBLE-SKIN TEXTILE STRUCTURE AND ORIENTABLE BONDING YARN AND METHOD FOR MANUFACTURING THE SAME
EP1111110A2 (en) * 1999-12-23 2001-06-27 Scott & Fyfe Limited Reinforced panel structure
WO2001068963A1 (en) * 2000-03-15 2001-09-20 Ames Europe Novel double-faced thick knitted fabric with flexible structure
CN111705401A (en) * 2020-06-15 2020-09-25 江南大学 Transverse-knitted three-dimensional internal support structure fabric and preparation method thereof

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100334315B1 (en) 1992-06-15 2002-10-11 헤르만밀러인코퍼레이티드 Slope control device for office
DE9309374U1 (en) * 1993-03-13 1993-08-19 Hoechst Ag, 65929 Frankfurt Spacer fabrics
US5385036A (en) * 1993-05-24 1995-01-31 Guilford Mills, Inc. Warp knitted textile spacer fabric, method of producing same, and products produced therefrom
US5422153A (en) * 1993-06-25 1995-06-06 Marumiya Shoko Co., Ltd. Weft knitted composite fabric
DE4336303A1 (en) * 1993-10-25 1995-04-27 Wirkelastic Gmbh Double-layer, moisture-transporting spacer fabric
BE1008500A3 (en) * 1994-07-11 1996-05-07 Hoorens Jan Mat for lying.
DE4428238A1 (en) * 1994-08-10 1996-02-15 Hoechst Ag Multi-surface textile material with a stable spacing structure and process for its production
CA2223120C (en) * 1997-12-02 2002-02-12 Vintex Inc. Textile fabric
US5896758A (en) * 1997-04-17 1999-04-27 Malden Mills Industries, Inc. Three-dimensional knit spacer fabric for footwear and backpacks
US6156406A (en) * 1998-03-19 2000-12-05 Malden Mills Industries, Inc. Three-dimensional high-low bulk spacer fabric
US6145348A (en) * 1998-08-19 2000-11-14 Tietex International, Inc. Fabric and process and apparatus for producing same
GB9818978D0 (en) * 1998-09-02 1998-10-21 Smith & Nephew Orthapaedic articles
JP3191215B2 (en) * 1999-10-04 2001-07-23 株式会社三宅デザイン事務所 Circular knitted fabric and method of forming garment from circular knitted fabric
JP3286787B2 (en) * 1999-10-04 2002-05-27 株式会社三宅デザイン事務所 Method of forming clothes from long cloth
FR2808538B1 (en) * 2000-05-02 2002-07-19 Didier Royaerts THERMAL INSULATION MATERIAL
EP1344856A4 (en) * 2000-12-18 2004-03-03 Asahi Doken Kabushiki Kaisha Double knitted fabric
JP3880320B2 (en) * 2001-02-08 2007-02-14 帝人ファイバー株式会社 Underwear made from lightweight heat-insulated knitted fabric
US6644070B2 (en) * 2001-03-29 2003-11-11 Asahi Kasei Kabushiki Kaisha Three-dimensional fabric for seat
WO2003038173A1 (en) * 2001-10-31 2003-05-08 Asahi Kasei Fibers Corporation Elastic knitting fabric having multilayer structure
US7752681B2 (en) * 2002-05-24 2010-07-13 Michel Licensing, Inc. Article of clothing with wicking portion
GB0220181D0 (en) * 2002-08-30 2002-10-09 Monarch Knitting Machinery Uk Weft knitted spacer fabrics
BR0315626A (en) * 2002-11-15 2005-08-23 Milliken & Co Bubble fabrics with internal connecting elements
US20040097152A1 (en) * 2002-11-15 2004-05-20 Boyd William O. Composite fabrics with internal connecting elements
US20040097150A1 (en) * 2002-11-15 2004-05-20 Boyd William O. Blister fabrics with internal connecting elements
US7611999B2 (en) * 2002-11-16 2009-11-03 Mcmurray Brian Decorative faced multi-layer weft knit spacer fabric, method, and articles made therefrom
US20040137811A1 (en) * 2003-01-09 2004-07-15 L & P Property Management Company Elastomeric seating composite
US6755052B1 (en) * 2003-01-16 2004-06-29 Ronald M. Sytz Knitted stretch spacer material and method of making
US6854296B1 (en) 2004-01-23 2005-02-15 Sara Lee Corporation Bi-ply fabric construction and apparel formed therefrom
US7276275B2 (en) * 2004-04-22 2007-10-02 Highland Industries, Inc. Laminated spacer fabric
DE112005000946T5 (en) * 2004-04-22 2007-07-12 Highland Industries, Inc. spacer fabric
US7937973B2 (en) * 2004-08-12 2011-05-10 Tytex A/S Tubular spacer fabric
CA2579178A1 (en) * 2004-09-07 2006-03-16 Mckinnon Land, Llc Knit tube flame resistant barriers
US7465283B2 (en) * 2005-01-12 2008-12-16 Ossur, Hf Cast assembly with breathable double knit type padding
US20070144221A1 (en) * 2005-02-23 2007-06-28 Sytz Ronald M 3-D fabric knitted stretch spacer material having molded domed patterns and method of making
US8070705B2 (en) * 2005-06-21 2011-12-06 Hipsaver, Incorporated Protective device using a spacer fabric
US7926307B1 (en) 2006-05-02 2011-04-19 Williams John M Double sided polypropylene knit loop fabric
WO2008005051A1 (en) * 2006-07-07 2008-01-10 Massachusetts Institute Of Technology Rapid cooling and heating of car seats with massaging effects
WO2008004733A1 (en) * 2006-07-07 2008-01-10 Kolonglotech. Inc Spacer fabric and method of fabricating the same
US20080082035A1 (en) * 2006-09-29 2008-04-03 Bsn Medical, Inc. Water resistant undercast liner
US7867057B2 (en) * 2007-03-27 2011-01-11 Maidenform, Inc. Bra wings using elastic spacer fabric
US7867056B2 (en) * 2007-04-23 2011-01-11 Maidenform, Inc. Bra wings using elastic spacer fabric
US20080299854A1 (en) * 2007-06-01 2008-12-04 Ssm Industries, Inc. Flame Resistant Spacer Fabric
US7481079B1 (en) 2007-10-03 2009-01-27 Milliken & Company Circular knit fabric and method
EP2654631B1 (en) * 2010-12-22 2018-05-09 Ossur HF Orthopedic device
US20120244772A1 (en) * 2011-03-22 2012-09-27 Barrday Inc. Multilayer fabric platform designed for flame and thermal protection
WO2012162540A1 (en) * 2011-05-24 2012-11-29 Lee David E Knitted fabrics and methods of producing the same
US20130291399A1 (en) * 2012-02-09 2013-11-07 Mx Orthopedics, Corp. Insole and foot orthotics made of shape memory material (smm) three-dimensional spacer fabrics
DE102012105134B4 (en) * 2012-06-13 2020-06-04 Müller Textil GmbH Spacer fabrics and automotive interior
ES2439818B1 (en) * 2012-07-23 2014-12-29 Relats, S.A. TUBULAR PROTECTION COVER
DE102013207155B4 (en) * 2013-04-19 2020-04-23 Adidas Ag Shoe upper
DE102014108987B3 (en) * 2014-06-26 2015-10-22 Karl Mayer Textilmaschinenfabrik Gmbh Knitted fabric, method for producing a knitted fabric and warp knitting machine
TW201615910A (en) * 2014-10-21 2016-05-01 曾聰明 Color changeable textile
EP3075893B1 (en) * 2015-04-02 2018-09-12 Karl Mayer Textilmaschinenfabrik GmbH Knitwear and method for manufacturing knitwear
WO2017075587A1 (en) * 2015-10-30 2017-05-04 Geox S.P.A Three-dimensional channeled fabric structure for garments and/or footwear
DE202015008053U1 (en) * 2015-11-24 2016-02-23 bett1.de GmbH mattress cover
DE102017126047A1 (en) 2017-11-08 2019-05-09 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Knitted spacer fabric
US11746450B2 (en) * 2018-08-28 2023-09-05 See Rose Go, Inc. Interlock-knit fabric
CN115287810B (en) * 2019-02-01 2024-04-19 旭化成株式会社 Weft knitted fabric
CA3131032A1 (en) * 2019-02-22 2020-08-27 Jess Black Inc. Fire-resistant double-faced fabric of knitted construction
DE102019107176B4 (en) * 2019-03-20 2022-10-20 Müller Textil GmbH Spacer fabric and use of a spacer fabric
JP7162758B2 (en) * 2019-11-28 2022-10-28 旭化成アドバンス株式会社 3D Elastic Circular Knitted Fabric
US11066763B1 (en) * 2020-04-21 2021-07-20 GM Global Technology Operations LLC Knitting methods for increased separation of fabric layers of tethered spacer fabrics

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851348C2 (en) * 1977-11-30 1988-04-28 Aktiebolaget Eiser, Boras, Se
EP0339227A2 (en) * 1988-04-23 1989-11-02 Vorwerk &amp; Co. Interholding GmbH Construction element on a knitwear basis, and method for its manufacture
DE9016062U1 (en) * 1990-11-26 1991-02-14 Müller Textil GmbH, 5276 Wiehl Textile spacer fabric
WO1992013125A1 (en) * 1991-01-23 1992-08-06 Courtaulds Advanced Materials (Holdings) Limited Thermal insulation materials

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067739A (en) * 1936-07-01 1937-01-12 Karo Knit Fabrics Inc Knitted fabric and method of making the same
JP3328307B2 (en) * 1991-11-28 2002-09-24 ユニチカ株式会社 Orthopedic sheet composition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851348C2 (en) * 1977-11-30 1988-04-28 Aktiebolaget Eiser, Boras, Se
EP0339227A2 (en) * 1988-04-23 1989-11-02 Vorwerk &amp; Co. Interholding GmbH Construction element on a knitwear basis, and method for its manufacture
DE9016062U1 (en) * 1990-11-26 1991-02-14 Müller Textil GmbH, 5276 Wiehl Textile spacer fabric
WO1992013125A1 (en) * 1991-01-23 1992-08-06 Courtaulds Advanced Materials (Holdings) Limited Thermal insulation materials

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749327A1 (en) * 1996-06-04 1997-12-05 Commissariat Energie Atomique KNITTED DOUBLE-SKIN TEXTILE STRUCTURE AND ORIENTABLE BONDING YARN AND METHOD FOR MANUFACTURING THE SAME
WO1997046749A1 (en) * 1996-06-04 1997-12-11 Commissariat A L'energie Atomique Knitted textile structure with double skin and adjustable binding threads and method of manufacture
US6105401A (en) * 1996-06-04 2000-08-22 Commissariat A L'energie Atomique Knitted textile structure with double skin and adjustable binding threads and method of manufacture
EP1111110A2 (en) * 1999-12-23 2001-06-27 Scott & Fyfe Limited Reinforced panel structure
EP1111110A3 (en) * 1999-12-23 2002-04-17 Scott & Fyfe Limited Reinforced panel structure
WO2001068963A1 (en) * 2000-03-15 2001-09-20 Ames Europe Novel double-faced thick knitted fabric with flexible structure
FR2806424A1 (en) * 2000-03-15 2001-09-21 Ames Europ NEW DOUBLE-SIDED THICK KNIT WITH FLEXIBLE STRUCTURE
US6634190B2 (en) 2000-03-15 2003-10-21 Ames Europe Double-faced thick knitted fabric with flexible structure
CN111705401A (en) * 2020-06-15 2020-09-25 江南大学 Transverse-knitted three-dimensional internal support structure fabric and preparation method thereof
CN111705401B (en) * 2020-06-15 2021-05-04 江南大学 Transverse-knitted three-dimensional internal support structure fabric and preparation method thereof
WO2021253974A1 (en) * 2020-06-15 2021-12-23 江南大学 Flat-knitted three-dimensional internal supporting structure fabric and preparation method therefor

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EP0610845B1 (en) 1997-12-10
US5651847A (en) 1997-07-29
HRP931409A2 (en) 1995-02-28
DE59404752D1 (en) 1998-01-22
HU9400371D0 (en) 1994-05-30
DE9302039U1 (en) 1993-04-01
FI940617A (en) 1994-08-13
CA2115505A1 (en) 1994-08-13
FI940617A0 (en) 1994-02-10
TR27432A (en) 1995-05-23
HUT68404A (en) 1995-06-28
JPH06240546A (en) 1994-08-30
MX9401124A (en) 1994-08-31
CZ29794A3 (en) 1995-08-16
SK16694A3 (en) 1994-09-07
BR9400483A (en) 1994-09-27
PL302196A1 (en) 1994-08-22

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