EP0610845B1 - Doppelflächige Rundstrickware - Google Patents

Doppelflächige Rundstrickware Download PDF

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Publication number
EP0610845B1
EP0610845B1 EP94101798A EP94101798A EP0610845B1 EP 0610845 B1 EP0610845 B1 EP 0610845B1 EP 94101798 A EP94101798 A EP 94101798A EP 94101798 A EP94101798 A EP 94101798A EP 0610845 B1 EP0610845 B1 EP 0610845B1
Authority
EP
European Patent Office
Prior art keywords
double
face circular
circular knit
spacer
coarse
Prior art date
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.)
Expired - Lifetime
Application number
EP94101798A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0610845A1 (de
Inventor
Alfons LÖFFLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0610845A1 publication Critical patent/EP0610845A1/de
Application granted granted Critical
Publication of EP0610845B1 publication Critical patent/EP0610845B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • Polyamide yarns for the knitted fabric and polypropylene spacers are of considerable disadvantage for the disposal of these materials. 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.
  • 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-surface circular knitted fabric with two concentric knitted webs (1) and (1 ') and an intermediate spacer structure (2), which is characterized in that the spacer structure (2) consists of spacer threads which contain coarse-fibrillated multifilament yarns, the Distance between the two knitted sheets (1) and (1 ') is 0.3 to 8 mm, and the stitch 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 cm 2 .
  • the 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 from 5 to 100 dtex, preferably from 10 to 20 dtex, and are optionally textured.
  • 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 necessary, 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 weight per unit area of 150 to 1400 g / m 2 , preferably 200 to 500 g / m 2 , 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 expediently has a thread density of a total of 150 to 250, preferably 180 to 200 spacer threads per cm 2 .
  • the monofilaments used as spacer threads expediently have a titer of 20 to 150 dtex, preferably 70 to 110 dtex, and the textures used as spacer threads, if appropriate, are textured
  • Coarse-fibril multifilament yarns expediently have a yarn titer of 50 to 250 dtex, preferably 100 to 200 dtex and a single titer of 5 to 100 dtex, preferably 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 course rows, and the spacing 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-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 course rows, 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 rows of stitches.
  • the monofilaments and the textured multifilament yarns are in each Mesh direction alternately integrated or meshed in the knitted fabric and there is a transverse stabilization by the threads changing the rows of stitches (5).
  • the yarns of the two knitted fabrics and the monofilaments and possibly textured yarns of the spacer construction 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, in particular 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.
  • spacer fabrics according to the invention made from such polyesters, in particular from polyethylene terephthalate, are not easily ignited.
  • 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.
  • 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 carbon atoms or phenyl and R 1 is alkyl with 1 to 6 carbon atoms, aryl or aralkyl, contained in condensed form.
  • R alkylene or polymethylene with 2 to 6 carbon atoms or phenyl
  • R 1 is alkyl with 1 to 6 carbon 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-faced circular knitted fabric described above, in which the two needle contours of cylinder and dial of a circular knitting machine a double-faced circular knitted fabric is produced, in which the spacer threads are alternately guided back and forth between the two knitted webs and integrated or meshed in each web, which is characterized in that the needles on the corresponding knitting systems as Spacer thread either coarse-fibrillated multifilament yarns or coarse-fibrillated multifilament yarns are fed alternately 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, and can therefore be disposed of with particular advantage for cushioning and covering Interiors, such as Car interior linings or, in particular if a flame-retardant modified polyester is used to manufacture the multifilament yarns and monofilaments, are used by 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)
EP94101798A 1993-02-12 1994-02-07 Doppelflächige Rundstrickware Expired - Lifetime EP0610845B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9302039U DE9302039U1 (de) 1993-02-12 1993-02-12 Doppelflächige Rundstrickware
DE9302039U 1993-02-12

Publications (2)

Publication Number Publication Date
EP0610845A1 EP0610845A1 (de) 1994-08-17
EP0610845B1 true EP0610845B1 (de) 1997-12-10

Family

ID=6889339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101798A Expired - Lifetime EP0610845B1 (de) 1993-02-12 1994-02-07 Doppelflächige Rundstrickware

Country Status (14)

Country Link
US (1) US5651847A (cs)
EP (1) EP0610845B1 (cs)
JP (1) JPH06240546A (cs)
BR (1) BR9400483A (cs)
CA (1) CA2115505A1 (cs)
CZ (1) CZ29794A3 (cs)
DE (2) DE9302039U1 (cs)
FI (1) FI940617A (cs)
HR (1) HRP931409A2 (cs)
HU (1) HUT68404A (cs)
MX (1) MX9401124A (cs)
PL (1) PL302196A1 (cs)
SK (1) SK16694A3 (cs)
TR (1) TR27432A (cs)

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SE413070B (sv) * 1977-11-30 1980-04-14 Eiser Ab Textilt sitt- och liggunderlag
DE3813741C2 (de) * 1988-04-23 1998-12-24 Vorwerk Co Interholding Bauteil auf Gewirkebasis und Verfahren zu seiner Herstellung
DE9016062U1 (de) * 1990-11-26 1991-02-14 Müller Textil GmbH, 5276 Wiehl Textiles Abstandsgewirke
GB9101444D0 (en) * 1991-01-23 1991-03-06 Courtaulds Advanced Materials Thermal insulation materials
JP3328307B2 (ja) * 1991-11-28 2002-09-24 ユニチカ株式会社 整形外科用シート状組成物

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US5651847A (en) 1997-07-29
HRP931409A2 (hr) 1995-02-28
DE59404752D1 (de) 1998-01-22
HU9400371D0 (en) 1994-05-30
DE9302039U1 (de) 1993-04-01
FI940617A (fi) 1994-08-13
CA2115505A1 (en) 1994-08-13
FI940617A0 (fi) 1994-02-10
TR27432A (tr) 1995-05-23
HUT68404A (en) 1995-06-28
JPH06240546A (ja) 1994-08-30
MX9401124A (es) 1994-08-31
CZ29794A3 (en) 1995-08-16
EP0610845A1 (de) 1994-08-17
SK16694A3 (en) 1994-09-07
BR9400483A (pt) 1994-09-27
PL302196A1 (en) 1994-08-22

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