EP0976854B1 - Fibres à deux composants âme-gaine monofilamentaires - Google Patents

Fibres à deux composants âme-gaine monofilamentaires Download PDF

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Publication number
EP0976854B1
EP0976854B1 EP99114642A EP99114642A EP0976854B1 EP 0976854 B1 EP0976854 B1 EP 0976854B1 EP 99114642 A EP99114642 A EP 99114642A EP 99114642 A EP99114642 A EP 99114642A EP 0976854 B1 EP0976854 B1 EP 0976854B1
Authority
EP
European Patent Office
Prior art keywords
sheath
core
monofilaments
monofilaments according
weight
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
EP99114642A
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German (de)
English (en)
Other versions
EP0976854A1 (fr
Inventor
Rex Dr. Delker
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.)
Teijin Monofilament Germany GmbH
Original Assignee
Teijin Monofilament Germany GmbH
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 Teijin Monofilament Germany GmbH filed Critical Teijin Monofilament Germany GmbH
Publication of EP0976854A1 publication Critical patent/EP0976854A1/fr
Application granted granted Critical
Publication of EP0976854B1 publication Critical patent/EP0976854B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2924—Composite
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]

Definitions

  • the invention relates to monofilaments in the form of bicomponent threads Core sheath types which comprise a core which is a liquid crystalline polymer contains, their production and their use in particular for Manufacture of paper machine fabrics.
  • a monofilament in the sense of the invention is to be understood as an endless yarn which consists of a single continuous fiber, which is made with or without twist and which have a diameter of at least 0.01 mm, preferably at least 0.08 mm, in particular 0.1 mm and more. It is different from Individual filaments in the form of core sheath threads, which are usually used for textiles Purposes are made, especially by the significantly higher Diameter.
  • Monofilaments are mainly used for the production of technical articles, in particular technically used fabrics, in contrast to Multifilament yarns that are made up of fine individual filaments and before used mainly in the textile industry.
  • Monofilaments in the form of bicomponent threads of the core sheath type are in themselves are already known and are described for example in EP 0 763 611 A1.
  • the core component there is a polyester, whereas the sheath is a polyamide is.
  • the polyester of the core can also be a liquid-crystalline polymer.
  • the Coat a polymer that promotes adhesion.
  • liability is waived still to be desired, so that it is, especially with strong mechanical Stress, to a separation of core and shell component, at least in part, which comes down to the mechanical properties of the products produced in such monofilaments.
  • the strengths are too still in need of improvement.
  • Multi-component threads of the core sheath type are produced, in which the core is made of an aromatic polyester and the jacket is a semi-aromatic Contains polyamide. Notes on the production of monofilaments can be found in the abstract not to be inferred from this Japanese application; liability also leaves here between the core and the coat left something to be desired.
  • Japanese patent application 1992/370 321 also describes monofilaments with an A Component as a core component and a B component as a sheath component described, wherein the B component consists of 80% polycarbonate.
  • Bicomponent monofilaments in which the jacket component is made of polyester and 1 - 5% by weight Polycarbonate are not described in this document and are not suggested.
  • a core sheath filament is disclosed in Japanese patent application JP-07 / 243,128 described, which has a liquid-crystalline polyester core and a jacket thermoplastic polymer.
  • This thermoplastic polymer of the shell forms a so-called Sea component and contains an anisotropic aromatic polyester as so-called island components. That is, the jacket is constructed from a matrix of a thermoplastic polymer, in which contains larger deposits that are not compatible with the matrix.
  • the object of the invention is therefore to monofilament in the form of bicomponent threads of the core shell type, which fall over a core which contains a liquid-crystalline polymer and a surrounding this core Sheath, in which the cohesion between the core and The sheath component is very good and does not tend to fibrillate, a very high one Have abrasion resistance and good strength and where the jacket has a has an excellent protective effect on the core.
  • the invention further relates to a method for producing this Monofilaments according to claim 12 and the use of the monofilaments according to of the invention according to claims 13 to 15.
  • the core and the sheath component are melted separately in the extruder and spun in a one-step process in a bicomponent spin pack. After leaving the spinneret, the emerging monofilaments are below the Spinneret in a shaft, for example with a tempered gas flow cooled. It is also possible to cool the threads with the help of a liquid. The threads are cooled down to a temperature which is preferably at least 0 to 30 ° C below the Glass conversion of the cladding material lies. Spray speed and trigger (the so-called spinning speed) are coordinated so that a Delay of at least 1: 5 to 1:30, preferably 1: 8 to 1:15, is reached.
  • the monofilaments are wound up after the spinning take-off.
  • tempering is possible to start at 200 ° C and then continuously up to, for example, 270 ° C increase.
  • the tempering conditions naturally depend in particular on the jacket material used.
  • the maximum temperature should be 20 to 30 ° C are below the melting temperature of the jacket polymer.
  • a conventional liquid-crystalline polymer can be used as the core component become.
  • a single polymer can be used, but it is also possible to mix several liquid-crystalline polymers. there the mixture should be spun as homogeneously as possible.
  • mixtures of purely liquid-crystalline polymers can also be mixtures one or more liquid crystalline and one or more not liquid-crystalline polymers are used.
  • Polycondensation products are preferred as liquid-crystalline polymers Base of p-hydroxybenzoic acid and 2,6-hydroxynaphthoic acid, in particular those which are composed of 70 to 80, preferably 72 to 74 mol% of p-hydroxybenzoic acid and 20 to 30, preferably 26 to 28 mole% 2,6-hydroxynaphthoic acid.
  • polyesters such as Polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, but also polyethylene 2,6-naphthalate or poly (1,4-bis (hydroxymethyl) cyclohexane terephthalate are used.
  • polyesters can be used alone or as a mixture.
  • polycarbonates used as a further component are commercially available available; this has proven to be very suitable under the Makrolon trade name distributed product proven. Polycarbonates are suitable in the context of Invention as a sheath component, especially when mixed with other polyesters.
  • the Sheath one or more elastomeric polyesters.
  • These are in particular Copolyesters based on dicarboxylic acids such as terephthalic acid or their Derivatives and a diol such as 1,4-butanediol or ethylene glycol and one Polyglycol, in particular for example the polyglycol based on Tetrahydrofuran.
  • Polytetrahydrofuran butylene terephthalate is preferred.
  • This elastomeric polyester can be built up, for example, by polycondensation of dimethyl terephthalate, butanediol and polytetrahydrofuran of the formula HO (CH 2 CH 2 CH 2 CH 2 O) n H.
  • n is an average and can take different values, correspondingly high then the molecular weight is in the order of about 600 to about 2,000, especially in the order of 1,000, is advantageous.
  • a average molecular weight of about 1,000 corresponds to an average of n 17th
  • the sheath of the monofilament bicomponent thread should be essentially homogeneous be, i.e. have no macroscopically detectable heterogeneous structure, such as for example a matrix with embedded discrete islands. With mixtures single-phase mixtures are preferred. For components that are used in the Extrusion temperature itself in two phases side by side is through vigorous mixing, for example intensive stirring, for a corresponding To ensure homogenization.
  • Suitable temperature control conditions can be selected by simple preliminary tests in order to obtain optimal properties. It is convenient to temper over a period of time, preferably over several hours, perform.
  • the physical properties of the monofilament according to the invention are largely due to the physical Properties of the core determined.
  • the main task of the coat is to create the core protect against fibrillation, abrasion and soiling. Furthermore, the Coat the processing and improve the usage behavior.
  • the monofilaments of the invention can be advantageous for a whole Use a number of uses, such as manufacturing Fabrics for papermaking, for example for screen fabrics, such as those used in the Sheet forming section, the press section and the drying section of Paper machines are desired, filter fabrics can also be produced Conveyor belt fabric, coated or uncoated.
  • the Monofilaments for example, can only be used as weft material but it is also possible to completely remove the tissue from the invention To produce monofilaments.
  • Another intended use Fabric is the reinforcement in car tires; made accordingly Fabrics can also be used for screen printing.
  • the monofilaments according to the invention were considerable are better protected against fibrillation that they can easily be rewound and both as warp and as weft when used for the production of Fabrics can be used.
  • the monofilaments are characterized by a particularly low tendency to creep.
  • Vectra A 910 was used as the fully aromatic polyester for the core (LCP) selected, a blend consisting of 96.4% of the Polyethylene naphthalate Polyclear N 100 (PEN), 3% from Vectra A 910 as it is also used in the core, and 0.6% from the carbodiimide Stabaxol 1.
  • a spinneret with 40 holes was used, each spinning orifice with one Fine bore of 0.80 mm.
  • the promotion per nozzle hole was 5.79 g / min for the core flow and 2.48 g / min for the sheath flow. So the core takes about 70% of the cross-sectional area, the jacket about 30% of the cross-sectional area of the monofilament under the nozzle.
  • the monofilaments were placed in a water bath with a pulley guided.
  • the water temperature was 95 ° C, the distance between the spinneret and the water surface 20 cm.
  • the calculated spraying speed was 11.82 m / min Take-off speed of the drafting system 130 m / min. This results in a Spin delay of 1:11. This condition was frozen in a water bath. Behind the drafting system, the monofilaments were wound on metal spools.
  • LCP Vinyl A 910
  • a sheath material a blend of 10% isophthalic acid modified polyethylene terephthalate, the proportion of which is 40% of the mixture makes up, and 40% of an elastomeric copolyester (Riteflex 655).
  • a 40-hole spinneret was used, each spinning orifice with one Fine bore of 0.80 mm.
  • the delivery was 319.6 g / min, of which 147.3 g / min for the core flow and 172.3 g / min for the sheath flow.
  • the core takes about 45%, the jacket about 55% of the cross-sectional area of the under the nozzle resulting monofilament.
  • the monofilaments were placed in a water bath with a pulley guided.
  • the water temperature was 92 ° C, the distance between the spinneret and the water surface 8 cm.
  • the calculated spraying speed was 11.82 m / min Take-off speed of the drafting system 130 m / min.
  • the spinning delay was 1:11. This condition was frozen in a water bath.
  • the monofilaments were wound up on disc spools behind the drafting system. A thermal aftertreatment (as in Example 1) did not take place.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Multicomponent Fibers (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)

Claims (15)

  1. Fibres à deux composants âme - gaine monofilamentaires, comprenant une âme, contenant un polymère de cristal liquide, et une gaine sensiblement homogène, qui se compose d'un mélange de 1 à 5 % en poids de polycarbonate et le reste, pour faire 100 %, d'un ou de plusieurs polyesters, qui ne sont pas des polycarbonates.
  2. Fibres monofilamentaires selon la revendication 1, caractérisées en ce que la gaine contient du polyéthylène téréphtalate, du polybutylène téréphtalate, du polyéthylène-2,6-naphtalate ou du poly-(1,4-bis(hydroxyméthyl)cyclohexane téréphtalate.
  3. Fibres monofilamentaires selon la revendication 1, caractérisées en ce que la gaine contient un polyester élastomère.
  4. Fibres monofilamentaires selon la revendication 3, caractérisées en ce que la gaine contient à titre de polyester élastomère du polytétrahydrofuranebutylène téréphtalate.
  5. Fibres monofilamentaires selon au moins l'une des revendications 1 à 4, caractérisées en ce que la gaine contient de 1 à 15 % en poids de polymère de cristal liquide, dont la gaine est constituée.
  6. Fibres monofilamentaires selon au moins une des revendications 1 à 5, caractérisées en ce que la gaine se compose d'un mélange, qui contient de 1 à 20 % en poids d'une polyoléfine fluorée et le reste, pour faire 100 % en poids, de polyester ainsi que de 1 à 5 % en poids de polycarbonate.
  7. Fibres monofilamentaires selon au moins une des revendications 1 à 6, caractérisées en ce que la surface transversale de l'âme constitue 40 à 90 % de la surface transversale totale de la fibre monofilamentaire et la surface transversale de la gaine constitue 10 à 60 % de la surface transversale totale de la fibre monofilamentaire.
  8. Fibres monofilamentaires selon au moins une des revendications 1 à 7, caractérisées en ce que la fibre monofilamentaire présente une section transversale circulaire, ovale, rectangulaire ou n-angulaire avec n ≥ 3.
  9. Fibres monofilamentaires selon au moins une des revendications 1 à 8, caractérisées en ce que l'âme est disposée au centre.
  10. Fibres monofilamentaires selon au moins une des revendications 1 à 9, caractérisées en ce que l'âme est disposée asymétriquement.
  11. Fibres monofilamentaires selon au moins une des revendications 1 à 10, caractérisées en ce que l'âme et/ou la gaine contient de 0,1 à 3 % en poids de mono- et/ou polycarbodiimide à titre d'agent d'occlusion.
  12. Procédé de fabrication de fils monofilamentaires à deux composants âme - gaine, caractérisé en ce que l'on extrude, par le biais d'un outil, un matériau d'âme, qui comprend un polymère de cristal liquide, et un matériau de gaine sensiblement homogène, qui se compose d'un mélange de 1 à 5 % en poids de polycarbonate et du reste, pour faire 100 %, d'un ou de plusieurs polyesters, qui ne sont pas des polycarbonates, sous forme de matière fondue, pour la fabrication des fibres âme - gaine, en ce que l'on refroidit les fibres monofilamentaires résultantes en deçà de la filière, au moyen d'un courant de gaz tempéré ou d'un liquide, à une température qui se situe au moins entre 0 et 30°C en dessous de la température de transition vitreuse du matériau de gaine, en mettant en adéquation la vitesse de sortie (vitesse d'injection), exprimée en volume par unité de surface et de temps, et la vitesse de tirage, de manière à ce qu'un décalage de filage de 1/5 à 1/30, de préférence de 1/8 à 1/15 soit maintenu et que les fibres monofilamentaires soient le cas échéant bobinées et également, le cas échéant, étuvées.
  13. Utilisation des fibres monofilamentaires selon au moins une des revendications 1 à 11 ou fabriquées selon un procédé selon la revendication 12 pour la fabrication de tamis et de filtres.
  14. Utilisation des fibres monofilamentaires selon au moins une des revendications 1 à 11 ou fabriquées selon un procédé selon la revendication 12 pour la fabrication d'attelages de machines à papier, en particulier pour la partie formage, pression et séchage.
  15. Utilisation des fibres monofilamentaires selon au moins une des revendications 1 à 11 ou fabriquées selon un procédé selon la revendication 12 pour le renforcement d'élastomères.
EP99114642A 1998-07-29 1999-07-27 Fibres à deux composants âme-gaine monofilamentaires Expired - Lifetime EP0976854B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19834008A DE19834008C2 (de) 1998-07-29 1998-07-29 Monofile Bikomponentenfäden des Kernmanteltyps, Verfahren zu deren Herstellung und deren Verwendung
DE19834008 1998-07-29

Publications (2)

Publication Number Publication Date
EP0976854A1 EP0976854A1 (fr) 2000-02-02
EP0976854B1 true EP0976854B1 (fr) 2004-11-10

Family

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EP99114642A Expired - Lifetime EP0976854B1 (fr) 1998-07-29 1999-07-27 Fibres à deux composants âme-gaine monofilamentaires

Country Status (7)

Country Link
US (1) US6254987B1 (fr)
EP (1) EP0976854B1 (fr)
AT (1) ATE282103T1 (fr)
CA (1) CA2278962A1 (fr)
DE (2) DE19834008C2 (fr)
ES (1) ES2227942T3 (fr)
PT (1) PT976854E (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011003102U1 (de) 2011-02-12 2012-03-22 Nextrusion Gmbh Magnetisierbare Fasern und Filamente als Markierfaden in Transportbändern
EP2974878A2 (fr) 2014-07-15 2016-01-20 Giesecke & Devrient GmbH Partie centrale de pages de données dotée d'une couche intérieure souple et son procédé de fabrication

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DE10008845C2 (de) * 2000-02-25 2002-11-14 Johns Manville Int Inc Formkörper für Transport, Verpackung, Lagerung und Behandlung von Lebensmitteln
US6589392B1 (en) 2001-10-18 2003-07-08 Shakespeare Company Llc Multicomponent monofilament for papermaking forming fabric
US6670034B2 (en) 2001-10-18 2003-12-30 Shakespeare Company, Llc Single ingredient, multi-structural filaments
WO2003100143A1 (fr) * 2002-05-27 2003-12-04 Huvis Corporation Fibre conjuguee de polytrimethylene terephtalate et procede de preparation
DE102004041755A1 (de) * 2004-08-28 2006-03-02 Teijin Monofilament Germany Gmbh Polyesterfasern, Verfahren zu deren Herstellung und deren Verwendung
US7846544B2 (en) * 2005-07-28 2010-12-07 Teijin Fibers Limited (Dope-dyed) polyester core-sheath monofilament having specific core/sheath intrinsic viscosity
DE102006012048A1 (de) * 2006-03-16 2007-09-20 Teijin Monofilament Germany Gmbh Polyesterfäden, Verfahren zu deren Herstellung und deren Verwendung
DE102007056631A1 (de) 2007-11-24 2009-05-28 Teijin Monofilament Germany Gmbh Hydrolysebeständig ausgerüstete Fäden, Verfahren zu deren Herstellung und deren Verwendung
WO2015115633A1 (fr) * 2014-01-28 2015-08-06 帝人株式会社 Fibre
DE102014009238A1 (de) * 2014-06-20 2015-12-24 Perlon Nextrusion Monofil GmbH Monofilamente mit hoher Abrieb- und Formbeständigkeit, textile Flächengebilde daraus und deren Verwendung
US20160160393A1 (en) * 2014-12-08 2016-06-09 Voith Patent Gmbh Monofilament, spiral fabric and method of forming a spiral fabric
CN104862825B (zh) * 2015-06-10 2017-10-27 马海燕 大直径皮芯型复合单丝及其生产方法
DE102017004481A1 (de) * 2017-05-11 2018-11-15 Carl Freudenberg Kg Textiles Flächengebilde für die Elektroisolation
US11358328B2 (en) * 2019-03-15 2022-06-14 GM Global Technology Operations LLC Composite fusion filament
CN114150400A (zh) * 2021-12-17 2022-03-08 无锡金通高纤股份有限公司 一种新型皮芯复合单丝及制备方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011003102U1 (de) 2011-02-12 2012-03-22 Nextrusion Gmbh Magnetisierbare Fasern und Filamente als Markierfaden in Transportbändern
DE102011011126A1 (de) 2011-02-12 2012-08-16 Nextrusion Gmbh Magnetisierbare Fasern und Filamente als Markierfaden in Transportbändern
EP2974878A2 (fr) 2014-07-15 2016-01-20 Giesecke & Devrient GmbH Partie centrale de pages de données dotée d'une couche intérieure souple et son procédé de fabrication
EP2974878A3 (fr) * 2014-07-15 2016-05-11 Giesecke & Devrient GmbH Partie centrale de pages de donnees dotee d'une couche interieure souple et son procede de fabrication

Also Published As

Publication number Publication date
EP0976854A1 (fr) 2000-02-02
ATE282103T1 (de) 2004-11-15
CA2278962A1 (fr) 2000-01-29
DE19834008C2 (de) 2000-11-30
ES2227942T3 (es) 2005-04-01
US6254987B1 (en) 2001-07-03
PT976854E (pt) 2005-02-28
DE19834008A1 (de) 2000-02-03
DE59911028D1 (de) 2004-12-16

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