EP0967306B1 - Monofilament à base de polyéthylène-2.6-naphthalate - Google Patents

Monofilament à base de polyéthylène-2.6-naphthalate Download PDF

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Publication number
EP0967306B1
EP0967306B1 EP99112139A EP99112139A EP0967306B1 EP 0967306 B1 EP0967306 B1 EP 0967306B1 EP 99112139 A EP99112139 A EP 99112139A EP 99112139 A EP99112139 A EP 99112139A EP 0967306 B1 EP0967306 B1 EP 0967306B1
Authority
EP
European Patent Office
Prior art keywords
monofilaments
accordance
manufacture
weight
contain
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
EP99112139A
Other languages
German (de)
English (en)
Other versions
EP0967306A1 (fr
Inventor
Joachim Stiller
Rex Dr. Delker
Hans-Joachim Dipl.-Ing. Brüning
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.)
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Application filed by Teijin Monofilament Germany GmbH filed Critical Teijin Monofilament Germany GmbH
Publication of EP0967306A1 publication Critical patent/EP0967306A1/fr
Application granted granted Critical
Publication of EP0967306B1 publication Critical patent/EP0967306B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • 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
    • 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 based on polyesters, namely Polyethylene-2,6-naphthalate, which liquid-crystalline polymers as admixtures contain, their manufacture and their use in particular for Manufacture of paper machine fabrics.
  • a monofilament in the sense of the invention is a continuous yarn consisting of a single continuous fiber, generally manufactured without twist, to understand which has a diameter of at least 0.08 mm. It differs of the single filaments or capillaries, which make up a multifilament yarn, especially due to the significantly larger diameter; they also differ Properties and techniques for processing monofilaments in many different ways Regarding the properties and processing methods of multifilament yarns.
  • Monofilaments are mainly used for the production of technical articles, in particular technically used fabrics, in contrast for multifilament yarns, which are mainly used in the textile industry.
  • EP-0 761 847 A2 describes paper machine screens which contain monofilaments from copolymers which contain 85 to 99 mol% of the repeating structural unit of the formula I. and contain 1 to 15 mol% of the recurring structural unit of the formula II, -OC-R 2 -CO-OR 3 -O- wherein R 1 is a radical of a dihydric aliphatic or cycloaliphatic alcohol or is derived from mixtures of such alcohols, R 2 is a radical of an aliphatic, cycloaliphatic or mononuclear aromatic dicarboxylic acid or is derived from mixtures of such dicarboxylic acids, R 3 is one of the meanings defined for R 1 assumes, and the amounts are based on the total amount of the polymer.
  • the monofilaments described there are characterized by valuable properties off, however, they are regarding the splicing behavior and the transverse strengths still room for improvement.
  • the distribution of the liquid-crystalline polymers in the is problematic Polyethylene terephthalate, since the liquid crystalline polymers tend to to be distributed in a droplet shape in the matrix, which among other things in a reinforced Expresses tendency to splicing.
  • This has been known for a long time Problem and others tried to solve by a method like that in the US PS 5,171,778, namely by processing a mixture of Polyalkylene terephthalate, a liquid crystalline polyester and a poly (O) -or - (N) -epoxyalkyl-substituted cyclic amide, imide or imidate, especially triglycidyl isocyanurate.
  • the object of the invention is therefore to provide monofilaments which in particular have an improved transverse strength and a high modulus own and are largely stable to hydrolysis.
  • Another object of the invention is a method for manufacturing such monofilaments according to claim 8.
  • Another object of the invention is the use of inventive monofilaments or monofilaments produced according to the invention claims 9 to 13.
  • the monofilaments according to the invention can be produced in the following way happened:
  • the starting products namely polyethylene-2,6-naphthalate and that liquid crystalline polymer and optionally polybutylene terephthalate and Closure agents and other additives are used immediately before spinning dried, preferably by heating in a dry atmosphere Vacuum.
  • These raw materials are mixed together homogeneously and then in an extruder at a melt temperature of 270 to 320 ° C, preferably 290 to 305 ° C, melted, filtered in a spin pack and through a Spinneret spun.
  • the melt threads come out (Monofilament) cooled in a spinning bath at a water temperature of approx. 70 ° C (quenched) and wound or pulled at a rate that is greater than the spray speed of the melt.
  • the spinning delay is 1: 1.5 to 1: 6.0, preferably 1: 3 to 1: 5, the spin draw speed 5 to 30 m / min, preferably 10 to 20 m / min.
  • the spun thread (monofilament) thus produced is subsequently stretched, preferably in several stages, in particular one, two or three stages post-stretched, with a total stretch ratio of 1: 4 to 1: 8, preferably 1: 5 to 1: 7 and then at temperatures of 190 to 250 ° C. heat-set, preferably 200 to 230 ° C.
  • the mechanical properties such as Initial module, maximum tensile force, maximum tensile force elongation, but also that Loop strength and knot strength as well as shrinkage are affected become.
  • the titer of the resulting monofilament also depends on of stretching.
  • the delivery rate and stretching are thus in line voted that the resulting monofilaments at the end a diameter of have at least 0.08 mm.
  • diameters of For example, 0.08 to 1.5 mm can be set.
  • the polyethylene-2,6-naphthalate used generally has one Molecular weight of 25,000 to 30,000 g / mol corresponding to a relative Viscosity from 1.80 to 1.90, measured as a 1 w / v% solution in di-chloroacetic acid.
  • sealing agents By adding sealing agents, it is possible to remove the end groups of the to use used polyester and thus stabilize the polymer. This is particularly advantageous if the monofilaments produced for the production of Paper machine screens or paper machine fabrics are used, so high demands are placed in particular on the hydrolysis stability.
  • Polyethylene terephthalate generally has a molecular weight of 25,000 to 30,000 g / mol corresponding to a relative viscosity of 2.0 to 2.3, measured as a 1 w / v% solution in di-chloroacetic acid.
  • the mixture to be spun can still contain other additives. So of course Catalyst residues resulting from polycondensation, such as antimony trioxide and tetraalkoxy titanates. Processing aids or Lubricants such as siloxanes can also be used.
  • the monofilaments can also be inorganic or organic pigments or Matting agents contain stabilizers, especially flame retardants like corresponding phosphorus compounds.
  • the processing of the monofilaments according to the invention can be carried out in a conventional manner happen, so the monofilaments on conventional wide weaving machines too Paper machine screens are woven.
  • the monofilaments according to the invention can also with other monofilaments such as polyamide monofilaments or Polyethylene terephthalate monofilaments are processed together.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)
  • Materials For Medical Uses (AREA)
  • Polyesters Or Polycarbonates (AREA)

Claims (13)

  1. Monofils à base de polyéthylène-2,6-naphtalate contenant du polyéthylène-2,6-naphtalate à concurrence de 60 à 99,9 % en poids, un ou plusieurs polymères mésomorphes à concurrence de 0,1 à 10 % en poids, du polybutylène téréphtalate à concurrence de 0 à 15 % en poids et un agent de blocage à concurrence de 0 à 3 % en poids, ainsi que le cas échéant d'autres additifs.
  2. Monofils selon la revendication 1, caractérisés en ce qu'ils contiennent des polymères mésomorphes à concurrence de 0,5 à 7, de préférence de 1 à 5 % en poids, du polybutylène téréphtalate à concurrence de 3 à 12, de préférence de 4 à 11 % en poids et un agent de blocage à concurrence de 0,15 à 2,25 % en poids.
  3. Monofils selon la revendication 1 ou 2, caractérisés en ce qu'ils contiennent du monocarbodiimide à titre d'agent de blocage à concurrence de 0,4 à 1, de préférence de 0,45 à 0,6 % en poids.
  4. Monofils selon la revendication 1 ou 2, caractérisés en ce qu'ils contiennent du polycarbodiimide à titre d'agent de blocage à concurrence de 0,15 à 2,25, de préférence de 0,75 à 1,8 % en poids.
  5. Monofils selon au moins une des revendications 1 à 4, caractérisés en ce qu'ils contiennent un mélange de monocarbodiimide et de polycarbodiimide à titre d'agent de blocage.
  6. Monofils selon au moins une des revendications 1 à 5, caractérisés en ce qu'ils contiennent, à titre de polymère mésomorphe, un produit de polycondensation à base d'acide p-hydroxybenzoïque et d'acide 2,6-hydroxynaphtoïque.
  7. Monofils selon la revendication 6, caractérisés en ce que le produit de polycondensation est composé d'acide p-hydroxybenzoïque à concurrence de 70 à 80, de préférence de 72 à 74 moles %, et d'acide 2,6-hydroxynaphtoïque à concurrence de 20 à 30, de préférence de 26 à 28 moles %.
  8. Procédé pour la fabrication de monofils selon une ou plusieurs des revendications 1 à 7, caractérisé en ce qu'on soumet à un mélange intime du polyéthylène-2,6-naphtalate, un ou plusieurs polymères mésomorphes, ainsi que le cas échéant du polybutylène téréphtalate, des agents de blocage et d'autres additifs, on transforme le mélange en masse fondue pour obtenir des monofils, on refroidit les monofils une fois que ces derniers ont quitté la filière, l'extrusion et l'étirage étant adaptés l'un à l'autre de telle sorte que l'on obtient des monofils qui possèdent un diamètre de 0,08 à 1,5 mm.
  9. Utilisation des monofils selon au moins une des revendications 1 à 7 ou fabriqués conformément à un procédé selon la revendication 8, pour la fabrication de tamis ou de filtres.
  10. Utilisation des monofils selon au moins une des revendications 1 à 7 ou fabriqués conformément à un procédé selon la revendication 8, pour la fabrication de tamis destinés à des machines de fabrication du papier, respectivement à des gazes métalliques pour des machines de fabrication du papier.
  11. Utilisation des monofils selon au moins une des revendications 1 à 7 ou fabriqués conformément à un procédé selon la revendication 8, pour le renforcement d'élastomères.
  12. Utilisation des monofils selon au moins une des revendications 1 à 7 ou fabriqués conformément à un procédé selon la revendication 8, pour des tissus destinés à des bandes transporteuses.
  13. Utilisation selon la revendication 9 ou 12, pour la fabrication de tissus destinés à des bandes transporteuses, de tamis ou de filtres pour l'industrie alimentaire.
EP99112139A 1998-06-26 1999-06-24 Monofilament à base de polyéthylène-2.6-naphthalate Expired - Lifetime EP0967306B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828517 1998-06-26
DE19828517A DE19828517C2 (de) 1998-06-26 1998-06-26 Monofile auf der Basis von Polyethylen-2,6-naphthalat

Publications (2)

Publication Number Publication Date
EP0967306A1 EP0967306A1 (fr) 1999-12-29
EP0967306B1 true EP0967306B1 (fr) 2003-09-03

Family

ID=7872109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112139A Expired - Lifetime EP0967306B1 (fr) 1998-06-26 1999-06-24 Monofilament à base de polyéthylène-2.6-naphthalate

Country Status (7)

Country Link
US (1) US6165614A (fr)
EP (1) EP0967306B1 (fr)
AT (1) ATE248938T1 (fr)
CA (1) CA2276642A1 (fr)
DE (2) DE19828517C2 (fr)
DK (1) DK0967306T3 (fr)
ES (1) ES2210904T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2311845C (fr) * 2000-06-16 2008-10-07 Lippert Pintlepin Mfg. Inc. Spirale d'interconnexion d'extremites de segments de courroie sans fin
US6643899B2 (en) 2000-06-16 2003-11-11 André Corriveau Spiral for interconnecting ends of endless belt segments
EP1463897A1 (fr) * 2001-12-10 2004-10-06 André Corriveau Spirale permettant de raccorder les extremites des segments d'une courroie sans fin
TWI391549B (zh) * 2005-05-24 2013-04-01 Albany Int Corp 用於抵銷以經紗接結方式所形成之織物中之捲曲的單纖及用於形成具阻抗邊緣捲曲之多層經紗接結造紙機布的方法
FI20115099L (fi) 2011-01-31 2012-08-01 Metso Fabrics Oy Kenkäpuristinhihna, menetelmä sen valmistamiseksi ja käyttö kenkäpuristimessa
CN103276471B (zh) * 2013-06-27 2016-05-25 河南华丰网业科技股份有限公司 造纸网用耐磨单丝的制备方法
BR112016023020A2 (pt) * 2014-04-01 2017-10-10 Kordsa Global Endustriyel Iplik Ve Kord Bezi Sanayi Ve Ticaret As sistema para produção de fio industrial derivado de material à base de compósito de naftalato de polietileno

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JPS5414320B2 (fr) * 1972-07-25 1979-06-06
US4026973A (en) * 1973-08-31 1977-05-31 Teijin Limited Process for preparing heat-resistant aromatic polyester filaments
JPS5465747A (en) * 1977-11-04 1979-05-26 Motoo Takayanagi High molecular composite body
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JPH04500247A (ja) * 1989-04-24 1992-01-16 アルバニー インターナショナル コーポレイション 製紙機フェルト
DE3930845A1 (de) * 1989-09-15 1991-03-28 Hoechst Ag Mit carbodiimiden modifizierte polyesterfasern und verfahren zu ihrer herstellung
US5171778A (en) * 1990-03-12 1992-12-15 General Electric Company Melt blends of polyesters
US5006613A (en) * 1990-07-30 1991-04-09 Eastman Kodak Company Tricomponent polymer blends of poly(ethylene tereptholate), poly(ethylene naphthalate) and a copolyester
JPH04100914U (ja) * 1991-02-07 1992-09-01 カルソニツク株式会社 空気調和装置に連動して入射光量を自動調整する自動車用ウインドガラス
JP3359730B2 (ja) * 1994-04-06 2002-12-24 帝人株式会社 湿熱耐久性の改良された産業資材用ポリエステルモノフィラメントおよびその製造方法
JPH11506487A (ja) * 1995-06-02 1999-06-08 イーストマン ケミカル カンパニー 加水分解安定性の改良された２，６−ナフタレンジカルボン酸のポリエステル
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US5688874A (en) * 1995-12-22 1997-11-18 Eastman Chemical Company Process for preparing blends of poly(ethylene terephthalate) and poly(ethylene 2,6-naphthalenedicarboxylate)
WO1998012367A1 (fr) * 1996-09-19 1998-03-26 Rhodia Filtec Ag Monofilaments en polyethylenenaphtalate resistants a la fibrillation et a l'usure par frottement
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Also Published As

Publication number Publication date
ES2210904T3 (es) 2004-07-01
DE19828517C2 (de) 2000-12-28
DE59906826D1 (de) 2003-10-09
EP0967306A1 (fr) 1999-12-29
DK0967306T3 (da) 2003-11-03
CA2276642A1 (fr) 1999-12-26
US6165614A (en) 2000-12-26
ATE248938T1 (de) 2003-09-15
DE19828517A1 (de) 1999-12-30

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