EP2084322A1 - Procédé pour produire un fil multifilament - Google Patents

Procédé pour produire un fil multifilament

Info

Publication number
EP2084322A1
EP2084322A1 EP07819774A EP07819774A EP2084322A1 EP 2084322 A1 EP2084322 A1 EP 2084322A1 EP 07819774 A EP07819774 A EP 07819774A EP 07819774 A EP07819774 A EP 07819774A EP 2084322 A1 EP2084322 A1 EP 2084322A1
Authority
EP
European Patent Office
Prior art keywords
yarn
spin finish
thermoplastic polymer
filaments
secondary spin
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.)
Granted
Application number
EP07819774A
Other languages
German (de)
English (en)
Other versions
EP2084322B1 (fr
Inventor
Johannes Gerardus Maria Aalbers
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.)
API Institute
Original Assignee
Diolen Industrial Fibers BV
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 Diolen Industrial Fibers BV filed Critical Diolen Industrial Fibers BV
Priority to PL07819774T priority Critical patent/PL2084322T3/pl
Priority to EP07819774A priority patent/EP2084322B1/fr
Publication of EP2084322A1 publication Critical patent/EP2084322A1/fr
Application granted granted Critical
Publication of EP2084322B1 publication Critical patent/EP2084322B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
    • 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
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • 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
    • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
    • D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters

Definitions

  • the invention pertains a process for producing a multifilament yarn from a molten thermoplastic polymer comprising melt-spinning of the thermoplastic polymer, extruding the molten thermoplastic polymer through a spinneret to form a plurality of filaments, and passing the filaments through a cooling zone to enable the spun filaments to be solidified to produce an undrawn yarn, applying a primary spin finish to the undrawn yarn and continuously drawing the undrawn yarn in one or more stages to produce a drawn yarn, applying a secondary spin finish during or after drawing and subsequently winding the drawn yarn.
  • Such a process is known from U.S. Pat. No. 6,077,468, wherein a molten thermoplastic polymer fiber is extruded through a spinneret to form a plurality of filaments.
  • the filaments are cooled, typically by passing through an air quenching apparatus maintained at or slightly below room temperature.
  • the filaments are then bundled and directed across guides or kiss rolls, whereupon they are treated with a primary spin finish.
  • the filaments After receiving the primary spin finish treatment, the filaments are generally stretched. Stretching may be accomplished over a number of godets or pull rolls that are at elevated temperatures (e.g., from 85 -115 0 C) sufficient to soften the thermoplastic polymer. By rotating the rolls at different speeds, stretching of the filaments can be obtained.
  • Spin finishes can be applied to fibers at different stages of the production process, depending upon what balance of performance properties are demanded from the fiber at that particular production stage.
  • a primary spin finish is generally applied to the fibers soon after they are extruded from the spinneret, cooled, and bundled, but prior to stretching the fiber.
  • the primary spin finish reduces fiber-to-metal or fiber-to-ceramic friction while the fiber travels along the early stage production equipment. Furthermore the static electricity is reduced and the cohesion of the filaments is improved.
  • the primary spin finish would have properties, which eliminate the need for any secondary spin finish, this is not always possible.
  • fiber- to-metal or fiber-to-ceramic friction may be different from the required friction of the final article.
  • a primary spin finish must be optimized to allow the initial stages of yarn production to proceed in an efficient manner. If the succeeding stages have different requirements, a secondary finish will have to be applied.
  • a secondary spin finish will also have to be applied if the primary spin finish is removed, or almost removed, during a processing step. Application of a secondary spin finish is often necessary during the later stage production (i.e., after stretching, crimping and texturizing of the fiber).
  • Aqueous solutions and emulsions have the drawback that they require often troublesome emulsification steps and are sensitive to bacterial growth.
  • air pollution will be increased.
  • the hot yarns while travelling at high speed through the emulsions or solutions cause extra evaporation and splashing of the solvents with all the detrimental effects attributed to this effect.
  • the improvement lies in a process as described in the introductory paragraph or in the preamble of claim 1 , wherein the yarn temperature when entering the secondary spin finish is greater than 150 0 C, that the secondary spin finish contains one or more adhesion activating components in an oil based composition and that the oil based composition consists of components with an evaporation rate of less than 10 wt.-% at the given yarn temperature.
  • the evaporation rate is determined according to the so-called Noack volatility.
  • the Noack volatility of an oil is defined as the weight loss of the oil when it is held under isothermal conditions at a given temperature for a period of 1 hour under a constant flow of air.
  • the Noack volatility can be quantified according to ASTM D6375-05 "Standard Test Method for Evaporation Loss of Lubricating Oils by Thermogravimetric Analyzer (TGA) Noack Method".
  • the yarn temperature when entering the secondary spin finish in the process of the invention is considerably higher. At first sight, this seems to render the process even more problematic when looking at the splashing and evaporation problems described above.
  • the temperature of the running yarn upon entering is preferably between 150 and 220 0 C, even more preferably between 170 and 200 0 C. This can be controlled by varying the distance between the finish applicator and the drawing section of the spin process. The closer the point of application lies to a heated godet, the more equals the yarn temperature upon entering the secondary spin finish that of the respective godet. As a consequence, it is possible to determine the yarn temperature when entering the secondary spin finish via the temperature of the heated godet in the drawing section.
  • Drawing in the context of the invention is to be understood in its broadest sense, both accomplished by a draw ratio greater and smaller than 1. While draw ratios greater than 1 lead to an increase of the filament length, those smaller than one are commonly known as relaxation.
  • the yarn speed when entering the secondary spin finish is greater than 3000 m/min, more preferably greater than 5000 m/min, even more preferred between 5500 and 7000 m/min.
  • Multifilament yarns produced at speeds greater than 5000 m/min are suitable as tire yarns, whereas yarns produced at lower speeds are better suited for so-called technical applications, such as reinforcements for conveyor belts.
  • the oil based composition of the secondary spin finish in the claimed process is a neat oil. Using this type of oil based composition the problems related to splashing and evaporation of the solvent in every concentration can be eliminated.
  • the term "neat oil” means a substance or a composition of substances that is liquid at room temperature and in particular does not comprise a solvent or any dispersion means. Further the neat oil preferably exhibits a cinematic viscosity in the range up to 200 mm 2 /s.
  • the neat oil consists preferably of ethoxylated fatty esters.
  • the neat oil may also contain additives typically found in a finish formulation, such as antistatic agents, antioxidants, UV stabilizer etc.
  • Secondary spin finish can for example be performed by a highspeed yarn finish applicator as described in WO 2002/024987 A1 , the contents of which is herein incorporated by reference.
  • Suitable adhesion activating components are known to those skilled in the art and encompass in particular epoxides, such as glycerol polyglycidyl ether, in combination with amine hardeners like fatty amines.
  • epoxides such as glycerol polyglycidyl ether
  • amine hardeners like fatty amines.
  • a preferred embodiment, in particular when using a neat oil as the oil based composition is, however, the requirement that the adhesion activating components should be soluble in the neat oil.
  • the drawing of the undrawn yarn is performed at a draw ratio in the range from 1.5 to 4.0.
  • the wind-up velocity in such continuous process is then in a range from 3000 to 8000 m/min.
  • the application of the secondary spin finish can take place before or after the relaxation step. If a multistage drawing is performed the application of the neat oil as secondary spin finish can be done after the first drawing stage or later. Preferably, the neat oil application takes place after the final drawing step is performed, i.e. before the winding-up is taking place.
  • the person skilled in the art also refers to an "after oiling" step in such cases.
  • thermoplastic polymer is a polyester or a co- polyester. Even more preferred as thermoplastic polymer is a polyester that contains 95 mol-percent or more ethylene terephthalate as a repeating unit.
  • adhesion activated polyethylene terephthalate can be conveniently manufactured.
  • the process according to the invention is particularly suitable for those yarns that exhibit higher tenacity and for that reason it is preferred if the tenacity of the drawn yarn is 60 cN/tex and more (measured according to ASTM 885).
  • the process of the invention is a combination of after-oiling, higher temperature of the yarn and the use of an adhesion activating finish composition based on 100 % pure oil.
  • the cooling zone of the process according to the invention comprises two parts, wherein in the first and upper part of the cooling zone a gaseous cooling medium, such as air, is directed in such a way that it flows through the multifilaments transversely and that the cooling medium leaves the multifilaments practically completely on the side opposite the inflow side, and in the second and lower part of the cooling zone the multifilaments being cooled further essentially through self-suction of the gaseous cooling medium surrounding the multifilaments.
  • a gaseous cooling medium such as air
  • tube of a length between 10 and 40 cm which can be heated or not, in order to achieve a retarded cooling of the multifilaments under the spinneret before entering the cooling zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)
EP07819774A 2006-11-18 2007-11-13 Procédé pour produire un fil multifilament Not-in-force EP2084322B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL07819774T PL2084322T3 (pl) 2006-11-18 2007-11-13 Sposób wytwarzania przędzy wielowłókienkowej
EP07819774A EP2084322B1 (fr) 2006-11-18 2007-11-13 Procédé pour produire un fil multifilament

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06023981 2006-11-18
PCT/EP2007/009788 WO2008058696A1 (fr) 2006-11-18 2007-11-13 Procédé pour produire un fil multifilament
EP07819774A EP2084322B1 (fr) 2006-11-18 2007-11-13 Procédé pour produire un fil multifilament

Publications (2)

Publication Number Publication Date
EP2084322A1 true EP2084322A1 (fr) 2009-08-05
EP2084322B1 EP2084322B1 (fr) 2011-03-30

Family

ID=37733778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07819774A Not-in-force EP2084322B1 (fr) 2006-11-18 2007-11-13 Procédé pour produire un fil multifilament

Country Status (7)

Country Link
EP (1) EP2084322B1 (fr)
AT (1) ATE503884T1 (fr)
DE (1) DE602007013599D1 (fr)
ES (1) ES2364199T3 (fr)
PL (1) PL2084322T3 (fr)
PT (1) PT2084322E (fr)
WO (1) WO2008058696A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702007B1 (de) * 2009-10-10 2014-05-15 Oerlikon Textile Gmbh & Co Kg Verfahren und Vorrichtung zum Schmelzspinnen, Behandeln und Aufwickeln eines synthetischen Fadens.
EP2598678B1 (fr) * 2010-07-28 2014-12-17 Oerlikon Textile GmbH & Co. KG Dispositif pour le filage à chaud, l'étirage et le bobinage de plusieurs fils multifilaments
CN113337931B (zh) * 2021-04-22 2022-08-26 杭州勤想实业有限公司 一种全真丝均匀可控仿麻竹节纱的生产方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575974A (en) * 1980-06-06 1982-01-12 Unitika Ltd Production of polyester fiber with good adheherence with rubbers
US4348517A (en) 1980-12-09 1982-09-07 Allied Chemical Corporation Process and finish composition for producing adhesive active polyester yarn
US4565717A (en) * 1983-10-20 1986-01-21 E. I. Dupont De Nemours And Company Antisoiling treatment of synthetic filaments
US6077468A (en) 1999-01-11 2000-06-20 3M Innovative Properties Company Process of drawing fibers
US6669993B2 (en) 2000-09-19 2003-12-30 Honeywell International Inc. High speed yarn finish application
EP1205593B1 (fr) * 2000-11-08 2004-01-28 ARTEVA TECHNOLOGIES S.à.r.l. Fil en polyester enduit successivement avec des apprêts réactifs, procédé pour la production du fil, et matériau composite en caoutchouc le comprenant
CA2491647C (fr) 2002-07-05 2011-09-27 Diolen Industrial Fibers B.V. Procede de filature

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008058696A1 *

Also Published As

Publication number Publication date
ATE503884T1 (de) 2011-04-15
WO2008058696A1 (fr) 2008-05-22
EP2084322B1 (fr) 2011-03-30
PT2084322E (pt) 2011-06-16
DE602007013599D1 (de) 2011-05-12
PL2084322T3 (pl) 2012-01-31
ES2364199T3 (es) 2011-08-26

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