EP0345307B1 - Verfahren zur herstellung eines glatten polyesterfadens und polyesterfaden hergestellt nach dem verfahren - Google Patents

Verfahren zur herstellung eines glatten polyesterfadens und polyesterfaden hergestellt nach dem verfahren Download PDF

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Publication number
EP0345307B1
EP0345307B1 EP88908130A EP88908130A EP0345307B1 EP 0345307 B1 EP0345307 B1 EP 0345307B1 EP 88908130 A EP88908130 A EP 88908130A EP 88908130 A EP88908130 A EP 88908130A EP 0345307 B1 EP0345307 B1 EP 0345307B1
Authority
EP
European Patent Office
Prior art keywords
tex
filament yarn
polyester
thread
polyester filament
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
EP88908130A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0345307A1 (de
Inventor
Hugo Specker
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.)
Viscosuisse SA
Original Assignee
Rhone Poulenc Viscosuisse SA
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
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Application filed by Rhone Poulenc Viscosuisse SA filed Critical Rhone Poulenc Viscosuisse SA
Priority to AT88908130T priority Critical patent/ATE76665T1/de
Publication of EP0345307A1 publication Critical patent/EP0345307A1/de
Application granted granted Critical
Publication of EP0345307B1 publication Critical patent/EP0345307B1/de
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
    • 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
    • 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
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/229—Relaxing
    • 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

Definitions

  • the invention relates to a method for producing a cold-drawn, smooth polyester filament thread made of POY with an intrinsic viscosity of 0.6 to 0.9 dl / g and a polyester filament thread produced by the method.
  • a smooth multifilament filament thread is to be understood as a non-textured filament thread, which retains its uncurled flat shape even after boiling in water.
  • Polyester is to be understood as a thermoplastic which was produced from at least 85% by weight of terephthalic acid and ethylene glycol.
  • Polyester-POY Partially Oriented Yarn
  • a polyester thread which has been drawn off from the spinneret at a speed of about 2500 to 3500 m / min.
  • the take-off from the spinneret can take place directly by means of the winder or a pair of rollers can also be connected in between.
  • the pair of rolls then runs at the same or slightly different speed than the winder, which is used to control the thread tension in order to improve the winding structure.
  • the exact spinning When it comes to the speed of a good POY, it depends on various spinning conditions, but above all on the fibril titer. For a fibril titer of 1 dtex the lower limit is more correct, for a fibril titer of 10 dtex the upper limit.
  • cold stretching we mean stretching at thread temperatures that are significantly below the glass transition temperature of the polyester, i.e. significantly below 85 ° C.
  • the delivery roll can be unheated for stretching or have a temperature of up to 70 ° C.
  • Homogeneous cold drawing should be understood to mean that the draw ratio must be chosen so high that there are no undrawn or insufficiently drawn, i.e. stretched areas may be present under the set stretch ratio, which e.g. can be recognized by the Uster%, which should generally be ⁇ 1.4.
  • the draw ratio must be at least 1.8 depending on the spinning speed.
  • the object of the invention is to provide a method with which a polyester filament thread can be produced which does not have the disadvantages mentioned and also has a high initial modulus, high strength and low shrinkage.
  • the object is achieved according to the invention by the feature of claim 1 and is characterized in that the POY is cold-drawn with a constant draw ratio between 1.8 and 2.5 and then with a constant advance of between 3 and 10% above the temperature of the glass transition point of the polymer is relaxed.
  • Relaxing in dry medium has several advantages over wet relaxation. It brings significant simplifications in terms of production technology, such as avoiding a drying stage, saving energy, no machine pollution, and no pollution of the air conditioning by releasing water vapor.
  • Threads are obtained which only change insignificantly in their force-elongation behavior compared to the starting material during thermal treatment. Such an effect was not expected from the start.
  • a high initial modulus of> 800 cN / tex has the advantage that the risk of damage caused by known thread tension peaks occurring in the weaving, knitting or knitting process is significantly reduced in the manufacture of textile fabrics.
  • a thread with a lower initial module will no longer meet the requirements imposed by the high speeds of the processing machines. It is therefore expedient to produce an initial modulus of 800 to approximately 1200 cN / tex and higher with a relatively low-viscosity starting polymer.
  • a reversibility limit above 9 cN / tex of thread tension due to further processing should be used pick up pointed. Such thread tension peaks lead to defects in the fabric and thus to a reduction in production output. The highest possible reversibility limit is sought.
  • the reference strains (D45) before and after the treatment in boiling water is less than 20%, in particular less than 18%, preferably less than 17%.
  • the reference elongation (D45) is expediently chosen to be the elongation which is measured at 45 cN / tex and can be regarded as a measure for characterizing the KD profile of the threads.
  • the thread according to the invention should simultaneously meet the following conditions:
  • Such a thread should also have a thermal shrinkage at 160 ° C of less than 7%.
  • the largely shrunk thread has the advantage that it can be twisted directly onto a perforated dye tube in the event of bobbin dyeing without steaming and rewinding.
  • a polyester POY according to the preamble of claim 1 with an intrinsic viscosity of 0.67 dl / g serves as the starting material for all examples.
  • a suitable polyethylene terephthalate mass was melted at 285 ° C in an extruder and spun at 3100 m / min through nozzles to a polyester POY with the titer dtex 140 f 24 glossy round, cold stretched on a stretching machine in a ratio of 1: 2.12 with a stretching pin and then relaxed at 5% lead.
  • the relaxation was carried out using a plate heater of 20 cm in length at 225 ° C.
  • the thread is then swirled according to a swirling intensity of approx. 20 knots / m.
  • the delivery speed before stretching is 203.7 m / min, in front of the relaxation zone 431.8 m / min, the take-off speed ascertainable after relaxation is 411.2 m / min.
  • the resulting thread is wound up.
  • polyester filament threads according to the invention are described by their characteristic KD curves in FIGS. 2-4.
  • the reference numeral 1 denotes a first delivery plant 1.
  • the delivery unit 1 is followed by a second delivery unit 2 with a separating roller 2 '.
  • a heater 3 is arranged between the delivery unit 2 and a take-off unit 4 with a separating roller 4 ', which is followed by a winding unit.
  • An undrawn polyester POY 5a is taken up by the delivery unit 1 and cold-drawn by the delivery unit 2 via a stretching pin 1a in a stretching zone 5b.
  • the take-off unit 4 runs at a lower speed than the delivery unit 2, as a result of which the drawn thread passes through the heater 3 with an adjustable advance in a relaxation zone 5c. The result is a hot-relaxed thread with the properties according to the invention.
  • Fig. 3 shows practically the same curve as Fig. 2 with a higher titer.
  • curves a and b are slightly flatter.
  • Known polyester threads drawn from POY show a much more pronounced shrinking saddle (d) after the stress-free treatment in boiling water, and the strengths are also significantly below the level of the thread according to the invention.
  • the thread according to the invention is particularly suitable for use for sewing threads, sewing threads and embroidery threads for clothing textiles, binding threads for weft knitted articles and as high-modulus shrinkage yarn for semi-technical articles such as, for example, light coating fabrics.
  • the thread is also suitable for use with cover sheets, geotextiles and curtains.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Polyesters Or Polycarbonates (AREA)
EP88908130A 1987-10-13 1988-10-06 Verfahren zur herstellung eines glatten polyesterfadens und polyesterfaden hergestellt nach dem verfahren Expired - Lifetime EP0345307B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88908130T ATE76665T1 (de) 1987-10-13 1988-10-06 Verfahren zur herstellung eines glatten polyesterfadens und polyesterfaden hergestellt nach dem verfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH399787 1987-10-13
CH3997/87 1987-10-30

Publications (2)

Publication Number Publication Date
EP0345307A1 EP0345307A1 (de) 1989-12-13
EP0345307B1 true EP0345307B1 (de) 1992-05-27

Family

ID=4267891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908130A Expired - Lifetime EP0345307B1 (de) 1987-10-13 1988-10-06 Verfahren zur herstellung eines glatten polyesterfadens und polyesterfaden hergestellt nach dem verfahren

Country Status (8)

Country Link
US (1) US5106685A (da)
EP (1) EP0345307B1 (da)
AT (1) ATE76665T1 (da)
BR (1) BR8807246A (da)
DE (1) DE3871523D1 (da)
DK (1) DK285489A (da)
FI (1) FI95287C (da)
WO (1) WO1989003437A1 (da)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3917338A1 (de) * 1989-05-27 1990-11-29 Didier Eng Verfahren und vorrichtung zum herstellen von glattgarn aus thermoplastischen kunststoffaeden, insbesondere von glattem polyestergarn
ID846B (id) * 1991-12-13 1996-08-01 Kolon Inc Serat benang, benang ban poliester dan cara memproduksinya
FR2750706B1 (fr) * 1996-07-04 1998-11-20 Rhone Poulenc Fibres & Polymer Filaments en matiere synthetique et procede de fabrication d'un tel filament
DE19820529A1 (de) 1998-05-08 1999-11-11 Lohmann Therapie Syst Lts Wirkstoff enthaltende orale und mucosale Zubereitung mit steuerbarer Wirkstofffreisetzung und ihre Verwendung
AU2003281697A1 (en) * 2002-07-26 2004-02-16 Kolon Industries, Inc. A high strength low shrinkage polyester drawn yarn, and a process of preparing for the same
WO2012046007A1 (en) 2010-10-07 2012-04-12 Coats Plc Sewing thread and its manufacture
WO2015152844A1 (en) * 2014-04-01 2015-10-08 Kordsa Global Endustriyel Iplik Ve Kord Bezi Sanayi Ve Ticaret Anonim Sirketi A system for industrial yarn production from composite polyethylene naphthalate material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651198A (en) * 1968-02-15 1972-03-21 Teijin Ltd Drawing and heat treatments of polyester filaments
DE2004558B2 (de) * 1969-02-03 1975-03-27 Teijin Ltd., Osaka (Japan) Verfahren zum Strecken von Polyesterfäden
US3816486A (en) * 1969-11-26 1974-06-11 Du Pont Two stage drawn and relaxed staple fiber
DE2023526A1 (de) * 1970-05-14 1971-11-25 Farbwerke Hoechst AG, vorm. Meister Lucius & Brüning, 6000 Frankfurt Verfahren zur Herstellung von schrumpfarmen Polyesterfäden
DE2318887C3 (de) * 1973-04-14 1982-11-11 Akzo Gmbh, 5600 Wuppertal Verfahren zur Herstellung von Polyesterfäden durch Schrumpfbehandlung heißverstreckter Fäden in zwei Stufen
FR2414568A1 (fr) * 1978-01-13 1979-08-10 Asa Sa Procede et dispositif pour le traitement de fils chimiques multifilamentaires partiellement etires
US4195052A (en) * 1976-10-26 1980-03-25 Celanese Corporation Production of improved polyester filaments of high strength possessing an unusually stable internal structure
JPS5947726B2 (ja) 1977-05-16 1984-11-21 帝人株式会社 ポリエステル繊維の製造法
BR7805878A (pt) * 1977-09-12 1979-04-24 Du Pont Fio plano e estopa contendo filamentos continuos de poli(etileno-tereftalato),fio plano de poliester e estopa de poli-ester contendo filamentos continuos de poli(etileno-tereftalato)e fibra textil de poli(etileno-tereftalato)
CA1292602C (en) * 1986-10-24 1991-12-03 Hugo Specker Process for producing a smooth polyester yarn and polyester yarn produced by said process

Also Published As

Publication number Publication date
DE3871523D1 (de) 1992-07-02
DK285489D0 (da) 1989-06-12
FI892673L (fi) 1989-06-01
DK285489A (da) 1989-06-12
BR8807246A (pt) 1989-10-31
EP0345307A1 (de) 1989-12-13
FI95287C (fi) 1996-01-10
FI892673A0 (fi) 1989-06-01
FI95287B (fi) 1995-09-29
US5106685A (en) 1992-04-21
ATE76665T1 (de) 1992-06-15
WO1989003437A1 (fr) 1989-04-20

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