EP0423278A1 - Process for the production of fine monofilaments, and a monofilament produced by this process. - Google Patents

Process for the production of fine monofilaments, and a monofilament produced by this process.

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Publication number
EP0423278A1
EP0423278A1 EP90906103A EP90906103A EP0423278A1 EP 0423278 A1 EP0423278 A1 EP 0423278A1 EP 90906103 A EP90906103 A EP 90906103A EP 90906103 A EP90906103 A EP 90906103A EP 0423278 A1 EP0423278 A1 EP 0423278A1
Authority
EP
European Patent Office
Prior art keywords
monofilaments
roller
dtex
monofilament
production
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
EP90906103A
Other languages
German (de)
French (fr)
Other versions
EP0423278B2 (en
EP0423278B1 (en
Inventor
Klaus Fischer
Halim Baris
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
Societe de la Viscose Suisse 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, Societe de la Viscose Suisse SA filed Critical Rhone Poulenc Viscosuisse SA
Publication of EP0423278A1 publication Critical patent/EP0423278A1/en
Application granted granted Critical
Publication of EP0423278B1 publication Critical patent/EP0423278B1/en
Publication of EP0423278B2 publication Critical patent/EP0423278B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • 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
    • D01D5/098—Melt spinning methods with simultaneous stretching

Definitions

  • the invention relates to a method for producing thermoplastic monofilaments in a titer range of 5-25 dtex, and a monofilament produced by the method.
  • Fine monofilament yarns up to about 33 dtex are spun at spinning speeds below 1000 m/min, cooled with blown air, wound up and stretched separately in a second operation at about 750 m/min.
  • the object of the invention is to provide a method for the production of fine monofilaments which, without a separate stretching process at high winding speeds, achieves and/or improves the properties of known monofilaments.
  • a further object is to vary the method in such a way that the desired properties of the monofilaments can be achieved through the setting parameters of the device.
  • melt-spun filaments are drawn off over an air-cooled rotating roller, spin-finished and wound up at a speed of 4000 to 6000 m/min.
  • the roller as a cooling element, it is possible for the first time to spin monofilaments in the claimed titre range at high speeds. It is also particularly advantageous that the process can be carried out in one stage, i.e. without an additional drafting system. The process is therefore very uncomplicated and, by appropriately varying the roll parameters, such as peripheral speed, distance between spinneret and roll and cooling time, offers a simple prerequisite for influencing the monofilament properties in a targeted manner.
  • the thread properties can also be influenced by means of the peripheral speed of the roller and the distance between the spinneret and the roller.
  • the thermal treatment can be useful to thermally treat the monofilaments in the area between the roller and the winder.
  • the thermal treatment then takes place in an integrated manner at 110-200.degree. C., in particular at 150-170.degree . C., preferably at 150-160.degree.
  • the thermal treatment can be particularly useful in the case of fine monofilaments in order to achieve the properties according to the invention.
  • thermoplastic monofilaments made from, for example, polyesters, polyamides, polyacrylic, polyvinyl fluoride, polyethylene or polypropylene.
  • the roller is made of copper, but it can also be made of another metal with good thermal conductivity, such as aluminum or stainless steel.
  • the roller made of a material with good thermal conductivity can also be surface-coated and can be actively cooled.
  • the monofilament produced according to the method is characterized by a round profile, a boil-off shrinkage of ⁇ 10%, preferably ⁇ 6%, an elongation of ⁇ 40% and a strength of >35 cN/tex.
  • the number of monofilaments that can be produced from a spinneret is not critical for the process according to the invention and is only dependent on the width of the cooling roller and the arrangement of the spools.
  • 1 is a spinning block. Fila ments are denoted by 2, 2′ and 2′′.
  • a roller 3 which can be rotated at a peripheral speed of 800-1600 m/min is followed by an air-cushioned deflection roller 4.
  • a heater 6 can be provided between the deflection roller 4 and the spooler 7.
  • the device 5 for applying a spin finish can be arranged before and/or after the heater 6 .
  • the filaments 2, 2', 2" are drawn off directly from the nozzles of the spinning block 1 by means of the spooler 7 at a speed of 4000 to 6000 m/min and wound onto a number of spools corresponding to the number of filaments.
  • the filaments 2 run , 2', 2" over a part of the rotating surface.
  • the roll 3 itself is not actively cooled.
  • the heat supplied to the roller 3 by the filament 2 is given off to the environment via the comparatively large roller surface.
  • the contact length of the filament 2 is adjusted by means of the deflection roller 4 . Before or after a possible heat treatment by the heater 6, a spin finish is applied to the thread via the device 5.
  • a polyester with a VI of 74 (phenol/dichlorobenzene) was spun as the polymer at extruder temperatures of 275/280/285° C., a melting point of 287 ° C. and a spinning block temperature of 295 ° C.
  • the spinneret characteristics were 2 ⁇ 6/.33/4D and 1 ⁇ 5/.33/4D.
  • the winding speed was 5000 m/min.
  • the peripheral speed of the roll was varied between 800 and 1600 m/min and the distance between spinneret and roll between 60 and 130 cm, depending on the denier.
  • the test parameters and yarn properties are summarized in the following table for 6 dtex Examples 1-6a and 10 dtex Examples 7-14.
  • a particular advantage of the method according to the invention is that fine monofilaments can be produced in a single-stage process at speeds of over 4000 m/min. By varying the roll parameters, monofilaments with high strength, low elongation and low boil-off shrinkage can be produced at high speeds in one step for the first time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

Dans un procédé mono-étape pour la fabrication de monofilaments fins thermoplastiques, le refroidissement est effectué par l'intermédiaire de la surface en rotation d'un cylindre de cuivre à des vitesses d'enroulement allant de 4000 à 6000 m/minute. Un monofilament fabriqué selon ce procédé présente, avec un profil rond, un retrait à l'ébullition < 10 %, un allongement < 40 % et une résistance > 35 cN/dtex.In a single-step process for the manufacture of thin thermoplastic monofilaments, cooling is carried out via the rotating surface of a copper cylinder at winding speeds ranging from 4000 to 6000 m/minute. A monofilament made by this process has, with a round profile, a boiling shrinkage <10%, an elongation <40% and a strength >35 cN/dtex.

Description

Verfahren zur Herstellung von feinen Monofilamenten und Monofilament hergestellt nach diesem Verfahren Method of making fine monofilament and monofilament made by this method
Die Erfindung betrifft ein Verfahren zur Herstellung von thermoplastischen Monofilamenten in einem Titerbereich von 5 - 25 dtex, sowie ein Monofilament hergestellt nach dem Verfahren.The invention relates to a method for producing thermoplastic monofilaments in a titer range of 5-25 dtex, and a monofilament produced by the method.
Feine Monofilaraente bis etwa 33 dtex werden mit Spinnge¬ schwindigkeiten unter 1000 m/min gesponnen, mit Blasluft gekühlt, aufgewickelt und in einem zweiten Arbeitsgang mit etwa 750 m/min separat verstreckt.Fine monofilament yarns up to about 33 dtex are spun at spinning speeds below 1000 m/min, cooled with blown air, wound up and stretched separately in a second operation at about 750 m/min.
Obwohl die Eigenschaften der in bekannter Weise herge¬ stellten Monofile, insbesondere ihre Festigkeit, befrie¬ digend ist, ist das langsame Spinnen und separate Ver- strecken sehr aufwendig. Es besteht schon lange das Be¬ dürfnis die Herstellung der Monofile zu vereinfachen und effizienter zu gestalten.Although the properties of the monofilaments produced in a known manner, in particular their strength, are satisfactory, the slow spinning and separate stretching is very expensive. There has long been a need to simplify the production of monofilaments and make them more efficient.
Aufgabe der Erfindung ist es, ein Verfahren zur Herstel¬ lung von feinen Monofilamenten zur Verfügung zu stellen, das ohne separaten Streckprozess bei hohen Wickelge¬ schwindigkeiten die Eigenschaften von bekannten Monofila- enten erreicht und/oder verbessert. Eine weitere Aufgabe ist es, das Verfahren so zu variie¬ ren, dass gewünschte Eigenschaf en der Monofilamente durch die Einstellparameter der Vorrichtung erzielt wer¬ den können.The object of the invention is to provide a method for the production of fine monofilaments which, without a separate stretching process at high winding speeds, achieves and/or improves the properties of known monofilaments. A further object is to vary the method in such a way that the desired properties of the monofilaments can be achieved through the setting parameters of the device.
Die vorgenannte Aufgabe wird erfindungsgemäss dadurch ge¬ löst, dass die schmelzgesponnenen Filamente über eine luftgekühlte rotierende Walze abgezogen, spinnpräpariert und mit einer Geschwindigkeit von 4000 bis 6000 m/min aufgespult werden.The aforementioned object is achieved according to the invention in that the melt-spun filaments are drawn off over an air-cooled rotating roller, spin-finished and wound up at a speed of 4000 to 6000 m/min.
unter Verwendung der Walze als Kühlelement ist es erst¬ mals möglich, Monofile im beanspruchten Titerbereich bei hohen Geschwindigkeiten zu spinnen. Es ist ausserdem be¬ sonders vorteilhaft, dass der Prozess einstufig, d.h. ohne zusätzliches Streckwerk durchgeführt werden kann. Das Verfahren ist also sehr unkompliziert und bietet durch entsprechende Variation der Walzenparameter, wie Umfangsgeschwindigkeit, Abstand Spinndüse - Walze und Kühlzeit eine einfache Voraussetzung zur gezielten Be¬ einflussung der Monofileigenschaften.using the roller as a cooling element, it is possible for the first time to spin monofilaments in the claimed titre range at high speeds. It is also particularly advantageous that the process can be carried out in one stage, i.e. without an additional drafting system. The process is therefore very uncomplicated and, by appropriately varying the roll parameters, such as peripheral speed, distance between spinneret and roll and cooling time, offers a simple prerequisite for influencing the monofilament properties in a targeted manner.
Es ist zweckmässig die Umfangsgeschwindigkeit der Kupfer¬ walze von 800 bis 1600 m/min, abhängig vom Titer zu wäh¬ len.It is expedient to choose a peripheral speed of 800 to 1600 m/min for the copper roller, depending on the denier.
Es ist auch zweckmässig, den Abstand zwischen der Spinn¬ düse und der Walze zwischen 60 und 200 cm zu wählen.It is also expedient to choose a distance between the spinneret and the roller of between 60 and 200 cm.
Mittels der Umfangsgeschwindigkeit der Walze und dem Ab¬ stand zwischen Spinndüse und Walze lassen sich zusätzlich die Fadeneigenschaften beeinflussen.The thread properties can also be influenced by means of the peripheral speed of the roller and the distance between the spinneret and the roller.
Es kann zweckmässig sein, die Monofilamente im Bereich zwischen der Walze und dem Spuler thermisch zu behandeln. Die thermische Behandlung erfolgt dann integriert bei 110 - 200°C, insbesondere bei 150 - 170βC, bevorzugt bei 150 - 160°C. Die thermische Behandlung kann besonders bei feinen Monofilen zur Erzielung der erfindungsgemässen Eigenschaften nützlich sein.It can be useful to thermally treat the monofilaments in the area between the roller and the winder. The thermal treatment then takes place in an integrated manner at 110-200.degree. C., in particular at 150-170.degree . C., preferably at 150-160.degree. The thermal treatment can be particularly useful in the case of fine monofilaments in order to achieve the properties according to the invention.
Das Verfahren ist für thermoplastische Monofilamente aus beispielsweise Polyestern, Polyamiden, Polyacryl , Polyvi- nylfluorid, Polyethylen oder Polypropylen geeignet.The method is suitable for thermoplastic monofilaments made from, for example, polyesters, polyamides, polyacrylic, polyvinyl fluoride, polyethylene or polypropylene.
In einer besonders vorteilhaften Ausführung besteht die Walze aus Kupfer, sie kann aber auch aus einem anderen gut wärmeleitfähigem Metall wie beispielsweise Aluminium oder Edelstahl bestehen. Die Walze aus einem gut wärme- leitfähigen Material kann auch Oberflächenbeschichtet sein und kann aktiv gekühlt werden.In a particularly advantageous embodiment, the roller is made of copper, but it can also be made of another metal with good thermal conductivity, such as aluminum or stainless steel. The roller made of a material with good thermal conductivity can also be surface-coated and can be actively cooled.
Das nach dem Verfahren hergestellte Monofilament zeichnet sich durch ein rundes Profil, einen Kochschrumpf <10 %, bevorzugt <6 %, eine Dehnung <40 % und eine Festigkeit von >35 cN/tex aus.The monofilament produced according to the method is characterized by a round profile, a boil-off shrinkage of <10%, preferably <6%, an elongation of <40% and a strength of >35 cN/tex.
Die Anzahl der aus einer Spinndüse herstellbaren Monofile ist für das erfindungsgemässe Verfahren nicht kritisch und lediglich von der Breite der Kühlwalze und der Anord¬ nung der Spuler abhängig.The number of monofilaments that can be produced from a spinneret is not critical for the process according to the invention and is only dependent on the width of the cooling roller and the arrangement of the spools.
Die Erfindung soll anhand einer Zeichnung näher beschrie¬ ben werden.The invention will be described in more detail with reference to a drawing.
Die einzige Figur zeigt eine schematische Darstellung des Verfahrens.The only figure shows a schematic representation of the process.
In der Figur ist mit 1 ein Spinnblock dargestellt. Fila- mente sind mit 2, 2'und 2" bezeichnet. Einer mit 800 - 1600 m/min Umfangsgeschwindigkeit drehbare Walze 3 ist eine luftgelagerte Umlenkrolle 4 nachgeschaltet. Zwischen der Umlenkrolle 4 und dem Spuler 7 kann ein Heizer 6 vor¬ gesehen werden. Die Vorrichtung 5 zum Aufbringen einer Spinnpräparation kann vor oder/und nach dem Heizer 6 an¬ geordnet sein.In the figure, 1 is a spinning block. Fila ments are denoted by 2, 2′ and 2″. A roller 3 which can be rotated at a peripheral speed of 800-1600 m/min is followed by an air-cushioned deflection roller 4. A heater 6 can be provided between the deflection roller 4 and the spooler 7. The device 5 for applying a spin finish can be arranged before and/or after the heater 6 .
Im Betrieb werden die Filamente 2, 2', 2" direkt von den Düsen des Spinnblocks 1 mittels des Spulers 7 mit einer Geschwindigkeit von 4000 bis 6000 m/min abgezogen und auf eine der Filamentzahl entsprechenden Anzahl von Spulen gewickelt. Dabei laufen die Filamente 2, 2', 2" über ei¬ nen Teil der rotierenden Oberfläche. Die Walze 3 selbst ist nicht aktiv gekühlt. Die der Walze 3 vom Filament 2 zugeführte Wärme wird über die vergleichsweise grosse Walzenoberfläche an die Umgebung abgegeben.During operation, the filaments 2, 2', 2" are drawn off directly from the nozzles of the spinning block 1 by means of the spooler 7 at a speed of 4000 to 6000 m/min and wound onto a number of spools corresponding to the number of filaments. The filaments 2 run , 2', 2" over a part of the rotating surface. The roll 3 itself is not actively cooled. The heat supplied to the roller 3 by the filament 2 is given off to the environment via the comparatively large roller surface.
Die Kontaktlänge des Filamentes 2 wird mittels der Um¬ lenkrolle 4 eingestellt. Vor oder nach einer möglichen Wärmebehandlung durch den Heizer 6 wird eine Spinnpräpa¬ ration über die Einrichtung 5 auf den Faden aufgebracht.The contact length of the filament 2 is adjusted by means of the deflection roller 4 . Before or after a possible heat treatment by the heater 6, a spin finish is applied to the thread via the device 5.
Ausführungsbeispieleexemplary embodiments
Als Polymer wurde ein Polyester mit einer VI von 74 (Phe¬ nol/Dichlorbenzol) bei Extrudertemperaturen von 275/280/ 285°C, einer Schmelztemperatur von 287CC und einer Spinn¬ blocktemperatur von 295CC gesponnen. Die Spinndüsencha¬ rakteristik betrug 2 x 6/.33/4D und 1 x 5/.33/4D. Die Wickelgeschwindigkeit betrug 5000 m/min.A polyester with a VI of 74 (phenol/dichlorobenzene) was spun as the polymer at extruder temperatures of 275/280/285° C., a melting point of 287 ° C. and a spinning block temperature of 295 ° C. The spinneret characteristics were 2×6/.33/4D and 1×5/.33/4D. The winding speed was 5000 m/min.
Die Umfangsgeschwindigkeit der Walze wurde bei einer Kon¬ taktlänge von 12 cm zwischen 800 und 1600 m/min und der Abstand zwischen Spinndüse und Walze zwischen 60 und 130 cm, abhängig vom Titer variiert. Die Versuchsparameter und Garneigenschaften sind in der folgenden Tabelle für 6 dtex Beispiele 1 - 6a und 10 dtex Beispiele 7 - 14 zusammengestellt.With a contact length of 12 cm, the peripheral speed of the roll was varied between 800 and 1600 m/min and the distance between spinneret and roll between 60 and 130 cm, depending on the denier. The test parameters and yarn properties are summarized in the following table for 6 dtex Examples 1-6a and 10 dtex Examples 7-14.
In der Tabelle bedeuten:In the table mean:
Vβla = Umfangsgeschwindigkeit der Kupferwalze h = Abstand Spinndüse/Walzenoberfläche KS = Kochschrumpf Dt = Dehnung Ft = FestigkeitV βla = peripheral speed of the copper roller h = distance spinneret/roller surface KS = shrinkage at boil Dt = elongation Ft = strength
6 dtex = 0,24 mm (Beispiel 1 - 6a) 10 dtex = 0,34 mm (Beispiele 7 - 14)6 dtex = 0.24 mm (example 1 - 6a) 10 dtex = 0.34 mm (example 7 - 14)
* mit thermischer Behandlung* with thermal treatment
** Vergleich ohne Walze bei' 5000 m/min mit konventionel¬ ler Luftkühlung hergstelltes Monofil 10 dtex.** Comparison without a roller at 5000 m/min with conventional air cooling of a 10 dtex monofilament.
Ein besonderer Vorteil des erfindungsgemässen Verfahrens liegt darin, dass in einem einstufigen Prozess bei Ge¬ schwindigkeiten über 4000 m/min feine Monofile herge¬ stellt werden können. Durch Variation der Walzenparameter lassen sich erstmals Monofile bei hohen Geschwindigkeiten einstufig mit hoher Festigkeit, tiefer Dehnung und tiefem Kochschrumpf herstellen. A particular advantage of the method according to the invention is that fine monofilaments can be produced in a single-stage process at speeds of over 4000 m/min. By varying the roll parameters, monofilaments with high strength, low elongation and low boil-off shrinkage can be produced at high speeds in one step for the first time.

Claims

[beim Internationalen Büro am 24. August 1990 (24.08.90) eingegangen ursprünglicher Anspruch 5 gestrichen; Anspruch 1 geändert; Ansprüche 6 und 7 umnumeriert; alle weiteren Ansprüche unverändert (1 Seite) ] [Received by the International Bureau on 24 August 1990 (24/08/90) original claim 5 deleted; Claim 1 changed; Claims 6 and 7 renumbered; all other claims unchanged (1 page) ]
1 . Verfahren zur einstufigen Herstel lung von glatten Mo- nofilamenten aus Polyester mit rundem Querschnitt im1 . Process for the one-step production of smooth polyester monofilaments with a round cross-section
10 Titerbereich von 5 - 25 dtex , dadurch gekennzeichnet , dass die schmel zgesponnenen Monof ilamente über eine luftgekühlte rotierende Wal ze ( 3 ) geführt , spinnprä¬ pariert und unmittelbar mit einer Geschwindigkeit von 4000 bis 6000 m/min aufgespult werden .10 titer range of 5-25 dtex, characterized in that the melt-spun monofilaments are guided over an air-cooled rotating roller (3), spin-prepared and immediately wound up at a speed of 4000 to 6000 m/min.
1515
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Walze (3) mit einer Umfangsgeschwindigkeit von 800 bis 1600 m/min rotiert.2. The method according to claim 1, characterized in that the roller (3) rotates at a peripheral speed of 800 to 1600 m/min.
20 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand von der Spinndüse zur Walze zwischen 60 und 200 cm beträgt.20 3. The method according to claim 1, characterized in that the distance from the spinneret to the roll is between 60 and 200 cm.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, 25 dass die Monofilamente im Bereich zwischen der Walze4. The method according to claim 1, characterized in that the monofilaments in the area between the roller
(3) und dem Spuler (7) thermisch behandelt werden.(3) and the winder (7) are thermally treated.
5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Oberfläche der Walze (3) aus Kupfer besteht.5. The method according to claim 1, characterized in that the surface of the roller (3) consists of copper.
3030
Monofilament, hergestellt nach dem Verfahren gemäss den Ansprüchen 1 bis 5 , gekennzeichnet durch ein im wesentlichen rundes Profil, einen Kochschrumpf 10 -:< eine Dehnung <40 k und eine Festigkeit >35 cN/tex. INARTIKEL 19GENANNTEERKLÄRUNGMonofilament produced by the process according to Claims 1 to 5, characterized by an essentially round profile, a boil-off shrinkage of 10 - :< an elongation of <40 k and a strength of >35 cN/tex. STATEMENT REFERRED TO IN ARTICLE 19
Zur Abgrenzung der im internationalen Recherchenbericht ge¬ nannten Druckschriften wurde die Erfindung auf ein Verfahren zur einstufi-gen Herstellung von Polyestermonofilamenten abge¬ stellt. Obwohl Mo-nofilamente immer glatt sind wurde eine prä¬ zisierende ünterschei-dung zu den bekannten gekräuselten Fäden vorgenomme . In order to distinguish between the publications mentioned in the international search report, the invention was based on a process for the one-step production of polyester monofilaments. Although monofilaments are always smooth, a precise distinction was made between them and the known crimped threads.
EP90906103A 1989-05-01 1990-04-26 Process for the production of fine monofilaments Expired - Lifetime EP0423278B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1671/89 1989-05-01
CH167189 1989-05-01
PCT/CH1990/000114 WO1990013688A1 (en) 1989-05-01 1990-04-26 Process for the production of fine monofilaments, and a monofilament produced by this process

Publications (3)

Publication Number Publication Date
EP0423278A1 true EP0423278A1 (en) 1991-04-24
EP0423278B1 EP0423278B1 (en) 1994-07-20
EP0423278B2 EP0423278B2 (en) 1998-04-15

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Family Applications (1)

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EP90906103A Expired - Lifetime EP0423278B2 (en) 1989-05-01 1990-04-26 Process for the production of fine monofilaments

Country Status (3)

Country Link
EP (1) EP0423278B2 (en)
DE (1) DE59006495D1 (en)
WO (1) WO1990013688A1 (en)

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US5633129A (en) * 1989-07-13 1997-05-27 Massachusetts Institute Of Technology Electrophoretic detection and separation of mutant DNA using replaceable polymer matrices
CA3138078C (en) 2007-10-02 2024-02-13 Labrador Diagnostics Llc Modular point-of-care devices and uses thereof

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DE1902213A1 (en) * 1969-01-17 1970-08-06 Hoechst Ag Process for the production of polyamide ruffles
DE2032950A1 (en) * 1970-07-03 1972-01-05 Farbwerke Hoechst AG, vorm. Meister Lucius & Brüning, 6000 Frankfurt Method and device for the production of latently three-dimensionally crimped fibers and threads from linear high polymers
US4425293A (en) * 1982-03-18 1984-01-10 E. I. Du Pont De Nemours And Company Preparation of amorphous ultra-high-speed-spun polyethylene terephthalate yarn for texturing
ES2019285B3 (en) * 1985-11-25 1991-06-16 Schweizerische Viscose METHOD AND DEVICE FOR BRAIDING POLYESTER THREADS
US4687610A (en) * 1986-04-30 1987-08-18 E. I. Du Pont De Neumours And Company Low crystallinity polyester yarn produced at ultra high spinning speeds
DE3623748A1 (en) * 1986-07-14 1988-02-18 Groebe Anneliese Dr High speed spun polyethylene terephthalate filaments having a novel property profile, production thereof and use thereof
EP0372014B1 (en) * 1988-02-26 1994-04-20 Rhone-Poulenc Viscosuisse Sa Process and device for manufacturing highly oriented amorphous polyester filament yarns

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Title
See references of WO9013688A1 *

Also Published As

Publication number Publication date
WO1990013688A1 (en) 1990-11-15
EP0423278B2 (en) 1998-04-15
DE59006495D1 (en) 1994-08-25
EP0423278B1 (en) 1994-07-20

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