EP0423278B2 - Process for the production of fine monofilaments - Google Patents
Process for the production of fine monofilaments Download PDFInfo
- Publication number
- EP0423278B2 EP0423278B2 EP90906103A EP90906103A EP0423278B2 EP 0423278 B2 EP0423278 B2 EP 0423278B2 EP 90906103 A EP90906103 A EP 90906103A EP 90906103 A EP90906103 A EP 90906103A EP 0423278 B2 EP0423278 B2 EP 0423278B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- monofilaments
- roller
- roll
- dtex
- 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.)
- Expired - Lifetime
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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
- D01D5/08—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 monofilaments from polyester with a round Cross section in a titer range of 5 - 25 dtex.
- the filaments according to US-A-3,832,435 are crimped multifilaments. in the Procedure requires two cylinders. A larger cylinder is a much smaller cylinder downstream. The first cylinder is used to cool the filaments, the second cylinder runs with one different speed than the first and serves to stretch the filaments. The speed of circulation of the first cylinder is a maximum of 470 m / min, that of the stretching roller is a maximum of 1000 m / min, GB-A-12 68 302 describes a process for producing crimped polyamide multifilaments described. In it, cooled godet pairs are provided, with which the multifilaments in one Stretched and then wound up. According to the known method Speeds limited to 1250 m / min.
- Fine monofilaments up to about 33 dtex are spun at spinning speeds below 1000 m / min, cooled with blown air, wound up and separated in a second operation at about 750 m / min stretched.
- the object of the invention is to provide a method for producing fine monofilaments to provide the properties of. without separate stretching process at high winding speeds known monofilaments achieved and / or improved.
- Another object is to vary the process so that desired properties of the Monofilaments can be achieved through the setting parameters of the device.
- the aforementioned object is achieved in that the melt-spun Filaments passed over a single air-cooled rotating roller, prepared for spinning and directly with a Speed of 4000 to 6000 m / min can be wound up, the monofilaments over the with a Circumferential speed of 1000 to 1600 m / min rotating roller.
- roller as a cooling element, it is possible for the first time to load monofilaments Spin titer range at high speeds. It is also particularly advantageous that the Single-stage process, i.e. can be carried out without additional drafting equipment. So the process is very uncomplicated and offers appropriate variation of the roller parameters, such as peripheral speed, Distance from the spinneret roller and cooling time are a simple prerequisite for influencing the Monofilament properties.
- the circumferential speed of the copper roller is expediently dependent on 1000 to 1600 m / min to choose from titer.
- the thread properties can also be influenced.
- the thermal treatment then takes place integrated at 110-200 ° C, in particular at 150-170 ° C, preferably at 150-160 ° C.
- the thermal treatment can be achieved especially with fine monofilaments the properties of the invention may be useful.
- the roller consists of copper, but it can also consist of another good thermally conductive metal such as aluminum or stainless steel.
- the Roller made of a good heat conductive material can also be surface coated and can be active be cooled.
- the monofilament produced by the process is characterized by a round profile, a Boiling shrinkage ⁇ 10%, preferably ⁇ 6%, an elongation ⁇ 40% and a strength of> 35 cN / tex.
- the number of monofilaments that can be produced from a spinneret is for the method according to the invention not critical and only depends on the width of the cooling roller and the arrangement of the winder.
- the single figure shows a schematic representation of the method.
- 1 represents a spinning block. Filaments are designated with 2, 2 'and 2 ". One with 800 - 1600 m / min peripheral speed rotatable roller 3 is followed by an air-bearing deflection roller 4. A heater 6 can be provided between the deflection roller 4 and the winder 7. The Device 5 for applying a spin finish can be arranged before or / and after the heater 6 be.
- the filaments 2, 2 ', 2 In operation, the filaments 2, 2 ', 2 "directly from the nozzles of the spinning block 1 by means of the winder 7 drawn off at a speed of 4000 to 6000 m / min and to a number corresponding to the number of filaments Number of coils wound.
- the filaments 2, 2 ', 2 run over part of the rotating Surface.
- the roller 3 itself is not actively cooled. The heat supplied to the roller 3 by the filament 2 is released into the environment via the comparatively large roller surface.
- the contact length of the filament 2 is set by means of the deflection roller 4. Before or after one possible heat treatment by the heater 6 is a spin preparation on the device 5 applied the thread.
- the polymer used was a polyester with a VI of 74 (phenol / dichlorobenzene) at extruder temperatures of 275/280/285 ° C, a melting temperature of 287 ° C and a spinning block temperature of 295 ° C spun.
- the spinneret characteristics were 2 x 6 / .33 / 4D and 1 x 5 / .33 / 4D.
- the winding speed was 5000 m / min.
- the circumferential speed of the roller was between 800 and 1600 m / min and the distance between spinneret and roller between 60 and 130 cm, depending on the titer varies.
- a particular advantage of the method according to the invention is that in a one-stage Process at speeds over 4000 m / min fine monofilaments can be produced.
- the roll parameters can be monofilaments at high speeds in one step with high Create strength, deep stretch and deep cook shrink.
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
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Monofilamenten aus Polyester mit rundem Querschnitt in einem Titerbereich von 5 - 25 dtex.The invention relates to a method for producing monofilaments from polyester with a round Cross section in a titer range of 5 - 25 dtex.
Bei den Filamenten gemäss US-A-3,832,435 handelt es sich um gekräuselte Multifilamente. Im Verfahren sind zwei Zylinder erforderlich. Einem grösseren Zylinder ist ein wesentlich kleinerer Zylinder nachgeschaltet. Der erste Zylinder dient zum Abkühlen der Filamente, der zweite Zylinder läuft mit einer anderen Geschwindigkeit als der erste und dient zum Verstrecken der Filamente. Die Umlaufsgeschwindigkeit des ersten Zylinders beträgt maximal 470 m/min, diejenige der Streckwalze maximal 1000 m/min, In der GB-A-12 68 302 wird ein Verfahren zur Herstellung von gekräuselten Polyamid Multifilamenten beschrieben. Darin sind gekühlte Galettenpaare vorgesehen, mit welchen die Multifilamente in einem Arbeitsgang verstreckt und anschliessend aufgespult werden. Nach dem bekannten Verfahren sind die Geschwindigkeiten auf 1250 m/min limitiert.The filaments according to US-A-3,832,435 are crimped multifilaments. in the Procedure requires two cylinders. A larger cylinder is a much smaller cylinder downstream. The first cylinder is used to cool the filaments, the second cylinder runs with one different speed than the first and serves to stretch the filaments. The speed of circulation of the first cylinder is a maximum of 470 m / min, that of the stretching roller is a maximum of 1000 m / min, GB-A-12 68 302 describes a process for producing crimped polyamide multifilaments described. In it, cooled godet pairs are provided, with which the multifilaments in one Stretched and then wound up. According to the known method Speeds limited to 1250 m / min.
Feine Monofilamente bis etwa 33 dtex werden mit Spinngeschwindigkeiten unter 1000 m/min gesponnen, mit Blasluft gekühlt, aufgewickelt und in einem zweiten Arbeitsgang mit etwa 750 m/min separat verstreckt.Fine monofilaments up to about 33 dtex are spun at spinning speeds below 1000 m / min, cooled with blown air, wound up and separated in a second operation at about 750 m / min stretched.
Obwohl die Eigenschaften der in bekannter Weise hergestellten Monofile, insbesondere ihre Festigkeit, befriedigend ist, ist das langsame Spinnen und separate Verstrecken sehr aufwendig. Es besteht schon lange das Bedürfnis 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, is satisfactory, the slow spinning and separate stretching is very expensive. It already exists long the need to simplify the production of monofilaments and make them more efficient.
Aufgabe der Erfindung ist es, ein Verfahren zur Herstellung von feinen Monofilamenten zur Verfügung zu stellen, das ohne separaten Streckprozess bei hohen Wickelgeschwindigkeiten die Eigenschaften von bekannten Monofilamenten erreicht und/oder verbessert.The object of the invention is to provide a method for producing fine monofilaments to provide the properties of. without separate stretching process at high winding speeds known monofilaments achieved and / or improved.
Eine weitere Aufgabe ist es, das Verfahren so zu variieren, dass gewünschte Eigenschaften der Monofilamente durch die Einstellparameter der Vorrichtung erzielt werden können.Another object is to vary the process so that desired properties of the Monofilaments can be achieved through the setting parameters of the device.
Die vorgenannte Aufgabe wird erfindungsgemäss dadurch gelöst, dass die schmelzgesponnenen Filamente über eine einzelne luftgekühlte rotierende Walze geführt, spinnpräpariert und umittelbar mit einer Geschwindigkeit von 4000 bis 6000 m/min aufgespult werden, wobei die Monofilamente über die mit einer Umfangsgeschwindizkeit von 1000 bis 1600 m/min rotierende Walze geführt werden.According to the invention, the aforementioned object is achieved in that the melt-spun Filaments passed over a single air-cooled rotating roller, prepared for spinning and directly with a Speed of 4000 to 6000 m / min can be wound up, the monofilaments over the with a Circumferential speed of 1000 to 1600 m / min rotating roller.
Unter Verwendung der Walze als Kühlelement ist es erstmals möglich, Monofile in beanspruchten Titerbereich bei hohen Geschwindigkeiten zu spinnen. Es ist ausserdem besonders 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 Beeinflussung der Monofileigenschaften.Using the roller as a cooling element, it is possible for the first time to load monofilaments Spin titer range at high speeds. It is also particularly advantageous that the Single-stage process, i.e. can be carried out without additional drafting equipment. So the process is very uncomplicated and offers appropriate variation of the roller parameters, such as peripheral speed, Distance from the spinneret roller and cooling time are a simple prerequisite for influencing the Monofilament properties.
Es ist zweckmässig die Umfangsgeschwindigkeit der Kupferwalze von 1000 bis 1600 m/min, abhängig von Titer zu wählen.The circumferential speed of the copper roller is expediently dependent on 1000 to 1600 m / min to choose from titer.
Es ist auch zweckmässig, den Abstand zwischen der Spinndüse und der Walze zwischen 60 und 200 cm zu wählen.It is also appropriate to set the distance between the spinneret and the roller between 60 and 200 cm to choose.
Mittels der Umfangsgeschwindigkeit der Walze und dem Abstand zwischen Spinndüse und Walze lassen sich zusätzlich die Fadeneigenschaften beeinflussen.By means of the peripheral speed of the roller and the distance between the spinneret and the roller the thread properties can also be influenced.
Es kann zweckmässig sein, die Monofilamente in Bereich zwischen der Walze und dem Spuler thermisch zu behandeln.It may be appropriate to place the monofilaments in the area between the roller and the winder to be treated thermally.
Die thermische Behandlung erfolgt dann integriert bei 110 - 200°C, insbesondere bei 150 - 170°C, bevorzugt bei 150 - 160°C. Die thermische Behandlung kann besonders bei feinen Monofilen zur Erzielung der erfindungsgemässen Eigenschaften nützlich sein.The thermal treatment then takes place integrated at 110-200 ° C, in particular at 150-170 ° C, preferably at 150-160 ° C. The thermal treatment can be achieved especially with fine monofilaments the properties of the invention may be useful.
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 einen gut wärmeleitfähigen Material kann auch Oberflächenbeschichtet sein und kann aktiv gekühlt werden.In a particularly advantageous embodiment, the roller consists of copper, but it can also consist of another good thermally conductive metal such as aluminum or stainless steel. The Roller made of a good heat conductive material can also be surface coated and can be active be 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 by the process is characterized by a round profile, a Boiling shrinkage <10%, preferably <6%, an elongation <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 Anordnung der Spuler abhängig.The number of monofilaments that can be produced from a spinneret is for the method according to the invention not critical and only depends on the width of the cooling roller and the arrangement of the winder.
Die Erfindung soll anhand einer Zeichnung näher beschrieben werden.The invention will be described in more detail with reference to a drawing.
Die einzige Figur zeigt eine schematische Darstellung des Verfahrens.The single figure shows a schematic representation of the method.
In der Figur ist mit 1 ein Spinnblock dargestellt. Filamente 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 vorgesehen werden. Die
Vorrichtung 5 zum Aufbringen einer Spinnpräparation kann vor oder/und nach dem Heizer 6 angeordnet
sein.In the figure, 1 represents a spinning block. Filaments are designated with 2, 2 'and 2 ". One with
800 - 1600 m / min peripheral speed
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 einen 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.In operation, the
Die Kontaktlänge des Filamentes 2 wird mittels der Umlenkrolle 4 eingestellt. Vor oder nach einer
möglichen Wärmebehandlung durch den Heizer 6 wird eine Spinnpräparation über die Einrichtung 5 auf
den Faden aufgebracht.The contact length of the
Als Polymer wurde ein Polyester mit einer Vl von 74 (Phenol/Dichlorbenzol) bei Extrudertemperaturen von 275/280/285°C, einer Schmelztemperatur von 287°C und einer Spinnblocklemperatur von 295°C gesponnen. Die Spinndüsencharakteristik betrug 2 x 6/.33/4D und 1 x 5/.33/4D. Die Wickelgeschwindigkeit betrug 5000 m/min.The polymer used was a polyester with a VI of 74 (phenol / dichlorobenzene) at extruder temperatures of 275/280/285 ° C, a melting temperature of 287 ° C and a spinning block temperature of 295 ° C spun. The spinneret characteristics were 2 x 6 / .33 / 4D and 1 x 5 / .33 / 4D. The winding speed was 5000 m / min.
Die Umfangsgeschwindigkeit der Walze wurde bei einer Kontaktlänge 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.The circumferential speed of the roller was between 800 and 1600 m / min and the distance between spinneret and roller between 60 and 130 cm, depending on the titer varies.
Die Versuchsparameter und Garneigenschaften sind in der folgenden Tabelle für 6 dtex Beispiele 1 - 6a
und 10 dtex Beispiele 7 - 14 zusammengestellt.
Vcu = Umfangsgeschwindigkeit der Kupferwalze
h = Abstand Spinndüse/Walzenoberfläche
KS = Kochschrumpf
Dt = Dehnung
Ft = Festigkeit
6 dtex = 0,24 mm (Beispiel 1 - 6a)
10 dtex = 0,34 mm (Beispiele 7 - 14)
V cu = peripheral speed of the copper roller
h = distance of spinneret / roller surface
KS = cooking shrink
Dt = elongation
Ft = strength
6 dtex = 0.24 mm (example 1 - 6a)
10 dtex = 0.34 mm (Examples 7 - 14)
Ein besonderer Vorteil des erfindungsgemässen Verfahrens liegt darin, dass in einem einstufigen Prozess bei Geschwindigkeiten über 4000 m/min feine Monofile hergestellt 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 in a one-stage Process at speeds over 4000 m / min fine monofilaments can be produced. By variation For the first time, the roll parameters can be monofilaments at high speeds in one step with high Create strength, deep stretch and deep cook shrink.
Claims (4)
- Method for producing polyester monofilaments with a round crosssection in the titre range from 5-25 dtex, without drawing equipment, characterized in that the meltspun monofilaments are equipment over an individual aircooled rotating roll (3), are spin lubricated and are directly wound up at a velocity of 4000 to 6000 m/min., the monofilaments being guided over a roll (3) rotating at a circumferential velocity of 1000 to 1600 m/min.
- Method according to Claim 1, characterized in that, from the spinning nozzles to the roll (3), the monofilaments pass through a zone whose length is between 60 and 200 cm.
- Method according to Claim 1, characterized in that monofilaments are thermally treated in the region between the roll (3) and the winder (7).
- Method according to Claim 1, characterized in that a roll (3) is used whose surface is made of copper.
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 EP0423278A1 (en) | 1991-04-24 |
| EP0423278B1 EP0423278B1 (en) | 1994-07-20 |
| EP0423278B2 true EP0423278B2 (en) | 1998-04-15 |
Family
ID=4215886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5633129A (en) * | 1989-07-13 | 1997-05-27 | Massachusetts Institute Of Technology | Electrophoretic detection and separation of mutant DNA using replaceable polymer matrices |
| EP3756767B1 (en) | 2007-10-02 | 2024-05-01 | Labrador Diagnostics LLC | Modular point-of-care devices and uses thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE3675343D1 (en) * | 1985-11-25 | 1990-12-06 | Schweizerische Viscose | METHOD AND DEVICE FOR SPINNING DIVIDING POLYESTER FEEDS. |
| 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 |
| DE58907506D1 (en) * | 1988-02-26 | 1994-05-26 | Schweizerische Viscose | METHOD AND DEVICE FOR PRODUCING HIGHLY ORIENTED, AMORPHOUS POLYESTER FILAMENTS. |
-
1990
- 1990-04-26 DE DE59006495T patent/DE59006495D1/en not_active Expired - Fee Related
- 1990-04-26 EP EP90906103A patent/EP0423278B2/en not_active Expired - Lifetime
- 1990-04-26 WO PCT/CH1990/000114 patent/WO1990013688A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| EP0423278B1 (en) | 1994-07-20 |
| DE59006495D1 (en) | 1994-08-25 |
| WO1990013688A1 (en) | 1990-11-15 |
| EP0423278A1 (en) | 1991-04-24 |
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