EP0663966B2 - Monofilaments with improved weavability and their use - Google Patents

Monofilaments with improved weavability and their use Download PDF

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Publication number
EP0663966B2
EP0663966B2 EP94920865A EP94920865A EP0663966B2 EP 0663966 B2 EP0663966 B2 EP 0663966B2 EP 94920865 A EP94920865 A EP 94920865A EP 94920865 A EP94920865 A EP 94920865A EP 0663966 B2 EP0663966 B2 EP 0663966B2
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monofilament
monofilaments
thread
polyester
pet
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German (de)
French (fr)
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EP0663966A1 (en
EP0663966B1 (en
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Halim Baris
Etienne Fleury
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ExNex AG
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Rhodia Industrial Yarns AG
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    • 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

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  • the invention relates to a monofilament with a diameter of 0.01 to ⁇ 0.1 mm, made of a copolyester Polyethylene terephthalate / polydialkylsiloxane, the polyethylene terephthalate content of which is at least 85% by weight, for the production of fabrics and for the use of these fabrics.
  • Fine monofilaments are to be understood here as monofilaments whose diameters range from 0.01 to ⁇ 0.1 mm.
  • the object of the invention is to improve the weavability of fine polyester monofilaments in warp and weft, to produce no peeling, splices and no abrasion during weaving and the running times for Extend weaving by reducing cleaning effort.
  • the monofilament has a maximum tensile strength or elongation at break of ⁇ 30%, a strength of at least 45 cN / tex and at the same time an elastic modulus at 5% Has an elongation of> 500 cN / tex.
  • copolyesters are included in the polyester chain built-in comonomers made of functionalized polysiloxanes, the weavability of the monofilaments with a Significantly improve diameters from 0.01 to ⁇ 0.1 mm. There are no visible peeling on fine Monofilament between 0.01 and ⁇ 0.1 mm in diameter. This means that the previously frequent cleaning cycles can be carried out in the weaving mill extend significantly. There are no blockages in the tissue openings.
  • copolyesters are used which are already in the production be modified with functionalized polydialkylsiloxanes and which preferably contain about 0.5% by weight of silicon in the finished thread.
  • Polysiloxanes of the type used as the starting material for the Use according to the invention are known from EP-A-0 269 023.
  • the well-known chemically modified Polymers are used to manufacture matrix fibers, but are in their present form for precision fabrics unsuitable for filter media, screen printing.
  • JP-A-50090715 describes a mixture (blend) of a polyester with a polysiloxane for the production of Multifilaments known.
  • the monofilament has a residual tensile strength of> 85%. based on the knot-free Monofilament with a maximum tensile strength extension of 15%. With this combination, the knot strength of the monofilament significantly improved.
  • the Si content is 0.05 to 2.0% by weight, in particular 0.05 to 1.5, preferably 0.05 to 1.0 % By weight, based on the weight of the monofilament.
  • test device under web-like conditions was used to determine the abrasion and the peeling used.
  • the abrasion of the polyester monofilament modified according to the invention is on the reed from the test device used although still very poorly visible, it is no longer weighable. It is particularly advantageous that the Manufacturing a fabric on a loom does not necessarily mean cleaning the reeds in the meantime is necessary or that the cleaning cycle is extended. This also makes the quality of the fabric significant improved.
  • polyester / polydialkylsiloxane monofilaments according to the invention is particularly useful for the production of fabrics for filter media, sieves and those suitable for screen printing.
  • 13f1 was chosen as the model titer and the copolyester made of polyethylene terephthalate (PET) and polydimethylsiloxane (PDMS) as the polymer. This corresponds to a diameter of 0.034 mm for all (PET) / (PDMS) monofilaments.
  • the spinning conditions for all examples are: melt temperature 290 ° C winding speed 600 m / min Polymer throughput 23 g / min or 27 g / min
  • the monofilaments were further stretched on a stretching machine to the maximum tensile strength of 28 +/- 2% or 20 +/- 2% single-stage stretched at 200 ° C at 100 m / min.
  • FIG. 2 shows the result of a weaving test in the form of photographic recordings of the weaving leaf used again.
  • the threads with positions 1-4 are according to the invention and show very little abrasion and peeling; the threads according to items 5-10 are comparative tests without PDMS and show considerable abrasion or Peels on the reed of the test machine. It follows that the monofilament according to the invention shows significantly improved weavability and longer working cycles.
  • the determination of the coefficient of friction is based on the rope friction equation.
  • the measurement of the coefficient of friction was carried out using a device from Rothschild Mess Instrumente, Zurich, for 2 minutes.
  • the determination of the coefficient of friction "ceramic / thread", the ceramic pin has a diameter of 20 mm and a Roughness of 0.45.
  • the monofilament made of PET / PDMS is about 10% lower friction coefficient in both In the case of thread / thread as well as in the case of ceramic / thread.
  • the monofilament according to the invention shows a significantly lower fibrillation.
  • the claimed monofilaments made of PET / PDMS are also less stiff than known monofilaments. According to the invention, the peeling of homogeneous polyester monofilaments with a diameter ⁇ 0.1 mm and a residual elongation ⁇ 30% has been successfully eliminated for the first time.

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  • 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)

Description

Die Erfindung betrifft ein Monofilament mit einem Durchmesser von 0.01 bis < 0,1 mm, aus einem Copolyester aus Polyethylenterephthalat/Polydialkylsiloxan, dessen Polyethylenterephthalat-Anteil wenigstens 85 Gew.-% aufweist, zur Herstellung von Geweben, sowie zur Verwendung dieser Gewebe.The invention relates to a monofilament with a diameter of 0.01 to <0.1 mm, made of a copolyester Polyethylene terephthalate / polydialkylsiloxane, the polyethylene terephthalate content of which is at least 85% by weight, for the production of fabrics and for the use of these fabrics.

Beim Weben von dichten Geweben aus feinen Monofilamenten aus Polyester treten häufig Abschälungen und Abspleissungen von der Oberfläche des Monofilaments auf. Die Abschälrückstände lagern sich auf den Webblättern ab. Hierdurch wird ein Verweben oft unmöglich oder der Reinigungszyklus der Webmaschine wird zu kurz. Wegen Abschälungen tritt auch eine Verschlechterung der Gewebequalität, insbesondere durch Verstopfung der Gewebeöffnungen auf. Das Phänomen ist in der schlechten Scheuerbeständigkeit von Polyesterfäden gegenüber beispielsweise Polyamidfäden begründet.When weaving dense fabrics made of fine polyester monofilaments, peeling and Splices from the surface of the monofilament. The peeling residues are stored on the reeds from. This often makes weaving impossible or the cleaning cycle of the weaving machine too short. Because of Peeling also occurs a deterioration in tissue quality, especially due to blockage of the tissue openings on. The phenomenon is in the poor abrasion resistance of polyester threads, for example Polyamide threads justified.

Unter feinen Monofilamenten sind hier solche Monofile zu verstehen, deren Durchmesser im Bereich von 0,01 bis < 0,1 mm liegen.Fine monofilaments are to be understood here as monofilaments whose diameters range from 0.01 to <0.1 mm.

Es hat nicht an Versuchen gefehlt, die Webbarkeit von feinen Monofilamenten aus Polyester zu verbessern. Den Nachteil der unzureichenden Webbarkeit hat man zum Beispiel durch Herstellen eines Kern/Mantel-Fadens mit einem Mantel aus Polyamid zu umgehen versucht. Diese Lösung verlangt jedoch einen erhöhten Aufwand bei der Monofilherstellung und ist somit nicht wirtschaftlich.There has been no shortage of attempts to improve the weavability of fine polyester monofilaments. The The disadvantage of inadequate weavability is, for example, by producing a core / sheath thread with a Tried to bypass polyamide coat. However, this solution requires an increased effort in the monofilament production and is therefore not economical.

Es sind aber auch Monofilamente mit feinem Durchmesser bekannt, sogenannte Bikomponentfäden, deren Kern aus einem anderen Copolyester besteht als der Mantel (EP-A-0 399 053). Hier ist es gelungen, durch chemische Modifikation des Mantels relativ feine Polyestermonofilamente herzustellen, welche nahezu abriebfrei webbar sind. Aber auch hier gilt, wie oben beschrieben, der höhere Arbeitsaufwand bei der Herstellung von Kern/Mantel-Fäden als nachteilig.However, fine-diameter monofilaments are also known, so-called bicomponent threads, the core of which consists of a different copolyester than the jacket (EP-A-0 399 053). Here it has succeeded through chemical Modification of the jacket to produce relatively fine polyester monofilaments, which can be woven almost without abrasion. However, as described above, the higher workload in the production of core / sheath threads also applies here disadvantageous.

Es ist auch bekannt (EP-A-0 269 023), Silikon modifizierte Polyester in Form einer Matrixfaser herzustellen. Die Silikon-Matrix dient dabei als Schutz vor der mechanischen Beanspruchung des Fadens beim Weben und anderen textilen Verfahren. Beschichtungen in allen Formen haben bei feinen Monofilamenten den Nachteil, dass ein Verweben wegen der Abschälungen und verstärkten Fibrillierung unmöglich wird. Bei der Beschichtung von Monofilen handelt es sich aussedem um ein aufwendiges Verfahren.It is also known (EP-A-0 269 023) to produce silicone-modified polyester in the form of a matrix fiber. The Silicone matrix serves as protection against the mechanical stress of the thread during weaving and others textile process. Coatings in all shapes have the disadvantage with fine monofilaments that weaving because of the peeling and increased fibrillation becomes impossible. When it comes to coating monofilaments it is also a complex process.

Aufgabe der Erfindung ist es, die Webbarkeit von feinen Polyester Monofilamenten in Kette und Schuss zu verbessern, beim Weben keine Abschälungen, Abspleissungen und keinen Abrieb zu erzeugen und die Laufzeiten beim Weben durch verminderten Reinigungsaufwand zu verlängern.The object of the invention is to improve the weavability of fine polyester monofilaments in warp and weft, to produce no peeling, splices and no abrasion during weaving and the running times for Extend weaving by reducing cleaning effort.

Die Aufgabe wird mit den Merkmalen von Anspruch 1 gelöst, wobei das Monofilament eine Höchstzugkraftdehnung oder Bruchdehnung von < 30 %, eine Festigkeit von wenigstens 45 cN/tex und gleichzeitig einen E-Modul bei 5% Dehnung von > 500 cN/tex aufweist. Es hat sich in überraschender Weise gezeigt, dass Copolyester mit in die Polyesterkette eingebauten Comonomeren aus funktionalisierten Polysiloxanen die Webbarkeit der Monofilamente mit einem Durchmesser von 0.01 bis < 0.1 mm erheblich verbessern. Es treten keine sichtbaren Abschälungen bei feinen Monofilen zwischen 0.01 und < 0.1 mm Durchmesser auf. Somit lassen sich in der Weberei die bisher häufigen Reinigungszyklen deutlich verlängern. Es treten keine Verstopfungen der Gewebeöffnungen auf.The object is achieved with the features of claim 1, wherein the monofilament has a maximum tensile strength or elongation at break of <30%, a strength of at least 45 cN / tex and at the same time an elastic modulus at 5% Has an elongation of> 500 cN / tex. It has surprisingly been found that copolyesters are included in the polyester chain built-in comonomers made of functionalized polysiloxanes, the weavability of the monofilaments with a Significantly improve diameters from 0.01 to <0.1 mm. There are no visible peeling on fine Monofilament between 0.01 and <0.1 mm in diameter. This means that the previously frequent cleaning cycles can be carried out in the weaving mill extend significantly. There are no blockages in the tissue openings.

Erfindungsgemäß werden Copolyester eingesetzt, welche bereits bei der Herstellung mit funktionalisierten Polydialkylsiloxanen modifiziert werden und die im fertigen Faden vorzugsweise etwa 0.5 Gew.-% Silizium enthalten. Polysiloxane der Art, die als Ausgangsmaterial für den erfindungsgemässen Einsatz vorgesehen sind, sind aus der EP-A-0 269 023 bekannt. Die bekannten chemisch modifizierten Polymere dienen zur Herstellung Matrixfasern, sind jedoch in der vorliegenden Form für Präzisionsgewebe für Filtermittel, Siebdruck ungeeignet.According to the invention, copolyesters are used which are already in the production be modified with functionalized polydialkylsiloxanes and which preferably contain about 0.5% by weight of silicon in the finished thread. Polysiloxanes of the type used as the starting material for the Use according to the invention are known from EP-A-0 269 023. The well-known chemically modified Polymers are used to manufacture matrix fibers, but are in their present form for precision fabrics unsuitable for filter media, screen printing.

Aus der JP-A-50090715 ist eine Mischung (Blend) aus einem Polyester mit einem Polysiloxan zur Herstellung von Multifilamenten bekannt.JP-A-50090715 describes a mixture (blend) of a polyester with a polysiloxane for the production of Multifilaments known.

Es ist besonders zweckmässig, wenn der Reibungskoeffizient "Faden/Faden" µ < 0,30 und der Reibungskoeffizient "Keramik/Faden" µ < 0,50 beträgt. Das hat den Vorteil einer verbesserten Webbarkeit des Monofilaments auf den handelsüblichen Webmaschinen.It is particularly useful if the friction coefficient "thread / thread" µ <0.30 and the friction coefficient "Ceramic / thread" µ is <0.50. This has the advantage of improved weave of the monofilament on the commercial weaving machines.

Es ist auch zweckmässig, wenn das Monofilament eine Restreisskraft von > 85 %. bezogen auf das knotenfreie Monofil bei einer Höchstzugkraftdehnung von 15%, aufweist. Bei dieser Kombination wir die Knotenfestigkeit des Monofils erheblich verbessert.It is also appropriate if the monofilament has a residual tensile strength of> 85%. based on the knot-free Monofilament with a maximum tensile strength extension of 15%. With this combination, the knot strength of the monofilament significantly improved.

Es ist zweckmässig, wenn der Si-Gehalt 0,05 bis 2,0 Gew.-%, insbesondere 0,05 bis 1,5, bevorzugt 0,05 bis 1,0 Gew.-%, bezogen auf das Gewicht des Monofilaments beträgt.It is expedient if the Si content is 0.05 to 2.0% by weight, in particular 0.05 to 1.5, preferably 0.05 to 1.0 % By weight, based on the weight of the monofilament.

Zur Bestimmung des Abriebs und der Abschälungen wurde eine Testvorrichtung unter webähnlichen Bedingungen eingesetzt.A test device under web-like conditions was used to determine the abrasion and the peeling used.

Der Abrieb des erfindungsgemäss modifizierten Polyestermonofils ist auf dem Webblatt von der eingesetzten Testvorrichtung zwar noch sehr schwach sichtbar, ist jedoch nicht mehr wägbar. Es ist besonders vorteilhaft, dass bei der Herstellung eines Gewebes auf einer Webmaschine eine zwischenzeitliche Reinigung der Webblätter nicht unbedingt erforderlich ist, bzw. dass der Reinigungszyklus verlängert ist. Dadurch wird auch die Qualität der Gewebe erheblich verbessert.The abrasion of the polyester monofilament modified according to the invention is on the reed from the test device used although still very poorly visible, it is no longer weighable. It is particularly advantageous that the Manufacturing a fabric on a loom does not necessarily mean cleaning the reeds in the meantime is necessary or that the cleaning cycle is extended. This also makes the quality of the fabric significant improved.

Die Verwendung der erfindungsgemässen Polyester/Polydialkylsiloxan-Monofilamente ist besonders zur Herstellung von Geweben für Filtermittel, Siebe und solche für den Siebdruck geeignet.The use of the polyester / polydialkylsiloxane monofilaments according to the invention is particularly useful for the production of fabrics for filter media, sieves and those suitable for screen printing.

Die Erfindung soll anhand eines Beispiels näher beschrieben werden.The invention will be described in more detail using an example.

Als Modelltiter wurde 13f1 gewählt und als Polymer der Copolyester aus Polyethylenterephthalat (PET) und Polydimethylsiloxan (PDMS). Dies entspricht bei allen (PET)/(PDMS)-Monofilamenten einem Durchmesser von 0,034 mm. Die Spinnbedingungen sind bei allen Beispielen: Schmelzetemperatur 290°C Wickelgeschwindigkeit 600 m/min Polymerdurchsatz 23 g/min bzw. 27 g/min 13f1 was chosen as the model titer and the copolyester made of polyethylene terephthalate (PET) and polydimethylsiloxane (PDMS) as the polymer. This corresponds to a diameter of 0.034 mm for all (PET) / (PDMS) monofilaments. The spinning conditions for all examples are: melt temperature 290 ° C winding speed 600 m / min Polymer throughput 23 g / min or 27 g / min

Die Monofilamente wurden weiter auf einer Streckanlage auf die Höchstzugkraftdehnung von 28 +/-2 % bzw. 20 +/-2 % einstufig bei 200°C mit 100 m/min verstreckt.The monofilaments were further stretched on a stretching machine to the maximum tensile strength of 28 +/- 2% or 20 +/- 2% single-stage stretched at 200 ° C at 100 m / min.

Die wichtigsten Fadeneigenschaften sind in Tabelle I zusammengefasst: Polymer Dehnung [%] Festigkeit [cN/tex] Modul bei 5 % Dehnung[cN/tex] PET 27 55 695 PET 19 62 860 PET/PDMS 29 56 685 PET/PDMS 19 59 840 The most important thread properties are summarized in Table I: polymer Strain [%] Strength [cN / tex] Modulus at 5% elongation [cN / tex] PET 27 55 695 PET 19 62 860 PET / PDMS 29 56 685 PET / PDMS 19 59 840

Die Erfindung soll anhand einer Zeichnung näher beschrieben werden. Es zeigen:

Fig. 1
das K/D-Diagramm Polyester gegen Polyester/PDMS
Fig. 2
eine photographische Aufnahme von einem Webblatt der Testvorrichtung (nach dem Test)
The invention will be described in more detail with reference to a drawing. Show it:
Fig. 1
the K / D diagram polyester versus polyester / PDMS
Fig. 2
a photograph of a reed of the test device (after the test)

Es werden, wie aus dem K/D-Diagramm der Fig. 1 ersichtlich, mit Polyester/Polydimethylsiloxan 2,2' etwa die gleichen mechanischen Eigenschaften bei einer bestimmten Restdehnung, verglichen mit reinem Polyethylenterephthalat 1,1' erhalten. Alle verstreckten Fäden wiesen Kochschrumpfwerte von 5-6% auf.As can be seen from the K / D diagram of FIG. 1, approximately with polyester / polydimethylsiloxane 2.2 ' same mechanical properties with a certain residual elongation compared to pure polyethylene terephthalate 1.1 'received. All of the drawn threads had a shrinkage value of 5-6%.

Figur 2 gibt das Ergebnis eines Webtests in Form von photographischen Aufnahmen des eingesetzten Webblatts wieder. Die Fäden mit den Positionen 1-4 sind erfindungsgemäss und zeigen sehr wenig Abrieb und Abschälungen; die Fäden gemäss den Positionen 5-10 sind Vergleichsversuche ohne PDMS und zeigen erheblichen Abrieb bzw Abschälungen auf dem Webblatt der Testmaschine. Es geht daraus hervor, dass das erfindungsgemässe Monofilament eine wesentlich verbesserte Webbarkeit und längere Arbeitszyklen zeigt.FIG. 2 shows the result of a weaving test in the form of photographic recordings of the weaving leaf used again. The threads with positions 1-4 are according to the invention and show very little abrasion and peeling; the threads according to items 5-10 are comparative tests without PDMS and show considerable abrasion or Peels on the reed of the test machine. It follows that the monofilament according to the invention shows significantly improved weavability and longer working cycles.

Die Bestimmung des Reibungskoeffizienten beruht auf der Seilreibungsgleichung. Die Messung des Reibungskoeffizienten erfolgte mit einem Gerät der Firma Rothschild Messinstrumente, Zürich, während 2 Minuten. Die Bestimmung des Reibungskoeffizienten "Keramik/Faden" weist der Keramikstift einen Durchmesser von 20 mm und eine Rauhigkeit von 0,45 auf.The determination of the coefficient of friction is based on the rope friction equation. The measurement of the coefficient of friction was carried out using a device from Rothschild Mess Instrumente, Zurich, for 2 minutes. The determination of the coefficient of friction "ceramic / thread", the ceramic pin has a diameter of 20 mm and a Roughness of 0.45.

Folgende Tabelle II zeigt die Reibungskoeffizienten "Faden/Faden" sowie "Keramik/Faden" Polyester im Vergleich zu Polyester/PDMS. Polymer µF/F µK/F PET 0.33 0.53 PET/PDMS 0.29 0.48 The following Table II shows the friction coefficients "thread / thread" and "ceramic / thread" polyester compared to polyester / PDMS. polymer µ F / F µ K / F PET 00:33 00:53 PET / PDMS 00:29 00:48

Überraschend ist, dass das Monofilament aus PET/PDMS um etwa 10% tiefere Reibungskoeffizienten sowohl im Fall Faden/Faden als auch im Fall Keramik/Faden aufweist.It is surprising that the monofilament made of PET / PDMS is about 10% lower friction coefficient in both In the case of thread / thread as well as in the case of ceramic / thread.

Folgende Tabelle III zeigt die Knoten-"Restreisskraft" Polyester im Vergleich zu Polyester/PDMS ausgedrückt in Prozenten. Polymer Dt= 28 % Dt= 18 % PET 90 81 PET/PDMS 91 89 Dt = Dehnung The following Table III shows the knot "residual tensile strength" polyester compared to polyester / PDMS expressed in percent. polymer Dt = 28% Dt = 18% PET 90 81 PET / PDMS 91 89 Dt = elongation

Obwohl bei der Variante mit Dt=28% kein wesentlicher Unterschied festzustellen war, zeigt die Variante PET/PDMS mit Dt=18% überraschend einen geringeren Reisskraftverlust.Although there was no significant difference in the variant with Dt = 28%, the variant shows PET / PDMS with Dt = 18% surprisingly less loss of tensile strength.

Zur weiteren Bestimmung der Webbarkeit wurde folgende selbst entwickelte Methode (Fibrillationstest) angewendet:The following self-developed method (fibrillation test) was used to further determine the weavability:

Prinzip der TestmethodePrinciple of the test method

Zur Bestimmung der Fibrillation von Monofilamenten für Siebgewebe wird ein Bündel von gleichen Monofilamenten mit einer Frequenz von 2000 bis 3200 U/min während 10 Minuten gegen einen genormten Festkörper geschlagen. In der Tabelle IV sind die Resultate des Fibrillationstests zusammengefasst, wobei die Benotung folgende Bedeutung hat:A bundle of the same monofilaments is used to determine the fibrillation of monofilaments for screen fabrics struck against a standardized solid at a frequency of 2000 to 3200 rpm for 10 minutes. In Table IV summarizes the results of the fibrillation test, with the following meaning:

Benotung der FibrillationGrading of fibrillation

0.0 - 0.50.0 - 0.5 gar keine bzw. sehr schwache Fibrillationno or very weak fibrillation 0.5 - 1.50.5 - 1.5 schwache Fibrillationweak fibrillation 1.5 - 3.51.5 - 3.5 mittelstarke bis starke Fibrillationmedium to strong fibrillation 3.5 - 4.53.5 - 4.5 sehr starke Fibrillationvery strong fibrillation > 4.5> 4.5 sehr starke Beschädigungvery severe damage

Die Fibrillationstestresultate sind in der folgenden Tabelle zusammengefasst. Polymer Restdehnung= 28 % Restdehnung= 20 % 2000/10 2000/15 2000/10 2000/15 PET 1.0 1.5 1.3 2.2 PET/DMS 0.0 0.1 0.3 0.4 The fibrillation test results are summarized in the following table. polymer Elongation = 28% Elongation = 20% 2000/10 2000/15 2000/10 2000/15 PET 1.0 1.5 1.3 2.2 PET / DMS 0.0 0.1 0.3 0.4

Es bedeutet 2000/10: 2000 Umdrehungen/min, 10 Minuten lang.
Es geht daraus hervor, dass das erfindungsgemässe Monofilament eine wesentlich geringere Fibrillation zeigt. Die beanspruchten Monofilamente aus PET/PDMS sind auserdem weniger steif als bekannte Monofilamente. Nach der Erfindung ist es erstmals gelungen, die Abschälungen von homogenen Polyester-Monofilamenten mit einem Durchmesser < 0.1 mm und einer Restdehnung < 30% zu eliminieren.It means 2000/10: 2000 rpm, for 10 minutes.
It can be seen from this that the monofilament according to the invention shows a significantly lower fibrillation. The claimed monofilaments made of PET / PDMS are also less stiff than known monofilaments. According to the invention, the peeling of homogeneous polyester monofilaments with a diameter <0.1 mm and a residual elongation <30% has been successfully eliminated for the first time.

Claims (5)

  1. Monofilament with a diameter 0.01 - < 0.1 mm formed of a copolyester of polyethylene terephthalate/polydialkyl siloxane, in which the proportion of polyethylene terephthalate is at least 85% by weight, for the production of woven fabrics, wherein the monofilament has an elongation at break < 30%, a tenacity of at least 45 cN/tex and, simultaneously a modulus of elasticity at 5% extension > 500 cN/tex.
  2. Monofilament according to claim 1, characterized by a thread-thread coefficient of friction µ < 0.30 and a ceramic-thread coefficient of friction µ < 0.50.
  3. Monofilament according to claim 1, characterized by a residual tensile strength > 85% with reference to the knot-free monofilament at an extension of 18%.
  4. Monofilament according to claim 1, characterized by an Si content of 0.05 to 2.0% by weight with reference to the weight of the monofilament.
  5. Use of the monofilaments with a diameter of 0.01 - < 0.1 mm formed of a copolyester of polyethylene terephthalate/polydialkyl siloxane for non-peeling and abrasion-free manufacture of densely woven precision fabrics for filter media, sieves and screens for silk screening
EP94920865A 1993-08-06 1994-07-27 Monofilaments with improved weavability and their use Expired - Lifetime EP0663966B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH235593 1993-08-06
CH235593 1993-08-06
CH2355/93 1993-08-06
PCT/CH1994/000156 WO1995004847A1 (en) 1993-08-06 1994-07-27 Monofilaments with improved weavability and use of the fabrics produced therewith

Publications (3)

Publication Number Publication Date
EP0663966A1 EP0663966A1 (en) 1995-07-26
EP0663966B1 EP0663966B1 (en) 1999-01-13
EP0663966B2 true EP0663966B2 (en) 2002-05-02

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EP94920865A Expired - Lifetime EP0663966B2 (en) 1993-08-06 1994-07-27 Monofilaments with improved weavability and their use

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EP (1) EP0663966B2 (en)
JP (1) JP3249527B2 (en)
DE (1) DE59407653D1 (en)
ES (1) ES2129651T5 (en)
WO (1) WO1995004847A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995001471A1 (en) † 1993-07-02 1995-01-12 Rhone-Poulenc Viscosuisse S.A. Process for producing soil-repellent and abrasion-resistant monofilaments and their use

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5090715A (en) * 1973-12-20 1975-07-21
JPS6081312A (en) * 1983-10-05 1985-05-09 Toray Monofilament Co Ltd Polyester monofilament for fishery
JPH0643644B2 (en) * 1983-10-05 1994-06-08 東レ・モノフィラメント株式会社 Antifouling polyester monofilament
JPS60194118A (en) * 1984-03-12 1985-10-02 Unitika Ltd Polyester monofilament
US4758637A (en) * 1985-09-11 1988-07-19 Union Carbide Corporation Silicone-modified polyester resin and silicone-sheathed polyester fibers made therefrom
FR2688509A1 (en) * 1992-03-13 1993-09-17 Rhone Poulenc Fibres POLYESTER / POLYDIORGANOSILOXANE COPOLYMER, COMPOSITION CONTAINING THE POLYMER, AND PROCESSES FOR PRODUCING THE COPOLYMER AND THE COMPOSITION

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995001471A1 (en) † 1993-07-02 1995-01-12 Rhone-Poulenc Viscosuisse S.A. Process for producing soil-repellent and abrasion-resistant monofilaments and their use

Also Published As

Publication number Publication date
WO1995004847A1 (en) 1995-02-16
JP3249527B2 (en) 2002-01-21
DE59407653D1 (en) 1999-02-25
EP0663966A1 (en) 1995-07-26
EP0663966B1 (en) 1999-01-13
ES2129651T5 (en) 2002-11-16
ES2129651T3 (en) 1999-06-16
JPH08503273A (en) 1996-04-09

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