EP0663966A1 - Monofilaments with improved weavability and use of the fabrics produced therewith - Google Patents

Monofilaments with improved weavability and use of the fabrics produced therewith

Info

Publication number
EP0663966A1
EP0663966A1 EP94920865A EP94920865A EP0663966A1 EP 0663966 A1 EP0663966 A1 EP 0663966A1 EP 94920865 A EP94920865 A EP 94920865A EP 94920865 A EP94920865 A EP 94920865A EP 0663966 A1 EP0663966 A1 EP 0663966A1
Authority
EP
European Patent Office
Prior art keywords
monofilament
monofilaments
thread
elongation
tex
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
EP94920865A
Other languages
German (de)
French (fr)
Other versions
EP0663966B1 (en
EP0663966B2 (en
Inventor
Halim Baris
Etienne Fleury
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.)
ExNex AG
Original Assignee
Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
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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 EP0663966A1 publication Critical patent/EP0663966A1/en
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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
    • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
    • D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters

Definitions

  • the invention relates to a monofilament with a diameter of ⁇ 0.1 mm, from a polyethylene terephthalate / polydialkylsiloxane, the polyethylene terephthalate portion of which has 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 are in the 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, splicing and no abrasion during weaving and to extend the running times during weaving by reducing the cleaning effort.
  • the monofilament has an elongation at break of ⁇ 30%, a strength of at least 45 cN / tex and at the same time an elastic modulus at 5% elongation of> 500 cN / tex.
  • Copolyesters have proven to be particularly suitable, which are modified with functionalized polydialkylsiloxanes either during production in granular form or by addition immediately before extrusion and which contain about 0.5% by weight of silicon in the finished thread.
  • Polysiloxanes of the type which are provided as the starting material for the use according to the invention are known from EP-A-0 269 923.
  • the known chemically modified polymers are used for the production of matrix fibers, but in their present form are unsuitable for precision fabrics for filter media and screen printing.
  • the monofilament has a residual tensile strength of> 85% with an elongation of 18%, based on the knot-free monofilament. With this combination, the knot strength of the monofilament is 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 .
  • a test device under web-like conditions was used to determine the abrasion and the peeling.
  • the abrasion of the polyester monofilament modified according to the invention is still very weakly visible on the reed from the test device used, but is no longer weighable. It is particularly advantageous that in the production of a fabric on a weaving machine an intermediate cleaning of the reeds is not absolutely necessary, or that the cleaning cycle is extended. This also significantly improves the quality of the fabrics.
  • polyester / polydialkylsiloxane monofilaments according to the invention is particularly suitable for the production of fabrics for filter media, screens and those 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:
  • FIG. 2 a photograph of a reed of the test device (after the test)
  • FIG. 2 shows the result of a weaving test in the form of photographic recordings of the weaving leaf used.
  • 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 peeling on the reed of the test machine. It follows from that that 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 coefficient of friction was measured for 2 minutes using a device from Rothschild Mess ⁇ instruments, Zurich.
  • the determination of the coefficient of friction "ceramic / thread" has the ceramic pen a diameter of 20 mm and a roughness of 0.45.
  • the monofilament made of PET / PDMS has about 10% lower coefficients of friction both in the thread / thread case and in the ceramic / thread case.
  • PET 90 PET / PDMS 91 89
  • the monofilament according to the invention shows a significantly lower fibrillation.
  • the monofilaments made from PET / PDMS according to the invention are moreover less stiff than known monofilaments.
  • the process according to the invention has for the first time succeeded in eliminating the peeling of homogeneous polyester monofilaments with a diameter ⁇ 0.1 mm and a residual elongation ⁇ 30%.

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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)

Abstract

Monofilament with a diameter < 0,1 mm produced by the incorporation of a polydialkyl siloxane unit with an Si content in the monofilament of 0.05 to 2.0 % wt., modified in such a way that, after drawing to an elongation at break < 30 %, said monofilament has a strength of at least 45 cN/tex and at the same time a modulus of elasticity at an extension of 5 % > 500 cN/tex and a thread-thread coefficient of friction ν < 0.30 and a ceramic/thread coefficient of friction ν < 0.50. The monofilaments are used for the non-peeling and abrasion-free production of dense precision fabrics for filter media, strainers and screens for serigraphy.

Description

Monofilamente mit verbesserter Webbarkeit. sowie Verwendung der damit hergestellten Gewebe. Monofilaments with improved weavability. and use of the fabric made with it.
Die Erfindung betrifft ein Monofilament mit einem Durchmesser von < 0,1 mm, aus einem Polyethylen- terephthalat/Polydialkylsiloxan, dessen Polyethylen- terephthalat-Anteil wenigstens 85 Gew.-% aufweist, zur Herstellung von Geweben, sowie zur Verwendung dieser Gewebe.The invention relates to a monofilament with a diameter of <0.1 mm, from a polyethylene terephthalate / polydialkylsiloxane, the polyethylene terephthalate portion of which has 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 Abspleissun- gen von der Oberfläche des Monofilaments auf. Die Ab¬ schälrückstände lagern sich auf den Webblättern ab. Hier¬ durch wird ein Verweben oft unmöglich oder der Reini¬ gungszyklus der Webmaschine wird zu kurz. Wegen Abschä- lungen tritt auch eine Verschlechterung der Gewebequali¬ tät, 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 splicing often occur from the surface of the monofilament. The peeling residues are deposited on the reeds. This often makes weaving impossible or the cleaning cycle of the weaving machine becomes too short. Because of peeling, there is also a deterioration in the quality of the tissue, in particular due to the blockage of the tissue openings. The phenomenon is due to the poor abrasion resistance of polyester threads compared to, for example, polyamide threads.
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 are in the 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 Bei- spiel durch Herstellen eines Kern/Mantel-Fadens mit einem Mantel aus Polyamid zu umgehen versucht. Diese Lösung verlangt jedoch einen erhöhten Aufwand bei der Monofil- herstellung und ist somit nicht wirtschaftlich.There has been no shortage of attempts to improve the weavability of fine polyester monofilaments. The disadvantage of insufficient weavability has also been tried to avoid play by producing a core / sheath thread with a sheath made of polyamide. However, this solution requires an increased effort in monofilament production and is therefore not economical.
Es sind aber auch Monofilamente mit feinem Durchmesser bekannt, sogenannte Bikomponentfäden, deren Kern aus ei¬ nem anderen Copolyester besteht als der Mantel (EP-A-0 399 053). Hier ist es gelungen, durch chemische Modifika- tion des Mantels relativ feine Polyestermonofilamente herzustellen, welche nahezu abriebfrei webbar sind. Aber auch hier gilt, wie oben beschrieben, der höhere Arbeits¬ aufwand bei der Herstellung von Kern/Mantel-Fäden als nachteilig.However, there are also known monofilaments with a fine diameter, so-called bicomponent threads, the core of which consists of a copolyester other than the sheath (EP-A-0 399 053). Here it has been possible to produce relatively fine polyester monofilaments by chemical modification of the sheath, which can be woven almost without abrasion. However, as described above, the higher workload in the production of core / sheath threads is also disadvantageous here.
Es ist auch bekannt (EP-A-0 269 023), Silikon modifi¬ zierte Polyester in Form einer Matrixfaser herzustellen. Die Silikon-Matrix dient dabei als Schutz vor der mecha¬ nischen 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 un¬ möglich 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 on the thread during weaving and other textile processes. Coatings in all shapes have the disadvantage with fine monofilaments that weaving becomes impossible due to the peeling and increased fibrillation. The coating of monofilaments is also a complex process.
Aufgabe der Erfindung ist es, die Webbarkeit von feinen Polyester Monofilamenten in Kette und Schuss zu verbes¬ sern, 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, splicing and no abrasion during weaving and to extend the running times during weaving by reducing the cleaning effort.
Die Aufgabe wird erfindungsge äss dadurch gelöst, dass das Monofilament eine Bruchdehnung von < 30 %, eine Fe¬ stigkeit von wenigstens 45 cN/tex und gleichzeitig einen E-Modul bei 5% Dehnung von > 500 cN/tex aufweist.The object is achieved according to the invention in that the monofilament has an elongation at break of <30%, a strength of at least 45 cN / tex and at the same time an elastic modulus at 5% elongation of> 500 cN / tex.
Es hat sich in überraschender Weise gezeigt, dass ge¬ wisse, in die Polyesterkette eingebaute Comonomere aus funktionalisierten Polysiloxanen die Webbarkeit der Mono¬ filamente mit einem Durchmesser < 0.1 mm erheblich ver¬ bessern. Es treten keine sichtbaren Abschälungen bei fei¬ nen Monofilen zwischen 0.01 und 0.1 mm Durchmesser auf. Somit lassen sich in der Weberei die bisher häufigen Rei¬ nigungszyklen deutlich verlängern. Es treten keine Ver¬ stopfungen der Gewebeöffnungen auf.It has surprisingly been found that certain comonomers incorporated into the polyester chain Functionalized polysiloxanes considerably improve the weavability of the monofilaments with a diameter of <0.1 mm. There are no visible peelings with fine monofilaments between 0.01 and 0.1 mm in diameter. In this way, the hitherto frequent cleaning cycles can be significantly extended in the weaving mill. There are no blockages in the tissue openings.
Als besonders geeignet haben sich Copolyester erwiesen, welche entweder bereits bei der Herstellung in Granulat¬ form oder durch Zugabe unmittelbar vor der Extrusion mit funktionalisierten Polydialkylsiloxanen modifiziert wer¬ den und die im fertigen Faden etwa 0.5 Gew.-% Silizium enthalten. Polysiloxane der Art, die als Ausgangsmaterial für den erfindungsgemassen Einsatz vorgesehen sind, sind aus der EP-A-0 269 923 bekannt. Die bekannten chemisch modifizierten Polymere dienen zur Herstellung Matrixfa¬ sern, sind jedoch in der vorliegenden Form für Präzisi¬ onsgewebe für Filtermittel, Siebdruck ungeeignet.Copolyesters have proven to be particularly suitable, which are modified with functionalized polydialkylsiloxanes either during production in granular form or by addition immediately before extrusion and which contain about 0.5% by weight of silicon in the finished thread. Polysiloxanes of the type which are provided as the starting material for the use according to the invention are known from EP-A-0 269 923. The known chemically modified polymers are used for the production of matrix fibers, but in their present form are unsuitable for precision fabrics for filter media and screen printing.
Es ist besonders zweckmässig, wenn der Reibungs¬ koeffizient "Faden/Faden" μ < 0,30 und der Reibungs¬ koeffizient "Keramik/Faden" μ < 0,50 beträgt. Das hat den Vorteil einer verbesserten Webbarkeit des Monofilaments auf den handelsüblichen Webmaschinen.It is particularly expedient if the friction coefficient "thread / thread" is μ <0.30 and the friction coefficient "ceramic / thread" is μ <0.50. This has the advantage of improved weavability of the monofilament on standard weaving machines.
Es ist auch zweckmässig, wenn das Monofilament eine Rest¬ reisskraft von > 85 % bei einer Dehnung von 18 %, bezogen auf das knotenfreie Monofil aufweist. Bei dieser Kombination wir die Knotenfestigkeit des Monofils erheblich verbessert.It is also expedient if the monofilament has a residual tensile strength of> 85% with an elongation of 18%, based on the knot-free monofilament. With this combination, the knot strength of the monofilament is 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. Zur Bestimmung des Abriebs und der Abschälungen wurde eine Testvorrichtung unter webähnlichen Bedingungen eingesetzt.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 . A test device under web-like conditions was used to determine the abrasion and the peeling.
Der Abrieb des erfindungsgemass modifizierten Polyester- monofils 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 still very weakly visible on the reed from the test device used, but is no longer weighable. It is particularly advantageous that in the production of a fabric on a weaving machine an intermediate cleaning of the reeds is not absolutely necessary, or that the cleaning cycle is extended. This also significantly improves the quality of the fabrics.
Die Verwendung der erfindungsgemassen Polyester/Polydi- alkylsiloxan-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 suitable for the production of fabrics for filter media, screens and those 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: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:
Schmelzetemperatur : 290°CMelting temperature: 290 ° C
Wickelgeschwindigkeit: 600 m/minWinding speed: 600 m / min
Polymerdurchsatz : 23 g/min bzw. 27 g/minPolymer throughput: 23 g / min or 27 g / min
Die Monofilamente wurden weiter auf einer Streckanlage auf die Restdehnung von 28 +1-2 % bzw. 20 +/-2 % einstufig bei 200°C mit 100 m/min verstreckt. Die wichtigsten Fadeneigenschaften sind in Tabelle I zusam engefasst:The monofilaments were further drawn in a stretching machine to the residual elongation of 28 + 1-2% or 20 +/- 2% in one step at 200 ° C. at 100 m / min. The most important thread properties are summarized in Table I:
Tabelle ITable I
Polymer Dehnung Festigkeit Modul bei 5 % [%] [cN/tex] Dehnung[cN/tex]Polymer elongation strength modulus at 5% [%] [cN / tex] elongation [cN / tex]
PET 27 55 695PET 27 55 695
PET 19 62 860PET 19 62 860
PET/PDMS 29 56 685PET / PDMS 29 56 685
PET/PDMS 19 59 840PET / PDMS 19 59 840
Die Erfindung soll anhand einer Zeichnung näher beschrie¬ ben werden. Es zeigen:The invention will be described in more detail with reference to a drawing. Show it:
Fig. 1 das K/D-Diagramm Polyester gegen Polyester/PDMS Fig. 2 eine photographische Aufnahme von einem Webblatt der Testvorrichtung (nach dem Test)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 ersicht¬ lich, mit Polyester/Polydimethylsiloxan 2,2' etwa die gleichen mechanischen Eigenschaften bei einer bestimmten Restdehnung, verglichen mit reinem Polyethylenterephtha- lat 1,1' erhalten. Alle verstreckten Fäden wiesen Koch¬ schrumpfwerte von 5-6% auf.As can be seen from the K / D diagram in FIG. 1, approximately the same mechanical properties are obtained with polyester / polydimethylsiloxane 2.2 'at a certain residual elongation compared to pure polyethylene terephthalate 1.1'. All 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 erfindungsgemass 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. 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 peeling on the reed of the test machine. It follows from that that Monofilament according to the invention shows significantly improved weavability and longer working cycles.
Die Bestimmung des Reibungskoeffizienten beruht auf der Seilreibungsgleichung. Die Messung des Reibungskoeffizi¬ enten erfolgte mit einem Gerät der Firma Rothschild Mess¬ instrumente, Zürich, während 2 Minuten. Die Bestimmung des Reibungskoeffizienten "Keramik/Faden" weist der Kera¬ mikstift 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 coefficient of friction was measured for 2 minutes using a device from Rothschild Mess¬ instruments, Zurich. The determination of the coefficient of friction "ceramic / thread" has the ceramic pen 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.The following Table II shows the friction coefficients "thread / thread" and "ceramic / thread" polyester compared to polyester / PDMS.
Tabelle IITable II
Polymer μF/F UK/FPolymer μ F / F U K / F
PET 0.33 0.53PET 0.33 0.53
PET/PDMS 0.29 0.48PET / PDMS 0.29 0.48
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 has about 10% lower coefficients of friction both in the thread / thread case and in the ceramic / thread case.
Folgende Tabelle III zeigt die Knoten-"Restreisskraft" Polyester im Vergleich zu Polyester/PDMS ausgedrückt in Prozenten.The following Table III shows the knot "residual tensile strength" polyester compared to polyester / PDMS expressed in percent.
Tabelle IIITable III
Polymer Dt= 28 % Dt= 18 %Polymer Dt = 28% Dt = 18%
PET 90 81 PET/PDMS 91 89PET 90 81 PET / PDMS 91 89
Dt = Dehnung Obwohl bei der Variante mit Dt=28% kein wesentlicher Unterschied festzustellen war, zeigt die Variante PET/PDMS mit Dt=18% überraschend einen geringeren Reisskraftverlust.Dt = elongation Although there was no significant difference in the variant with Dt = 28%, the variant PET / PDMS with Dt = 18% surprisingly shows a lower 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:To determine the fibrillation of monofilaments for screen fabrics, a bundle of identical monofilaments is beaten against a standardized solid at a frequency of 2000 to 3200 rpm for 10 minutes. The results of the fibrillation test are summarized in Table IV, the grading having the following meaning:
Benotung der FibrillationGrading of fibrillation
0.0 - 0.5 : gar keine bzw. sehr schwache Fibrillation0.0 - 0.5: no or very weak fibrillation
0.5 - 1.5 : schwache Fibrillation0.5 - 1.5: weak fibrillation
1.5 - 3.5 : mittelstarke bis starke Fibrillation1.5 - 3.5: medium to strong fibrillation
3.5 - 4.5 : sehr starke Fibrillation > 4.5 : sehr starke Beschädigung Die Fibrillationstestresultate sind in der folgenden Tabelle zusammengefasst.3.5 - 4.5: very severe fibrillation> 4.5: very severe damage The fibrillation test results are summarized in the following table.
Tabelle IVTable IV
Polymer Restdehnung= 28 % Restdehnung= 20 %Polymer residual elongation = 28% residual elongation = 20%
2000/10 2000/15 2000/10 2000/152000/10 2000/15 2000/10 2000/15
PET 1.0 1.5 1.3 2.2 PET/DMS 0.0 0.1 0.3 0.4PET 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.It means 2000/10: 2000 rpm, for 10 minutes.
Es geht daraus hervor, dass das erfindungsgemässe Mono- filament eine wesentlich geringere Fibrillation zeigt.It can be seen from this that the monofilament according to the invention shows a significantly lower fibrillation.
Die erfindungsgemass hergestellten Monofilamente aus PET/PDMS sind auserdem weniger steif als bekannte Monofi¬ lamente.The monofilaments made from PET / PDMS according to the invention are moreover less stiff than known monofilaments.
Nach dem erfindungsgemassen Verfahren ist es erstmals gelungen, die Abschälungen von homogenen Polyester- Monofilamenten mit einem Durchmesser < 0.1 mm und einer Restdehnung < 30% zu eliminieren. The process according to the invention has for the first time succeeded in eliminating the peeling of homogeneous polyester monofilaments with a diameter <0.1 mm and a residual elongation <30%.

Claims

Patentansprüche claims
1. Monofilament mit einem Durchmesser von < 0,1 mm aus einem Polyethylenterephthalat/ Polydialkylsiloxan, dessen Polyethylenterephthalatanteil wenigstens 851. Monofilament with a diameter of <0.1 mm from a polyethylene terephthalate / polydialkylsiloxane, the polyethylene terephthalate portion of which is at least 85
10 Gew.-% aufweist, zur Herstellung von Geweben, dadurch gekennzeichnet, dass das Monofilament eine Bruchdehnung von < 30 %, eine Festigkeit von wenigstens 45 cN/tex und gleichzeitig einen E-Modul bei 5% Dehnung von > 500 cN/tex aufweist.10 wt .-%, for the production of fabrics, characterized in that the monofilament has an elongation at break of <30%, a strength of at least 45 cN / tex and at the same time has a modulus of elasticity at 5% elongation of> 500 cN / tex .
1515
2. Monofilament nach Anspruch 1, gekennzeichnet durch einen Faden/Faden Reibungskoeffizienten μ < 0,30 und einen Keramik/Fäden Reibungskoeffizienten μ < 0,50.2. Monofilament according to claim 1, characterized by a thread / thread friction coefficient μ <0.30 and a ceramic / thread friction coefficient μ <0.50.
20 3. Monofilament nach Anspruch 1, gekennzeichnet durch eine Knotenfestigkeit mit einer Restreisskraft von > 85 % bei einer Dehnung von 18 %, bezogen auf das knotenfreie Monofil.20 3. Monofilament according to claim 1, characterized by a knot strength with a residual tear strength of> 85% at an elongation of 18%, based on the knot-free monofilament.
25 4. Monofilament nach Anspruch 1, gekennzeichnet durch einen Si-Gehalt von 0,05 bis 2,0 Gew.-%, bezogen auf das Gewicht des Monofilaments.25 4. Monofilament according to claim 1, characterized by an Si content of 0.05 to 2.0 wt .-%, based on the weight of the monofilament.
5. Verwendung der Monofilamente mit einem Durchmesser von 30 < 0,1 mm, aus einem Polyethylenterephthalat/ Polydi¬ alkylsiloxan zur abschäl- und abriebfreien Herstel¬ lung von dichten Präzisionsgeweben für Filtermittel, Siebe und solche für den Siebdruck.5. Use of the monofilaments with a diameter of 30 <0.1 mm, made of a polyethylene terephthalate / polydialkyl siloxane for peeling and abrasion-free production of dense precision fabrics for filter media, screens and those for screen printing.
•35 • 35
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
CH2355/93 1993-08-06
CH235593 1993-08-06
CH235593 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

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

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

Family Cites Families (7)

* 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
CA2143424A1 (en) † 1993-07-02 1995-01-12 Halim Baris Process for producing soil-repellent and abrasion-resistant monofilaments and their use

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9504847A1 *

Also Published As

Publication number Publication date
ES2129651T5 (en) 2002-11-16
WO1995004847A1 (en) 1995-02-16
JP3249527B2 (en) 2002-01-21
DE59407653D1 (en) 1999-02-25
EP0663966B1 (en) 1999-01-13
EP0663966B2 (en) 2002-05-02
JPH08503273A (en) 1996-04-09
ES2129651T3 (en) 1999-06-16

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