EP0965665B1 - Monofilament and papermaking fabric made from the same - Google Patents

Monofilament and papermaking fabric made from the same Download PDF

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Publication number
EP0965665B1
EP0965665B1 EP98111207A EP98111207A EP0965665B1 EP 0965665 B1 EP0965665 B1 EP 0965665B1 EP 98111207 A EP98111207 A EP 98111207A EP 98111207 A EP98111207 A EP 98111207A EP 0965665 B1 EP0965665 B1 EP 0965665B1
Authority
EP
European Patent Office
Prior art keywords
polyamide
monofilament
paper machine
plastic material
monofilament according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98111207A
Other languages
German (de)
French (fr)
Other versions
EP0965665A1 (en
Inventor
Walter Dr. Best
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.)
Heimbach GmbH and Co KG
Original Assignee
Thomas Josef Heimbach and Co GmbH
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
Application filed by Thomas Josef Heimbach and Co GmbH filed Critical Thomas Josef Heimbach and Co GmbH
Priority to EP98111207A priority Critical patent/EP0965665B1/en
Priority to DE59806442T priority patent/DE59806442D1/en
Priority to AT98111207T priority patent/ATE228585T1/en
Priority to CA002274342A priority patent/CA2274342A1/en
Priority to US09/334,071 priority patent/US6319606B1/en
Priority to ZA9903999A priority patent/ZA993999B/en
Priority to IDP990584D priority patent/ID22950A/en
Priority to JP11170660A priority patent/JP3076907B2/en
Priority to CNB991086554A priority patent/CN1137296C/en
Publication of EP0965665A1 publication Critical patent/EP0965665A1/en
Application granted granted Critical
Publication of EP0965665B1 publication Critical patent/EP0965665B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • 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
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
    • 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
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2915—Rod, strand, filament or fiber including textile, cloth or fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y10T428/2969—Polyamide, polyimide or polyester

Definitions

  • the invention relates to a monofilament for use in technical textiles, especially in paper machine clothing, made of a plastic material with a main component Polytrimethylene terephthalate (PTMT) and at least an additional ingredient.
  • PTMT Polytrimethylene terephthalate
  • monofilaments are used for technical textiles used as threads from which woven, knitted or Threads, etc. can be produced.
  • Special Technical textiles are endless treadmills - with or without Seam - that circulate in machines. This includes paper machine clothing, that of education and transportation of Serve paper web through the individual parts of the paper machine, namely the forming area, the press section and the token section.
  • the paper machine clothing is for the individual parts of the paper machine are designed differently.
  • Chlorine-containing substances that occur are paper machine clothing designed with the threads of the carrier fabric made of polybutylene terephthalate and the needled Nonwoven fabric made of polyethylene terephthalate. Because the mechanical properties of the latter material are worse than that of polyamide, the use of Polytrimethylene terephthalate (PTMT), also polypropylene terephthalate mentioned, have been proposed (cf. US-A-5,137,601), both for the monofilaments of the base fabric as well as for the fibers of a possible nonwoven layer.
  • PTMT Polytrimethylene terephthalate
  • This material will be the same chemical Resistance like polybutylene and polyethylene terephthalate attributed, but also similar mechanical Properties like polyamide 6, especially with regard to elasticity and abrasion resistance. Regarding the thermal resistance of this material be better than polyamide 6.
  • polyester especially of polyethylene terephthalate to combine significantly improved abrasion behavior (cf. DE-A-44 10 399).
  • the polyester has been proposed for this purpose to mix a thermoplastic polyurethane.
  • the invention is accordingly based on the object To find plastic material that on the one hand the cheap chemical and mechanical properties of PTMT on the other hand, it is much better for woven or knitted fabrics can be processed and thus the production more uniform and warp-free textile webs.
  • This task is accomplished by a monofilament made from a plastic material solved with a main ingredient PTMT, at according to the invention the additional component is a polyamide or is a mixture of several types of polyamide. It has shown that a monofilament made of such a plastic material much better with fabrics, knitted fabrics or the like processed for example for paper machine clothing can be. The reason for this is the fact that the elasticity of the monofilament due to the addition of polyamide is significantly reduced. It has - with a view to US-A-5,137,601, surprisingly - showed that chemical resistance, especially against chlorine Substances not essential due to the addition of polyamide suffers.
  • polyamide In principle, all types of polyamide come as an additional component in question, including the polyamide 6 types, although they have a relatively high water absorption. Because the water intake PTMT is very low, the higher water absorption capacity comes of polyamide 6 types not essential to wear. However, even better properties can be achieve the admixture of polyamide 11 and / or polyamide 12, because these polyamide types are characterized by low water absorption as well as even better abrasion resistance and chemical Characterize durability. The PTMT can also do several different types of polyamide can be added.
  • the proportion of the additional polyamide component can be set in this way be that - depending on the particular used Polyamide type - an optimal property profile is achieved for the respective application.
  • the amount can go up to 50%, preferably up to 45% by weight.
  • the workability and also the The strength of the monofilament is already considerable improved if the polyamide content is 5%.
  • a special one Favorable property profile results from shares which are between 10 and 35%.
  • the mixture according to the invention is homogeneous in the sense that it is not limited to solution-like distributions.
  • the mixture can also consist of a uniform mixture of the powdered components or made of pellets his.
  • the monofilament according to the invention can be of any cross-sectional shape have, for example rectangular, shamrock-shaped, dog-shaped, star-shaped, round or oval or the like. Also training as a hollow monofilament it is an option.
  • the cross-sectional area of the Monofilaments should preferably be between 0.02 and 3.5 mm2 lie what a diameter with a round cross-section from 0.08 to 1 mm.
  • the monofilament according to the invention for producing a Carrier used for a paper machine clothing there is also the option of one or both sides to apply a fiber layer, the fibers of which at least partly as a main component polytrimethylene terephthalate having.
  • Polyamide also comes as an additional component here or a mixture of several polyamides in question. Conveniently, corresponds to the composition of the plastic material for the fibers of those for the monofilaments.
  • paper machine clothing constructed in this way can used in all parts of the paper machine come. If they are designed as felt, they are suitable in particular as an upper or lower felt in one Shoe press. The paper machine clothing stands out despite the polyamide content due to good temperature resistance off, so that they can also be used where the Working temperature is above 55 °.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)

Abstract

A polytrimethyleneterephthalate based monofilament for use in technical textiles contains a polyamide or a mixture of polyamide types. A monofilament (I) for use in technical textiles, preferably in materials for paper making machines comprises a polymeric material having polytrimethyleneterephthalate as the main component and an additive comprising a polyamide or a mixture of polyamide types. An Independent claim is included for a material for a paper making machine formed using the monofilament (I).

Description

Die Erfindung betrifft ein Monofilament für den Einsatz in technischen Textilien, insbesondere in Papiermaschinenbespannungen, aus einem Kunststoffmaterial mit einem Hauptbestandteil Polytrimethylenterephthalat (PTMT) und wenigstens einem Zusatzbestandteil.The invention relates to a monofilament for use in technical textiles, especially in paper machine clothing, made of a plastic material with a main component Polytrimethylene terephthalate (PTMT) and at least an additional ingredient.

Für technische Textilien werden in vielen Fällen Monofilamente als Fäden eingesetzt, aus denen Gewebe, Gewirke oder Fadengelege etc. hergestellt werden. Entweder besteht das technische Textil aus solchen Geweben oder Gewirken oder Fadengelegen, oder diese bilden einen Träger für Beschichtungen, aufgenadelte Faservliese oder dergleichen. Besondere technische Textilien sind endlose Laufbänder - mit oder ohne Naht -, die in Maschinen umlaufen. Hierzu gehören Papiermaschinenbespannungen, die der Bildung und dem Transport der Papierbahn durch die einzelnen Teile der Papiermaschine dienen, nämlich dem Formierbereich, der Pressen- und der Tokkenpartie. Dabei sind die Papiermaschinenbespannungen für die einzelnen Teile der Papiermaschine unterschiedlich gestaltet. In many cases, monofilaments are used for technical textiles used as threads from which woven, knitted or Threads, etc. can be produced. Either that exists technical textiles made from such woven or knitted or thread-laid fabrics, or they form a carrier for coatings, needled nonwovens or the like. Special Technical textiles are endless treadmills - with or without Seam - that circulate in machines. This includes paper machine clothing, that of education and transportation of Serve paper web through the individual parts of the paper machine, namely the forming area, the press section and the token section. The paper machine clothing is for the individual parts of the paper machine are designed differently.

Für das Kunststoffmaterial sind in der Vergangenheit verschiedene Vorschläge gemacht worden. Bei Papiermaschinenbespannungen werden seit langem Polyester- oder Polyamid-Typen eingesetzt, bei letzteren vornehmlich Polyamid 6-Typen (vgl. DE-A-44 10 399). In jüngerer Zeit sind Vorschläge gemacht worden, auch Polyamid 11 oder Polyamid 12-Typen zu verwenden (vgl. japanische Anmeldeveröffentlichung 60-52616), und zwar sowohl für das Trägergewebe als auch für die Fasern der aufgenadelten Faserschichten (vgl. EP-A-0 070 708; EP-A-0 372 769). Zuvor war auch schon vorgeschlagen worden, Monofilamente aus einem Kern beispielsweise aus Polyamid 6.6 oder Polyehtylenterephthalat und einem Mantel aus Polyamid 11 oder 12 herzustellen (vgl. EP-A-0 070 708).In the past, there were different types of plastic material Suggestions have been made. For paper machine clothing have long been polyester or polyamide types used, with the latter mainly polyamide 6 types (cf. DE-A-44 10 399). More recently suggestions have been made has also been using polyamide 11 or polyamide 12 types (see Japanese Application Publication 60-52616), and both for the base fabric and for the fibers the needled fiber layers (cf. EP-A-0 070 708; EP-A-0 372 769). Previously, it had also been suggested Monofilaments made of a core, for example made of polyamide 6.6 or polyethylene terephthalate and a jacket made of polyamide 11 or 12 to produce (see. EP-A-0 070 708).

Zur Verbesserung der Widerstandsfähigkeit gegen in Papiermaschinen auftretenden, chlorhaltigen Substanzen sind Papiermaschinenbespannungen konzipiert worden, bei denen die Fäden des Trägergewebes aus Polybutylenterephthalat und das aufgenadelte Faservlies aus Polyethylenterephthalat bestehen. Da die mechanischen Eigenschaften des letzteren Materials schlechter sind als die von Polyamid, ist die Verwendung von Polytrimethylenterephthalat (PTMT), auch Polypropylenterephthalat genannt, vorgeschlagen worden (vgl. US-A-5,137,601), und zwar sowohl für die Monofilamente des Trägergewebes als auch für die Fasern einer eventuellen Faservliesauflage. Diesem Material werden die gleiche chemisehe Beständigkeit wie dem Polybutylen- und dem Polyethylenterephthalat zugeschrieben, jedoch zusätzlich ähnliche mechanische Eigenschaften wie Polyamid 6, insbesondere bezüglich der Elastizität und des Abriebwiderstandes. Hinsichtlich der thermischen Widerstandsfähigkeit soll dieses Material besser sein als Polyamid 6.To improve the resistance to in paper machines Chlorine-containing substances that occur are paper machine clothing designed with the threads of the carrier fabric made of polybutylene terephthalate and the needled Nonwoven fabric made of polyethylene terephthalate. Because the mechanical properties of the latter material are worse than that of polyamide, the use of Polytrimethylene terephthalate (PTMT), also polypropylene terephthalate mentioned, have been proposed (cf. US-A-5,137,601), both for the monofilaments of the base fabric as well as for the fibers of a possible nonwoven layer. This material will be the same chemical Resistance like polybutylene and polyethylene terephthalate attributed, but also similar mechanical Properties like polyamide 6, especially with regard to elasticity and abrasion resistance. Regarding the thermal resistance of this material be better than polyamide 6.

Daneben ist auch versucht worden, die guten Eigenschaften des Polyesters, insbesondere von Polyethylenterephthalat mit erheblich verbessertem Abriebverhalten zu vereinen (vgl. DE-A-44 10 399). Hierzu ist vorgeschlagen worden, dem Polyester ein thermoplastisches Polyurethan zuzumischen.In addition, the good properties have also been tried of the polyester, especially of polyethylene terephthalate to combine significantly improved abrasion behavior (cf. DE-A-44 10 399). The polyester has been proposed for this purpose to mix a thermoplastic polyurethane.

Eine Weiterentwicklung auf Basis Polytrimethylenterephthalat ist der EP-A-0 844 320 zu entnehmen. Sie offenbart ein Monofilament, das nur teilweise, wenn auch als Hauptbestandteil Polytrimethylenterephthalat enthält, das zwecks Erhöhung der Abriebfestigkeit mit Polyurethan, insbesondere elastomerem Polyurethan, vermischt ist. Es hat sich jedoch gezeigt, daß bei der Verarbeitung von Monofilamenten aus PTMT-Material zu Geweben oder Gewirken erhebliche Probleme auftreten. Es kommt zu Ungleichmäßigkeiten und Verzügen. Es wurde festgestellt, daß der Grund hierfür die hohe Elastizität der PTMT-Monofile ist, obwohl in der US-A-5,137,601 dieses Elastizitätsverhalten als günstig für die Herstellbarkeit angegeben ist. Das Elastizitätsverhalten ändert sich auch nicht durch die in der EP-A-0 844 320 vorgeschlagene Beimischung von Polyurethan.A further development based on polytrimethylene terephthalate can be found in EP-A-0 844 320. It reveals a monofilament only partially, albeit as the main component Contains polytrimethylene terephthalate to increase the Abrasion resistance with polyurethane, especially elastomeric Polyurethane is mixed. However, it has been shown that when processing monofilaments made of PTMT material Woven or knitted fabrics experience significant problems. It there are irregularities and delays. It was determined, that the reason for this is the high elasticity of the PTMT monofilaments is, although in US-A-5,137,601 this elasticity behavior stated as favorable for the manufacturability is. The elasticity behavior does not change either the admixture of polyurethane proposed in EP-A-0 844 320.

Der Erfindung liegt demgemäß die Aufgabe zugrunde, ein Kunststoffmaterial zu finden, das einerseits die günstigen chemischen und mechanischen Eigenschaften von PTMT hat, sich andererseits aber wesentlich besser zu Geweben oder Gewirken verarbeiten läßt und damit die Herstellung gleichmäßiger und verzugsfreier Textilbahnen zuläßt.The invention is accordingly based on the object To find plastic material that on the one hand the cheap chemical and mechanical properties of PTMT on the other hand, it is much better for woven or knitted fabrics can be processed and thus the production more uniform and warp-free textile webs.

Diese Aufgabe wird durch eine Monofilament aus einem Kunststoffmaterial mit einem Hauptbestandteil PTMT gelöst, bei dem erfindungsgemäß der Zusatzbestandteil ein Polyamid oder eine Mischung aus mehreren Polyamid-Typen ist. Es hat sich gezeigt, daß ein Monofilament aus einem solchen Kunststoffmaterial wesentlich besser zu Geweben, Gewirken oder dergleichen beispielsweise für Papiermaschinenbespannungen verarbeitet werden kann. Ursache hierfür ist der Umstand, daß die Elastizität des Monofilaments durch die Polyamidbeimengung erheblich herabgesetzt wird. Dabei hat sich - mit Blick auf die US-A-5,137,601 überraschenderweise - gezeigt, daß die chemische Beständigkeit insbesondere gegen chlorhaltige Substanzen durch die Polyamidbeimengung nicht wesentlich leidet. Noch überraschender ist, daß ein Festigkeitsgewinn erzielbar ist, der über den Festigkeitswerten der Einzelkomponenten - PTMT einerseits und Polyamid andererseits - liegt. Dies eröffnet die Möglichkeit, technische Textilien gleicher Zugfestigkeit mit Monofilamenten geringeren Querschnitts herzustellen und hierdurch Kosten und Gewicht einzusparen.This task is accomplished by a monofilament made from a plastic material solved with a main ingredient PTMT, at according to the invention the additional component is a polyamide or is a mixture of several types of polyamide. It has shown that a monofilament made of such a plastic material much better with fabrics, knitted fabrics or the like processed for example for paper machine clothing can be. The reason for this is the fact that the elasticity of the monofilament due to the addition of polyamide is significantly reduced. It has - with a view to US-A-5,137,601, surprisingly - showed that chemical resistance, especially against chlorine Substances not essential due to the addition of polyamide suffers. Even more surprising is that a gain in strength is achievable, which is above the strength values of the individual components - PTMT on the one hand and polyamide on the other - lies. This opens up the possibility of technical textiles same tensile strength with monofilaments of smaller cross-section to manufacture and thereby save costs and weight.

Als Zusatzbestandteil kommen grundsätzlich alle Polyamid-Typen in Frage, also auch die Polyamid 6-Typen, obwohl sie eine relativ hohe Wasseraufnahme haben. Da die Wasseraufnahme von PTMT sehr gering ist, kommt die höhere Wasseraufnahmefähigkeit von Polyamid 6-Typen nicht wesentlich zum Tragen. Noch bessere Eigenschaften lassen sich allerdings durch die Beimischung von Polyamid 11 und/oder Polyamid 12 erreichen, da sich diese Polyamid-Typen durch geringe Wasseraufnahme sowie noch besseren Abriebswiderstand und chemische Beständigkeit auszeichnen. Dabei können dem PTMT auch mehrere verschiedene Polyamid-Typen zugegeben werden.In principle, all types of polyamide come as an additional component in question, including the polyamide 6 types, although they have a relatively high water absorption. Because the water intake PTMT is very low, the higher water absorption capacity comes of polyamide 6 types not essential to wear. However, even better properties can be achieve the admixture of polyamide 11 and / or polyamide 12, because these polyamide types are characterized by low water absorption as well as even better abrasion resistance and chemical Characterize durability. The PTMT can also do several different types of polyamide can be added.

Der Anteil des Polyamid-Zusatzbestandteils kann so eingestellt werden, daß - in Abhängigkeit vom jeweils verwendeten Polyamid-Typ - ein möglichst optimales Eigenschaftsprofil für den jeweiligen Anwendungszweck erreicht wird. Der Anteil kann bis zu 50 %, bevorzugt bis zu 45 Gew.% gehen. Die Verarbeitbarkeit und auch die Festigkeit des Monofilaments wird jedoch schon erheblich verbessert, wenn der Polyamid-Anteil 5 % beträgt. Ein besonders günstiges Eigenschaftsprofil ergibt sich bei Anteilen, die zwischen 10 und 35 % liegen.The proportion of the additional polyamide component can be set in this way be that - depending on the particular used Polyamide type - an optimal property profile is achieved for the respective application. The amount can go up to 50%, preferably up to 45% by weight. The workability and also the The strength of the monofilament is already considerable improved if the polyamide content is 5%. A special one Favorable property profile results from shares which are between 10 and 35%.

Die erfindungsgemäße Mischung ist in dem Sinne homogen, als sie nicht auf lösungsähnliche Verteilungen beschränkt ist. Die Mischung kann auch aus einer gleichmäßigen Mischung der pulverförmigen Bestandteile oder auch von Pellets hergestellt sein.The mixture according to the invention is homogeneous in the sense that it is not limited to solution-like distributions. The mixture can also consist of a uniform mixture of the powdered components or made of pellets his.

Es versteht sich, daß auch weitere Zusatzbestandteile vorhanden sein können, beispielsweise ein Hydrolysestabilisator und/oder ein Antioxidanz, wobei die Anteile jeweils bis 5 % gehen können.It goes without saying that further additional components are also present can be, for example, a hydrolysis stabilizer and / or an antioxidant, the proportions in each case up to 5% can go.

Das Monofilament gemäß der Erfindung kann beliebige Querschittsformen haben, beispielsweise rechteckig, kleeblattförmig, hundeknochenförmig, sternförmig, rund oder oval oder dergleichen ausgebildet sein. Auch die Ausbildung als Hohlmonofilament kommt in Frage. Die Querschnittsfläche des Monofilaments sollte vorzugsweise zwischen 0,02 und 3,5 qmm liegen, was bei einem runden Querschnitt einem Durchmesser von 0,08 bis 1 mm entspricht.The monofilament according to the invention can be of any cross-sectional shape have, for example rectangular, shamrock-shaped, dog-shaped, star-shaped, round or oval or the like. Also training as a hollow monofilament it is an option. The cross-sectional area of the Monofilaments should preferably be between 0.02 and 3.5 mm² lie what a diameter with a round cross-section from 0.08 to 1 mm.

Sofern das erfindungsgemäße Monofilament zur Herstellung eines Trägers für eine Papiermaschinenbespannung verwendet wird, besteht zusätzlich die Möglichkeit, ein- oder beidseitig eine Faserschicht aufzubringen, deren Fasern wenigstens teilweise als Hauptbestandteil Polytrimethylenterephthalat aufweist. Als Zusatzbestandteil kommt auch hier Polyamid oder eine Mischung von mehreren Polyamiden in Frage. Zweckmäßigerweise entspricht die Zusammensetzung des Kunststoffmaterials für die Fasern derjenigen für die Monofilamente.If the monofilament according to the invention for producing a Carrier used for a paper machine clothing there is also the option of one or both sides to apply a fiber layer, the fibers of which at least partly as a main component polytrimethylene terephthalate having. Polyamide also comes as an additional component here or a mixture of several polyamides in question. Conveniently, corresponds to the composition of the plastic material for the fibers of those for the monofilaments.

Grundsätzlich können solcher Art aufgebaute Papiermaschinenbespannungen in allen Teilen der Papiermaschine zur Anwendung kommen. Wenn sie als Filz ausgebildet sind, eignen sie sich insbesondere als Ober- oder Unterfilz in einer Schuhpresse. Dabei zeichnet sich die Papiermaschinenbespannung trotz des Polyamid-Anteils durch gute Temperaturbeständigkeit aus, so daß sie auch dort eingesetzt werden, wo die Arbeitstemperatur über 55° liegt.In principle, paper machine clothing constructed in this way can used in all parts of the paper machine come. If they are designed as felt, they are suitable in particular as an upper or lower felt in one Shoe press. The paper machine clothing stands out despite the polyamide content due to good temperature resistance off, so that they can also be used where the Working temperature is above 55 °.

Claims (14)

  1. Monofilament for use in technical textiles, in particular in paper machine coverings, of a plastic material with a main proportion of polytrimethyleneterephthalate (PTMT) and at least one supplementary portion, characterised in that the supplementary portion is a polyamide or a mixture of a plurality of polyamide types.
  2. Monofilament according to Claim 1, characterised in that the supplementary portion is polyamide 11 and/or polyamide 12.
  3. Monofilament according to Claim 1 or 2, characterised in that the proportion of the supplementary portion is up to 45 weight-%.
  4. Monofilament according to one of Claims 1 to 3, characterised in that the proportion of the supplementary portion is at least 5%.
  5. Monofilament according to one of Claims 1 to 4, characterised in that the plastic material comprises a hydrolysis stabiliser.
  6. Monofilament according to Claim 1 to 5, characterised in that the proportion of the hydrolysis stabiliser is up to 5 weight-%.
  7. Monofilament according to one of Claims 1 to 6, characterised in that the plastic material contains an antioxidant.
  8. Monofilament according to one of Claims 1 to 7, characterised in that the cross-sectional surface of the monofilament lies between 0.2 and 3.5 sqmm.
  9. Monofilament according to one of Claims 1 to 8, characterised in that it has a round cross-section with a diameter between 0.08 and 1 mm.
  10. Monofilament according to one of Claims 1 to 8, characterised in that it has a square, rectangular, oval, cloverleaf or dog-bone shaped cross-section.
  11. Paper machine covering with monofilaments, characterised in that at least a portion of the monofilaments is designed according to one of Claims 1 to 10.
  12. Paper machine coverings according to Claim 11, characterised in that the paper machine covering has on one or both sides a fibre layer the fibres of which include at least partially polytrimethyleneterephthalate as main component.
  13. Paper machine covering according to Claim 12, characterised in that the fibres with polytrimethyleneterephthalate comprise as main component as supplementary component a polyamide or a mixture of a plurality of polyamide types.
  14. Paper machine covering according to Claim 13, characterised in that the plastic material for the monofilaments and the fibres, which contain polytrimethyleneterephalate as main component, are of identical composition.
EP98111207A 1998-06-18 1998-06-18 Monofilament and papermaking fabric made from the same Expired - Lifetime EP0965665B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP98111207A EP0965665B1 (en) 1998-06-18 1998-06-18 Monofilament and papermaking fabric made from the same
DE59806442T DE59806442D1 (en) 1998-06-18 1998-06-18 Monofilament and paper machine clothing made with it
AT98111207T ATE228585T1 (en) 1998-06-18 1998-06-18 MONOFILAMENT AND PAPER MACHINE CLOTHING MADE THEREFROM
CA002274342A CA2274342A1 (en) 1998-06-18 1999-06-11 Monofilament fabric manufactured therewith, and papermaking
US09/334,071 US6319606B1 (en) 1998-06-18 1999-06-16 Monofilament, and papermaking fabric manufactured therewith
ZA9903999A ZA993999B (en) 1998-06-18 1999-06-17 Monofilament, and papermaking fabric manufactured therewith, and papermaking.
IDP990584D ID22950A (en) 1998-06-18 1999-06-17 MONOFILAMENT, AND PAPER MAKING FABRIC MADE WITH IT
JP11170660A JP3076907B2 (en) 1998-06-18 1999-06-17 Cloth for paper machine
CNB991086554A CN1137296C (en) 1998-06-18 1999-06-18 Filament and paper-machine screen made up by using said filament

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98111207A EP0965665B1 (en) 1998-06-18 1998-06-18 Monofilament and papermaking fabric made from the same

Publications (2)

Publication Number Publication Date
EP0965665A1 EP0965665A1 (en) 1999-12-22
EP0965665B1 true EP0965665B1 (en) 2002-11-27

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Application Number Title Priority Date Filing Date
EP98111207A Expired - Lifetime EP0965665B1 (en) 1998-06-18 1998-06-18 Monofilament and papermaking fabric made from the same

Country Status (9)

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US (1) US6319606B1 (en)
EP (1) EP0965665B1 (en)
JP (1) JP3076907B2 (en)
CN (1) CN1137296C (en)
AT (1) ATE228585T1 (en)
CA (1) CA2274342A1 (en)
DE (1) DE59806442D1 (en)
ID (1) ID22950A (en)
ZA (1) ZA993999B (en)

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US9890501B2 (en) * 2012-07-27 2018-02-13 Voith Patent Gmbh Dryer fabric
US9074319B2 (en) * 2013-03-15 2015-07-07 Voith Patent Gmbh Monofilament yarn for a paper machine clothing fabric

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ATE228585T1 (en) 2002-12-15
ID22950A (en) 1999-12-23
DE59806442D1 (en) 2003-01-09
JP3076907B2 (en) 2000-08-14
ZA993999B (en) 1999-12-20
CN1137296C (en) 2004-02-04
CN1245838A (en) 2000-03-01
EP0965665A1 (en) 1999-12-22
CA2274342A1 (en) 1999-12-18
JP2000096342A (en) 2000-04-04
US6319606B1 (en) 2001-11-20

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