DE19648884A1 - Melt extruded monofilament - Google Patents

Melt extruded monofilament

Info

Publication number
DE19648884A1
DE19648884A1 DE19648884A DE19648884A DE19648884A1 DE 19648884 A1 DE19648884 A1 DE 19648884A1 DE 19648884 A DE19648884 A DE 19648884A DE 19648884 A DE19648884 A DE 19648884A DE 19648884 A1 DE19648884 A1 DE 19648884A1
Authority
DE
Germany
Prior art keywords
melt extruded
extruded monofilament
plastic material
melt
monofilament
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.)
Withdrawn
Application number
DE19648884A
Other languages
German (de)
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 DE19648884A priority Critical patent/DE19648884A1/en
Priority to AT97118497T priority patent/ATE205558T1/en
Priority to ES97118497T priority patent/ES2163700T3/en
Priority to DE59704592T priority patent/DE59704592D1/en
Priority to EP19970118497 priority patent/EP0844320B1/en
Priority to PT97118497T priority patent/PT844320E/en
Priority to US08/974,316 priority patent/US6033777A/en
Priority to CA 2221532 priority patent/CA2221532C/en
Publication of DE19648884A1 publication Critical patent/DE19648884A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • 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
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • 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
    • 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
    • D01F6/94—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 other polycondensation products

Landscapes

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

Description

Die Erfindung betrifft ein schmelzextrudiertes Monofilament für den Einsatz in technischen Textilien, insbesondere in Pa­ piermaschinenbespannungen, das im wesentlichen aus einem Kunst­ stoffmaterial besteht.The invention relates to a melt-extruded monofilament for use in technical textiles, especially in Pa pier machine clothing, essentially from an art material consists.

Derartige schmelzextrudierte Monofilamente haben eine hohe Fe­ stigkeit und werden daher bevorzugt in festigkeitstragenden Strukturen wie technischen Geweben und Gewirken und insbesonde­ re in Bespannungen für Papiermaschinen eingesetzt.Such melt-extruded monofilaments have a high Fe strength and are therefore preferred in strength-bearing Structures such as technical fabrics and knitted fabrics and in particular re used in clothing for paper machines.

Derzeit werden in erster Linie Monofilamente auf der Basis von Polyethylenterephtalat (PET) verwendet, die in besonderen Fäl­ len zur Erhöhung der Abtriebsfestigkeit einen Anteil thermopla­ stischen Polyurethans (PU) aufweisen, wie sie beispielsweise aus der EP 0 387 395 B1 bekannt sind. Diese Monofilamente auf PET-Basis haben sich in der Praxis durchaus bewährt, jedoch ge­ staltet sich ihre Herstellung oft problematisch. Der Grund da­ für liegt darin, daß das Extrudieren von Monofilamenten aus Polyethylenterephtalat und Polyurethan und deren spätere Fixie­ rung im Gewebe bei hohen Temperaturen stattfindet, was aus ver­ schiedenen Gründen oftmals unerwünscht ist. Insbesondere kön­ nen die zum Einsatz kommenden hohen Temperaturen auch für das Polyurethan schädigend wirken. Diesen Schädigungen kann nur durch aufwendige Maßnahmen und auch nur zum Teil entgegenge­ wirkt werden. Currently, monofilaments based on Polyethylene terephthalate (PET) used in special cases len to increase the resistance to abrasion thermopla have static polyurethane (PU), such as are known from EP 0 387 395 B1. These monofilaments on PET bases have proven their worth in practice, but they do their manufacture is often problematic. The reason there for lies in the fact that the extrusion of monofilaments Polyethylene terephthalate and polyurethane and their later fixie Tissue takes place in the tissue at high temperatures, which from ver is often undesirable for various reasons. In particular, the high temperatures used for this Harming polyurethane. This damage can only through complex measures and only partially counter be effective.  

Aufgabe der Erfindung ist es daher, ein Monofilament für text­ ile Materialien der eingangs genannten Art zu schaffen, das auf einfache Weise und bei niedrigeren Temperaturen extrudier­ bar und später fixierbar ist.The object of the invention is therefore a monofilament for text to create ile materials of the type mentioned at the outset extrude easily and at lower temperatures cash and later fixable.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß das Kunststoffmaterial als Hauptbestandteil Polytrimethylentereph­ talat (PTMT) aufweist. Dadurch, daß erfindungsgemäß Polytrime­ thylenterephtalat (PTMT) an Stelle von den bisher verwendeten Polyethylenterephtalat-Materialien eingesetzt wird, kann in der gewünschten Weise das Extrudieren und das Fixieren der Mo­ nofilamente bei niedrigeren Temperaturen stattfinden. Hier­ durch lassen sich insbesondere auch die Herstellungs und Be­ handlungskosten deutlich senken. Im übrigen hat sich gezeigt, daß die Eigenschaften von Monofilamenten auf PTMA-Basis im Vergleich zu Monofilamenten auf PET-Basis stärker in Richtung der Eigenschaften von Polyamid gehen, was in bestimmten Fällen auch erwünscht sein kann.This object is achieved in that the Plastic material as the main component Polytrimethylenentereph talat (PTMT). The fact that according to the invention Polytrime ethylene terephthalate (PTMT) instead of the previously used Polyethylene terephthalate materials can be used in the desired way of extruding and fixing the Mo nofilaments take place at lower temperatures. Here through in particular the manufacturing and loading significantly reduce operating costs. It has also been shown that the properties of PTMA-based monofilaments in Compared to monofilaments based on PET more strongly in the direction the properties of polyamide go what in certain cases can also be desired.

Grundsätzlich kann das Kunststoffmaterial ausschließlich aus Polytrimethylenterephtalat bestehen. Gemäß einer bevorzugten Ausführungsform weist das Kunststoffmaterial zur Erhöhung der Abriebsfestigkeit jedoch insbesondere elastomeres Polyurethan (PU) auf, und zwar bis zu einem Anteil von 45 Gew.-%. In die­ sem Fall hat die erfindungsgemäße Verwendung von PTMT-Materia­ len den weiteren Vorteil, daß die bei der Herstellung und Be­ handlung auftretenden Temperaturen so niedrig sind, daß sie das Polyurethan nicht schädigen und insofern die im Stand der Technik vorgesehen Schutzmaßnahmen entfallen können, was eben­ falls zur Kostensenkung beiträgt.Basically, the plastic material can only be made of Polytrimethylene terephthalate exist. According to a preferred Embodiment has the plastic material to increase the Abrasion resistance, however, especially elastomeric polyurethane (PU) up to a proportion of 45 wt .-%. In the sem case has the use of PTMT materia according to the invention len the further advantage that the manufacturing and loading temperatures occurring are so low that they do not damage the polyurethane and therefore the Technology provided protective measures can be omitted, which is what if it helps to reduce costs.

In Ausbildung der Erfindung ist vorgesehen, daß das Kunststoff­ material in an sich bekannter Weise einen Hydrolyse-Stabilisa­ tor enthält, und zwar vorzugsweise bis zu einem Anteil von 5 Gew.-%. In an embodiment of the invention it is provided that the plastic material in a manner known per se a hydrolysis stabilizer Tor contains, preferably up to a proportion of 5% by weight.  

Die schmelzextrudierten Monofilamente gemäß der Erfindung kön­ nen eine beliebige Querschnittsform haben, d. h. sie können bei­ spielsweise rechteckig, kleeblattförmig, hundknochenförmig, sternförmig, rund, oval oder dergleichen ausgebildet sein und insbesondere auch einen Hohlquerschnitt aufweisen. Die Quer­ schittsfläche der Monofilamente liegt vorzugsweise zwischen 0,02 mm2 und 3,5 mm2, was bei einem runden Querschnitt einem Durchmesser von 0,08 bis 1 mm entspricht.The melt-extruded monofilaments according to the invention can have any cross-sectional shape, that is to say they can be rectangular, cloverleaf-shaped, dog-bone-shaped, star-shaped, round, oval or the like and in particular also have a hollow cross-section. The cross-sectional area of the monofilaments is preferably between 0.02 mm 2 and 3.5 mm 2 , which corresponds to a diameter of 0.08 to 1 mm with a round cross section.

Das PTMT-Material kann beispielsweise durch Kondensation von Teraphtalsäure und 1,3-Propandiol hergestellt sein.The PTMT material can, for example, by condensation of Teraphthalic acid and 1,3-propanediol.

PTMT-Materialien sind zwar an sich bereits bekannt und auch schon zur Herstellung von Fasern eingesetzt worden. Die dabei erzielte spezifische Festigkeit war jedoch für den Einsatzbe­ reich in festigkeitstragenden Strukturen wie technischen Gewe­ ben und Gewirken zu gering. Umso mehr mußte es überraschen, daß die erfindungsgemäßen Monofilamente auf PTMT-Basis eine für den Einsatz in solchen technischen Textilien und insbeson­ dere Papiermaschinenbespannungen ausreichende Festigkeit auf­ weisen.PTMT materials are already known per se and also have already been used for the production of fibers. The one there However, the specific strength achieved was for the application rich in strength-bearing structures such as technical fabrics weaving and knitting too little. It was all the more surprising, that the PTMT-based monofilaments of the invention for use in such technical textiles and in particular paper machine clothing has sufficient strength point.

Des weiteren konnten mit den erfindungsgemäß schmelzextrudier­ ten Monofilamenten auch wesentlich höhere Verstreckungsgrade erreicht werden, als dies in der Literatur für Fasern auf PTMT-Basis angegeben ist. In Versuchen wurden mit den erfin­ dungsgemäßen Monofilamenten Verstreckungsgrade von zu 1,0 : 4,5 erreicht, demgegenüber sind die für PTMT-Fasern er­ reichbaren Verstreckungsgrade in der Literatur lediglich mit 1,0 : 2,4 angegeben.Furthermore, melt extrusion according to the invention was possible monofilaments also significantly higher degrees of stretching be achieved than in the literature for fibers PTMT base is specified. Experiments were carried out with the inventors monofilaments according to the invention 1.0: 4.5 achieved, compared to that for PTMT fibers reachable degrees of stretching in the literature only with 1.0: 2.4.

Claims (9)

1. Schmelzextrudiertes Monofilament für den Einsatz in tech­ nischen Textilien, insbesondere in Papiermaschinenbespan­ nungen, das im wesentlichen aus einem Kunststoffmaterial besteht, dadurch gekennzeichnet, daß das Kunststoffmaterial als Hauptbestandteil Polytrimethylenterephtalat (PTMT) auf­ weist.1. melt-extruded monofilament for use in tech nical textiles, in particular in papermachine coverings, which consists essentially of a plastic material, characterized in that the plastic material as the main component has polytrimethylene terephthalate (PTMT). 2. Schmelzextrudiertes Monofilament nach Anspruch 1, dadurch gekennzeichnet, daß das Kunststoffmaterial zur Er­ höhung der Abriebsfestigkeit Polyurethan (PU), insbesondere elastomeres Polyurethan, aufweist.2. melt extruded monofilament according to claim 1, characterized in that the plastic material for Er Increased abrasion resistance polyurethane (PU), in particular elastomeric polyurethane. 3. Schmelzextrudiertes Monofilament nach Anspruch 2, dadurch gekennzeichnet, daß der Polyurethananteil bis zu 45 Gew.-% beträgt.3. melt extruded monofilament according to claim 2, characterized in that the polyurethane content up to Is 45% by weight. 4. Schmelzextrudiertes Monofilament nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Kunststoffmaterial einen Hy­ drolysestabilisator aufweist.4. melt extruded monofilament according to any one of the claims 1 to 3, characterized in that the plastic material has a Hy has drolysis stabilizer. 5. Schmelzextrudiertes Monofilament nach Anspruch 4, dadurch gekennzeichnet, daß der Anteil des Hydrolysestabili­ sators bis zu 5 Gew.-% beträgt. 5. melt extruded monofilament according to claim 4, characterized in that the proportion of the hydrolysis stabili sator is up to 5 wt .-%.   6. Schmelzextrudiertes Monofilament nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Querschnittsfläche des Mono­ filaments 0,02 mm2 bis 3,5 mm2 beträgt.6. melt extruded monofilament according to one of claims 1 to 5, characterized in that the cross-sectional area of the monofilament is 0.02 mm 2 to 3.5 mm 2 . 7. Schmelzextrudiertes Monofilament nach Anspruch 6, dadurch gekennzeichnet, daß das Monofilament einen runden Querschnitt mit einem Durchmesser zwischen 0,08 und 1 mm aufweist.7. melt extruded monofilament according to claim 6, characterized in that the monofilament is round Cross section with a diameter between 0.08 and 1 mm having. 8. Schmelzextrudiertes Monofilament nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß es einen quadratischen, recht­ eckigen, ovalartigen, kleeblattförmigen oder hundeknochen­ förmigen Querschnitt hat.8. melt extruded monofilament according to any one of the claims 1 to 7, characterized in that it is a square, right angular, oval-like, shamrock-shaped or dog bones has a shaped cross section. 9. Papiermaschinenbespannung, dadurch gekennzeichnet, daß sie schmelzextrudierte Monofila­ mente nach einem der Ansprüche 1 bis 8 aufweist.9. paper machine clothing, characterized in that they melt extruded monofilaments elements according to one of claims 1 to 8.
DE19648884A 1996-11-20 1996-11-26 Melt extruded monofilament Withdrawn DE19648884A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE19648884A DE19648884A1 (en) 1996-11-20 1996-11-26 Melt extruded monofilament
AT97118497T ATE205558T1 (en) 1996-11-20 1997-10-24 MELTS EXTRUDED MONOFILAMENT
ES97118497T ES2163700T3 (en) 1996-11-20 1997-10-24 MONOFILAMENT EXTRUDED IN FUSION.
DE59704592T DE59704592D1 (en) 1996-11-20 1997-10-24 Melt extruded monofilament
EP19970118497 EP0844320B1 (en) 1996-11-20 1997-10-24 Melt extruded monofilament
PT97118497T PT844320E (en) 1996-11-20 1997-10-24 EXTRUDED MONOFILIMATION FROM FUSES
US08/974,316 US6033777A (en) 1996-11-20 1997-11-19 Melt-extruded monofilament
CA 2221532 CA2221532C (en) 1996-11-20 1997-11-19 Melt-extruded monofilament

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19648092 1996-11-20
DE19648884A DE19648884A1 (en) 1996-11-20 1996-11-26 Melt extruded monofilament

Publications (1)

Publication Number Publication Date
DE19648884A1 true DE19648884A1 (en) 1998-06-04

Family

ID=7812279

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19648884A Withdrawn DE19648884A1 (en) 1996-11-20 1996-11-26 Melt extruded monofilament
DE59704592T Expired - Lifetime DE59704592D1 (en) 1996-11-20 1997-10-24 Melt extruded monofilament

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59704592T Expired - Lifetime DE59704592D1 (en) 1996-11-20 1997-10-24 Melt extruded monofilament

Country Status (1)

Country Link
DE (2) DE19648884A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4436877A (en) * 1982-11-08 1984-03-13 Polyplastics Co., Ltd. Thermoplastic polyester composition
EP0387395B1 (en) * 1989-03-17 1994-12-07 Jwi Limited Stabilized polyurethane modified polyester forming fabric
DE4410399A1 (en) * 1994-03-25 1995-09-28 Hoechst Ag Abrasion-resistant polyester blend with increased processing safety, monofilaments made of it and their production and use
WO1996000808A1 (en) * 1994-06-30 1996-01-11 E.I. Du Pont De Nemours And Company Process for making poly(trimethylene terephthalate) bulked continuous filaments, the filaments thereof and carpets made therefrom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4436877A (en) * 1982-11-08 1984-03-13 Polyplastics Co., Ltd. Thermoplastic polyester composition
EP0387395B1 (en) * 1989-03-17 1994-12-07 Jwi Limited Stabilized polyurethane modified polyester forming fabric
DE4410399A1 (en) * 1994-03-25 1995-09-28 Hoechst Ag Abrasion-resistant polyester blend with increased processing safety, monofilaments made of it and their production and use
WO1996000808A1 (en) * 1994-06-30 1996-01-11 E.I. Du Pont De Nemours And Company Process for making poly(trimethylene terephthalate) bulked continuous filaments, the filaments thereof and carpets made therefrom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Derwent 15709 Y/09 (1977) *

Also Published As

Publication number Publication date
DE59704592D1 (en) 2001-10-18

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