DE4142788A1 - Webbing material e.g. wet felt for high-performance paper machines - has web-like substrate and layer of high temp.-resistant thermoplastic fibres, e.g. polyether-sulphone, etc. - Google Patents

Webbing material e.g. wet felt for high-performance paper machines - has web-like substrate and layer of high temp.-resistant thermoplastic fibres, e.g. polyether-sulphone, etc.

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Publication number
DE4142788A1
DE4142788A1 DE4142788A DE4142788A DE4142788A1 DE 4142788 A1 DE4142788 A1 DE 4142788A1 DE 4142788 A DE4142788 A DE 4142788A DE 4142788 A DE4142788 A DE 4142788A DE 4142788 A1 DE4142788 A1 DE 4142788A1
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DE
Germany
Prior art keywords
fibers
fibres
paper
polyamide
resistant thermoplastic
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.)
Ceased
Application number
DE4142788A
Other languages
German (de)
Inventor
Bernd Dipl Ing Sabrowski
Ulrich Dipl Chem Dr Altenhofen
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.)
Wurttembergische Filztuchfabrik D Geschmay GmbH
Original Assignee
Wurttembergische Filztuchfabrik D Geschmay 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 Wurttembergische Filztuchfabrik D Geschmay GmbH filed Critical Wurttembergische Filztuchfabrik D Geschmay GmbH
Priority to DE4142788A priority Critical patent/DE4142788A1/en
Publication of DE4142788A1 publication Critical patent/DE4142788A1/en
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Webbing material (I) comprises a web-like substrate material (II) with fibres (III) attached to it. (III) consist at least partly of high temp.-resistant thermoplastic (IV). Pref. (II) consists of at least partly of (IV). If (I) has fibres on both sides of (II), the fibre layer facing the press and the paper consists of (IV), or the paper-side felt consists of at least 2 layers, of which the outer layer consists of (IV). The fibres facing the paper are oriented in the machine direction, and all fibres are pinned. Material (II) and/or the fibres comprise a mixt. of conventional fibres, e.g. polyamide, polyester, acrylic, PES or PP, with fibres or (IV), pref. aromatic polyamide, aromatic polyester, PEEK, PEK, polyether-sulphone, PPS or polyamide-imide. Pref., (II) consists at least partly of polyether-sulphone, and fibres (III) consist at least partly of P USE/ADVANTAGE - Provides a wet felt covering for use in high-performance paper machines, which will withstand the high temps. (above 100 deg.C) in a pulse press without collapsing (c.f. prior-art felt based on polyamide fleece on a polyamide or polyester web). The vol. of (I) remains the same even at above 200 deg.C, and its liq.-absorption properties and draining function are unaffected.

Description

Die Erfindung betrifft eine Materialbahn, insbesondere für Papiermaschinen, wie Naßfilzbespannung u. dgl., mit einem bahnenförmigen Trägermaterial und daran befestigten Fasern.The invention relates to a material web, in particular for Paper machines, such as wet felt covering u. Like., with a web-shaped carrier material and fibers attached to it.

Derart ausgebildete Materialbahnen werden u. a. als Naßfilz­ bespannung für die Papierherstellung verwendet, die aus einem Gewebe aus Polyamid oder Polyester bestehen, auf dem ein Vlies aus Polyamidfasern befestigt ist. In der Regel erfolgt die Befestigung durch eine Vernadelung. Anstelle der Vliese aus Polyamidfasern können aber auch Acrylvliese bzw. PES-Vliese oder PP-Vliese verwendet werden. Derart aufgebaute Naßfilzbespannungen sind für die Trocknung von Papierbahnen in der Regel gut geeignet, da sie teilweise chemisch stabilisiert sind und ein hohes aktives Volumen aufweisen. Üblicherweise haben Papiermaschinen in der Naß­ partie Temperaturen bis max. 80°C. Such trained material webs are u. a. as wet felt covering used for papermaking, which from a fabric made of polyamide or polyester on which a fleece made of polyamide fibers is attached. Usually it is attached by needling. Instead of The nonwovens made of polyamide fibers can also be acrylic nonwovens or PES fleece or PP fleece can be used. Such built-up wet felt coverings are for the drying of Paper webs are usually well suited because they are partially are chemically stabilized and have a high active volume exhibit. Usually paper machines have wet lot temperatures up to max. 80 ° C.  

Hochleistungspapiermaschinen (wie beispielsweise im OFE technischen Symposium am 27. September 1991 in Paris von Y. Fall beschrieben) weisen jedoch auch Pressen für die Hochtemperaturtrocknung auf, die derartige Nadelfilzbe­ spannungen stark beanspruchen. Da die Nadelfilzbespannung in diesen Pressen höheren Temperaturbelastungen ausgesetzt ist, kommt es unter Umständen zu Bügeleffekten, was den Nachteil mit sich bringt, daß die Fasern nach kurzer Zeit inkompressibel sind, da das Gewebe und das Vlies kollabie­ ren. Hierdurch wird der Filz undurchlässig und er verliert seine Entwässerungsfunktion. Insbesondere bei Impulspres­ sen mit z. B. Hochtemperaturheizung der Walze bei Tempera­ turen größer als 100°C führen zu einem Versagen derart bekannter Nadelfilzbespannungen innerhalb von ein bis zwei Stunden Laufzeit. Diese Bespannungen weisen dann eine ver­ schmolzene Filzoberfläche auf, wobei das Gewebe flachge­ drückt ist. Die Bespannungen sind dann unbrauchbar.High-performance paper machines (such as in the OFE technical symposium on September 27, 1991 in Paris from Y. case described) also have presses for the High temperature drying on such needle felt stress. Because the needle felt covering exposed to higher temperatures in these presses , ironing effects may occur, which affects the The disadvantage is that the fibers after a short time are incompressible because the fabric and the fleece collapse Ren. This makes the felt impermeable and it loses its drainage function. Especially with impulse press sen with z. B. High temperature heating of the roller at tempera Structures greater than 100 ° C lead to failure like this Known needled felt coverings within one to two Hours run time. These fabrics then have a ver melted felt surface, the fabric being flattened presses. The fabrics are then unusable.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Mate­ rialbahn der eingangs genannten Art derart auszubilden, daß sie den oben genannten Forderungen entspricht.The invention is therefore based on the object of a mate rialbahn of the type mentioned in such a way that it meets the above requirements.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß wenigstens ein Teil der an dem Trägermaterial befestigten Fasern aus einem hochtemperaturbeständigen Thermoplast besteht.This object is achieved in that at least a portion of those attached to the substrate Fibers made of a high temperature resistant thermoplastic consists.

Die Verwendung eines Vlieses aus Fasern, die aus einem hochtemperaturbeständigen Thermoplast bestehen, hat den Vorteil, daß derartige Materialbahnen bzw. Naßfilzbespan­ nungen selbst bei hohen Temperaturen von mehr als 200°C ihr Volumen beibehalten und insbesondere nicht verschmelzen. Das Volumen des Gewebes bleibt erhalten und dient uneinge­ schränkt der Aufnahme der abzuführenden Flüssigkeit, so daß die Entwässerungsfunktion der Nadelfilzbespannung er­ halten bleibt.The use of a non-woven fabric made of fibers high temperature resistant thermoplastic has the Advantage that such material webs or wet felt covering even at high temperatures of more than 200 ° C maintain their volume and in particular do not merge. The volume of the tissue is preserved and serves no purpose limits the absorption of the liquid to be discharged, so  that the drainage function of the needle felt covering he lasts.

Bei einer Weiterbildung ist vorgesehen, daß wenigstens ein Teil des Trägermaterials aus einem hochtemperaturbeständi­ gen und bei höheren Temperaturen elastischen Thermoplast besteht. Bei dieser Ausführungsform ist nicht nur das mit dem Trägermaterial verbundene Vlies, sondern auch das Trä­ germaterial selbst aus einem hochtemperaturbeständigen Thermoplast hergestellt, wodurch der Erhalt der inneren Struktur der Materialbahn gewährleistet ist, da z. B. ein Verzug oder ein Anschmelzen des Trägermaterials, wodurch die Permeabilität der Bespannung unkontrolliert verändert wird, vermieden wird.In a further development it is provided that at least one Part of the carrier material made of a high temperature resistant conditions and at higher temperatures elastic thermoplastic consists. In this embodiment, not only is that with the nonwoven bonded to the carrier material, but also the carrier Germ material even from a high temperature resistant Made of thermoplastic, thereby preserving the inner Structure of the material web is guaranteed because, for. B. a Warping or melting of the carrier material, whereby the permeability of the fabric changed in an uncontrolled manner is avoided.

Bei einem bevorzugten Ausführungsbeispiel ist vorgesehen, daß bei einer Materialbahn, bei der auf beiden Seiten des Trägermaterials Fasern befestigt sind, die einer Presse der Papiermaschine und der Papierbahn zugewandte Faser­ schicht aus einem hochtemperaturbeständigen Thermoplast besteht. Bei dieser Ausführungsform kann dann die der Papierbahn abgewandte Faserschicht aus einem herkömmlichen Material bestehen, da diese Faserschicht weniger hohen Be­ anspruchungen, insbesondere hinsichtlich der Temperatur, ausgesetzt ist. Der Teil der Materialbahn, der sowohl den thermischen als auch den mechanischen Belastungen direkt ausgesetzt ist, kann diesen widerstehen, da er aus einem hochtemperaturbeständigen und schlagzähen Thermoplast be­ steht, so daß sowohl die Permeabilität als auch das Volumen des Vlieses erhalten bleiben.In a preferred embodiment, that with a web of material on both sides of the Backing fibers are attached to a press the fiber facing the paper machine and the paper web layer made of a high temperature resistant thermoplastic consists. In this embodiment, the Layer of fiber facing away from paper from a conventional Material exist because this fiber layer has less high loading demands, especially with regard to temperature, is exposed. The part of the material web that covers both the thermal as well as mechanical loads directly exposed, it can resist it because it comes from a high temperature resistant and impact resistant thermoplastic stands, so that both the permeability and the volume of the fleece are preserved.

Vorteilhaft können die aus einem hochtemperaturbeständigen Thermoplast bestehenden Fasern auf das Trägermaterial auf­ gebracht werden. Dies hat den Vorteil, daß das Vlies auf herkömmliche Weise wie Vliese mit herkömmlichen Materia­ lien mit dem Trägermaterial verbunden werden kann und daher die Herstellungsverfahren für die Materialbahn nicht umge­ stellt werden müssen.It can be advantageous from a high temperature resistant Thermoplastic existing fibers on the carrier material  to be brought. This has the advantage that the fleece is on conventional way like nonwovens with conventional materia lien can be connected to the carrier material and therefore the manufacturing process for the material web is not reversed must be put.

Eine Weiterbildung sieht vor, daß das Trägermaterial und/oder die Fasern aus einer Mischung aus konventionellen Fasern, wie Polyamid-, Polyester-, Acrylfasern und Fasern aus PES und PP, und aus hochtemperaturbeständigen thermo­ plastischen Fasern bestehen. Derart aufgebaute Material­ bahnen zeigen gegenüber herkömmlichen Materialbahnen eine hervorragende Formbeständigkeit und Langlebigkeit, was auf den Stützeffekt der hochtemperaturbeständigen Thermoplasten in den Fasergemischen zurückzuführen ist.A further development provides that the carrier material and / or the fibers from a mixture of conventional Fibers such as polyamide, polyester, acrylic fibers and fibers made of PES and PP, and made of high temperature resistant thermo plastic fibers exist. Material constructed in this way webs show a compared to conventional material webs excellent dimensional stability and longevity, what's on the support effect of the high temperature resistant thermoplastics in the fiber mixtures.

Bei besonders bevorzugten Ausführungsbeispielen stammen die hochtemperaturbeständigen Thermoplaste aus der Gruppe der aromatischen Polyamide, der aromatischen Polyester, PEEK, PEK, Polyäthersulfon, Polyphenylsulfid oder Polyami­ dimid. Diese Auswahl stellt bevorzugte Vertreter dar und soll nicht als abschließend angesehen werden.In particularly preferred exemplary embodiments the high temperature resistant thermoplastics from the group aromatic polyamides, aromatic polyesters, PEEK, PEK, polyether sulfone, polyphenyl sulfide or polyami dimid. This selection represents preferred representatives and should not be considered final.

Es besteht auch die Möglichkeit, alternierend zum Beispiel PEEK-Filamente und PA- bzw. PES-Filamente im Gewebe zu verwenden und Fasermischungen, z. B. aus PES und Polypheny­ lensulfidfasern zu nehmen.There is also the possibility of alternating for example PEEK filaments and PA or PES filaments in the fabric use and fiber blends, e.g. B. from PES and Polypheny to take lens sulfide fibers.

Claims (9)

1. Materialbahn, insbesondere für Papiermaschinen, wie Naßfilz od. dgl., mit einem bahnenförmigen Träger­ material und daran befestigten Fasern, dadurch gekennzeichnet, daß wenigstens ein Teil der an dem Trägermaterial be­ festigten Fasern aus einem hochtemperaturbeständigen Thermoplast besteht.1. Material web, in particular for paper machines such as wet felt or the like, with a web-shaped carrier material and fibers attached thereto, characterized in that at least part of the fibers attached to the carrier material consists of a high-temperature-resistant thermoplastic. 2. Materialbahn nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Teil des Trägermaterials aus einem hochtemperaturbeständigen Thermoplast besteht.2. Material web according to claim 1, characterized in that at least part of the carrier material from a high temperature resistant thermoplastic. 3. Materialbahn nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß bei einer Materialbahn, bei der auf beiden Seiten des Trägermaterials Fasern befestigt sind, die einer Presse der Papiermaschine und der Papierbahn zugewandte Faserschicht aus einem hoch­ temperaturbeständigen Thermoplast besteht. 3. Material web according to claim 1 or 2, characterized records that in a web of material on Fastened on both sides of the carrier material fibers are that of a press of the paper machine and the Paper web facing fiber layer from a high temperature-resistant thermoplastic.   4. Materialbahn nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zumindest das papier­ seitige Vlies aus mindestens zwei Schichten besteht, wovon die äußere aus hochtemperaturbeständigen Fasern besteht.4. Material web according to one of the preceding claims, characterized in that at least the paper side fleece consists of at least two layers, of which the outer one is made of high temperature resistant fibers consists. 5. Materialbahn nach den vorhergehenden Ansprüchen, da­ durch gekennzeichnet, daß die dem Papier zugewandten Fasern überwiegend in Laufrichtung orientiert sind.5. Material web according to the preceding claims, since characterized in that the paper facing Fibers are mainly oriented in the running direction. 6. Materialbahn nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Fasern aufgenadelt sind.6. Material web according to one of the preceding claims, characterized in that the fibers are needled are. 7. Materialbahn nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Trägermaterial und/oder die Fasern aus einer Mischung aus konventionel­ len Fasern, wie Polyamid-, Polyester-, Acrylfasern und Fasern aus PES und PP, und aus hochtemperatur­ beständigen thermoplastischen Fasern bestehen.7. Material web according to one of the preceding claims, characterized in that the carrier material and / or the fibers from a mixture of conventional len fibers, such as polyamide, polyester, acrylic fibers and fibers from PES and PP, and from high temperature resistant thermoplastic fibers. 8. Materialbahn nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die hochtemperaturbestän­ digen Thermoplaste aus einer Gruppe der aromatischen Polyamide, der aromatischen Polyester, PEEK, PEK, Polyäthersulfon, Polyphenylensulfid oder Polyamidimid stammen.8. Material web according to one of the preceding claims, characterized in that the high temperature resistant thermoplastic from a group of aromatic Polyamides, aromatic polyester, PEEK, PEK, Polyether sulfone, polyphenylene sulfide or polyamide imide come. 9. Materialbahn nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Trägermaterial wenig­ stens zum Teil aus Polyäthersulfon und die daran be­ festigten Fasern wenigstens zum Teil aus PPS bestehen.9. Material web according to one of the preceding claims, characterized in that the carrier material little at least partly made of polyether sulfone and the strengthened fibers consist at least in part of PPS.
DE4142788A 1991-12-23 1991-12-23 Webbing material e.g. wet felt for high-performance paper machines - has web-like substrate and layer of high temp.-resistant thermoplastic fibres, e.g. polyether-sulphone, etc. Ceased DE4142788A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4142788A DE4142788A1 (en) 1991-12-23 1991-12-23 Webbing material e.g. wet felt for high-performance paper machines - has web-like substrate and layer of high temp.-resistant thermoplastic fibres, e.g. polyether-sulphone, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4142788A DE4142788A1 (en) 1991-12-23 1991-12-23 Webbing material e.g. wet felt for high-performance paper machines - has web-like substrate and layer of high temp.-resistant thermoplastic fibres, e.g. polyether-sulphone, etc.

Publications (1)

Publication Number Publication Date
DE4142788A1 true DE4142788A1 (en) 1993-06-24

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DE4142788A Ceased DE4142788A1 (en) 1991-12-23 1991-12-23 Webbing material e.g. wet felt for high-performance paper machines - has web-like substrate and layer of high temp.-resistant thermoplastic fibres, e.g. polyether-sulphone, etc.

Country Status (1)

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DE (1) DE4142788A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882217A (en) * 1988-11-09 1989-11-21 Albany International Corp. Needled press felt
WO1990012918A1 (en) * 1989-04-24 1990-11-01 Albany International Corp. Paper machine felts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882217A (en) * 1988-11-09 1989-11-21 Albany International Corp. Needled press felt
WO1990012918A1 (en) * 1989-04-24 1990-11-01 Albany International Corp. Paper machine felts

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