DE102020001262A1 - Process for the production of a fiber fleece with different fiber orientations - Google Patents

Process for the production of a fiber fleece with different fiber orientations Download PDF

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DE102020001262A1
DE102020001262A1 DE102020001262.0A DE102020001262A DE102020001262A1 DE 102020001262 A1 DE102020001262 A1 DE 102020001262A1 DE 102020001262 A DE102020001262 A DE 102020001262A DE 102020001262 A1 DE102020001262 A1 DE 102020001262A1
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fleece
combing
combing process
fiber
fibers
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DE102020001262.0A
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German (de)
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Anmelder Gleich
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Priority to DE102020001262.0A priority Critical patent/DE102020001262A1/en
Priority to EP21159295.1A priority patent/EP3872246A1/en
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    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres

Abstract

Ein Vlies mit unterschiedlicher Orientierung der Fasern in Schichten wird durch eine Vliesbildung und einen Kämmvorgang erzeugt.A fleece with different orientations of the fibers in layers is produced by fleece formation and a combing process.

Description

Es ist bekannt, Vliese mit einer Wirrlage oder mit einer orientierten Faserlage herzustellen. Bei orientierten Vliesen werden die Fasern von der Krempel hauptsächlich in Maschinenrichtung, hierunter versteht man die Laufrichtung der Faserbahn als Vlies, gelegt.It is known to produce nonwovens with a random layer or with an oriented fiber layer. In the case of oriented nonwovens, the fibers from the card are mainly laid in the machine direction, which means the running direction of the fiber web as the nonwoven.

Was der Fachmann unter Faserorientierung (-ausrichtung) versteht, ist bei Kathrin Pietsch/ Hilmar Fuchs in „Textile Werkstoffe für den Leichtbau“, Kapitel 9.3.2.2 „Vliesstoffhalbzeuge und Vliesbildungstechniken“ beschrieben.What the expert understands by fiber orientation (alignment) is described by Kathrin Pietsch / Hilmar Fuchs in "Textile materials for lightweight construction", Chapter 9.3.2.2 "Nonwoven semi-finished products and nonwoven forming techniques".

Ein solches Vlies kann durch einen sogenannten Kreuzleger oder Täfler in versetzten übereinanderliegenden Lagen auf ein bewegtes Band kontinuierlich abgeliefert werden. Die Fasern in den Lagen haben dann eine hauptsächliche Ausrichtung quer zur Laufrichtung des Abzugbandes. Durch Einstellen der Abliefergeschwindigkeit des Legewagens zur Geschwindigkeit des Abzugbandes sind bis 45° Ausrichtungen möglich. Durch Verziehen dieses Mehrlagenvlieses kann die Faserausrichtung des Vlieses weiter in Richtung der Laufrichtung des Abzugsbandes ausgerichtet werden. Bei allen diesen Verfahren ist die Ausrichtung im Vlies gleichgerichtet. Man kann Vliese mit unterschiedlicher Ausrichtung durch Zusammenführen von separat auf unterschiedlichen Maschinen gefertigten Vlieslagen produzieren.Such a fleece can be continuously delivered to a moving belt by a so-called cross-layer or panel in staggered superimposed layers. The fibers in the layers then have a main orientation transverse to the running direction of the take-off belt. By adjusting the delivery speed of the laying trolley to the speed of the discharge belt, alignments of up to 45 ° are possible. By distorting this multilayer fleece, the fiber orientation of the fleece can be further aligned in the direction of the running direction of the take-off belt. In all of these processes, the alignment in the fleece is the same. You can produce nonwovens with different orientations by bringing together layers of nonwoven produced separately on different machines.

Aufgabe der Erfindung ist es, ein Verfahren zu schaffen, bei dem aus einem Vlies ein Vlies mit mindestens 2 verschiedenen Faserausrichtungen in verschiedenen Zonen des Vlieses geschaffen wird. Erfindungsgemäß geschieht dies dadurch, dass ein Vlies mit einer Faserausrichtung quer zur Laufrichtung erzeugt wird und dann mindestens die Fasern einer Schicht durch eine mechanische Behandlung umorientiert werden. Eine Ausführungsform der Erfindung wird anhand der 1 wie folgt beschrieben.The object of the invention is to create a method in which a fleece with at least 2 different fiber orientations in different zones of the fleece is created. According to the invention, this takes place in that a fleece is produced with a fiber orientation transverse to the running direction and then at least the fibers of one layer are reoriented by a mechanical treatment. An embodiment of the invention is based on the 1 described as follows.

Fasern 1) werden in einen Behälter 2) gefüllt. Aus dem Behälter 2) werden die Fasern durch Einzugswalzen 3) abgezogen und einer Walze 4) mit z. B. garnierter Oberfläche zugeführt. Die Walze 4) vereinzelt die Fasern 1) weiter und gibt sie über Leitelemente 5) an ein besaugtes Siebband 6) ab.Fibers 1 ) are in a container 2 ) filled. From the container 2 ) the fibers are fed through feed rollers 3 ) peeled off and a roller 4th ) with z. B. supplied garnished surface. The roller 4th ) separates the fibers 1 ) and passes them on via guide elements 5 ) to a vacuum filter belt 6th ) away.

Die Fasern sind durch den Ablageprozess quer zur Laufrichtung des Bandes abgelegt und eine Faserschicht 8) gebildet. Eine Walze 9), die mit einer genadelten oder garnierten Oberfläche versehen ist, „kämmt“ die Fasern einer obersten Schicht in Laufrichtung. Eventuell überschüssige Fasern werden abgesaugt und den frischen Fasern beigemischt. Ein Vlies 10) mit in Laufrichtung orientierten Fasern in einer oberen Schicht und quer zur Laufrichtung in einer darunterliegenden Schicht entsteht. Eine Absaugung 7) verhindert ein Verrutschen der Fasern auf dem Sieb. The fibers are deposited through the deposition process transversely to the running direction of the tape and a fiber layer 8th ) educated. A roller 9 ), which is provided with a needled or garnished surface, "combs" the fibers of a top layer in the running direction. Any excess fibers are sucked off and mixed with the fresh fibers. A fleece 10 ) with fibers oriented in the machine direction in an upper layer and transversely to the machine direction in an underlying layer. A suction 7th ) prevents the fibers from slipping on the sieve.

Es ist auch denkbar, den Kämmprozess auf der unteren Seite des Vlieses zu wiederholen. Auf diese Weise kann ein Vlies mit hervorragender Längs- zu Quer-Festigkeit erzeugt werden. In einigen Anwendungen ist diese webartige Struktur erwünscht.It is also conceivable to repeat the combing process on the lower side of the fleece. In this way, a fleece with excellent longitudinal to transverse strength can be produced. In some applications this web-like structure is desirable.

Claims (9)

Verfahren zur Herstellung eines Vlieses mit verschiedener Orientierung der Fasern in verschiedenen Schichten dadurch gekennzeichnet, dass ein quer zur Laufrichtung orientiertes Faservlies durch einen Kämmvorgang auf mindestens einer Oberfläche behandelt wird.A method for producing a fleece with different orientations of the fibers in different layers, characterized in that a fiber fleece oriented transversely to the running direction is treated by a combing process on at least one surface. Verfahren nach Anspruch 1) dadurch gekennzeichnet, dass der Kämmvorgang durch eine mit einer Struktur versehenen Oberfläche durchgeführt wird.Procedure according to Claim 1 ) characterized in that the combing process is carried out through a surface provided with a structure. Verfahren nach Anspruch 1) und 2) dadurch gekennzeichnet, dass die Struktur durch Spitzen, Sägezahndraht oder Noppen erzeugt wird.Procedure according to Claim 1 ) and 2) characterized in that the structure is created by points, sawtooth wire or knobs. Kämmvorgang nach Anspruch 1) bis 3) dadurch gekennzeichnet, dass der Kämmvorgang durch eine strukturierte Walze oder Band erfolgt.Combing process after Claim 1 ) to 3) characterized in that the combing process is carried out by a structured roller or belt. Verfahren und Vorrichtung nach Anspruch 1) bis 4) dadurch gekennzeichnet, dass die Kämmelemente sich mit mindestens der doppelten Geschwindigkeit wie die Transportgeschwindigkeit des ganzen Vlieses bewegen.Method and device according to Claim 1 ) to 4) characterized in that the combing elements move at at least twice the speed as the transport speed of the entire fleece. Verfahren und Vorrichtung nach Anspruch 1) bis 5) dadurch gekennzeichnet, dass die Kämmelemente sich im Kämmvorgang entgegen der Transportrichtung des Vlieses bewegen.Method and device according to Claim 1 ) to 5) characterized in that the combing elements move in the combing process against the transport direction of the fleece. Anspruch nach Anspruch 1) bis 6) dadurch gekennzeichnet, dass auf der dem Kämmprozess gegenüberliegenden Oberfläche des Vlieses ein Unterdruck herrscht oder/ und eine strukturierte Oberfläche des Transportelements besteht.Claim according to Claim 1 ) to 6) characterized in that there is a negative pressure on the surface of the fleece opposite the combing process and / or there is a structured surface of the transport element. Vorrichtung nach Anspruch 1) bis 7) dadurch gekennzeichnet, dass der Vorgang kontinuierlich erfolgt.Device according to Claim 1 ) to 7) characterized in that the process takes place continuously. Vorrichtung nach Anspruch 1) bis 8) dadurch gekennzeichnet, dass Vliesbildung und Kämmvorgang auf mindestens einem Siebband und/ oder einer Siebtrommel erfolgt.Device according to Claim 1 ) to 8) characterized in that the web formation and the combing process take place on at least one screen belt and / or one screen drum.
DE102020001262.0A 2020-02-27 2020-02-27 Process for the production of a fiber fleece with different fiber orientations Pending DE102020001262A1 (en)

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DE102020001262.0A DE102020001262A1 (en) 2020-02-27 2020-02-27 Process for the production of a fiber fleece with different fiber orientations
EP21159295.1A EP3872246A1 (en) 2020-02-27 2021-02-25 Method for producing a fibrous web with varying fibre orientation

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DE102020001262.0A DE102020001262A1 (en) 2020-02-27 2020-02-27 Process for the production of a fiber fleece with different fiber orientations

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741082A1 (en) 1986-12-31 1988-07-28 Textima Veb K Apparatus for the patterning, structuring and variation of surface mass
DE202009012819U1 (en) 2009-09-24 2011-02-10 Matecs Sp. Z.O.O. Plant for the production of fiber fleece mats and fiber fleece produced therewith
DE102009036053A1 (en) 2009-07-31 2011-02-10 Sächsisches Textilforschungsinstitut e.V. Reorientation of fibers to produce webs with controlled fiber orientation, involves arranging reorientation elements on fibrous web, where provided fibrous web is reoriented by continuous immersing of active tools in orientated fiber

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD256880A1 (en) * 1986-12-31 1988-05-25 Univ Dresden Tech DEVICE FOR RETRIEVAL
DE4234355A1 (en) * 1992-10-12 1994-04-14 Dilo Kg Maschf Oskar Mfg. felt of great width and longitudinal fibres - out of staple fibre web, as web is fed continuously, staple fibres being combed out on diagonal line, etc.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741082A1 (en) 1986-12-31 1988-07-28 Textima Veb K Apparatus for the patterning, structuring and variation of surface mass
DE102009036053A1 (en) 2009-07-31 2011-02-10 Sächsisches Textilforschungsinstitut e.V. Reorientation of fibers to produce webs with controlled fiber orientation, involves arranging reorientation elements on fibrous web, where provided fibrous web is reoriented by continuous immersing of active tools in orientated fiber
DE202009012819U1 (en) 2009-09-24 2011-02-10 Matecs Sp. Z.O.O. Plant for the production of fiber fleece mats and fiber fleece produced therewith

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PIETSCH, Kathrin ; FUCHS, Hilmar: Kapitel 9: Vliesstoffhalbzeuge und Vliesbildungstechniken. In: Textile Werkstoffe für den Leichtbau : Techniken - Verfahren - Materialien - Eigenschaften. Berlin : Springer, 2011. S. 327-366. - ISBN 978-3-642-17991-4 (P); 978-3-642-17992-1 (E). DOI: 10.1007/978-3-642-17992-1_9. URL: https://link.springer.com/content/pdf/10.1007%2F978-3-642-17992-1_9.pdf [abgerufen am 2020-04-15]

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