EP2087159A1 - Process for preventing sticking of fibrous nonwoven web material in the bonding operation and apparatus for preventing sticking of fibrous nonwoven web material in the bonding operation - Google Patents

Process for preventing sticking of fibrous nonwoven web material in the bonding operation and apparatus for preventing sticking of fibrous nonwoven web material in the bonding operation

Info

Publication number
EP2087159A1
EP2087159A1 EP07816194A EP07816194A EP2087159A1 EP 2087159 A1 EP2087159 A1 EP 2087159A1 EP 07816194 A EP07816194 A EP 07816194A EP 07816194 A EP07816194 A EP 07816194A EP 2087159 A1 EP2087159 A1 EP 2087159A1
Authority
EP
European Patent Office
Prior art keywords
bonding
conveyor belt
web material
nonwoven web
fibrous nonwoven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07816194A
Other languages
German (de)
French (fr)
Other versions
EP2087159B1 (en
Inventor
Michael Niklaus
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.)
Strahm Textile Systems AG
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Strahm Textile Systems AG
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 Strahm Textile Systems AG filed Critical Strahm Textile Systems AG
Publication of EP2087159A1 publication Critical patent/EP2087159A1/en
Application granted granted Critical
Publication of EP2087159B1 publication Critical patent/EP2087159B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding

Definitions

  • the invention relates to a method for preventing the bonding of nonwoven material according to the preamble of patent claim 1.
  • the invention further relates to a device for preventing the bonding of nonwoven material according to the preamble of patent claim 5.
  • Nonwoven material such as wadding, nonwovens, and the like, are prepared by adding fusible fibers or fibers having a meltable surface to enhance cohesion and volume retention.
  • the felts enriched with fusible fibers are heat treated in an oven. It can not be avoided during this process (heat treatment) that individual fusible fibers, which are located on the surface of the web, with the conveyor belt on which they lie and come into contact.
  • An object of the present invention is to provide a method and an apparatus with which the adhesion of the melt fibers to the conveyor belt can be prevented.
  • melt fibers on the nonwoven surface in the short term so to heat strongly so that they contract or curl under the action of heat and no longer come into contact with the conveyor belt when subjected to the heat treatment in the heating zone.
  • Figure 1 is a vertical section through a
  • Figure 2 is an enlarged section of the nonwoven material in Figure 1 over the heat source.
  • a bonding furnace 1 of known design shown schematically by a rectangle, at least one conveyor belt 3, preferably a belt made of latticed material, can be seen. This is guided around a plurality of deflection rollers 5, wherein the deflection rollers 5 are located outside the bonding furnace, but at least outside a heat zone 7 arranged in the bonding furnace 1.
  • the heat zone 7 may comprise a number of nozzles, through which ' hot air through the conveyor belt 3 through to a nonwoven material 9 and through this is passed.
  • an extraction takes place by means of suitably arranged suction nozzles.
  • the application of hot air can also be done in sections from top to bottom and bottom to top (no illustration).
  • a suitable heat source 11 is arranged below the conveyor belt 3.
  • the heat source 11 extends over the entire width of the conveyor belt or of the nonwoven material 9 lying on the conveyor belt and conveyed by it.
  • the nonwoven material 9 is passed in the example described from the left side of Figure 1 on the conveyor belt 3 and it leaves the latter on the right side.
  • a high temperature can be achieved and by the heat radiation located on the surface of the nonwoven material 9 melt fibers, ie the side facing the conveyor belt during the passage of the heat source 11 are briefly strongly heated.
  • the shock-like heating of the melt fibers they contract and thereby move away from the upper side of the conveyor belt 3 into the surface of the nonwoven material.
  • the nonwoven material 9 penetrating Heat treatment are these "retracted" melt fibers outside the contact region of the conveyor belt 3 and there is no more bonding instead.
  • the heat source 11 may generate radiant heat, or hot air may be blown onto the nonwoven surface through a slot die (not shown). If a slot nozzle is used, it can additionally be achieved that the nonwoven material 9 is lifted slightly off the conveyor belt 3 during the shock-like heat treatment, and the melting fibers 13 do not touch the belt 3 during contraction.
  • the melting of the near-surface melt fibers 9 is additionally favored.
  • the nonwoven material 9 is shown enlarged over a heat source 11.
  • Reference numeral 15 denotes the fine non-woven non-melting fibers; with reference numeral 13 melt fibers, ie fibers 15 of a low-melting material, such as polypropylene, which serves to bond the non-melting fibers with each other.
  • the fusible fibers 13 Prior to the high temperature shock-like heat treatment over the heat source 11, the fusible fibers 13 are finely dispersed in the nonwoven material 9. Individual fibers 13 and 15 protrude beyond the surfaces of the nonwoven material 9. However, as soon as they have passed the region of the heat source 11, the melt fibers 13 have contracted due to the thermal shock and no longer project beyond the surface of the nonwoven material 9 (right side of FIG. 2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

To prevent fusible fibres (13) in a fibrous nonwoven web material (9) from sticking to the conveyor belt (3) during the bonding operation in a bonding oven (1), the surface of the fibrous nonwoven web material (9) is briefly subjected to high heat before and/or after entry of the fibrous nonwoven web material (9) into the heating zone (7) of the bonding oven (1). As a result of the shock-like heating of the surface of the fibrous nonwoven web material (9), the fusible fibres in the fibrous nonwoven web material (9) become retracted and/or curled and sticking to the conveyor belt (3) is avoided.

Description

Verfahren zum Verhindern des Verklebens von Vliesmaterial beim Bonding-Prozess und Vorrichtung zum Verhindern des Verklebens von Vliesmaterial beim Bonding-ProzessA method for preventing bonding of nonwoven material in the bonding process and apparatus for preventing bonding of nonwoven material in the bonding process
Gegenstand der Erfindung ist ein Verfahren zum Verhindern des Verklebens von Vliesmaterial gemäss Oberbegriff des Patentanspruchs 1. Gegenstand der Erfindung ist weiter eine Vorrichtung zum Verhindern des Verklebens von Vliesmaterial gemäss Oberbegriff des Patentanspruchs 5.The invention relates to a method for preventing the bonding of nonwoven material according to the preamble of patent claim 1. The invention further relates to a device for preventing the bonding of nonwoven material according to the preamble of patent claim 5.
Vliesmaterial wie Watte, Vliese und dergleichen werden zur Verbesserung des Zusammenhalts und Erhalts des Volumens durch Beigabe von schmelzfähigen Fasern oder von Fasern mit einer schmelzfähigen Oberfläche hergestellt. Um eine Verbindung bzw. eine Verklebung der nichtschmelzenden Fasern, die die Grundlage für das Vliesmaterial bilden, mit den verschmelzbaren Fasern zu erreichen, wird das mit schmelzbaren Fasern angereicherte Vlies in einem Ofen einer Wärmebehandlung ausgesetzt. Es lässt sich während dieses Prozesses (Wärmebehandlung) nicht vermeiden, dass einzelne schmelzbare Fasern, welche sich an der Oberfläche des Vlieses befinden, mit dem Transportband, auf dem sie liegen und in Kontakt gelangen, verbinden. Diese, wenn auch kleinen Verbindungsbrücken zwischen Vlies- und Transportband führen dazu, dass am Ende der Wärmebehandlung, d.h. am Ausgang des Bonding-Ofens Teile des Vlieses vom Band mitgerissen werden, da sie mit diesem verklebt sind. Dies führt einerseits zur Verschmutzung des Bandes mit thermoplastischen Fasern und andererseits einer Qualitätsminderung des Vlieses, da von diesem an gewissen Teilen Vliesfetzen aus der Oberfläche herausgerissen worden sind. Mechanische Abstreifmittel bringen nur einen Teilerfolg; sie verhindern auf keinen Fall die Verschmutzung des Transportbandes und ein erneutes Verbinden des Bandes mit dem Werkstück, wenn es erneut in die Wärmezone im Ofen eintritt .Nonwoven material, such as wadding, nonwovens, and the like, are prepared by adding fusible fibers or fibers having a meltable surface to enhance cohesion and volume retention. In order to achieve bonding of the non-fusible fibers forming the basis for the nonwoven material with the fusible fibers, the felts enriched with fusible fibers are heat treated in an oven. It can not be avoided during this process (heat treatment) that individual fusible fibers, which are located on the surface of the web, with the conveyor belt on which they lie and come into contact. This, if Even small connecting bridges between fleece and conveyor belt cause that at the end of the heat treatment, ie at the output of the bonding furnace parts of the fleece are entrained from the tape, since they are glued to this. On the one hand, this leads to contamination of the strip with thermoplastic fibers and, on the other hand, to a reduction in the quality of the nonwoven, since nonwoven scraps have been torn out of the surface at certain parts of it. Mechanical strippers bring only a partial success; they will in no way prevent contamination of the conveyor belt and re-connecting the belt to the workpiece when it re-enters the heat zone in the oven.
Eine Aufgabe der vorliegenden Erfindung besteht nun darin, ein Verfahren und eine Vorrichtung zu schaffen, mit denen das Ankleben der Schmelzfasern am Transportband verhindert werden kann.An object of the present invention is to provide a method and an apparatus with which the adhesion of the melt fibers to the conveyor belt can be prevented.
Gelöst werden diese Aufgaben durch ein Verfahren gemäss den Merkmalen des Patentanspruchs 1 sowie einer Vorrichtung gemäss den Merkmalen des Patentanspruchs 5.These objects are achieved by a method according to the features of patent claim 1 and a device according to the features of patent claim 5.
Es gelingt durch eine kurzzeitige Beaufschlagung des Vlieses mit Wärmestrahlung durch das Transportband hindurch vor und/oder nach der Wärmezone, die Schmelzfasern an der Vliesoberfläche kurzfristig derart stark zu erhitzen, dass sie sich, unter der Hitzeeinwirkung zusammenziehen oder kräuseln und nicht mehr in Kontakt mit dem Transportband gelangen, wenn sie der Wärmebehandlung in der Heizzone ausgesetzt sind. Durch diese Massnahme kann einerseits eine Klebeverbindung des Vlieses mit dem Transportband verhindert werden und andererseits wird die Reinigung des Transportbandes zum Entfernen einzelner Schmelzfasern wesentlich vereinfacht.It succeeds by a brief exposure of the web with thermal radiation through the conveyor belt before and / or after the heat zone, the melt fibers on the nonwoven surface in the short term so to heat strongly so that they contract or curl under the action of heat and no longer come into contact with the conveyor belt when subjected to the heat treatment in the heating zone. By this measure, on the one hand, an adhesive bond of the web with the conveyor belt can be prevented and on the other hand, the cleaning of the conveyor belt for removing individual melt fibers is substantially simplified.
Anhand eines schematisch dargestellten Beispiels wird die Erfindung näher erläutert. Es zeigenBased on a schematically illustrated example, the invention will be explained in more detail. Show it
Figur 1 einen Vertikalschnitt durch eineFigure 1 is a vertical section through a
Wärmebehandlungsanläge für Vliesmaterial undHeat treatment facilities for nonwoven material and
Figur 2 ein vergrösserter Ausschnitt des Vliesmaterials in Figur 1 über der Wärmequelle.Figure 2 is an enlarged section of the nonwoven material in Figure 1 over the heat source.
In einem durch ein Rechteck schematisch dargestellten Bonding-Ofen 1 bekannter Bauart ist mindestens ein Transportband 3 , vorzugsweise ein aus gitterartigem Material hergestelltes Band, ersichtlich. Dieses wird um mehrere Umlenkrollen 5 geführt, wobei die Umlenkrollen 5 sich ausserhalb des Bonding-Ofens, zumindest aber ausserhalb einer im Bonding-Ofen 1 angeordneten Wärmezone 7 befinden. Die Wärmezone 7 kann eine Anzahl von Düsen umfassen, durch welche' heisse Luft durch das Transportband 3 hindurch zu einem Vliesmaterial 9 und durch dieses hindurchgeführt wird. Vorzugsweise findet oberhalb des Vliesmaterials 9, wo ein zusätzliches Transportband 3 angeordnet sein kann, eine Absaugung durch geeignet angeordnete Absaugdüsen statt. Die Beaufschlagung mit heisser Luft kann auch sektionsweise von oben nach unten und unten nach oben erfolgen (keine Darstellung) . Eingangsseitig und/oder ausgangsseitig der Wärmezone 7, vorzugsweise beabstandet zu dieser, ist unterhalb des Transportbandes 3 eine geeignete Wärmequelle 11 angeordnet. Die Wärmequelle 11 erstreckt sich über die gesamte Breite des Transportbandes bzw. des auf dem Transportband liegenden und von diesem geförderten Vliesmaterials 9.In a bonding furnace 1 of known design, shown schematically by a rectangle, at least one conveyor belt 3, preferably a belt made of latticed material, can be seen. This is guided around a plurality of deflection rollers 5, wherein the deflection rollers 5 are located outside the bonding furnace, but at least outside a heat zone 7 arranged in the bonding furnace 1. The heat zone 7 may comprise a number of nozzles, through which ' hot air through the conveyor belt 3 through to a nonwoven material 9 and through this is passed. Preferably, above the nonwoven material 9, where an additional conveyor belt 3 can be arranged, an extraction takes place by means of suitably arranged suction nozzles. The application of hot air can also be done in sections from top to bottom and bottom to top (no illustration). On the input side and / or output side of the heat zone 7, preferably spaced from this, a suitable heat source 11 is arranged below the conveyor belt 3. The heat source 11 extends over the entire width of the conveyor belt or of the nonwoven material 9 lying on the conveyor belt and conveyed by it.
Das Vliesmaterial 9 wird im beschriebenen Beispiel von der linken Seite der Figur 1 auf das Transportband 3 geleitet und es verlässt letzteres auf der rechten Seite. Mit einer oder beiden bezüglich deren Leistung einstellbaren Wärmequellen 11 kann eine hohe Temperatur erreicht werden und durch die Wärmestrahlung können die sich an der Oberfläche des Vliesmaterials 9 befindlichen Schmelzfasern, d.h. der dem Transportband zugekehrten Seite während des Passierens der Wärmequelle 11 kurzzeitig stark erwärmt werden. Durch die schockartige Erwärmung der Schmelzfasern ziehen sich diese zusammen und entfernen sich dadurch von der Oberseite des Transportbandes 3 in die Oberfläche des Vliesmaterials hinein. In der nachfolgenden, das Vliesmaterial 9 durchdringenden Wärmebehandlung liegen diese "zurückgezogenen" Schmelzfasern ausserhalb des Kontaktbereichs des Transportbandes 3 und es findet keine Verklebung mehr statt.The nonwoven material 9 is passed in the example described from the left side of Figure 1 on the conveyor belt 3 and it leaves the latter on the right side. With one or both with respect to their performance adjustable heat sources 11, a high temperature can be achieved and by the heat radiation located on the surface of the nonwoven material 9 melt fibers, ie the side facing the conveyor belt during the passage of the heat source 11 are briefly strongly heated. As a result of the shock-like heating of the melt fibers, they contract and thereby move away from the upper side of the conveyor belt 3 into the surface of the nonwoven material. In the following, the nonwoven material 9 penetrating Heat treatment are these "retracted" melt fibers outside the contact region of the conveyor belt 3 and there is no more bonding instead.
Die Wärmequelle 11 kann Strahlungswärme erzeugen oder es kann durch eine Schlitzdüse (nicht dargestellt) heisse Luft auf die Vliesoberfläche geblasen werden. Wird mit einer Schlitzdüse gearbeitet, so kann zusätzlich erreicht werden, dass das Vliesmaterial 9 während der schockartigen Wärmebehandlung leicht vom Transportband 3 abgehoben wird und die schmelzenden Fasern 13 beim Zusammenziehen das Band 3 nicht berühren.The heat source 11 may generate radiant heat, or hot air may be blown onto the nonwoven surface through a slot die (not shown). If a slot nozzle is used, it can additionally be achieved that the nonwoven material 9 is lifted slightly off the conveyor belt 3 during the shock-like heat treatment, and the melting fibers 13 do not touch the belt 3 during contraction.
Erfolgt die kurzzeitige Erhitzung durch die Wärmequelle 11 am Ausgang des Bonding-Ofens 1 bzw. nach der Wärmezone, so können allenfalls bereits entstandene Verbindungen zwischen Schmelzfasern und Oberfläche des Transportbandes 1 durch erneutes Aufschmelzen gelöst werden. Beim Aufschmelzen tendieren die Schmelzfasern 13, wiederum sich zusammenzuziehen und folglich gegen das Vliesmaterial 9 zu wandern.If the short-term heating by the heat source 11 at the output of the bonding furnace 1 or after the heat zone, so may already be achieved by reflowing already formed compounds between melt fibers and the surface of the conveyor belt 1. Upon reflow, the fusible fibers 13 tend to contract again and thus migrate toward the nonwoven material 9.
Sind ein- und ausgangsseitig der Wärmezone 7 einstellbare Wärmequellen 11 für die kurzfristige Erhitzung der Vliesmaterial-Oberfläche 11 angeordnet, so wird die Aufschmelzung der oberflächennahen Schmelzfasern 9 zusätzlich begünstigt. In Figur 2 ist das Vliesmaterial 9 über einer Wärmequelle 11 vergrössert dargestellt. Mit Bezugszeichen 15 sind die feinen, vliesbildenden nicht schmelzenden Fasern bezeichnet; mit Bezugszeichen 13 Schmelzfasern, d.h. Fasern 15 aus einem niedrig schmelzenden Material, wie Polypropylen, welches der Bindung der nicht schmelzenden Fasern untereinander dient . Vor der schockartigen Wärmebehandlung mit hoher Temperatur über der Wärmequelle 11 liegen die Schmelzfasern 13 fein verteilt im Vliesmaterial 9. Einzelne Fasern 13 und 15 ragen über die Oberflächen des Vliesmaterials 9 hinaus. Sobald sie jedoch den Bereich der Wärmequelle 11 passiert haben, haben sich die Schmelzfasern 13 durch den Wärmeschock zusammengezogen und überragen nun die Oberfläche des Vliesmaterials 9 nicht mehr (rechte Seite von Figur 2) . If input and output side of the heat zone 7 adjustable heat sources 11 are arranged for the short-term heating of the nonwoven material surface 11, the melting of the near-surface melt fibers 9 is additionally favored. In FIG. 2, the nonwoven material 9 is shown enlarged over a heat source 11. Reference numeral 15 denotes the fine non-woven non-melting fibers; with reference numeral 13 melt fibers, ie fibers 15 of a low-melting material, such as polypropylene, which serves to bond the non-melting fibers with each other. Prior to the high temperature shock-like heat treatment over the heat source 11, the fusible fibers 13 are finely dispersed in the nonwoven material 9. Individual fibers 13 and 15 protrude beyond the surfaces of the nonwoven material 9. However, as soon as they have passed the region of the heat source 11, the melt fibers 13 have contracted due to the thermal shock and no longer project beyond the surface of the nonwoven material 9 (right side of FIG. 2).

Claims

Patentansprüche claims
1. Verfahren zum Verhindern des Verklebens von Vliesmaterial (9) beim Bonding-Prozess mit Transportbändern (3) im Bonding-Ofen (1) , bei dem das Vliesmaterial (9) auf mindestens einem TransportbandA method for preventing the bonding of nonwoven material (9) in the bonding process with conveyor belts (3) in the bonding furnace (1), wherein the nonwoven material (9) on at least one conveyor belt
(3) durch eine Wärmezone (7) im Bonding-Ofen (1) geführt wird, dadurch gekennzeichnet, dass das Vliesmaterial (9) an mindestens einer Stelle vor und/oder nach der Wärmezone (7) kurzzeitig einer schockartigen Erhitzung durch eine Wärmequelle (11) ausgesetzt wird.(3) through a heat zone (7) in the bonding furnace (1), characterized in that the nonwoven material (9) at least one point before and / or after the heat zone (7) briefly a shock-like heating by a heat source ( 11) is suspended.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Erhitzung durch das Transportband (3) hindurch erfolgt.2. The method according to claim 1, characterized in that the heating takes place through the conveyor belt (3).
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Wärmequelle (11) ausserhalb der Wärmezone (7) des Bonding-Ofens (1) angeordnet ist.3. The method according to claim 2, characterized in that the heat source (11) outside the heat zone (7) of the bonding furnace (1) is arranged.
4. Verfahren nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, dass die Stärke der Wärmestrahlung der Wärmequelle (11) einstellbar ist. 4. The method according to any one of claims 1 to 3, characterized in that the strength of the heat radiation of the heat source (11) is adjustable.
5. Vorrichtung zum Verhindern des Verklebens von Vliesmaterial (9) beim Bonding-Prozess an den Transportbändern (3) im Bonding-Ofen (1) , dadurch gekennzeichnet, dass vor und/oder nach einer Wärmezone (7) im Bonding-Ofen (1) eine Wärmequelle (11) zum kurzzeitigen Erhitzen der Oberfläche des Vliesmaterials (9) auf der dem Transportband (3) zugekehrten Fläche angeordnet ist.5. A device for preventing the bonding of nonwoven material (9) in the bonding process to the conveyor belts (3) in the bonding furnace (1), characterized in that before and / or after a heat zone (7) in the bonding furnace (1 ) a heat source (11) for briefly heating the surface of the nonwoven material (9) on the conveyor belt (3) facing surface is arranged.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Wärmequelle (11) unter dem Transportband (3) angeordnet ist.6. Apparatus according to claim 5, characterized in that the heat source (11) under the conveyor belt (3) is arranged.
7. Vorrichtung nach einem der Ansprüche 5 oder 6 , dadurch gekennzeichnet, dass die Wärmequelle (11) Strahlungswärme oder Heissluft erzeugt.7. Device according to one of claims 5 or 6, characterized in that the heat source (11) generates radiant heat or hot air.
8. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Wärmequelle (11) quer zur Transportrichtung des mindestens einen Transportbandes8. Device according to one of claims 5 to 7, characterized in that the heat source (11) transversely to the transport direction of the at least one conveyor belt
(3) angeordnet ist. (3) is arranged.
EP07816194A 2006-11-03 2007-10-18 Process for preventing sticking of fibrous nonwoven web material in the bonding operation and apparatus for preventing sticking of fibrous nonwoven web material in the bonding operation Ceased EP2087159B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH17512006 2006-11-03
PCT/CH2007/000511 WO2008052372A1 (en) 2006-11-03 2007-10-18 Process for preventing sticking of fibrous nonwoven web material in the bonding operation and apparatus for preventing sticking of fibrous nonwoven web material in the bonding operation

Publications (2)

Publication Number Publication Date
EP2087159A1 true EP2087159A1 (en) 2009-08-12
EP2087159B1 EP2087159B1 (en) 2010-12-01

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Application Number Title Priority Date Filing Date
EP07816194A Ceased EP2087159B1 (en) 2006-11-03 2007-10-18 Process for preventing sticking of fibrous nonwoven web material in the bonding operation and apparatus for preventing sticking of fibrous nonwoven web material in the bonding operation

Country Status (3)

Country Link
EP (1) EP2087159B1 (en)
DE (1) DE502007005875D1 (en)
WO (1) WO2008052372A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016122965A1 (en) 2016-11-29 2018-05-30 Autefa Solutions Germany Gmbh Textile fiber drying

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4551378A (en) * 1984-07-11 1985-11-05 Minnesota Mining And Manufacturing Company Nonwoven thermal insulating stretch fabric and method for producing same
EP0171806A3 (en) * 1984-08-16 1987-06-16 Chicopee An entangled nonwoven fabric including bicomponent fibers and the method of making same
DE19740338A1 (en) * 1997-09-13 1999-03-18 Truetzschler Gmbh & Co Kg Device to form nonwovens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008052372A1 *

Also Published As

Publication number Publication date
WO2008052372A1 (en) 2008-05-08
EP2087159B1 (en) 2010-12-01
DE502007005875D1 (en) 2011-01-13

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