EP0730682B1 - Multi-layered needle punched nonwoven fabric, production and uses thereof - Google Patents
Multi-layered needle punched nonwoven fabric, production and uses thereof Download PDFInfo
- Publication number
- EP0730682B1 EP0730682B1 EP95903268A EP95903268A EP0730682B1 EP 0730682 B1 EP0730682 B1 EP 0730682B1 EP 95903268 A EP95903268 A EP 95903268A EP 95903268 A EP95903268 A EP 95903268A EP 0730682 B1 EP0730682 B1 EP 0730682B1
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- EP
- European Patent Office
- Prior art keywords
- staple fibre
- nonwoven fabric
- needling
- needle punched
- punched 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.)
- Expired - Lifetime
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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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of 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
- 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
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed 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
- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered 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
- D04H1/54—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
- D04H1/559—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 the fibres being within layered 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
- D04H13/00—Other non-woven fabrics
Definitions
- the invention relates to a method for producing a multi-layer needle punch, in which a strength member with high tensile strength and low elongation Needling connected to at least one staple fiber layer and after needling a heat treatment and one Compression is subjected to and as a reinforcement one before needling with the staple fiber layer or stretched staple fiber fleece from the staple fiber layers Bicomponent fibers are used.
- a method of the present type is in the older, however, according to the present patent application published WO 94/17234.
- the fleece after This font is primarily intended for a self-supporting, rigid, thermally deformable body part use Find.
- Needle fleeces have to be high for some applications Have tensile strength and low elongation, for example then when used as belt material for conveyor belts should be used.
- it is known from DE-C-28 42 837, as a reinforcement between two layers of needle fleece Layer of essentially parallel textile yarns to include.
- Such a multi-layer needle punch achieves the desired tensile strength and low Stretching, however, has the disadvantage that in the textile yarns and especially the fabrics made from it There are tensions caused by the needling process still be promoted and fixed sustainably.
- This Tensions lead when using the staple fiber fleece cause the material to vary across its width long. This causes, for example, in use of the staple fiber fleece as a conveyor belt of the conveyor belt.
- the problem underlying the invention is a method to develop the type mentioned at the beginning with which a multilayer needle fleece is created, which has a high tear resistance with low elongation and especially is inexpensive to carry out.
- Bicomponent fibers are also under the name "Binding fibers" known and have been around for over 30 years used to produce fleece slugs.
- Bicomponent fibers are fibers that consist of at least two Melting point - and thus also in the chemical composition - Different polymers are built up.
- By stretching the staple fiber fleece from bicomponent fibers there is an alignment of the staple fibers, which is fixed by needling.
- the connection of the individual staple fibers by melting their low-melting Components occurs through the invention Heat treatment after needling with the needle fleece on.
- the compression carried out at the same time leads to high strength towards the by stretching the orientation of the bicomponent fibers.
- the needle fleece produced has a comparably high strength and low stretch like a needle punch with a Fabrics or textile yarn layers as reinforcements, points however, no material tension on it, so it's not too irregular deformations comes. That with the procedure Needle fleece produced according to the invention has clearly better bending properties and higher porosity compared to staple fiber nonwovens with support fabric because it the support layer is not a rigid mass, but a composite made up of individual fibers acts. Another advantage is the controllable Stiffness through temperature control of the heterogeneous Staple fiber fleece during heat treatment.
- the method according to the invention can be carried out automatically and is very inexpensive. At the same time allowed it is the production of heterogeneous staple fiber nonwovens different bending flexibility by changing the Temperature or heat treatment time at the end of the Procedure.
- the material consumption of binder solution is special low because only after heat treatment the staple fiber layer or the staple fiber layers be impregnated with a binder solution. At the same time This results in a particularly high degree of influence the flexibility of the material.
- a particularly high strength is achieved if according to another development of the invention, several layers of the reinforcement made of bicomponent fibers and needled together with the staple fiber fleece become.
- Another advantageous use is when one the needle fleece produced by the method according to the invention used as a filter medium.
- the generated by the process Needle fleece is characterized by a filter efficiency, that cannot be achieved with a tissue.
- FIG. 1 shows one between two staple fiber layers 1, 2 Strength member 3, which is a staple fiber fleece deals from bicomponent fibers.
- the connection the staple fiber layers 1, 2 with the reinforcement 3 is done in the usual way by needling, what on three Places, for example at 4, by a changed fiber orientation can be seen. Before needling, the Strength members 3 stretched.
- the staple fiber fleece is subjected to a heat treatment subjected to simultaneous compression. This leads to a connection of the bicomponent fibers, because the outer areas of the bicomponent fibers begin to melt through the heat. That on this Material produced in this way is shown in FIG. 2. It has a smaller thickness than in the manufacturing stage shown in Figure 1.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Medicinal Preparation (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines mehrlagigen Nadelvlieses, bei dem ein Festigkeitsträger mit hoher Zugfestigkeit und geringer Dehnung durch Vernadeln mit zumindest einer Stapelfaserlage verbunden und nach dem Vernadeln einer Wärmebehandlung und einer Verdichtung unterzogen wird und bei dem als Festigkeitsträger ein vor dem Vernadeln mit der Stapelfaserlage oder den Stapelfaserlagen verstrecktes Stapelfaservlies aus Bikomponentenfasern verwendet wird.The invention relates to a method for producing a multi-layer needle punch, in which a strength member with high tensile strength and low elongation Needling connected to at least one staple fiber layer and after needling a heat treatment and one Compression is subjected to and as a reinforcement one before needling with the staple fiber layer or stretched staple fiber fleece from the staple fiber layers Bicomponent fibers are used.
Ein Verfahren der vorliegenden Art ist in der prioritätsälteren, jedoch nach der vorliegenden Patentanmeldung veröffentlichten WO 94/17234 beschrieben. Das Vlies nach dieser Schrift soll primär für ein selbsttragendes, steifes, thermisch verformbares Karosserieteil Verwendung finden.A method of the present type is in the older, however, according to the present patent application published WO 94/17234. The fleece after This font is primarily intended for a self-supporting, rigid, thermally deformable body part use Find.
Nadelvliese müssen für manche Anwendungsfälle eine hohe Reißfestigkeit und geringe Dehnung aufweisen, beispielsweise dann, wenn sie als Bandmaterial für Förderbänder verwendet werden sollen. Zur Erzeugung einer ausreichend hohen Festigkeit ist es durch die DE-C-28 42 837 bekannt, als Festigkeitsträger zwischen zwei Nadelvlieslagen eine Lage aus im wesentlichen parallel verlaufenden Textilgarnen einzuschließen. Ein solches mehrlagiges Nadelvlies erreicht zwar die angestrebte Zugfestigkeit und geringe Dehnung, hat jedoch den Nachteil, dass in den Textilgarnen und insbesondere den daraus hergestellten Geweben Spannungen vorhanden sind, welche durch den Nadelungsprozess noch gefördert und nachhaltig fixiert werden. Diese Spannungen führen beim Einsatz des Stapelfaservlieses dazu, dass sich das Material über seine Breite unterschiedlich längt. Das verursacht beispielsweise bei Verwendung des Stapelfaservlieses als Förderband ein Verlaufen des Förderbandes.Needle fleeces have to be high for some applications Have tensile strength and low elongation, for example then when used as belt material for conveyor belts should be used. To generate a sufficient high strength, it is known from DE-C-28 42 837, as a reinforcement between two layers of needle fleece Layer of essentially parallel textile yarns to include. Such a multi-layer needle punch achieves the desired tensile strength and low Stretching, however, has the disadvantage that in the textile yarns and especially the fabrics made from it There are tensions caused by the needling process still be promoted and fixed sustainably. This Tensions lead when using the staple fiber fleece cause the material to vary across its width long. This causes, for example, in use of the staple fiber fleece as a conveyor belt of the conveyor belt.
Durch den Nadelungsprozess besteht desweiteren die Gefahr einer Schädigung der Textilgarne. Eine solche Schädigung führt zu unterschiedlichen Festigkeitsverlusten des Festigkeitsträgers.There is also a risk from the needling process damage to the textile yarns. Such damage leads to different strength losses of the reinforcement.
Zur Vermeidung von unterschiedlichen Materialspannungen ist es durch die DE-A-41 26 117 bei einem Nadelvlies der eingangs genannten Art auch schon bekannt, als Festigkeitsträger statt Textilgarne ein dehnungsarmes Spinnvlies zu verwenden. Mit einem solchen Spinnvlies lässt sich jedoch längst nicht die Festigkeit erreichen wie mit Textilgarnen. Man kann zwar für Förderbänder diese Festigkeit erhöhen, indem man das Nadelvlies vollständig mit einer Binderlösung wie zum Beispiel Latex durchtränkt, was jedoch zu einer wesentlichen Erhöhung der Herstellungskosten des Materials führt.To avoid different material tensions it is by DE-A-41 26 117 with a needle fleece type already known at the outset, as a reinforcement instead of textile yarns, a low-stretch spunbond to use. With such a spunbonded fabric However, the strength is far from reaching as with Textile yarns. You can use this strength for conveyor belts increase by completely using the needle punch soaked in a binder solution such as latex, however, resulting in a substantial increase in manufacturing costs of the material leads.
Der Erfindung liegt das Problem zugrunde, ein Verfahren der eingangs genannten Art zu entwickeln, mit dem ein mehrlagiges Nadelvlies entsteht, welches eine hohe Reißfestigkeit bei geringer Dehnung hat und das besonders kostengünstig durchführbar ist.The problem underlying the invention is a method to develop the type mentioned at the beginning with which a multilayer needle fleece is created, which has a high tear resistance with low elongation and especially is inexpensive to carry out.
Dieses Problem wird erfindungsgemäß dadurch gelöst, dass die Wärmebehandlung und Verdichtung des Nadelvlieses nach dem Vernadeln des Festigkeitsträgers mit der Stapelfaserlage oder den Stapelfaserlagen gleichzeitig erfolgt und dass nach der Wärmebehandlung ausschließlich die Stapelfaserlage oder die Stapelfaserlagen mit einer Binderlösung imprägniert werden.This problem is solved according to the invention in that the heat treatment and compaction of the needle fleece the needling of the reinforcement with the staple fiber layer or the staple fiber layers takes place simultaneously and that after heat treatment exclusively the staple fiber layer or the staple fiber layers with a Binder solution are impregnated.
Bikomponentenfasern sind auch unter der Bezeichnung "Bindefasern" bekannt und werden schon seit über 30 Jahren zur Erzeugung von Vliesstotten eingesetzt. Bikomponentenfasern sind Fasern, die aus zwei wenigstens im Schmelzpunkt - und damit auch in der chemischen Zusammensetzung - verschiedenen Polymeren aufgebaut sind. Durch das Verstrecken des Stapelfaservlieses aus Bikomponentenfasern kommt es zu einer Ausrichtung der Stapelfasern, die durch das Vernadeln fixiert wird. Die Verbindung der einzelnen Stapelfasern durch Schmelzen ihrer niedrigschmelzenden Bestandteile tritt durch die erfindungsgemäße Wärmebehandlung nach dem Vernadeln mit dem Nadelvlies ein. Die dabei gleichzeitig vorgenommene Verdichtung führt zu einer hohen Festigkeit in Richtung der durch das Verstrecken festgelegten Orientierung der Bikomponentenfasern. Das mit dem erfindungsgemäßen Verfahren erzeugte Nadelvlies hat eine vergleichbar hohe Festigkeit und geringe Dehnung wie ein Nadelvlies mit einem Gewebe oder Textilgarnlagen als Festigkeitsträger, weist jedoch keine Materialspannungen auf, so dass es nicht zu ungleichförmigen Verformungen kommt. Das mit dem Verfahren nach der Erfindung hergestellte Nadelvlies hat deutlich bessere Biegeeigenschaften und eine höhere Porösität im Vergleich zu Stapelfaservliesen mit Stützgewebe, da es sich bei der Trägerschicht nicht um eine starre Masse, sondern um einen aus Einzelfasern aufgebauten Verbund handelt. Ein weiterer Vorteil liegt in der regelbaren Steifigkeit durch Temperatursteuerung des heterogenen Stapelfaservlieses bei der Wärmebehandlung.Bicomponent fibers are also under the name "Binding fibers" known and have been around for over 30 years used to produce fleece slugs. Bicomponent fibers are fibers that consist of at least two Melting point - and thus also in the chemical composition - Different polymers are built up. By stretching the staple fiber fleece from bicomponent fibers there is an alignment of the staple fibers, which is fixed by needling. The connection of the individual staple fibers by melting their low-melting Components occurs through the invention Heat treatment after needling with the needle fleece on. The compression carried out at the same time leads to high strength towards the by stretching the orientation of the bicomponent fibers. That with the method according to the invention The needle fleece produced has a comparably high strength and low stretch like a needle punch with a Fabrics or textile yarn layers as reinforcements, points however, no material tension on it, so it's not too irregular deformations comes. That with the procedure Needle fleece produced according to the invention has clearly better bending properties and higher porosity compared to staple fiber nonwovens with support fabric because it the support layer is not a rigid mass, but a composite made up of individual fibers acts. Another advantage is the controllable Stiffness through temperature control of the heterogeneous Staple fiber fleece during heat treatment.
Da bei dem erfindungsgemäßen Verfahren durch das Stapelfaservlies aus Bikomponentenfasern bereits eine im Regelfall ausreichend hohe Reißfestigkeit und geringe Dehnung entsteht, genügt es, wenn ausschließlich die Stapelfaserlage oder die Stapelfaserlagen mit einer Binderlösung imprägniert sind. Dadurch kommt es zu einer Ersparnis an Bindermaterial. Eine solche Imprägnierung sorgt beispielsweise für eine ausreichend hohe Abriebfestigkeit und Elastizität des Materials.Since in the method according to the invention through the staple fiber fleece usually made of bicomponent fibers sufficiently high tensile strength and low elongation arises, it is sufficient if only the staple fiber layer or impregnated the staple fiber layers with a binder solution are. This leads to savings Binder material. Such impregnation provides, for example for a sufficiently high abrasion resistance and elasticity of the material.
Das erfindungsgemäße Verfahren kann automatisch durchgeführt werden und ist sehr kostengünstig. Zugleich erlaubt es die Herstellung von heterogenen Stapelfaservliesen unterschiedlicher Biegeflexibilität durch Verändern der Temperatur oder Wärmebehandlungsdauer am Ende des Verfahrens. Der Materialverbrauch an Binderlösung ist besonders gering, weil nach der Wärmebehandlung ausschließlich die Stapelfaserlage oder die Stapelfaserlagen mit einer Binderlösung imprägniert werden. Gleichzeitig ergibt sich hierdurch eine besonders hohe Beeinflussbarkeit der Biegeflexibilität des Materials.The method according to the invention can be carried out automatically and is very inexpensive. At the same time allowed it is the production of heterogeneous staple fiber nonwovens different bending flexibility by changing the Temperature or heat treatment time at the end of the Procedure. The material consumption of binder solution is special low because only after heat treatment the staple fiber layer or the staple fiber layers be impregnated with a binder solution. At the same time This results in a particularly high degree of influence the flexibility of the material.
Eine besonders hohe Festigkeit erreicht man, wenn gemäß einer anderen Weiterbildung der Erfindung mehrere Lagen des Festigkeitsträgers aus Bikomponentenfasern aufeinandergelegt und mit dem Stapelfaservlies gemeinsam vernadelt werden.A particularly high strength is achieved if according to another development of the invention, several layers of the reinforcement made of bicomponent fibers and needled together with the staple fiber fleece become.
Die Eigenschaften des nach dem erfindungsgemäßen Verfahren hergestellten Stapelfaservlieses machen sich besonders vorteilhaft bemerkbar, wenn man das Material als Bandmaterial für Förderbänder verwendet. Insbesondere macht sich bei Bandmaterial gegenüber herkömmlichen Stapelfaservliesen die sehr gleichmäßige Verteilung von Zugkräften über die ganze Breite des Bandes bemerkbar, was zu einem problemlosen Geradlauf des Bandes führt. The properties of the process according to the invention produced staple fiber fleece make themselves special advantageous noticeable if you consider the material as Belt material used for conveyor belts. In particular makes itself better with tape material compared to conventional staple fiber nonwovens the very even distribution of Tensile forces noticeable across the entire width of the belt, which leads to problem-free straight running of the belt.
Eine andere vorteilhafte Verwendung liegt vor, wenn man das nach dem erfindungsgemäßen Verfahren hergestellte Nadelvlies als Filtermedium einsetzt. Hierbei ist besonders vorteilhaft, dass man durch Steuerung der Wärmebehandlung und Verdichtung die Porösität des Nadelvlieses stufenlos einstellen kann. Das nach dem Verfahren erzeugte Nadelvlies zeichnet sich durch eine Filtereffizienz aus, die nicht mit einem Gewebe zu erreichen ist.Another advantageous use is when one the needle fleece produced by the method according to the invention used as a filter medium. Here is special advantageous that you can by controlling the heat treatment and compression the porosity of the needle fleece continuously can adjust. The generated by the process Needle fleece is characterized by a filter efficiency, that cannot be achieved with a tissue.
Zur weiteren Verdeutlichung der Erfindung wird nachfolgend auf die Zeichnung Bezug genommen. Diese zeigt in
- Fig.1
- einen Schnitt durch ein nach dem erfindungsgemäßen Verfahren hergestelltes Nadelvlies in einem noch unvollendeten Fertigungszustand,
- Fig.2
- einen Schnitt durch das fertige Nadelvlies,
- Fig.3
- einen Schnitt durch eine ebenfalls mit dem erfindungsgemäßen Verfahren hergestelltes, abgewandeltes Nadelvlies.
- Fig. 1
- 3 shows a section through a needle punched nonwoven fabric produced by the method according to the invention in an as yet unfinished production state,
- Fig. 2
- a cut through the finished needle fleece,
- Fig. 3
- a section through a modified needle fleece also produced with the inventive method.
Die Figur 1 zeigt zwischen zwei Stapelfaserlagen 1, 2 einen
Festigkeitsträger 3, bei dem es sich um ein Stapelfaservlies
aus Bikomponentenfasern handelt. Die Verbindung
der Stapelfaserlagen 1, 2 mit dem Festigkeitsträger
3 erfolgt auf übliche Weise durch Vernadeln, was an drei
Stellen, beispielsweise bei 4, durch einen geänderten Faserverlauf
zu erkennen ist. Vor dem Vernadeln wurde der
Festigkeitsträger 3 verstreckt.FIG. 1 shows one between two
Nach dem Vernadeln wird das Stapelfaservlies einer Wärmebehandlung unter gleichzeitiger Verdichtung unterzogen. Dadurch kommt es zu einem Verbinden der Bikomponentenfasern, weil die äußeren Bereiche der Bikomponentenfasern durch die Wärme zu schmelzen beginnen. Das auf diese Weise entstehende Material ist in Figur 2 dargestellt. Es hat infolge der Verdichtung eine geringere Dicke als in der in Figur 1 gezeigten Fertigungsstufe.After needling, the staple fiber fleece is subjected to a heat treatment subjected to simultaneous compression. This leads to a connection of the bicomponent fibers, because the outer areas of the bicomponent fibers begin to melt through the heat. That on this Material produced in this way is shown in FIG. 2. It has a smaller thickness than in the manufacturing stage shown in Figure 1.
Wenn man das Material als Bandmaterial für Förderbänder
benutzen will, dann tränkt man bei dem in Figur 2 gezeigten
Material die Stapelfaserlagen 1 und 2, jedoch nicht
den Festigkeitsträger 3 mit einer Binderlösung, beispielsweise
Latex, um den in Figur 3 gezeigten Zustand
des Materials zu erreichen.If you use the material as a belt material for conveyor belts
wants to use, then soak in the one shown in Figure 2
Material of the
Claims (4)
- Process for the manufacture of a multilayered needle punched nonwoven fabric, in which a strong ply with high tensile strength and low stretch is combined with at least one staple fibre layer by needling and is subjected after needling to heat treatment and compression, and in which a nonwoven staple fibre fabric made of bicomponent fibres drawn with the staple fibre layer or layers before needling is used as the strong ply, characterized in that the heat treatment and compression of the needle punched nonwoven fabric are applied simultaneously after the needling of the strong ply with the staple fibre layer or layers, and in that, after the heat treatment, impregnation with a binder solution is applied to the staple fibre layer or layers only.
- Process according to Claim 1, characterized in that several layers of the strong ply of bicomponent fibres are laid on one another and needled together with the staple fibre fabric.
- Use of the multilayered needle punched nonwoven fabric manufactured in accordance with Claim 1 or Claim 2 as belt material for conveyor belts.
- Use of the multilayered needle punched nonwoven fabric manufactured in accordance with Claim 1 or Claim 2 as filter medium.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4339709 | 1993-11-22 | ||
| DE4339709A DE4339709A1 (en) | 1993-11-22 | 1993-11-22 | Multi-layer needle punched nonwoven, process for its manufacture and use |
| PCT/EP1994/003863 WO1995014803A1 (en) | 1993-11-22 | 1994-11-22 | Multi-layered needle punched nonwoven fabric, production and uses thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0730682A1 EP0730682A1 (en) | 1996-09-11 |
| EP0730682B1 true EP0730682B1 (en) | 2000-02-09 |
Family
ID=6503113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95903268A Expired - Lifetime EP0730682B1 (en) | 1993-11-22 | 1994-11-22 | Multi-layered needle punched nonwoven fabric, production and uses thereof |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0730682B1 (en) |
| AT (1) | ATE189713T1 (en) |
| DE (2) | DE4339709A1 (en) |
| ES (1) | ES2144602T3 (en) |
| PT (1) | PT730682E (en) |
| WO (1) | WO1995014803A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19543975C1 (en) * | 1995-11-25 | 1997-03-20 | Forbo Int Sa | Conveyor belt with textile running surface |
| AT405533B (en) * | 1996-12-23 | 1999-09-27 | Asota Gmbh | DOUBLE-LAYER NEEDLE FILLED |
| US6412154B1 (en) | 1999-07-30 | 2002-07-02 | Johns Manville International, Inc. | Hydrodynamically bounded carrier webs and use thereof |
| DE10151411B4 (en) | 2001-10-18 | 2006-09-14 | Johns Manville Europe Gmbh | Laminate with improved properties |
| DE102006045069A1 (en) * | 2006-09-21 | 2008-04-03 | Sandler Ag | Multilayer nonwoven composite material and method for producing a multilayer nonwoven composite material |
| DE102009007891A1 (en) | 2009-02-07 | 2010-08-12 | Willsingh Wilson | Resonance sound absorber in multilayer design |
| DE102017123283A1 (en) * | 2017-10-06 | 2019-04-11 | J.H. Ziegler Gmbh | Device, in particular fiber composite production device |
| CN113478867B (en) * | 2021-08-06 | 2022-11-08 | 安徽纳赫智能科技有限公司 | Multi-station stamping machining mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS167676B1 (en) * | 1973-11-15 | 1976-04-29 | ||
| US4154335A (en) * | 1977-11-04 | 1979-05-15 | Albany International Corp. | Conveyor belting and method of manufacture |
| US4157752A (en) * | 1978-04-06 | 1979-06-12 | Albany International Corp. | Impression surface conveyor belting and method of manufacture |
| US4444305A (en) * | 1982-02-16 | 1984-04-24 | Globe International Inc. | Conveyor belting for handling bakery goods |
| JPS6182819A (en) * | 1984-09-27 | 1986-04-26 | Japan Vilene Co Ltd | Filter medium |
| DE3435643A1 (en) * | 1984-09-28 | 1986-04-10 | Hoechst Ag, 6230 Frankfurt | LAMINATE |
| US4726978A (en) * | 1985-10-23 | 1988-02-23 | Siebe Gorman & Company Limited | Charcoal fabric needled to supporting fabrics |
| SU1722865A1 (en) * | 1990-03-26 | 1992-03-30 | Всесоюзный Научно-Исследовательский Институт Резино-Технического Машиностроения | Device for production of multiple-layer belts |
| SU1766462A1 (en) * | 1990-05-28 | 1992-10-07 | Волгоградский Политехнический Институт | Filter medium |
| FR2670510A1 (en) * | 1990-12-12 | 1992-06-19 | Valeo | Method of producing a material based on reinforced elastomer, as well as a reinforced elastomer material obtained in particular by this method |
| DE4126117C2 (en) * | 1991-04-08 | 1994-04-07 | Lohmann Gmbh & Co Kg | Strength members for conveyor belts |
| DE4114952A1 (en) * | 1991-05-08 | 1992-11-12 | Akzo Nv | Nonwoven material for use as filter fabric, etc. - has two layers consisting of spun-bounded or nonwoven material on which carded staple mat is placed |
| FR2700782B1 (en) * | 1993-01-26 | 1995-04-14 | Libeltex Nv Sa | Method of manufacturing a nonwoven and nonwoven obtained by this process. |
| DE9301950U1 (en) * | 1993-02-11 | 1993-04-01 | Airtex Filter Gmbh, 7859 Efringen-Kirchen, De | |
| DE9304463U1 (en) * | 1993-03-24 | 1993-06-09 | Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De | |
| FR2705697B1 (en) * | 1993-05-26 | 1995-08-04 | Peaudouce | Composite nonwoven material, manufacturing process and its application to any absorbent hygiene article. |
-
1993
- 1993-11-22 DE DE4339709A patent/DE4339709A1/en not_active Withdrawn
-
1994
- 1994-11-22 EP EP95903268A patent/EP0730682B1/en not_active Expired - Lifetime
- 1994-11-22 DE DE59409147T patent/DE59409147D1/en not_active Expired - Fee Related
- 1994-11-22 PT PT95903268T patent/PT730682E/en unknown
- 1994-11-22 ES ES95903268T patent/ES2144602T3/en not_active Expired - Lifetime
- 1994-11-22 WO PCT/EP1994/003863 patent/WO1995014803A1/en active IP Right Grant
- 1994-11-22 AT AT95903268T patent/ATE189713T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ES2144602T3 (en) | 2000-06-16 |
| DE4339709A1 (en) | 1995-05-24 |
| EP0730682A1 (en) | 1996-09-11 |
| DE59409147D1 (en) | 2000-03-16 |
| PT730682E (en) | 2000-07-31 |
| ATE189713T1 (en) | 2000-02-15 |
| WO1995014803A1 (en) | 1995-06-01 |
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