EP0300176A2 - Band containing non-woven fabric, for drive and conveyor belts - Google Patents

Band containing non-woven fabric, for drive and conveyor belts Download PDF

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Publication number
EP0300176A2
EP0300176A2 EP88108804A EP88108804A EP0300176A2 EP 0300176 A2 EP0300176 A2 EP 0300176A2 EP 88108804 A EP88108804 A EP 88108804A EP 88108804 A EP88108804 A EP 88108804A EP 0300176 A2 EP0300176 A2 EP 0300176A2
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EP
European Patent Office
Prior art keywords
fibers
conveyor belts
drive
woven fabric
nonwoven
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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
EP88108804A
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German (de)
French (fr)
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EP0300176A3 (en
EP0300176B1 (en
Inventor
Manfred Föhst
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Lohmann GmbH and Co KG
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Lohmann GmbH and Co KG
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Priority to AT88108804T priority Critical patent/ATE71051T1/en
Publication of EP0300176A2 publication Critical patent/EP0300176A2/en
Publication of EP0300176A3 publication Critical patent/EP0300176A3/en
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Publication of EP0300176B1 publication Critical patent/EP0300176B1/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
    • D04H1/40—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
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon 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
    • D04H1/42—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
    • 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
    • D04H1/4209—Inorganic fibres
    • D04H1/4234—Metal 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
    • D04H1/42—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
    • 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
    • D04H1/44—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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • 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 belt with nonwoven fabric for drive and drive belts, conveyor and conveyor belts.
  • Driving and driving belts, conveyor belts and conveyor belts are manufactured using nonwovens, among other things, which have the least possible stretch and possibly a certain elasticity in order to avoid elongation of the conveyor belt during its use and the consequent re-tensioning.
  • DE-OS 20 16 403 it was proposed to use a base fabric for tufting carpets and needle-punched nonwovens to avoid static charging of carpets, which has filament yarns or fiber yarns from a fiber mixture with metal fibers or metallized fibers.
  • Conductive cloths made of a nonwoven with a metal fiber content for filter purposes were described in "Textile Institute and Industry", 7 , 1972, p.199.
  • nonwovens are used which were not subject to any special requirements with regard to resistance to linear expansion and are not suitable for conveyor belts.
  • the object is achieved according to the invention by a strip material having a nonwoven, in which the fiber mixture of the nonwoven has approximately 1 to 10% by weight of electrically conductive fibers.
  • nonwovens can be used as fiber nonwovens, for example needled nonwovens, random fiber nonwovens or the like.
  • the fiber mixture of the nonwoven fabric can have synthetic and / or natural and / or regenerated fibers, such as, for example, polyester, polyamide, polypropylene, polyacrylic, cotton, coconut, rayon fibers or the like.
  • the tape has one or more high-strength, low-stretch yarns, filaments, fabrics or scrims made of synthetic and / or natural and / or regenerated fibers.
  • Suitable fibers can include polyester, polyamide, polypropylene, wool, polyaramid, glass and ceramic fibers or combinations thereof.
  • Those which have at least one metal or elemental carbon can be used as electrically conductive fibers.
  • Steel fibers or copper fibers are suitable for this purpose, but it is also possible to use metallized, for example copper-plated or silver-plated threads.
  • Carbon here means conductive carbon modifications, such as graphite whiskers.
  • steel fibers with a titer of 0.8-18 dtex, preferably 3-10 dtex and a staple length of 20-80 mm have proven to be advantageous for these purposes.
  • the surface resistance of the nonwoven material at 100 V voltage is 10-2 to 108, preferably 104 to 106 ohms.
  • Hydrophobic binders such as nitrile-butadiene rubber and / or styrene-butadiene rubber latex, can be used.
  • a conductive nonwoven for drive belts, conveyor belts and conveyor belts is preferably made of a mechanically needled synthetic fiber fleece with incorporated conductive fibers and a binder with which the base nonwoven is impregnated.
  • conductive fibers are added to the nonwoven, then the mechanically consolidated nonwoven is impregnated with a binder solution and then dried at a temperature of 100 ° C.
  • the fiber mixture of the nonwoven fabric can have synthetic and / or natural and / or regenerated fibers.
  • polyester fibers, polypropylene fibers or mixtures thereof have proven to be favorable as synthetic fibers, in particular because of their high durability, but also because of the low price.
  • the electrically conductive fibers used are particularly preferably those which have at least one highly conductive solid and flexible metal, such as copper, iron, aluminum, or fibers coated with a conductive metal or elemental carbon.
  • Preferred binders are nitrile-butadiene rubber and / or styrene-butadiene rubber latex.
  • Aqueous dispersions of nitrile-butadiene rubber, styrene-butadiene rubber latex or solvent-based binders such as polyurethane, polyvinyl chloride, polyacrylate or mixtures thereof can be used as binders.
  • the ratio of fiber to binder can preferably be 1: 2 to 2: 1, particularly preferably 1: 1 parts by weight.
  • the impregnated and dried nonwoven can then be sanded on one or both sides, for example with emery paper, to improve the surface.
  • a fleece suitable for the production of drive belts, conveyor belts and conveyor belts can have thicknesses of 1-8 mm, preferably 2-5 mm and a basis weight of 300-6,000, preferably 1,000-4,000 g / m2.
  • a conductive nonwoven for drive belts, conveyor and conveyor belts according to the invention consists of a preferably synthetic nonwoven, which has been mechanically consolidated, binders and fillers, dyes and vulcanizing agents, in which the fiber mixture contains 1-10 percent by weight of conductive fibers made of steel, graphite, cellulose or contains silver-plated or copper-containing fibers.
  • a band according to the invention is formed by a nonwoven layer 10, here with 10% by weight of steel fibers with 6 dtex.
  • the cross section of FIG. 2 shows that the steel fibers are evenly distributed over the entire thickness of the fleece.
  • polyester fabric or scrim with a basis weight of approx. 100 g / qm from 6 threads 1100 dtex in the longitudinal direction and 3 threads 1100 dtex in the transverse direction, 950 g / qm polyester fibers consisting of 2 parts of 6.7 dtex each on both sides and 1 part of 17 dtex, to which 2% by weight of steel fibers of 9 dtex were added, so that the thickness of the fleece is 6 mm, the weight per unit area is 2000 g / m 2 and the density is 0. 33 g / cubic centimeter.
  • the base fleece is then impregnated with 100% by weight of nitrile-butadiene rubber latex, to which 25% by weight of calcium carbonate as filler and 5% by weight of vulcanizing agent made of sulfur and zinc oxide are added, coagulated in an infrared shaft, washed out, dewatered, and then dried at 150 degrees Celsius and vulkani siert.
  • the binder-bonded nonwoven is then sanded on both sides with emery paper, grain size 120, so that a uniformly smooth surface and a thickness of 5.5 mm are produced.
  • the product has a surface resistance of 1x 105 Ohm at 100 V applied voltage.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Belt Conveyors (AREA)
  • Woven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Package Frames And Binding Bands (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Artificial Filaments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

The invention seeks to provide a band containing non-woven fabric, for drive and conveyor belts, which band does not build up electric charges. The fibre mixture of the non-woven fabric contains about 1 to 10 % by weight of electrically conductive fibres. <IMAGE>

Description

Die Erfindung betrifft ein Band mit Vliesstoff für Treib- ­und Antriebsriemen, Transport- und Förderbänder.The invention relates to a belt with nonwoven fabric for drive and drive belts, conveyor and conveyor belts.

Treib- und Antriebsriemen, Transport- und Förderbänder werden unter anderem unter Einsatz von Vliesstoffen hergestellt, die eine möglichst geringe Dehnbarkeit und ggf. eine gewisse Elastizität aufweisen, um eine Längung des Förderbandes während seines Einsatzes und ein dadurch notwendiges Nachspannen zu vermeiden.Driving and driving belts, conveyor belts and conveyor belts are manufactured using nonwovens, among other things, which have the least possible stretch and possibly a certain elasticity in order to avoid elongation of the conveyor belt during its use and the consequent re-tensioning.

Dabei besteht ein Problem in der leicht auftretenden elek­trischen Aufladung des Bandes oder Riemens bspw. in der Art und Weise, wie sie von der Arbeitsweise eines van der Graff-Generators bekannt ist. Besonders für den Transport empfindlicher, bspw. elektronischer Teile, ist dieser Effekt äußerst unerwünscht.One problem with this is the easily occurring electrical charging of the belt or belt, for example in the manner known from the way a van der Graff generator works. This effect is extremely undesirable, particularly for the transport of sensitive, for example electronic, parts.

Es ist bereits bekannt, Vliesstoffe antistatisch auszurü­sten, so wurde zur Vermeidung der Aufladung von Teppichbö­den und anderen, auch kunstfaserhaltigen Materialien be­reits vorgeschlagen, leitfähige Fasern in diese einzuar­beiten.It is already known to provide nonwovens with antistatic properties, so it has already been proposed to incorporate conductive fibers into them to avoid charging carpets and other materials, including synthetic fibers.

In der DE-OS 20 16 403 wurde vorgeschlagen, zur Vermeidung statischer Aufladungen von Teppichen ein Grundgewebe für Tufting Teppiche und Nadelvliese einzusetzen, das Fila­mentgarne oder Fasergarne aus einer Fasermischung mit Metallfasern oder metallisierten Fasern aufweist.In DE-OS 20 16 403 it was proposed to use a base fabric for tufting carpets and needle-punched nonwovens to avoid static charging of carpets, which has filament yarns or fiber yarns from a fiber mixture with metal fibers or metallized fibers.

Auch in der DE-PS 19 17 587 wird der Zusatz von Metall, bevorzugt Stahlfasern zu einem Schichtstoff aus verschie­denen Fasermaterialien beschrieben.In DE-PS 19 17 587 the addition of metal, preferably described steel fibers to a laminate made of different fiber materials.

Zur Vermeidung der statischen Aufladung von Drehtellern von Plattenspielern wurde bereits in der DE-PS 24 57 542 vorgeschlagen, Metallfasern, insbesondere Stahlfasern, in Filz einzuarbeiten, mit dem diese Teller belegt wurden.In order to avoid the static charging of turntables of turntables, it has already been proposed in DE-PS 24 57 542 to incorporate metal fibers, in particular steel fibers, in felt with which these plates have been coated.

Leitfähige Tücher aus einem Vlies mit einem Metallfaserge­halt für Filterzwecke wurden in "Textile Institute and Industry", 7, 1972, S.199 beschrieben.Conductive cloths made of a nonwoven with a metal fiber content for filter purposes were described in "Textile Institute and Industry", 7 , 1972, p.199.

Im Stand der Technik werden Vliese eingesetzt, die keine besonderen Anforderungen hinsichtliche Wiederstandsfähig­keit gegen Längenausdehnung unterworfen waren und für Förderbänder nicht geeignet sind.In the prior art, nonwovens are used which were not subject to any special requirements with regard to resistance to linear expansion and are not suitable for conveyor belts.

Es wurde auch bereits vorgeschlagen, derartige Förderbän­der zur Vermeidung von Aufladungen mit Bindemitteln oder Beschichtungsmassen herzustellen, denen leitfähige Stoffe, meist Ruß oder Metallstaub, zugesetzt waren. Dabei war es auch nachteilig, daß hierbei stets dunkle Förderbänder entstanden, während für viele Einsatzzwecke wie in der Elektronik- oder Lebensmittelindustrie gerade möglichst helle Bänder erwünscht sind. Die bisherigen Bänder waren entweder zu aufwendig in der Herstellung oder durch eine rasch verschleißende Beschichtung nachteilig. Das Problem wurde durch den zunehmenden Einsatz vonaufgrund ihrer günstigen Eigenschaften gut für den Einsatzzweck längen­konstanter Förderbänder geeigneter Kunststoffasern ver­stärkt, die in besonderem Maße zu elektrischer Aufladung neigen.It has also already been proposed to produce such conveyor belts to avoid charging with binders or coating compositions, to which conductive substances, mostly carbon black or metal dust, have been added. It was also disadvantageous that dark conveyor belts were always produced here, while for as many purposes as possible in the electronics or food industry, as bright as possible belts are desired. The previous tapes were either too expensive to manufacture or disadvantageous due to a rapidly wearing coating. The problem was exacerbated by the increasing use of plastic fibers which are suitable for the purpose of length-constant conveyor belts and which are particularly prone to electrical charging due to their favorable properties.

Es ist demzufolge Aufgabe der Erfindung, Bänder mit Vlies­ stoff für Treib- und Antriebsriemen, Transport- und För­derbänder so auszurüsten, daß eine Aufladung der Förder­bänder vermieden werden kann.It is therefore an object of the invention to tapes with fleece Equip material for drive and drive belts, conveyor and conveyor belts so that charging of the conveyor belts can be avoided.

Die Aufgabe wird erfindungsgemäß durch ein ein Vlies auf­weisendes Bandmaterial gelöst, bei dem die Fasermischung des Vliesstoffes etwa l bis 10 Gew.% elektrisch leitfähige Fasern aufweist.The object is achieved according to the invention by a strip material having a nonwoven, in which the fiber mixture of the nonwoven has approximately 1 to 10% by weight of electrically conductive fibers.

Als Faservliese können verschiedenste Vliese eingesetzt werden, bspw. genadelte Vliese, Wirrfaservliese od. dgl.Various nonwovens can be used as fiber nonwovens, for example needled nonwovens, random fiber nonwovens or the like.

Die Fasermischung des Faservlieses kann synthetische, und/oder natürliche und/oder Regenerat-Fasern , wie bspw. Polyester-, Polyamid-, Polypropylen-, Polyacryl-, Baum­woll-, Kokos-, Zellwollfasern oder dgl. aufweisen.The fiber mixture of the nonwoven fabric can have synthetic and / or natural and / or regenerated fibers, such as, for example, polyester, polyamide, polypropylene, polyacrylic, cotton, coconut, rayon fibers or the like.

Es ist besonders bevorzugt, wenn das Band ein oder mehrere hochfeste dehnungsarme Garne, Filamente, Gewebe oder Gele­ge aus synthetischen und/oder natürlichen und/oder Rege­neratfasern aufweist. Als geeignete Fasern können unter anderem Polyester-, Polyamid-, Polypropylen-, Zellwoll-, Polyaramid-, Glas- und Keramikfasern oder Kombinationen hieraus eingearbeitet sein.It is particularly preferred if the tape has one or more high-strength, low-stretch yarns, filaments, fabrics or scrims made of synthetic and / or natural and / or regenerated fibers. Suitable fibers can include polyester, polyamide, polypropylene, wool, polyaramid, glass and ceramic fibers or combinations thereof.

Als elektrisch leitfähige Fasern können solche eingesetzt werden, die mindestens ein Metall oder elementaren Kohlen­stoff aufweisen.Those which have at least one metal or elemental carbon can be used as electrically conductive fibers.

Bspw. eignen sich Stahlfasern oder Kupferfasern für diesen Zweck, es können aber auch metallisierte, bspw. verkupfer­te oder versilberte Fäden eingesetzt werden. Unter Kohlen­stoff werden hier leitfähige Kohlenstoffmodifikationen, wie Graphitwhisker, verstanden.E.g. Steel fibers or copper fibers are suitable for this purpose, but it is also possible to use metallized, for example copper-plated or silver-plated threads. Carbon here means conductive carbon modifications, such as graphite whiskers.

Für diese Zwecke haben sich bei einer bevorzugten Ausfüh­rungsform Stahlfasern mit einen Titer von 0,8 -18 dtex, bevorzugt 3 -10 dtex und einer Stapellänge von 20 - 80 mm als vorteilhaft erwiesen.In a preferred embodiment, steel fibers with a titer of 0.8-18 dtex, preferably 3-10 dtex and a staple length of 20-80 mm have proven to be advantageous for these purposes.

Es ist bevorzugt, daß der Oberflächenwiderstand des Vlies­materials bei 100 V Spannung lO² bis 10⁸, bevorzugt 10⁴ bis 10⁶ Ohm beträgt.It is preferred that the surface resistance of the nonwoven material at 100 V voltage is 10-2 to 10⁸, preferably 10⁴ to 10⁶ ohms.

Es können hydrophobe Bindemittel, wie Nitril-Butadien-­kautschuk-und/oder Styrol-Butadien-Kautschuk-Latex einge­setzt werden.Hydrophobic binders, such as nitrile-butadiene rubber and / or styrene-butadiene rubber latex, can be used.

Ein leitfähiger Vliesstoff für Treibriemen, Transport-und Förderbänder ist bevorzugt aus einem mechanisch vernadel­ten synthetischen Faservlies mit eingearbeiteten leitfä­higen Fasern und einem Binder, mit welchem das Basisvlies imprägniert wird. Bei der Herstellung des Vliesstoffes, der ggfs. ein oder mehrere Gewebe oder Gelege enthalten kann, werden dem Faservlies leitfähige Fasern beigemischt, sodann wird das mechanisch verfestigte Vlies mit einer Binderlösung imprägniert und anschließend bei einer Tempe­ratur von 100° C getrocknet.A conductive nonwoven for drive belts, conveyor belts and conveyor belts is preferably made of a mechanically needled synthetic fiber fleece with incorporated conductive fibers and a binder with which the base nonwoven is impregnated. In the manufacture of the nonwoven, which may contain one or more fabrics or scrims, conductive fibers are added to the nonwoven, then the mechanically consolidated nonwoven is impregnated with a binder solution and then dried at a temperature of 100 ° C.

Dabei kann die Fasermischung des Faservliesstoffes synthe­tische und/oder natürliche und/oder Regenerat-Fasern auf­weisen. Als synthetische Fasern haben sich bspw. Poly­esterfasern, Polypropylenfasern bzw. Gemische derselben als günstig erwiesen, insbesondere wegen ihrer hohen Be­ständigkeit, aber auch wegen des günstigen Preises.The fiber mixture of the nonwoven fabric can have synthetic and / or natural and / or regenerated fibers. For example, polyester fibers, polypropylene fibers or mixtures thereof have proven to be favorable as synthetic fibers, in particular because of their high durability, but also because of the low price.

Als elektrisch leitfähige Fasern werden besonders bevor­zugt solche eingesetzt, die mindestens ein gut leitfähi­ ges und flexibles Metall, wie Kupfer, Eisen, Aluminium, oder mit einem leitfähigen Metall überzogene Fasern oder elementaren Kohlenstoff aufweisen.The electrically conductive fibers used are particularly preferably those which have at least one highly conductive solid and flexible metal, such as copper, iron, aluminum, or fibers coated with a conductive metal or elemental carbon.

Bevorzugte Bindemittel sind Nitril-Butadien-Kautschuk-­und/oder Styrol-Butadien-Kautschuk-Latex. Als Bindemittel kann man bspw. wäßrige Dispersionen aus Nitril-Butadien-­kautschuk- , Styrol-Butadien-Kautschuk-Latex oder lösemit­telgelöste Binder, wie Polyurethan, Polyvinylchlorid, Polyacrylat oder Mischungen aus denselben einsetzen.Preferred binders are nitrile-butadiene rubber and / or styrene-butadiene rubber latex. Aqueous dispersions of nitrile-butadiene rubber, styrene-butadiene rubber latex or solvent-based binders such as polyurethane, polyvinyl chloride, polyacrylate or mixtures thereof can be used as binders.

Dabei kann das Verhältnis Faser zu Binder bevorzugt 1 : 2 bis 2 :1, besonders bevorzugt 1 : 1 Gewichtsteile betra­gen.The ratio of fiber to binder can preferably be 1: 2 to 2: 1, particularly preferably 1: 1 parts by weight.

Der imprägnierte und getrocknete Vliesstoff kann zur Ver­besserung der Oberfläche sodann ein- oder beidseitig, bspw. mit Schmirgelpapier, geschliffen werden.The impregnated and dried nonwoven can then be sanded on one or both sides, for example with emery paper, to improve the surface.

Ein für die Herstellung von Treibriemen, Transport- und Förderbänder geeignetes Vlies kann Stärken von 1 - 8 mm, bevorzugt von 2 - 5 mm und ein Flächengewicht von 300 - ­6.000 , bevorzugt 1.000 - 4.000 g/m² besitzen.A fleece suitable for the production of drive belts, conveyor belts and conveyor belts can have thicknesses of 1-8 mm, preferably 2-5 mm and a basis weight of 300-6,000, preferably 1,000-4,000 g / m².

Ein erfindungsgemäßer leitfähiger Vliesstoff für Treibrie­men, Transport - und Förderbänder, besteht aus einem vor­zugsweise synthetischen Faservlies, welches mechanisch verfestigt wurde, Binder und Füllstoffen, Farbstoffen und Vulkanisationsmitteln, bei dem die Fasermischung 1 - 10 Gewichtsprozent an leitfähigen Fasern aus Stahl, Graphit, Zellwolle oder an versilberten oder kupferhaltigen Fasern enthält.A conductive nonwoven for drive belts, conveyor and conveyor belts according to the invention consists of a preferably synthetic nonwoven, which has been mechanically consolidated, binders and fillers, dyes and vulcanizing agents, in which the fiber mixture contains 1-10 percent by weight of conductive fibers made of steel, graphite, cellulose or contains silver-plated or copper-containing fibers.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der ein bevorzugtes Ausführungsbeispiel anhand der Zeichnung erläutert ist, in der ein erfindungsgemäßes Band dargestellt ist. Dabei zeigt:

  • Fig.1: einen Teilabschnitt eineserfindungsgemäßen Bandes in der Draufsicht;
    und
  • Fig.2: den Teilabschnitt des Bandes der Fig. 1 im Querschnitt.
Further features and advantages of the invention result from the following description, in which a preferred embodiment is explained with reference to the drawing, in which a tape according to the invention is shown. It shows:
  • Figure 1: a partial section of a tape according to the invention in plan view;
    and
  • Fig.2: the section of the tape of Fig. 1 in cross section.

Wie in Fig. 1 gezeigt, ist ein erfindungsgemäßes Band durch eine Faservliesschicht 10, hier mit 10 Gew.% Stahl­fasern mit 6 dtex gebildet. Im Querschnitt der Fig. 2 zeigt sich, daß die Stahlfasern gleichmäßig über die ge­samte Dicke des Vlieses verteilt sind.As shown in FIG. 1, a band according to the invention is formed by a nonwoven layer 10, here with 10% by weight of steel fibers with 6 dtex. The cross section of FIG. 2 shows that the steel fibers are evenly distributed over the entire thickness of the fleece.

Beispiel:Example:

Zu einem Polyester-Gewebe bzw. -Gelege mit einem Flächen­gewicht von ca 100 g/qm aus 6 Fäden 1100 dtex in Längs­richtung und 3 Fäden 1100 dtex in Querrichtung werden beidseitig je 950 g/qm Polyester-Fasern bestehend aus 2 Teilen 6,7 dtex und 1 Teil 17 dtex, denen 2 Gew.% Stahlfa­sern von 9 dtex beigemischt waren, zugegenadelt, so daß die Stärke des Vlieses 6mm, das Flächengewicht 2000 g/qm und die Dichte 0. 33 g/Kubikzentimeter beträgt.For a polyester fabric or scrim with a basis weight of approx. 100 g / qm from 6 threads 1100 dtex in the longitudinal direction and 3 threads 1100 dtex in the transverse direction, 950 g / qm polyester fibers consisting of 2 parts of 6.7 dtex each on both sides and 1 part of 17 dtex, to which 2% by weight of steel fibers of 9 dtex were added, so that the thickness of the fleece is 6 mm, the weight per unit area is 2000 g / m 2 and the density is 0. 33 g / cubic centimeter.

Das Basisvlies wird anschließend mit 100 Gew.% Nitril-­Butadien-Kautschuk-Latex, dem 25 Gew.% Calciumcarbonat als Füllstoff und 5 Gew.% Vulkanisationsmittel aus Schwefel und Zinkoxid zugesetzt sind,imprägniert, in einem Infra­rotschacht koaguliert, ausgewaschen, entwässert, an­schließend bei 150 Grad Celsius getrocknet und vulkani­ siert. Anschließend wird der binderverfestigte Vliesstoff beidseitig mit Schmirgelpapier, Körnung 120, geschliffen, so daß eine gleichmäßig glatte Oberfläche und eine Stärke von 5,5mm entsteht.The base fleece is then impregnated with 100% by weight of nitrile-butadiene rubber latex, to which 25% by weight of calcium carbonate as filler and 5% by weight of vulcanizing agent made of sulfur and zinc oxide are added, coagulated in an infrared shaft, washed out, dewatered, and then dried at 150 degrees Celsius and vulkani siert. The binder-bonded nonwoven is then sanded on both sides with emery paper, grain size 120, so that a uniformly smooth surface and a thickness of 5.5 mm are produced.

Das Produkt besitzt einen Oberflächenwiderstand von 1x 10⁵ Ohm bei 100 V angelegter Spannung.The product has a surface resistance of 1x 10⁵ Ohm at 100 V applied voltage.

Claims (5)

1. Band mit Vliesstoff für Treib- und Antriebsriemen, Transport- und Förderbänder,dadurch gekennzeichnet, daß die Fasermischung des Vliesstoffes etwa 1 bis 10 Gew.% elektrisch leitfähige Fasern aufweist.1. Belt with nonwoven fabric for drive and drive belts, conveyor and conveyor belts, characterized in that the fiber mixture of the nonwoven fabric has about 1 to 10% by weight of electrically conductive fibers. 2. Band nach Anspruch 1, dadurch gekennzeichnet, daß die Fasermischung synthetische, und/oder natürliche und/oder Regenerat-Fasern aufweist.2. Band according to claim 1, characterized in that the fiber mixture has synthetic, and / or natural and / or regenerated fibers. 3. Band nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Oberflächenwiderstand bei 100 V Spannung lO² bis 10⁸, bevorzugt 10⁴ bis 10⁶ Ohm beträgt.3. Band according to one of the preceding claims, characterized in that the surface resistance at 100 V voltage lO² to 10⁸, preferably 10⁴ to 10⁶ ohms. 4. Band nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die leitfähigen Fasern mindestens ein Metall oder elementaren Kohlenstoff aufweisen.4. Band according to one of the preceding claims, characterized in that the conductive fibers have at least one metal or elemental carbon. 5. Band nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß es ein oder mehrere hochfeste, deh­nungsarme Garne, Filamente, Gewebe oder Gelege aus synthe­tischen und/oder natürlichen und/oder Regeneratfasern aufweist.5. Band according to one of the preceding claims, characterized in that it has one or more high-strength, low-stretch yarns, filaments, fabrics or scrims made of synthetic and / or natural and / or regenerated fibers.
EP88108804A 1987-07-22 1988-06-01 Band containing non-woven fabric, for drive and conveyor belts Expired - Lifetime EP0300176B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88108804T ATE71051T1 (en) 1987-07-22 1988-06-01 BELT WITH NON-WOVEN FOR DRIVING AND DRIVE BELTS, TRANSPORT AND CONVEYOR BELT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3724328 1987-07-22
DE19873724328 DE3724328A1 (en) 1987-07-22 1987-07-22 TAPE WITH FLEECE FOR DRIVE AND DRIVE BELTS, TRANSPORT AND CONVEYOR BELTS

Publications (3)

Publication Number Publication Date
EP0300176A2 true EP0300176A2 (en) 1989-01-25
EP0300176A3 EP0300176A3 (en) 1990-04-11
EP0300176B1 EP0300176B1 (en) 1992-01-02

Family

ID=6332154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108804A Expired - Lifetime EP0300176B1 (en) 1987-07-22 1988-06-01 Band containing non-woven fabric, for drive and conveyor belts

Country Status (9)

Country Link
EP (1) EP0300176B1 (en)
AT (1) ATE71051T1 (en)
DE (2) DE3724328A1 (en)
DK (1) DK330988A (en)
ES (1) ES2028181T3 (en)
FI (1) FI86894C (en)
IE (1) IE60892B1 (en)
NO (1) NO882960L (en)
PT (1) PT87899B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017392A1 (en) * 1991-04-08 1992-10-15 Lohmann Gmbh & Co. Kg Web material for transport and conveyor belts and process for producing the same
WO2000073177A1 (en) * 1999-05-27 2000-12-07 Antonio Antoniazzi Elastic conveyor belt with conducting fibres for the discharge of static electricity and leather perching machine comprising such belt
EP1813317A1 (en) * 2006-01-19 2007-08-01 Hai-Pin Kuo Endless belt for treadmill
EP1813316A1 (en) * 2006-01-31 2007-08-01 Hai-Pin Kuo Endless belt for exercise treadmill

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR2181564A1 (en) * 1972-04-28 1973-12-07 Boinet Manuf Gle Caoutch
US3998986A (en) * 1975-02-03 1976-12-21 Uniroyal Inc. Conveyor belt of rubber reinforced with stitch-bonded web fabric
DE2826953A1 (en) * 1978-06-20 1980-01-10 Bayer Ag Stable antistatic air filter - comprises needled felt made of acrylonitrile! polymer fibres with metal conducting coating
GB1589467A (en) * 1977-12-02 1981-05-13 Bright & Bros Ltd John Reinfrorced conveyor belting

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DE8334233U1 (en) * 1984-03-01 Continental Gummi-Werke Ag Power transmission belts
DE1750073A1 (en) * 1963-03-27 1971-01-07 John Bright & Brothers Ltd belt
DE2016403A1 (en) * 1970-04-07 1971-10-28 Gebhard & Co AG, 5600 Wuppertal Base fabric for needled carpet and felt
US4154335A (en) * 1977-11-04 1979-05-15 Albany International Corp. Conveyor belting and method of manufacture
FR2511637A1 (en) * 1981-08-24 1983-02-25 Albany Int Corp METHOD FOR MANUFACTURING A CONVEYOR BELT, AND BELT THEREFOR

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2181564A1 (en) * 1972-04-28 1973-12-07 Boinet Manuf Gle Caoutch
US3998986A (en) * 1975-02-03 1976-12-21 Uniroyal Inc. Conveyor belt of rubber reinforced with stitch-bonded web fabric
GB1589467A (en) * 1977-12-02 1981-05-13 Bright & Bros Ltd John Reinfrorced conveyor belting
DE2826953A1 (en) * 1978-06-20 1980-01-10 Bayer Ag Stable antistatic air filter - comprises needled felt made of acrylonitrile! polymer fibres with metal conducting coating

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017392A1 (en) * 1991-04-08 1992-10-15 Lohmann Gmbh & Co. Kg Web material for transport and conveyor belts and process for producing the same
WO2000073177A1 (en) * 1999-05-27 2000-12-07 Antonio Antoniazzi Elastic conveyor belt with conducting fibres for the discharge of static electricity and leather perching machine comprising such belt
US6702105B2 (en) 1999-05-27 2004-03-09 Antonio Antoniazzi Elastic conveyor belt with conducting fibers for the discharge of static electricity
EP1813317A1 (en) * 2006-01-19 2007-08-01 Hai-Pin Kuo Endless belt for treadmill
EP1813316A1 (en) * 2006-01-31 2007-08-01 Hai-Pin Kuo Endless belt for exercise treadmill

Also Published As

Publication number Publication date
PT87899B (en) 1993-09-30
EP0300176A3 (en) 1990-04-11
NO882960D0 (en) 1988-07-01
DE3724328A1 (en) 1989-02-09
DK330988D0 (en) 1988-06-16
FI86894B (en) 1992-07-15
FI883011A0 (en) 1988-06-22
DK330988A (en) 1989-01-23
EP0300176B1 (en) 1992-01-02
ATE71051T1 (en) 1992-01-15
PT87899A (en) 1989-06-30
IE60892B1 (en) 1994-08-24
FI86894C (en) 1992-10-26
IE881705L (en) 1989-01-22
ES2028181T3 (en) 1992-07-01
DE3724328C2 (en) 1990-02-15
NO882960L (en) 1989-01-23
DE3867348D1 (en) 1992-02-13
FI883011A (en) 1989-01-23

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