WO1998042903A2 - Method and device for producing an absorbing non-woven carbon fabric - Google Patents

Method and device for producing an absorbing non-woven carbon fabric Download PDF

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Publication number
WO1998042903A2
WO1998042903A2 PCT/DE1998/000815 DE9800815W WO9842903A2 WO 1998042903 A2 WO1998042903 A2 WO 1998042903A2 DE 9800815 W DE9800815 W DE 9800815W WO 9842903 A2 WO9842903 A2 WO 9842903A2
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WO
WIPO (PCT)
Prior art keywords
fleece
activated carbon
producing
carbon
ponds
Prior art date
Application number
PCT/DE1998/000815
Other languages
German (de)
French (fr)
Other versions
WO1998042903A3 (en
Inventor
Aleksander Borowiecki
Marek Dyner
Andrzej Moraczewski
Norbert Peters
Czeslaw Praski
Zbigniew Symykala
Marian Ziolko
Original Assignee
Varex Medizintechnik Und Pharma Gmbh
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Application filed by Varex Medizintechnik Und Pharma Gmbh filed Critical Varex Medizintechnik Und Pharma Gmbh
Publication of WO1998042903A2 publication Critical patent/WO1998042903A2/en
Publication of WO1998042903A3 publication Critical patent/WO1998042903A3/en

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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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28028—Particles immobilised within fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • 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
    • 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
    • D04H1/407—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 containing absorbing substances, e.g. activated carbon
    • 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
    • D04H1/544—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
    • D04H1/58—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
    • D04H1/60—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 dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently

Definitions

  • the invention relates to a method for producing an absorption carbon fleece according to the preamble of
  • Activated carbon ponds which have a grain size above 0.71 mm by means of an adhesive. It is known to use an adhesive made of natural rubber milk for this purpose.
  • Activated carbon particles are obtained by glue vulcanization and thickening of the non-woven activated carbon mass.
  • the known production methods include the steps of applying the adhesive to the nonwoven, pouring the activated carbon particles onto the adhesive, pressing the nonwoven activated carbon adhesive composition with the necessary pressure and thermally shaping this composition.
  • a disadvantage of the known methods is the fact that the activated carbon ponds are embedded in the adhesive mass and as a result a large part of the surface of the activated carbon ponds is covered with adhesive and is not available for absorption purposes.
  • FIG. 1 shows a schematic representation of a plant which works according to the method according to the invention and in which the absorption fleece according to the invention is produced.
  • the system according to the invention works in continuous operation and essentially consists of five stations.
  • the fleece 2 wound on a shaft 1 is combined with the tensioning device 5 by an unwinder 3 and the transporter 4.
  • the fleece 2 is clamped by the unwinder 3 and the transporter 4.
  • a container 6 in which activated carbon 7 is located.
  • the container 6 is equipped with a metering device 8.
  • the activated carbon particles 7 falling from the container 6 largely remain caught in the fabric of the fleece 2.
  • the amount of the activated carbon 7 to be introduced into the fleece 2 is regulated by the metering device 8.
  • a fleece made of stacked polypropylene fibers with a fiber thickness of approx. 17 dtex (10000 m fiber weigh 1.7 grams) has proven to be an advantageous material, which has a thickness of 10 mm with a mass of 200 grams / m2.
  • the fleece 2 is preferably a material in which the short fibers consist of the same polypropylene material and interlock with one another and thus form a coherent formation.
  • the fleece 2 can also consist of a mixture of short fibers made of different materials with different melting points, the fleece material being subjected to a heat treatment in order to fuse the different fibers together.
  • the fibers with the lower melting point are melted at a temperature which is above the melting point of one type of fiber but below the melting point of the other type of fiber. This created a connection at the points of contact between the different fibers.
  • the activated carbon ponds 7 remain largely in the 10 mm thick fleece 2. For those activated carbon particles 7 that fall through the fleece 2, there is a collecting zone 9 below the fleece 2. From this collecting zone, the activated carbon particles 7 can be fed back to the container ⁇ and processed further.
  • a grain size of 0.71 mm has proven to be an advantageous size for the activated carbon particles 7.
  • next station there is at least one heat radiator 10, which heats the activated carbon 7 and the fleece 2 in such a way that the temperature reached ensures permanent fusion of the activated carbon particles 7 with the fleece material.
  • the dark activated carbon 7 absorbs the heat radiation better and is thereby heated faster than the comparatively light non-woven material.
  • the hot activated carbon particles melt into the fleece material.
  • the fleece 2 is heated from several sides.
  • a range from approximately 144 degrees C to 148 degrees C has proven to be a suitable temperature. However, there are also other nonwoven materials that can be used at different temperatures.
  • the fleece is transported on a moving support during the manufacturing process.
  • this station there is also a collecting zone 9, which collects the activated carbon particles 7 that fall out during the melting process.
  • the cooling station with a cooling fan 11 whose air flow cools the fleece 2 with cold air.
  • the previously soft nonwoven material becomes firm again and the activated carbon particles 7 remain permanently fixed in the nonwoven material.
  • the activated carbon particles 7 not fused with the nonwoven material are removed from the nonwoven by the air flow and land in the collecting zone 9.
  • the last station of the system is the drive device 12 which works together with the winder 13.
  • the rewinder 13 facilitates winding onto the take-off shaft 14.
  • the invention is not limited to the example described, but can also be used with thinner nonwovens. Using the process with thin nonwovens offers the advantage that the to the much faster and more homogeneous
  • the absorbent material produced by the present invention can be used to absorb odors and toxic gases of all kinds, it eliminates mold, fungus and allergenic dust particles. It can also be used in ventilation and air conditioning systems or as a filter for the defense industry. It can also be used for filtration in high-tech operating theaters or clean rooms. Reference list

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The active carbon crushed to a particle size of less than 0.71 mm is mechanically introduced into the non-woven mass consisting of chemical staple fibers. Said non-woven fabric carbon mass is heated so that the active carbon particles can fuse with the non-woven fabric, after which cold air is applied. The installation used to produce absorbing non-woven carbon fabric comprises five work stations: a driving area where the non-woven fabric is supplied from a roll to the following work stations, a work station for depositing carbon, a work station for heating, and a work station for cooling the inventive non-woven carbon fabric mass, which is wound onto a roll in a final work station.

Description

Verfahren und Vorrichtung zur Herstellung eines AbsorptionskohlevliesesMethod and device for producing an absorbent carbon fleece
Gegenstand der Erfindung ist ein Verfahren zur Herstellung eines Absorptionskohlevlies gemäß dem Oberbegriff desThe invention relates to a method for producing an absorption carbon fleece according to the preamble of
Verfahrensanspruchs 1 sowie eine Vorrichtung zur Herstellung von Absorptionskohlevlies gemäß dem Vorrichtungsanspruch 6.Method claim 1 and a device for producing absorption carbon fleece according to the device claim 6.
Die Herstellung des Absorptionskohlevlieses erfolgt nach dem Stand der Technik durch Verbindung des Vlieses mitThe absorption carbon fleece is produced according to the prior art by connecting the fleece to
Aktivkohleteichen, welche eine Körnigkeit über 0,71 mm aufweisen mittels eines Klebstoffes. Es ist bekannt hierzu einen Klebstoff aus natürlicher Kautschukmilch zu verwenden.Activated carbon ponds, which have a grain size above 0.71 mm by means of an adhesive. It is known to use an adhesive made of natural rubber milk for this purpose.
Dieser Klebstoff wird auf die Oberfläche des Vlieses aufgetragen. Die Verbindung zwischen Vlies undThis adhesive is applied to the surface of the fleece. The connection between fleece and
Aktivkohleteilchen wird durch Leimvulkanisation und Verdickung der Vlies-Aktivkohle-Masse erreicht.Activated carbon particles are obtained by glue vulcanization and thickening of the non-woven activated carbon mass.
Die bekannten Herstellungsverfahren umfassen die Schritte Auftragen des Klebstoffes auf den Vlies, Aufschüttung der Aktivkohleteilchen aufden Klebstoff, Pressen der Vlies- Aktivkohle-Klebstoff Masse mit dem nötigen Druck sowie thermisches Formen dieser Masse.The known production methods include the steps of applying the adhesive to the nonwoven, pouring the activated carbon particles onto the adhesive, pressing the nonwoven activated carbon adhesive composition with the necessary pressure and thermally shaping this composition.
Nachteilig bei den bekannten Verfahren ist die Tatsache, daß die Aktivkohleteichen in der Klebstoffmasse eingebettet sind und dadurch ein großer Teil der Oberfläche der Aktivkohleteichen von Klebstoff bedeckt ist und nicht für Absorptionszwecke zur Verfügung steht.A disadvantage of the known methods is the fact that the activated carbon ponds are embedded in the adhesive mass and as a result a large part of the surface of the activated carbon ponds is covered with adhesive and is not available for absorption purposes.
Beim Aufschütten der Aktivkohleteilchen auf das bereits mit Klebstoff bedeckte Vlies kommt es zu statistischen Unterschieden in der Anzahl von Aktivkohleteichen pro Flächeneinheit .When the activated carbon particles are poured onto the fleece that is already covered with adhesive, there are statistical differences in the number of activated carbon ponds per unit area.
An Stellen, an denen sich relativ viele Aktivkohleteilchen befinden sind einige der Aktivkohleteilchen nur schwach mit dem Klebstoff verbunden. Diese schwach mit dem Klebstoff verbundenIn places where there are relatively many activated carbon particles, some of the activated carbon particles are only weak with that Glue connected. This weakly attached to the glue
Aktivkohleteichen bröckeln in großer Anzahl aus dem Vliesstoff aus, wodurch sich die Absorptionseigenschaft verschlechtert.Activated carbon ponds crumble out of the nonwoven fabric in large numbers, whereby the absorption property deteriorates.
Auch die generellen Nutzungseigenschaften sind hierdurch beeinträchtigt, da bei der Verarbeitung und Verwendung des nach dem bekannten Verfahren hergestellten Vlieses stets eine allgemeine Verschmutzung durch die abbröckelnden Aktivkohleteilchen auftritt. Dies macht wiederum nachteilig einen erhöhten Reinigungsaufwand notwendig bzw. verhindert den Einsatz der bekannten Vliese.The general properties of use are also adversely affected by this, since the processing and use of the nonwoven fabric produced by the known method always results in general contamination by the crumbling activated carbon particles. This, in turn, disadvantageously necessitates an increased cleaning effort or prevents the use of the known nonwovens.
Es ist Aufgabe der Erfindung die bekannten Nachteile des Standes der Technik zu überwinden und insbesondere den Anwendungsbereich des Absorptionskohlevlieses zu vergrößern und die Absorptionseigenschaften der Aktivkohleteilchen effektiver auszunutzen.It is an object of the invention to overcome the known disadvantages of the prior art and in particular to enlarge the field of application of the absorption carbon fleece and to use the absorption properties of the activated carbon particles more effectively.
Diese Aufgabe wurde gelößt durch die kennzeichnenden Merkmale der jeweiligen Hauptansprüche.This task has been solved by the characterizing features of the respective main claims.
Die jeweiligen Unteransprüche betreffen Weiterbildungen und/oder besonders vorteilhafte Ausgestaltungen der Erfindung.The respective subclaims relate to further developments and / or particularly advantageous refinements of the invention.
Nachfolgend wird das Verfahren und die Vorrichtung anhand der Bezugszeichenliste und einer Zeichnung näher erläutert.The method and the device are explained in more detail below with reference to the list of reference symbols and a drawing.
Die Figur 1 zeigt in schematischer Darstellung eine Anlage, welche nach dem erfindungsgemäßen Verfahren arbeitet und in der dabei das erfindungsgemäße Absorptionsvlies herstellt wird. Die erfindungsgemäße Anlage arbeitet im kontinuierlichen Betrieb und besteht im wesentlichen aus aus fünf Stationen.FIG. 1 shows a schematic representation of a plant which works according to the method according to the invention and in which the absorption fleece according to the invention is produced. The system according to the invention works in continuous operation and essentially consists of five stations.
In der ersten Station wird der auf einer Welle 1 aufgewickelte Vlies 2 durch einen Abwickler 3 und dem Transporteur 4 mit der Spannvorrichtung 5 zusammen. Durch den Abwickler 3 und den Transporteur 4 wird der Vlies 2 eingespannt. An der nächsten Station befindet sich ein Behalter 6 in dem sich Aktivkohle 7 befindet. Der Behalter 6 ist mit einem Dosierer 8 ausgestattet.In the first station, the fleece 2 wound on a shaft 1 is combined with the tensioning device 5 by an unwinder 3 and the transporter 4. The fleece 2 is clamped by the unwinder 3 and the transporter 4. At the next station there is a container 6 in which activated carbon 7 is located. The container 6 is equipped with a metering device 8.
Die aus dem Behalter 6 herabfallenden Aktivkohleteilchen 7 bleiben zum Großteil im Gewebe des Vlies 2 hängenbleiben. Durch den Dosierer 8 wird die Menge der in den Vlies 2 einzuführenden Aktivkohle 7 geregelt.The activated carbon particles 7 falling from the container 6 largely remain caught in the fabric of the fleece 2. The amount of the activated carbon 7 to be introduced into the fleece 2 is regulated by the metering device 8.
Durch geeignete Maßnahmen, etwa durch Vibration laßt sich das Einfuhren der Aktivkohleteilchen m die Vliesmasse mechanisch verbessern, jedoch auch alleine durch die auf die Aktivkohleteichen 7 wirkende Schwerkraft dringen die Aktivkohleteilchen 7 in den Vlies 2 ein.Appropriate measures, such as vibration, can mechanically improve the introduction of the activated carbon particles into the nonwoven mass, but the activated carbon particles 7 also penetrate into the nonwoven 2 solely due to the force of gravity acting on the activated carbon ponds 7.
Als vorteilhaftes Material hat sich ein Vlies aus Stapelpolypropylenfasern mit einer Faserstarke von ca. 17 dtex (10000 m Faser wiegen 1,7 Gramm ) erwiesen, welches eine Dicke von 10 mm bei einer Masse von 200 Gramm/m2 aufweist.A fleece made of stacked polypropylene fibers with a fiber thickness of approx. 17 dtex (10000 m fiber weigh 1.7 grams) has proven to be an advantageous material, which has a thickness of 10 mm with a mass of 200 grams / m2.
Bei dem Vlies 2 handelt es sich vorzugsweise um ein Material, bei dem die kurzen Fasern aus dem gleichen Polypropylenmaterial bestehen und sich gegenseitig ineinander verhaken und so eine zusammenhangende Formation bilden.The fleece 2 is preferably a material in which the short fibers consist of the same polypropylene material and interlock with one another and thus form a coherent formation.
Das Vlies 2 kann aber auch aus einer Mischung aus kurzen Fasern aus unterschiedlichem Material mit unterschiedlichem Schmelzpunkt bestehen, wobei das Vlies Material einer Wärmebehandlung unterzogen wurde, um die unterschiedlichen Fasern miteinander zu verschmelzen. Hierdurch sind bei einer Temperatur, die über dem Schmelzpunkt der einen Faserart, aber unter dem Schmelzpunkt der anderen Faserart liegt die Fasern mit dem niedrigeren Schmelzpunkt angeschmolzen. Dadurch entstanden und an den Berührungspunkten zwischen den unterschiedlichen Fasern Art eine Verbindung. In dem 10 mm starken Vlies 2 bleiben die Aktivkohleteichen 7 zum Großteil hängen. Für die jenigen Aktivkohlepartikel 7 die durch das Vlies 2 hindurchfallen, befindet sich unterhalb des Vlieses 2 eine Auffangzone 9. Aus dieser Auffangzone können die Aktivkohlepartikel 7 wieder dem Behälter β zugeführt und weiterverarbeitet werden.However, the fleece 2 can also consist of a mixture of short fibers made of different materials with different melting points, the fleece material being subjected to a heat treatment in order to fuse the different fibers together. As a result, the fibers with the lower melting point are melted at a temperature which is above the melting point of one type of fiber but below the melting point of the other type of fiber. This created a connection at the points of contact between the different fibers. The activated carbon ponds 7 remain largely in the 10 mm thick fleece 2. For those activated carbon particles 7 that fall through the fleece 2, there is a collecting zone 9 below the fleece 2. From this collecting zone, the activated carbon particles 7 can be fed back to the container β and processed further.
Als eine vorteilhafte Größe für die Aktivkohleteilchen 7 hat sich eine Körnigkeit von 0,71 mm erwiesen.A grain size of 0.71 mm has proven to be an advantageous size for the activated carbon particles 7.
In der nächsten Station befindet sich mindestens ein Wärmestrahler 10, der die Aktivkohle 7 und das Vlies 2 so erwärmt, daß die erreichte Temperatur ein dauerhaftes Verschmelzen der Aktivkohlepartikel 7 mit dem Vliesmaterial sichert. Hierbei wird der Effekt ausgenutzt, daß die dunkle Aktivkohle 7 die Wärmestrahlung besser absorbiert und dadurch schneller erhitzt wird als das vergleichsweise helle Vliesmaterial. Die heissen Aktivkohleteilchen schmelzen sich so in das Vliesmaterial ein.In the next station there is at least one heat radiator 10, which heats the activated carbon 7 and the fleece 2 in such a way that the temperature reached ensures permanent fusion of the activated carbon particles 7 with the fleece material. Here, the effect is exploited that the dark activated carbon 7 absorbs the heat radiation better and is thereby heated faster than the comparatively light non-woven material. The hot activated carbon particles melt into the fleece material.
Um eine möglichst homogene Erwärmung des gesamten Vliesvolumens zu erreichen, ist es vorteilhaft, wenn das Vlies 2 von mehreren Seiten aus erwärmt wird.In order to achieve as homogeneous a heating of the entire fleece volume as possible, it is advantageous if the fleece 2 is heated from several sides.
Als eine geeignete Temperatur hat sich ein Bereich von ca 144 Grad C bis 148 Grad C erwiesen. Es existieren jedoch auch noch andere Vliesmaterialien, bei denen mit anderen Temperaturen gearbeitet werden kann.A range from approximately 144 degrees C to 148 degrees C has proven to be a suitable temperature. However, there are also other nonwoven materials that can be used at different temperatures.
Damit während der Wärmebehandlung keine Deformation des Vlieses entsteht, ist es vorteilhaft, wenn das Vlies während des Herstellungsprozesses auf einer mitbewegten Auflage transportiert wird. Auch in dieser Station befindet sich eine Auffangzone 9, welche die beim Verschmelzprozess herausfallenden Aktivkohlepartikel 7 auffängt.So that no deformation of the fleece occurs during the heat treatment, it is advantageous if the fleece is transported on a moving support during the manufacturing process. In this station there is also a collecting zone 9, which collects the activated carbon particles 7 that fall out during the melting process.
Es folgt nun die Abkühlstation mit einem Kühlgebläse 11 dessen Luftstrom den Vlies 2 mit kalter Luft abkühlt. Das zuvor weiche Vliesmaterial wird wieder fest und die Aktivkohlenpartikel 7 bleiben dauerhaft im Vliesmaterial fixiert. Die nicht mit dem Vliesmaterial verschmolzenen Aktivkohleteilchen 7 werden durch den Luftstrom aus dem Vlies entfernt und landen in der Auffangzone 9.This is followed by the cooling station with a cooling fan 11 whose air flow cools the fleece 2 with cold air. The previously soft nonwoven material becomes firm again and the activated carbon particles 7 remain permanently fixed in the nonwoven material. The activated carbon particles 7 not fused with the nonwoven material are removed from the nonwoven by the air flow and land in the collecting zone 9.
Die letzte Station der Anlage bildet die Antriebvorrichtung 12 die mit dem AufWickler 13 zusammenarbeitet. Der Aufwickler 13 erleichtert das Aufwickeln auf die Abnahmewelle 14.The last station of the system is the drive device 12 which works together with the winder 13. The rewinder 13 facilitates winding onto the take-off shaft 14.
Die Erfindung beschränkt sich nicht nur auf das beschriebene Beispiel sondern läßt sich auch bei dünneren Vliesen einsetzen. Das Verfahren bei dünnen Vliesen einzusetzen bietet noch den Vorteil, daß wesentlich schneller und homogener die zumThe invention is not limited to the example described, but can also be used with thinner nonwovens. Using the process with thin nonwovens offers the advantage that the to the much faster and more homogeneous
Einschmelzen der Aktivkohlepartikel nötige Temperatur erreicht wird. Auch das Abkühlen geschieht bei dünnen Vliesen schneller. Anschließend können die dünnen Vliese mehrlagig zu einem dickeren Vlies gestapelt werden.Melting of the activated carbon particles required temperature is reached. Cooling is also quicker with thin nonwovens. The thin nonwovens can then be stacked in multiple layers to form a thicker nonwoven.
Das mittels der vorliegenden Erfindung hergestellte Absorptionsmaterial kann zur Absorption von Gerüchen und giftigen Gasen aller Art verwendet werden, es beseitigt Schimmel-, Pilz- und allergene Staubkornkeime. Es kann auch in Lüftungs- und Klimaanlagen oder als Filter für die Verteidigungsindustrie Verwendung finden. Ferner kann es für die Filtrierung in Operationssälen oder Reinräumen der Hightechnik eingesetzt werden. BezugszeichenlisteThe absorbent material produced by the present invention can be used to absorb odors and toxic gases of all kinds, it eliminates mold, fungus and allergenic dust particles. It can also be used in ventilation and air conditioning systems or as a filter for the defense industry. It can also be used for filtration in high-tech operating theaters or clean rooms. Reference list
1- Welle1- wave
2- Vlies2- fleece
3- Abwickler3- unwinder
4- Transporteur4- feed dog
5- Spannvorrichtung5- clamping device
6- Behälter6- container
7- Aktivkohle7- activated carbon
8- Dosierer8-doser
9- Auffangzone9- catchment area
10 - Wärmestrahler10 - radiant heater
11 - Kühlgebläse11 - Cooling fan
12 - Antriebsvorrichtung12 - drive device
13 - Aufwickler13 - rewinder
14 - Wickeldorn 14 - mandrel

Claims

Patentansprüche claims
1. Verfahren zur Herstellung eines Absorptionskohlevlieses, wobei Aktivkohleteilchen mit dem Vliesmaterial verbunden werden, dadurch gekennzeichnet, daß das Vliesmaterial (2) aus chemischen Stapelfasern besteht, Aktivkohleteichen (7) in das Innere des Vliesmaterials (2) aus chemischen Stapelfasern mechanisch eingeführt werden, - anschließend das Vliesmaterial (2) und/oder die1. A process for producing an absorption carbon fleece, wherein activated carbon particles are connected to the nonwoven material, characterized in that the nonwoven material (2) consists of chemical staple fibers, activated carbon ponds (7) are mechanically introduced into the interior of the nonwoven material (2) made of chemical staple fibers, then the nonwoven material (2) and / or the
Aktivkohleteichen (7) soweit erhitzt werden, bis ein Einschmelzen der Aktivkohleteichen (7) in die Fasern des Vliesmaterials (2) auftritt, und abschließend wird die Vlies-Aktivkohle-Masse soweit abgekühlt bis die Vliesmaterial (2) wieder aushärtet.Activated carbon ponds (7) are heated until the activated carbon ponds (7) melt into the fibers of the nonwoven material (2), and finally the nonwoven activated carbon mass is cooled until the nonwoven material (2) hardens again.
2. Verfahren zur Herstellung eines Absorptionskohlevlieses nach Anspruch 1 dadurch gekennzeichnet, daß - das Vliesmaterial (2) während des Herstellungsprozesses kontinuierlich bewegt wird.2. A method for producing an absorbent carbon fleece according to claim 1, characterized in that - the fleece material (2) is continuously moved during the manufacturing process.
3. Verfahren zur Herstellung eines Absorptionskohlevlieses nach Anspruch 1 dadurch gekennzeichnet, daß das Vliesmaterial (2) während des Herstellungsprozesses taktweise bewegt wird.3. A method for producing an absorbent carbon fleece according to claim 1, characterized in that the fleece material (2) is moved intermittently during the manufacturing process.
4. Verfahren zur Herstellung eines Absorptionskohlevlieses nach einem der vorangegangenen Ansprüche dadurch gekennzeichnet, daß das Vliesmaterial (2) und/oder die Aktivkohleteichen (7) auf eine Temperatur zwischen 144 Grad Celsius und 148 Grad Celsius erhitzt werden. 4. A process for producing an absorbent carbon fleece according to one of the preceding claims, characterized in that the fleece material (2) and / or the activated carbon ponds (7) are heated to a temperature between 144 degrees Celsius and 148 degrees Celsius.
5. Verfahren zur Herstellung eines Absorptionskohlevlieses nach einem der vorangegangenen Ansprüche dadurch gekennzeichnet, daß das Vliesmaterial während des Erwärmungs- und Abkühlungsprozesses ganz oder teileweise auf einer mitbewegten Transportvorrichtung aufliegt.5. A method for producing an absorbent carbon fleece according to one of the preceding claims, characterized in that the fleece material rests in whole or in part on a moving transport device during the heating and cooling process.
6. Vorrichtung zur Herstellung eines Absorptionskohlevlieses bei welchem Aktivkohleteichen (7) mit einem Vliesmaterial (2) verbunden sind dadurch gekennzeichnet, daß durch eine Antriebsvorrichtung das Vliesmaterial (2) transportierbar ist, durch eine dosierbare Vorrichtung (6,8) die Aktivkohleteichen (7) auf das Vliesmaterial (2) aufbringbar sind, durch eine Wärmequelle (10) das Vliesmaterial (2) und/oder die Aktivkohleteichen (7) bis zum Schmelzpunkt des6. Device for producing an absorbent carbon fleece in which activated carbon ponds (7) are connected to a non-woven material (2), characterized in that the non-woven material (2) can be transported by a drive device, the activated carbon ponds (7) by a meterable device (6, 8). can be applied to the nonwoven material (2), through a heat source (10) the nonwoven material (2) and / or the activated carbon ponds (7) to the melting point of the
Vliesmaterials (2) erhitzbar ist - durch eine Kühlvorrichtung (11) das zuvor erhitzteNonwoven material (2) is heatable - the previously heated by a cooling device (11)
Aktivkohle-Vlies Material auf eine Temperatur unterhalb des Schmelzpunktes Vliesmaterials (2) abkühlbar ist.Activated carbon fleece material can be cooled to a temperature below the melting point of the fleece material (2).
7. Vorrichtung zur Herstellung eines Absorptionskohlevlieses nach Anspruch 6 dadurch gekennzeichnet, daß durch die Antriebsvorrichtung (3,4) das Vliesmaterial (2) kontinuierlich transportierbar ist.7. A device for producing an absorption carbon fleece according to claim 6, characterized in that the nonwoven material (2) is continuously transportable by the drive device (3, 4).
8. Vorrichtung zur Herstellung eines Absorptionskohlevlieses nach Anspruch 6 dadurch gekennzeichnet, daß durch die Antriebsvorrichtung (3,4) das Vliesmaterial (2) taktweise transportierbar ist. 8. A device for producing an absorbent carbon fleece according to claim 6, characterized in that the nonwoven material (2) can be cyclically transported by the drive device (3, 4).
9. Vorrichtung zur Herstellung eines Absorptionskohlevlieses nach einem der Ansprüche 6 bis 8 dadurch gekennzeichnet, daß - mehrere Wärmequellen (10) vorgesehen sind, durch welche das Vliesmaterial (2) und/oder die Aktivkohleteichen (7) aus verschiedenen Richtungen erhitzbar sind.9. Device for producing an absorbent carbon fleece according to one of claims 6 to 8, characterized in that - several heat sources (10) are provided, through which the fleece material (2) and / or the activated carbon ponds (7) can be heated from different directions.
9. Vorrichtung zur Herstellung eines Absorptionskohlevlieses nach einem der Ansprüche 6 bis 8 dadurch gekennzeichnet, daß9. A device for producing an absorption carbon fleece according to one of claims 6 to 8, characterized in that
Transportelemente (4,5) vorgesehen sind, auf denen das Vliesmaterial (2) während des Erwärmungs- bzw Abkühlungsprozesses ganz oder teilweise aufliegt. Transport elements (4, 5) are provided on which the nonwoven material (2) rests in whole or in part during the heating or cooling process.
PCT/DE1998/000815 1997-03-20 1998-03-19 Method and device for producing an absorbing non-woven carbon fabric WO1998042903A2 (en)

Applications Claiming Priority (2)

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PL97319065A PL319065A1 (en) 1997-03-20 1997-03-20 Method of obtaining moisture absorbing carbon-fibre non-woven fabrics and apparatus therefor
PLP.319065 1997-03-20

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WO1998042903A3 WO1998042903A3 (en) 1998-11-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012149914A1 (en) * 2011-05-02 2012-11-08 Royal Natural Medicine, S.R.O. Means of filtration and/or sorption
CN113430712A (en) * 2021-07-20 2021-09-24 山西鑫隆植物纤维科技有限公司 Peculiar smell-removing and air-permeable plant fiber board production equipment and preparation process thereof

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WO1993006924A1 (en) * 1991-10-11 1993-04-15 Minnesota Mining And Manufacturing Company Particle-loaded nonwoven fibrous article for separations and purifications
WO1994011556A1 (en) * 1992-11-18 1994-05-26 Hoechst Celanese Corporation Fibrous structure containing immobilized particulate matter and process therefor
DE19617754A1 (en) * 1996-05-03 1997-11-06 Bluecher Gmbh Air cleaning filter for removing pollutants and odours from air

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
WO1993006924A1 (en) * 1991-10-11 1993-04-15 Minnesota Mining And Manufacturing Company Particle-loaded nonwoven fibrous article for separations and purifications
WO1994011556A1 (en) * 1992-11-18 1994-05-26 Hoechst Celanese Corporation Fibrous structure containing immobilized particulate matter and process therefor
DE19617754A1 (en) * 1996-05-03 1997-11-06 Bluecher Gmbh Air cleaning filter for removing pollutants and odours from air

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012149914A1 (en) * 2011-05-02 2012-11-08 Royal Natural Medicine, S.R.O. Means of filtration and/or sorption
CN113430712A (en) * 2021-07-20 2021-09-24 山西鑫隆植物纤维科技有限公司 Peculiar smell-removing and air-permeable plant fiber board production equipment and preparation process thereof

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WO1998042903A3 (en) 1998-11-05

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