EP1347815A1 - Triboelectric charge of woven and knitted fabric - Google Patents

Triboelectric charge of woven and knitted fabric

Info

Publication number
EP1347815A1
EP1347815A1 EP01988618A EP01988618A EP1347815A1 EP 1347815 A1 EP1347815 A1 EP 1347815A1 EP 01988618 A EP01988618 A EP 01988618A EP 01988618 A EP01988618 A EP 01988618A EP 1347815 A1 EP1347815 A1 EP 1347815A1
Authority
EP
European Patent Office
Prior art keywords
woven
knitted fabric
pollen
charge
fabric according
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.)
Withdrawn
Application number
EP01988618A
Other languages
German (de)
French (fr)
Inventor
Andreas Schröder
Claus Grobe
Dieter Wenninger
Jens Kranz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tesa SE
Original Assignee
Tesa SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tesa SE filed Critical Tesa SE
Publication of EP1347815A1 publication Critical patent/EP1347815A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/28—Plant or installations without electricity supply, e.g. using electrets
    • B03C3/30—Plant or installations without electricity supply, e.g. using electrets in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/39—Electrets separator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/43—Knitted filter mediums
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/45—Woven filter mediums

Definitions

  • the invention relates to a fabric or knitted fabric which receives an electrostatic charge through a special treatment and the utilization of this charge for filtering dust-like allergens transported by the atmospheric air, such as pollen, in a pollen protection which can be applied over the entire surface of windows and doors.
  • pollinosis hay fever
  • pollinosis i.e. the allergic reaction of the mucous membranes of the eye as well as the upper and lower respiratory tract with pollen and other airborne allergens
  • the allergic reaction to a pollen allergy usually manifests itself as reddening and tearing of the eyes (conjunctivitis), sneezing attacks (rhinitis) and irritable cough (bronchial asthma) as early reactions.
  • Ais late reaction to pollen allergy are e.g. Known eczema or eczema on the skin.
  • BESTATIGUNGSKOPIE be brought. Due to their relatively large mesh sizes of 1 - 2mm, these have good visual transparency and allow adequate ventilation of the living spaces, adequate protection against pollen dust (size approx. 10-50 ⁇ m) and fungal spores (size approx. 200 ⁇ m) is not possible due to the larger mesh size.
  • Filtration systems that completely remove air from pollen, germs and spores are used in air conditioning technology and in automobiles.
  • the high filter effect is described in DE 3904623 e.g. achieved by using filter mats, also often multi-layered, made of nonwovens, which due to their fibrous nature make the filter stage impassable for the above. Make allergens.
  • the laminate of filter mats is additionally folded in a zigzag.
  • such filter mats are not suitable as a protective device in the sense of the proposed invention.
  • a woven or knitted fabric to purify the air flowing into a room from pollen solely by adjusting the mesh size.
  • the mesh size required for purely mechanical filtering is therefore at least 20 ⁇ m and therefore no longer allows adequate visual transparency.
  • Another protective device against pollen, germs and spores installed in front of windows is e.g. specified in DE 4300422.
  • a material material is applied as a protective device not over the full area in front of the window pane, but in the two wedge-like spaces and the rectangular opening at the top of a window in the tilted position.
  • the problem of the lack of visual transparency of the protection is avoided by this type of attachment, but the protection for a complete opening of the window has to be removed by swinging open so that the protective effect no longer exists.
  • the support of the separation properties of filtration media by electrostatic charges is known and is used, for example, for filtration tasks in air conditioning systems, ventilation technology for automobiles or cleaning processes of industrial processes.
  • the principle of these electrostatic filters is based on the fact that at least two electrodes have different potentials, so that a high-voltage field is created between them.
  • One of the two electrodes acts as an ionization source for gas molecules, so that they are accelerated in the direction of the precipitation electrode.
  • the gas molecules transfer their charge to dust particles and cause the dust particles to be transported to the precipitation electrode, to separate there and thus be removed from the air flow to be cleaned.
  • DE19819989.2 describes, for example, an electron arrangement for such a task in automotive engineering, in which the ionization electrode is present in a pipe section as an axially arranged wire and the precipitation electrode is located on the pipe wall as woven or woven wire.
  • the principle of improving the filtration properties of a pollen protection by applying an external voltage is not suitable for a woven or knitted fabric that is to be applied in front of windows and doors.
  • the object of the present invention is to make the triboelectric charging of polymer and natural fibers usable for filtering pollen transported through the atmospheric air in the form of a woven or knitted fabric which can be applied in front of windows and doors.
  • the principle of applying triboelectric charging is based on the separation of charges, which is done macroscopically by rubbing or separating processes from at least two materials. Decisive for the sign and the amount of the charge are the exit energies W a of the near-surface electrons of the materials, since near-surface electrons emerge from the surface of one material and pass into that of the other. As a result, there is an electron deficiency in the surface of one material, which leads to a positive charge on the surface, while the other surface experiences a negative charge due to the excess of electrons.
  • the dissipation of the discharge of the electrostatic charge is achieved in that the volume resistance and the surface resistance of the materials are of the order of 10 12 - 10 15 ⁇ from 10 12 - 10 15 ⁇
  • Electrostatic charges by charge separation can be done, for example, by quickly removing a polymer film attached to one or both sides of the knitted fabric without air inclusions. Charging by the friction of particle-laden air on the knitted fabric is also possible, by intensively using a household or Indust ⁇ efones, blowers, fans or other types of air with high volume flows
  • the preferred possibility in the inventive sense is the manual rubbing of a polymeric or natural substance on the applied protective fabric after the application in front of the window
  • the invention In addition to utilizing the electrostatic charge for filtering pollen, the invention also enables the properties of sufficient air permeability and sufficient visual transparency, since the mesh size required for filtering can be increased beyond the pollen diameter
  • the charge can be restored after the precipitation by drying and subsequent rubbing with the appropriate polymer material Drying and recharging in one work step simply through the intensive flow of particle-laden air through the protective system when using a household hair dryer.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

The invention relates to woven or knitted fabric and is characterised in that an electrostatic charge is generated by means of friction on the woven or knitted fabric. Said electrostatic charge improves the filtration properties of the fabric.

Description

Beschreibung description
Triboelektrische Aufladung von Geweben und GewirkenTriboelectric charging of fabrics and knitted fabrics
Die Erfindung bezieht sich auf ein Gewebe oder Gewirk, welches durch eine spezielle Behandlung eine elektrostatische Aufladung erhält sowie der Nutzbarmachung dieser Aufladung zum Filtern von durch die Atmosphärenluft transportierten, staubförmigen Allergenen wie Pollen in einem vollflächig vor Fenstern und Türen applizierbaren Pollenschutz.The invention relates to a fabric or knitted fabric which receives an electrostatic charge through a special treatment and the utilization of this charge for filtering dust-like allergens transported by the atmospheric air, such as pollen, in a pollen protection which can be applied over the entire surface of windows and doors.
Seit mehreren Jahren wird in der Bundesrepublik das Auftreten von Pollinose (Heuschnupfen), also der allergischen Reaktion der Schleimhäute des Auges sowie der oberen und unteren Atemwege mit Blütenpollen und anderen durch die Luft transportierten Allergenen, in der Bevölkerung verfolgt. Dabei wurde ermittelt, dass in Deutschland in den letzten Jah- ren der Bevölkerungsanteil bei etwa 11-15% liegt. Die allergische Reaktion einer Pollenal- lergie äußert sich meist durch Rötungen und Tränenfluss der Augen (Konjunktivitis), Niesattacken (Rhinitis) sowie Reizhusten (Asthma bronchiale) als Frühreaktionen. Ais Spätreaktion auf die Pollenallergie sind z.B. Neurodermitis oder Ekzeme an der Haut bekannt. Als weitreichendere Konsequenzen neben den persönlichen Beschwerden der Betroffenen las- sen sich Verdienstausfall bzw. Arbeitsunfähigkeit während der Pollenflugperiode oder Anstieg von ärztlichen Behandlungskosten leicht ableiten, so dass für ein Pollenschutzgitter im Sinne der Erfindung zur Anbringung vor Fenster und Türen von Wohn- und Arbeitsräumen ein großer Bedarf besteht. Weiteres über Pollinose läßt sich im Ratgeber Pollenallergie, Ute Künkele, München 1992 recherchieren.The occurrence of pollinosis (hay fever), i.e. the allergic reaction of the mucous membranes of the eye as well as the upper and lower respiratory tract with pollen and other airborne allergens, has been observed in the Federal Republic of Germany for several years. It was determined that the population share in Germany has been around 11-15% in recent years. The allergic reaction to a pollen allergy usually manifests itself as reddening and tearing of the eyes (conjunctivitis), sneezing attacks (rhinitis) and irritable cough (bronchial asthma) as early reactions. Ais late reaction to pollen allergy are e.g. Known eczema or eczema on the skin. As more far-reaching consequences besides the personal complaints of those affected, loss of earnings or incapacity to work during the pollen season or increase in medical treatment costs can be easily deduced, so that a pollen protection grille in the sense of the invention for attaching to windows and doors of living and working spaces is a major one There is a need. Further information about pollinose can be found in the pollen allergy guide, Ute Künkele, Munich 1992.
Vollflächig vor Fenstern und Türen angebrachte Schutzsysteme, die das Eindringen von größeren Objekten wie z B Insekten in Wohnräume verhindern sollen, sind bekannt (=Flιegengιtter) In DE 3045723 werden z.B. Gardinen, Netze, Filter oder Siebe für einen solchen Zweck beschrieben, die mittels Druckknopfen an Fenster- oder Türrahmen aπge-Protection systems that are installed over the entire surface of windows and doors and are intended to prevent the penetration of larger objects such as insects into living spaces are known (= fly screen). DE 3045723 describes e.g. Curtains, nets, filters or sieves described for such a purpose, which are attached to the window or door frame by means of push buttons
BESTATIGUNGSKOPIE bracht werden. Aufgrund ihrer relativ großen Maschenweiten von 1 - 2mm besitzen diese eine gute visuelle Transparenz und erlauben eine ausreichende Belüftung der Wohnräume, der ausreichende Schutz vor Pollenstaub (Größe etwa 10-50μm) und Pilzsporen (Größe etwa 200μm) ist aufgrund der höheren Maschenweite nicht möglich.BESTATIGUNGSKOPIE be brought. Due to their relatively large mesh sizes of 1 - 2mm, these have good visual transparency and allow adequate ventilation of the living spaces, adequate protection against pollen dust (size approx. 10-50μm) and fungal spores (size approx. 200μm) is not possible due to the larger mesh size.
Filtrationseinrichtungen, die Luft völlig von Pollen, Keimen und Sporen befreien, finden Einsatz in der Klimatechnik und im Automobil. Die hohe Filterwirkung wird in DE 3904623 z.B. dadurch erreicht, dass Filtermatten, auch oft mehrlagig, aus Vliesstoffen eingesetzt werden, die durch ihre Faserigkeit die Filterstufe unpassierbar für o.a. Allergene machen. Zur Erhö- hung des Kontaktes der partikelbeladenen Luft mit dem Filter wird das Laminat aus Filtermatten zusätzlich zickzackgefaltet. Solche Filtermatten besitzen jedoch aufgrund ihrer nicht vorhandenen visuellen Transparenz keine Eignung als Schutzvorrichtung im Sinne der vorgeschlagenen Erfindung.Filtration systems that completely remove air from pollen, germs and spores are used in air conditioning technology and in automobiles. The high filter effect is described in DE 3904623 e.g. achieved by using filter mats, also often multi-layered, made of nonwovens, which due to their fibrous nature make the filter stage impassable for the above. Make allergens. To increase the contact of the particle-laden air with the filter, the laminate of filter mats is additionally folded in a zigzag. However, due to their non-existent visual transparency, such filter mats are not suitable as a protective device in the sense of the proposed invention.
Weiterhin besteht die Möglichkeit, mit einem Gewebe oder Gewirk einzig durch das Einstellen der Maschenweite die in eine Räumlichkeit einströmende Luft von Pollen zu reinigen. Die Größen der meisten in Europa vorkommenden, allergieauslösenden Pollen, im wesentlichen Birke, Süßgräser, Gänse- und Beifuß, Wegerich, Hasel, liegen in der Region von 20 - 40 μm. Die für eine rein mechanische Filterung notwendige Maschenweite beträgt daher wenigstens 20 μm und lässt somit keine ausreichende visuelle Transparenz mehr zu.It is also possible to use a woven or knitted fabric to purify the air flowing into a room from pollen solely by adjusting the mesh size. The sizes of most allergy-causing pollen occurring in Europe, mainly birch, sweet grass, goose and mugwort, plantain, hazel, are in the region of 20 - 40 μm. The mesh size required for purely mechanical filtering is therefore at least 20 μm and therefore no longer allows adequate visual transparency.
Eine weitere vor Fenstern angebrachte Schutzvorrichtungen gegen Pollen, Keime und Sporen wird z.B. in DE 4300422 angegeben. Hier erfolgt die Anbringung eines Stoffmaterials als Schutzvorrichtung jedoch nicht vollflächig vor der Fensterscheibe, sondern in den bei- den keilartigen Zwischenräumen sowie der rechteckigen Öffnung an der Oberseite eines in Kippstellung stehenden Fensters. Das Problem der nicht vorhandenen, visuellen Transparenz des Schutzes wird durch diese Art der Anbringung umgangen, jedoch muss der Schutz für eine völlige Öffnung des Fensters durch Aufschwenken entfernt werden, so dass keine Schutzwirkung mehr existent ist.Another protective device against pollen, germs and spores installed in front of windows is e.g. specified in DE 4300422. Here, however, a material material is applied as a protective device not over the full area in front of the window pane, but in the two wedge-like spaces and the rectangular opening at the top of a window in the tilted position. The problem of the lack of visual transparency of the protection is avoided by this type of attachment, but the protection for a complete opening of the window has to be removed by swinging open so that the protective effect no longer exists.
Die Unterstützung der Abscheideeigenschaften von Filtrationsmedien durch elektrostatische Aufladungen ist bekannt und wird beispielsweise für Filtrationsaufgaben in der Klϊmaanla- gentechnik, Lüftungstechnik für Automobile oder Reinigungsprozesse von industriellen Verfahren eingesetzt. Das Prinzip dieser Elektrofilter basiert darauf, dass an wenigstens zwei Elektroden unterschiedliche Potentiale angelegt sind, so dass zwischen ihnen ein Hochspannungsfeld entsteht. Eine der beiden Elektroden fungiert dabei als lonisations- quelle für Gasmoleküle, so dass diese beschleunigt werden in Richtung der Niederschlagselektrode. Auf dem Weg zur Niederschlagselektrode übertragen die Gasmoleküle ihre La- düng auf Staubpartikel und bewirken, dass die Staubpartikel zur Niederschlagselektrode transportiert, sich dort abscheiden und so aus dem zu reinigendem Luftstrom entfernt werden. DE19819989.2 beschreibt beispielsweise für eine solche Aufgabe in der Automobiltechnik eine Elektronenanordnung, bei der die lonisationselektrode in einem Rohrleitungsstück als axial angeordneter Draht vorliegt und die Niederschlagselektrode sich als Ge- webe- oder Drahtgespinst an der Rohrwand befindet. Das Prinzip, durch Anlegen einer Fremdspannung die Filtrationseigenschaften eines Pollenschutzes zu verbessern, eignet sich nicht für ein Gewebe oder Gewirk, welches vor Fenstern und Türen appliziert werden soll.The support of the separation properties of filtration media by electrostatic charges is known and is used, for example, for filtration tasks in air conditioning systems, ventilation technology for automobiles or cleaning processes of industrial processes. The principle of these electrostatic filters is based on the fact that at least two electrodes have different potentials, so that a high-voltage field is created between them. One of the two electrodes acts as an ionization source for gas molecules, so that they are accelerated in the direction of the precipitation electrode. On the way to the precipitation electrode, the gas molecules transfer their charge to dust particles and cause the dust particles to be transported to the precipitation electrode, to separate there and thus be removed from the air flow to be cleaned. DE19819989.2 describes, for example, an electron arrangement for such a task in automotive engineering, in which the ionization electrode is present in a pipe section as an axially arranged wire and the precipitation electrode is located on the pipe wall as woven or woven wire. The principle of improving the filtration properties of a pollen protection by applying an external voltage is not suitable for a woven or knitted fabric that is to be applied in front of windows and doors.
Eine weitere Anwendung von elektrostatischen Aufladungen für ähnliche Filtrationsaufgaben wird auch in DE4414728 beschreiben. Durch die Aufladung von netzförmigen Geweben aus synthetischen hochpolymeren Fasern soll ein elektrischen Feld zwischen dem Allergen und dem Gewebe entstehen, welches zur Filtration genutzt werden soll. Auf die Art der Aufbringung der elektrostatischen Aufladung wird jedoch nicht näher eingegangen.Another application of electrostatic charges for similar filtration tasks is also described in DE4414728. The charging of mesh-like fabrics made of synthetic high-polymer fibers is said to create an electric field between the allergen and the fabric, which is to be used for filtration. However, the type of application of the electrostatic charge is not discussed in detail.
Aufgabe der vorliegenden Erfindung ist es, die triboelektrische Aufladung von Polymer- und Naturfasern nutzbar zu machen für die Filterung von durch die Atmosphärenluft transportierten Pollen in Gestalt eines Gewebes oder Gewirks, welches vor Fenstern und Türen appliziert werden kann.The object of the present invention is to make the triboelectric charging of polymer and natural fibers usable for filtering pollen transported through the atmospheric air in the form of a woven or knitted fabric which can be applied in front of windows and doors.
Das Prinzip des Aufbringens einer triboelektrischen Aufladung basiert auf der Trennung von Ladungen, die makroskopisch durch Reib- oder Trennvorgänge von mindestens zwei Materialien geschieht. Ausschlaggebend für das Vorzeichen und die Höhe der Aufladung sind dabei zunächst die Austrittsenergien Wa der oberflächennahen Elektronen der Materialien, da oberflächennahe Elektronen aus der Oberfläche des einen Materials austreten und in die des anderen übergehen. Folglich entsteht in der Oberfläche des einen Materials ein Elektronenmangel, der zu einer positiven Aufladung der Oberfläche führt, während die andere Oberfläche durch den Elektronenüberschuss eine negative Aufladung erfährt Aus Lütt- gens/Glor Elektrostatische Aufladungen begreifen und sicher beherrschen, 2 Auflage, lasst sich ableiten, dass für eine möglichst rasche und hohe Aufladung der Materialien, wie bei der Erfindung vorgesehen, die Differenz ihrer Elektronenaustπttsenergien einen möglichst großen Betrag besitzen mussThe principle of applying triboelectric charging is based on the separation of charges, which is done macroscopically by rubbing or separating processes from at least two materials. Decisive for the sign and the amount of the charge are the exit energies W a of the near-surface electrons of the materials, since near-surface electrons emerge from the surface of one material and pass into that of the other. As a result, there is an electron deficiency in the surface of one material, which leads to a positive charge on the surface, while the other surface experiences a negative charge due to the excess of electrons. gens / Glor Understand and master electrostatic charges safely, 2 editions, it can be deduced that for a rapid and high charging of the materials, as provided for in the invention, the difference in their electron energies must have the greatest possible amount
Neben den Elektronenaustrittsenergien gehen auch Parameter wie Temperatur, Rauhigkeit und Verschmutzungsgrad der Oberflachen sowie Reib- bzw Trenngeschwindigkeit und Luftfeuchte in einen tπboelektrischen Aufladungsvorgang einIn addition to the electron exit energies, parameters such as temperature, roughness and degree of contamination of the surfaces, as well as the friction or separation speed and air humidity, are also involved in a teboelectric charging process
Das Unterbinden der Ableitung der elektrostatischen Aufladung wird dadurch erzielt, dass der Durchgangswiderstand sowie der Oberflachenwiderstand der Materialien der Größenordnung von 1012 - 1015 Ω hegt Für das Gewebe oder Gewirk werden deshalb bevorzugt Fasern bzw auf dem Gewirk oder Gewebe aufgebrachte Beschichtungen mit Oberflachen- widerstanden von 1012 - 1015 Ω eingesetztThe dissipation of the discharge of the electrostatic charge is achieved in that the volume resistance and the surface resistance of the materials are of the order of 10 12 - 10 15 Ω from 10 12 - 10 15 Ω
Elektrostatische Aufladungen durch Ladungstrennung können beispielsweise durch das rasche Entfernen einer vollflachig ein- oder beidseitig, ohne Lufteinschlusse an das Gewirk angebrachten Polymerfohe geschehen Ebenfalls ist eine Aufladung durch die Reibung von partikelbeladener Luft an dem Schutzgewirk möglich, indem das Schutzgewirk intensiv mit Hilfe eines Haushalts- oder Industπefones, Geblases, Ventilators oder einer sonstigen Art eines Lufters mit hohen Volumenstromen durchströmt wirdElectrostatic charges by charge separation can be done, for example, by quickly removing a polymer film attached to one or both sides of the knitted fabric without air inclusions. Charging by the friction of particle-laden air on the knitted fabric is also possible, by intensively using a household or Industπefones, blowers, fans or other types of air with high volume flows
Die bevorzugte Möglichkeit im erfinderischen Sinne ist das manuelle Reiben eines polyme- ren oder natürlichen Stoffes an dem applizierten Schutzgewirk nach der Anbringung vor dem FensterThe preferred possibility in the inventive sense is the manual rubbing of a polymeric or natural substance on the applied protective fabric after the application in front of the window
Neben der Nutzbarmachung der elektrostatischen Aufladung zur Filterung von Pollen ermöglicht die Erfindung zudem die Eigenschaften der genugenden Luftdurchlassigkeit und ausreichender visueller Transparenz, da die zur Filterung notwendige Maschenweite über den Pollendurchmesser hinaus vergrößert werden kannIn addition to utilizing the electrostatic charge for filtering pollen, the invention also enables the properties of sufficient air permeability and sufficient visual transparency, since the mesh size required for filtering can be increased beyond the pollen diameter
Im Falle der Ableitung der Aufladung z B durch ein Ansteigen der Luftfeuchte oder Regen kann die Aufladung nach dem Niederschlag durch Trocknung und anschließender Reibung mit dem passenden Polymerwerkstoff wiederhergestellt werden Denkbar ist auch eine Trocknung und Wiederaufladung in einem Arbeitsgang allein durch das intensives Durchströmen des Schutzsystems mit partikelbeladener Luft bei Anwenden eines Haushaltsfönes. If the charge is dissipated, for example by increasing the air humidity or rain, the charge can be restored after the precipitation by drying and subsequent rubbing with the appropriate polymer material Drying and recharging in one work step simply through the intensive flow of particle-laden air through the protective system when using a household hair dryer.

Claims

Patentansprüche claims
1. Gewebe oder Gewirke, dadurch gekennzeichnet, dass durch Reibung am Gewebe oder Gewirk eine elektrostatische Aufladung erzeugt wird, die eine Verbesserung seiner Filtrationseigenschaften bewirkt.1. woven or knitted fabric, characterized in that an electrostatic charge is generated by friction on the woven fabric or knitted fabric, which causes an improvement in its filtration properties.
2. Gewebe oder Gewirke nach Anspruch 1 , wobei deren Fasern aus einem oder mehreren reinen oder heteroatomhaltigen Kohlenwasserstoffen bestehen und einen Oberflächen- widerstand zwischen 1012 und 1015 Ω besitzen.2. Woven or knitted fabric according to claim 1, the fibers of which consist of one or more pure or heteroatom-containing hydrocarbons and have a surface resistance between 10 12 and 10 15 Ω.
3. Gewebe oder Gewirke nach Anspruch 1, wobei die Beschichtung des Gewebes oder Gewirks aus einem oder mehreren reinen oder heteroatomhaltigen Kohlenwasserstoffen besteht und einen Oberflächenwiderstand zwischen 1012 und 1015 Ω besitzt.3. Woven or knitted fabric according to claim 1, wherein the coating of the woven or knitted fabric consists of one or more pure or heteroatom-containing hydrocarbons and has a surface resistance between 10 12 and 10 15 Ω.
4. Gewebe oder Gewirke nach Anspruch 1, wobei der Durchmesser der Fäden zwischen 50 und 1000 μm beträgt.4. woven or knitted fabric according to claim 1, wherein the diameter of the threads is between 50 and 1000 microns.
5. Gewebe oder Gewirke nach Anspruch 1, wobei die freie Fläche einer Masche zwischen 300 und 90000 μm2 beträgt.5. woven or knitted fabric according to claim 1, wherein the free area of a stitch is between 300 and 90000 μm 2 .
6. Gewebe oder Gewirke nach den Ansprüchen 1 bis 6, wobei die Gewebe oder Gewirke zum Schutz vor staubförmigen Allergenen wie Pollen vor Fensterflächen oder Türöffnungen angebracht werden. 6. woven or knitted fabric according to claims 1 to 6, wherein the woven or knitted fabric is applied to protect against dust-like allergens such as pollen in front of window surfaces or door openings.
EP01988618A 2000-10-26 2001-10-23 Triboelectric charge of woven and knitted fabric Withdrawn EP1347815A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10053227 2000-10-26
DE10053227 2000-10-26
PCT/EP2001/012233 WO2002034364A1 (en) 2000-10-26 2001-10-23 Triboelectric charge of woven and knitted fabric

Publications (1)

Publication Number Publication Date
EP1347815A1 true EP1347815A1 (en) 2003-10-01

Family

ID=7661207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01988618A Withdrawn EP1347815A1 (en) 2000-10-26 2001-10-23 Triboelectric charge of woven and knitted fabric

Country Status (3)

Country Link
US (1) US7004995B2 (en)
EP (1) EP1347815A1 (en)
WO (1) WO2002034364A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10053229A1 (en) * 2000-10-26 2002-05-23 Tesa Ag Fabric or knitted pollen protection for windows and doors
US8323385B2 (en) * 2003-04-30 2012-12-04 Mikael Nutsos Conducting air filter and filter assembly
JP5599564B2 (en) * 2006-02-14 2014-10-01 カゴメ株式会社 Anti-fungal method by conidial adsorption using dielectric polarization, flying organism removal device, and plant protection device
US10168059B2 (en) * 2015-09-11 2019-01-01 Panasonic Intellectual Property Management Co., Ltd. Filtering medium and air purifier
US10622918B2 (en) 2016-07-07 2020-04-14 Wisconsin Alumni Research Foundation Cellulose composite-structured triboelectric generator and method

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL75856C (en) * 1950-03-29
US2875845A (en) * 1955-03-18 1959-03-03 Gaylord W Penney Electrostatic precipitator
US3307332A (en) * 1964-12-11 1967-03-07 Du Pont Electrostatic gas filter
US3563004A (en) * 1968-10-29 1971-02-16 Anpol Research Corp Separator structure
US3736727A (en) * 1971-10-06 1973-06-05 W Shriner Air pollution reduction system
SE402220B (en) * 1976-04-12 1978-06-26 Andren Sven Uno DEVICE FOR CLEANING OF SMOKE GASES AND OTHER EXHAUST GASES
DE3045723A1 (en) 1980-12-04 1982-07-08 Georg 4320 Hattingen Keiderling Curtains filter or nets removably attached to frame - by press-studs esp. for exclusion of pollen or insects
US4378980A (en) * 1981-11-09 1983-04-05 James M. Hammond Gas borne particle filtering apparatus
DE3509857C2 (en) 1984-03-19 1994-04-28 Toyo Boseki Electretized dust filter and its manufacture
DE3904623A1 (en) 1989-02-16 1990-08-23 Sandler Helmut Helsa Werke Filter in particular for a vehicle
US5037455A (en) * 1990-09-14 1991-08-06 The Great American Filter Company Air filter
DE9205948U1 (en) * 1992-05-04 1993-01-14 Mekkiou, Ferhat, Dipl.-Ing., 1000 Berlin, De
US5888274A (en) * 1992-07-23 1999-03-30 Edward R. Frederick Triboelectric property modification and selection of fabrics for filtration applications
DE4300422A1 (en) 1993-01-09 1993-07-15 Elisabeth Pooth Protective arrangement, partic. for windows - deflects dirt, dust, pollen, insects, wind, draught, water but guarantees fresh air supply
DE4321289A1 (en) * 1993-06-26 1995-01-05 Hoechst Ag Electret fibres with improved charge stability, manufacture thereof, and textile material containing same
DE4307398A1 (en) 1993-03-09 1994-12-01 Hoechst Ag Electret fibres having improved charge stability, production thereof and textile material containing these electret fibres
US5419953A (en) * 1993-05-20 1995-05-30 Chapman; Rick L. Multilayer composite air filtration media
DE4414728A1 (en) * 1994-04-27 1995-11-02 Reinhard Obermeier Insert screen which also traps allergenic particles
SE504999C2 (en) * 1994-06-07 1997-06-09 Freshman Ab Airflow duct insert
US5709735A (en) * 1995-10-20 1998-01-20 Kimberly-Clark Worldwide, Inc. High stiffness nonwoven filter medium
US5989303A (en) * 1996-08-19 1999-11-23 Hodge; Joseph Fan-fold filter for a forced air ventilation system
US5906677A (en) * 1997-05-05 1999-05-25 Dudley; Jesse R. Electrostatic supercharger screen
US5989320A (en) * 1997-05-05 1999-11-23 Rutkowski; Timothy C. Frameless electrostatic air filter with internal support grill
DE19819989A1 (en) 1998-05-05 1999-11-11 Franz Stark Device for comminuting objects
WO1999058224A1 (en) * 1998-05-13 1999-11-18 Texel Inc. Triboelectric air filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0234364A1 *

Also Published As

Publication number Publication date
US7004995B2 (en) 2006-02-28
WO2002034364A1 (en) 2002-05-02
US20040045441A1 (en) 2004-03-11

Similar Documents

Publication Publication Date Title
DE60020946T2 (en) AIR CLEANER
EP0211383A1 (en) Filtering apparatus
DE102011104628A1 (en) Antimicrobial filter medium and filter module
DE2505190A1 (en) ELECTROSTATIC FILTER
EP1882511A2 (en) Filter medium with bacterial effect
EP1347815A1 (en) Triboelectric charge of woven and knitted fabric
WO2008087096A1 (en) Cleaning device for a preferably flat surface, in particular a window
WO2020178153A1 (en) Electrostatic filter unit for an air-purification device and air-purification device
CH708693B1 (en) Mobile air purifier.
WO2006072235A1 (en) Method and device for the purification and conditioning of air
DE202015106002U1 (en) An air-purifying apparatus for an automotive air conditioning system using an intense electric field technology using a dielectric material as a carrier
EP1332320A1 (en) Protection against pollen in the form of woven or knitted fabric for windows and doors
DE202010000639U1 (en) Air conditioning device and electrostatic cleaning filter for this device
DE102021129671A1 (en) Filter module, system for filtering dust and method for separating dust from a gas stream
WO2008011844A1 (en) Device for protection against pollen
EP4061534A1 (en) Filter unit for air cleaning device, and air cleaning device
DE2063764A1 (en) Device for protecting the interiors of motor vehicles against polluted air
DE69829805T2 (en) AIR CLEANER
EP1008390A1 (en) Air cleaner system from dust,eg pollen-dust
EP1331980B1 (en) Use of a napped, planar textile structure as protection against pollen for windows and doors
DE202007010383U1 (en) Filter medium with bacterial action
EP1357994B1 (en) Use of a textile material having a three-dimensional structure as protection against pollen for windows and doors
DE102020109949B4 (en) room air purifier
DE102019216344A1 (en) Electrostatic filter unit for air purifier and air purifier
DE202016102371U1 (en) Sound barrier

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030526

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TESA AG

17Q First examination report despatched

Effective date: 20070821

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080102