WO2004014575A1 - Procede d'application d'un revetement en poudre sur des surfaces pour obtenir l'effet lotus - Google Patents

Procede d'application d'un revetement en poudre sur des surfaces pour obtenir l'effet lotus Download PDF

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Publication number
WO2004014575A1
WO2004014575A1 PCT/EP2003/006544 EP0306544W WO2004014575A1 WO 2004014575 A1 WO2004014575 A1 WO 2004014575A1 EP 0306544 W EP0306544 W EP 0306544W WO 2004014575 A1 WO2004014575 A1 WO 2004014575A1
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WO
WIPO (PCT)
Prior art keywords
particles
elevations
sports
self
powder
Prior art date
Application number
PCT/EP2003/006544
Other languages
German (de)
English (en)
Inventor
Markus Oles
Edwin Nun
Original Assignee
Creavis Gesellschaft Für Technologie Und Innovation Mbh
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 Creavis Gesellschaft Für Technologie Und Innovation Mbh filed Critical Creavis Gesellschaft Für Technologie Und Innovation Mbh
Priority to AU2003238516A priority Critical patent/AU2003238516A1/en
Publication of WO2004014575A1 publication Critical patent/WO2004014575A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/08—Processes in which the treating agent is applied in powder or granular form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/06—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/06—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement
    • B08B17/065—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement the surface having a microscopic surface pattern to achieve the same effect as a lotus flower
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23—Oxides
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
    • D06M10/025—Corona discharge or low temperature plasma
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2201/00—Polymeric substrate or laminate
    • B05D2201/02—Polymeric substrate
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C03C2217/42—Coatings comprising at least one inhomogeneous layer consisting of particles only
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/05—Lotus effect

Definitions

  • the present invention relates to a method for producing surfaces with self-cleaning properties by means of powder coating.
  • the state of the art for self-cleaning surfaces is that an aspect ratio of> 1 and a surface energy of less than 20 mN / are required for such self-cleaning surfaces.
  • the aspect ratio is defined here as the quotient of the medium height to the medium width of the structure.
  • the aforementioned criteria are realized in nature, for example in the lotus leaf.
  • the surface of a plant formed from a hydrophobic, wax-like material has elevations that are up to a few ⁇ m apart. Water drops essentially only come into contact with the tips of the elevations. Such water-repellent surfaces are widely described in the literature.
  • the Swiss patent CH-PS 268 258 describes a method in which structured surfaces are produced by applying powders such as kaolin, talc, clay or silica gel. The powders are fixed on the surface by oils and resins based on organosilicon compounds. More recently, particulate systems have been developed which are based on nanoparticles with a very hydrophobic surface, as described, for example, in DE 101 29 116, DE 101 38 036 and DE 101 34477. The ali-binding of the nanoparticles to the substrate takes place either a) through a carrier layer or b) through a direct incorporation of the particles into the polymer / substrate.
  • Electrostatic powder coating processes were also used in the processes mentioned.
  • such methods have been used in the production of self-cleaning surfaces using a carrier layer, the powder particles being applied to the moist adhesive by means of electrostatic coating.
  • this method was also used to dust the nanoparticles onto a moistened (usually with alcohol) surface. All these methods have in common that the workpiece is moistened. This makes it necessary that a very complex drying must be followed. This is a problem particularly in the case of textile webs.
  • the evaporating solvents alcohols
  • the task was therefore to develop a process with which the nanoparticles dry up the workpieces can be applied.
  • the present invention therefore relates to a process for the production of surfaces with self-cleaning properties by applying particles to the surface, as a result of which elevations which are at a distance of 20 nm to 100 ⁇ m and a height of 20 nm to 100 ⁇ m are formed is characterized in that the particles are applied dry by electrostatic spraying of the powder.
  • the present invention also relates to self-cleaning surfaces produced by the process according to the invention and to articles which have such surfaces.
  • the method according to the invention has the advantage that no solvents are used which have to be removed in a complex and often polluting manner.
  • the process according to the invention is very low in emissions and waste water.
  • the method according to the invention is very easy to carry out. It is also particularly suitable for large-scale processes, since the coating can take place very homogeneously and can be adapted to the high web speeds in production. Electrostatic coatings are also widespread in the textile industry and it is therefore often not even necessary to purchase new equipment.
  • the method according to the invention for producing surfaces with self-cleaning properties and the surfaces according to the invention are described below by way of example, without the invention being restricted to these.
  • the process is based on the use of electrostatic spraying to create self-cleaning surfaces.
  • the process for producing surfaces with self-cleaning properties by applying particles to the surface, whereby elevations which are at a distance of 20 nm to 100 ⁇ m and a height of 20 nm to 100 ⁇ m are formed, is characterized in that the application the particles are carried out dry by electrostatically spraying on the powdery particles using a powder spray gun.
  • the method is applicable to all surface materials. In particular, the method is applicable to surfaces which have a material selected from plastics, lacquers, wood, aluminum, glass or metals.
  • the surface can be the surface of a film, a three-dimensional object, a membrane, a textile / nonwoven web, a lamp, an aluminum rim, a piece of furniture or a plastic part.
  • the spraying of powders using electrostatic spraying methods is known per se.
  • a powder spray gun with external high-voltage electrodes is usually used.
  • the electrostatic powder spray gun uses external high-voltage electrodes, the so-called corona electrodes, to charge the powder. Due to the high voltage of z. B. approx. 100 kV ions are generated in the air, which electrostatically charge the powder particles.
  • the powder particles are negatively charged here.
  • high voltage values in the range from 30 to 110 kV, preferably from 40 to 90 kV and very particularly preferably from 50 to 80 kV are used for electrostatic charging.
  • the current strength is preferably from 20 to 75 mA, preferably from 25 to 60 mA.
  • the amount of powder transported in the air stream can be from 0.1 to 100 g / min.
  • the conveying air used for conveying the particles preferably has a pressure of more than 0 to 4 bar, preferably 0.5 to 1.5 bar.
  • the powder particles are transported to the surface of the workpiece to be equipped with a self-cleaning surface by two different forces.
  • the transport takes place through aerodynamic forces due to the flow velocity of the spray jet emerging from the gun mouth.
  • electrical forces There is a potential difference (model of a capacitor) between the spray gun and the workpieces, in which the electrically charged particles are accelerated. Due to their very low conductivity, the powder particles hitting the workpiece give their charge only slowly, usually within hours, from. Influence creates opposing charges of the same size in the workpiece surface, which cause retention due to columbic forces of attraction. Even after the particles have been discharged, the powder particles stick to the workpiece due to van der Waals forces.
  • the air ion flow flowing from the spray gun to the workpiece causes the deposited powder layer to be so strongly charged that the breakthrough field strength for the air is exceeded even with small layer thicknesses.
  • the discharge processes ionize the air between the powder particles and lead to a positive ion current, the so-called counter corona, to the negative corona electrode. Newly arriving, negatively charged powder particles are unloaded and no longer stick to the workpiece, which prevents a further increase in the layer thickness.
  • Two forces act in corona discharge. The electrostatic repulsion among the negatively charged particles and the attractive forces of the positively charged workpiece. As long as the positive attractions prevail, the layer builds up. However, if the repulsive forces dominate among the particles, no more particles are attached.
  • powder spray guns can also be used that achieve the necessary electrostatic charging of the powder exclusively through triboelectric processes. In this process, the powder particles are positively charged by friction. In triboelectric spray guns, the layer thickness is only limited due to the electrostatic repulsion from the already deposited powder layer.
  • Powder spray guns such as are commercially available, can be used. Devices with up to twelve automatic or manual guns are often used in larger industrial plants. Manufacturers of such systems or suitable powder spray guns are, for example, Nordson Kunststoff GmbH in Erkrath.
  • the particles used can be those which have at least one non-conductive material selected from silicates, minerals, metal oxides, silicas, pigments or polymers.
  • the particles can particularly preferably be silicates, doped silicates, minerals, metal oxides, aluminum oxide, silicas or pyrogenic silicates, aerosils or powdered polymers, such as, for example, spray-dried and agglomerated emulsions or be cryomilled PTFE.
  • Particles which have hydrophobic properties are preferably used.
  • Silicas are particularly preferably used as hydrophobic particles.
  • Particles are preferably used which have an average particle diameter of 0.02 to 100 ⁇ m, particularly preferably from 0.01 to 50 ⁇ m and very particularly preferably from 0.1 to 30 ⁇ m. However, particles which are composed of primary particles to form agglomerates or aggregates with a size of 0.2 to 100 ⁇ m are also suitable.
  • the particles used have a structured surface.
  • Particles which have an irregular fine structure in the nanometer range that is to say in the range from 1 to 1000 nm, preferably from 2 to 750 nm and very particularly preferably from 10 to 100 nm, are preferably used on the surface.
  • Fine structure is understood to mean structures which have heights, widths and distances in the areas mentioned.
  • Such particles preferably have at least one compound selected from pyrogenic silica, precipitated silica, aluminum oxide, silicon dioxide, pyrogenic and / or doped silicates or powdery polymers.
  • the particles with the irregular fine structure preferably have elevations with an aspect ratio of greater than 1, particularly preferably greater than 1.5.
  • the aspect ratio is defined as the quotient from the maximum height to the maximum width of the survey.
  • Fig. 1 it is schematically clarified what should be understood by elevations, which are formed by the fine structure of the particles.
  • the figure shows a particle P which has elevations.
  • a selected elevation E which is present on the particles due to the fine structure of the particles, has an aspect ratio of 2.5, calculated as the quotient of the maximum height of the elevation mH ', which is 2.5 and the maximum width mB', which is 1 in proportion.
  • the hydrophobic properties of the particles may be inherent due to the material used for the particles, such as, for example, in the case of polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • hydrophobic particles which, after suitable treatment, have hydrophobic properties, such as, for example, particles treated with at least one compound from the group of the alkylsilanes, the fluoroalkylsilanes or the disilazanes.
  • Particularly suitable particles are hydrophobicized pyrogenic silicas, so-called aerosils.
  • Examples of hydrophobic particles are, for example, Aerosil VPR 411 or Aerosil R 8200.
  • particles which can be rendered hydrophobic by treatment with perfluoroalkylsilane and subsequent tempering are, for example, Aeroperl 90/30, Sipernat silica 350, aluminum oxide C, zirconium silicate, vanadium-doped or Aeroperl P 25/20 ,
  • particles in particular as particles which have an irregular fine structure in the nanometer range on the surface, preference is given to using those particles which have at least one compound selected from pyrogenic or precipitated silica, aluminum oxide, silicon oxide or powdery polymers. It can be advantageous if the particles used have hydrophobic properties. Particularly suitable particles are, inter alia, hydrophobicized pyrogenic silicas, so-called aerosils.
  • particles which have hydrophobic properties.
  • the hydrophobic properties of the particles may be inherent due to the material used for the particles.
  • hydrophobized particles can also be used, e.g. by treatment with at least one compound from the group of alkylsilanes, perfluoroalkylsilanes, paraffins, waxes, fatty acid esters, functionalized long-chain alkane derivatives or alkyldisilazanes, have hydrophobic properties.
  • the method according to the invention can be used to produce self-cleaning surfaces which preferably have elevations formed from particles, the elevations being at a distance of 20 nm to 100 ⁇ m and a height of 20 nm to 100 ⁇ m.
  • the coating formed by the particles preferably has a layer thickness of 20 nm to 120 ⁇ m, particularly preferably from 0.1 to 50 ⁇ m and very particularly preferably from 1 to 20 ⁇ m. It should be pointed out that the coating does not have to be a continuous coating but that under coating in the sense of the present invention the Surface applied particles are to be understood, wherein the individual particles can be present on the surface at intervals of 0 to 10 particle diameters, in particular at intervals of 0 to 3 particle diameters.
  • the surfaces according to the invention preferably have at least one covering with elevations with an average height of 20 nm to 25 ⁇ m and an average distance of 20 nm to 25 ⁇ m, preferably with an average height of 50 nm to 10 ⁇ m and / or an average distance of 50 nm to 10 ⁇ m and very particularly preferably with an average height of 50 nm to 4 ⁇ m and / or an average distance of 50 nm to 4 ⁇ m.
  • the surfaces according to the invention very particularly preferably have elevations with an average height of 0.25 to 1 ⁇ m and an average distance of 0.25 to 1 ⁇ m.
  • the mean distance between the elevations is understood to mean the distance between the highest elevation of one elevation and the next highest elevation. If an elevation has the shape of a cone, the tip of the cone represents the highest elevation of the elevation. If the elevation is a cuboid, the top surface of the cuboid represents the highest elevation of the elevation.
  • the wetting of bodies and thus the self-cleaning property can be described by the contact angle that a drop of water forms with the surface.
  • a contact angle of 0 degrees means complete wetting of the surface.
  • the static contact angle is generally measured using devices in which the contact angle is optically determined.
  • Static contact angles of less than 125 ° are usually measured on smooth hydrophobic surfaces.
  • the present self-cleaning surfaces have static contact angles of preferably greater than 130 °, preferably greater than 140 ° and very particularly preferably greater than 145 °.
  • a surface only has good self-cleaning properties if it has a difference between the advancing and retreating angles of at most 10 °, which is why surfaces according to the invention preferably have a difference between the advancing and retracting angles of less than 10 °, preferably less than 5 ° and very particularly preferably have less than 4 °.
  • a drop of water is placed on the surface by means of a cannula and the drops on the surface are enlarged by adding water through the cannula. During the enlargement, the edge of the drop slides over the The surface and the contact angle are determined as progression angles.
  • the retraction angle is measured on the same drop, only the water is withdrawn from the drop through the cannula and the contact angle is measured while the drop is being reduced.
  • the difference between the two angles is called hysteresis. The smaller the difference, the less the interaction of the water drop with the surface of the surface and the better the lotus effect.
  • the elevations formed by the particles are only fixed to the surface via electrostatic interactions or van-der-Waals forces. Despite these relatively weak forces, the particles preferably adhere to the surface at least so firmly that a pulse of more than 12 mNs is required to detach the particles from the surface. It is obvious that such a self-cleaning surface on textiles does not survive a normal washing cycle.
  • the surface according to the invention can be a surface of a textile, a film, a three-dimensional object, a membrane, a textile / nonwoven web, a truck tarpaulin, a hygiene fleece, a diaper or other household appliances.
  • the method according to the invention can e.g. For coating objects that are exposed to high levels of dirt and water, in particular for the outdoor area, skiing, alpine sports, motorsport, motorcycle sports, motorcross sports, sailing, textiles for the leisure sector and for coating technical textiles selected from tents, awnings, umbrellas , Tablecloths, convertible tops, technical textiles or work clothes can be used.
  • Objects with a surface according to the invention can e.g. Films, articles of daily use, sporting goods, textiles, clothing and advertising media, awnings.
  • FIG. 1 schematically shows a particle P which has elevations.
  • a selected elevation E which is present on the particle due to the fine structure of the particles, has an aspect ratio of 2.5, calculated as the quotient of the maximum height of the elevation mH ', which is 2.5 and the maximum width mB', in relation to this is 1.
  • FIG. 2 shows a scanning electron microscope (SEM) image of a polypropylene nonwoven coated with Aerosil R 8200.
  • FIG. 3 shows a SEM image of the polypropylene nonwoven from FIG. 2 coated with Aerosil R 8200 in a tenfold magnification.
  • the particles applied to the fiber are very easy to see.
  • a PP fleece (VS2050, Freudenberg) with 50 g / m 2 is placed in an electrostatic coating chamber (type Surecoat, Nordson). The following parameters were selected for the electrostatic coating system:
  • Aerosil was applied directly to the lying fleece and the gun was moved over the surface at a speed of approx. 6 m / min.
  • the supernatant Aerosil was collected with an electrically uncharged metal roller that was passed over the treated nonwoven.
  • Example 1 The parameters of the coating system were set as in Example 1. However, the speed at which the pistol was moved over the fleece was changed. The speed here is only 2 m / min. As in Example 1, the Aerosil was applied directly to the surface. The subsequent characterization of the surface showed a very good roll angle of 1.8 °, which was 0.6 ° smaller than in Example 1. A water column of 60 cm could be built up on the surface.

Abstract

Procédé de production de surfaces autonettoyantes à l'aide d'un procédé d'application de revêtement à sec. Ledit procédé permet de produire des surfaces autonettoyantes possédant des élévations formées par des particules qui sont déposées à sec sur la surface selon un procédé électrostatique de pulvérisation de poudre. Le procédé selon la présente invention permet de rendre autonettoyants des textiles et d'autres objets, présentant en particulier des surfaces en plastique.
PCT/EP2003/006544 2002-07-25 2003-06-20 Procede d'application d'un revetement en poudre sur des surfaces pour obtenir l'effet lotus WO2004014575A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003238516A AU2003238516A1 (en) 2002-07-25 2003-06-20 Method for powder coating surfaces in order to produce the lotus effect

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10233829A DE10233829A1 (de) 2002-07-25 2002-07-25 Verfahren zur Pulverbeschichtung von Oberflächen zur Erzeugung des Lotus-Effektes
DE10233829.9 2002-07-25

Publications (1)

Publication Number Publication Date
WO2004014575A1 true WO2004014575A1 (fr) 2004-02-19

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PCT/EP2003/006544 WO2004014575A1 (fr) 2002-07-25 2003-06-20 Procede d'application d'un revetement en poudre sur des surfaces pour obtenir l'effet lotus

Country Status (3)

Country Link
AU (1) AU2003238516A1 (fr)
DE (1) DE10233829A1 (fr)
WO (1) WO2004014575A1 (fr)

Cited By (2)

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WO2008071202A1 (fr) 2006-12-11 2008-06-19 Sca Hygiene Products Ab Article absorbant doté d'une couche fortement hydrophobe
BE1018512A3 (nl) * 2009-03-19 2011-02-01 Catteeuw Kurt Johan Reclameboodschap.

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DE102004046232A1 (de) * 2004-09-22 2006-04-06 Sew-Eurodrive Gmbh & Co. Kg Antriebskomponente
DE102006014875A1 (de) 2006-03-30 2007-10-04 Wacker Chemie Ag Partikel mit strukturierter Oberfläche
EP2444545B1 (fr) * 2007-04-17 2014-03-12 HeiQ Materials AG Equipements repoussant l'eau, l'huile et la saleté sur des fibres et des structures plates textiles
CN102189071A (zh) * 2010-03-07 2011-09-21 张镜 物体表面纳米粒子处理技术（间接法）
DE102012022757A1 (de) 2012-11-22 2013-01-24 Sew-Eurodrive Gmbh & Co. Kg Antriebskomponente
GB2565825A (en) * 2017-08-24 2019-02-27 Richard Parker Andrew Surface microstructures

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DE2642587A1 (de) * 1975-10-03 1977-04-07 Masuda Senichi Elektrostatische farbauftrageinrichtung
WO1996004123A1 (fr) * 1994-07-29 1996-02-15 Wilhelm Barthlott Surfaces autonettoyantes d'objets et leur procede de production
EP0933388A2 (fr) * 1998-01-30 1999-08-04 CREAVIS Gesellschaft für Technologie und Innovation mbH Surfaces structurelles avec propriétés hydrophobes
WO2001074739A1 (fr) * 2000-04-01 2001-10-11 Dmc?2¿ Degussa Metals Catalyts Cerdec Ag Substrats en verre, en ceramique et en metal pourvus d'une surface auto-nettoyante, leur procede de production et leur utilisation
DE10063739A1 (de) * 2000-12-21 2002-06-27 Dmc2 Degussa Metals Catalysts Substrate mit selbstreinigender Oberfläche, Verfahren zu deren Herstellung und deren Verwendung

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DE2642587A1 (de) * 1975-10-03 1977-04-07 Masuda Senichi Elektrostatische farbauftrageinrichtung
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