WO2000058415A1 - Method and device for the loss-free transport of liquids - Google Patents

Method and device for the loss-free transport of liquids Download PDF

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Publication number
WO2000058415A1
WO2000058415A1 PCT/EP2000/002426 EP0002426W WO0058415A1 WO 2000058415 A1 WO2000058415 A1 WO 2000058415A1 EP 0002426 W EP0002426 W EP 0002426W WO 0058415 A1 WO0058415 A1 WO 0058415A1
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WO
WIPO (PCT)
Prior art keywords
liquid
liquids
elevations
hydrophilic
transport
Prior art date
Application number
PCT/EP2000/002426
Other languages
German (de)
French (fr)
Inventor
Wilhelm Barthlott
Christoph Neinhuis
Original Assignee
Wilhelm Barthlott
Christoph Neinhuis
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 Wilhelm Barthlott, Christoph Neinhuis filed Critical Wilhelm Barthlott
Priority to AU38132/00A priority Critical patent/AU3813200A/en
Publication of WO2000058415A1 publication Critical patent/WO2000058415A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D11/00Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/20Details of walls made of plastics material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/0275Interchangeable or disposable dispensing tips
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/18Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15DFLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00Influencing flow of fluids
    • F15D1/02Influencing flow of fluids in pipes or conduits
    • F15D1/06Influencing flow of fluids in pipes or conduits by influencing the boundary layer
    • F15D1/065Whereby an element is dispersed in a pipe over the whole length or whereby several elements are regularly distributed in a pipe
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00Coatings; Surface treatments
    • F28F2245/02Coatings; Surface treatments hydrophilic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00Coatings; Surface treatments
    • F28F2245/04Coatings; Surface treatments hydrophobic

Definitions

  • the present invention relates to an apparatus and a method for the lossless transport or emptying of hydrophilic liquids.
  • Examples of this are surfaces made of the extremely hydrophobic Teflon or the extremely hydrophilic "no-drop coatings" on which water can run off without dripping.
  • the CH-PS-26 82 58 describes water-repellent surfaces that have a contact angle with water over 120 °. You will be won by applying powders such as kaolin, talc, clay or silica gel on a base, the powder being previously hydrophobicized by organic silicon compounds. It is applied together with curable resins or from solutions with organic solvents.
  • powders such as kaolin, talc, clay or silica gel
  • US Pat. No. 3,354,022 describes a water-repellent surface with elevations and depressions and an air content of at least 60%, in which a surface contact angle of more than 90 ° is established.
  • JP-A-62-191447 describes a method to increase the water repellency of a surface. For this purpose, a plasma polymer film is applied, this is roughened by etching and a second plasma polymer film is applied.
  • JP-A-3-174279 (abstract) describes a method for producing matt, decorative surfaces on sheets or foils. They are produced by lacquers which are hardened by means of ionizing radiation and in which patterns are embossed in an unspecified manner. They are then fully cured by further radiation.
  • WO-A-96/04123 describes self-cleaning surfaces of objects which have an artificial surface structure of elevations and depressions, the distance between the elevations being in the range from 5 to 200 ⁇ m and the height of the elevations being in the range from 5 to 100 ⁇ m .
  • the object of the present invention is to provide a device with which hydrophilic liquids can be transported, stored and emptied without loss.
  • the task is solved by a Device with the features of claim 1.
  • the devices according to the invention for lossless transport or emptying of hydrophilic liquids are characterized in that the device has elevations and depressions on the side facing the liquid, the distance between the elevations being in the range from 0.1 to 200 ⁇ m and the height of the elevations is in the range from 0.1 to 100 ⁇ m and at least the elevations are hydrophobic.
  • the devices according to the invention are typically curved on the side facing the liquid, so that this curved surface delimits an internal volume.
  • the devices are preferably curved concavely.
  • the devices according to the invention can be pipes or troughs through which the hydrophilic liquid is transported in order to get from a point A to a point B. It can also be a spoon or a trowel with which a hydrophilic liquid can be removed from a supply and transported to another location. In this case it is particularly advantageous if all sides of the device that come into contact with the liquid have the elevations and depressions according to the invention.
  • the invention also relates to a bowl, a tank or a canister in which liquids can be stored. These can be emptied by pouring out, with no residues of the liquid adhering to the devices due to the special surface structure.
  • the device according to the invention can also be a funnel which is used during the transfer of a liquid. All these devices have the advantage that the liquids do not adhere. ben, so that on the one hand losses are avoided and on the other hand cleaning steps are omitted, so that the devices according to the invention can be better used for the changing transport of various liquids.
  • Suitable hydrophilic liquids are, for example, water, aqueous solutions, aqueous suspensions or dispersions. Viscous liquids that are difficult to transport in conventional devices due to their adherence are particularly suitable.
  • the devices according to the invention can be used for the transport, storage, application and metering of liquids, in particular of small amounts of liquid.
  • the devices according to the invention preferably have a contact angle of over 150 ° with the liquid.
  • Devices of this type can be produced either by creating the surface structures already during manufacture, for example from hydrophobic polymers, or by creating them subsequently, either by subsequent embossing or etching or by gluing on a powder from the hydrophobic polymers. Finally, it is possible to create such surfaces of devices by subsequently making water-repellent to previously manufactured devices with the desired structures.
  • One possibility for subsequent, durable waterproofing is the subsequent silanization of previously produced surfaces with the desired structures. Silanization can take place on all materials that are naturally hydrophilic but are able to react with the reactive groups of the silanes, so that the surface ultimately consists of the hydrophobic residues of the silanes.
  • the objects can be made from the outset in forms that have the negative of the desired surface structure. It is also possible to apply the hydrophobic polymers in the form of solutions and / or dispersions which, when they dry and set, lead to the desired surface structures. Structures of this type arise, for example, from self-organizing polymers or under conditions which are known in principle from the production of matt lacquer surfaces.
  • embossing can be done, for example, by heated or heatable stamps.
  • the etching can be carried out using the known chemical etching means or by physical methods such as ion etching with oxygen or other irradiations, which lead to a roughening of the surface and a surface structure that can be used according to the invention.
  • the devices according to the invention can be used in many areas.
  • the devices can be used as pipette tips for dosing small amounts of liquid in biotechnology. be set so that small amounts of liquid of different composition can be pipetted without changing the pipette tip.
  • the devices according to the invention could also be used to measure amounts of precipitation. Due to the special surface structure of the device, liquids from the air do not adhere, for example in the case of fog, so that a more precise measurement of corresponding amounts of precipitation is possible.
  • the device according to the invention is also suitable for transporting highly viscous, hydrophilic adhesive preparations or precursors thereof through pipes as part of the manufacturing process.

Abstract

The invention relates to a device for the loss-free transport or emptying of hydrophilic liquids, characterized in that the device has raised areas and cavities on the side facing the liquid, in that the distance between the raised areas is between 0.1 and 200 νm and the height of said raised areas between 0.1 and 100 νm, and in that at least the raised areas are hydrophobic.

Description

Vorrichtung und Verfahren zum verlustfreien Transport von Flüssigkeiten Device and method for the lossless transport of liquids
Gegenstand der vorliegenden Erfindung ist eine Vorrichtung und ein Verfahren zum verlustfreien Transport oder Entleeren von hydrophilen Flüssigkeiten.The present invention relates to an apparatus and a method for the lossless transport or emptying of hydrophilic liquids.
Beim Transportieren, Lagern und Entleeren von Flüssigkeiten kommt es durch die Benetzung des Transport- oder Lagerbehältnisses zur Anhaf- tung der zu transportierenden Flüssigkeit am Behältnis. Dabei sind nicht nur die Verluste der Flüssigkeiten von relevant sondern insbesondere die für die Reinigung benötigte Zeit und die durch den Reinigungsvorgang entstehenden Kosten. Es ist daher sowohl ökonomisch als auch ökologisch wünschenswert, Flüssigkeiten möglichst verlustfrei zu transportieren.When transporting, storing and emptying liquids, wetting the transport or storage container causes the liquid to be transported to adhere to the container. Not only are the losses of the liquids relevant, but in particular the time required for cleaning and the costs incurred by the cleaning process. It is therefore economically and ecologically desirable to transport liquids with as little loss as possible.
Es sind verschiedene technische Lösungen bekannt, um die Benetzung von Oberflächen zu verringern.Various technical solutions are known to reduce the wetting of surfaces.
So haben die Hersteller von Polymerfolien oder Polymerplatten versucht, dieses Problem zu lösen, indem sie möglichst glatte Oberflächen erzeugen und diese Oberflächen entweder extrem hydrophob oder extrem hydrophil gemacht haben.The manufacturers of polymer films or polymer plates have attempted to solve this problem by producing surfaces that are as smooth as possible and have made these surfaces either extremely hydrophobic or extremely hydrophilic.
Beispiele hierfür sind Oberflächen aus dem extrem hydrophoben Teflon oder die extrem hydrophilen "No-drop-Beschichtungen", auf denen Wasser tropfenfrei ablaufen kann.Examples of this are surfaces made of the extremely hydrophobic Teflon or the extremely hydrophilic "no-drop coatings" on which water can run off without dripping.
Die CH-PS-26 82 58 beschreibt wasserabstoßende Oberflächen, die mit Wasser einen Kontaktwinkel über 120° aufweisen. Sie werden gewonnen durch Aufbringen von Pulvern wie Kaolin, Talkum, Ton oder Silikagel auf einer Unterlage, wobei das Pulver zuvor hydrophobiert wird durch organische Siliciumverbindungen. Die Aufbringung erfolgt zusammen mit härtbaren Harzen oder aus Lösungen mit organischen Lösungsmitteln.The CH-PS-26 82 58 describes water-repellent surfaces that have a contact angle with water over 120 °. You will be won by applying powders such as kaolin, talc, clay or silica gel on a base, the powder being previously hydrophobicized by organic silicon compounds. It is applied together with curable resins or from solutions with organic solvents.
Die US-P-3, 354,022 beschreibt eine wasserabstoßende Oberfläche mit Erhöhungen und Vertiefungen und einem Luftgehalt von mindestens 60%, bei der sich ein Oberflächenkontaktwinkel von mehr als 90° einstellt.US Pat. No. 3,354,022 describes a water-repellent surface with elevations and depressions and an air content of at least 60%, in which a surface contact angle of more than 90 ° is established.
Die JP-A-62-191447 beschreibt ein Verfahren, um die Wasserabstoßung einer Oberfläche zu erhöhen. Dazu wird ein Plasmapolymerfilm aufgetragen, dieser durch Ätzen angerauht und ein zweiter Plasmapolymerfilm aufgetragen.JP-A-62-191447 describes a method to increase the water repellency of a surface. For this purpose, a plasma polymer film is applied, this is roughened by etching and a second plasma polymer film is applied.
Die JP-A-3-174279 (Abstract) beschreibt ein Verfahren zur Herstellung von matten, dekorativen Oberflächen auf Bögen oder Folien. Sie werden hergestellt durch Lacke, die mittels ionisierender Strahlen angehärtet und in welche in nicht spezifizierter Weise nicht näher spezifizierte Muster aufgeprägt werden. Sie werden dann durch weitere Bestrahlung völlig ausgehärtet.JP-A-3-174279 (abstract) describes a method for producing matt, decorative surfaces on sheets or foils. They are produced by lacquers which are hardened by means of ionizing radiation and in which patterns are embossed in an unspecified manner. They are then fully cured by further radiation.
Die WO-A-96/04123 beschreibt selbstreinigende Oberflächen von Gegenständen, die eine künstliche Oberflächenstruktur aus Erhebungen und Vertiefungen aufweisen, wobei der Abstand zwischen den Erhebungen im Bereich von 5 bis 200 μm und die Höhe der Erhebungen im Bereich von 5 bis 100 μm liegen.WO-A-96/04123 describes self-cleaning surfaces of objects which have an artificial surface structure of elevations and depressions, the distance between the elevations being in the range from 5 to 200 μm and the height of the elevations being in the range from 5 to 100 μm .
Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur Verfügung zu stellen, mit der sich hydrophile Flüssigkeiten verlustfrei transportieren, lagern und entleeren lassen. Gelöst wird die Aufgabe durch eine Vorrichtung mit den Merkmalen des Patentanspruchs 1. Die erfindungsgemäßen Vorrichtungen zum verlustfreien Transport oder Entleeren von hydrophilen Flüssigkeiten sind dadurch gekennzeichnet, dass die Vorrichtung auf der der Flüssigkeit zugewandten Seite Erhebungen und Vertiefungen aufweist, wobei der Abstand zwischen den Erhebungen im Bereich von 0,1 bis 200 μm und die Höhe der Erhebungen im Bereich von 0,1 bis 100 μm liegt und zumindest die Erhebungen hydrophob sind.The object of the present invention is to provide a device with which hydrophilic liquids can be transported, stored and emptied without loss. The task is solved by a Device with the features of claim 1. The devices according to the invention for lossless transport or emptying of hydrophilic liquids are characterized in that the device has elevations and depressions on the side facing the liquid, the distance between the elevations being in the range from 0.1 to 200 μm and the height of the elevations is in the range from 0.1 to 100 μm and at least the elevations are hydrophobic.
Typischerweise sind die erfindungsgemäßen Vorrichtungen auf der der Flüssigkeit zugewandten Seite gewölbt, so dass diese gewölbte Fläche ein Innenvolumen abgrenzt. Vorzugsweise sind die Vorrichtungen konkav gewölbt.The devices according to the invention are typically curved on the side facing the liquid, so that this curved surface delimits an internal volume. The devices are preferably curved concavely.
Bei den erfindungsgemäßen Vorrichtungen kann es sich um Rohre oder Rinnen handeln, durch die die hydrophile Flüssigkeit hindurch transportiert wird, um von einem Punkt A zu einem Punkt B zu gelangen. Es kann sich auch um einen Löffel oder um eine Kelle handeln, mit der eine hydrophile Flüssigkeit aus einem Vorrat entnommen und an einen anderen Ort transportiert werden kann. In diesem Fall ist es besonders vorteilhaft, wenn alle mit der Flüssigkeit in Kontakt kommenden Seiten der Vorrichtung die erfindungsgemäßen Erhebungen und Vertiefungen aufweisen.The devices according to the invention can be pipes or troughs through which the hydrophilic liquid is transported in order to get from a point A to a point B. It can also be a spoon or a trowel with which a hydrophilic liquid can be removed from a supply and transported to another location. In this case it is particularly advantageous if all sides of the device that come into contact with the liquid have the elevations and depressions according to the invention.
Auch eine Schale, ein Tank oder ein Kanister in dem Flüssigkeiten aufbewahrt werden können, sind Gegenstand der Erfindung. Diese können durch Ausgießen entleert werden, wobei aufgrund der besonderen Oberflächenstruktur keine Reste der Flüssigkeit an den Vorrichtungen haften bleiben. Die erfindungsgemäße Vorrichtung kann auch ein Trichter sein, der während des Umfüllens einer Flüssigkeit verwendet wird. Alle diese Vorrichtungen haben den Vorteil, dass die Flüssigkeiten nicht haften blei- ben, so dass zum Einen Verluste vermieden werden und zum Anderen Reinigungsschritte entfallen, so dass die erfindungsgemäßen Vorrichtungen besser für den wechselnden Transport verschiedenster Flüssigkeiten eingesetzt werden können. Geeignete hydrophile Flüssigkeiten sind z.B. Wasser, wässrige Lösungen, wässrige Suspensionen oder Dispersionen. Besonders geeignet sind viskose Flüssigkeiten, die bei herkömmlichen Vorrichtungen aufgrund der Anhaftung nur mit Schwierigkeiten transportiert werden können. Die erfindungsgemäßen Vorrichtungen können zum Transport, zur Lagerung, zur Applikation und Dosierung von Flüssigkeiten, insbesondere von kleinen Flüssigkeitsmengen verwendet werden.The invention also relates to a bowl, a tank or a canister in which liquids can be stored. These can be emptied by pouring out, with no residues of the liquid adhering to the devices due to the special surface structure. The device according to the invention can also be a funnel which is used during the transfer of a liquid. All these devices have the advantage that the liquids do not adhere. ben, so that on the one hand losses are avoided and on the other hand cleaning steps are omitted, so that the devices according to the invention can be better used for the changing transport of various liquids. Suitable hydrophilic liquids are, for example, water, aqueous solutions, aqueous suspensions or dispersions. Viscous liquids that are difficult to transport in conventional devices due to their adherence are particularly suitable. The devices according to the invention can be used for the transport, storage, application and metering of liquids, in particular of small amounts of liquid.
Die erfindungsgemäßen Vorrichtungen weisen bevorzugt einen Kontaktwinkel von über 150° mit der Flüssigkeit auf.The devices according to the invention preferably have a contact angle of over 150 ° with the liquid.
Derartige Vorrichtungen lassen sich herstellen entweder dadurch, dass die Oberflächenstrukturen bereits bei der Herstellung beispielsweise aus hydrophoben Polymeren geschaffen werden oder erst nachträglich geschaffen werden, und zwar entweder durch nachträgliches Prägen oder Ätzen oder durch Aufkleben eines Pulvers aus den hydrophoben Polymeren. Schließlich ist es möglich, derartige Oberflächen von Vorrichtungen zu schaffen durch nachträgliches haltbares Hydrophobieren von zuvor hergestellten Vorrichtungen mit den gewünschten Strukturen. Eine Möglichkeit zum nachträglichen haltbaren Hydrophobieren ist die nachträgliche Silanisierung von zuvor hergestellten Oberflächen mit den gewünschten Strukturen. Eine Silanisierung kann auf allen Materialien erfolgen, die von Natur aus hydrophil sind, aber in der Lage sind, mit den reaktiven Gruppen der Silane zu reagieren, so dass letztendlich die Oberfläche aus den hydrophoben Resten der Silane besteht.Devices of this type can be produced either by creating the surface structures already during manufacture, for example from hydrophobic polymers, or by creating them subsequently, either by subsequent embossing or etching or by gluing on a powder from the hydrophobic polymers. Finally, it is possible to create such surfaces of devices by subsequently making water-repellent to previously manufactured devices with the desired structures. One possibility for subsequent, durable waterproofing is the subsequent silanization of previously produced surfaces with the desired structures. Silanization can take place on all materials that are naturally hydrophilic but are able to react with the reactive groups of the silanes, so that the surface ultimately consists of the hydrophobic residues of the silanes.
Um die gewünschten Oberflächenstrukturen bereits bei der Herstellung aus hydrophoben Materialien zu schaffen, können die Gegenstände von vornherein in Formen hergestellt werden, die das Negativ der gewünschten Oberflächenstruktur aufweisen. Weiterhin ist es möglich, die hydrophoben Polymere in Form von Lösungen und/oder Dispersionen aufzutragen, die beim Antrocknen und Abbinden zu den gewünschten Oberflächenstrukturen führen. Derartige Strukturen entstehen beispielsweise aus selbstorganisierenden Polymeren oder unter Bedingungen, wie sie von der Herstellung von Mattlackoberflächen prinzipiell bekannt sind.To the desired surface structures already during manufacture Creating from hydrophobic materials, the objects can be made from the outset in forms that have the negative of the desired surface structure. It is also possible to apply the hydrophobic polymers in the form of solutions and / or dispersions which, when they dry and set, lead to the desired surface structures. Structures of this type arise, for example, from self-organizing polymers or under conditions which are known in principle from the production of matt lacquer surfaces.
Sofern es nicht möglich oder nicht erwünscht ist, die gewünschten Oberflächenstrukturen von vornherein zu schaffen, kann dies auch nachträglich geschehen, und zwar beispielsweise durch nachträgliches Prägen oder Ätzen. Das Prägen kann beispielsweise durch geheizte oder heizbare Prägestempel erfolgen. Das Ätzen kann erfolgen mit den bekannten Mitteln der chemischen Ätzung oder durch physikalische Methoden wie der Ionenätzung mit Sauerstoff oder anderen Bestrahlungen, die zu einer Aufrauhung der Oberfläche und einer damit erfindungsgemäß brauchbaren Oberflächenstruktur führen.If it is not possible or not desirable to create the desired surface structures from the outset, this can also be done subsequently, for example by subsequent embossing or etching. The embossing can be done, for example, by heated or heatable stamps. The etching can be carried out using the known chemical etching means or by physical methods such as ion etching with oxygen or other irradiations, which lead to a roughening of the surface and a surface structure that can be used according to the invention.
Weiterhin hat sich gezeigt, dass es auch möglich ist, die gewünschte O- berflächenstruktur zu erhalten durch Aufkleben eines Pulvers aus den hydrophoben Polymeren. Pulver von hydrophoben Polymeren mit der gewünschten Korngröße sind erhältlich. Optimale Ergebnisse werden aber nur erzielt, wenn man Pulver einsetzt mit relativ enger Korngrößenverteilung.Furthermore, it has been shown that it is also possible to obtain the desired surface structure by sticking on a powder made of the hydrophobic polymers. Powders of hydrophobic polymers with the desired grain size are available. However, optimal results can only be achieved if powder is used with a relatively narrow particle size distribution.
Die erfindungsgemäßen Vorrichtungen lassen sich in vielen Bereichen einsetzen. Beispielsweise können die Vorrichtungen als Pipetteπspitzen zum Dosieren von kleinen Flüssigkeitsmengen in der Biotechnologie ein- gesetzt werden, so um kleine Flüssigkeitsmengen verschiedener Zusammensetzung ohne Wechsel der Pipettenspitze zu pipettieren.The devices according to the invention can be used in many areas. For example, the devices can be used as pipette tips for dosing small amounts of liquid in biotechnology. be set so that small amounts of liquid of different composition can be pipetted without changing the pipette tip.
Als ein weiteres Beispiel könnten die erfindungsgemäßen Vorrichtungen auch zur Messung von Niederschlagsmengen eingesetzt werden. Aufgrund der besonderen Oberflächenstruktur der Vorrichtung kommt es nicht zum Anhaften von Flüssigkeiten aus der Luft, beispielsweise im Falle von Nebel, so dass eine exaktere Messung entsprechender Niederschlagsmengen möglich ist.As a further example, the devices according to the invention could also be used to measure amounts of precipitation. Due to the special surface structure of the device, liquids from the air do not adhere, for example in the case of fog, so that a more precise measurement of corresponding amounts of precipitation is possible.
Die erfindungsgemäße Vorrichtung eignet sich auch zum Transport von hochviskosen hydrophilen Klebstoffzubereitung oder Vorstufen davon durch Rohre im Rahmen des Herstellungsprozesses. The device according to the invention is also suitable for transporting highly viscous, hydrophilic adhesive preparations or precursors thereof through pipes as part of the manufacturing process.

Claims

Patentansprüche claims
1. Vorrichtung zum verlustfreien Transport oder Entleerung von hydrophilen Flüssigkeiten, dadurch gekennzeichnet, dass die Vorrichtung auf der der Flüssigkeit zugewandten Seite Erhebungen und Vertiefungen aufweist, wobei der Abstand zwischen den Erhebungen im Bereich von 0,1 bis 200 μm und die Höhe der Erhebungen im Bereich von 0,1 bis 100 μm liegt und zumindest die Erhebungen hydrophob sind.1. Device for lossless transport or emptying of hydrophilic liquids, characterized in that the device has elevations and depressions on the liquid-facing side, the distance between the elevations in the range from 0.1 to 200 μm and the height of the elevations in the Range is 0.1 to 100 microns and at least the elevations are hydrophobic.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die der Flüssigkeit zugewandte Seite konkav gewölbt ist.2. Device according to claim 1, characterized in that the side facing the liquid is curved concavely.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es sich um ein Rohr, eine Rinne, einen Löffel, eine Schale, einen Tank, einen Kanister oder einen Trichter handelt.3. Device according to claim 1 or 2, characterized in that it is a tube, a channel, a spoon, a bowl, a tank, a canister or a funnel.
4. Verfahren zum verlustfreien Transport von hydrophilen Flüssigkeiten, wobei die Flüssigkeit durch eine Vorrichtung nach einem der Ansprüche 1 bis 3 transportiert wird.4. A method for the lossless transport of hydrophilic liquids, the liquid being transported by a device according to one of claims 1 to 3.
5. Verfahren zum verlustfreien Entleeren von hydrophilen Flüssigkeiten, wobei die Flüssigkeit aus einer Vorrichtung nach einem der Ansprüche 1 bis 3 entleert wird.5. A method for lossless emptying of hydrophilic liquids, the liquid being emptied from a device according to one of claims 1 to 3.
6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Flüssigkeit viskos ist.6. The method according to claim 4 or 5, characterized in that the liquid is viscous.
7. Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Flüssigkeit wässrig ist. 7. The method according to any one of claims 4 to 6, characterized in that the liquid is aqueous.
8. Verfahren nach einem der Ansprüche 4 oder 7, dadurch gekennzeichnet, dass die Flüssigkeit eine Suspension oder Dispersion ist.8. The method according to any one of claims 4 or 7, characterized in that the liquid is a suspension or dispersion.
9. Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 3 zur Applikation und Dosierung von Flüssigkeiten. 9. Use of the device according to one of claims 1 to 3 for the application and metering of liquids.
PCT/EP2000/002426 1999-03-25 2000-03-18 Method and device for the loss-free transport of liquids WO2000058415A1 (en)

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AU38132/00A AU3813200A (en) 1999-03-25 2000-03-18 Method and device for the loss-free transport of liquids

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DE19913601.7 1999-03-25
DE19913601A DE19913601C1 (en) 1999-03-25 1999-03-25 Apparatus for transporting or discharging hydrophilic liquids has hydrophobic peaks or recesses on the side facing the liquid

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Cited By (7)

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US8629070B2 (en) * 2001-04-12 2014-01-14 Evonik Degussa Gmbh Flat textile structures with self-cleaning and water-repellent surface
FR2829406A1 (en) * 2001-09-12 2003-03-14 Commissariat Energie Atomique Self-cleaning and/or anti-staining and/or anti-condensation surfaces incorporating small protuberances
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US8163560B2 (en) 2003-12-04 2012-04-24 Roche Diagnostics Operations, Inc. Coated test elements
US8295522B2 (en) 2006-08-31 2012-10-23 Widex A/S Filter for a hearing aid and a hearing aid
JP2010515312A (en) * 2007-01-03 2010-05-06 ヴェーデクス・アクティーセルスカプ Hearing aid component and method of making a hearing aid component
US8763238B2 (en) 2007-01-03 2014-07-01 Widex A/S Method of manufacturing a component for a hearing aid
US8129195B2 (en) 2007-07-03 2012-03-06 Roche Diagnostics Operations, Inc. Method for the production of an analytical element
US8828333B2 (en) 2007-07-03 2014-09-09 Roche Diagnotics Operations, Inc. Method for the production of a microfluidic system on a polymer surface

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