EP1242195B1 - Method for producing an anti-adherent coating, anti-adherent coating and use of an anti-adherent coating - Google Patents

Method for producing an anti-adherent coating, anti-adherent coating and use of an anti-adherent coating Download PDF

Info

Publication number
EP1242195B1
EP1242195B1 EP00991647A EP00991647A EP1242195B1 EP 1242195 B1 EP1242195 B1 EP 1242195B1 EP 00991647 A EP00991647 A EP 00991647A EP 00991647 A EP00991647 A EP 00991647A EP 1242195 B1 EP1242195 B1 EP 1242195B1
Authority
EP
European Patent Office
Prior art keywords
fact
substrate
layer
stick coating
base layer
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.)
Expired - Lifetime
Application number
EP00991647A
Other languages
German (de)
French (fr)
Other versions
EP1242195A2 (en
Inventor
Volkmar Eigenbrod
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.)
Rhenotherm Kunststoffbeschichtungs GmbH
Original Assignee
Rhenotherm Kunststoffbeschichtungs GmbH
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 Rhenotherm Kunststoffbeschichtungs GmbH filed Critical Rhenotherm Kunststoffbeschichtungs GmbH
Publication of EP1242195A2 publication Critical patent/EP1242195A2/en
Application granted granted Critical
Publication of EP1242195B1 publication Critical patent/EP1242195B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B05D5/083—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 involving the use of fluoropolymers
    • B05D5/086—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 involving the use of fluoropolymers having an anchoring layer

Definitions

  • the invention relates to a method for producing a non-stick coating with a low-adhesion surface as well as the non-stick coating itself and uses of this non-stick coating.
  • a non-stick coating is within the scope of the present invention to understand a layer structure
  • the layer structure according to the invention is such that it is, for example, for rollers or others Machine parts in the adhesive, rubber and / or paint processing Industry is particularly well suited. This is particularly relevant where certain Surface areas, for example of labels, adhesive tapes, Diapers and other products of paper, glue, lacquer and Rubber industry, which should have the property that there is adhesive or other sticky media does not adhere; this allows targeted limited Adhesive areas are created while the neighboring areas can not stick. I.e. the adhesive or other sticky media can be applied mechanically in a targeted and localized manner.
  • the appropriately coated tools such as rollers in the Paper industry for the production of multilayer or laminated paper remain glue-free.
  • Non-stick coatings of the type mentioned are known. she based on the so-called lotus effect. Certain plant leaves, namely the leaves of the lotus flower (Nelumbo nucitera), are not smooth in the microscopic range, but they have a surface with regular micro surveys. This configuration ensures that water drops when pearls off Pick up and remove dirt particles. This ensures that the surface of the leaf of the lotus flower is always kept clean becomes.
  • surface coatings are made using fluoroplastics (e.g. Teflon) known to result in a harder surface to lead.
  • fluoroplastics e.g. Teflon
  • the fluoroplastic is placed on a carrier layer elevated temperatures (approx. 400 ° C) sintered to a stable Get composite.
  • this will make the surface of the substrate smooth; a lotus effect cannot be obtained in this way.
  • EP 0 485 801 B1 discloses a heat exchanger which has a Has a plurality of plate-shaped ribs. On the rib surface is a mixture applied, which consists of a silicone resin compound containing solution and finely divided inorganic particles. Silicone is used as the base layer. Still there provided that the surface of the layer was distributed regularly Has micro surveys.
  • DE 36 44 211 A1 discloses a method for producing a Soleplate. Through the sequence of different process steps becomes a metallic carrier substrate with a low-adhesion Provide plastic surface that is as smooth as possible and is sealed. An organic type binder is used for sealing used.
  • the invention is therefore based on the object of providing a method for producing a non-stick coating and a non-stick coating which avoids the aforementioned disadvantages and at the same time maintains the advantages described.
  • the non-stick coating should therefore have the lotus effect, ie have the double structure with micro elevations. At the same time, however, the coating should be resistant to solvents and corrosion and also suitable for use in the food industry.
  • the idea of the invention is based on the fact that on a Substrate, the surface of which can be structured or obtains a surface structure by applying a base layer, a plastic layer is applied. This layer has a microstructure on, whereby these are introduced into the plastic material Storage is held in position. A run of the Surface that would make it smooth is found by adding the Components not taking place.
  • the ingredients that work best in this regard are preferably used silicon carbide (SiC) or similar materials, the Polyphenylene sulfide (PPS) and / or the polyamide (PA). These components ensure that even in a sintering process there is an equalization the surface does not reveal, but that this the microstructure maintains.
  • the base layer will applied to the substrate so that they are largely regular Has surface structure.
  • the main plastic material used for the coating is fluoropolymer in question.
  • fluoropolymer are in particular polytetrafluoroethylene (PTFE) to a mixture (PFA) of tetrafluoroethylene and fluorovenyl ether or tetrafluoroethylene / hexafluoropropylene copolymer (FEP).
  • PTFE polytetrafluoroethylene
  • PFA tetrafluoroethylene
  • FEP tetrafluoroethylene / hexafluoropropylene copolymer
  • a particularly hard bond results if the layer is made of plastic material sintered on the substrate or on the base layer becomes.
  • the sintering process is preferred at one temperature performed, in which the plastic material of the layer on the The substrate or the base layer melts, but not yet elapses; a temperature comes for this for the materials mentioned between 340 ° C and 400 ° C in question.
  • the sintering process itself lasts between 3 and 60 minutes.
  • a stable and resistant coating also results with a corresponding one Pretreatment of the base layer.
  • This is benefited by HVOF (High Velocity Oxygen Fuel), plasma, flame spray or arc spraying applied.
  • HVOF High Velocity Oxygen Fuel
  • plasma flame spray or arc spraying applied.
  • the base layer can be nub-like become.
  • the substrate well In order to prepare the substrate well, it is envisaged that this will be done before the application of the base layer or before the application of the layer is sandblasted from plastic material. Alternatively, it can be etched.
  • the non-stick coating is between the substrate and the layer a base layer arranged from plastic material; this has one largely regular surface structure.
  • the plastic material is preferably again a fluoropolymer, namely polytetrafluoroethylene (PTFE), a mixture (PFA) of tetrafluoroethylene and fluorovinyl ether, tetrafluoroethylene / hexafluoropropylene copolymer (FEP) or a mixture of at least two components of PTFE, PFA and FEP.
  • a fluorinated vinyl ether is, for example, a perfluorinated vinyl ether of the formula in question.
  • Silicon carbide (SiC) or similar materials are suitable as inorganic constituents; Polyphenylene sulfide (PPS), polyamide (PA) and / or other heat-stable plastics are preferably provided as organic constituents.
  • the grain size of the components is advantageously between 2 and 200 ⁇ m; they are preferably added in a proportion of 3 to 30 percent by weight in the plastic material.
  • the base layer can be made of steel, in particular of chromium-nickel steel, or from ceramic material, in particular from tungsten carbide or aluminum oxide, consist; it should preferably have a roughness of 1 to 30 ⁇ m Have RA. Furthermore, it can have a knob-like design.
  • the substrate can consist of metal, ceramic or plastic and have a roughness of 3 to 20 ⁇ m RA.
  • Layers over the surface of the substrate between 25 and 100 microns amount, preferably 50 microns.
  • the proposed non-stick coating is preferably used as a surface material used for rollers for processing adhesives.
  • it is thought of for applying rollers for the application of Use adhesives on foils or paper.
  • advantageous applications for rollers for the application of adhesives on defined areas of diapers are used.
  • the coating with advantage for rollers for the application of adhesives Rubber surfaces, especially tires are used.
  • Another preferred use is the use with rollers for the application of adhesives in the food industry.
  • Figure 1 is a layer structure with a low-adhesion surface outlined.
  • the non-stick coating 1 is extremely resistant to adhesion of adhesives and other sticky media.
  • the layer structure is used especially for rollers for processing adhesives.
  • the layer structure 1 consists of a substrate 2 as a carrier element. This substrate 2 must first be degreased before further processing become; then it can be pretreated with a sandblast to get a ensure good adhesion of the subsequent layers. On the A base layer 3 is then applied to substrate 2.
  • the base layer can consist of metallic or ceramic material and through Flame spraying, arc spraying, plasma or high speed spraying be applied.
  • the base layer 3, as can be clearly seen from FIG. 1, has a knob-like one Surface structure 4.
  • a layer 5 is then made on this Plastic applied.
  • a fluoroplastic is preferred for this used, the components in the form of silicon carbide (SiC) or similar materials, polyphenylene sulfide (PPS) or polyamide (PA) added are.
  • the grain size of the ingredients (additives) is in the case of Polyphenylene sulfide at approx. 30 ⁇ m; the grain size for silicon carbide at approx. 3 ⁇ m.
  • the components mentioned in the fluoroplastic are in an amount of about 20 percent by weight.
  • the whole Layer structure which is applied to the substrate 2 has a height h from approx. 50 ⁇ m.
  • the fluoroplastic is then sintered in at approx. 360 ° C. This creates - as a result of the additives - a microstructure as enlarged for that Detail "A" of FIG. 1 is shown in FIG. 2. As can be seen, points the surface of the plastic layer 5 a variety of evenly distributed Micro surveys 6. These effect the one described at the beginning Lotus effect.
  • FIG. 3 A configuration corresponding to FIG. 1 is outlined in FIG. 3. It can be seen here that on the surface substrate 2 - without intermediate or base layer 3 - directly applied the layer of plastic material is.
  • the water contact angle is the angle that the flanks of a resting one Form water drops at the point of contact with the surface. The larger the angle, the better the non-stick effect of the material.
  • the non-stick coating described comes - as already mentioned - mainly used in deflection rollers in the adhesive industry, e.g. B. for the production of adhesive films (Tesa film). Furthermore, by the use of such appropriately prepared rollers in the manufacture of diapers the area to be provided with adhesive from the area to be kept clear Areas are delimited. Furthermore, there is a multitude other areas of application conceivable (e.g. paper and film production, Printing industry, rubber processing etc.).

Abstract

The invention relates to a method for producing an anti-adherent coating (1) having a low-adherent surface, in addition to an anti-adherent coating and the uses of said anti-adherent coating. In order to provide resistance against solvents and corrosion and enable the invention to be used in the food industry, the inventive method is characterized in that a layer consisting of at least one plastic material is applied to a substrate (2). The surface of said layer (5) is provided with a plurality of substantially uniformly distributed micro-elevations (6) by adding constituents to the plastic material before application to the substrate (2). Said constituents prevent the plastic material from running during the processing thereof and promote the formation of substantially uniformly distributed micro-elevations (6). The substrate has a structured surface prior thereto.

Description

Technisches GebietTechnical field

Die Erfindung betrifft ein Verfahren zum Herstellen einer Antihaftbeschichtung mit einer adhäsionsarmen Oberfläche sowie die Antihaftbeschichtung selbst und Verwendungen dieser Antihaftbeschichtung.The invention relates to a method for producing a non-stick coating with a low-adhesion surface as well as the non-stick coating itself and uses of this non-stick coating.

Stand der TechnikState of the art

Unter einer Antihaftbeschichtung ist im Rahmen der vorliegenden Erfindung ein Schichtaufbau zu verstehen, der erfindungsgemäß Schichtaufbau so beschaffen ist, daß er sich beispielsweise für Walzen oder andere Maschinenteile in der Klebstoff-, Gummi- und/oder lackverarbeitenden Industrie besonders gut eignet. Dies ist besonders dort relevant, wo bestimmte Flächenbereiche, beispielsweise von Etiketten, Klebebändern, Windeln und anderen Produkten der Papier-, Klebstoff-, Lack- und Gummiindustrie, die Eigenschaft aufweisen sollen, daß dort Klebstoff oder andere klebrige Medien nicht haften; damit können gezielt begrenzte Klebebereiche geschaffen werden, während die Nachbarbereiche nicht ankleben können. D. h. der Klebstoff bzw. andere klebrige Medien können maschinell gezielt und lokal begrenzt aufgebracht werden. Die entsprechend beschichteten Werkzeuge, wie beispielsweise Walzen in der Papierindustrie zur Herstellung mehrlagigen oder kaschierten Papiers bleiben kleberfrei.A non-stick coating is within the scope of the present invention to understand a layer structure, the layer structure according to the invention is such that it is, for example, for rollers or others Machine parts in the adhesive, rubber and / or paint processing Industry is particularly well suited. This is particularly relevant where certain Surface areas, for example of labels, adhesive tapes, Diapers and other products of paper, glue, lacquer and Rubber industry, which should have the property that there is adhesive or other sticky media does not adhere; this allows targeted limited Adhesive areas are created while the neighboring areas can not stick. I.e. the adhesive or other sticky media can be applied mechanically in a targeted and localized manner. The appropriately coated tools, such as rollers in the Paper industry for the production of multilayer or laminated paper remain glue-free.

Antihaftbeschichtungen der eingangs genannten Art sind bekannt. Sie stellen gemäß der gegenständlichen Art auf den sog. Lotos-Effekt ab. Gewisse Pflanzenblätter, nämlich die Blätter der Lotos-Blüte (Nelumbo nucitera), sind im mikroskopischen Bereich nicht glatt ausgebildet, sondern sie weisen eine Oberfläche mit regelmäßigen Mikroerhebungen auf. Diese Ausgestaltung sorgt dafür, daß Wassertropfen beim Abperlen Schmutzpartikel mit aufnehmen und abtransportieren. Damit ist sichergestellt, daß die Oberfläche des Blattes der Lotos-Blüte stets sauber gehalten wird.Non-stick coatings of the type mentioned are known. she based on the so-called lotus effect. Certain plant leaves, namely the leaves of the lotus flower (Nelumbo nucitera), are not smooth in the microscopic range, but they have a surface with regular micro surveys. This configuration ensures that water drops when pearls off Pick up and remove dirt particles. This ensures that the surface of the leaf of the lotus flower is always kept clean becomes.

Dieser Effekt wird auch industriell angewendet. Es sind Materialien mit einer Oberflächenstruktur bekannt, bei der die Struktur des Lotos-Blattes nachempfunden ist. Dabei wird als Oberftächenmaterial Silikon verwendet, das sich in der Weise verarbeiten bzw. behandeln läßt, daß sich eine Art "Doppelstruktur" an der Oberfläche ergibt: Die Oberfläche besteht aus einer noppenartigen Struktur, wobei die einzelnen Noppen wiederum Mikroerhebungen aufweisen.This effect is also used industrially. There are materials with known a surface structure in which the structure of the lotus leaf is modeled. Silicone is used as the surface material, that can be processed or treated in such a way that a Kind of "double structure" on the surface results in: The surface exists from a knob-like structure, the individual knobs in turn Have micro surveys.

Nachteilig ist, daß die in dieser Weise mit Silikon beschichteten Oberflächen keine Resistenz gegenüber Lösungsmitteln und Korrosion aufweisen. Des weiteren sind diese Oberflächen nicht zugelassen für Lebensmittelanwendungen. Schließlich kommt eine entsprechende Oberfläche auch aufgrund der Materialeigenschaft des Sillkons für manche Anwendungen nicht in Frage: Bei Lacklerungs-Anwendungen (z. B. bei der Autolackierung) ist eine so beschichtete Oberfläche untauglich, da der Lack vom Silikon abgestoßen wird und es so zur Ausbildung sog. "Fischaugen" kommt. Nachteilig ist schließlich, daß die Härte der Oberfläche relativ gering ist.The disadvantage is that the surfaces coated with silicone in this way have no resistance to solvents and corrosion. Furthermore, these surfaces are not approved for food applications. Finally there is an appropriate surface also due to the material properties of the sillcon for some applications out of the question: in paint applications (e.g. car painting) such a coated surface is unsuitable because of the paint is repelled by the silicone and so it forms so-called "fish eyes" comes. Finally, it is disadvantageous that the surface hardness is relative is low.

Andererseits sind Oberflächenbeschichtungen unter Einsatz von Fluorkunststoffen (beispielsweise Teflon) bekannt, die zu einer härteren Oberfläche führen. Der Fluorkunststoff wird dabei auf einer Trägerschicht bei erhöhten Temperaturen (ca. 400 °C) eingesintert, um einen stabilen Verbund zu erhalten. Dadurch wird jedoch die Oberfläche des Substrats glatt; ein Lotos-Effekt ist auf diese Weise nicht zu erhalten.On the other hand, surface coatings are made using fluoroplastics (e.g. Teflon) known to result in a harder surface to lead. The fluoroplastic is placed on a carrier layer elevated temperatures (approx. 400 ° C) sintered to a stable Get composite. However, this will make the surface of the substrate smooth; a lotus effect cannot be obtained in this way.

In der EP 0 485 801 B1 ist ein Wärmetauscher offenbart, der eine Vielzahl von plattenförmigen Rippen aufweist. Auf der Rippenoberfläche ist eine Mischung aufgebracht, die aus einer eine Silikonharzverbindung enthaltende Lösung und feinverteilten anorganischen Partikeln besteht. Als Basisschicht kommt dabei Silikon zum Einsatz. Weiterhin ist dort vorgesehen, daß die Oberfläche der Schicht regelmäßig verteilte Mikroerhebungen aufweist. EP 0 485 801 B1 discloses a heat exchanger which has a Has a plurality of plate-shaped ribs. On the rib surface is a mixture applied, which consists of a silicone resin compound containing solution and finely divided inorganic particles. Silicone is used as the base layer. Still there provided that the surface of the layer was distributed regularly Has micro surveys.

Die DE 36 44 211 A1 offenbart ein Verfahren zur Herstellung einer Bügeleisensohle. Durch die Abfolge verschiedener Verfahrensschritte wird ein metallisches Trägersubstrat mit einer adhäsionsarmen Kunststoffoberfläche versehen, die möglichst glatt ausgebildet und versiegelt ist. Zur Versiegelung wird ein Bindemittel organischer Art eingesetzt.DE 36 44 211 A1 discloses a method for producing a Soleplate. Through the sequence of different process steps becomes a metallic carrier substrate with a low-adhesion Provide plastic surface that is as smooth as possible and is sealed. An organic type binder is used for sealing used.

In der DE 198 33 375 A1 wird ein Gegenstand beschrieben, der aus Metall, Keramik, Email oder Glas besteht und der mit einer zumindest einlagigen Beschichtung versehen ist, die anorganisches und/oder organisches Pigment, Flourpolymer und als Bindeharz wenigstens eines vom Typ der Polyamidimide, Polyimide, Polyetherimide sowie ähnliche Substanzen aufweist. Die Spezifikation der Beschichtung ist dabei sowohl hinsichtlich der Mengen der Bestandteile als auch hinsichtlich deren Partikelgröße vorgegeben.DE 198 33 375 A1 describes an object which consists of Metal, ceramic, enamel or glass and with at least one Single-layer coating is provided, the inorganic and / or organic pigment, fluoropolymer and as a binder resin at least one of the type of polyamide imides, polyimides, polyetherimides and the like Has substances. The specification of the coating is both in terms of the amounts of the ingredients as well as in terms of their Particle size specified.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Herstellung einer Antihaftbeschichtung sowie eine Antihaftbeschichtung zu schaffen, das bzw. die die vorgenannten Nachteile vermeidet und gleichzeitig die beschriebenen Vorteile aufrechterhält. Die Antihaftbeschichtung soll also den Lotos-Effekt aufweisen, d. h. die genannte Doppelstruktur mit Mikroerhebungen haben. Gleichzeitig soll jedoch die Beschichtung resistent gegen Lösungsmittel und Korrosion sein und sich auch für den Einsatz in der Lebensmittelindustrie eignen.The invention is therefore based on the object of providing a method for producing a non-stick coating and a non-stick coating which avoids the aforementioned disadvantages and at the same time maintains the advantages described. The non-stick coating should therefore have the lotus effect, ie have the double structure with micro elevations. At the same time, however, the coating should be resistant to solvents and corrosion and also suitable for use in the food industry.

Die Lösung dieser Aufgabe durch die Erfindung wird durch ein Herstellverfahren für eine adhäsionsarme Oberfläche gelöst,

  • bei dem auf einem Substrat eine Schicht aus mindestens einem Kunststoffmaterial aufgebracht
  • und die Oberfläche der Schicht mit einer Vielzahl von im wesentlichen regelmäßig verteilten Mikroerhebungen versehen wird, indem dem Kunststoffmaterial vor dem Aufbringen auf das Substrat Bestandteile zugegeben werden, die sowohl ein Verlaufen des Kunststoffmaterials bei dessen Verarbeitung verhindern als auch die Ausbildung von im wesentlichen regelmäßig verteilten Mikroerhebungen begünstigen,
  • wobei vor dem Aufbringen der Kunststoffschicht zunächst eine Grundschicht so auf das Substrat aufgebracht wird, daß sie eine weitgehend regelmäßige Oberflächenstruktur aufweist.
The solution to this problem by the invention is achieved by a manufacturing method for a low-adhesion surface,
  • in which a layer of at least one plastic material is applied to a substrate
  • and the surface of the layer is provided with a multiplicity of essentially regularly distributed micro-elevations, by adding components to the plastic material prior to application to the substrate, which both prevent the plastic material from running when it is processed and also form essentially regularly distributed micro-elevations favor,
  • before applying the plastic layer, a base layer is first applied to the substrate such that it has a largely regular surface structure.

Der erfindungsgemäße Gedanke stellt also darauf ab, daß auf einem Substrat, dessen Oberfläche strukturiert ausgebildet sein kann oder durch Aufbringen einer Grundschicht eine Oberflächenstruktur erhält, eine Kunststoff-Schicht aufgebracht wird. Diese Schicht weist eine Mikrostruktur auf, wobei diese durch die in das Kunststoff-Material eingebrachten Einlagerungen in Position gehalten wird. Ein Verlaufen der Oberfläche, die sie glatt machen würde, findet also durch die Zugabe der Bestandteile nicht statt.The idea of the invention is based on the fact that on a Substrate, the surface of which can be structured or obtains a surface structure by applying a base layer, a plastic layer is applied. This layer has a microstructure on, whereby these are introduced into the plastic material Storage is held in position. A run of the Surface that would make it smooth is found by adding the Components not taking place.

Die diesbezüglich am besten wirkenden Bestandteile sind das vorzugsweise eingesetzte Silizium-Karbid (SiC) oder ähnliche Materialien, das Polyphenylensulfid (PPS) und/oder das Polyamid (PA). Diese Bestandteile sorgen dafür, daß sich auch bei einem Sinterprozeß eine Vergleichmäßigung der Oberfläche nicht ergibt, sondern daß diese die Mikrostruktur beibehält.The ingredients that work best in this regard are preferably used silicon carbide (SiC) or similar materials, the Polyphenylene sulfide (PPS) and / or the polyamide (PA). These components ensure that even in a sintering process there is an equalization the surface does not reveal, but that this the microstructure maintains.

Es wird also vor dem Aufbringen der Schicht aus Kunststoffmaterial zunächst eine Grundschicht auf dem Substrat und auf diese anschließend die Schicht aus Kunststoffmaterial aufgebracht. Die Grundschicht wird dabei so auf das Substrat aufgebracht, daß sie eine weitgehend regelmäßige Oberflächenstruktur aufweist.So it is first before applying the layer of plastic material a base layer on the substrate and then on this applied the layer of plastic material. The base layer will applied to the substrate so that they are largely regular Has surface structure.

Als Kunststoffmaterial für die Beschichtung kommt vor allem Fluorpolymer in Frage. Dabei handelt es sich insbesondere um Polytetrafluorethylen (PTFE), um eine Mischung (PFA) aus Tetrafluorethylen und Fluorvenylether oder um Tetrafluorethylen/Hexaflourpropylen-Copolymerisat (FEP). Es kann aber auch eine Mischung aus mindestens zwei Komponenten von PTFE, PFA und FEP sein. The main plastic material used for the coating is fluoropolymer in question. These are in particular polytetrafluoroethylene (PTFE) to a mixture (PFA) of tetrafluoroethylene and fluorovenyl ether or tetrafluoroethylene / hexafluoropropylene copolymer (FEP). But it can also be a mixture of at least two components of PTFE, PFA and FEP.

Ein besonders harter Verbund ergibt sich, wenn die Schicht aus Kunststoffmaterial auf dem Substrat bzw. auf der Grundschicht eingesintert wird. Der Sinterprozeß wird dabei bevorzugt bei einer Temperatur durchgeführt, bei der das Kunststoffmaterial der Schicht an dem Substrat bzw. an der Grundschicht zwar anschmilzt, aber noch nicht verfließt; für die genannten Materialien kommt hierfür eine Temperatur zwischen 340 °C und 400 °C in Frage. Der Sinterprozeß selber dauert zwischen 3 und 60 Minuten.A particularly hard bond results if the layer is made of plastic material sintered on the substrate or on the base layer becomes. The sintering process is preferred at one temperature performed, in which the plastic material of the layer on the The substrate or the base layer melts, but not yet elapses; a temperature comes for this for the materials mentioned between 340 ° C and 400 ° C in question. The sintering process itself lasts between 3 and 60 minutes.

Eine stabile und resistente Beschichtung ergibt sich auch bei entsprechender Vorbehandlung der Grundschicht. Diese wird mit Vorteil durch HVOF- (High Velocity Oxygen Fuel), Plasma-, Flammspritz- oder Lichtbogenspritzen aufgebracht. Die Grundschicht kann dazu noppenartig ausgebildet werden.A stable and resistant coating also results with a corresponding one Pretreatment of the base layer. This is benefited by HVOF (High Velocity Oxygen Fuel), plasma, flame spray or arc spraying applied. For this purpose, the base layer can be nub-like become.

Zwecks guter Vorbereitung des Substrats ist vorgesehen, daß dieses vor dem Aufbringen der Grundschicht bzw. vor dem Aufbringen der Schicht aus Kunststoffmaterial sandgestrahlt wird. Alternativ dazu kann es auch geätzt werden.In order to prepare the substrate well, it is envisaged that this will be done before the application of the base layer or before the application of the layer is sandblasted from plastic material. Alternatively, it can be etched.

Die bevorzugte Antihaftbeschichtung mit einer adhäsionsarmen Oberfläche weist:

  • ein strukturiertes Substrat mit einer Schicht aus mindestens einem Kunststoffmaterial auf,
  • wobei die Oberfläche der Schicht eine Vielzahl von im wesentlichen regelmäßig verteilten Mikroerhebungen aufweist,
  • wobei das Kunststoffmaterial anorganische oder organische Bestandteile aufweist, die sowohl ein Verlaufen des Kunststoffmaterials bei dessen Verarbeitung verhindern als auch die Ausbildung von im wesentlichen regelmäßig verteilten Mikroerhebungen begünstigen, und
  • wobei zwischen dem Substrat und der Kunststoffschicht eine Grundschicht angeordnet ist, die eine weitgehend regelmäßige Oberflächenstruktur aufweist.
The preferred non-stick coating with a low-adhesion surface has:
  • a structured substrate with a layer of at least one plastic material,
  • the surface of the layer having a multiplicity of essentially regularly distributed micro elevations,
  • the plastic material having inorganic or organic constituents which both prevent the plastic material from running when it is processed and also promote the formation of essentially regularly distributed micro surveys, and
  • wherein a base layer is arranged between the substrate and the plastic layer, which has a largely regular surface structure.

Auch in diesem Aufbau spiegelt sich der oben bereits genannte Grundgedanke der Erfindung wider: Auf dem strukturierten Untergrund wird ein Kunststoff-Film aufgebracht, der eine Mikrostruktur aufweist; diese wird durch die in das Kunststoff-Material eingebrachten Einlagerungen in Position gehalten.The basic idea mentioned above is also reflected in this structure of the invention: On the structured underground is a Plastic film applied, which has a microstructure; this will through the inclusions in the plastic material in position held.

Bei der Antihaftbeschichtung ist zwischen dem Substrat und der Schicht aus Kunststoffmaterial eine Grundschicht angeordnet; diese weist eine weitgehend regelmäßige Oberflächenstruktur auf.The non-stick coating is between the substrate and the layer a base layer arranged from plastic material; this has one largely regular surface structure.

Das Kunststoffmaterial ist vorzugsweise wieder ein Fluorpolymer, namentlich Polytetrafluorethylen (PTFE), eine Mischung (PFA) aus Tetrafluorethylen und Fluorvinylether, Tetrafluorethylen/Hexaflourpropylen-Copolymerisat (FEP) oder eine Mischung aus mindestens zwei Komponenten von PTFE, PFA und FEP. Als Fluorvinylether kommt beispielsweise ein perfluorierter Vinylether der Formel

Figure 00090001
in Frage.
Als anorganischer Bestandteile kommen Silizium-Karbid (SiC) oder ähnliche Materialien in Frage; als organische Bestandteile sind vorzugsweise Polyphenylensulfid (PPS), Polyamid (PA) und/oder andere hitzestabile Kunststoffe vorgesehen. Die Körnung der Bestandteile liegt vorteilhafterweise zwischen 2 und 200 µm; sie werden bevorzugt mit einem Mengenanteil im Kunststoffmaterial von 3 bis 30 Gewichtsprozent zugegeben.The plastic material is preferably again a fluoropolymer, namely polytetrafluoroethylene (PTFE), a mixture (PFA) of tetrafluoroethylene and fluorovinyl ether, tetrafluoroethylene / hexafluoropropylene copolymer (FEP) or a mixture of at least two components of PTFE, PFA and FEP. A fluorinated vinyl ether is, for example, a perfluorinated vinyl ether of the formula
Figure 00090001
in question.
Silicon carbide (SiC) or similar materials are suitable as inorganic constituents; Polyphenylene sulfide (PPS), polyamide (PA) and / or other heat-stable plastics are preferably provided as organic constituents. The grain size of the components is advantageously between 2 and 200 μm; they are preferably added in a proportion of 3 to 30 percent by weight in the plastic material.

Die Grundschicht kann aus Stahl, insbesondere aus Chrom-Nickelstahl, oder aus Keramikmaterial, insbesondere aus Wolframcarbid oder Aluminiumoxid, bestehen; sie sollte bevorzugt eine Rauhigkeit von 1 bis 30 µm RA aufweisen. Des weiteren kann sie noppenartig ausgebildet sein.The base layer can be made of steel, in particular of chromium-nickel steel, or from ceramic material, in particular from tungsten carbide or aluminum oxide, consist; it should preferably have a roughness of 1 to 30 µm Have RA. Furthermore, it can have a knob-like design.

Das Substrat kann aus Metall, Keramik oder Kunststoff bestehen und eine Rauhigkeit von 3 bis 20 µm RA aufweisen.The substrate can consist of metal, ceramic or plastic and have a roughness of 3 to 20 µm RA.

Auf dem Substrat bzw. auf der Oberfläche der Grundschicht können mehrere, übereinander angeordnete Schichten aus Kunststoff aufgebracht sein. Schließlich kann die Höhe der aufgebrachten Schicht bzw. Can on the substrate or on the surface of the base layer applied several layers of plastic arranged one above the other his. Finally, the height of the applied layer or

Schichten über der Oberfläche des Substrats zwischen 25 und 100 µm betragen, vorzugsweise 50 µm.Layers over the surface of the substrate between 25 and 100 microns amount, preferably 50 microns.

Gewerbliche AnwendbarkeitIndustrial applicability

Der vorgeschlagene Antihaftbeschichtung wird vorzugsweise als Oberflächenmaterial für Walzen für die Verarbeitung von Klebstoffen verwendet. Insbesondere ist daran gedacht, sie für Walzen für das Aufbringen von Klebstoffen auf Folien oder Papier einzusetzen. Weiterhin ergeben sich vorteilhafte Anwendungen für Walzen für die Aufbringung von Klebstoffen auf definierte Flächen von Windeln. Gleichermaßen kann die Beschichtung mit Vorteil bei Walzen für die Aufbringung von Klebstoffen auf Gummiflächen, insbesondere von Reifen, eingesetzt werden. Eine weitere bevorzugte Verwendung ist der Einsatz bei Walzen für das Aufbringen von Klebstoffen in der Lebensmittelindustrie.The proposed non-stick coating is preferably used as a surface material used for rollers for processing adhesives. In particular, it is thought of for applying rollers for the application of Use adhesives on foils or paper. Furthermore arise advantageous applications for rollers for the application of adhesives on defined areas of diapers. Similarly, the coating with advantage for rollers for the application of adhesives Rubber surfaces, especially tires, are used. Another preferred use is the use with rollers for the application of adhesives in the food industry.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen :

Fig. 1
einen schematischen Schnitt durch einen Schichtaufbau;
Fig. 2
eine Detaildarstellung der Einzelheit "A" aus Fig. 1;
Fig. 3
einen zu Fig. 1 alternativen Schichtaufbau ohne Grundschicht.
In the drawing, an embodiment of the invention is shown. Show it :
Fig. 1
a schematic section through a layer structure;
Fig. 2
a detailed view of the detail "A" of Fig. 1;
Fig. 3
an alternative to Fig. 1 layer structure without a base layer.

Wege zur Ausführung der ErfindungWays of Carrying Out the Invention

In Figur 1 ist ein Schichtaufbau mit einer adhäsionsarmen Oberfläche skizziert. Die Antihaftbeschichtung 1 ist äußerst resistent gegen Adhäsion von Klebstoffen und anderen klebrigen Medien. Der Schichtaufbau kommt namentlich für Walzen zur Verarbeitung von Klebstoffen zum Einsatz. Da die adhäsionsarmen Oberflächenbereiche - wie skizziert - eine Anhaftung von Klebstoffen verhindern, bedeutet dies, daß die entsprechend ausgestalteten Oberflächen einer Walze die Übertragung von Klebstoff zumindest erschweren, so daß die korrespondierenden zu walzenden Bereich frei bzw. arm von Klebstoff bleiben und die Walzen selbst auch nicht verschmutzen.In Figure 1 is a layer structure with a low-adhesion surface outlined. The non-stick coating 1 is extremely resistant to adhesion of adhesives and other sticky media. The layer structure is used especially for rollers for processing adhesives. As the low-adhesion surface areas - as sketched - a To prevent adhesion of adhesives, this means that the appropriate designed surfaces of a roller the transfer of adhesive at least complicate, so that the corresponding to be rolled The area remains free or poor of adhesive and the rollers themselves also do not pollute.

Der Schichtaufbau 1 besteht aus einem Substrat 2 als Trägerelement. Dieses Substrat 2 muß vor der weiteren Verarbeitung zunächst entfettet werden; dann kann es mit Sandstrahlen vorbehandelt werden, um ein gutes Anhaften der nachfolgenden Schichten sicherzustellen. Auf das Substrat 2 wird dann eine Grundschicht 3 aufgetragen. Die Grundschicht kann aus metallischem oder keramischem Material bestehen und durch Flammspritzen, Lichtbogenspritzen, Plasma- oder Hochgeschwindigkeitsspritzen aufgetragen werden.The layer structure 1 consists of a substrate 2 as a carrier element. This substrate 2 must first be degreased before further processing become; then it can be pretreated with a sandblast to get a ensure good adhesion of the subsequent layers. On the A base layer 3 is then applied to substrate 2. The base layer can consist of metallic or ceramic material and through Flame spraying, arc spraying, plasma or high speed spraying be applied.

Die Grundschicht 3 weist, wie es gut aus Fig. 1 hervorgeht, eine noppenartige Oberflächenstruktur 4 auf. Auf diese wird dann eine Schicht 5 aus Kunststoff aufgetragen. Hierfür kommt bevorzugt ein Fluorkunststoff zum Einsatz, dem Bestandteile in Form von Silizium-Karbid (SiC) oder ähnlichen Materialien, Polyphenylensulfid (PPS) oder Polyamid (PA) zugesetzt sind. Die Korngröße der Bestandteile (Zusätze) liegt im Falle von Polyphenylensulfid bei ca. 30 µm; bei Silizium-Karbid liegt die Korngröße bei ca. 3 µm. Dem Fluorkunststoff werden die genannten Bestandteile in einer Menge von ca. 20 Gewichtsprozent zugegeben. Der gesamte Schichtaufbau, der auf das Substrat 2 aufgebracht wird, weist eine Höhe h von ca. 50 µm auf.The base layer 3, as can be clearly seen from FIG. 1, has a knob-like one Surface structure 4. A layer 5 is then made on this Plastic applied. A fluoroplastic is preferred for this used, the components in the form of silicon carbide (SiC) or similar materials, polyphenylene sulfide (PPS) or polyamide (PA) added are. The grain size of the ingredients (additives) is in the case of Polyphenylene sulfide at approx. 30 µm; the grain size for silicon carbide at approx. 3 µm. The components mentioned in the fluoroplastic are in an amount of about 20 percent by weight. The whole Layer structure which is applied to the substrate 2 has a height h from approx. 50 µm.

Der Fluorkunststoff wird dann bei ca. 360 °C eingesintert. Dabei entsteht - infolge der Zusätze - eine Mikrostruktur, wie sie vergrößert für das Detail "A" der Fig. 1 in Fig. 2 dargestellt ist. Wie zu erkennen ist, weist die Oberfläche der Kunststoffschicht 5 eine Vielzahl gleichmäßig verteilter Mikroerhebungen 6 auf. Diese bewirken den eingangs beschriebenen Lotos-Effekt.The fluoroplastic is then sintered in at approx. 360 ° C. This creates - as a result of the additives - a microstructure as enlarged for that Detail "A" of FIG. 1 is shown in FIG. 2. As can be seen, points the surface of the plastic layer 5 a variety of evenly distributed Micro surveys 6. These effect the one described at the beginning Lotus effect.

In Fig. 3 ist eine mit Fig. 1 korrespondierende Ausgestaltung skizziert. Hier ist zu sehen, daß auf dem Oberflächensubstrat 2 - ohne Zwischen- oder Grundschicht 3 - direkt die Schicht aus Kunststoffmaterial aufgebracht ist.A configuration corresponding to FIG. 1 is outlined in FIG. 3. It can be seen here that on the surface substrate 2 - without intermediate or base layer 3 - directly applied the layer of plastic material is.

Hinsichtlich des Vergleichs der Eigenschaften der herkömmlichen Systeme mit einer Oberflächenbeschichtung aus PFA (Mischung aus Tetrafluorethylen und Fluorvenylether) oder aus FEP (Tetrafluorethylen/Hexaflourpropylen-Copolymerisat) (= System [1]) oder Beschichtungen bestehend aus Silikon (= System [2]) mit dem erfindungsgemäßen Lotos-System (= System [3]) ergibt sich folgendes Bild: Eigenschaften System [1] System [2] System [3] = Erfindun Oberflächeneigenschaft glatt rauh rauh Antihafteigenschaft schlecht sehr gut sehr gut Wasserkontaktwinkel 100 ° 118° 128° Lösungsmittelbeständigkeit gut schlecht gut Korrosionsbeständigkeit gut schlecht gut Lebensmittelverträglichkeit gut schlecht gut Eignung für Lackverarbeit. gut schlecht gut Kontamination nicht möglich möglich nicht möglich With regard to the comparison of the properties of the conventional systems with a surface coating made of PFA (mixture of tetrafluoroethylene and fluorovinyl ether) or FEP (tetrafluoroethylene / hexafluoropropylene copolymer) (= system [1]) or coatings consisting of silicone (= system [2]) with The lotus system according to the invention (= system [3]) gives the following picture: characteristics System [1] System [2] System [3] = invention surface property smooth rough rough Non-stick properties bad very good very good Water contact angle 100 ° 118 ° 128 ° Solvent resistance Good bad Good corrosion resistance Good bad Good Food compatibility Good bad Good Suitability for paint processing. Good bad Good contamination not possible possible not possible

Der Wasserkontaktwinkel ist dabei der Winkel, den die Flanken eines ruhenden Wassertropfens an der Kontaktstelle mit dem Untergrund bilden. Je größer der Winkel ist, desto besser ist die Antihaftwirkung des Materials.The water contact angle is the angle that the flanks of a resting one Form water drops at the point of contact with the surface. The larger the angle, the better the non-stick effect of the material.

Ein bevorzugter Verfahrensablauf zur Herstellung der beschriebenen Antihaftschicht mit den genannten vorteilhaften Eigenschaften sieht wie folgt aus:

  • 1. Entfetten des Substrats aus Metall, Keramik oder Kunststoff;
  • 2. Sandstrahlen des Substrats;
  • 3. Auftragen der Grundschicht aus metallischem oder keramischen Material durch Flammspritzen, Lichtbogenspritzen, Plasma- oder Hochgeschwindigkeitsspritzen;
  • 4. Auftragen der Fluorkunststoffschicht, bestehend aus einer PFA/FEP/PTFE-Dispersion, in die ein Zusatz von Silizium-Karbid, Polyphenylensulfid und/oder Polyamid zugegeben ist; Korngröße des Zusatzes: zwischen 3 und 30 µm; Zusatzmenge: ca. 20 Gewichtsprozent;
  • 5. Einsintern der Kunststoffschicht bei 360 °C; Sinterdauer: 15 Minuten;
  • 6. Optional: Aufbringen einer zweiten Dispersionsschicht
  • 7. Einsintern der zweiten Schicht bei 360 °C; Sinterdauer: 15 Minuten.
    • A preferred process sequence for producing the described non-stick layer with the advantageous properties mentioned is as follows:
  • 1. degreasing the substrate made of metal, ceramic or plastic;
  • 2. sandblasting the substrate;
  • 3. Application of the base layer of metallic or ceramic material by flame spraying, arc spraying, plasma or high-speed spraying;
  • 4. Application of the fluoroplastic layer, consisting of a PFA / FEP / PTFE dispersion, in which an addition of silicon carbide, polyphenylene sulfide and / or polyamide is added; Grain size of the additive: between 3 and 30 µm; Quantity added: approx. 20 percent by weight;
  • 5. Sintering the plastic layer at 360 ° C; Sintering time: 15 minutes;
  • 6. Optional: application of a second dispersion layer
  • 7. Sinter the second layer at 360 ° C; Sintering time: 15 minutes.

    • Die beschriebene Antihaftbeschichtung kommt - wie bereits erwähnt - vor allem in Umlenk-Walzen in der Klebstoffindustrie zum Einsatz, z. B. für die Herstellung von Klebefolien (Tesa-Film). Weiterhin können durch den Einsatz solcher entsprechend präparierter Walzen bei der Windelherstellung die mit Klebstoff zu versehenden Bereich von den hiervon freizuhaltenen Bereichen abgegrenzt werden. Des weiteren ist eine Vielzahl anderer Anwendungsbereiche denkbar (z. B. Papier- und Folienherstellung, Druckindustrie, Gummiverarbeitung etc.).The non-stick coating described comes - as already mentioned - mainly used in deflection rollers in the adhesive industry, e.g. B. for the production of adhesive films (Tesa film). Furthermore, by the use of such appropriately prepared rollers in the manufacture of diapers the area to be provided with adhesive from the area to be kept clear Areas are delimited. Furthermore, there is a multitude other areas of application conceivable (e.g. paper and film production, Printing industry, rubber processing etc.).

    Claims (36)

    1. Method for the manufacture of an non-stick coating (1) with a low-adhesion surface,
      whereby a layer (5) of at least one plastic material is applied to a substrate (2),
      and the surface of the layer (5) is provided with a large number of essentially regularly distributed micro-elevations (6) in that components in a proportion of 10 to 30 per cent by weight and a particle size of 2 to 200 µm are added to the plastic material prior to application to the substrate,
      provided the substrate does not have a roughness of 1 to 30 µm RA, a base layer (3) with this roughness is initially applied to the substrate (2) prior to application of the plastic layer (5) in such a way that it is given a largely regular surface structure (4).
    2. Method according to claim 1, characterised by the fact that silicon carbide (SIC), polyphenyl sulphide (PPS) and/or polyamide (PA) are used as components.
    3. Method according to claim 1 or 2, characterised by the fact that the plastic material is a fluorpolymer.
    4. Method according to claim 3, characterised by the fact that the fluorpolymer is polytetrafluoroethylene (PTFE).
    5. Method according to claim 3, characterised by the fact that the fluorpolymer is a mixture (PFA) of tetrafluoroethylene and fluorovinylether.
    6. Method according to claim 3, characterised by the fact that the fluorpolymer is a tetrafluoroethylene/hexafluoropropylene-copolymerisate (FEP).
    7. Method according to one of the claims 3 to 6, characterised by the fact that the fluorpolymer is a mixture of minimum two components of PTFE, PFA and FEP.
    8. Method according to one of the claims 1 to 7, characterised by the fact that the plastic layer (5) on the substrate (2) or on the base layer (3) is sintered.
    9. Method according to claim 8, characterised by the fact that the sintering process is carried out at a temperature at which the plastic material of the layer (5) on the substrate (2) or on the base layer (3) starts melting, but does not yet flow.
    10. Method according to claim 8 or 9, characterised by the fact that the sintering process is carried out at a temperature between 340°C and 400°C.
    11. Method according to claim 9, characterised by the fact that the sintering process lasts between 3 and 60 minutes.
    12. Method according to one of the claims 1 to 11, characterised by the fact that the base layer (3) is applied by HVOF (High Velocity Oxygen Fuel), plasma, flame or arc spraying.
    13. Method according to one of the claims 1 to 12, characterised by the fact that the base layer (3) is given a burl- or knop-like structure.
    14. Method according to one of the claims 1 to 13, characterised by the fact that the substrate (2) is sand-blasted prior to application of the base layer (3) or plastic layer (5).
    15. Method according to one of the claims 1 to 13, characterised by the fact that the substrate (2) is etched prior to application of the base layer (3) or plastic layer (5).
    16. Non-stick coating (1) with a low-adhesion surface consisting of:
      a substrate (2) applied to which is a layer (5) of at least one plastic material and,
      the surface of the layer (5) has a large number of essentially regularly distributed micro-elevations (6),
      because the plastic material contains inorganic or organic components in a proportion greater than 10 to 30 per cent by weight and a particle size of 2 to 200 µm,
      whereby a base layer (3) with a roughness of 1 to 30 µm RA is arranged between the substrate (2) and the plastic layer (5), provided the substrate does not already have this roughness.
    17. Non-stick coating according to claim 16, characterised by the fact that the plastic material is a fluorpolymer.
    18. Non-stick coating according to claim 17, characterised by the fact that the fluorpolymer is polytetrafluoroethylene (PTFE).
    19. Non-stick coating according to claim 17, characterised by the fact that the fluorpolymer is a mixture (PFA) of tetrafluoroethylene and fluorovinylether.
    20. Non-stick coating according to claim 17, characterised by the fact that the fluorpolymer is a tetrafluoroethylene/hexafluoropropylene-copolymerisate (FEP).
    21. Non-stick coating according to one of the claims 17 to 20, characterised by the fact that the fluorpolymer is a mixture of at least two components of PTFE, PFA and FEP.
    22. Non-stick coating according to one of the claims 16 to 21, characterised by the fact that the inorganic components consist of silicon carbide (SIC) or similar materials.
    23. Non-stick coating according to one of the claims 16 to 21, characterised by the fact that the organic components consist of polyphenylsulphide (PPS), polyamide (PA) and/or other thermostable plastics.
    24. Non-stick coating according to one of the claims 16 to 23, characterised by the fact that the base layer (3) consists of steel, particularly chromium-nickel steel.
    25. Non-stick coating according to one of the claims 16 to 23, characterised by the fact that the base layer (3) consists of ceramic material, particularly of tungsten carbide or aluminium oxide.
    26. Non-stick coating according to one of the claims 16 to 25, characterised by the fact that the base layer (3) has a burl- or knop-like structure.
    27. Non-stick coating according to one of the claims 16 to 26, characterised by the fact that the substrate (2) consists of metal, ceramic or plastic.
    28. Non-stick coating according to one of the claims 16 to 27, characterised by the fact that the substrate (2) has a roughness of 3 to 20 µm RA.
    29. Non-stick coating according to one of the claims 16 to 28, characterised by the fact that several layers (5) of a plastic material arranged one on top of the other are applied to the substrate (2) or to the surface of the base layer (3).
    30. Non-stick coating according to one of the claims 16 to 29, characterised by the fact that the height (h) of the applied layer/layers over the surface of the substrate (2) is between 25 and 100 µm, preferably 50 µm.
    31. Use of an non-stick coating (1) according to one of the claims 16 to 30 as a surface material for sliding surfaces, particularly a funnel, as well as for rolls and drums in the paper, adhesive and nappy industry.
    32. Use according to claim 31, characterised by the fact that the rolls are used for the application of adhesives to foils.
    33. Use according to claim 31, characterised by the fact that the rolls are used for the application of adhesives to paper.
    34. Use according to claim 31, characterised by the fact that the rolls are used for the application of adhesives to defined areas of nappies.
    35. Use according to claim 31, characterised by the fact that the rolls are used for the application of adhesives to rubber surfaces, particularly of tyres.
    36. Use according to claim 31, characterised by the fact that the rolls are used for the application of adhesives in the foodstuff industry.
    EP00991647A 1999-12-29 2000-12-28 Method for producing an anti-adherent coating, anti-adherent coating and use of an anti-adherent coating Expired - Lifetime EP1242195B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19963670A DE19963670C2 (en) 1999-12-29 1999-12-29 Process for producing a non-stick coating, non-stick coating and use of a non-stick coating
    DE19963670 1999-12-29
    PCT/EP2000/013313 WO2001049424A2 (en) 1999-12-29 2000-12-28 Method for producing an anti-adherent coating, anti-adherent coating and use of an anti-adherent coating

    Publications (2)

    Publication Number Publication Date
    EP1242195A2 EP1242195A2 (en) 2002-09-25
    EP1242195B1 true EP1242195B1 (en) 2003-11-19

    Family

    ID=7934931

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00991647A Expired - Lifetime EP1242195B1 (en) 1999-12-29 2000-12-28 Method for producing an anti-adherent coating, anti-adherent coating and use of an anti-adherent coating

    Country Status (4)

    Country Link
    EP (1) EP1242195B1 (en)
    AT (1) ATE254511T1 (en)
    DE (2) DE19963670C2 (en)
    WO (1) WO2001049424A2 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US10654234B2 (en) * 2014-06-12 2020-05-19 Bridgestone Corporation Tire building drum

    Families Citing this family (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AU5469701A (en) * 2000-03-20 2001-10-03 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Surface, method for the production thereof and an object provided with said surface
    DE102005037338A1 (en) * 2005-08-04 2007-02-08 Starnberger Beschichtungen Gmbh Producing a nonstick coating on a substrate comprises applying a primer coat having inclusions, applying a top coat and heat-treating the top coat
    US8354160B2 (en) * 2006-06-23 2013-01-15 3M Innovative Properties Company Articles having durable hydrophobic surfaces
    DE102009049137A1 (en) * 2009-10-12 2011-04-14 Rhenotherm Kunststoffbeschichtungs Gmbh coating System
    WO2020126355A1 (en) 2018-12-20 2020-06-25 Arlanxeo Deutschland Gmbh Cutting tool and method for setting a target weight
    GB2582751B (en) 2019-03-29 2021-07-07 Thermo Fisher Scient Ecublens Sarl Improved spark stand for optical emission spectrometry

    Family Cites Families (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3644211A1 (en) * 1985-12-24 1987-08-27 Braun Ag Pressing iron sole plate
    US5181558A (en) * 1990-11-13 1993-01-26 Matsushita Refrigeration Company Heat exchanger
    DE4113211A1 (en) * 1991-04-23 1992-10-29 Winfried Heinzel METHOD FOR COATING HOUSEHOLD AND KITCHEN EQUIPMENT
    GB9222275D0 (en) * 1992-10-23 1992-12-09 Meyer Manuf Co Ltd Cookware and a method of forming same
    DE4323117C1 (en) * 1993-07-10 1995-03-09 Ptg Plasma Oberflaechentech Process for coating household and kitchen equipment and household and kitchen equipment
    EP0719594A1 (en) * 1994-12-27 1996-07-03 Stefan Hort Process for coating an object, in particular kitchen utensils, and objects coated in this way

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US10654234B2 (en) * 2014-06-12 2020-05-19 Bridgestone Corporation Tire building drum

    Also Published As

    Publication number Publication date
    DE50004528D1 (en) 2003-12-24
    EP1242195A2 (en) 2002-09-25
    WO2001049424A3 (en) 2002-02-14
    DE19963670C2 (en) 2003-03-06
    ATE254511T1 (en) 2003-12-15
    WO2001049424A2 (en) 2001-07-12
    DE19963670A1 (en) 2001-07-12

    Similar Documents

    Publication Publication Date Title
    EP2308607B1 (en) Coating structure
    DE60016644T2 (en) With molten fluoropolymers coated Polytetrafluoroethylenformkörper
    EP2599843B1 (en) Non-stick coating comprising PEK and/or PEEK
    DE19941410B4 (en) Coating and process for its production
    DE102012212954B4 (en) Cold sprayed and heat treated magnesium coating
    EP1272442B1 (en) Glass ceramic and metal substrates with a self-cleaning surface, method for the production and use thereof
    EP0510546B1 (en) Process for coating household and kitchen utensils
    EP0894541B1 (en) Article with a non-stick coating
    EP3964300B1 (en) Fluorine-free antiadhesive coating and method for the production of same
    WO2006081801A1 (en) Article with anti-adhesion coating and method for production thereof
    DE102005063510B4 (en) Use of a method for coating a printing stencil of an SMT process
    EP1242195B1 (en) Method for producing an anti-adherent coating, anti-adherent coating and use of an anti-adherent coating
    WO2011151205A1 (en) Method for cold gas spraying of a layer having a metal microstructure phase and a microstructure phase made of plastic, component having such a layer, and use of said component
    EP0974404B1 (en) Article with a coating containing a pigment, a fluoropolymer and a binding resin , process for manufacturing it and use
    DE2928081C2 (en) Laminated composite material and process for its manufacture
    DE10301135A1 (en) To coat a workpiece with a wear-resistant layer, without current or an electrolyte, the metal contains a proportion of non-metallic particles with the required hardness and low-friction non-stick characteristics
    EP0330048A2 (en) Method of making powder coatings from thermoplastic fluororesins
    DE10252142A1 (en) Coating material with long-term anti-corrosion properties for production of non-stick coatings, e.g. on cooking equipment, contains at least bimodal, fusible fluorocarbon polymer with a wide melting range
    DE2415327C2 (en) Process for the production of a plain bearing with a polyphenylene sulfide sliding layer
    DE19964627B4 (en) Coating for sealing substrates, especially for production of cylinder head gaskets, contains thermoplastic fluoropolymer and shows decreasing hardness from the coated surface outwards
    DE2546458B2 (en) Powder coating process
    DE102022121273A1 (en) Powder mixture for Teflon-free non-stick coating
    DE19935721C2 (en) High temperature resistant layer composite
    DE202013012522U1 (en) Ceramic coating of plastic
    DE2015761A1 (en) Process for applying coatings from polymers of arylene thioethers

    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: 20020420

    AK Designated contracting states

    Kind code of ref document: A2

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

    17Q First examination report despatched

    Effective date: 20021115

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

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

    Owner name: RHENOTHERM KUNSTSTOFFBESCHICHTUNGS GMBH

    RIN1 Information on inventor provided before grant (corrected)

    Inventor name: EIGENBROD, VOLKMAR

    GRAS Grant fee paid

    Free format text: ORIGINAL CODE: EPIDOSNIGR3

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

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

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: TR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031119

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031119

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031119

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: FR

    Payment date: 20031218

    Year of fee payment: 4

    REF Corresponds to:

    Ref document number: 50004528

    Country of ref document: DE

    Date of ref document: 20031224

    Kind code of ref document: P

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20031228

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031228

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20031231

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: GERMAN

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040219

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040219

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040219

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20040302

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: KELLER & PARTNER PATENTANWAELTE AG

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 20040308

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FD4D

    ET Fr: translation filed
    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

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

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20040820

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20041228

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20050701

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20041228

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20050831

    NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

    Effective date: 20050701

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: AT

    Payment date: 20051223

    Year of fee payment: 6

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20051228

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: BE

    Payment date: 20060102

    Year of fee payment: 6

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: CH

    Payment date: 20061227

    Year of fee payment: 7

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20061231

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20061228

    BERE Be: lapsed

    Owner name: *RHENOTHERM KUNSTSTOFFBESCHICHTUNGS G.M.B.H.

    Effective date: 20061231

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040419

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20071231

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20071231

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20151222

    Year of fee payment: 16

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R119

    Ref document number: 50004528

    Country of ref document: DE

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20170701