WO2001049424A2 - Procede de realisation d'un revetement anti-adherent, revetement anti-adherent et utilisation d'un revetement anti-adherent - Google Patents

Procede de realisation d'un revetement anti-adherent, revetement anti-adherent et utilisation d'un revetement anti-adherent Download PDF

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Publication number
WO2001049424A2
WO2001049424A2 PCT/EP2000/013313 EP0013313W WO0149424A2 WO 2001049424 A2 WO2001049424 A2 WO 2001049424A2 EP 0013313 W EP0013313 W EP 0013313W WO 0149424 A2 WO0149424 A2 WO 0149424A2
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WO
WIPO (PCT)
Prior art keywords
stick coating
substrate
layer
base layer
plastic material
Prior art date
Application number
PCT/EP2000/013313
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German (de)
English (en)
Other versions
WO2001049424A3 (fr
Inventor
Volkmar Eigenbrod
Original Assignee
Volkmar Eigenbrod
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 Volkmar Eigenbrod filed Critical Volkmar Eigenbrod
Priority to EP00991647A priority Critical patent/EP1242195B1/fr
Priority to DE50004528T priority patent/DE50004528D1/de
Priority to AT00991647T priority patent/ATE254511T1/de
Publication of WO2001049424A2 publication Critical patent/WO2001049424A2/fr
Publication of WO2001049424A3 publication Critical patent/WO2001049424A3/fr

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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 and to the non-stick coating itself and uses of this non-stick coating.
  • a non-stick coating means a layer structure which, according to the invention, is such that it is particularly suitable, for example, for rollers or other machine parts in the adhesive, rubber and / or paint processing industry.
  • This is particularly relevant where certain surface areas, for example of labels, adhesive tapes, diapers and other products of the paper, adhesive, lacquer and rubber industries, should have the property that adhesive or other sticky media do not adhere there; this allows deliberately limited adhesive areas to be created while the neighboring areas can not stick. That is, the adhesive or other sticky media can be applied by machine in a targeted and localized manner.
  • the correspondingly coated tools such as rollers in the paper industry for producing multilayer or laminated paper, remain glue-free.
  • Non-stick coatings of the type mentioned are known. They are based on the so-called lotus effect in accordance with the objective type. Certain plant leaves, namely the leaves of the lotus flower (Nelumbo nucitera), are not smooth in the microscopic range, but have a surface with regular micro elevations. This configuration ensures that water drops pick up and remove dirt particles when they roll off. This ensures that the surface of the leaf of the lotus flower is always kept clean.
  • EP 0 485 801 B1 discloses a heat exchanger which has a multiplicity of plate-shaped fins. A mixture consisting of a solution containing a silicone resin compound and finely divided inorganic particles is applied to the fin surface. Silicone is used as the base layer. It is also provided there that the surface of the layer has regularly distributed micro elevations.
  • the invention is therefore based on the object, a method for producing a non-stick coating and a non-stick coating to create, 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 surface of the layer is provided with a plurality of substantially regularly distributed micro elevations by adding components to the plastic material before application to the substrate, which both prevent the plastic material from running when it is processed and also form the formation of essentially regularly distributed ones Favor micro-surveys,
  • a base layer is first applied to the substrate such that it has a largely regular surface structure.
  • the idea of the invention is based on the fact that on a substrate, the surface of which can be structured or receives a surface structure by applying a base layer, a plastic layer is applied.
  • This layer has a microstructure, which is held in position by the inclusions introduced into the plastic material. The addition of the components does not cause the surface to run, which would make it smooth.
  • the components which work best in this regard are the 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, the surface does not become uniform, but that the surface retains the microstructure.
  • a base layer is first applied to the substrate and then the layer of plastic material is applied to this.
  • the base layer is applied to the substrate so that it has a largely regular surface structure.
  • Fluoropolymer is the most suitable plastic material for the coating. These are, in particular, polytetrafluoroethylene (PTFE), a mixture (PFA) of tetrafluoroethylene and fluorophenyl ether or a tetrafluoroethylene / hexafluoropropylene copolymer (FEP). However, it can also be a mixture of at least two components of PTFE, PFA and FEP. A particularly hard bond results if the layer of plastic material is sintered on the substrate or on the base layer.
  • PTFE polytetrafluoroethylene
  • PFA mixture
  • FEP tetrafluoroethylene / hexafluoropropylene copolymer
  • a particularly hard bond results if the layer of plastic material is sintered on the substrate or on the base layer.
  • the sintering process is preferably carried out at a temperature at which the plastic melts in the layer on the substrate or on the base layer, but does not yet flow; a temperature between 340 ° C and 400 ° C is suitable for the materials mentioned.
  • the sintering process itself takes between 3 and 60 minutes.
  • the base layer can be formed like a knob.
  • the substrate For the purpose of good preparation of the substrate, it is provided that it is sandblasted before applying the base layer or before applying the layer of plastic material. Alternatively, it can be etched.
  • 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 has 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
  • a base layer is arranged between the substrate and the plastic layer, which has a largely regular surface structure.
  • This construction also reflects the basic idea of the invention already mentioned above: a plastic film is applied to the structured base, which has a microstructure; this is held in position by the inclusions introduced into the plastic material.
  • a base layer is arranged between the substrate and the layer of plastic material; this has a 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 min- at least two components from PTFE, PFA and FEP.
  • PTFE polytetrafluoroethylene
  • PFA mixture
  • FEP tetrafluoroethylene / hexafluoropropylene copolymer
  • a fluorinated vinyl ether is, for example, a perfluorinated vinyl ether of the formula
  • CF 2 CF-0 -CF2-CF-O- CF 2 -CF 2 -CF 3 CF 3
  • 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 consist of steel, in particular of chromium-nickel steel, or of ceramic material, in particular of tungsten carbide or aluminum oxide; it should preferably have a roughness of 1 to 30 ⁇ m 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.
  • a plurality of plastic layers arranged one above the other can be applied to the substrate or to the surface of the base layer.
  • the height of the applied layer or Layers above the surface of the substrate are between 25 and 100 ⁇ m, preferably 50 ⁇ m.
  • the proposed non-stick coating is preferably used as a surface material for rollers for the processing of adhesives.
  • it is contemplated to use them for rollers for applying adhesives to foils or paper.
  • rollers for the application of adhesives to defined areas of diapers.
  • the coating can advantageously be used on rollers for the application of adhesives to rubber surfaces, in particular tires.
  • Another preferred use is the use of rollers for applying adhesives in the food industry.
  • Figure 1 is a schematic section through a layer structure.
  • FIG. 2 shows a detailed illustration of the detail "A" from FIG. 1;
  • Fig. 3 shows an alternative to Fig. 1 layer structure without a base layer. Ways of Carrying Out the Invention
  • a layer structure with a low-adhesion surface is sketched in FIG.
  • the non-stick coating 1 is extremely resistant to adhesion of adhesives and other sticky media.
  • the layer structure is used in particular for rollers for processing adhesives. Since the low-adhesion surface areas - as sketched - prevent adhesion of adhesives, this means that the correspondingly designed surfaces of a roller at least make the transfer of adhesive more difficult, so that the corresponding area to be rolled remains free or poor of adhesive and the rollers themselves do not pollute.
  • the layer structure 1 consists of a substrate 2 as a carrier element. This substrate 2 must first be degreased before further processing; then it can be pre-treated with sandblasting to ensure that the subsequent layers adhere well. A base layer 3 is then applied to the substrate 2.
  • the base layer can consist of metallic or ceramic material and can be applied by flame spraying, arc spraying, plasma or high-speed spraying.
  • the base layer 3, as can be clearly seen in FIG. 1, has a nub-like surface structure 4.
  • a layer 5 of plastic is then applied to this.
  • a fluoroplastic is preferably used, the components in the form of silicon carbide (SiC) or similar materials, polyphenylene sulfide (PPS) or polyamide (PA) are added.
  • the grain size of the constituents (additives) in the case of polyphenylene sulfide is approximately 30 ⁇ m; With silicon carbide, the grain size is approx. 3 ⁇ m.
  • the constituents mentioned are added to the fluoroplastic in an amount of approximately 20 percent by weight.
  • the entire layer structure that is applied to the substrate 2 has a height h of approximately 50 ⁇ m.
  • the fluoroplastic is then sintered in at approx. 360 ° C.
  • a microstructure is created as shown enlarged for detail "A" in FIG. 1 in FIG. 2.
  • the surface of the plastic layer 5 has a multiplicity of uniformly distributed micro elevations 6.
  • FIG. 3 A configuration corresponding to FIG. 1 is outlined in FIG. 3. It can be seen here that the layer of plastic material is applied directly to the surface substrate 2 - without an intermediate or base layer 3.
  • the water contact angle is the angle that the flanks of a resting water drop form at the point of contact with the subsurface. The larger the angle, the better the non-stick effect of the material.
  • 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 ⁇ m; Quantity added: approx. 20 percent by weight;
  • the non-stick coating described is used - as already mentioned - primarily in deflection rollers in the adhesive industry, for. B. for the production of adhesive films (Tesa film). Furthermore, by using such appropriately prepared rollers in diaper production, the area to be provided with adhesive can be delimited from the areas to be kept free thereof. Furthermore, a variety of other areas of application are conceivable (e.g. paper and film production, printing industry, rubber processing, etc.).

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un procédé de réalisation d'un revêtement anti-adhérent (1) présentant une surface à adhérence limitée et une surface anti-adhérente, ainsi que des utilisations de ce revêtement anti-adhérent. Pour garantir également la résistance aux solvants et à la corrosion ainsi que pour permettre une utilisation dans l'industrie alimentaire, le procédé se caractérise en ce qu'une couche (5) constituée d'au moins une matière plastique est déposée sur le substrat (2). La surface de la couche (5) comprend une pluralité de micro-aspérités (6) réparties de manière sensiblement homogène, que l'on obtient en apportant à la matière plastique avant sa mise en place sur le substrat (2), des éléments qui permettent à la fois d'empêcher l'écoulement de la matière plastique lors de son traitement, et de favoriser la formation de micro-aspérités (6) réparties de manière sensiblement homogène, le substrat présentant préalablement une surface structurée.
PCT/EP2000/013313 1999-12-29 2000-12-28 Procede de realisation d'un revetement anti-adherent, revetement anti-adherent et utilisation d'un revetement anti-adherent WO2001049424A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00991647A EP1242195B1 (fr) 1999-12-29 2000-12-28 Procede de realisation d'un revetement anti-adherent, revetement anti-adherent et utilisation d'un revetement anti-adherent
DE50004528T DE50004528D1 (de) 1999-12-29 2000-12-28 Verfahren zum herstellen einer antihaftbeschichtung, antihaftbeschichtung und verwendung einer antihaftbeschichtung
AT00991647T ATE254511T1 (de) 1999-12-29 2000-12-28 Verfahren zum herstellen einer antihaftbeschichtung, antihaftbeschichtung und verwendung einer antihaftbeschichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19963670.2 1999-12-29
DE19963670A DE19963670C2 (de) 1999-12-29 1999-12-29 Verfahren zur Herstellung einer Antihaftbeschichtung, Antihaftbeschichtung und Verwendung einer Antihaftbeschichtung

Publications (2)

Publication Number Publication Date
WO2001049424A2 true WO2001049424A2 (fr) 2001-07-12
WO2001049424A3 WO2001049424A3 (fr) 2002-02-14

Family

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PCT/EP2000/013313 WO2001049424A2 (fr) 1999-12-29 2000-12-28 Procede de realisation d'un revetement anti-adherent, revetement anti-adherent et utilisation d'un revetement anti-adherent

Country Status (4)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070416A2 (fr) * 2000-03-20 2001-09-27 Induflex Sondermaschinenbau Surface, son procede de realisation ainsi qu'objet presentant ladite surface
EP2051821A1 (fr) * 2006-06-23 2009-04-29 3M Innovative Properties Company Articles présentant des surfaces hydrophobes durables
EP2308607A1 (fr) 2009-10-12 2011-04-13 RHENOTHERM Kunststoffbeschichtungs GmbH Montage de revêtement
WO2020200757A1 (fr) 2019-03-29 2020-10-08 Thermo Fisher Scientific (Ecublens) Sarl Support d'allumage amélioré destiné à une spectrométrie d'émission optique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005037338A1 (de) * 2005-08-04 2007-02-08 Starnberger Beschichtungen Gmbh Antihaftbeschichtung, Verfahren zu dessen Herstellung und antihaftbeschichtete Substratmaterialien
JP6313128B2 (ja) * 2014-06-12 2018-04-18 株式会社ブリヂストン タイヤ成型ドラム
WO2020126355A1 (fr) 2018-12-20 2020-06-25 Arlanxeo Deutschland Gmbh Outil de coupe et procédé de réglage d'un poids cible

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644211A1 (de) * 1985-12-24 1987-08-27 Braun Ag Buegeleisensohle
EP0510546A1 (fr) * 1991-04-23 1992-10-28 Winfried Heinzel Procédé pour le revêtement d'utensiles de ménage ou de cuisine
EP0594374A1 (fr) * 1992-10-23 1994-04-27 Meyer Manufacturing Co., Ltd Ustensile de cuisson et procédé pour sa modification
EP0633327A1 (fr) * 1993-07-10 1995-01-11 PTG PLASMA-OBERFLÄCHENTECHNIK GmbH Procédé pour le revêtement d'utensiles de ménage et de cuisine
EP0719594A1 (fr) * 1994-12-27 1996-07-03 Stefan Hort Procédé pour revêtir un objet, notamment des ustentiles culinaires, et objet ainsi revêtus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181558A (en) * 1990-11-13 1993-01-26 Matsushita Refrigeration Company Heat exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644211A1 (de) * 1985-12-24 1987-08-27 Braun Ag Buegeleisensohle
EP0510546A1 (fr) * 1991-04-23 1992-10-28 Winfried Heinzel Procédé pour le revêtement d'utensiles de ménage ou de cuisine
EP0594374A1 (fr) * 1992-10-23 1994-04-27 Meyer Manufacturing Co., Ltd Ustensile de cuisson et procédé pour sa modification
EP0633327A1 (fr) * 1993-07-10 1995-01-11 PTG PLASMA-OBERFLÄCHENTECHNIK GmbH Procédé pour le revêtement d'utensiles de ménage et de cuisine
EP0719594A1 (fr) * 1994-12-27 1996-07-03 Stefan Hort Procédé pour revêtir un objet, notamment des ustentiles culinaires, et objet ainsi revêtus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070416A2 (fr) * 2000-03-20 2001-09-27 Induflex Sondermaschinenbau Surface, son procede de realisation ainsi qu'objet presentant ladite surface
WO2001070416A3 (fr) * 2000-03-20 2002-03-07 Induflex Sondermaschb Surface, son procede de realisation ainsi qu'objet presentant ladite surface
EP2051821A1 (fr) * 2006-06-23 2009-04-29 3M Innovative Properties Company Articles présentant des surfaces hydrophobes durables
EP2051821A4 (fr) * 2006-06-23 2011-06-01 3M Innovative Properties Co Articles présentant des surfaces hydrophobes durables
US8354160B2 (en) 2006-06-23 2013-01-15 3M Innovative Properties Company Articles having durable hydrophobic surfaces
EP2308607A1 (fr) 2009-10-12 2011-04-13 RHENOTHERM Kunststoffbeschichtungs GmbH Montage de revêtement
DE102009049137A1 (de) 2009-10-12 2011-04-14 Rhenotherm Kunststoffbeschichtungs Gmbh Beschichtungsaufbau
WO2020200757A1 (fr) 2019-03-29 2020-10-08 Thermo Fisher Scientific (Ecublens) Sarl Support d'allumage amélioré destiné à une spectrométrie d'émission optique

Also Published As

Publication number Publication date
DE19963670A1 (de) 2001-07-12
EP1242195A2 (fr) 2002-09-25
ATE254511T1 (de) 2003-12-15
DE19963670C2 (de) 2003-03-06
DE50004528D1 (de) 2003-12-24
EP1242195B1 (fr) 2003-11-19
WO2001049424A3 (fr) 2002-02-14

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