EP2651632B1 - Revêtement de lame imprégné - Google Patents

Revêtement de lame imprégné Download PDF

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Publication number
EP2651632B1
EP2651632B1 EP11787852.0A EP11787852A EP2651632B1 EP 2651632 B1 EP2651632 B1 EP 2651632B1 EP 11787852 A EP11787852 A EP 11787852A EP 2651632 B1 EP2651632 B1 EP 2651632B1
Authority
EP
European Patent Office
Prior art keywords
coating
blade according
blade
polymer
oxide
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.)
Revoked
Application number
EP11787852.0A
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German (de)
English (en)
Other versions
EP2651632A1 (fr
Inventor
Jürgen ANGERLER
Alexander Etschmaier
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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.)
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Publication date
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Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2651632A1 publication Critical patent/EP2651632A1/fr
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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00Doctors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/12Crêping
    • B31F1/14Crêping by doctor blades arranged crosswise to the web
    • B31F1/145Blade constructions
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00Doctors
    • D21G3/005Doctor knifes
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22Addition to the formed paper
    • D21H23/32Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper

Definitions

  • the invention relates to blades for papermaking machines and, more particularly, to the formation of blades for use in creping or scraping a paper web.
  • the nonwoven web produced in the papermaking process In order to produce the surface properties required for the particular application of a type of paper, the nonwoven web produced in the papermaking process, the so-called raw paper web, generally has to be subjected to a separate treatment. For this purpose, high-quality paper grades are deleted, hygiene papers are creped.
  • the creping process produces paper types with surface textures.
  • a blade usually referred to as a creping doctor
  • a creping doctor with its working edge is applied to the surface of a drying cylinder or Yankee cylinder (steam-heated cylinder, usually several meters in diameter), which separates the paper web from the cylinder.
  • the creping doctor has a run-on surface arranged close to its working edge, on which the paper web is jammed upon impact and thereby structured.
  • the paper web surface is painted on this usually pasty line layer of pigments, binders and excipients.
  • the coating of the paper web can be done in a separate operation, but is usually integrated into the papermaking process by incorporating a coating into the paper machine. Smooth paper surfaces come with a Coating achieved in which the coating composition is applied to the paper and the excess mass is then removed with a blade. By the pressure exerted by the blade, referred to as a doctor blade, on the coating mass, the depressions of the paper surface are filled with the coating composition, thus achieving a uniform surface of the coated paper.
  • creping scrapers and doctor blades are therefore usually provided with a coating which has a higher wear resistance or lower wear rate than the base material of the blade.
  • Such coatings are usually made of an abrasion resistant material using metal oxides or cemented carbides in which a metal carbide is embedded in a cobalt, nickel or iron matrix.
  • thermal spraying techniques are used, wherein the coating material is often applied in several strokes. Each of the strokes applies a thin layer of coating material to the base material of the blade or to the coating layer applied last thereon.
  • the application of the coating in several thin layers ensures that the components of the coating material can not segregate during the construction of the coating.
  • a macroscopically homogeneous coating can thus be produced on the basis of the chemical and physical identity of the individual layers.
  • a squeegee in particular for doctoring ink from a surface of a printing forme and / or for use as a paper doctor blade, comprises a flat and elongated base body having a working edge region formed in a longitudinal direction, at least the working edge region having a first coating on the base a nickel-phosphorus alloy is coated.
  • Monocrystalline and / or polycrystalline diamond particles are dispersed in the first coating, with a particle size of the diamond particles measuring at least 5 nm and less than 50 nm.
  • the coating is designed to extend the life of the squeegee while ensuring that the coating is evenly painted.
  • the nonwoven web handling blade comprises a base body and a coating covering at least a portion of the surface of the body, the coating forming at least the portion of the blade surface intended to contact the nonwoven web and the coating at the contact surface has an open-pore material whose pores are at least partially filled with a polymer.
  • a blade according to this embodiment has good sliding properties and a dirt-repellent effect on the contact surface provided for contact with a product guided along it. These properties reduce the forces on the coating, thereby increasing the life of the coating and reducing the risk of damage to the coating during use of the blade.
  • the dirt repellent effect of the contact surface prevents the attachment of particles and contaminants at and near the coating surface in contact with the paper web, thus improving the quality of the paper produced.
  • the polymer comprises an epoxy resin, since this wets well the open-cell coating material in the non-crosslinked or partially crosslinked state and thereby can penetrate deep into the pores of the coating.
  • the polymer advantageously comprises a silicone-polyester resin, as this combines very good non-stick and thus sliding properties with excellent dirt-repellent effect.
  • fillers may be embedded in the polymer, the fillers of preferred embodiments thereof containing polyfluoroethylene (PFE) and in particular polytetrafluoroethylene (PTFE).
  • the fillers are present in the form of particles and in particular in the form of particles with mean diameters in the range of 0.1 to 5 ⁇ m .
  • the polymer may also be formed directly from polyfluoroethylene and in particular polytetrafluoroethylene or from a polymer comprising such a substance.
  • polytetrafluoroethylene particles having sizes from the range are preferred slurried from about 50 to 100 nm and introduced the resulting dispersion in the pores, for example by means of an immersion bath, by spraying or by applying with a brush or other coating device.
  • a polymer is used which is in the form of particles having a size distribution in which at least 65 percent of the particles have one or more sizes from the range of 50 to 100 nm.
  • the open-pored base material of the coating is formed in embodiments of an oxide ceramic or a mixture of two or more oxide ceramics.
  • Other embodiments include an open-pore coating base material comprising one or more oxide ceramics.
  • the oxide ceramics in preferred embodiments, are selected from alumina, zirconia, magnesia, chromium (III) oxide, yttria, and titanates, which combine good mechanical resistance with high abrasion resistance and can be applied to the blade main body by modern high speed injection techniques such as HVOF .
  • the open cell material of the coating comprises a cemented carbide which also combines good mechanical resistance with high abrasion resistance and can be effectively and economically applied to the blade body with modern high speed injection molding techniques.
  • the porosity of the coating base material is preferably between 2 and 10 percent, these values representing the area proportions of the pores in a cross-section passing through the material.
  • the average pore diameter of the coating base material in embodiments has a value in the range of 5 to 15 ⁇ m .
  • an adhesive layer is arranged between these in embodiments.
  • a blade as indicated above is designed as a creping doctor with a working edge and a shoulder surface or as a doctor blade.
  • FIG. 1 shows a cross section through the front portion of a provided with a coating 12 Kreppschabers 10.
  • the creping blade 10 has a molded example of steel base body 11, on which a coating 12 is applied.
  • the coating 12 occupies at least the portion of the creping doctor 10 which comes into contact with the dry or Yankee cylinder and the nonwoven web of the paper web.
  • an intermediate layer 13 may be provided between the coating 12 and the Base 11 between the coating 12 and the Base 11 .
  • the working edge with which the creping doctor rests against the drying or Yankee cylinder adjoins the run-on surface on which the paper web impinges. Bake surface and working edge 14 are formed on the coating 12.
  • the coating 12 has two components, a coating matrix or coating carrier layer formed by a coating base material, in which the smallest cavities 17 are formed, and one in the cavities 17 the coating matrix arranged polymer.
  • the density of the cavities is approximately constant in the illustrated embodiment.
  • the cavities are formed when the coating material is applied to the base body 11 or to the adhesion promoter layer 13 and are called pores.
  • the density of the pores 17 does not have to be approximately constant as shown, but may change from the surface of the coating in the direction of the main body, for example in order to promote rapid shrinkage of the creping doctor 10.
  • the coating matrix has an open-pore design, the term "open-pored” meaning that cavities located deeper in the matrix are connected to cavities located on the surface of the coating.
  • the coating 12 has a porosity in the range from about 2 to 10 percent, these values, as already mentioned above, representing the area proportions of the pores in a cross-section passing through the material.
  • the coating base material is first applied to the base body 11 or, if an adhesion promoter is used, applied to the adhesion promoter layer 13 previously applied eg to the base body 11 using a thermal spraying method.
  • the selection of suitable materials for the formation of the primer layer depends both on the material used to form the body, as well as the particular coating base material used. If the main body 11 on the surface to be coated, for example made of steel, then the material for the primer layer may be selected from aluminum, nickel, chromium and alloys thereof, such as AlNi or NiCr in the coating materials listed below.
  • a thermal spraying method is preferably used for application of the coating base material.
  • the spray coating is preferably carried out in several strokes, for example with 10 to 100 strokes. Each stroke generates a thin layer of the coating material, wherein the first layer is sprayed directly onto the surface of the main body 11 or the adhesive layer previously applied thereto, and further layers are sprayed onto the respectively previously applied layer.
  • the physical homogeneity or, conversely, the porosity of the individual layers can be adjusted via the parameters of the method used.
  • HVOF High Velocity Oxygen Fuel
  • the porosity can be adjusted by the ratio of fuel to oxygen and the rate of delivery of the powder material used for film formation. By changing the parameters from layer to layer, the porosity can be changed over the layer depth in the above-mentioned ranges.
  • hard metal powders with about 8-10% cobalt and tungsten monocarbide as hard material are suitable as the coating base material.
  • ceramic coatings are preferably powder oxide ceramic materials such. Alumina, zirconia, magnesia, crom (III) oxide, yttria and titanates.
  • the filling of pores in this document means the introduction of material into the pores, wherein the introduced material does not have to completely fill the respective pore volume, but can.
  • the introduced material can be applied to the pore walls, but it can also be arranged completely or partially detached from the pore walls in the pore volume.
  • Suitable polymers are thermosets and thermoplastics, which can be prepared on the basis of one-component and two-component systems. Particularly suitable are thermosets whose decomposition temperature is so far above the operating temperature of the blade coating that the thermoset behaves elastically. In an analogous manner, thermoplastics whose glass transition temperature is so far above the operating temperature of the blade coating, that when using the blade impregnated with the polymer no disturbing softening of the polymer can occur. As a rough guideline for the minimum difference between operating temperature and decomposition or glass transition temperature 20 ° C can be specified. Operating temperature is understood to mean the operating temperature of the blade coating during the intended use of the blade.
  • Particularly suitable polymers are epoxy resins and epoxy resins with filler particles embedded therein, for example of a polyfluoroethylene (PFE) and in particular of polytetrafluoroethylene (PTFE).
  • PFE polyfluoroethylene
  • PTFE polytetrafluoroethylene
  • epoxy resin shows a good wetting of the coating base material in the non-crosslinked or partially crosslinked state, it can, for example, assisted by capillary action, penetrate deep into its open pores and fill them.
  • the viscosity of the epoxy resin can be reduced by the addition of solvents, such as alcohols or ketones, to adjust the penetration depth of the polymer to the thickness of the coating.
  • the impregnation process i. the introduction of the material into the pores of the blade coating can be done using a dip bath; by spraying, or by means of painting tools such. B. brushing or filling.
  • a creping blade 10 is m thick NiAl 5 -Haftvermittler für 13 applied to a surface area of a shaped steel base body 11 using a thermal spray process an approximately 50 ⁇ .
  • a Cr 2 O 3 ceramic is subsequently applied to the free surface of the adhesion promoter layer 13 by means of a plasma spraying process, for example the above-mentioned HVOF process.
  • the Cr 2 O 3 powder used for the application preferably has a particle size distribution in which the grain size, which is not exceeded by 90% of the hard grains, is at least twice as large and preferably at least three times as large as the grain size, that of 10 % of the grains of hard material is not fallen below, in particular, a particle size distribution of 15/45 in which 90% of the powder grains is not larger than 45 ⁇ m and 10% of the powder grains is not less than 15 ⁇ m is preferred.
  • the thickness of the applied Cr 2 O 3 layer is according to embodiments about 300 ⁇ m, the porosity of the layer about 2 to 3%, wherein the average pore diameter in the range of about 5 to 15 ⁇ m are. Pore diameter here is to be understood as meaning the diameter of a circle whose surface area corresponds to the pore cross-section at the respective location.
  • the hardness of a Cr 2 O 3 coating layer produced in this way can be given as approximately 1150 HV0.3 (Vickers hardness in HV).
  • a filling material is introduced into its pores 17.
  • the filler is composed of a mixed with isobutanol silicone polyester resin containing PTFE particles with average sizes of 0.1 to 5 microns .
  • the proportions of the silicone-polyester resin in the filler are between 40 and 70% by weight, that of the isobutanol between 10 and 60% by weight and that of the PTFE particles between 2 and 20% by weight.
  • a likewise preferred embodiment differs from the one described above in the choice of filling material.
  • the filling material of this embodiment consists of a mixture of epoxy resin and isobutanol containing PTFE particles with average diameters of 0.1 to 5 ⁇ m .
  • the proportions of the epoxy resin on the filler material are again between 40 and 70% by weight, that of the isobutanol between 10 and 60% by weight and that of the PTFE particles between 2 and 20% by weight.
  • the depth to which the filler penetrates into the coating matrix 16 is influenced by the viscosity of the filler and the temperature of the coating matrix during the filling process. At high solvent contents, the viscosity of the filling material is low, whereby the pores can be filled to great depths. By heating the Coating matrix during filling, the maximum penetration depth of the filling material can be further increased provided that the temperature is sufficiently below the crosslinking temperature. Penetration temperatures from the range of about 70 to about 90 ° C, and preferably about 80 ° C are suitable for the above Golfmaterialsysteme, which at the above mean pore diameters of about 5 to 15 ⁇ m penetration depths of about 800 to about 1000 ⁇ m can be achieved.
  • the filling material After the introduction of the filling material into the pores of the coating matrix 12, it is preferably thermally crosslinked, whereby the impregnation of the coating matrix 16 is completed. Finally, the free surface of the impregnated coating 12 is honed to create a smooth ramp surface and a smooth working edge. With such a regrind, usually about 50 ⁇ m of coating material are removed.
  • the described sequence of impregnation and fine grinding is not mandatory and may possibly also be carried out reversed.
  • non-woven fabric and dry or Yankee cylinders with little friction can slide along the respective contact surfaces of the creping doctor.
  • the increased lubricity of the contact surfaces reduces the abrasion of the coating.
  • the contact surfaces are provided with a dirt-repelling effect by the polymer layer, which reduces damage to the coating by particles and impurities entrained by the non-woven fabric or the Yankee cylinder and thus improves the quality of the creped paper.
  • FIG. 2 Figure 14 shows a cross-section through the front portion of a doctor blade 20 provided with a coating 22.
  • the doctor blade comprises a base body 21, which may be formed of steel, for example, and a coating 22 and an adhesion-promoting layer 23 disposed between the two in some embodiments 22 occupies at least the part of the doctor blade 20, which comes into contact with the nonwoven fabric of the paper web or a sheeting applied thereto.
  • the doctor blade 20 has a chamfer, commonly referred to as wate.
  • the coating 22 covers the main body 21, as illustrated in the figure, also in the area of the wate.
  • the coating structure of the doctor blade corresponds to that of the creping doctor, i. H.
  • the coating consists of a porous coating matrix as described above, the pores of which are at least partially filled with a polymer as likewise mentioned above.
  • the contact surface of the coating to the paper web has an improved lubricity and dirt-repellent effect, thus reducing the likelihood of damage to the coating resulting in microlining manifesting on the coated paper in the form of linear irregularities can.
  • the more lubricious and dirt-repellent coating surface reduces the use of the doctor blade less dirt and line material on the opposite side of the paper, whereby the risk of wet and dry overcooking and the formation of a beard at the blade tip is significantly reduced.
  • Blades according to the invention described have improved abrasion resistance due to the better sliding properties on the coating surface than blades with not suitably impregnated coatings.
  • the impregnation also reduces the likelihood of damage to the coating during operation and, due to its stain-resistant effect, improves the quality of a paper web processed with the blade.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Claims (16)

  1. Lame pour le traitement de bandes de non-tissés fibreux, comprenant un corps de base (11, 21) et un revêtement (12, 22) recouvrant au moins une partie de la surface du corps de base, le revêtement formant au moins la partie de la surface de la lame qui est prévue pour le contact avec la bande de non-tissé fibreux, caractérisée en ce que le revêtement (12, 22) comprend au niveau de la surface de contact un matériau à pores ouverts (16), dont les pores (17) sont au moins partiellement remplis avec un polymère.
  2. Lame selon la revendication 1, dans laquelle le polymère comprend une résine époxyde.
  3. Lame selon la revendication 1, dans laquelle le polymère comprend une résine de silicone-polyester.
  4. Lame selon l'une quelconque des revendications 1, 2 ou 3, dans laquelle des charges sont incorporées dans le polymère.
  5. Lame selon la revendication 4, dans laquelle les charges contiennent du polyfluoroéthylène et notamment du polytétrafluoroéthylène.
  6. Lame selon la revendication 4 ou 5, dans laquelle les charges se présentent sous la forme de particules et notamment sous la forme de particules de diamètres moyens dans la plage allant de 0,1 à 5 µm.
  7. Lame selon la revendication 1, dans laquelle le polymère comprend du polyfluoroéthylène et notamment du polytétrafluoroéthylène.
  8. Lame selon la revendication 7, dans laquelle le polymère est mis sous la forme de particules présentant une distribution de tailles selon laquelle au moins 65 pour cent des particules présentent une ou plusieurs tailles dans la plage allant de 50 à 100 nm.
  9. Lame selon l'une quelconque des revendications précédentes, dans laquelle le matériau à pores ouverts (16) du revêtement comprend une céramique oxydée ou plusieurs céramiques oxydées.
  10. Lame selon la revendication 9, dans laquelle le matériau à pores ouverts (16) du revêtement est choisi parmi l'oxyde d'aluminium, l'oxyde de zirconium, l'oxyde de magnésium, l'oxyde de chrome (III), l'oxyde d'yttrium et les titanates.
  11. Lame selon l'une quelconque des revendications précédentes, dans laquelle le matériau à pores ouverts (16) du revêtement comprend un métal dur.
  12. Lame selon l'une quelconque des revendications précédentes, dans laquelle le matériau à pores ouverts présente une porosité dans la plage allant de 2 à 10 %.
  13. Lame selon l'une quelconque des revendications précédentes, dans laquelle le diamètre de pore moyen présente une valeur dans la plage allant de 5 à 15 µm.
  14. Lame selon l'une quelconque des revendications précédentes, dans laquelle une couche adhésive (13, 23) est agencée entre le revêtement (12, 22) et le corps de base (11, 21).
  15. Lame selon l'une quelconque des revendications précédentes, dans laquelle la lame (10, 20) est configurée sous la forme d'un couteau racleur (10) comprenant un bord de travail (14) et une surface inclinée (15).
  16. Lame selon l'une quelconque des revendications 1 à 14, dans laquelle la lame (10, 20) est configurée sous la forme d'un racloir (20).
EP11787852.0A 2010-12-13 2011-11-22 Revêtement de lame imprégné Revoked EP2651632B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062901A DE102010062901A1 (de) 2010-12-13 2010-12-13 Imprägnierte Klingenbeschichtung
PCT/EP2011/070659 WO2012079923A1 (fr) 2010-12-13 2011-11-22 Revêtement de lame imprégné

Publications (2)

Publication Number Publication Date
EP2651632A1 EP2651632A1 (fr) 2013-10-23
EP2651632B1 true EP2651632B1 (fr) 2015-02-25

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ID=45033969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11787852.0A Revoked EP2651632B1 (fr) 2010-12-13 2011-11-22 Revêtement de lame imprégné

Country Status (5)

Country Link
US (1) US20130269897A1 (fr)
EP (1) EP2651632B1 (fr)
CN (1) CN103347688A (fr)
DE (1) DE102010062901A1 (fr)
WO (1) WO2012079923A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010062901A1 (de) * 2010-12-13 2012-06-14 Voith Patent Gmbh Imprägnierte Klingenbeschichtung
DE102014012738B4 (de) * 2014-08-27 2023-03-30 Rampf Formen Gmbh Form, Rüttelbare Unterlage und Ziehblech mit beschichteten Oberflächen, Verfahren zu deren Herstellung sowie Verwendung der Beschichtungen
CN106182906A (zh) * 2016-07-13 2016-12-07 北京华恩表面工程技术有限公司 一种起皱刀及其制备方法
CN106493437A (zh) * 2016-12-29 2017-03-15 泰州前进科技有限公司 一种刮刀
WO2018181034A1 (fr) * 2017-03-29 2018-10-04 京セラ株式会社 Outil revêtu et outil de coupe
DE102018214778A1 (de) * 2018-08-30 2020-03-05 Siemens Aktiengesellschaft Verfahren zur Fertigung von Leiterbahnen und Elektronikmodul
EP4137304A1 (fr) * 2021-08-16 2023-02-22 Voith Patent GmbH Lame et agencement de crêpage

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731360A (en) * 1951-04-06 1956-01-17 Glacier Co Ltd Method for incorporating a solid lubricant into a porous metallic surface
GB978988A (en) * 1962-12-14 1965-01-01 Lodding Engineering Corp Doctor blade
US3703019A (en) * 1970-10-15 1972-11-21 Norton Co Surface conforming wear resistant doctor blade for rolls
JPS56120349A (en) * 1980-02-27 1981-09-21 Dainippon Printing Co Ltd Doctor blade for printing gravure
GB2295400B (en) * 1994-11-01 1998-04-01 Plasma Coatings Ltd Blade and method of manufacture thereof
SE506563C2 (sv) * 1996-05-02 1998-01-12 Btg Eclepens Sa Kräppningsblad
FI111343B (fi) * 1998-06-09 2003-07-15 Metso Paper Inc Kaavinterä ja terän pidin
FR2780318B1 (fr) * 1998-06-29 2000-09-08 Radiance Lame composite, pouvant trouver application dans differents domaines techniques ou industriels, notamment dans l'industrie papetiere et l'imprimerie
US20020098376A1 (en) * 2000-10-20 2002-07-25 Morris Harry C. Friction guard blade and a method of production thereof
US6643890B2 (en) * 2000-12-01 2003-11-11 S. D. Warren Services Company Composite doctor blades
SE519466C2 (sv) * 2000-12-07 2003-03-04 Swedev Ab Schaber - eller rakelblad med beläggning av nickel innefattandes nötningsbeständiga partiklar och metod vid dess framställning
JP2003089993A (ja) * 2001-09-19 2003-03-28 Ichikawa Woolen Textile Co Ltd 水切り用ドクターブレード
US7152526B2 (en) * 2002-01-29 2006-12-26 Nihon New Chrome Co., Ltd. Surface treated doctor blade
SE527180C2 (sv) * 2003-08-12 2006-01-17 Sandvik Intellectual Property Rakel- eller schaberblad med nötningsbeständigt skikt samt metod för tillverkning därav
SE0302400D0 (sv) * 2003-09-08 2003-09-08 Btg Eclepens Sa Creping blade
SE526191C2 (sv) * 2003-12-19 2005-07-26 Sandvik Ab Eggförsett verktyg och metod för framställning därav
US7431801B2 (en) * 2005-01-27 2008-10-07 The Procter & Gamble Company Creping blade
FI117676B (fi) * 2005-06-14 2007-01-15 Ingmar Westerlund Consulting O Menetelmä ja laitteisto paperirainan käsittelyterän kulutusta kestävän pinnoitteen valmistamiseksi ja käsittelyterä
EP1745862A1 (fr) * 2005-07-21 2007-01-24 C.B.G. Acciai S.r.l. Racle, revêtue d'un matériau polymérique, pour fonctionner en combinaison avec un cylindre d'impression
US7691236B2 (en) * 2006-07-26 2010-04-06 The Procter + Gamble Company Creping blade with a highly smooth bevel surface
CH699702A1 (de) * 2008-10-07 2010-04-15 Daetwyler Swisstec Ag Diamantbeschichtete Rakel.
DE102009029698A1 (de) * 2009-09-23 2011-03-24 Voith Patent Gmbh Klingenbeschichtung
DE102009029697A1 (de) * 2009-09-23 2011-03-24 Voith Patent Gmbh Spritzpulver zur Cermet-Beschichtung von Rakelklingen
US9132687B2 (en) * 2010-01-20 2015-09-15 Daetwyler Swisstec Ag Doctor blade
DE102010062901A1 (de) * 2010-12-13 2012-06-14 Voith Patent Gmbh Imprägnierte Klingenbeschichtung

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CN103347688A (zh) 2013-10-09
EP2651632A1 (fr) 2013-10-23
WO2012079923A1 (fr) 2012-06-21
DE102010062901A1 (de) 2012-06-14
US20130269897A1 (en) 2013-10-17

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