WO2000048747A1 - Method for sealing of a wearing face - Google Patents

Method for sealing of a wearing face Download PDF

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Publication number
WO2000048747A1
WO2000048747A1 PCT/FI2000/000110 FI0000110W WO0048747A1 WO 2000048747 A1 WO2000048747 A1 WO 2000048747A1 FI 0000110 W FI0000110 W FI 0000110W WO 0048747 A1 WO0048747 A1 WO 0048747A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
acrylates
sealing
ceramic
pulp
Prior art date
Application number
PCT/FI2000/000110
Other languages
French (fr)
Inventor
Petri Sorsa
Jari Knuuttila
Juhani Vestola
Kari Niemi
Original Assignee
Metso Paper, Inc.
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 Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to AU26740/00A priority Critical patent/AU2674000A/en
Publication of WO2000048747A1 publication Critical patent/WO2000048747A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • 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
    • B05D5/005—Repairing damaged coatings
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0246—Hard rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • the invention relates to a method for sealing a wearing surface in a pulp/paper/ board/finishing machine and/or for repairing damage in such a surface, as well as to the use of a UV curable sealing agent for sealing and/or for repairing wearing surfaces and, further, to articles manufactured by way of the method.
  • Specific applications of the method are rolls surfaced with a ceramic/cermet or polymer coating. Further objects of the invention relate to ceram coated dewatering blades and doctor blades, among others.
  • rolls with ceramic and cermet coatings have by large replaced granite rolls used earlier in the art.
  • a roll with a ceramic or cermet coating corrosion of various degrees occurs, particularly under harsh conditions causing corroding of the roll, delamination of the coating and thus the roll gradually wears unusable, further occurs mechanical wear and damage due to different reasons.
  • a roll coating made by way of thermal spraying unavoidably always remains somewhat porous, thus allowing moisture penetration through the porous surface toward the inner metallic layers of the roll thus causing corrosion.
  • Process conditions in the paper and board industry have continually become more and more severe and demanding on the equipment, among other reasons, due to the trend toward enhanced circulation of process water for environmental protection and change of process environment in a more corrosive direction.
  • a technique for sealing a ceramic coating by means of an inorganic solution, in which technique, in order to reduce the porosity of the ceramic layer, an inorganic compound is applied to the surface of the roll after surfacing the same.
  • an inorganic compound is applied to the surface of the roll after surfacing the same.
  • a roll for a paper machine having a synthetic resin or wax applied to the ceramic coating in order to seal its pores, wherein conventional heat-curable epoxy resins are mentioned as suitable synthetic resins. Damage caused by mechanical stresses and wear are repaired most typically with the help of a heat-curable epoxy resin, whereby the paper machine must be shut down for at least 1 to 3 days in order to allow the repaired or sealed area dry sufficiently.
  • the object of the present invention is to provide a method for sealing surfaces subject to wear, particularly those of a roll in a paper or board machine such as a press roll or calender roll or ceramic-surfaced dewatering blades, and for repairing surface damage in the same and, further, to disclose the use of a UN curable sealing agent in the sealing and repair of surfaces subject to wear, particularly those of a roll in a paper or board machine, and components made by virtue of said method for a paper machine.
  • Suitable synthetic polymer resins curable by radiation are epoxy acrylates, polyester acrylates, urethane acrylates, silicone acrylates, polyether acrylates and acrylate esters and mixtures thereof having a reactive thinner, a photoinitiator and a secondary curing catalyst added thereto.
  • Advantageous polymer resins curable by radiation are urethane acrylates and acrylate esters.
  • Polymers suitable for use as sealing compounds are characterized by both a primary UV-catalyzed curing mechanism and a secondary heat-supported catalytic curing mechanism or, alternatively, an anaerobic curing mechanism that needs the absence of oxygen.
  • An organic polymer resin may also be blended with thixotropic agents and fillers.
  • Suitable thixotropic agents are hydrophobic or hydrophilic compounds such as silicon dioxide, whereby the particle size of the thixotropic agent is advantageously in the range of 10 - 2000 nm.
  • Suitable filler materials are silicon dioxide, ceramic fillers such as aluminium oxide and chromium oxide, metals, polymeric filler particles and fibers.
  • the filler is advantageously in the form of a pulverized or microspherical or fibrous material and, advantageously, composed of the same material as that used in the original coating of the surface to be sealed or repaired.
  • the particle size of the filler material is advantageously in the range of 2 - 45 ⁇ m. Sealing a surface does not necessarily require the use of a filler or thixotropic agent.
  • the repair of worn or damaged areas is advantageously made using a composition comprising not more than 75 vol.-% of a filler, not more than 10 vol.-% and, advantageously, 1 - 5 % of a thixotropic agent such as silicon dioxide, and not less than 15 vol.-% and advantageously 50 - 95 vol-% of an organic polymer such as urethane acrylate or acrylate ester.
  • a composition comprising not more than 75 vol.-% of a filler, not more than 10 vol.-% and, advantageously, 1 - 5 % of a thixotropic agent such as silicon dioxide, and not less than 15 vol.-% and advantageously 50 - 95 vol-% of an organic polymer such as urethane acrylate or acrylate ester.
  • the sealing or repair agent is applied to the desired surface area by spreading, dipping, spraying or using some other mechanical means depending on the point of use.
  • the filler may also be applied to the roll surface separately after the radiation-curable organic polymer is first applied thereto, whereby the filler covering the roll surface can improve the wear resistance of the surface.
  • the sealing or repair agent is cured on a porous coating by means of electromagnetic radiation, advantageously using UV light emitted by conventional UV lamps at a suitable wavelength, whereby the radiation intensity maxima advantageously fall at wavelength bands about 270 nm and 365 nm.
  • the maxima of radiation intensity needed are determined by the type of photoinitiator used.
  • the electromagnetic radiation is imposed at an intensity of 1 W/cm 2 - 100,000 W/cm 2 and the power output of the UV lamp is advantageously in the range of 1 - 10,000 W/cm 2 .
  • the radiation is allowed to irradiate the desired surface from 0.1 s to 10 h when the surface is to be repaired or sealed.
  • the curing time is less than one hour and most typically 5 to 10 minutes. Curing can be carried out either by irradiating the surface only once after the entire amount of the sealing or repair agent has been applied or, alternatively, by alternate steps of applying a layer of the sealing or repair agent at the desired area, curing the same and then applying a new layer and curing the same again.
  • the surface to be treated is pure from metal ions, it is advantageous to pretreat the surface with a solution containing metal ions, advantageously using copper chloride solution in which the copper chloride is dissolved in an organic solvent such as hexane, whereby the applied copper ions act as activator.
  • a solution containing metal ions advantageously using copper chloride solution in which the copper chloride is dissolved in an organic solvent such as hexane, whereby the applied copper ions act as activator.
  • an activator is particularly advantageous in the case that the application area is totally free from metal ions or the compound contains a lot of filler that hinders the penetration of UV light through the material.
  • the sealing and repair method according to the invention can be exploited in paper and board machines on their rolls, dewatering blades, doctor blades, ceram-coated blades and, generally, on wear-resistant surfaces coming into contact with a paper web or pulp.
  • the invention is used on rolls having a ceramic or cermet coating.
  • the invention is also applicable to polymer-coated rolls, especially for repairing local damages of their outer coverings.
  • the technique according to the invention can be utilized for improving the corrosion resistance of the combination of a surface coating and underlayer and the mechanical qualities of the coating.
  • the UV-curable sealing agent excels particularly by its low curing temperature, fast curing to a high degree of cross-linking, low exothermic heat release during curing, small curing shrinkage, low viscosity at room temperature, low surface tension and low partial vapour pressure at room temperature.
  • the speed of the method is a particular advantage, because the repair can be carried out rapidly and without dismounting a roll from the machine, thus achieving significant savings through lower shutdown costs.

Abstract

The invention relates to a method for repairing local damage and/or for sealing the porosity of wearing surfaces expected to exhibit a good wear resistance in a pulp, paper, board or finishing machine, said surfaces being in contact with a paper web or pulp or a moving fabric. The invention also concerns a coated component for a pulp, paper or board machine or a finisching machine, said component being in contact with a paper web or pulp during the process. According to the method, said surface is coated with a sealing agent containing a synthetic polymer which is curable by means of electromagnetic radiation, whereupon the polymer is cured with the help of a source of radiation.

Description

Method for sealing of a wearing face
The invention relates to a method for sealing a wearing surface in a pulp/paper/ board/finishing machine and/or for repairing damage in such a surface, as well as to the use of a UV curable sealing agent for sealing and/or for repairing wearing surfaces and, further, to articles manufactured by way of the method. Specific applications of the method are rolls surfaced with a ceramic/cermet or polymer coating. Further objects of the invention relate to ceram coated dewatering blades and doctor blades, among others.
In a paper and board machine, rolls with ceramic and cermet coatings have by large replaced granite rolls used earlier in the art. With a roll with a ceramic or cermet coating, corrosion of various degrees occurs, particularly under harsh conditions causing corroding of the roll, delamination of the coating and thus the roll gradually wears unusable, further occurs mechanical wear and damage due to different reasons. A roll coating made by way of thermal spraying unavoidably always remains somewhat porous, thus allowing moisture penetration through the porous surface toward the inner metallic layers of the roll thus causing corrosion. Process conditions in the paper and board industry have continually become more and more severe and demanding on the equipment, among other reasons, due to the trend toward enhanced circulation of process water for environmental protection and change of process environment in a more corrosive direction.
Various methods have been attempted to improve the corrosion resistance of rolls. As examples of these, reference can be made to FI Patent Nos. 86,566, 82,094 and 84,506 teaching the improvement of corrosion resistance in rolls by way of adding metal or cermet layers between the ceramic/cermet roll surface coating and the roll mantle. From FI Patent Application No. 971,541 is known the application of an impervious intermediary layer deposited by high-speed flame spraying under a porous ceramic surface coating. Attempts have also been made to seal the outer surface of ceramic coatings. In WO publication No. 97/15719, a technique is disclosed for sealing a ceramic coating by means of an inorganic solution, in which technique, in order to reduce the porosity of the ceramic layer, an inorganic compound is applied to the surface of the roll after surfacing the same. In EP Patent Application No. 0,481,321, a roll for a paper machine is described having a synthetic resin or wax applied to the ceramic coating in order to seal its pores, wherein conventional heat-curable epoxy resins are mentioned as suitable synthetic resins. Damage caused by mechanical stresses and wear are repaired most typically with the help of a heat-curable epoxy resin, whereby the paper machine must be shut down for at least 1 to 3 days in order to allow the repaired or sealed area dry sufficiently. Attempts have been made to speed up the curing process by infrared radiation, but nevertheless the method still is slow. It is obvious from the above-discussed background that there is an imminent need for finding a quick and easy-to-use technique for sealing the surfaces of rolls used in a paper and board machine and for repairing damage and wear occurring in the same.
The object of the present invention is to provide a method for sealing surfaces subject to wear, particularly those of a roll in a paper or board machine such as a press roll or calender roll or ceramic-surfaced dewatering blades, and for repairing surface damage in the same and, further, to disclose the use of a UN curable sealing agent in the sealing and repair of surfaces subject to wear, particularly those of a roll in a paper or board machine, and components made by virtue of said method for a paper machine.
The method, use and components according to the invention are characterized by what is stated in the claims.
The shortcomings of conventional methods known in the art for sealing and repairing of surface coatings in paper or board machines can be avoided or decisively reduced by virtue of the method described in the following. It has now been found that sealing and repair of rolls can be made faster and easier than in the prior art by means of using a sealing and repair agent that is curable by electromagnetic radiation. In the method according to the invention, wearing surfaces that are in contact with a paper web and/or pulp and/or a moving fabric are treated by applying on the surface to be treated a synthetic polymer compound curable by electromagnetic radiation, advantageously UV radiation.
Suitable synthetic polymer resins curable by radiation are epoxy acrylates, polyester acrylates, urethane acrylates, silicone acrylates, polyether acrylates and acrylate esters and mixtures thereof having a reactive thinner, a photoinitiator and a secondary curing catalyst added thereto. Advantageous polymer resins curable by radiation are urethane acrylates and acrylate esters. When a polymer resin such as urethane acrylate is cured using UV light, an exothermic reaction is triggered in which the primary curing is launched by the UV light but the hardening process is continued as a secondary, heat-supported curing reaction taking place via a catalytic or anaerobic curing mechanism that secures curing deeper at the bottom of the pores. Polymers suitable for use as sealing compounds are characterized by both a primary UV-catalyzed curing mechanism and a secondary heat-supported catalytic curing mechanism or, alternatively, an anaerobic curing mechanism that needs the absence of oxygen. An organic polymer resin may also be blended with thixotropic agents and fillers. Suitable thixotropic agents are hydrophobic or hydrophilic compounds such as silicon dioxide, whereby the particle size of the thixotropic agent is advantageously in the range of 10 - 2000 nm. Suitable filler materials are silicon dioxide, ceramic fillers such as aluminium oxide and chromium oxide, metals, polymeric filler particles and fibers. The filler is advantageously in the form of a pulverized or microspherical or fibrous material and, advantageously, composed of the same material as that used in the original coating of the surface to be sealed or repaired. The particle size of the filler material is advantageously in the range of 2 - 45 μm. Sealing a surface does not necessarily require the use of a filler or thixotropic agent. The repair of worn or damaged areas is advantageously made using a composition comprising not more than 75 vol.-% of a filler, not more than 10 vol.-% and, advantageously, 1 - 5 % of a thixotropic agent such as silicon dioxide, and not less than 15 vol.-% and advantageously 50 - 95 vol-% of an organic polymer such as urethane acrylate or acrylate ester.
The sealing or repair agent is applied to the desired surface area by spreading, dipping, spraying or using some other mechanical means depending on the point of use. When the surface of a roll is being sealed, the filler may also be applied to the roll surface separately after the radiation-curable organic polymer is first applied thereto, whereby the filler covering the roll surface can improve the wear resistance of the surface. The sealing or repair agent is cured on a porous coating by means of electromagnetic radiation, advantageously using UV light emitted by conventional UV lamps at a suitable wavelength, whereby the radiation intensity maxima advantageously fall at wavelength bands about 270 nm and 365 nm. The maxima of radiation intensity needed are determined by the type of photoinitiator used. The electromagnetic radiation is imposed at an intensity of 1 W/cm2 - 100,000 W/cm2 and the power output of the UV lamp is advantageously in the range of 1 - 10,000 W/cm2. The radiation is allowed to irradiate the desired surface from 0.1 s to 10 h when the surface is to be repaired or sealed. Typically, the curing time is less than one hour and most typically 5 to 10 minutes. Curing can be carried out either by irradiating the surface only once after the entire amount of the sealing or repair agent has been applied or, alternatively, by alternate steps of applying a layer of the sealing or repair agent at the desired area, curing the same and then applying a new layer and curing the same again.
If the surface to be treated is pure from metal ions, it is advantageous to pretreat the surface with a solution containing metal ions, advantageously using copper chloride solution in which the copper chloride is dissolved in an organic solvent such as hexane, whereby the applied copper ions act as activator. The use of an activator is particularly advantageous in the case that the application area is totally free from metal ions or the compound contains a lot of filler that hinders the penetration of UV light through the material.
The sealing and repair method according to the invention can be exploited in paper and board machines on their rolls, dewatering blades, doctor blades, ceram-coated blades and, generally, on wear-resistant surfaces coming into contact with a paper web or pulp. Advantageously, the invention is used on rolls having a ceramic or cermet coating. The invention is also applicable to polymer-coated rolls, especially for repairing local damages of their outer coverings. The technique according to the invention can be utilized for improving the corrosion resistance of the combination of a surface coating and underlayer and the mechanical qualities of the coating. As compared to heat-catalyzed sealing materials such as conventional epoxy sealant systems, the UV-curable sealing agent excels particularly by its low curing temperature, fast curing to a high degree of cross-linking, low exothermic heat release during curing, small curing shrinkage, low viscosity at room temperature, low surface tension and low partial vapour pressure at room temperature.
By virtue of the method according to the invention, it is possible to produce quickly on a desired surface, such as that of a roll, a protective surface layer of good corrosion resistance and to seal the pores of a surface, especially those of a ceramic surface, in an efficient way. Simultaneously, it is possible to affect the surface qualities of a roll by way of selecting a suitable polymer and, optionally, a suitable filler.
In conjunction with rolls and dewatering blades, a particular benefit is that entire workpiece need not be taken to an elevated temperature, which generally is awkward to arrange and costly.
In repair operations, the speed of the method is a particular advantage, because the repair can be carried out rapidly and without dismounting a roll from the machine, thus achieving significant savings through lower shutdown costs.

Claims

Claims
1. Method for repairing local damage and/or for sealing the porosity of wearing surfaces requiring a good wearability in a pulp, paper, board or finishing machine, said surfaces being in contact with a paper web or pulp or a moving fabric, characterized in that said surface is coated with a sealing agent containing a synthetic polymer which is curable by means of electromagnetic radiation, whereupon the polymer is cured with the help of a source of radiation.
2. Method according to claim 1, characterized in that the synthetic polymer comprises epoxy acrylates, polyester acrylates, urethane acrylates, silicone acrylates, polyether acrylates and acrylate esters and mixtures thereof.
3. Method according to claim 1 or 2, characterized in that a reactive thinner, a photoinitiator and a secondary curing catalyst are added into said synthetic polymer.
4. Method according to any one of claims 1 - 3, characterized in that said synthetic polymer is blended with a filler material, advantageously silicon dioxide, a ceramic, metallic or polymeric filler material and/or fiber, wherein the particle size of the filler material is in the range of 2 - 45 μm.
5. Method according to any one of claims 1 - 4, characterized in that said polymer is blended with a hydrophobic or hydrophilic thixotropic agent having the particle size in the range of 10 - 2000 nm.
6. Method according to any one of claims 1 - 5, characterized in that said sealing agent contains synthetic polymer not less than 15 vol.-%, filler material not more than 75 vol.-% and thixotropic agent not more than 10 vol.-%.
7. Method according to any one of claims 1 - 6, characterized in that said sealing agent is cured with the help of electromagnetic radiation applied at an intensity in the range of 1 W/cm2 - 100,000 W/cm2.
8. Method according to any one of claims 1 - 7, characterized in that said electromagnetic radiation is UV light with the radiation intensity maxima falling at wavelength bands 270 nm and 365 nm and the power output of the UV lamp being in the range of 1 - 10,000 W/cm2.
9. Use of a sealing agent curable with the help of electromagnetic radiation for repairing local damage and/or for sealing the porosity of wear-resistant surfaces in a pulp, paper, board or finishing machine, said surfaces being in contact with a paper web or pulp, characterized in that said sealing agent contains a synthetic polymer, advantageously epoxy acrylates, polyester acrylates, urethane acrylates, silicone acrylates, polyether acrylates and acrylate ester, whereby the base polymers have a reactive thinner, a photoinitiator and a secondary curing catalyst added thereto.
10. Use according to claim 9, characterized in that said sealing agent additionally contains a hydrophobic or hydrophilic thixotropic agent having the particle size in the range of 10 - 2000 nm.
11. Use according to claim 9 or 10, characterized in that said synthetic polymer is blended with a filler material, advantageously silicon dioxide, ceramic, metallic or polymeric filler materials or fiber having the particle size in the range of 2 - 45 μm.
12. Coated component for a cellulosic paper or board or finishing machine, said component being in contact with a paper web or pulp during the process, characterized in that said component is a roll with a ceramic or cermet coating having its coating sealed using any one of the methods of claims 1 - 8.
13. Component according to claim 12, characterized in that said component is a roll with a ceramic or cermet or polymeric coating whose surface damage has been repaired using any one of the methods of claims 1 - 8.
14. Component according to claim 12, characterized in that said component is a dewatering blade with a ceramic or cermet surface coating.
15. Component according to claim 12, characterized in that said component is a doctor blade with a ceramic or cermet surface coating.
PCT/FI2000/000110 1999-02-15 2000-02-15 Method for sealing of a wearing face WO2000048747A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU26740/00A AU2674000A (en) 1999-02-15 2000-02-15 Method for sealing of a wearing face

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990299A FI105351B (en) 1999-02-15 1999-02-15 Method for sealing the wear surface
FI990299 1999-02-15

Publications (1)

Publication Number Publication Date
WO2000048747A1 true WO2000048747A1 (en) 2000-08-24

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Application Number Title Priority Date Filing Date
PCT/FI2000/000110 WO2000048747A1 (en) 1999-02-15 2000-02-15 Method for sealing of a wearing face

Country Status (3)

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AU (1) AU2674000A (en)
FI (1) FI105351B (en)
WO (1) WO2000048747A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054574A1 (en) * 2003-11-20 2005-06-16 Btg Eclepens S.A. Materials for dewatering elements
EP1754825A1 (en) 2005-08-16 2007-02-21 Voith Patent GmbH Doctor assembly for a paper machine
EP1990469A1 (en) * 2006-02-27 2008-11-12 Yamauchi Corporation Ceramic-resin composite roll and method for producing same
CN1948614B (en) * 2006-10-31 2011-04-20 山东泉林纸业有限责任公司 Repairing method of artificial stone roller surface
US8673095B2 (en) 2011-06-17 2014-03-18 Daniel Dagenais System and method for repairing a screen for use in the paper mill industry
EP2729615B1 (en) 2011-07-06 2015-05-20 Voith Patent GmbH Dirt-repellent cleaning scraper
EP1776503B1 (en) 2004-06-14 2018-02-21 Kadant Inc. Planar elements for use in papermaking machines
CN110983332A (en) * 2019-12-27 2020-04-10 暴溢华 Manufacturing process of composite metal ceramic super-wear-resistant material distribution roller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728530A (en) * 1986-01-10 1988-03-01 Hermann Wangner Gmbh & Co. Kg Method for mending damaged areas in papermachine fabrics
EP0257812A2 (en) * 1986-08-05 1988-03-02 The Standard Oil Company Nitrile acrylate coating composition containing pendant functionality and a radiation curable process
US5004357A (en) * 1985-09-27 1991-04-02 Pelt & Hooykas B.V. Bearing part for a gas bearing
US5629052A (en) * 1995-02-15 1997-05-13 The Procter & Gamble Company Method of applying a curable resin to a substrate for use in papermaking
US5851598A (en) * 1995-10-04 1998-12-22 Mount Hope Machinery Company Method for applying a release coating to a roll

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004357A (en) * 1985-09-27 1991-04-02 Pelt & Hooykas B.V. Bearing part for a gas bearing
US4728530A (en) * 1986-01-10 1988-03-01 Hermann Wangner Gmbh & Co. Kg Method for mending damaged areas in papermachine fabrics
EP0257812A2 (en) * 1986-08-05 1988-03-02 The Standard Oil Company Nitrile acrylate coating composition containing pendant functionality and a radiation curable process
US5629052A (en) * 1995-02-15 1997-05-13 The Procter & Gamble Company Method of applying a curable resin to a substrate for use in papermaking
US5851598A (en) * 1995-10-04 1998-12-22 Mount Hope Machinery Company Method for applying a release coating to a roll

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054574A1 (en) * 2003-11-20 2005-06-16 Btg Eclepens S.A. Materials for dewatering elements
US7513976B2 (en) 2003-11-20 2009-04-07 Btg Eclepens, S.A. Materials for dewatering elements
KR101120473B1 (en) 2003-11-20 2012-02-29 비티지 에클레펜 엣스.에이. Materials for dewatering elements
EP1776503B1 (en) 2004-06-14 2018-02-21 Kadant Inc. Planar elements for use in papermaking machines
EP1754825A1 (en) 2005-08-16 2007-02-21 Voith Patent GmbH Doctor assembly for a paper machine
EP1990469A1 (en) * 2006-02-27 2008-11-12 Yamauchi Corporation Ceramic-resin composite roll and method for producing same
EP1990469A4 (en) * 2006-02-27 2009-03-25 Yamauchi Corp Ceramic-resin composite roll and method for producing same
CN1948614B (en) * 2006-10-31 2011-04-20 山东泉林纸业有限责任公司 Repairing method of artificial stone roller surface
US8673095B2 (en) 2011-06-17 2014-03-18 Daniel Dagenais System and method for repairing a screen for use in the paper mill industry
EP2729615B1 (en) 2011-07-06 2015-05-20 Voith Patent GmbH Dirt-repellent cleaning scraper
CN110983332A (en) * 2019-12-27 2020-04-10 暴溢华 Manufacturing process of composite metal ceramic super-wear-resistant material distribution roller

Also Published As

Publication number Publication date
FI105351B (en) 2000-07-31
AU2674000A (en) 2000-09-04
FI990299A0 (en) 1999-02-15

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