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WO2000028142A1 - Lame de couchage - Google Patents

Lame de couchage Download PDF

Info

Publication number
WO2000028142A1
WO2000028142A1 PCT/FI1999/000922 FI9900922W WO0028142A1 WO 2000028142 A1 WO2000028142 A1 WO 2000028142A1 FI 9900922 W FI9900922 W FI 9900922W WO 0028142 A1 WO0028142 A1 WO 0028142A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
bar
onto
prepared
wear
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.)
Ceased
Application number
PCT/FI1999/000922
Other languages
English (en)
Other versions
WO2000028142A8 (fr
Inventor
Timo Lintula
Ilkka Rata
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
Valmet Oy
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 Oy, Valmet Oy filed Critical Metso Paper Oy
Priority to AU12735/00A priority Critical patent/AU1273500A/en
Priority to DE29980220U priority patent/DE29980220U1/de
Publication of WO2000028142A1 publication Critical patent/WO2000028142A1/fr
Publication of WO2000028142A8 publication Critical patent/WO2000028142A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod

Definitions

  • the invention concerns a coating bar for a bar coater used in coating of paper or board and in particular a coating bar suited for surface-sizing, pigmenting, and film coating.
  • Bar coaters are used for coating of paper, board, or of a moving base with the desired coating agent, which coater comprises a revolving coating bar, which rests against the moving base, which extends across the machine width, which has been supported in a cradle substantially over its entire length, and which coating bar has been fitted to spread and to smooth a coating agent on the moving base, which coating agent has been introduced into the coating device before the coating bar, as viewed in the running direction of the moving base.
  • the material of the coating bars is often steel, which has been coated with a chromium plating in order to increase its service life.
  • the face of a bar used in surface-sizing is provided either with grooves, or onto the bar a steel wire has been wound, which forms a solution similar to grooves on the face of the bar.
  • the depth of the grooves it is possible to determine the thickness of the size film to be applied to the base to be coated in surface sizing.
  • it is a problem of grooved bars that they are worn very rapidly, and pigmenting has proved uneconomical with these bars, because the dry solids content of the paste used for pigmenting is high, and it results in excessive wear of the bars.
  • Metal bars and in particular steel bars are worn very intensively in pigmenting, for which reason materials to be substituted for metal have started being looked for.
  • a large-diameter, grooved, and favourably tubular coating bar is described, whose diameter is at least 18 mm and whose material is chromium- plated copper, steel or equivalent.
  • a doctor bar is described, which is meant in particular for metering of coating pastes onto moving webs consisting of paper or board or onto rubber coatings on rolls and which doctor bar consists, at least in the area of the doctor face or metering face, of acrylic glass fibres or carbon fibres or of glass-reinforced or carbon-reinforced plastic fibres, or the whole of the doctor bar can be made of acrylic glass.
  • the core of the bar can consist of metal, epoxy resin and carbon fibres, of a sintered material or plastic, and a glass coating layer has been applied onto the core part of the bar.
  • One of the problems in such a bar is poor resistance to wear; when the matrix is worn, the fibre is separated from the face, and it is difficult to obtain an adequate surface quality.
  • the object of the present invention is a coating bar whose construction is of lower weight than the prior-art bars, which is easy to machine in compliance with the application of use, which is advantageous to manufacture, and which has excellent resistance to wear and corrosion.
  • a further object of the present invention is to provide a solution by whose means the drawbacks involved in the prior art are avoided and by whose means a considerable improvement is achieved in particular in coating bars suitable for surface-sizing, pigmenting and film coating.
  • Figure 1 Axial sectional view and cross-sectional view of coating bar.
  • Figure 2 Axial sectional view and cross-sectional view of a hollow coating bar.
  • Figure 3 Axial sectional view and cross-sectional view of a grooved coating bar.
  • Figure 4 Axial sectional view and cross-sectional view of a metal-faced coating bar.
  • Fig. 1 is an axial sectional view of a coating bar 1 in accordance with the invention and a cross-sectional view of the body of the bar.
  • the bar comprises a solid, fibre- reinforced plastic composite body 11, onto whose face 12 a durable coating has been applied electrolytically, auto-catalytically, or by means of thermal spraying.
  • Fig. 2 is a similar illustration of a fibre-reinforced plastic composite coating bar 1, whose construction comprises a hollow tube.
  • a durable face 12 has been prepared electrolytically, auto- catalytically, or by means of thermal spraying.
  • Fig. 3 illustrates a coating bar 1, which is provided with a fibre-reinforced plastic composite body 11, which body can be either solid or hollow, and onto which body 11 grooves 13 have been prepared by means of a carbon- fibre, fibreglass or metal profile band and in which the band windings have been interlocked with each other optionally by means of shaped projections 14.
  • Fig. 4 illustrates a fibre-reinforced coating bar 1 with a plastic composite body, which bar can be either hollow or solid and in which bar a smooth metallic face is accomplished by means of a metal band or net or wire 15 to be wound and glued onto the composite body 11.
  • the basic material, i.e. the core, of the coating bar comprises a fibre-reinforced composite body, which is manufactured appropriately by means of a pultrusion, extrusion, or filament-winding method.
  • the bar can be either solid or hollow; advantages of a hollow bar include lower weight, resilience, and favourable cost.
  • Suitable fibres are glass fibres, carbon fibres, boron fibres, aramide fibres, and synthetic fibres or combinations of same; favourable fibres are carbon fibres and glass fibres or their combinations so that the necessary torsional strength is achieved.
  • As a matrix in a composite material it is possible to use conventional thermosetting plastics, epoxy, vinylester and polyester resins, and most advantageously polyester and epoxy resins.
  • the anchor structure can be placed on the face of the composite material, partly in the composite structure, or as fully sub- merged in the composite structure very close to the surface.
  • the anchor structure is prepared so that onto the composite face or to among the face, a metal wire, metal fillet, metal net, metal foil, metal powder, metal-plastic composites, plastic-ceramic powder is/are fixed, or onto the composite bar a metal sleeve is prepared which permits adhesion of a ceramic onto the face of the composite or, if the anchor structure is placed below the surface, to under the surface.
  • a wear-resistant face is prepared electrolytically, auto-catalytically, by means of thermal spraying, or by means of physical vapour deposition (PVD).
  • Suitable coating materials include hard chromium, chemical nickel, aluminium oxide, chromium oxide, titanium oxide, zirconium oxide, or combinations of same, titanium nitride, titanium carbonitride, titanium aluminonitride, molybdenum sulphide, diamond-like coating, combinations of same, and multi-layer coatings.
  • a ceramic coating can be applied onto the face of a composite by means of thermal spraying at a temperature lower than 150°C, in which case the polymer matrix of the composite does not melt to a substantial extent or is not otherwise damaged.
  • the construction of a coating bar in accordance with the present invention is of very low weight, and it is easy to handle.
  • the coating bar can be profiled readily, the longitudinal modulus of the base bar can be regulated by means of orientation and quantity of the reinforcement fibres, and likewise it is possible to regulate the coefficient of thermal expansion of the base bar.
  • the cost of a bar in accordance with the invention is also favourable, its resistance to wear and corrosion is good, and the materials needed for manufacture are readily available. With a high dimen- sional and balancing precision, it is possible to manufacture bars of different diameters.

Landscapes

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

Abstract

L'invention concerne une lame de couchage destinée à une coucheuse à lames et utile dans le couchage de papier ou de carton, et elle concerne notamment une lame de couchage conçue pour l'encollage de surface, la pigmentation et le revêtement de couche mince, de même qu'un procédé de fabrication de cette lame. Cette lame comprend un corps composite renforcé par des fibres, sur la face duquel on a préparé une face résistant à l'usure, de manière électrolytique, auto-catalytique, par vaporisation thermique, ou par dépôt physique en phase vapeur.
PCT/FI1999/000922 1998-11-09 1999-11-05 Lame de couchage Ceased WO2000028142A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU12735/00A AU1273500A (en) 1998-11-09 1999-11-05 Coating bar
DE29980220U DE29980220U1 (de) 1998-11-09 1999-11-05 Beschichtungsstab

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI982424 1998-11-09
FI982424A FI104103B1 (fi) 1998-11-09 1998-11-09 Päällystyssauva

Publications (2)

Publication Number Publication Date
WO2000028142A1 true WO2000028142A1 (fr) 2000-05-18
WO2000028142A8 WO2000028142A8 (fr) 2000-11-30

Family

ID=8552874

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/000922 Ceased WO2000028142A1 (fr) 1998-11-09 1999-11-05 Lame de couchage

Country Status (4)

Country Link
AU (1) AU1273500A (fr)
DE (1) DE29980220U1 (fr)
FI (1) FI104103B1 (fr)
WO (1) WO2000028142A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002027097A1 (fr) * 2000-09-29 2002-04-04 Metso Paper, Inc. Latte de soutien pour dispositif racleur
EP1334778A3 (fr) * 2002-02-08 2006-06-28 Fuji Photo Film Co., Ltd. Tige pour dipositif de revêtement ainsi que son procédé de fabrication
US7134381B2 (en) 2003-08-21 2006-11-14 Nissan Motor Co., Ltd. Refrigerant compressor and friction control process therefor
US7146956B2 (en) 2003-08-08 2006-12-12 Nissan Motor Co., Ltd. Valve train for internal combustion engine
US7228786B2 (en) 2003-06-06 2007-06-12 Nissan Motor Co., Ltd. Engine piston-pin sliding structure
US7255083B2 (en) 2002-10-16 2007-08-14 Nissan Motor Co., Ltd. Sliding structure for automotive engine
US7273655B2 (en) 1999-04-09 2007-09-25 Shojiro Miyake Slidably movable member and method of producing same
US7284525B2 (en) 2003-08-13 2007-10-23 Nissan Motor Co., Ltd. Structure for connecting piston to crankshaft
US7318514B2 (en) 2003-08-22 2008-01-15 Nissan Motor Co., Ltd. Low-friction sliding member in transmission, and transmission oil therefor
US7322749B2 (en) 2002-11-06 2008-01-29 Nissan Motor Co., Ltd. Low-friction sliding mechanism
US7406940B2 (en) 2003-05-23 2008-08-05 Nissan Motor Co., Ltd. Piston for internal combustion engine
US7458585B2 (en) 2003-08-08 2008-12-02 Nissan Motor Co., Ltd. Sliding member and production process thereof
US7500472B2 (en) 2003-04-15 2009-03-10 Nissan Motor Co., Ltd. Fuel injection valve
US7572200B2 (en) 2003-08-13 2009-08-11 Nissan Motor Co., Ltd. Chain drive system
EP1989002A4 (fr) * 2006-03-01 2009-11-18 Fujifilm Corp Appareil d'application de revetement
US7771821B2 (en) 2003-08-21 2010-08-10 Nissan Motor Co., Ltd. Low-friction sliding member and low-friction sliding mechanism using same
WO2010112388A1 (fr) * 2009-03-31 2010-10-07 Voith Patent Gmbh Dispositif d'égalisation
US8096205B2 (en) 2003-07-31 2012-01-17 Nissan Motor Co., Ltd. Gear

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055187B4 (de) 2011-11-09 2018-09-20 V.I.T. Paptertec AG Rakelwelle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005698A1 (fr) * 1987-02-07 1988-08-11 Jagenberg Aktiengesellschaft Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande
DE4137970A1 (de) * 1991-11-19 1993-05-27 Feldmuehle Ag Stora Verwendung eines faserverstaerkten kunststoffes fuer ein stab- oder blattfoermiges rakel
US5264247A (en) * 1990-09-14 1993-11-23 Valmet Paper Machinery Inc. Process for the manufacture of a coating bar for a bar coater
EP0571351A1 (fr) * 1992-05-21 1993-11-24 Valmet Paper Machinery Inc. Dispositif d'enduction pour l'enduction d'un rouleau de presse d'encollage, papier ou carton
WO1994000637A1 (fr) * 1992-06-24 1994-01-06 J.M. Voith Gmbh Barre de raclage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005698A1 (fr) * 1987-02-07 1988-08-11 Jagenberg Aktiengesellschaft Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande
US5264247A (en) * 1990-09-14 1993-11-23 Valmet Paper Machinery Inc. Process for the manufacture of a coating bar for a bar coater
DE4137970A1 (de) * 1991-11-19 1993-05-27 Feldmuehle Ag Stora Verwendung eines faserverstaerkten kunststoffes fuer ein stab- oder blattfoermiges rakel
EP0571351A1 (fr) * 1992-05-21 1993-11-24 Valmet Paper Machinery Inc. Dispositif d'enduction pour l'enduction d'un rouleau de presse d'encollage, papier ou carton
WO1994000637A1 (fr) * 1992-06-24 1994-01-06 J.M. Voith Gmbh Barre de raclage

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7273655B2 (en) 1999-04-09 2007-09-25 Shojiro Miyake Slidably movable member and method of producing same
US6758904B2 (en) 2000-09-29 2004-07-06 Metso Paper, Inc. Backing lath for a doctor device
WO2002027097A1 (fr) * 2000-09-29 2002-04-04 Metso Paper, Inc. Latte de soutien pour dispositif racleur
EP1334778A3 (fr) * 2002-02-08 2006-06-28 Fuji Photo Film Co., Ltd. Tige pour dipositif de revêtement ainsi que son procédé de fabrication
US7255083B2 (en) 2002-10-16 2007-08-14 Nissan Motor Co., Ltd. Sliding structure for automotive engine
US7322749B2 (en) 2002-11-06 2008-01-29 Nissan Motor Co., Ltd. Low-friction sliding mechanism
US8152377B2 (en) 2002-11-06 2012-04-10 Nissan Motor Co., Ltd. Low-friction sliding mechanism
US7500472B2 (en) 2003-04-15 2009-03-10 Nissan Motor Co., Ltd. Fuel injection valve
US7406940B2 (en) 2003-05-23 2008-08-05 Nissan Motor Co., Ltd. Piston for internal combustion engine
US7228786B2 (en) 2003-06-06 2007-06-12 Nissan Motor Co., Ltd. Engine piston-pin sliding structure
US8096205B2 (en) 2003-07-31 2012-01-17 Nissan Motor Co., Ltd. Gear
US7458585B2 (en) 2003-08-08 2008-12-02 Nissan Motor Co., Ltd. Sliding member and production process thereof
US7146956B2 (en) 2003-08-08 2006-12-12 Nissan Motor Co., Ltd. Valve train for internal combustion engine
US7284525B2 (en) 2003-08-13 2007-10-23 Nissan Motor Co., Ltd. Structure for connecting piston to crankshaft
US7572200B2 (en) 2003-08-13 2009-08-11 Nissan Motor Co., Ltd. Chain drive system
US7771821B2 (en) 2003-08-21 2010-08-10 Nissan Motor Co., Ltd. Low-friction sliding member and low-friction sliding mechanism using same
US7134381B2 (en) 2003-08-21 2006-11-14 Nissan Motor Co., Ltd. Refrigerant compressor and friction control process therefor
US7318514B2 (en) 2003-08-22 2008-01-15 Nissan Motor Co., Ltd. Low-friction sliding member in transmission, and transmission oil therefor
EP1989002A4 (fr) * 2006-03-01 2009-11-18 Fujifilm Corp Appareil d'application de revetement
WO2010112388A1 (fr) * 2009-03-31 2010-10-07 Voith Patent Gmbh Dispositif d'égalisation

Also Published As

Publication number Publication date
FI104103B (fi) 1999-11-15
WO2000028142A8 (fr) 2000-11-30
FI104103B1 (fi) 1999-11-15
DE29980220U1 (de) 2001-09-27
FI982424A0 (fi) 1998-11-09
FI982424A7 (fi) 1999-11-15
AU1273500A (en) 2000-05-29

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