US20060180291A1 - Composite-construction treatment equipment - Google Patents

Composite-construction treatment equipment Download PDF

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Publication number
US20060180291A1
US20060180291A1 US10/542,074 US54207405A US2006180291A1 US 20060180291 A1 US20060180291 A1 US 20060180291A1 US 54207405 A US54207405 A US 54207405A US 2006180291 A1 US2006180291 A1 US 2006180291A1
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US
United States
Prior art keywords
blade
blade holder
counter
pair
clamps
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.)
Abandoned
Application number
US10/542,074
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English (en)
Inventor
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
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 filed Critical Metso Paper Oy
Assigned to METSO PAPER, INC. reassignment METSO PAPER, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ILKKA, RATA
Publication of US20060180291A1 publication Critical patent/US20060180291A1/en
Assigned to VALMET TECHNOLOGIES, INC. reassignment VALMET TECHNOLOGIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: METSO PAPER, INC.
Abandoned legal-status Critical Current

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Classifications

    • 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
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • 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
    • B05C11/04—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 with blades
    • B05C11/041—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 with blades characterised by means for positioning, loading, or deforming the blades
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • This invention relates to composite-construction treatment equipment, which is designed to be set in connection with a moving surface and which equipment includes
  • blade holders manufactured entirely of a composite material have been in use only for a short period of time.
  • One known blade holder located in a paper machine has an arm section by which the blade holder is attached to a frame formed by a beam. The arm section is extended with a clamp section, which is fitted with a gap for the blade.
  • a composite-construction blade holder is light in weight and durable compared to conventional metal blade holders.
  • the blade holder can also be made more adaptable to the surface for example by orientating the reinforced fibers.
  • the blade holder is rigid in the blade loading direction, i.e. in the machine direction.
  • the composite-construction returns to the original shape even after major deformations.
  • the blade holder is attached to the frame using screws. This requires removing the screws during the installation and change of the blade holder, which takes time and requires working inside the paper machine. In some cases even the whole treatment equipment needs to be removed from the paper machine for installing the blade holder.
  • the holes required by the screws in the arm section create discontinuity points in the blade holder construction reducing thus its durability.
  • the object of this invention is to provide novel composite-construction treatment equipment, which is easier to use and service, yet more versatile than heretofore.
  • the features characterizing this invention become evident from the appended claims.
  • the whole blade holder can be changed in a simple manner. This makes the installation and change of the blade holder quick and easy. Irrespective of the unexpected construction, the blade holder can additionally be provided with loading elements, for example. The blade holder can also be easily retrofitted in existing treatment equipment without major modifications.
  • the design of new treatment equipment can be made simpler than before.
  • the components of the treatment equipment can be changed independent of each other, which allows to precisely adjust the treatment equipment characteristics as desired.
  • FIG. 1 is a side view of the treatment equipment according to the invention arranged in connection with a moving surface.
  • FIG. 2 a is an enlarged view of the blade holder illustrated in FIG. 1 .
  • FIG. 2 b is a cross-sectional view of a modification of the blade holder shown in FIG. 2 a without a blade.
  • FIGS. 3 a , 3 b , 3 c , and 3 d illustrate various applications of the blade holder according to the invention.
  • FIG. 4 a is a cross-sectional view of the blade holder according to the invention equipped with loading elements.
  • FIG. 4 b shows the blade holder of FIG. 4 a only.
  • FIG. 5 a shows another application of the treatment equipment according to the invention.
  • FIG. 5 b shows another application of the blade holder equipped with loading elements.
  • FIG. 1 shows the treatment equipment according to the invention adapted in connection with a moving surface 10 .
  • the moving surface 10 is a paper machine roll 11 , of which only a part is shown.
  • the purpose of the treatment equipment is to treat a moving surface.
  • the purpose of doctoring is to remove impurities from the surface or, for example, the web itself in some paper machine positions.
  • moving surfaces also comprise the surfaces of various cylinders and fabrics.
  • the treatment equipment is used for example for web coating, in which a coating paste is applied to the surface of a moving web. This is illustrated in FIG. 5 a .
  • the treatment equipment comprises a frame 12 , arranged in the vicinity of the surface 10 to be treated. In FIG.
  • the frame 12 is a beam 13 , which is supported by a shaft 14 in a way that allows pivoting in relation to the paper machine construction.
  • the beam is locked in the correct position using turnbuckle screws, for example (not shown).
  • the beam can be pivoted towards the surface by means of loading elements for improving the doctoring result.
  • the treatment equipment also includes a blade holder 15 , which is made of a composite material to form an essentially integral component.
  • the blade holder 15 is correspondingly attached to the frame 12 ( FIG. 1 ).
  • the actual treatment is provided by the blade 16 adapted to the blade holder 15 , the dimensioning and material of which can vary between different applications. In the proposed applications both the doctor blade and the coating blade are described.
  • the blade 16 includes a doctoring edge 17 , shown in FIG. 2A , which is arranged in contact with the moving surface 10 by moving the blade holder 15 . In this way the moving surface is provided with a treatment.
  • FIG. 1 shows a so-called rigid blade holder 15 , in which the movement of the blade holder 15 is created by pivoting the beam 13 .
  • the proposed blade holders 15 also comprise a separate backing blade 18 , which is set in the blade holder 15 by one end.
  • the other end of the backing blade 18 extends closer to the said edge 17 than the blade holder 15 thus supporting the blade 16 .
  • the operation of the backing blade is also described below in greater detail.
  • the blades 16 shown in the figures are new. In a worn blade the edge is to the other direction. On the other hand, a bevel corresponding to a worn blade can in practice be pre-ground to the blade. In FIGS. 1 and 5 a the movement direction of the surface 10 is indicated by the arrow.
  • the blade holder 15 is unexpectedly removably adapted to the frame 12 using a pair of form-locking counter clamps 19 .
  • the form-lock between the counter clamps 20 and 21 is additionally arranged tight in the lateral direction of the blade 16 and essentially free in the longitudinal direction of the blade 16 .
  • This allows moving the blade holder 15 in the longitudinal direction of the blade, i.e. in the cross direction of the machine.
  • the blade holder can be installed simply by pushing from the side and correspondingly, it can be removed by pulling it out.
  • the form-lock is tight in the lateral direction of the blade. This ensures that the blade holder is reliably kept in place in the machine direction.
  • the cross-machine directional mobility can be prevented using a locking pin, for example.
  • this cross-directional mobility can be utilized for oscillation with appropriate material selections. That is, the blade can be moved in relation to the surface by moving the blade holder only. All parts are preferably made of a composite material. Consequently, the scratching effect of metal rivets, for example, can be avoided.
  • the first counter clamp 20 forming the pair of counter clamps 19 is a profiled shoulder.
  • the second counter clamp 21 is adapted to cover the first counter clamp 20 essentially on the opposite sides. In this way the said second counter clamp 21 forms a groove against the first shoulder-like counter clamp 20 .
  • the location of the counter clamps can vary.
  • the counter clamp is preferably arranged in the rear part parallel to the blade holder. In this case the blade is attached to the front part of the blade holder 15 .
  • the front part refers to the blade holder part, which is nearest to the surface to be doctored.
  • FIGS. 1, 2 a and 2 b The first embodiment of the adapter component 22 is illustrated in FIGS. 1, 2 a and 2 b .
  • the adapter component 22 together with the frame 12 , forms the counter clamp 21 for the shoulder-like counter clamp 20 formed in the blade holder 15 .
  • the proposed construction is extremely compact, and the adapter component 22 is easy to attach to the frame 12 .
  • the arm sections of even the known composite-construction blade holders can be modified into shoulder-like counter clamps using suitable machining methods. In practice, however, it is more preferable to bring the blade holder to the final state in connection with the manufacture, thus maintaining an integral blade holder construction.
  • the same reference numbers are used for functionally similar parts.
  • FIGS. 3 a and 3 b The following embodiments of the adapter component 22 are shown in FIGS. 3 a and 3 b .
  • one of the counter clamps 20 or 21 is completely formed in the adapter component 22 .
  • the adapter component 22 can be permanently attached to the frame 12 .
  • the adapter component 22 is provided with a shoulder-like counter clamp 20 while the groove-like counter clamp 21 is located in the blade holder 15 . This ensures that the form-lock is well protected from impurities.
  • the blade holder 15 can be designed advantageously as regards the manufacture.
  • the adapter component 22 also has a curve 23 for compensating the change of the blade position with respect to a conventional blade holder.
  • the blade 16 extends closer to the surface 10 , in which case the blade angle ⁇ of the blade 16 relative to the surface most often changes.
  • the blade angle ⁇ decreases, which usually has a negative effect on the doctoring result.
  • This problem can be avoided by moving the blade holder in the vertical direction, or it can be at least avoided by adjusting the beam and its position.
  • the adapter component provided with a curve can be installed in the frame also the other way round. The straightness and shape of the curve can also vary between different applications.
  • the adapter component when manufacturing new treatment equipment according to the invention, can be excluded. This is possible by arranging one of the counter clamps 20 or 21 forming the pair of counter clamps 19 in the frame 12 . This is shown in the embodiments of FIGS. 3 c and 3 d .
  • the blade holder 15 shown in FIG. 3 d can be made extremely short, which allows its positioning in confined positions.
  • the blade holder according to the invention can also be arranged adjustably.
  • the counter clamps forming the pair of counter clamps are arranged as a mutually functional articulation. In this case it is possible to change the angle between the counter clamps while keeping the locking in the blade's lateral direction unchanged.
  • FIG. 4 a The embodiment of an adjustable, or rather of a loadable blade holder 15 is shown in FIG. 4 a .
  • the principle of this blade holder 15 is corresponding with that of the blade holder 15 shown in FIG. 3 a , except that the counter clamp 21 of the blade holder 15 is made more spacious.
  • loading elements 24 between the counter clamp 20 and the blade holder 15 .
  • the loading elements 24 are placed between the adapter component 22 and the blade holder 15 .
  • FIG. 4 a the blade holder 15 has such provisions on both sides of the adapter component 22 .
  • the upper provision has a loading hose 26 , known as such, and the lower provision has a spring component 27 .
  • FIG. 4 b illustrates both the upper provision 25 and the lower provision 25 ′ in more detail.
  • the treatment equipment in question is so adapted that the spring component 27 tends to turn the blade 16 upwards.
  • the blade 16 can be loaded against the surface by adjusting the pressure in the loading hose 26 .
  • the movement of the blade holder 15 is indicated by the arrow in FIG.
  • FIG. 4 a shows a solution that is particularly advantageous for new treatment equipment according to the invention.
  • only one loading hose is needed for using the blade holder.
  • a blade holder can be selected, in which there are provisions for two loading hoses (not shown).
  • FIG. 5 b shows another embodiment of the loadable blade holder.
  • the blade holder 15 movement is provided by means of the loading hose 26 .
  • the returning force is produced by another loading hose 26 ′ or a spring component 27 .
  • the adapter component 22 extends to both sides of the frame 12 . The fastening is secured with screws.
  • FIG. 3 a illustrates a thick plastic blade
  • FIGS. 3 b - 3 d show thin metal or composite material blades. Due to the blade holder design, thin blades can be fastened using several different methods.
  • FIG. 3 c a conventional rivet 28 is used, whereas in FIG. 3 b a composite blade has been attached using a special adapter 29 .
  • FIG. 3 d there is an extension 30 in the rear part that is larger and different in shape, in which case a separate adapter is not necessary.
  • the blade holder also has a gap 32 , defined, besides the backing blade 18 , by the clamp 33 .
  • the backing blade 18 is similar to the blade 16 .
  • the end of the backing blade 18 which is to be adapted to the blade holder 15 , has a form-lockable detent 34 for fastening the backing blade 18 removably to the blade holder 15 .
  • the backing blade like the blade holder, has a quick clamping system, allowing its replacement.
  • a portion of a front part of the blade holder forming the blade clamp 33 defines the gap 32 for receiving the blade 16 .
  • the front part defines at least one fastening point for the backing blade 18 , the fastening point forming a longitudinally extending groove which has a larger portion for receiving the form-locking detent 34 and a first smaller portion extending in a direction overlying the gap 32 .
  • FIG. 2 b shows an application related to the backing blade 18 .
  • the blade holder 15 has two fastening points 31 for the detent 34 for adjusting the position of the backing blade 18 in the lateral direction of the blade 16 . That is, the blade holder 15 has two alternative fastening points 31 for connecting the backing blade 18 .
  • the groove formed by the fastening point 31 can be used for example for supplying a lubricant to the blade and further to the surface to be treated.
  • the pipe can be easily sealed and the lubricant dosing is accurate.
  • the manufacture of treatment equipment according to the invention is less complicated than heretofore.
  • all parts are manufactured using the pultrusion method. This ensures that the components are ready for use without major machining operations.
  • reinforced fibers can be set in the component in a specified manner. Preferably there are remarkably fewer reinforced fibers extending in the cross-machine direction than extending in the lateral direction of the machine. In this way the blade, backing blade, blade holder and even the adapter component, if any, adapt to the shapes of the surface to be doctored. That is, the entire treatment equipment is controllably flexible in the cross direction of the machine. This eliminates vibration problems of the treatment equipment and uneven blade wear, among other things.
  • the known micro-screws designed for profile control are unnecessary. Instead, the major part of reinforced fibers is found extending in the lateral direction of the machine, in which case the treatment equipment can be loaded against the surface. That is, the components are rigid for transferring the force.
  • the above-described construction also enables a quick adjustment of the treatment equipment.
  • Various types of blade holders can be attached to the frame and similarly, various types of blades and backing blades can be quickly replaced in the blade holders. In this way it is possible to obtain a suitable combination for each situation by changing the components. Due to the removable backing blade, the blade holder can additionally be entirely cleaned. This is easy also on the outside of the machine, as the whole blade holder can be simply removed from the machine.
  • Composite-construction treatment equipment is advantageous as regards the operation as well.
  • the tested blade holders weigh only 3 kg/m, in which case bending due to their own weight is nonexistent.
  • the blade holder can be installed in the treatment equipment manually without cranes or other supports.
  • the composite-construction endures well sudden impacts and returns to the original shape in spite of even major deformations.
  • the composite-construction breaks totally at once, functioning thus as a special safety fuse.
  • the operation of the treatment equipment can also be easily monitored by installing diaphragm sensors, for example, between the blade and the backing blade for determining the loading pressure profile.
  • the treatment equipment according to the invention is simple to manufacture, yet versatile to use. In addition, installing the treatment equipment and changing its components is quick, which reduces production breaks.
  • the blade holder is light in weight, and therefore its storing and especially handling is easy. Also, in using the blade holder, less force is required than before.
  • Another significant aspect is also the possibility of combining various components into a combination appropriate for each situation. Consequently, the desired doctoring result is obtained in each position, also when the geometry of the position changes, for example, when changing in a certain position a roll, whose diameter differs from that of the previously used roll.
  • the treatment equipment can be reset during a grade change shutdown even when changing the production parameters, which is impossible in the known treatment equipment.

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  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Knives (AREA)
US10/542,074 2003-01-30 2004-01-27 Composite-construction treatment equipment Abandoned US20060180291A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20035010 2003-01-30
FI20035010A FI114328B (fi) 2003-01-30 2003-01-30 Komposiittirakenteinen käsittelylaitteisto
PCT/FI2004/050006 WO2004067839A1 (en) 2003-01-30 2004-01-27 Composite-construction treatment equipment

Publications (1)

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US20060180291A1 true US20060180291A1 (en) 2006-08-17

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US10/542,074 Abandoned US20060180291A1 (en) 2003-01-30 2004-01-27 Composite-construction treatment equipment

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US (1) US20060180291A1 (fi)
EP (1) EP1587986B1 (fi)
JP (1) JP4448126B2 (fi)
CN (1) CN100572660C (fi)
CA (1) CA2511375C (fi)
FI (1) FI114328B (fi)
WO (1) WO2004067839A1 (fi)

Cited By (14)

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US20060289141A1 (en) * 2005-06-17 2006-12-28 Ilkka Rata Composite Doctor Arrangement
US20080190579A1 (en) * 2006-08-16 2008-08-14 Kadant Web Systems, Inc. Doctor blade holder permitting efficient assembly of doctor assemblies and replacement of doctor blades
US20080245246A1 (en) * 2005-09-16 2008-10-09 Didier Dupertuis Apparatus For Coating a Cylinder, in Particular a Wiping Cylinder of an Intaglio Printing Press
US20090148208A1 (en) * 2007-12-06 2009-06-11 Kadant Web Systems, Inc. Integrated doctor blade holders
US20090308270A1 (en) * 2006-08-29 2009-12-17 Daetwyler Swisstec Ag Doctor blade
US20100032112A1 (en) * 2007-02-22 2010-02-11 Tore Eriksson Device and method for creping of paper
US20100186770A1 (en) * 2009-01-23 2010-07-29 Johnson Robert P Systems and methods for providing improved dewatering performance in a papermaking machine
US20100215857A1 (en) * 2007-10-10 2010-08-26 Metso Paper, Inc. Doctor Apparatus and a Method for a Web Forming Machine for Doctoring a Moving Surface as Well as a Blade Holder
WO2012078997A2 (en) 2010-12-10 2012-06-14 Kadant Inc. Doctor blade holder
US8771473B2 (en) 2009-12-11 2014-07-08 Valmet Technologies, Inc. Doctor blade for a fiber web machine and doctor arrangement in a fiber web machine
US20150122444A1 (en) * 2013-11-06 2015-05-07 Kadant Inc. Doctor blade holder systems
US10183298B2 (en) * 2014-03-07 2019-01-22 The Procter & Gamble Company Manufacturing apparatus
US10365588B2 (en) * 2015-10-30 2019-07-30 Hp Indigo B.V. Wiper holder for reproduction apparatus
CN114250643A (zh) * 2020-09-25 2022-03-29 维美德技术有限公司 纤维幅材机的刮刀设备及其吹气设备

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EP1664427A1 (en) 2003-09-08 2006-06-07 Kadant Web Systems Inc. Doctor blade purge system
FI117403B (fi) * 2005-09-28 2006-09-29 Ike Service Oy Terä, terän rakenneosat ja menetelmät terän ja terän rakenneosien valmistamiseksi
AT502824B1 (de) * 2006-02-16 2007-06-15 Bartelmuss Klaus Ing Einrichtung zur lösbaren befestigung eines in einer anlage zur papiererzeugung befindlichen halters für eine schaberklinge
WO2008037850A1 (en) * 2006-09-27 2008-04-03 Metso Paper, Inc. Method of manufacturing a doctor blade, a doctor blade and a blade holder
ES2311416B1 (es) * 2007-07-24 2009-12-03 Jose Joaquin Amonarriz Azcolain Doctor para la industria papelera.
FI120461B (fi) * 2007-09-11 2009-10-30 Metso Paper Inc Laitteisto rainanmuodostuskonetta varten
DE102009002027A1 (de) * 2009-03-31 2010-10-07 Voith Patent Gmbh Vorrichtung zur Egalisierung
FI121390B (fi) * 2009-03-31 2010-10-29 Runtech Systems Oy Paperikoneen kaavinlaitteisto ja menetelmä paperikoneen kaavinlaitteiston tehostamiseksi
FI121853B (fi) * 2009-12-11 2011-05-13 Metso Paper Inc Kaavinterä kuiturainakonetta varten ja kaavinsovitelma kuiturainakoneessa
EP3240680B1 (en) * 2014-12-30 2020-05-06 Kimberly-Clark Worldwide, Inc. Dampened creping blade

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US6942734B2 (en) * 2003-02-20 2005-09-13 Metso Paper, Inc. Treatment equipment

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US6687950B1 (en) * 1998-06-09 2004-02-10 Metso Paper, Inc. Doctor blade and blade holder comprising composite material and ceramic coating
US6942734B2 (en) * 2003-02-20 2005-09-13 Metso Paper, Inc. Treatment equipment

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060289141A1 (en) * 2005-06-17 2006-12-28 Ilkka Rata Composite Doctor Arrangement
US7618518B2 (en) * 2005-06-17 2009-11-17 Metso Paper, Inc. Composite doctor arrangement
US20080245246A1 (en) * 2005-09-16 2008-10-09 Didier Dupertuis Apparatus For Coating a Cylinder, in Particular a Wiping Cylinder of an Intaglio Printing Press
US8667927B2 (en) * 2005-09-16 2014-03-11 Kba-Notasys Sa Apparatus for coating a cylinder, in particular a wiping cylinder of an intaglio printing press
US7867364B2 (en) 2006-08-16 2011-01-11 Kadant Inc. Doctor blade holder permitting efficient assembly of doctor assemblies and replacement of doctor blades
US20080190579A1 (en) * 2006-08-16 2008-08-14 Kadant Web Systems, Inc. Doctor blade holder permitting efficient assembly of doctor assemblies and replacement of doctor blades
US20090308270A1 (en) * 2006-08-29 2009-12-17 Daetwyler Swisstec Ag Doctor blade
US8202395B2 (en) * 2007-02-22 2012-06-19 Cs Produktion Antiebolag Method for the creping of paper
US20100032112A1 (en) * 2007-02-22 2010-02-11 Tore Eriksson Device and method for creping of paper
US20100215857A1 (en) * 2007-10-10 2010-08-26 Metso Paper, Inc. Doctor Apparatus and a Method for a Web Forming Machine for Doctoring a Moving Surface as Well as a Blade Holder
US8152966B2 (en) * 2007-10-10 2012-04-10 Metso Paper, Inc. Doctor apparatus and a method for a web forming machine for doctoring a moving surface as well as a blade holder
WO2009076128A1 (en) * 2007-12-06 2009-06-18 Kadant Web Systems, Inc. Doctor blade holder
US8321992B2 (en) * 2007-12-06 2012-12-04 Kadant Web Systems, Inc. Integrated doctor blade holders
US20090148208A1 (en) * 2007-12-06 2009-06-11 Kadant Web Systems, Inc. Integrated doctor blade holders
US20100200187A1 (en) * 2009-01-23 2010-08-12 Johnson Robert P Systems and methods for providing improved dewatering performance in a papermaking machine
US20100186770A1 (en) * 2009-01-23 2010-07-29 Johnson Robert P Systems and methods for providing improved dewatering performance in a papermaking machine
US8337666B2 (en) 2009-01-23 2012-12-25 Kadant, Inc. Systems and methods for providing improved dewatering performance in a papermaking machine
US8337667B2 (en) 2009-01-23 2012-12-25 Kadant, Inc. Systems and methods for providing improved dewatering performance in a papermaking machine
US8771473B2 (en) 2009-12-11 2014-07-08 Valmet Technologies, Inc. Doctor blade for a fiber web machine and doctor arrangement in a fiber web machine
WO2012078997A2 (en) 2010-12-10 2012-06-14 Kadant Inc. Doctor blade holder
US8898851B2 (en) 2010-12-10 2014-12-02 Kadant, Inc. Doctor blade holder
US20150122444A1 (en) * 2013-11-06 2015-05-07 Kadant Inc. Doctor blade holder systems
US9518359B2 (en) * 2013-11-06 2016-12-13 Kadant, Inc. Doctor blade holder systems
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US11643780B2 (en) * 2020-09-25 2023-05-09 Valmet Technologies, Inc. Blowing equipment for doctor equipment of a fiber web machine and fiber web machine doctor equipment equipped with blowing equipment

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CA2511375A1 (en) 2004-08-12
CA2511375C (en) 2008-06-03
CN1738942A (zh) 2006-02-22
EP1587986A1 (en) 2005-10-26
WO2004067839A1 (en) 2004-08-12
EP1587986B1 (en) 2012-11-28
FI114328B (fi) 2004-09-30
FI20035010A0 (fi) 2003-01-30
FI20035010A (fi) 2004-07-31
JP2006516686A (ja) 2006-07-06
JP4448126B2 (ja) 2010-04-07
CN100572660C (zh) 2009-12-23

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