WO1999012726A1 - Caring doctor blade and method for manufacture of same - Google Patents
Caring doctor blade and method for manufacture of same Download PDFInfo
- Publication number
- WO1999012726A1 WO1999012726A1 PCT/FI1998/000690 FI9800690W WO9912726A1 WO 1999012726 A1 WO1999012726 A1 WO 1999012726A1 FI 9800690 W FI9800690 W FI 9800690W WO 9912726 A1 WO9912726 A1 WO 9912726A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- doctor blade
- layers
- carbon fibre
- grinding particles
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
- B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
- B29C70/025—Combinations of fibrous reinforcement and non-fibrous material with particular filler
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
- D21G3/005—Doctor knifes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24174—Structurally defined web or sheet [e.g., overall dimension, etc.] including sheet or component perpendicular to plane of web or sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
Definitions
- the invention concerns a caring doctor blade for a paper/board machine and a method for manufacture of same.
- doctor blades are employed.
- Typical commercial blades are described, for example, in the US Patent 4,549,933 and in the SU Patent 1,694,755.
- a doctor blade for a paper machine which consists of a number of alternating layers of fibre and carbon fibre so that the fibre layer may be composed of cotton, paper, fibreglass, or equivalent.
- Such a blade detaches contaminations, but, on the other, foreign material is separated from the blade onto the roll face.
- a doctor blade meant for cleaning of rolls and cylinders is described for use in pulp and paper industry.
- This blade is made of a composite material, in which, over the thickness of the blade, layers of fibre and fabric filler perpendicular to the blade edge alternate.
- This doctor blade is used for cleaning of the roll faces.
- the fabric filler for the doctor, carbon band, boron fibre or tungsten is used as fibre, and the alignment of the fibres is perpendicular to the direction of the blade.
- a polishing doctor blade for polishing the metal face of a calender roll.
- the machining face placed at the head of the blade comprises grinding particles mixed with an epoxy matrix, such as carbides or diamonds.
- the blade does not operate as a doctoring blade. It is meant exclusively for calender rolls, at which its function is exclusively to grind/polish the face of the calender roll.
- FI Patent Application No. 941620 a method and an equipment are described for conditioning of the coating on a roll in a paper machine. What is concerned is not a doctor blade, but in the method of FI-941620 the roll is ground by means of a separate grinding rib to be attached to a doctor blade so as to correct the roughness of the roll face to make the face either smoother or rougher, as required. In such a case, the conditioning of the roll face takes place during a standstill on-site, i.e without removing the roll from the machine, but the device does not operate during production or at a production speed.
- Coating with a foreign material often results in alteration of the surface properties of a roll, which again deteriorates the runnability and the properties of paper. If the coating is intensive, the roll face may become excessively smooth, which results, on a centre roll in the press, for example, in more difficult separation of the paper web, passing of the web through the doctor, and, thus, in increased susceptibility of web breaks. Besides the coating effect, a second negative aspect in the case of metal blades is scratching of the roll face or, in some cases, penetration of the blade into the roll coating if a polymer-based coating is concerned. Also, excessive roughening of a roll face, which occurs with prolonged operation of metal blades, causes deterioration of the operating capacity of the roll face.
- Smoothing or roughening of a roll face is typical of a roll that contains ceramic coating material, but it also occurs with other coatings.
- the coating effect of the blades of reinforced plastic commonly employed with ceramic roll coatings mainly results from adhesion of particles detached from the blade by abrasion or from melting of the matrix plastic onto the roll face.
- materials coming from the process also adhere to the roll face, which materials cannot be removed by the doctor from the recesses in the roughness of the face, as the doctor cannot remove the layer of impurities deposited on these materials "anchored" on the bottom of said recesses either, because the adhesion is too strong.
- doctor blade Even the best conventional doctor blade cannot remove all the undesirable material already adhering to the roll face from the roll face, but the blade often brings more material to the roll face. This is why there has been a need to develop a doctor blade which removes undesirable contaminations or other material coated onto the roll face from the roll face to a greater extent than the blade itself brings onto the roll face and which doctor blade keeps the roll face in its original condition or restores it to its original condition.
- the object of the present invention is a caring doctor blade for a paper/board machine, which blade removes undesirable coated material from the roll face and, at the same time, services the roll face, and a method for manufacture of such a blade.
- doctor blade in accordance with the present invention and the method for manufacture of same are characterized in what is stated in the patent claims.
- the problems involved in the prior-art solutions are avoided and the objectives that have been set are achieved.
- the caring doctor blade is not supposed to be exclusively abrasive, as the conventional abrasive blades are, but it is also supposed to have excellent doctoring and cleaning properties.
- the functions of two different blade types are combined.
- the blade is a carbon-fibre/fibreglass composite, which contains a grinding material in a layer that contains fibreglass or carbon fibre. The content of carbon fibre in the composite is high, the content of the matrix material is low, and the fibre orientation is optimal.
- the doctor blade as shown in Fig. 1 comprises a rigid laminate structure consisting of fibreglass and carbon fibre layers 2 and 3 and of at least one caring layer 1.
- the caring layer 1 is surrounded by fibreglass layers and possibly by carbon fibre layers.
- the carbon fibre layers 3 may also contain fibreglass.
- the fibreglass layers 2 are orientated parallel to the longitudinal axis of the blade, and in at least some of the layers that contain carbon fibre, the carbon fibres are orientated substantially obliquely to the longitudinal axis of the doctor blade, preferably transversely to the blade direction.
- the topmost layers 4 are preferably mats with fibreglass surface.
- the caring layer 1 comprises carbon fibres and grinding particles in direct vicinity of the carbon fibres, possibly additionally also glass fibres.
- the grinding particles it is possible to employ silicon carbide particles, diamond, boron nitride, aluminum oxide, or equivalent, the preferable one being silicon carbide.
- the grinding particles have been introduced into connection with the carbon fibres, for example, by impregnating into a carbon fibre fabric by means of a matrix material, which can be thermosetting or thermoplastic resin, and its basic matrix can be fluorinated.
- the nature of the grinding agent (silicon carbide, diamonds, boron nitride, aluminium oxide, or equivalent; preferably silicon carbide) and the particle size (30 ... 250 ⁇ m; preferably 45 ... 125 ⁇ m) and the amount of particles on the wear face placed against the roll are chosen appropriately.
- the amount can be changed by adjusting the density of particles in the layer and/or by increasing the number of the layers that contain particles, for example 1...5 layers.
- the duration of the grinding effect can be regulated by fitting the particles on a certain distance within the wear margin only. In this way the grinding effect can be standardized in the cross direction of the whole roll even if the rate of wear of the blade in different areas were different. When expensive grinding materials are used, it is preferable to place the particles in the area of the wear margin only.
- the thickness of the doctor blade is preferably about 1.3 ... 2.8 mm, while the thicknesses of the individual layers are of an order of about 0.1 ... 0.3 mm, the caring layer about 0.1 ... 0.4 mm.
- the doctor blade is manufactured preferably by means of a pultrusion method. In such a case, the grinding material is brought into connection with the carbon fibre fabric, for example impregnated into said fabric, before the pultrusion stage. Also, conventional methods known from the manufacture of sandwich constructions can be employed.
- the grinding, hard particles, for example silicon carbide are surrounded by carbon fibre.
- the function of the carbon fibre is to conduct the arising friction heat away from the grinding particles so that the matrix material around the particles of grinding material does not burn or melt, with resulting removal of the grinding particles.
- a substantially cross-direction orientation of the carbon fibres provides good conductivity of heat away from the tip of the blade, i.e. away from the matrix which constitutes the fixing agent for the grinding material and from the particles of grinding material, in which case the melting of the matrix is reduced. Further, the rigidity of the blade in the cross direction is high, which improves the doctoring result.
- the blade is, however, resilient in the longitudinal direction of the blade, in which case the blade follows the roll face and complies with the roll face well over the entire length of the blade.
- Such a doctor blade operates excellently as a shearing blade, in addition to the abrading effect; a conventional abrasive blade cannot cut off the impurities.
- a single blade a multiple effect is obtained, which provides evident advantages also in a case in which, on the rolls, both a grinding blade and a shearing blade can be used separately in a doctor.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Centrifugal Separators (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Percussion Or Vibration Massage (AREA)
- Prostheses (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69804427T DE69804427T2 (en) | 1997-09-11 | 1998-09-04 | SCRAPER BLADE AND METHOD FOR THE PRODUCTION THEREOF |
CA002270770A CA2270770C (en) | 1997-09-11 | 1998-09-04 | Caring doctor blade and method for manufacture of same |
US09/297,627 US6416843B1 (en) | 1997-09-11 | 1998-09-04 | Caring doctor blade and method for manufacture of same |
AT98942708T ATE215012T1 (en) | 1997-09-11 | 1998-09-04 | SPRAYER BLADE AND METHOD FOR PRODUCING SAME |
EP98942708A EP0944470B1 (en) | 1997-09-11 | 1998-09-04 | Caring doctor blade and method for manufacture of same |
AU90740/98A AU9074098A (en) | 1997-09-11 | 1998-09-04 | Caring doctor blade and method for manufacture of same |
NO20001206A NO319535B1 (en) | 1997-09-08 | 2000-03-08 | Method and apparatus for controlling a pneumatic cargo paving device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI973659 | 1997-09-11 | ||
FI973659A FI101637B (en) | 1997-09-11 | 1997-09-11 | Caring creation work and procedure for making this |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999012726A1 true WO1999012726A1 (en) | 1999-03-18 |
Family
ID=8549513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1998/000690 WO1999012726A1 (en) | 1997-09-08 | 1998-09-04 | Caring doctor blade and method for manufacture of same |
Country Status (8)
Country | Link |
---|---|
US (2) | US6416843B1 (en) |
EP (1) | EP0944470B1 (en) |
AT (1) | ATE215012T1 (en) |
AU (1) | AU9074098A (en) |
CA (1) | CA2270770C (en) |
DE (1) | DE69804427T2 (en) |
FI (1) | FI101637B (en) |
WO (1) | WO1999012726A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1123751A1 (en) * | 2000-02-08 | 2001-08-16 | Metso Paper, Inc.(Reg.No. 763281) | Composite blade and a method for its manufacture |
WO2002092340A1 (en) * | 2001-05-17 | 2002-11-21 | Lingol Corporation | Composite |
WO2003060231A1 (en) * | 2002-01-11 | 2003-07-24 | S.D. Warren Services Company | Composite doctor blades |
US6643890B2 (en) | 2000-12-01 | 2003-11-11 | S. D. Warren Services Company | Composite doctor blades |
US6687950B1 (en) | 1998-06-09 | 2004-02-10 | Metso Paper, Inc. | Doctor blade and blade holder comprising composite material and ceramic coating |
US6758944B2 (en) | 1998-09-10 | 2004-07-06 | Metso Paper, Inc. | Doctor blade |
WO2007030392A1 (en) * | 2005-09-08 | 2007-03-15 | Kadant Web Systems, Inc. | Planar elements incorporating basalt fibers for use in papermaking apparatus |
WO2007036606A1 (en) | 2005-09-28 | 2007-04-05 | Ike-Service Oy | Blade, structural components op a blade, and method for manufacturing a blade and the structural components of a blade |
WO2007065974A1 (en) * | 2005-12-07 | 2007-06-14 | Exel Oyj | Doctor blade for the roll of a paper or board machine and method for manufacturing the doctor blade |
WO2010146227A1 (en) * | 2009-06-18 | 2010-12-23 | Exel Composites Oyj | Doctor blade material |
WO2014018524A1 (en) * | 2012-07-23 | 2014-01-30 | Kadant Inc. | Doctor blade including combination carbon / glass yarns |
EP2726278A1 (en) * | 2011-06-28 | 2014-05-07 | Exel Composites OYJ | Doctor blade material |
Families Citing this family (15)
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DE20216016U1 (en) * | 2002-10-18 | 2004-03-04 | Rk Siebdrucktechnik Gmbh | Squeegees, especially for screen printing |
DE102004004500A1 (en) * | 2004-01-23 | 2005-08-11 | Joh. Clouth Gmbh & Co. Kg | Blade for a scraper and method of making such a blade |
FI116797B (en) * | 2004-03-25 | 2006-02-28 | Runtech Systems Oy | spring Scraper |
FI1776503T4 (en) * | 2004-06-14 | 2023-08-31 | Planar elements for use in papermaking machines | |
DE102005002640A1 (en) | 2005-01-20 | 2006-07-27 | Voith Paper Patent Gmbh | doctor means |
US7431801B2 (en) * | 2005-01-27 | 2008-10-07 | The Procter & Gamble Company | Creping blade |
US7691236B2 (en) * | 2006-07-26 | 2010-04-06 | The Procter + Gamble Company | Creping blade with a highly smooth bevel surface |
DE112007002273T8 (en) | 2006-09-27 | 2009-11-12 | Metso Paper, Inc. | Method for producing a doctor blade, doctor blade and blade holder |
FI120459B (en) * | 2008-03-06 | 2009-10-30 | Metso Paper Inc | Creator blade and process for making a blade |
JP4681658B2 (en) * | 2009-01-30 | 2011-05-11 | ザインエレクトロニクス株式会社 | Clock control circuit and transmitter |
CN102277773A (en) * | 2009-10-16 | 2011-12-14 | 彭俊超 | Basalt scraper |
CN102154902B (en) * | 2011-03-02 | 2013-06-05 | 彭俊超 | Carbon fiber scraper and manufacturing method thereof |
US9539605B2 (en) * | 2012-02-28 | 2017-01-10 | Toray Plastics (America), Inc. | Gravure roll edge masking system for in-line film coating |
US20140012396A1 (en) | 2012-07-06 | 2014-01-09 | Ossur Hf | Prosthetic foot with hybrid layup |
FI12167U1 (en) | 2017-06-29 | 2018-09-14 | Valmet Technologies Oy | Treating doctor blade for a fibre web machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4549933A (en) * | 1983-07-05 | 1985-10-29 | Thermo Electron Corporation | Doctor blade with non-homogeneous stiffness properties |
US5460565A (en) * | 1992-07-21 | 1995-10-24 | Perneczky; George C. | Pivoting polishing block for use in apparatus for cleaning and polishing roll assemblies |
US5623718A (en) * | 1995-09-06 | 1997-04-22 | Lexmark International, Inc. | Extended life compliant doctor blade with conductive abrasive member |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54149787A (en) * | 1978-05-17 | 1979-11-24 | Ichikawa Woolen Textile | Doctor plate |
US4244691A (en) * | 1978-11-24 | 1981-01-13 | Ciba-Geigy Corporation | Novel water-soluble anthraquinone dyes |
US4680224A (en) | 1984-03-06 | 1987-07-14 | Phillips Petroleum Company | Reinforced plastic |
US4919739A (en) | 1986-11-07 | 1990-04-24 | Basf Aktiengesellschaft | Production of improved preimpregnated material comprising a particulate thermosetting resin suitable for use in the formation of a substantially void-free fiber-reinforced composite article |
US5017643A (en) | 1990-03-20 | 1991-05-21 | Phillips Petroleum Company | Composition and process for making poly (arylene sulfide) resins reinforced with glass fibers |
US5110415A (en) * | 1990-04-23 | 1992-05-05 | Albany International Corp. | Composite doctor blade assembly for pulp or papermaking machine doctors |
US5174862A (en) | 1990-11-30 | 1992-12-29 | S. D. Warren Company | Polishing doctor blade with diamond abrasive particles for a calendering roll |
GB9208003D0 (en) * | 1992-04-10 | 1992-05-27 | Vickerys Ltd | A mounting assembly |
FI105114B (en) | 1994-04-08 | 2000-06-15 | Valmet Paper Machinery Inc | Hardware for rebuilding a paper machine roll coating |
US5662041A (en) * | 1995-05-24 | 1997-09-02 | Trans Tech America, Inc. | Doctor blades for pad printing machines and machines including same |
JP3598787B2 (en) * | 1997-12-17 | 2004-12-08 | 三菱化学株式会社 | Doctor blade holder |
-
1997
- 1997-09-11 FI FI973659A patent/FI101637B/en not_active IP Right Cessation
-
1998
- 1998-09-04 WO PCT/FI1998/000690 patent/WO1999012726A1/en active IP Right Grant
- 1998-09-04 CA CA002270770A patent/CA2270770C/en not_active Expired - Fee Related
- 1998-09-04 AU AU90740/98A patent/AU9074098A/en not_active Abandoned
- 1998-09-04 US US09/297,627 patent/US6416843B1/en not_active Expired - Lifetime
- 1998-09-04 EP EP98942708A patent/EP0944470B1/en not_active Expired - Lifetime
- 1998-09-04 AT AT98942708T patent/ATE215012T1/en active
- 1998-09-04 DE DE69804427T patent/DE69804427T2/en not_active Expired - Lifetime
-
2002
- 2002-07-09 US US10/191,944 patent/US6991757B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4549933A (en) * | 1983-07-05 | 1985-10-29 | Thermo Electron Corporation | Doctor blade with non-homogeneous stiffness properties |
US5460565A (en) * | 1992-07-21 | 1995-10-24 | Perneczky; George C. | Pivoting polishing block for use in apparatus for cleaning and polishing roll assemblies |
US5623718A (en) * | 1995-09-06 | 1997-04-22 | Lexmark International, Inc. | Extended life compliant doctor blade with conductive abrasive member |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN; & JP,A,54 149 787 (ICHIKAWA KEORI KK) 24 November 1979. * |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6687950B1 (en) | 1998-06-09 | 2004-02-10 | Metso Paper, Inc. | Doctor blade and blade holder comprising composite material and ceramic coating |
US6758944B2 (en) | 1998-09-10 | 2004-07-06 | Metso Paper, Inc. | Doctor blade |
EP1123751A1 (en) * | 2000-02-08 | 2001-08-16 | Metso Paper, Inc.(Reg.No. 763281) | Composite blade and a method for its manufacture |
US6820316B2 (en) | 2000-02-08 | 2004-11-23 | Metso Paper, Inc. | Composite blade and a method for its manufacture |
US6926855B1 (en) | 2000-12-01 | 2005-08-09 | S.D. Warren Company | Method of making composite doctor blades |
US6643890B2 (en) | 2000-12-01 | 2003-11-11 | S. D. Warren Services Company | Composite doctor blades |
WO2002092340A1 (en) * | 2001-05-17 | 2002-11-21 | Lingol Corporation | Composite |
US6565712B2 (en) | 2001-05-17 | 2003-05-20 | Lingol Corporation | Composite |
WO2003060231A1 (en) * | 2002-01-11 | 2003-07-24 | S.D. Warren Services Company | Composite doctor blades |
WO2007030392A1 (en) * | 2005-09-08 | 2007-03-15 | Kadant Web Systems, Inc. | Planar elements incorporating basalt fibers for use in papermaking apparatus |
WO2007036606A1 (en) | 2005-09-28 | 2007-04-05 | Ike-Service Oy | Blade, structural components op a blade, and method for manufacturing a blade and the structural components of a blade |
US8308908B2 (en) | 2005-09-28 | 2012-11-13 | Exel Oyj | Blade, structural components of a blade, and method for manufacturing a blade and the structural components of a blade |
US8052844B2 (en) * | 2005-09-28 | 2011-11-08 | Exel Oyj | Blade, structural components of a blade, and method for manufacturing a blade and the structural components of a blade |
EP1960597A1 (en) * | 2005-12-07 | 2008-08-27 | Exel Oyj | Doctor blade for the roll of a paper or board machine and method for manufacturing the doctor blade |
EP1960597A4 (en) * | 2005-12-07 | 2010-11-03 | Exel Oyj | Doctor blade for the roll of a paper or board machine and method for manufacturing the doctor blade |
WO2007065974A1 (en) * | 2005-12-07 | 2007-06-14 | Exel Oyj | Doctor blade for the roll of a paper or board machine and method for manufacturing the doctor blade |
KR101283000B1 (en) * | 2005-12-07 | 2013-07-05 | 엑셀 오와이제이 | Doctor blade for the roll of a paper or board machine and method for manufacturing the doctor blade |
WO2010146227A1 (en) * | 2009-06-18 | 2010-12-23 | Exel Composites Oyj | Doctor blade material |
EP2442974A4 (en) * | 2009-06-18 | 2017-04-12 | Exel Composites OYJ | Doctor blade material |
EP2726278A1 (en) * | 2011-06-28 | 2014-05-07 | Exel Composites OYJ | Doctor blade material |
EP2726278A4 (en) * | 2011-06-28 | 2014-12-31 | Exel Composites Oyj | Doctor blade material |
WO2014018524A1 (en) * | 2012-07-23 | 2014-01-30 | Kadant Inc. | Doctor blade including combination carbon / glass yarns |
CN104662227A (en) * | 2012-07-23 | 2015-05-27 | 卡丹特公司 | Doctor blade including combination carbon / glass yarns |
CN104662227B (en) * | 2012-07-23 | 2016-08-17 | 卡丹特公司 | Scraper including carbon/glass combination yarn |
US9551109B2 (en) | 2012-07-23 | 2017-01-24 | Kadant Inc. | Doctor blade including combination carbon/glass yarns |
Also Published As
Publication number | Publication date |
---|---|
AU9074098A (en) | 1999-03-29 |
CA2270770A1 (en) | 1999-03-18 |
FI101637B1 (en) | 1998-07-31 |
US6416843B1 (en) | 2002-07-09 |
CA2270770C (en) | 2006-01-24 |
DE69804427D1 (en) | 2002-05-02 |
DE69804427T2 (en) | 2002-08-08 |
EP0944470A1 (en) | 1999-09-29 |
EP0944470B1 (en) | 2002-03-27 |
US6991757B2 (en) | 2006-01-31 |
FI101637B (en) | 1998-07-31 |
FI973659A0 (en) | 1997-09-11 |
ATE215012T1 (en) | 2002-04-15 |
US20020176934A1 (en) | 2002-11-28 |
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