US2654295A - Refiner apparatus - Google Patents
Refiner apparatus Download PDFInfo
- Publication number
- US2654295A US2654295A US224121A US22412151A US2654295A US 2654295 A US2654295 A US 2654295A US 224121 A US224121 A US 224121A US 22412151 A US22412151 A US 22412151A US 2654295 A US2654295 A US 2654295A
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- US
- United States
- Prior art keywords
- grooves
- pulp
- working
- discs
- refiner
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/12—Shape or construction of discs
Definitions
- the working faces Of'fWh-iGh include outwardly directed grooves havingv curved. cross sections offset from, the line. perpendicular from such working faces, the grooves :thus being of asymmetric characterwith respectto suchnerpendicular'line.
- the oifset' rooves. of; thee-respective; relatively: revolvin -s members are found to coact with oneanother to rotate; the: pulp. stock: asit, travels along the grooves and. to whirl it about" the longitudinal groove axes.
- FIG. 3 represents a fr mentary'face of one quadrant of a stationary-refinerdiso wliich is adapted to be disposed face-to-face with re spect to the revolving disc represented in 'Fig: 1
- Fig. 4 represents a sectional view taken as-'-in-- dicated by the lines and arrows IV-IV, which continuation in appear in Fig. 3;
- Figs. 6'8 represent sectional views simil'arto Fig. 5, indicating the relative-positions of theparts of the revolving and stationary discs-in'tlie' course of operationof'the apparatus;
- Figs. 9-12 represent sectionalviews, similar 'to Figs. 5-8, of a modified-form of-theinvention
- the working-faces 21 are the elongate. grooves :22 separated from one another by the intervening ridges 28".
- the inner: annular groove 23 divides the Working face into inner and aoutenannularwork ing sectionszfi, 25;.
- Theelongate: grooves; 22" of inner working section 25:” are'atan 1 angle to the corresponding grooves 221: of: the immediately adjacent portion of outerworking-section 2.6 asfully brought out in my-aforementioned copending U. S. application Serial No. ⁇ 193;643'.
- the revolving. disc, 20 (Figs. .1, v2:),has. a hub '21 at its center'- and a;plurality;-ofspacedjeapart, relatively wide and deep radial passages; 3,0.
- a refiner comprising a pair of relatively revolving refining discs having adjacent coacting Working faces substantially parallel to one another, each of said Working faces including elongate non-radial pulp carrying grooves all extending outwardly in the direction of the periphery of the disc, means for introducing fi brous pulp suspension to the inner ends of said grooves and for Withdrawing said fibrous pulp suspension from their outer ends, the grooves of the respective discs being similar as to size and shape but disposed at angles to one another, and said grooves having curved offset cross sections the axes of which cross sections are substantially parallel to one another and extend at an angle to the line perpendicular to the working faces, and to the plane of said working face.
- a refiner comprising a pair of relatively revolving refining discs having adiacent coacting working faces substantially parallel to one another, each of said working faces including elongate non-radial pulp carrying grooves all extending outwardly in the direction of the periphery of the disc, means for introducing fibrous pulp suspension to the inner ends of said grooves and for withdrawing said fibrous pulp suspension from their outer ends, the grooves of the respective discs having curved offset cross sections, the axes of the cross sections of the grooves on one disc extending at an angle to the groove cross section axes of the other disc, all said axes being at substantially the same angle to a plane extending generally parallel to the working faces of the discs.
- a fiber pulp refiner comprising relatively revolving pulp refining member having coacting adjacent working faces ubstantially parallel to one another, each of said working faces including a set of elongate grooves parallel to one another and extending outwardly in the direction of the outer edges of the Working faces, said grooves having curved cross sections, one end of the curve being at the working face and the other end spaced therefrom, and said grooves also having flat faces extending from said other end of the curve to said working face, said fiat face being disposed at an angle to the Working face and to a line perpendicular to said working face, means for introducing pulp suspension to the inner ends of said grooves, and means for withdrawing the refined pulp from the outer ends of said grooves.
- a pair of refiner discs having coacting adjacent Working faces, one of said discs bein stationary and the other revolving, said discs including elongate pulp carrying grooves directed outwardly on said working faces, at least some of the grooves of the revolving disc having in cross section a curved surface and a flat-surface, said curved surface forming an acute angle with the working face of the disc at the lagging edge of the groove, and said flat'face and working face forming an obtuse angle at the leading edge of the groove.
- a fiber pulp refiner comprising relatively revolving pulp refining members having coacting adjacent working faces substantially parallel to one another, each of said Working faces ineluding an annular groove and a plurality of outwardly non-radially directed grooves disposed on the working faces outwardly of said annular groove, ridges intervening said outwardly directed grooves, flat faces upwardly inclined on said ridges extending at an angle from the base of said annular groove to the level of said ridges, said outwardly directed grooves having curved cross sectional contours offset from a line perpendicular to said working faces.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Paper (AREA)
Description
Oct. 6, 1953 M. SUTHERLAND REFINER APPARATUS 4 Sheets-Sheet l Filed May 2, 1951 INVENTOR: JEZ/Zerlwzzd ATTORNEYS.
Oct. 6, 1953 M. SUTHERLAND 4 Sheets-Sheet 2 Filed May 2, 1951 INVENTOR: LL sum/mam,
A TTORNEYS.
Patented ca. 6, 1953 Lionel M. Sutherland,
to Sutherlandv Refin N. J acorporation of New Jersey Morrisville, Pa., assignorv Corporation, Trenton,
Application May 2, 1951, Serial No. 224,121, 7 Glaims. (Cl. 92=26) wins-invention relates to-refinerapparatus, and more specifically relates to apparatus including a painof opposed coacting relativelyrevolving re-- fining membersforrefining pulp stock. The in.- vention further concerns pulp refiningdiscs of a character intendedfor incorporation in fiber pulp refining machines such as. the apparatus represented in- U: S. 'Patents Nos. 2,035,994, 2;l56;320 and 2,156',321', forexample.
The machines andrefiner. discs disclosed in the foregoing patents are capable of producing high quality pulpwith low power consumption, and have enjoyed. considerable commercial success. Imsuch machines the-discs have been provided withradially extending grooves, or with other non-radial. grooves which extend-outwardly from thexcenter of the disc-toa. point adjacent its periphery. However; such: grooves have conventionally-been substantially semi-circular in cross section, and have therefore been substantially symmetrical with respect to the line perpendicularto the working face of the disc.
It hasbeenidiscovered that improved refining results are obtained by providing relatively revclving pulp refining-members the working faces Of'fWh-iGh include outwardly directed grooves havingv curved. cross sections offset from, the line. perpendicular from such working faces, the grooves :thus being of asymmetric characterwith respectto suchnerpendicular'line. The oifset' rooves. of; thee-respective; relatively: revolvin -s members are found to coact with oneanother to rotate; the: pulp. stock: asit, travels along the grooves and. to whirl it about" the longitudinal groove axes. Thiswhirling action appears to indllceefiber" disposition, crosswise to the grooves tominimizeifiber damage in the refiner. AccQrdingly-a pulpof higher quality, as compared to thepulp produced in conventional refiners, is obtained.
:It-fis accordingly an object ofthe invention to provide. armechanisin for producing improved refinedi-fibrous'material. It is another object of thein-vention to provide refiner elements for fibrous ma rial fr m producing high quality fibrous stock. Other obiects andadvantages of the invention, includingthe simplicity and-economy of the same, will iapfurther detail-hereinafter, and in the dr wings wher i Fig. 1 represents a fragmentary face view ofv oneequadrant of a; revolving refiner disc constituting one embodiment of this invention;
2: represents a sectional view taken asiindicated by the lines andarrows II,II,,which apnea a e. 1:.
relatively revolving pulp Fig. 3 represents a fr mentary'face of one quadrant of a stationary-refinerdiso wliich is adapted to be disposed face-to-face with re spect to the revolving disc represented in 'Fig: 1 Fig. 4 representsa sectional view taken as-'-in-- dicated by the lines and arrows IV-IV, which continuation in appear in Fig. 3;
, Fig; 5=represents= a fragmentary enlarged sec tional view of the refiner discs of'Figs: 1' and 3; taken as. indicated by the,lines-and-arrows v v which appear in Figs. 1' and"3;therevolvingand stationary discs being arranged 'faceto face;
Figs. 6'8 represent sectional views simil'arto Fig. 5, indicating the relative-positions of theparts of the revolving and stationary discs-in'tlie' course of operationof'the apparatus; and
Figs. 9-12 represent sectionalviews, similar 'to Figs. 5-8, of a modified-form of-theinvention;
It will be appreciatedthatthe embodiments of the inventionz selected for illustration-in the drawings constitute preferred embodimentsof' the invention, and maybe modified in many particulars without departing from the-scope'of the. invention.
Referring now particularly to Figs. 1'4 -of;'the drawings, the refiner elements-211M012;'are in the .orm .of fiat discs having working faces 2 IE Dis-- posed: non-radially along. the working-faces 21 are the elongate. grooves :22 separated from one another by the intervening ridges 28". Thegrooves 22 aredisposediin groups andarrangedi at various angles onthe face of the dise Z-U substantially in, thelmannerzdescribed in: detail" inmy aforementioned copending U1 S; application Serial No. 193,643, of which-this application is=a= part, and the disclosure of which isincorporated herein by reference. Theelongate grooves 22" extend non-radially generally outwardly or toward. the peripheries of the re=- finer discs 20, 20a.
The numbers 23,, 24--designateinner andiouter" annular grooves in theworkingwfaces of the flat discs 2 9. The inner: annular groove 23 divides the Working face into inner and aoutenannularwork ing sectionszfi, 25;. Theelongate: grooves; 22" of inner working section 25:" are'atan 1 angle to the corresponding grooves 221: of: the immediately adjacent portion of outerworking-section 2.6 asfully brought out in my-aforementioned copending U. S. application Serial No.\193;643'.
The revolving. disc, 20 (Figs. .1, v2:),has. a hub '21 at its center'- and a;plurality;-ofspacedjeapart, relatively wide and deep radial passages; 3,0. Radial passages .have inclined .floors 31: which slope upwardly from hub'2;1 to annulargroovefiik Alternate ridg s 2:8 or, outer; working sectiomlfifi riphery of said disc, said grooves having curved cross sections the axes of which cross sections extend at an angle to a line perpendicular to said working face, and to the plane of the working face.
3. A refiner comprising a pair of relatively revolving refining discs having adjacent coacting Working faces substantially parallel to one another, each of said Working faces including elongate non-radial pulp carrying grooves all extending outwardly in the direction of the periphery of the disc, means for introducing fi brous pulp suspension to the inner ends of said grooves and for Withdrawing said fibrous pulp suspension from their outer ends, the grooves of the respective discs being similar as to size and shape but disposed at angles to one another, and said grooves having curved offset cross sections the axes of which cross sections are substantially parallel to one another and extend at an angle to the line perpendicular to the working faces, and to the plane of said working face.
4. A refiner comprising a pair of relatively revolving refining discs having adiacent coacting working faces substantially parallel to one another, each of said working faces including elongate non-radial pulp carrying grooves all extending outwardly in the direction of the periphery of the disc, means for introducing fibrous pulp suspension to the inner ends of said grooves and for withdrawing said fibrous pulp suspension from their outer ends, the grooves of the respective discs having curved offset cross sections, the axes of the cross sections of the grooves on one disc extending at an angle to the groove cross section axes of the other disc, all said axes being at substantially the same angle to a plane extending generally parallel to the working faces of the discs.
5. A fiber pulp refiner comprising relatively revolving pulp refining member having coacting adjacent working faces ubstantially parallel to one another, each of said working faces including a set of elongate grooves parallel to one another and extending outwardly in the direction of the outer edges of the Working faces, said grooves having curved cross sections, one end of the curve being at the working face and the other end spaced therefrom, and said grooves also having flat faces extending from said other end of the curve to said working face, said fiat face being disposed at an angle to the Working face and to a line perpendicular to said working face, means for introducing pulp suspension to the inner ends of said grooves, and means for withdrawing the refined pulp from the outer ends of said grooves.
6. In a pulp refiner, a pair of refiner discs having coacting adjacent Working faces, one of said discs bein stationary and the other revolving, said discs including elongate pulp carrying grooves directed outwardly on said working faces, at least some of the grooves of the revolving disc having in cross section a curved surface and a flat-surface, said curved surface forming an acute angle with the working face of the disc at the lagging edge of the groove, and said flat'face and working face forming an obtuse angle at the leading edge of the groove.
7. A fiber pulp refiner comprising relatively revolving pulp refining members having coacting adjacent working faces substantially parallel to one another, each of said Working faces ineluding an annular groove and a plurality of outwardly non-radially directed grooves disposed on the working faces outwardly of said annular groove, ridges intervening said outwardly directed grooves, flat faces upwardly inclined on said ridges extending at an angle from the base of said annular groove to the level of said ridges, said outwardly directed grooves having curved cross sectional contours offset from a line perpendicular to said working faces.
LIONEL M. SUTI-IERLAND.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,160,964 Warren Nov. 16, 1915 1,187,932 Ryther June 20, 1916 1,795,603 Hussey Mar. 10, 1931 1,814,587 Daniels July 14, 1931 2,035,994 Sutherland Mar. 31, 1936 2,156,320 Sutherland May 2, 1939 2,156,321 Sutherland May 2, 1939 2,424,726 Wells July 29, 1947
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US224121A US2654295A (en) | 1951-05-02 | 1951-05-02 | Refiner apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US224121A US2654295A (en) | 1951-05-02 | 1951-05-02 | Refiner apparatus |
Publications (1)
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US2654295A true US2654295A (en) | 1953-10-06 |
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US224121A Expired - Lifetime US2654295A (en) | 1951-05-02 | 1951-05-02 | Refiner apparatus |
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Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2778282A (en) * | 1955-03-10 | 1957-01-22 | Sutherland Refiner Corp | Pulp refining apparatus |
US2934278A (en) * | 1956-03-14 | 1960-04-26 | Noble & Wood Machine Company | Combination jordan and disc refiner for paper stock |
US2936128A (en) * | 1955-12-08 | 1960-05-10 | Bidwell Howard | Apparatus for the treatment of paper stock |
US2968444A (en) * | 1956-11-07 | 1961-01-17 | Ed Jones Corp | Refining discs |
US3089655A (en) * | 1960-08-22 | 1963-05-14 | Heinz Adolf | Processing waste paper or the like |
US3214104A (en) * | 1961-07-07 | 1965-10-26 | Voith Gmbh J M | Paper making apparatus |
US3674217A (en) * | 1970-07-30 | 1972-07-04 | Rolf Bertil Reinhall | Pulp fiberizing grinding plate |
US3880367A (en) * | 1973-09-14 | 1975-04-29 | Suncrest Products Inc | Grain mill |
US3910511A (en) * | 1974-05-20 | 1975-10-07 | Westvaco Corp | Open discharge pulp refiner |
US4039154A (en) * | 1975-03-12 | 1977-08-02 | Sca Development Aktiebolag | Refining element |
US4449670A (en) * | 1981-10-29 | 1984-05-22 | The Goodyear Tire & Rubber Company | Comminuting apparatus with improved feed system |
US4449674A (en) * | 1981-10-29 | 1984-05-22 | The Goodyear Tire & Rubber Company | Comminuting apparatus with improved impeller construction |
US4469284A (en) * | 1981-10-29 | 1984-09-04 | The Goodyear Tire & Rubber Company | Comminuting apparatus with improved rotor and stator recess construction |
EP0135697A2 (en) * | 1983-08-30 | 1985-04-03 | Wilhelm Siefer GmbH & Co. KG | A multi-stage grinding device, especially for plastic masses, polymers for the modification of bitumen, P.T.F.E.- and regenerated rubber , offal for animal feed a.s.f. |
US4614310A (en) * | 1981-10-29 | 1986-09-30 | The Goodyear Tire & Rubber Company | Comminuting apparatus with fluid cylinder rotor and stator biasing |
US5011091A (en) * | 1989-08-10 | 1991-04-30 | Haybuster Manufacturing Inc. | Cellulose fiberization apparatus |
US5039022A (en) * | 1989-09-05 | 1991-08-13 | Kamyr Ab | Refiner element pattern achieving successive compression before impact |
US5085735A (en) * | 1989-09-05 | 1992-02-04 | Kamyr Ab | Method of refining cellulosic fibrous material with successive expansions before impacts, and expansions, to achieve increased fiber flexibility |
US5181664A (en) * | 1992-04-17 | 1993-01-26 | Andritz Sprout-Bauer, Inc. | Grinding plate with angled outer bars |
US5683048A (en) * | 1994-08-18 | 1997-11-04 | Sunds Defibrator Industries Ab | Refining elements |
US5704559A (en) * | 1994-06-29 | 1998-01-06 | Sunds Defibrator Industries Ab | Refining element |
US5779168A (en) * | 1995-03-08 | 1998-07-14 | Voith Sulzer Stoffaufbereitung Gmbh | Refiner and tooling for refining suspended fibrous material |
US6443353B1 (en) | 1999-05-25 | 2002-09-03 | Voith Sulzer Papiertechnik Patent Gmbh | Fittings and process for producing fittings for the mechanical processing of aqueous paper stock |
US20120032010A1 (en) * | 2010-08-06 | 2012-02-09 | Officine Airaghi S.R.L | Spare part for disc refiners for the production of paper |
US8388807B2 (en) | 2011-02-08 | 2013-03-05 | International Paper Company | Partially fire resistant insulation material comprising unrefined virgin pulp fibers and wood ash fire retardant component |
US8663427B2 (en) | 2011-04-07 | 2014-03-04 | International Paper Company | Addition of endothermic fire retardants to provide near neutral pH pulp fiber webs |
US8685206B2 (en) | 2010-08-03 | 2014-04-01 | International Paper Company | Fire retardant treated fluff pulp web and process for making same |
US20170320063A1 (en) * | 2014-10-29 | 2017-11-09 | Valmet Technologies Oy | Blade Element for Refiner |
EP3865622A1 (en) * | 2020-02-17 | 2021-08-18 | Valmet Ab | Blade for a refiner, blade pair for a disc refiner and refiner comprising at least one blade |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1160964A (en) * | 1912-04-29 | 1915-11-16 | John E Warren | Beating-engine. |
US1187932A (en) * | 1915-10-30 | 1916-06-20 | Ryther & Pringle Co | Machine for refining paper-stock. |
US1795603A (en) * | 1928-03-08 | 1931-03-10 | Bauer Bros Co | Method of producing pulp |
US1814587A (en) * | 1928-03-31 | 1931-07-14 | Riley Stoker Corp | Pulp refining apparatus |
US2035994A (en) * | 1934-10-03 | 1936-03-31 | Jr Daniel Manson Sutherland | Fiber refining and refiner |
US2156320A (en) * | 1936-04-01 | 1939-05-02 | Lionel M Sutherland | Fiber pulp refiner |
US2156321A (en) * | 1936-04-01 | 1939-05-02 | Lionel M Sutherland | Fiber pulp refiner |
US2424726A (en) * | 1944-12-28 | 1947-07-29 | Wells Harold Donald | Pulp beater and selector |
-
1951
- 1951-05-02 US US224121A patent/US2654295A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1160964A (en) * | 1912-04-29 | 1915-11-16 | John E Warren | Beating-engine. |
US1187932A (en) * | 1915-10-30 | 1916-06-20 | Ryther & Pringle Co | Machine for refining paper-stock. |
US1795603A (en) * | 1928-03-08 | 1931-03-10 | Bauer Bros Co | Method of producing pulp |
US1814587A (en) * | 1928-03-31 | 1931-07-14 | Riley Stoker Corp | Pulp refining apparatus |
US2035994A (en) * | 1934-10-03 | 1936-03-31 | Jr Daniel Manson Sutherland | Fiber refining and refiner |
US2156320A (en) * | 1936-04-01 | 1939-05-02 | Lionel M Sutherland | Fiber pulp refiner |
US2156321A (en) * | 1936-04-01 | 1939-05-02 | Lionel M Sutherland | Fiber pulp refiner |
US2424726A (en) * | 1944-12-28 | 1947-07-29 | Wells Harold Donald | Pulp beater and selector |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2778282A (en) * | 1955-03-10 | 1957-01-22 | Sutherland Refiner Corp | Pulp refining apparatus |
US2936128A (en) * | 1955-12-08 | 1960-05-10 | Bidwell Howard | Apparatus for the treatment of paper stock |
US2934278A (en) * | 1956-03-14 | 1960-04-26 | Noble & Wood Machine Company | Combination jordan and disc refiner for paper stock |
US2968444A (en) * | 1956-11-07 | 1961-01-17 | Ed Jones Corp | Refining discs |
US3089655A (en) * | 1960-08-22 | 1963-05-14 | Heinz Adolf | Processing waste paper or the like |
US3214104A (en) * | 1961-07-07 | 1965-10-26 | Voith Gmbh J M | Paper making apparatus |
US3674217A (en) * | 1970-07-30 | 1972-07-04 | Rolf Bertil Reinhall | Pulp fiberizing grinding plate |
US3880367A (en) * | 1973-09-14 | 1975-04-29 | Suncrest Products Inc | Grain mill |
US3910511A (en) * | 1974-05-20 | 1975-10-07 | Westvaco Corp | Open discharge pulp refiner |
US4039154A (en) * | 1975-03-12 | 1977-08-02 | Sca Development Aktiebolag | Refining element |
US4449670A (en) * | 1981-10-29 | 1984-05-22 | The Goodyear Tire & Rubber Company | Comminuting apparatus with improved feed system |
US4449674A (en) * | 1981-10-29 | 1984-05-22 | The Goodyear Tire & Rubber Company | Comminuting apparatus with improved impeller construction |
US4469284A (en) * | 1981-10-29 | 1984-09-04 | The Goodyear Tire & Rubber Company | Comminuting apparatus with improved rotor and stator recess construction |
US4614310A (en) * | 1981-10-29 | 1986-09-30 | The Goodyear Tire & Rubber Company | Comminuting apparatus with fluid cylinder rotor and stator biasing |
EP0135697A2 (en) * | 1983-08-30 | 1985-04-03 | Wilhelm Siefer GmbH & Co. KG | A multi-stage grinding device, especially for plastic masses, polymers for the modification of bitumen, P.T.F.E.- and regenerated rubber , offal for animal feed a.s.f. |
EP0135697A3 (en) * | 1983-08-30 | 1986-10-22 | Wilhelm Siefer Gmbh & Co. Kg | A multi-stage grinding device, especially for plastic masses, polymers for the modification of bitumen, p.t.f.e.- and regenerated rubber , offal for animal feed a.s.f. |
US5011091A (en) * | 1989-08-10 | 1991-04-30 | Haybuster Manufacturing Inc. | Cellulose fiberization apparatus |
US5085735A (en) * | 1989-09-05 | 1992-02-04 | Kamyr Ab | Method of refining cellulosic fibrous material with successive expansions before impacts, and expansions, to achieve increased fiber flexibility |
US5039022A (en) * | 1989-09-05 | 1991-08-13 | Kamyr Ab | Refiner element pattern achieving successive compression before impact |
US5181664A (en) * | 1992-04-17 | 1993-01-26 | Andritz Sprout-Bauer, Inc. | Grinding plate with angled outer bars |
US5704559A (en) * | 1994-06-29 | 1998-01-06 | Sunds Defibrator Industries Ab | Refining element |
US5683048A (en) * | 1994-08-18 | 1997-11-04 | Sunds Defibrator Industries Ab | Refining elements |
US5779168A (en) * | 1995-03-08 | 1998-07-14 | Voith Sulzer Stoffaufbereitung Gmbh | Refiner and tooling for refining suspended fibrous material |
US6443353B1 (en) | 1999-05-25 | 2002-09-03 | Voith Sulzer Papiertechnik Patent Gmbh | Fittings and process for producing fittings for the mechanical processing of aqueous paper stock |
US8685206B2 (en) | 2010-08-03 | 2014-04-01 | International Paper Company | Fire retardant treated fluff pulp web and process for making same |
US8871053B2 (en) | 2010-08-03 | 2014-10-28 | International Paper Company | Fire retardant treated fluff pulp web |
US8870109B2 (en) * | 2010-08-06 | 2014-10-28 | Officine Airaghi S.R.L. | Spare part for disc refiners for the production of paper |
US20120032010A1 (en) * | 2010-08-06 | 2012-02-09 | Officine Airaghi S.R.L | Spare part for disc refiners for the production of paper |
US8388807B2 (en) | 2011-02-08 | 2013-03-05 | International Paper Company | Partially fire resistant insulation material comprising unrefined virgin pulp fibers and wood ash fire retardant component |
US8663427B2 (en) | 2011-04-07 | 2014-03-04 | International Paper Company | Addition of endothermic fire retardants to provide near neutral pH pulp fiber webs |
US8871058B2 (en) | 2011-04-07 | 2014-10-28 | International Paper Company | Addition of endothermic fire retardants to provide near neutral pH pulp fiber webs |
US20170320063A1 (en) * | 2014-10-29 | 2017-11-09 | Valmet Technologies Oy | Blade Element for Refiner |
US10464068B2 (en) * | 2014-10-29 | 2019-11-05 | Valmet Technologies Oy | Blade element for refiner |
EP3865622A1 (en) * | 2020-02-17 | 2021-08-18 | Valmet Ab | Blade for a refiner, blade pair for a disc refiner and refiner comprising at least one blade |
SE2050170A1 (en) * | 2020-02-17 | 2021-08-18 | Valmet Oy | Blade for a refiner |
CN113338068A (en) * | 2020-02-17 | 2021-09-03 | 维美德公司 | Blade for refiner |
SE544375C2 (en) * | 2020-02-17 | 2022-04-26 | Valmet Oy | Blade for a refiner |
CN113338068B (en) * | 2020-02-17 | 2023-03-03 | 维美德公司 | Blade or blade pair for a refiner and refiner comprising such blades |
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