US3067816A - Apparatus and process for the manufacture of paper - Google Patents

Apparatus and process for the manufacture of paper Download PDF

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Publication number
US3067816A
US3067816A US3688A US368860A US3067816A US 3067816 A US3067816 A US 3067816A US 3688 A US3688 A US 3688A US 368860 A US368860 A US 368860A US 3067816 A US3067816 A US 3067816A
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US
United States
Prior art keywords
cover
wire
screen
suction box
paper
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.)
Expired - Lifetime
Application number
US3688A
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English (en)
Inventor
William E Gould
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.)
Unifrax 1 LLC
Original Assignee
Carborundum Co
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=21707089&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US3067816(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Carborundum Co filed Critical Carborundum Co
Priority to US3688A priority Critical patent/US3067816A/en
Priority to FI0079/61A priority patent/FI40773B/fi
Application granted granted Critical
Publication of US3067816A publication Critical patent/US3067816A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/52—Suction boxes without rolls
    • D21F1/523—Covers thereof

Definitions

  • This invention relates to an apparatus ⁇ and process for the manufacture of paper. More particularly, it relates to an improved suction box having a cover in which at least the outer surface thereof is composed of a dense, hard ceramic material and a process of making paper therewith.
  • a slurry of wood pulp and water is fed onto a rapidly moving, endless wire screen.
  • the slurry deposited on the screen generally contains less than 1% wood pulp.
  • the screen provides support for the libers While the iibers are matted'and the water drained olf.
  • a sidewise shaking motion is imparted to the moving screen to help orient the fibers and give better felting action.
  • a large portion ofthe Water will normally drain through the ⁇ screen.
  • a vacuum, which i's maintained'in the suction boxes draws water from the partially felted sheet into the boxes through the perforations in the cover. The water which is withdrawn may be recirculated unless too strong- 1y colored.
  • Suction box covers used today are generally made of end grain maple wood. vAlthough the useful life of the covers themselves is adequate, they materially limit the useful life of the wire screen.
  • the slurry passing over the suction box covers on the wire screen invariably has particles of grit and dirt therein. Some of these particles become embedded in Ithe soft wood cover which results in an abrasive action on the rapidly moving wire screen. The covers wear unevenly which also causes undue wear on the wire screen.
  • My invention provides a suction box having a cover which will permit appreciably longer usage of the wire screens.
  • suction box covers made of hard, dense, ceramic materials will not retain grit and other foreign particles which cause abrading action on the Wire screen.
  • Such covers are dimensionally stable and the coefiicient of friction between the cover and the wire screen is low.
  • the useful life of a cover made according to lmy invention is much longer than the life of the wooden suction box covers now used.
  • FIGURE 1 is a perspective View illus- Y trating the general arrangement of a paper-making machine in which my suction box cover may be used;
  • FIGURE 2 is a plan view of a suction box having a cover made according to my invention attached thereto;
  • FIGURE 3 is a section taken on line III-III of FIG- i URE 2;
  • FIGURE 4 is a sectional view of an alternative form of cover made according to my invention.
  • a slurry 10 of wood pulp and Water is fed from a flow box 11 onto a rapidly moving, endless wire screen 12.
  • the screen passes around end rolls 13, at least one of which is driven.
  • the slurry, supported by the wire screen passes o-ver table rolls 14 and suction boxes 15. Normal drainage and a vacuum maintained in the suction boxes draws orf a large portion of the water.
  • the matted tibers are then passed to drying rolls and sheet rolling equipment, designated generally at 16.
  • Suction boxes are composed of a wire-contacting cover 20 and a base member 21. Each suction box is connectedto a vacuum source by means such as suction lines 22.
  • the covers 20 are provided with a plurality of openings or perforations 23 whereby the Vacuum maintained in the box draws -water from the partially felted fibers.
  • each cover is made of a plurality of segments 24, as shown in FIGURE 2.
  • the wire-contacting surfaces of suction box covers made according to my invention are composed of a hard, dense ceramic material.
  • Such materials may be a self-bonded ceramic, such as high-densit self-bonded silicon carbide. It may be a ceramic-bonded ceramic, such as silicon nitride-bonded silicon carbide. Also suitable are the hard, dense, metalbonded ceramics, such as chromium-bonded alumina, and hard, dense impregnated ceramics, such as zirconiumV diboride impregnated with molybdenum disilicide.
  • hard,v dense ceramics which can be used include titanium carbide, boron carbide, tungsten carbide, zirconium carbide, titanium boride, zirconium boride, titanium nitride, zirconia, alumina, nitride-bonded silicon carbide, metal-bonded titanium carbide, and metal-bonded tungsten carbide.
  • suction box covers may be made entirely of the hard, dense ceramic material or,
  • a wire-contacting ceramic section may be bonded to a base plate 31.
  • a layer of hard, dense ceramic could be coated or sprayed on a base plate. Any common material such as steel may be used for the base plate. Preferably, it should be capable of receiving screws or other fastening means directly from the base of the box. Epoxy resins will form a good bond between the ceramic section and the base plate. If a solid ceramic cover is used, clamping means, such as shown in FIGURE 3, are preferable to direct connection between the box base 21 and the cover 20. I have shown a fixed clamp 3S fastened to one side of the box base and a movable clamp 36 mounted on the opposed side of the box base.
  • a suction box cover for a paper-making machine including a moving Wire screen, said cover comprising a screen contacting surface portion that is dense, hard, and wear-resistant and that will not retain grit and other foreign particles which cause abrading action on said screen, said surface portion being composed of an impermeable ceramic material having a hardness of at least 7 on Mohs scale.
  • an improved suction box comprising: a base member and a cover, said cover contacting the moving wire screen and having a dense, hard, wear-resistant, wire contacting surface that will not retain grit and other foreign particles which cause abrading action on said screen, said cover being composed of an impermeable ceramic material having a hardness of at least 7 on Mohs scale.
  • an improved suction box comprising: a base member and a cover, said cover comprising a base plate and a wirecontacting section bonded to said base plate, said section having a wire-contacting surface that is dense, hard, and wear-resistant and that will not retain grit and other foreign particles which cause abrading action on said screen and said wire-contacting section being composed of an impermeable ceramic material having a hardness of at least 7 on Mohs scale.
  • an improved suction box comprising: a base member and a cover, said cover comprising a plurality of perforated, wire-contacting segments each having a dense, hard, wear-resistant surface that will not retain grit and other foreign particles which cause abrading action on said screen and said wire-contacting segments consisting essentially of an impermeable ceramic material having a hardness of at least 7 on Mohs scale.
  • a suction box cover for a paper-making machine including a moving wire screen, said cover comprising a screen contacting surface portion that is dense, hard, and wear-resistant and that will not retain grit and other foreign particles which cause abrading action on said screen, said surface portion being composed of an impermeable ceramicY material of the character of self-bonded silicon carbide, and having a density of at least percent of its theoretical density and a hardness of at least 7 on Mohs scale.
  • an improved suction box comprising: a base member and a cover, said cover contacting the moving wire screen and having a dense, hard, wear-resistant, wire contacting surface that will not retain grit and other foreign particles which cause abrading action on said screen, said cover being composed of self-bonded silicon carbide, and having a density of at least 80 percent of its theoretical density and a hardness of at least 7 on Mohs scale.
  • an improved suction box comprising: a base member and a cover, said cover comprising a base plate and a wirecontacting section bonded to said base plate, said section having a wire-contacting surface that is dense, hard, and wear-resistant and that will not retain grit and other foreign particles which cause abrading action on said screen and said Wire-contacting section being composed of self-bonded silicon carbide, and having a density of at least 80 percent of its theoretical density and a hardness of at least 7 on Mohs scale.
  • an improved suction box comprising: a base member and a cover, said cover comprising a plurality of perforated, wire-contacting segments each having a dense, hard, wearresistant surface that will not retain grit and other foreign particles which cause abrading action on said screen and said ywire-contacting segments consisting essentially of selfbonded silicon carbide, and having a density of at least 80 percent of its theoretical density and a hardness of at least 7 on Mohs scale.

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  • Paper (AREA)
US3688A 1960-01-20 1960-01-20 Apparatus and process for the manufacture of paper Expired - Lifetime US3067816A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US3688A US3067816A (en) 1960-01-20 1960-01-20 Apparatus and process for the manufacture of paper
FI0079/61A FI40773B (hr) 1960-01-20 1961-01-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3688A US3067816A (en) 1960-01-20 1960-01-20 Apparatus and process for the manufacture of paper

Publications (1)

Publication Number Publication Date
US3067816A true US3067816A (en) 1962-12-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US3688A Expired - Lifetime US3067816A (en) 1960-01-20 1960-01-20 Apparatus and process for the manufacture of paper

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US (1) US3067816A (hr)
FI (1) FI40773B (hr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250671A (en) * 1965-05-07 1966-05-10 Beloit Corp Liquid flow control device having improved surface for operative engagement with relatively moving paper machine forming wire
US3262842A (en) * 1963-09-25 1966-07-26 Beloit Corp Suction box cover for a papermaking machine
US3351524A (en) * 1964-12-31 1967-11-07 Union Carbide Canada Ltd Device for promoting the removal of water from a paper-making pulp slurry
US3352749A (en) * 1966-04-07 1967-11-14 Norton Co Drainage control elements for paper machines
US3404066A (en) * 1965-02-17 1968-10-01 Union Carbide Corp Suction box cover
US3420736A (en) * 1965-09-01 1969-01-07 Carborundum Co Felt cleaner for paper making machine
US3436306A (en) * 1965-12-03 1969-04-01 Texas Instruments Inc Suction box cover
US3940308A (en) * 1974-06-07 1976-02-24 Appleton Specialty Products Inc. Suction pipe with quick disconnect cover
US4047993A (en) * 1975-11-13 1977-09-13 Heinrich Bartelmuss Method of making an abrasion-resistant plate
US4164442A (en) * 1975-11-13 1979-08-14 Heinrich Bartelmuss Abrasion-resistant plate
EP0010924A1 (en) * 1978-11-02 1980-05-14 Albany International Corp. Drainage device for papermaking and other similar machines, and method of making the device
US4940515A (en) * 1989-06-28 1990-07-10 Albany International Corp. Imbedded mesh in suction box cover
CN102517955A (zh) * 2011-12-19 2012-06-27 淄博爱普浆纸科技有限公司 造纸机用高耐磨、低静电SiC陶瓷面板及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US128469A (en) * 1872-07-02 Improvement in suction-boxes of machines for the manufacture of paper
US1644867A (en) * 1926-10-28 1927-10-11 Beloit Iron Works Suction box
US1703010A (en) * 1927-12-08 1929-02-19 Manson George James Suction box
US2215572A (en) * 1939-06-16 1940-09-24 American Brake Shoe & Foundry Brake element
US2602714A (en) * 1950-03-24 1952-07-08 Norton Co Bearing combination
US2637091A (en) * 1949-03-26 1953-05-05 Carborundum Co Bonded silicon carbide articles and method of making same
GB770832A (en) * 1954-07-12 1957-03-27 Morgan Crucible Co Improvements relating to paper-making machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US128469A (en) * 1872-07-02 Improvement in suction-boxes of machines for the manufacture of paper
US1644867A (en) * 1926-10-28 1927-10-11 Beloit Iron Works Suction box
US1703010A (en) * 1927-12-08 1929-02-19 Manson George James Suction box
US2215572A (en) * 1939-06-16 1940-09-24 American Brake Shoe & Foundry Brake element
US2637091A (en) * 1949-03-26 1953-05-05 Carborundum Co Bonded silicon carbide articles and method of making same
US2602714A (en) * 1950-03-24 1952-07-08 Norton Co Bearing combination
GB770832A (en) * 1954-07-12 1957-03-27 Morgan Crucible Co Improvements relating to paper-making machines

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262842A (en) * 1963-09-25 1966-07-26 Beloit Corp Suction box cover for a papermaking machine
US3351524A (en) * 1964-12-31 1967-11-07 Union Carbide Canada Ltd Device for promoting the removal of water from a paper-making pulp slurry
US3404066A (en) * 1965-02-17 1968-10-01 Union Carbide Corp Suction box cover
US3250671A (en) * 1965-05-07 1966-05-10 Beloit Corp Liquid flow control device having improved surface for operative engagement with relatively moving paper machine forming wire
US3420736A (en) * 1965-09-01 1969-01-07 Carborundum Co Felt cleaner for paper making machine
US3436306A (en) * 1965-12-03 1969-04-01 Texas Instruments Inc Suction box cover
US3352749A (en) * 1966-04-07 1967-11-14 Norton Co Drainage control elements for paper machines
US3940308A (en) * 1974-06-07 1976-02-24 Appleton Specialty Products Inc. Suction pipe with quick disconnect cover
US4047993A (en) * 1975-11-13 1977-09-13 Heinrich Bartelmuss Method of making an abrasion-resistant plate
US4164442A (en) * 1975-11-13 1979-08-14 Heinrich Bartelmuss Abrasion-resistant plate
EP0010924A1 (en) * 1978-11-02 1980-05-14 Albany International Corp. Drainage device for papermaking and other similar machines, and method of making the device
US4265706A (en) * 1978-11-02 1981-05-05 Albany International Corp. Drainage device with bonded wear surface and method of fabrication
US4940515A (en) * 1989-06-28 1990-07-10 Albany International Corp. Imbedded mesh in suction box cover
CN102517955A (zh) * 2011-12-19 2012-06-27 淄博爱普浆纸科技有限公司 造纸机用高耐磨、低静电SiC陶瓷面板及其制备方法
CN102517955B (zh) * 2011-12-19 2014-12-10 淄博爱普浆纸科技有限公司 造纸机用高耐磨、低静电SiC陶瓷面板及其制备方法

Also Published As

Publication number Publication date
FI40773B (hr) 1969-01-31

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