EP0346659A2 - Papiermaschine, in welcher die Papierbahn unterstützt wird in der Zone zwischen Press- und Trockenpartie - Google Patents

Papiermaschine, in welcher die Papierbahn unterstützt wird in der Zone zwischen Press- und Trockenpartie Download PDF

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Publication number
EP0346659A2
EP0346659A2 EP89109322A EP89109322A EP0346659A2 EP 0346659 A2 EP0346659 A2 EP 0346659A2 EP 89109322 A EP89109322 A EP 89109322A EP 89109322 A EP89109322 A EP 89109322A EP 0346659 A2 EP0346659 A2 EP 0346659A2
Authority
EP
European Patent Office
Prior art keywords
felt
dryer
web
rolls
press
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.)
Granted
Application number
EP89109322A
Other languages
English (en)
French (fr)
Other versions
EP0346659A3 (de
EP0346659B1 (de
Inventor
Thomas G. Gulya
David R. Turner
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.)
Appleton Mills
Original Assignee
Appleton Mills
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 Appleton Mills filed Critical Appleton Mills
Priority to AT89109322T priority Critical patent/ATE92986T1/de
Publication of EP0346659A2 publication Critical patent/EP0346659A2/de
Publication of EP0346659A3 publication Critical patent/EP0346659A3/de
Application granted granted Critical
Publication of EP0346659B1 publication Critical patent/EP0346659B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F2/00—Transferring continuous webs from wet ends to press sections
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof

Definitions

  • the conventional papermaking machine includes a press section having one or more pairs of cooperating press rolls and the wet paper web is supported on a papermaker's felt as it passes through the nip between the cooperating rolls, thereby extracting water from the web.
  • the paper web After leaving the press section, the paper web is transferred to the dryer section which can con­sist of a plurality of heated dryer rolls. The paper web passes sequentially around the dryer rolls to remove further moisture from the paper.
  • Sag in the draw between the press section and the dryer section can be minimized by increasing the tension on the paper web, but an increase in tension will correspondingly tend to stretch the paper web and increase the tendency for breakage.
  • the invention is directed to a papermaking machine in which the wet paper web is supported by the press section felt as it is transferred from the press section to the dryer section of the machine, thereby preventing sagging and possible breakage of the web.
  • the press section includes a pair of cooperating press rolls and an endless papermaker's felt supports the paper web as it passes between the press rolls to extract water from the wet web.
  • the papermaking machine also includes a dryer section consisting of a group of heated dryer rolls, and the press section felt travels from the press rolls of the press section and passes around at least one of the dryer rolls, so that the felt acts to support the wet paper web in the span or draw between the press section and the dryer section.
  • the drawing is a schematic representation of a portion of a papermaking machine incorporating the invention.
  • the drawing is a schematic representation of a portion of a paper making machine including a press section 1 and a dryer section 2.
  • Press section 1 includes a pair of cooperating press rolls 3 and 4 and a wet paper web 5 is supported by a papermaker's felt 6 as it passes between through the nip between the press rolls 3 and 4.
  • the paper web can be any type of paper, preferably heavier weight paper, such as liner board, newsprint, writing paper, or the like.
  • the papermaker's felt 6 is endless in config­uration and can consist of natural fibers, synthetic fibers, or a combination thereof.
  • the particular con­struction or composition of the felt is not critical to the invention.
  • Felt 6 is supported in its endless travel by a plurality of idler rolls, indicated by 7A-7I.
  • the felt 6 passes around a tensioning or stretch roll 8, which is located between the rolls 7F and 7G.
  • Roll 8 operates in a conventional manner to provide the desired tension on the felt 6.
  • Dryer section 2 includes a plurality of con­ventional heated dryer rolls, three of which are shown in the drawing, and indicated by 9, 10 and 11.
  • the dryer section may include up to 10 or more rolls which are steam heated to a temperature in the range of 150°F to 280°F.
  • the temperature of the rolls in the group may be varied, with the highest temperature being located at the downstream end of the dryer section.
  • the felt 6 from the press section is passed around at least one of the dryer rolls in the dryer section. As illustrated, the felt is passed around dryer roll 9 and thus supports the paper web in the draw between the press rolls 3,4 and the dryer roll 9.
  • the web 5 is located on the outside of felt 6 as it passes around dryer roll 9 and the web then travels around roll 10 and 11.
  • a conven­tional dryer fabric 12 is mounted for endless travel in the dryer section and as shown, travels around a pair of idler rolls 13.
  • the dryer fabric 12 operates in a conventional manner to support the paper web against the heated dryer rolls to aid in removal of moisture from the web.
  • the felt 6 being located between the dryer roll 9 and the web 5
  • the paper web may be sandwiched between the felt and the dryer roll.
  • the felt 6 from the press sec­tion can travel around a plurality of rolls in the dryer section.
  • the position and number of the idler rolls 7 in the press section is not critical and various paths of travel for the felt are contemplated depending upon the requirements of the papermaking machine.

Landscapes

  • Paper (AREA)
  • Advancing Webs (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Drying Of Solid Materials (AREA)
EP89109322A 1988-06-13 1989-05-24 Papiermaschine, in welcher die Papierbahn unterstützt wird in der Zone zwischen Press- und Trockenpartie Expired - Lifetime EP0346659B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89109322T ATE92986T1 (de) 1988-06-13 1989-05-24 Papiermaschine, in welcher die papierbahn unterstuetzt wird in der zone zwischen pressund trockenpartie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20573688A 1988-06-13 1988-06-13
US205736 1988-06-13

Publications (3)

Publication Number Publication Date
EP0346659A2 true EP0346659A2 (de) 1989-12-20
EP0346659A3 EP0346659A3 (de) 1991-05-08
EP0346659B1 EP0346659B1 (de) 1993-08-11

Family

ID=22763436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109322A Expired - Lifetime EP0346659B1 (de) 1988-06-13 1989-05-24 Papiermaschine, in welcher die Papierbahn unterstützt wird in der Zone zwischen Press- und Trockenpartie

Country Status (9)

Country Link
EP (1) EP0346659B1 (de)
JP (1) JPH0226993A (de)
AT (1) ATE92986T1 (de)
AU (1) AU619302B2 (de)
CA (1) CA1337236C (de)
DE (1) DE68908287T2 (de)
ES (1) ES2043949T3 (de)
FI (1) FI92847C (de)
NO (1) NO892405L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004331C1 (de) * 1990-02-13 1991-04-18 J.M. Voith Gmbh, 7920 Heidenheim, De
EP0478825A1 (de) * 1989-10-02 1992-04-08 Appleton Mills Papiermaschine, in welcher die Papierbahn unterstützt wird in der Zone zwischen Press- und Trockenpartie

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR359419A (fr) * 1905-01-21 1906-03-26 Eugene Armengaud Aine Perfectionnement à la fabrication du papier à la machine plate
GB481190A (en) * 1936-05-20 1938-03-07 Beloit Iron Works Felt arrangements for horizontal press roll assemblies of paper-making machines
US2443352A (en) * 1944-03-11 1948-06-15 Boloit Iron Works Suction press section for paper machines
US2786398A (en) * 1952-05-01 1957-03-26 Sprague Electric Co Apparatus and process for producing an extremely thin paper web
FI812060L (fi) * 1980-07-02 1982-01-03 Black Clawson Int Foerfarande och anordning foer framstaellning av papper och kartong
US4483745A (en) * 1982-09-29 1984-11-20 Beloit Corporation Method and apparatus of sheet transfer using a nonporous smooth surfaced belt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478825A1 (de) * 1989-10-02 1992-04-08 Appleton Mills Papiermaschine, in welcher die Papierbahn unterstützt wird in der Zone zwischen Press- und Trockenpartie
DE4004331C1 (de) * 1990-02-13 1991-04-18 J.M. Voith Gmbh, 7920 Heidenheim, De
WO1991012370A1 (de) * 1990-02-13 1991-08-22 J.M. Voith Gmbh Anordnung zum überführen einer bahn von der pressen- zur trockenpartie einer papiermaschine
US5169501A (en) * 1990-02-13 1992-12-08 J.M. Voith Gmbh Arrangement for transferring a web from the press section to the dryer section of a paper machine

Also Published As

Publication number Publication date
FI892860L (fi) 1989-12-14
ATE92986T1 (de) 1993-08-15
NO892405D0 (no) 1989-06-12
AU619302B2 (en) 1992-01-23
DE68908287T2 (de) 1993-11-25
CA1337236C (en) 1995-10-10
AU3614289A (en) 1989-12-14
EP0346659A3 (de) 1991-05-08
FI92847C (fi) 1995-01-10
FI92847B (fi) 1994-09-30
ES2043949T3 (es) 1994-01-01
EP0346659B1 (de) 1993-08-11
NO892405L (no) 1989-12-14
FI892860A0 (fi) 1989-06-12
JPH0226993A (ja) 1990-01-29
DE68908287D1 (de) 1993-09-16

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