EP0854228A3 - Press section - Google Patents

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Publication number
EP0854228A3
EP0854228A3 EP97119262A EP97119262A EP0854228A3 EP 0854228 A3 EP0854228 A3 EP 0854228A3 EP 97119262 A EP97119262 A EP 97119262A EP 97119262 A EP97119262 A EP 97119262A EP 0854228 A3 EP0854228 A3 EP 0854228A3
Authority
EP
European Patent Office
Prior art keywords
zone
press
max
pressure
web
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
EP97119262A
Other languages
German (de)
French (fr)
Other versions
EP0854228A2 (en
EP0854228B9 (en
EP0854228B1 (en
Inventor
Hans Loser
Joachim Henssler
Karl Dr. Steiner
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.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
Voith Sulzer Papiertechnik Patent GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7815672&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0854228(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Sulzer Papiermaschinen GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0854228A2 publication Critical patent/EP0854228A2/en
Publication of EP0854228A3 publication Critical patent/EP0854228A3/en
Application granted granted Critical
Publication of EP0854228B1 publication Critical patent/EP0854228B1/en
Publication of EP0854228B9 publication Critical patent/EP0854228B9/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/06—Moisture and basic weight

Landscapes

  • Paper (AREA)

Abstract

Eine Pressenpartie einer Maschine zur Herstellung einer Faserstoffbahn, insbesondere Papier- und/oder Kartonbahn, umfaßt wenigstens einen in Bahnlaufrichtung verlängerten, eine Einlaufzone (a), eine Hauptpreßzone (b) und eine Auslaufzone (c) umfassenden Preßspalt. Der in Bahnlaufrichtung und damit in Richtung der Spaltlänge l auftretende Druckgradient dp / dl des in der Hauptpreßzone (a) des Preßspaltes erzeugten Druckes p ist in Abhängigkeit davon gewählt, ob die in den Preßspalt einlaufende Faserstoffbahn einerseits einen mittleren oder hohen Trockengehalt oder andererseits einen niedrigen Trockengehalt besitzt. Dieser Druckgradient dp / dl liegt bei einem mittleren oder hohen Trockengehalt der einlaufenden Faserstoffbahn in einem Bereich von etwa 0,01· p max cm bis etwa 0,08· p max cm . Vorzugsweise besitzt er einen Wert von etwa 0,04· p max cm , wobei pmax der vorgebbare maximale Druck am Ende der Hauptpreßzone (b) ist. Druck am Ende der Hauptpreßzone (b) ist.

Figure 00000001
A press section of a machine for producing a fibrous web, in particular paper and / or cardboard web, comprises at least one press nip which is elongated in the web running direction and comprises an inlet zone (a), a main press zone (b) and an outlet zone (c). The pressure gradient dp / dl occurring in the web running direction and thus in the direction of the nip length l of the pressure p generated in the main press zone (a) of the press nip is selected depending on whether the fibrous web entering the press nip has a medium or high dry content or a low one Possesses dryness. This pressure gradient dp / dl is in a range of approximately with a medium or high dry content of the incoming fibrous web 0.01 p Max cm up to about 0.08 p Max cm . It preferably has a value of approximately 0.04 p Max cm , where p max is the predeterminable maximum pressure at the end of the main pressing zone (b). Pressure at the end of the main pressing zone (b).
Figure 00000001
EP97119262A 1996-12-20 1997-11-04 Press section Revoked EP0854228B9 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19653505A DE19653505A1 (en) 1996-12-20 1996-12-20 Press section
DE19653505 1996-12-20

Publications (4)

Publication Number Publication Date
EP0854228A2 EP0854228A2 (en) 1998-07-22
EP0854228A3 true EP0854228A3 (en) 1999-05-26
EP0854228B1 EP0854228B1 (en) 2003-03-19
EP0854228B9 EP0854228B9 (en) 2005-04-06

Family

ID=7815672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119262A Revoked EP0854228B9 (en) 1996-12-20 1997-11-04 Press section

Country Status (3)

Country Link
US (1) US6120645A (en)
EP (1) EP0854228B9 (en)
DE (2) DE19653505A1 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004565A1 (en) 2011-02-23 2012-08-23 Voith Patent Gmbh Press section of a machine for producing a fibrous web
US11519132B2 (en) 2018-08-23 2022-12-06 Eastman Chemical Company Composition of matter in stock preparation zone of wet laid process
US11492755B2 (en) 2018-08-23 2022-11-08 Eastman Chemical Company Waste recycle composition
US11639579B2 (en) 2018-08-23 2023-05-02 Eastman Chemical Company Recycle pulp comprising cellulose acetate
US11299854B2 (en) 2018-08-23 2022-04-12 Eastman Chemical Company Paper product articles
US11339537B2 (en) 2018-08-23 2022-05-24 Eastman Chemical Company Paper bag
US11332888B2 (en) 2018-08-23 2022-05-17 Eastman Chemical Company Paper composition cellulose and cellulose ester for improved texturing
US11390991B2 (en) 2018-08-23 2022-07-19 Eastman Chemical Company Addition of cellulose esters to a paper mill without substantial modifications
WO2020041262A1 (en) * 2018-08-23 2020-02-27 Eastman Chemical Company Improved dewatering in paper making process and articles thereof
US11466408B2 (en) 2018-08-23 2022-10-11 Eastman Chemical Company Highly absorbent articles
US11441267B2 (en) 2018-08-23 2022-09-13 Eastman Chemical Company Refining to a desirable freeness
US11525215B2 (en) 2018-08-23 2022-12-13 Eastman Chemical Company Cellulose and cellulose ester film
US11332885B2 (en) 2018-08-23 2022-05-17 Eastman Chemical Company Water removal between wire and wet press of a paper mill process
US11421385B2 (en) 2018-08-23 2022-08-23 Eastman Chemical Company Soft wipe comprising cellulose acetate
US11421387B2 (en) 2018-08-23 2022-08-23 Eastman Chemical Company Tissue product comprising cellulose acetate
US11401660B2 (en) 2018-08-23 2022-08-02 Eastman Chemical Company Broke composition of matter
US11414791B2 (en) 2018-08-23 2022-08-16 Eastman Chemical Company Recycled deinked sheet articles
US11492757B2 (en) 2018-08-23 2022-11-08 Eastman Chemical Company Composition of matter in a post-refiner blend zone
US11230811B2 (en) 2018-08-23 2022-01-25 Eastman Chemical Company Recycle bale comprising cellulose ester
US11479919B2 (en) 2018-08-23 2022-10-25 Eastman Chemical Company Molded articles from a fiber slurry
US11492756B2 (en) 2018-08-23 2022-11-08 Eastman Chemical Company Paper press process with high hydrolic pressure
US11530516B2 (en) 2018-08-23 2022-12-20 Eastman Chemical Company Composition of matter in a pre-refiner blend zone
US11286619B2 (en) 2018-08-23 2022-03-29 Eastman Chemical Company Bale of virgin cellulose and cellulose ester
US11408128B2 (en) 2018-08-23 2022-08-09 Eastman Chemical Company Sheet with high sizing acceptance
US11306433B2 (en) 2018-08-23 2022-04-19 Eastman Chemical Company Composition of matter effluent from refiner of a wet laid process
US11414818B2 (en) 2018-08-23 2022-08-16 Eastman Chemical Company Dewatering in paper making process
US11313081B2 (en) 2018-08-23 2022-04-26 Eastman Chemical Company Beverage filtration article
US11390996B2 (en) 2018-08-23 2022-07-19 Eastman Chemical Company Elongated tubular articles from wet-laid webs
US11420784B2 (en) 2018-08-23 2022-08-23 Eastman Chemical Company Food packaging articles
US11512433B2 (en) 2018-08-23 2022-11-29 Eastman Chemical Company Composition of matter feed to a head box
US11401659B2 (en) 2018-08-23 2022-08-02 Eastman Chemical Company Process to produce a paper article comprising cellulose fibers and a staple fiber

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410172A1 (en) * 1983-03-23 1984-09-27 Valmet Oy, Helsinki LONG SPLIT PRESS OF A PAPER MACHINE
WO1989009690A1 (en) * 1988-04-13 1989-10-19 Miller Ray R High heat flux roll and press utilizing same
WO1991000389A1 (en) * 1989-06-23 1991-01-10 Beloit Corporation A heated extended nip press apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5047122A (en) * 1989-06-23 1991-09-10 Beloit Corporation Method for heated extended nip pressing
US5167768A (en) * 1991-11-07 1992-12-01 Beloit Corporation Wide nip web press and method using a press shoe with two pivots

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410172A1 (en) * 1983-03-23 1984-09-27 Valmet Oy, Helsinki LONG SPLIT PRESS OF A PAPER MACHINE
WO1989009690A1 (en) * 1988-04-13 1989-10-19 Miller Ray R High heat flux roll and press utilizing same
WO1991000389A1 (en) * 1989-06-23 1991-01-10 Beloit Corporation A heated extended nip press apparatus

Also Published As

Publication number Publication date
EP0854228A2 (en) 1998-07-22
DE19653505A1 (en) 1998-06-25
US6120645A (en) 2000-09-19
EP0854228B9 (en) 2005-04-06
DE59709565D1 (en) 2003-04-24
EP0854228B1 (en) 2003-03-19

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