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SE8702895D0 - FORMERS FOR SHAPING A PAPER PATH - Google Patents

FORMERS FOR SHAPING A PAPER PATH

Info

Publication number
SE8702895D0
SE8702895D0 SE8702895A SE8702895A SE8702895D0 SE 8702895 D0 SE8702895 D0 SE 8702895D0 SE 8702895 A SE8702895 A SE 8702895A SE 8702895 A SE8702895 A SE 8702895A SE 8702895 D0 SE8702895 D0 SE 8702895D0
Authority
SE
Sweden
Prior art keywords
forming rolls
suitably
larger
rolls
forming
Prior art date
Application number
SE8702895A
Other languages
Swedish (sv)
Other versions
SE8702895L (en
SE458212B (en
Inventor
E A Nykopp
Original Assignee
Valmet Paper Machinery Inc
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 Valmet Paper Machinery Inc filed Critical Valmet Paper Machinery Inc
Priority to SE8702895A priority Critical patent/SE458212B/en
Publication of SE8702895D0 publication Critical patent/SE8702895D0/en
Priority to EP88201361A priority patent/EP0304098A1/en
Priority to FI883328A priority patent/FI883328A/en
Priority to JP17687788A priority patent/JPS6433296A/en
Publication of SE8702895L publication Critical patent/SE8702895L/en
Publication of SE458212B publication Critical patent/SE458212B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type

Landscapes

  • Paper (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

It has been found that a hybrid former having two open-surfaced forming rolls (5 and 7) in series after each other can give a paper web of excellent formation. To increase the drainage capacity without waiving the requirements for good formation, the sum of the wrapping angles (alpha and beta) of the fabrics (1 and 3) on the forming rolls (5 and 7) is larger than 165 DEG , the distance between the forming rolls (5 and 7) being smaller than about 0.1 D, where D is the diameter of the second forming roll (7) in the machine direction, and the free fabric length between the rolls (5 and 7) being between 0.1 m and 0.6 m. The forming rolls (5 and 7) may be located at substantially equal levels or substantially on top of each other. In the first case the first wrapping angle (alpha) preferably is larger than about 60 DEG , suitably 60 DEG - 70 DEG , and the second one (beta) preferably is larger than about 135 DEG , suitably 140 DEG - 170 DEG .In addition, in both cases the distance between the forming rolls (5 and 7) preferably is smaller than 0.1 m, suitably on the order of 0.06 m, and the free fabric length between the forming rolls (5 and 7) preferably is 0.3 - 0.4 m. The former is especially suited for the production of thick multilayer paper.
SE8702895A 1987-07-17 1987-07-17 FORMERS FORMING A PAPER PATH SE458212B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8702895A SE458212B (en) 1987-07-17 1987-07-17 FORMERS FORMING A PAPER PATH
EP88201361A EP0304098A1 (en) 1987-07-17 1988-06-30 Former for forming a paper web
FI883328A FI883328A (en) 1987-07-17 1988-07-13 FORMARE FOER FORMNING AV EN PAPPERSBANA.
JP17687788A JPS6433296A (en) 1987-07-17 1988-07-15 Molding machine for molding paper web

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8702895A SE458212B (en) 1987-07-17 1987-07-17 FORMERS FORMING A PAPER PATH

Publications (3)

Publication Number Publication Date
SE8702895D0 true SE8702895D0 (en) 1987-07-17
SE8702895L SE8702895L (en) 1989-01-18
SE458212B SE458212B (en) 1989-03-06

Family

ID=20369146

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8702895A SE458212B (en) 1987-07-17 1987-07-17 FORMERS FORMING A PAPER PATH

Country Status (4)

Country Link
EP (1) EP0304098A1 (en)
JP (1) JPS6433296A (en)
FI (1) FI883328A (en)
SE (1) SE458212B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443874C2 (en) * 1994-12-09 1996-10-31 Voith Sulzer Papiermasch Gmbh Twin-wire gap former for paper production
KR20030002096A (en) * 2001-06-30 2003-01-08 전진화 Paper-manufacturing system
WO2006059580A1 (en) 2004-11-30 2006-06-08 Asahi Glass Company, Limited Mold and process for production of substrates having transferred micropatterns thereon
DE102010041730A1 (en) * 2010-09-30 2012-04-05 Voith Patent Gmbh Machine for the dewatering of pulp
WO2013143713A1 (en) * 2012-03-28 2013-10-03 Voith Patent Gmbh Machine for dewatering pulp
WO2019043608A1 (en) * 2017-09-01 2019-03-07 Stora Enso Oyj A method to produce a paperboard, a paperboard and a corrugated board

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2023520A1 (en) * 1970-05-14 1971-12-02 J M Voith GmbH, 7920 Heidenheim Twin wire paper machine
AT379622B (en) * 1980-11-26 1986-02-10 Escher Wyss Gmbh PAPER MACHINE WITH TWO MOVABLE WATERPROOF DRAINAGE BELTS, e.g. SEVEN
DE3261499D1 (en) * 1981-02-28 1985-01-24 Voith Gmbh J M Device for continuously dehydrating a fiber web
CA1157302A (en) * 1981-08-07 1983-11-22 Alexander Malashenko Twin-wire web forming section
AT375695B (en) * 1982-06-15 1984-08-27 Escher Wyss Gmbh DOUBLE SCREEN PAPER
JPS6170091A (en) * 1984-09-12 1986-04-10 三菱重工業株式会社 Apparatus for uniformly dispersing paper stock

Also Published As

Publication number Publication date
SE8702895L (en) 1989-01-18
FI883328A0 (en) 1988-07-13
FI883328A (en) 1989-01-18
JPS6433296A (en) 1989-02-03
EP0304098A1 (en) 1989-02-22
SE458212B (en) 1989-03-06

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