SE8801979L - PROCEDURE AND DEVICE IN THE CYLINDER DRYER OF A PAPER MACHINE, IF ANY DOUBLE WOVEN WRAP IS USED - Google Patents

PROCEDURE AND DEVICE IN THE CYLINDER DRYER OF A PAPER MACHINE, IF ANY DOUBLE WOVEN WRAP IS USED

Info

Publication number
SE8801979L
SE8801979L SE8801979A SE8801979A SE8801979L SE 8801979 L SE8801979 L SE 8801979L SE 8801979 A SE8801979 A SE 8801979A SE 8801979 A SE8801979 A SE 8801979A SE 8801979 L SE8801979 L SE 8801979L
Authority
SE
Sweden
Prior art keywords
web
negative pressure
air
drying cylinder
region
Prior art date
Application number
SE8801979A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8801979D0 (en
SE467626B (en
Inventor
P Eskelinen
H Kokkala
R Virta
V Vuorinen
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
Publication of SE8801979D0 publication Critical patent/SE8801979D0/en
Publication of SE8801979L publication Critical patent/SE8801979L/en
Publication of SE467626B publication Critical patent/SE467626B/en

Links

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
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

PURPOSE: To increase the level of a negative pressure and improve the tension of a web at a region where the web is released from a drying cylinder, by disposing an air-jetting means having a special structure in the paper web- releasing region. CONSTITUTION: An air-jetting device 10 is disposed in a region where a made web (wet paper) WP is released together with a metal net 40 from a drying cylinder 41, in order to press the web WP to the drying cylinder 41 by the use of the wire cloth 40 and then transfer the web WP to another drying cylinder 32. A negative pressure is thus formed in the releasing region to improve the release of the web. The air-jetting device 10 is formed in such a structure that negative pressure regions A-, N- are flat L in the jetting direction, that a passage R formed between the outer surface of the wire cloth 40 disposed on the cylinder 41 and the wall surface 14 of the air-jetting device 10 is enough long, and that the flow of a boundary layer following the metal net is returned in the direction opposite to the travel direction of the wire cloth 40 to originally form a proper level of negative pressure in a space formed on the rear side of the passage R.
SE8801979A 1987-06-17 1988-05-27 PROCEDURE AND DEVICE IN THE CYLINDER DRYER OF A PAPER MACHINE, IF ANY DOUBLE WOVEN WRAP IS USED SE467626B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI872691A FI80103C (en) 1987-06-17 1987-06-17 Method and apparatus in the cylinder dryer of a paper machine, in which a double-weave pull is used

Publications (3)

Publication Number Publication Date
SE8801979D0 SE8801979D0 (en) 1988-05-27
SE8801979L true SE8801979L (en) 1988-12-18
SE467626B SE467626B (en) 1992-08-17

Family

ID=8524682

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8801979A SE467626B (en) 1987-06-17 1988-05-27 PROCEDURE AND DEVICE IN THE CYLINDER DRYER OF A PAPER MACHINE, IF ANY DOUBLE WOVEN WRAP IS USED

Country Status (5)

Country Link
JP (1) JP2631226B2 (en)
CA (1) CA1336535C (en)
DE (1) DE3818600A1 (en)
FI (1) FI80103C (en)
SE (1) SE467626B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI82095C (en) * 1987-09-29 1991-01-10 Valmet Paper Machinery Inc FOERFARANDE OCH ANORDNING I CYLINDERTORKEN AV EN PAPPERSMASKIN.
US4891891A (en) * 1988-10-11 1990-01-09 Beloit Corporation Dryer section apparatus and method
DE3914761A1 (en) * 1989-03-08 1990-11-15 Voith Gmbh J M GUIDE ROLLER FOR A POROUS BAND, FOR EXAMPLE FOR A DRY SCREEN OF A PAPER MACHINE
FI92420C (en) * 1992-04-10 1994-11-10 Valmet Paper Machinery Inc Stabilizer for a paper web in a cylinder group contained in the drying portion of a paper machine
JPH06185142A (en) * 1992-12-16 1994-07-05 Sekisui Chem Co Ltd Wall panel connecting structure
DE4404726C2 (en) * 1993-03-11 1996-04-25 Voith Gmbh J M Pocket ventilation in a two-wire cylinder dryer
SE9400728L (en) * 1993-03-11 1994-09-12 Voith Gmbh J M Cylinder dryer with two wires
FI96332C (en) * 1993-04-05 1996-06-10 Valmet Paper Machinery Inc A method for ventilating the pocket spaces of a paper machine multi-cylinder dryer and a device for ventilating the pocket spaces of a paper machine multi-cylinder dryer
FI93875C (en) * 1994-02-17 1995-06-12 Valmet Paper Machinery Inc Procedure for drying a paper web and drying part in a paper machine
US5661911A (en) * 1994-02-17 1997-09-02 Valmet Corporation Dryer section of a paper machine
FI98387C (en) 1995-02-01 1997-06-10 Valmet Corp Method for the production of surface-treated paper, in particular fine paper, and the dry end of a paper machine
US5840101A (en) * 1995-05-27 1998-11-24 Wet Tex Maschinenbau Gmbh Method and apparatus for treatment of an endless web of material with vacuum
US6076280A (en) * 1995-07-26 2000-06-20 Voith Sulzer Papiermaschinen Gmbh Method and device for drying a fiber web
DE19527289C2 (en) * 1995-07-26 2000-09-14 Voith Sulzer Papiertech Patent Pocket ventilation method and an air guide box for performing the method in a two-wire dryer section of a papermaking machine
CA2190563C (en) * 1996-11-18 1999-10-26 Ralph Mancini Device and method to stabilize sheet between press section and dryer section of a paper-making machine
US6260287B1 (en) 1997-08-08 2001-07-17 Peter Walker Wet web stability method and apparatus
FI20022231A0 (en) 2002-12-19 2002-12-19 Metso Paper Inc Arrangement for tissue stabilization of the web

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753298A (en) * 1971-12-17 1973-08-21 Beloit Corp Web dryer
DE3236576C2 (en) * 1982-10-02 1988-03-24 J.M. Voith Gmbh, 7920 Heidenheim Air guide box for the dryer section of a paper machine
FI73259C (en) * 1985-09-13 1987-09-10 Valmet Oy Method and apparatus in the cylinder dryer of a paper machine

Also Published As

Publication number Publication date
CA1336535C (en) 1995-08-08
SE8801979D0 (en) 1988-05-27
JP2631226B2 (en) 1997-07-16
DE3818600A1 (en) 1988-12-29
JPS6414392A (en) 1989-01-18
FI80103C (en) 1990-04-10
FI872691A (en) 1988-12-18
FI872691A0 (en) 1987-06-17
FI80103B (en) 1989-12-29
DE3818600C2 (en) 1991-09-19
SE467626B (en) 1992-08-17

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