DE502009000133D1 - Method and device for treating a fibrous web - Google Patents

Method and device for treating a fibrous web

Info

Publication number
DE502009000133D1
DE502009000133D1 DE502009000133T DE502009000133T DE502009000133D1 DE 502009000133 D1 DE502009000133 D1 DE 502009000133D1 DE 502009000133 T DE502009000133 T DE 502009000133T DE 502009000133 T DE502009000133 T DE 502009000133T DE 502009000133 D1 DE502009000133 D1 DE 502009000133D1
Authority
DE
Germany
Prior art keywords
treatment path
path section
material web
fibrous material
bearing surfaces
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.)
Active
Application number
DE502009000133T
Other languages
German (de)
Inventor
Arved H Westerkamp
Benno Dr Bader
Robert Dr Hilbing
Joachim Hinz
Robert Koplin
Christian Naydowski
Joerg Dr Rheims
Rainer Dr Schmachtel
Martin Dr Staiger
Benjamin Holstein
Michael Kespe
Heimo Rud
Peter Prof Dr Eyerer
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 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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of DE502009000133D1 publication Critical patent/DE502009000133D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The method comprises guiding a fibrous material web (2) over a treatment path between first and second revolving bearing surfaces (4.1, 4.2), and clamping the fibrous material web in a first treatment path section (3.1) between the bearing surfaces. The bearing surfaces are moved apart from each other in a second treatment path section (3.2) within the treatment path to a predetermined distance, which is larger than the thickness of the fiber web in the first treatment path section. The bearing surfaces in the second treatment path section run parallel to the predetermined distance. The method comprises guiding a fibrous material web (2) over a treatment path between first and second revolving bearing surfaces (4.1, 4.2), and clamping the fibrous material web in a first treatment path section (3.1) between the bearing surfaces. The bearing surfaces are moved apart from each other in a second treatment path section (3.2) within the treatment path to a predetermined distance, which is larger than the thickness of the fiber web in the first treatment path section. The bearing surfaces in the second treatment path section run parallel to the predetermined distance. The first bearing surface is formed by the surface of strips. The first bearing surface in the second treatment path section is positively guided by guiding elements. The predetermined distance of the second treatment path section is adjusted over the guiding elements. The strip has a gripping element distributed over a total width. The gripping elements are temporarily connected to the guiding elements. An expansion additive ensures that the fibrous material web expands in the second treatment path section. A negative pressure above and/or below the fibrous material web is used as expansion additive and/or a chemical releasing an over pressure is used within the fibrous material web. A stabilizing agent ensures that the fibrous material web not collapses again in its initial thickness, which is present in the first treatment path section, after the second treatment path section. The chemical is used as the stabilizing agent and increases the viscosity of the material web and/or its gas content. An independent claim is included for a device for treating a running fibrous material web in a treatment path between bearing surfaces.
DE502009000133T 2008-04-07 2009-04-06 Method and device for treating a fibrous web Active DE502009000133D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008001023A DE102008001023A1 (en) 2008-04-07 2008-04-07 Method and device for treating a fibrous web

Publications (1)

Publication Number Publication Date
DE502009000133D1 true DE502009000133D1 (en) 2010-12-02

Family

ID=40679550

Family Applications (2)

Application Number Title Priority Date Filing Date
DE102008001023A Withdrawn DE102008001023A1 (en) 2008-04-07 2008-04-07 Method and device for treating a fibrous web
DE502009000133T Active DE502009000133D1 (en) 2008-04-07 2009-04-06 Method and device for treating a fibrous web

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE102008001023A Withdrawn DE102008001023A1 (en) 2008-04-07 2008-04-07 Method and device for treating a fibrous web

Country Status (3)

Country Link
EP (1) EP2108737B1 (en)
AT (1) ATE485422T1 (en)
DE (2) DE102008001023A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920204A1 (en) * 1988-10-31 1990-05-10 Escher Wyss Gmbh METHOD FOR SMOOTHING A PAPER OR CARDBOARD SHEET
FI102304B1 (en) 1997-04-02 1998-11-13 Valmet Corp Calendaring process and calendar for application of the process
CN100371529C (en) 2002-01-29 2008-02-27 梅特索纸业有限公司 Processing device and method of operating the device for processing a coated or uncoated fibrous web

Also Published As

Publication number Publication date
EP2108737B1 (en) 2010-10-20
ATE485422T1 (en) 2010-11-15
DE102008001023A1 (en) 2009-10-08
EP2108737A1 (en) 2009-10-14

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