Global Patent Index - EP 2264243 A1

EP 2264243 A1 20101222 - Method and device for treating a strip of fibrous material in a long nip press unit

Title (en)

Method and device for treating a strip of fibrous material in a long nip press unit

Title (de)

Verfahren und Vorrichtung zur Behandlung einer Faserstoffbahn in einer Langnip-Presseinheit

Title (fr)

Procédé et dispositif de traitement d'une bande de matière fibreuse dans une unité de presse à longue ligne de contact

Publication

EP 2264243 A1 20101222 (DE)

Application

EP 10004733 A 20100505

Priority

AT 7812009 A 20090519

Abstract (en)

The press arrangement comprises transferring a fibrous material web to a long nip press unit (29) through an extended press nip (26), where the long nip press unit has a press roll (24) with a rotating press jacket (25) and a mating roll (23). The fibrous material web is transferred to a transfer element in connection to the extended press nip on the press jacket of the press roll, where the transfer element receives the fibrous material web. The rotating press jacket consists of a carrier and an elastically compressible polymer coating, which is turned to the fibrous material web. The press arrangement comprises transferring a fibrous material web to a long nip press unit (29) through an extended press nip (26), where the long nip press unit has a press roll (24) with a rotating press jacket (25) and a mating roll (23). The fibrous material web is transferred to a transfer element in connection to the extended press nip on the press jacket of the press roll, where the transfer element receives the fibrous material web. The rotating press jacket consists of a carrier and an elastically compressible polymer coating, which is turned to the fibrous material web and has a hardness of 50-97 Shore-A, where the surface of the polymer coating contacting the fibrous material web has a reversible pressure-dependent roughness (R z) of 2-80 mu m in an unloaded state measured according to ISO 4287 and has a roughness (R z) of 0-20 mu m in a loaded state with a linear load of 20-600 kN/m. The rotating press jacket is impermeable. The polymer coating contains a polymer composition, and particulate filler material, which contains kaolin-clay, polymer material or stainless steel. The polymer coating completely encloses the carrier. An independent claim is included for a method for treating a fibrous material web in a paper or cardboard machine.

Abstract (de)

Die Erfindung betrifft ein Verfahren zur Behandlung einer Faserstoffbahn (9) in einer Papier- oder Kartonmaschine in einer Langnip-Presseinheit (29) mit einer Presswalze (24), die einen rotierenden Pressmantel (25) aufweist und einer Gegenwalze (23), wobei die Faserstoffbahn (9) in einem verlängerten Pressspalt (26) zwischen der Gegenwalze (23) und dem Pressmantel (25) der Presswalze (24) entwässert wird. Erfindungsgemäß wird die Faserstoffbahn (9) nach dem verlängerten Pressspalt (26) auf dem rotierenden Pressmantel (25) der Presswalze (24) zu einem Transferbereich (30), in dem die Faserstoffbahn (9) vom Pressmantel (25) auf ein Transferelement (31, 27) übergeben wird, geführt. Die Erfindung betrifft auch eine Pressanordnung mit der das erfindungsgemäße Verfahren durchgeführt wird.

IPC 8 full level

D21F 11/00 (2006.01); D21F 3/02 (2006.01); D21F 3/04 (2006.01)

CPC (source: EP US)

D21F 3/0227 (2013.01 - EP US); D21F 3/045 (2013.01 - EP US); D21F 11/006 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

BA ME RS

DOCDB simple family (publication)

EP 2264243 A1 20101222; EP 2264243 B1 20120314; AT 508305 A2 20101215; AT 508305 A3 20130315; AT 508331 A1 20101215; AT 508331 B1 20110515; AT E549456 T1 20120315; CA 2703265 A1 20101119; CA 2703265 C 20160823; CN 101892605 A 20101124; CN 101892605 B 20150114; CN 102428230 A 20120425; EP 2432932 A2 20120328; ES 2384090 T3 20120629; PL 2264243 T3 20120831; US 2010300635 A1 20101202; US 2012055644 A1 20120308; US 8349138 B2 20130108; WO 2010132903 A2 20101125; WO 2010132903 A3 20110106

DOCDB simple family (application)

EP 10004733 A 20100505; AT 10004733 T 20100505; AT 2010000097 W 20100409; AT 5712010 A 20100409; AT 7812009 A 20090519; CA 2703265 A 20100505; CN 201010186446 A 20100519; CN 201080021872 A 20100409; EP 10717020 A 20100409; ES 10004733 T 20100505; PL 10004733 T 20100505; US 201013261014 A 20100409; US 80054710 A 20100518