EP 0055206 A1 19820630 - Press section for substantially equally pressing both sides of paper web.

Title (en)

Press section for substantially equally pressing both sides of paper web.

Title (de)

Pressenteil zum im wesentlichen gleichmässigen Pressen der beiden Seiten einer Papierbahn.

Title (fr)

Section de presse pour le pressage essentiellement uniforme des deux cÔtés d'une bande de papier.

Publication

EP 0055206 A1 19820630 (EN)

Application

EP 81630083 A 19811218

Priority

US 21765780 A 19801218

Abstract (en)

In a paper making machine dewatering press section substantially equal pressing and dewatering of both faces of a freshly felted paper sheet web is effected by running the web through first press roll means providing a double action first dewatering nip between corunning porous dewatering felts, and successively thereafter running the web through a four roll stack providing second, third and fourth nips. In the second nip the web is run in dewatering felt engagement with one face of the web, and the opposite face of the web is in direct press roll engagement in such nip. In the third nip both faces of the web are in direct engagement with the press rolls, and in the fourth nip a second dewatering felt runs in engagements with said opposite face of the web and said one face of the web is in direct press roll engagement. The web leaves the press section as a paper sheet having both faces substantially equally pressed and dewatered.

IPC 1-7

D21F 3/04

IPC 8 full level

D21F 1/48 (2006.01); D21F 3/04 (2006.01)

CPC (source: EP KR)

D21F 1/48 (2013.01 - KR); D21F 3/04 (2013.01 - EP)

Citation (search report)

DE 273783 C
GB 1381360 A 19750122 - VALMET OY
GB 697774 A 19530930 - RALPH CHALINOR HEYS
US 4188262 A 19800212 - KANKAANPAA MATTI [FI]
US 3198693 A 19650803 - JUSTUS EDGAR J
US 3268390 A 19660823 - ELY SR DONALD E
FR 2343858 A1 19771007 - NEYRPIC BMB [FR]

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0055206 A1 19820630; EP 0055206 B1 19850807; BR 8108279 A 19821005; DE 3171746 D1 19850912; ES 508018 A0 19830201; ES 8302824 A1 19830201; FI 79731 B 19891031; FI 79731 C 19900212; FI 813825 L 19820619; IN 154483 B 19841103; JP S57121695 A 19820729; JP S5922838 B2 19840529; KR 830007957 A 19831109; KR 850001609 B1 19851024

DOCDB simple family (application)

EP 81630083 A 19811218; BR 8108279 A 19811217; DE 3171746 T 19811218; ES 508018 A 19811216; FI 813825 A 19811130; IN 1394CA1981 A 19811207; JP 19462881 A 19811204; KR 810004991 A 19811218