EP 0665330 B1 20000322 - Paper machine for making multi-ply paper
Title (en)
Paper machine for making multi-ply paper
Title (de)
Papiermaschine zur Herstellung mehrlagiger Papierbahnen
Title (fr)
Machine à papier pour la fabrication d'un papier à plusieurs couches
Publication
Application
Priority
DE 4402273 A 19940127
Abstract (en)
[origin: US5607555A] A paper machine forming section with two twin-wire sections for forming a multilayer paper web. Each twin wire web-forming unit consisting of a headbox, two wire loops arranged to define a common wire path for molding the web being formed in sandwich-like manner and drainage elements for each of the wire loops. The common wire path of each web-forming unit has a first section including a curved suction drainage element or roll in the first lower wire loop; a second section including opposing drainage ledges, wherein the drainage ledges are stationary on the upper side and the drainage ledges are developed resiliently pressable on the bottom side; the drainage ledges of the upper and lower sides are arranged staggered with respect to each other in the direction of travel of the wire, and at least the ledges of the upper side are developed with suction; and a third section which has at least one suction wire separating element on one side. The twin-wire forming units are so arranged that the same drainage elements are associated in each case with what will be the inner and outer sides respectively of the respective layer of the multilayer paper web.
IPC 1-7
IPC 8 full level
D21F 9/02 (2006.01); D21F 9/00 (2006.01); D21F 11/04 (2006.01)
CPC (source: EP US)
D21F 9/003 (2013.01 - EP US); D21F 9/006 (2013.01 - EP US); D21F 11/04 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
DE 4402273 A1 19940616; DE 4402273 C2 19951123; AT E191024 T1 20000415; CA 2141278 A1 19950728; CA 2141279 A1 19950728; CN 1119688 A 19960403; DE 59409232 D1 20000427; EP 0665330 A1 19950802; EP 0665330 B1 20000322; FI 113194 B 20040315; FI 950336 A0 19950126; FI 950336 A 19950728; JP H07258991 A 19951009; US 5607555 A 19970304; US 5635033 A 19970603
DOCDB simple family (application)
DE 4402273 A 19940127; AT 94120154 T 19941220; CA 2141278 A 19950127; CA 2141279 A 19950127; CN 95101682 A 19950123; DE 59409232 T 19941220; EP 94120154 A 19941220; FI 950336 A 19950126; JP 3172295 A 19950127; US 37926795 A 19950127; US 37993995 A 19950127