D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 7/00 (2006.01) D21F 9/00 (2006.01) D21F 11/04 (2006.01)
Patent
CA 2141278
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.
Egelhof Dieter
Großmann Udo
Meinecke Albrecht
Mccarthy Tetrault Llp
Voith Sulzer Papiermaschinen Gmbh
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