Title:
多層ウェブ形成部
Document Type and Number:
Japanese Patent JP2007522358
Kind Code:
A
Abstract:
A multi-layer web formation section has at least two successive wire units (300, 310). First and second headboxes (100, 110) supply pulp suspension jets to the forward end of the first wire unit (300) and the second wire unit respectively to form a first partial web (W1) and a second partial web (W2) which are joined at a joint (N1) between the second wire unit (310) and a bottom wire (11). A first non-pulsating dewatering zone (Z1b) in the forward end of a two-wire stretch of the second wire unit (310) is formed by a fixed formation shoe (200b) having a curved cap (201) placed against one side, having openings with an under-pressure applied. A two-wire stretch of the second wire unit (310) has a second pulsating dewatering zone (Z2b), formed by fixed dewatering lists (210b) in the cross machine direction with gaps (220b) therebetween with an under-pressure (Pb) applied.
Inventors:
Raisanen, Cali
Pocolinen, Antti
Pocolinen, Antti
Application Number:
JP2006552648A
Publication Date:
August 09, 2007
Filing Date:
February 11, 2005
Export Citation:
Assignee:
Metso Paper Inc.
International Classes:
D21F9/02; D21F9/00; D21F11/04
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Hitoshi Nagasaka
Shinsuke Onuki
Tadashige Ito
Hitoshi Nagasaka