EP 1315861 A1 20030604 - GROOVED LEAD BLADE FOR A PAPERMAKING MACHINE
Title (en)
GROOVED LEAD BLADE FOR A PAPERMAKING MACHINE
Title (de)
GERILLTE LEITSCHAUFEL FÜR EINE PAPIERMASCHINE
Title (fr)
LAME DE CINTRAGE RAINUREE
Publication
Application
Priority
- CA 0101260 W 20010905
- GB 0021767 A 20000905
Abstract (en)
[origin: WO0220899A1] A vented lead blade (5) for use in a paper making machine located so that the stock jet (9) impinges the forming fabric (3) at, or near to, its trailing edge (14). The vented lead blade serves to bend the forming fabric before it enters the forming section, and to vent at least a substantial proportion of any air (8) which becomes trapped in the wedge shaped space between the surface of the forming fabric and the surface of the stock jet, together with at least some of any liquid carried with the air. The vented lead blade of this invention thus enables the forming fabric to be positioned so that the angle of impingement of the stock jet onto the forming fabric can be minimized to become substantially zero. It also makes it possible to reduce the unsupported length of the stock jet. The vented lead blade of this invention can be used in both an open surface forming section with one forming fabric, or in the forming section of a two fabric paper making machine.
IPC 1-7
IPC 8 full level
D21F 1/48 (2006.01); D21F 9/00 (2006.01); D21F 9/02 (2006.01)
CPC (source: EP US)
D21F 1/483 (2013.01 - EP US); D21F 9/003 (2013.01 - EP US); D21F 9/02 (2013.01 - EP US)
Citation (search report)
See references of WO 0220899A1
Designated contracting state (EPC)
DE FI
DOCDB simple family (publication)
WO 0220899 A1 20020314; AU 9353201 A 20020322; CA 2356804 A1 20020305; CA 2356804 C 20080311; DE 60124739 D1 20070104; DE 60124739 T2 20070301; EP 1315861 A1 20030604; EP 1315861 B1 20061122; GB 0021767 D0 20001018; US 2002046821 A1 20020425
DOCDB simple family (application)
CA 0101260 W 20010905; AU 9353201 A 20010905; CA 2356804 A 20010904; DE 60124739 T 20010905; EP 01973866 A 20010905; GB 0021767 A 20000905; US 94264901 A 20010831