EP 0629739 B1 19990908 - Headbox for a paper machine
Title (en)
Headbox for a paper machine
Title (de)
Stoffauflauf für eine Papiermaschine
Title (fr)
Caisse de tête pour machine à papier
Publication
Application
Priority
DE 4320243 A 19930618
Abstract (en)
[origin: EP0629739A1] The headbox according to the invention contains two turbulence generators (2 and 3) located one after another, with an intermediate chamber (4) located between them. For influencing the flow condition in a desired manner, a fluid, for example dilution water, can be added into the region of one of these turbulence generators or of both. By means of the combination of two turbulence generators located one after another and an intermediate chamber, local mixing conditions are produced which are particularly suitable for the purpose striven for. In advantageous embodiments, the turbulence generator (2) lying upstream in the flow direction is significantly more effective than that following after the intermediate chamber (4). <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
D21F 1/02 (2013.01); D21F 1/022 (2013.01); D21F 1/026 (2013.01); D21F 1/06 (2013.01)
Designated contracting state (EPC)
AT DE FR GB SE
DOCDB simple family (publication)
EP 0629739 A1 19941221; EP 0629739 B1 19990908; EP 0629739 B2 20060419; AT E184336 T1 19990915; DE 4320243 A1 19941222; DE 4320243 C2 19960222; DE 59408713 D1 19991014
DOCDB simple family (application)
EP 94108842 A 19940609; AT 94108842 T 19940609; DE 4320243 A 19930618; DE 59408713 T 19940609