EP 0195807 B1 19891018 - HEADBOX SYSTEM FOR A PAPER MACHINE
Title (en)
HEADBOX SYSTEM FOR A PAPER MACHINE
Publication
Application
Priority
- CH 91585 A 19850228
- CH 448984 A 19840919
- EP 8500473 W 19850916
Abstract (en)
[origin: WO8601844A1] In a headbox system for a paper machine with an adjustable distribution of the pulp over the width of the web the flow in the delivery gap (8) is controlled in such a way that, over the width of the web, also the distribution of the fibres in respect of fibre orientation and quantity has a desired profile. For this, the flow of the pulp suspension is so controlled that in the event of a change on the pulp distribution over the width of the web the horizontal component of the flow direction in the delivery gap (8) remains, at all places, always in the direction of the machine, and thus transverse flows are avoided and the flow speed in the delivery gap (8) has a preset profile.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
D21F 1/02 (2013.01 - EP US); D21F 1/022 (2013.01 - EP US); D21F 1/024 (2013.01 - EP US); D21F 1/026 (2013.01 - EP US); D21F 1/028 (2013.01 - EP US); D21F 1/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE GB IT SE
DOCDB simple family (publication)
WO 8601844 A1 19860327; DE 3514554 A1 19860327; DE 3514554 C2 19940616; DE 3514554 C3 19980108; EP 0195807 A1 19861001; EP 0195807 B1 19891018; EP 0195807 B2 19940713; FI 861944 A0 19860509; FI 861944 A 19860509; FI 90359 B 19931015; US 4888094 A 19891219; US 4897158 A 19900130; US 4898643 A 19900206
DOCDB simple family (application)
EP 8500473 W 19850916; DE 3514554 A 19850423; EP 85904806 A 19850916; FI 861944 A 19860509; US 20649688 A 19880613; US 27234088 A 19881117; US 87319686 A 19860519