Global Patent Index - EP 0711869 B1

EP 0711869 B1 20020327 - Multi-layer headbox

Title (en)

Multi-layer headbox

Title (de)

Mehrschichten-Stoffauflauf

Title (fr)

Caisse de tête à plusieurs couches

Publication

EP 0711869 B1 20020327 (DE)

Application

EP 95117555 A 19951108

Priority

DE 4440079 A 19941110

Abstract (en)

[origin: EP0711869A2] A multilayer breast box is for feeding at least two machine-wide pulp suspension currents to the forming section of a paper machine. It has a nozzle chamber defined by two current guide walls (1), which end at a machine-wide discharge gap, and by two side walls. The nozzle chamber contains at least one lamella (2) with the function of a partitioning which keeps the fibre suspension currents apart from each other in the discharge gap section. The lamella (2) comprises a main section, preferably made of carbon fibre-reinforced plastics, and a tip made of a rigid material. The tip takes the form of a strip which has a sharp edge and is integrated into the main section.

IPC 1-7

D21F 1/02; D21F 1/00; D21F 11/04

IPC 8 full level

D21F 1/00 (2006.01); D21F 1/02 (2006.01); D21F 9/00 (2006.01); D21F 11/04 (2006.01)

CPC (source: EP US)

D21F 1/02 (2013.01 - EP US); D21F 1/028 (2013.01 - EP US); D21F 9/006 (2013.01 - EP US); Y10S 162/10 (2013.01 - EP); Y10S 162/11 (2013.01 - EP)

Designated contracting state (EPC)

AT DE FR GB IT SE

DOCDB simple family (publication)

EP 0711869 A2 19960515; EP 0711869 A3 19970416; EP 0711869 B1 20020327; AT 215144 T 20020415; DE 4440079 A1 19960523; DE 4440079 C2 19971002; DE 59510123 D1 20020502; US 5645689 A 19970708

DOCDB simple family (application)

EP 95117555 A 19951108; AT 95117555 T 19951108; DE 4440079 A 19941110; DE 59510123 T 19951108; US 55771995 A 19951113