Global Patent Index - EP 1479817 A3

EP 1479817 A3 20050907 - Web guiding device

Title (en)

Web guiding device

Title (de)

Bahnführungseinrichtung

Title (fr)

Dispositif pour guider un matériau en bande

Publication

EP 1479817 A3 20050907 (DE)

Application

EP 04101976 A 20040507

Priority

DE 10322525 A 20030519

Abstract (en)

[origin: EP1479817A2] A papermaking assembly surrenders a moving web of wet paper or carton to a drying process via supporting non-contact horizontal rod-shaped airturn guide (10). The rod-shaped guide has an outer air-porous surface (12) supported by an air-porous tubular supporting rod (24) with an internal feed of compressed air. Separation between the web and rod is maintained by an air cushion. The air pressure is maintained above 1 bar in the pressure chamber. The specific volume flow in the porous material is in the range 10 to 5000 Nm/h m. The intervals between adjacent pores (14) is less than 1 mm. The average pore diameter is less than 0.1 mm. The drop in pressure between the pressure chamber and pore outer surface is greater than 0.8 bar. The air cushion between the pore outer surface and moving web is less than 3 mm. The rod rotates (L) about its longitudinal axis.

IPC 1-7

B65H 23/24; D21F 1/36; D21F 1/38; D21F 1/40; D21F 3/02; D21F 5/04; D21G 1/00

IPC 8 full level

B65H 23/24 (2006.01); D21F 1/36 (2006.01); D21F 1/38 (2006.01); D21F 1/40 (2006.01); D21F 3/02 (2006.01); D21F 5/00 (2006.01); D21F 5/04 (2006.01); D21G 1/00 (2006.01)

CPC (source: EP)

D21F 1/38 (2013.01); D21F 1/40 (2013.01); D21F 5/042 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1479817 A2 20041124; EP 1479817 A3 20050907; DE 10322525 A1 20041209

DOCDB simple family (application)

EP 04101976 A 20040507; DE 10322525 A 20030519