EP 1321569 B1 20070214 - Suction roll
Title (en)
Suction roll
Title (de)
Saugwalze
Title (fr)
Rouleau aspirant
Publication
Application
Priority
- DE 10163542 A 20011221
- DE 20206067 U 20020418
Abstract (en)
[origin: EP1321569A1] A paper manufacturing suction roller has a mantle (1) whose inner space (2) is exhausted by a pump or fan, and limited on wither side by air seals. The ratio of the perforated mantle surface area and the non-perforated mantle surface area is lower in the outer marginal areas than in the mid-section. The ratio of the perforated mantle surface area to the non-perforated surface area near the seals is less tan in the roller centre section. The perforations are formed by drill action. The roller outer margins and in close proximity to the seals have fewer perforations which are of lesser diameter than the centre section.
IPC 8 full level
D21F 3/10 (2006.01)
CPC (source: EP)
D21F 3/10 (2013.01); D21F 3/105 (2013.01)
Designated contracting state (EPC)
AT DE FI IT SE
DOCDB simple family (publication)
EP 1321569 A1 20030625; EP 1321569 B1 20070214; AT E353992 T1 20070315; DE 50209469 D1 20070329
DOCDB simple family (application)
EP 02016700 A 20020726; AT 02016700 T 20020726; DE 50209469 T 20020726