EP 0950744 B1 20040303 - Improvements in the production of nonwoven webs using electrostatically charge conveyor belt
Title (en)
Improvements in the production of nonwoven webs using electrostatically charge conveyor belt
Title (de)
Verbesserungen zum Herstellen van Vliesstoffen mit einem elektrostatischen geladenen Transportband
Title (fr)
Améliorations dans la production des non-tissés utilisant une bande transporteuse à charge électrostatique
Publication
Application
Priority
- US 8210198 P 19980417
- US 17571198 A 19981020
Abstract (en)
[origin: EP0950744A1] A web of continuous filaments is produced and deposited on a moving porous conveyor in the form of a continuous web. The filaments carry an electrostatic charge of a first polarity, usually negative, which is either acquired or externally applied. The porous conveyor belt is made from a dielectric material. A charge of an opposite polarity is applied to the conveyor belt in an area just upstream of the deposit of the filaments. The filaments are thus attracted to and adhere to the belt. The charge to the conveyor belt is preferably applied by an insulated bar spaced from the belt and having a series of high voltage electrodes.
IPC 1-7
IPC 8 full level
D04H 3/16 (2006.01); H01T 19/00 (2006.01)
CPC (source: EP)
D04H 3/16 (2013.01); H01T 19/00 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0950744 A1 19991020; EP 0950744 B1 20040303; DE 69822127 D1 20040408; DE 69822127 T2 20050203
DOCDB simple family (application)
EP 98123893 A 19981216; DE 69822127 T 19981216