EP 1887121 A1 20080213 - Method and apparatus for production of nonwoven webs
Title (en)
Method and apparatus for production of nonwoven webs
Title (de)
Verfahren und Vorrichtung zur Herstellung von Vliesnetzen
Title (fr)
Procédé et appareil pour la production de voiles non tissés
Publication
Application
Priority
- EP 04256634 A 20041027
- US 69442003 A 20031027
Abstract (en)
The present invention provides in improved process of using electrostatics in the formation of nonwoven webs. In the process of the present invention, a source (10) of fibers (12) is provided. The fibers and filaments (12) are subjected to an electrostatic charge which is generated via an electrostatic unit (14) having a first side and a second side opposed to each other, wherein the electrostatic unit (14) has an array of protrusions (21) on the first side and the second side of the electrostatic unit. Once subject to the electrostatic charge, the fibers (12) are collected on a forming surface (26) to form a nonwoven web (32). The present invention also provides an apparatus for forming a nonwoven web (32). The apparatus of the present invention has a source (10) of fibers (12), a device (14) for applying an electrostatic charge to the fibers, the device (14) having a first side and a second side opposed to each other, wherein the device has an array of protrusions (21) on the first side and the second side of the device, and a forming surface (26) for collecting the fibers (12).
IPC 8 full level
D01D 5/098 (2006.01); D04H 3/02 (2006.01); D04H 3/16 (2006.01)
CPC (source: EP US)
D01D 5/0985 (2013.01 - EP US); D01D 10/00 (2013.01 - EP US); D04H 3/02 (2013.01 - EP US); D04H 3/16 (2013.01 - EP US)
Citation (applicant)
US 5382400 A 19950117 - PIKE RICHARD D [US], et al
Citation (search report)
- [E] WO 2005045116 A1 20050519 - KIMBERLY CLARK CO [US], et al
- [X] JP S6094664 A 19850527 - ASAHI CHEMICAL IND
- [XD] WO 02052071 A2 20020704 - KIMBERLY CLARK CO [US]
- [A] WO 03038174 A1 20030508 - BBA NONWOVENS SIMPSONVILLE INC [US], et al
- [A] US 4009508 A 19770301 - STERNBERG ERNEST M
- [A] WO 9321370 A1 19931028 - FIBERWEB NORTH AMERICA INC [US]
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 1528132 A1 20050504; EP 1528132 B1 20070919; DE 602004009019 D1 20071031; DE 602004009019 T2 20080717; DE 602004029726 D1 20101202; EP 1887121 A1 20080213; EP 1887121 B1 20101020; US 2005087288 A1 20050428
DOCDB simple family (application)
EP 04256634 A 20041027; DE 602004009019 T 20041027; DE 602004029726 T 20041027; EP 07015060 A 20041027; US 69442003 A 20031027