Global Patent Index - EP 1887121 B1

EP 1887121 B1 20101020 - 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

EP 1887121 B1 20101020 (EN)

Application

EP 07015060 A 20041027

Priority

  • EP 04256634 A 20041027
  • US 69442003 A 20031027

Abstract (en)

[origin: EP1528132A1] The present invention provides an improved process of using electrostatics in the formation of nonwoven webs. In the process of the present invention, a source of fibers is provided. The fibers and filaments are subject to an electrostatic charge which is generated via an electrostatic unit having a first side and a second side opposed to each other, wherein the electrostatic unit has an array of protrusions on the first side and the second side of the electrostatic unit. Once subject to the electrostatic charge, the fibers are collected on a forming surface to form a nonwoven web. The present invention also provides an apparatus for forming a nonwoven web. The apparatus of the present invention has a source of fibers, a device for applying an electrostatic charge to said fibers, wherein device having a first side and a second side opposed to each other, wherein the device has an array of protrusions on the first side and the second side of the device; and a forming surface for collecting said fibers.

IPC 8 full level

D04H 3/02 (2006.01); D01D 5/098 (2006.01); D04H 3/16 (2006.01)

CPC (source: EP)

D01D 5/0985 (2013.01); D01D 10/00 (2013.01); D04H 3/02 (2013.01); D04H 3/16 (2013.01)

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