Global Patent Index - EP 0822283 A3

EP 0822283 A3 19980415 - Nonwoven fabric and device for making the same

Title (en)

Nonwoven fabric and device for making the same

Title (de)

Spinnvliesstoff und Vorrichtung zu dessen Herstellung

Title (fr)

Matériau non-tissé et dispositif de fabrication

Publication

EP 0822283 A3 19980415 (DE)

Application

EP 97108066 A 19970517

Priority

DE 19630524 A 19960729

Abstract (en)

[origin: EP0822283A2] A spun-bonded web comprises two types, (a) and (b), of bi-component filaments of the same titre where the core material (1), polyethylene terephthalate, has a higher melting temperature than that of the sheath material (2), a binding polymer material. The ratio by weight of the sheath material of type (a) filament to type (b) filament, 2a:2b, is in the range 1:3 - 1:10 and over a cross-section of the web, the ratio by weight of type (a) filaments to type (b) filaments varies from 15 to 70%. This latter ratio changes through the cross-section planes of the web without noticeable phase boundaries. Also claimed is the apparatus for producing the web.

IPC 1-7

D04H 3/14; D04H 3/16

IPC 8 full level

D04H 3/005 (2012.01); D04H 3/011 (2012.01); D04H 3/14 (2012.01); D04H 3/147 (2012.01); D04H 3/153 (2012.01); D04H 3/16 (2006.01)

CPC (source: EP)

D04H 3/005 (2013.01); D04H 3/011 (2013.01); D04H 3/14 (2013.01); D04H 3/147 (2013.01); D04H 3/153 (2013.01); D04H 3/16 (2013.01)

Citation (search report)

  • [A] US 3940302 A 19760224 - MATTHEWS KENNETH GERALD, et al
  • [A] US 4842915 A 19890627 - HARTMANN LUDWIG [DE], et al
  • [A] GB 2198756 A 19880622 - FREUDENBERG CARL
  • [A] US 4830904 A 19890516 - GESSNER SCOTT L [US], et al
  • [A] DATABASE WPI Section Ch Week 9251, Derwent World Patents Index; Class A17, AN 92-420473, XP002056181
  • [A] DATABASE WPI Section Ch Week 8707, Derwent World Patents Index; Class A23, AN 87-047771, XP002056182
  • [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 146 (C - 1039) 24 March 1993 (1993-03-24)
  • [DA] PATENT ABSTRACTS OF JAPAN vol. 017, no. 211 (C - 1052) 26 April 1993 (1993-04-26)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 096, no. 006 28 June 1996 (1996-06-28)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0822283 A2 19980204; EP 0822283 A3 19980415; DE 19630524 C1 19980312; JP 2813584 B2 19981022; JP H10110373 A 19980428; KR 980009583 A 19980430; MX 9705699 A 19980228; PL 321390 A1 19980202

DOCDB simple family (application)

EP 97108066 A 19970517; DE 19630524 A 19960729; JP 20359997 A 19970729; KR 19970035745 A 19970729; MX 9705699 A 19970728; PL 32139097 A 19970729