Title (en)

PROCESS OF MAKING POLYBENZAZOLE NONWOVEN FABRIC

Title (de)

VERFAHREN ZUR HERSTELLUNG VON POLYBENZAZOL-VLIESSTOFF

Title (fr)

PROCEDE DE FABRICATION D'UNE ETOFFE NON TISSEE DE POLYBENZAZOLE

Publication

EP 0775221 B1 20021218 (EN)

Application

EP 95928723 A 19950802

Priority

• JP 18242094 A 19940803
• US 9509818 W 19950802

Abstract (en)

[origin: WO9604413A1] A continuous process for preparing nonwoven fabrics of polybenzazole filaments, which comprises spinning at least two polybenzazole dope filaments from a spinning head (1) simultaneously, through a quench chamber (2), over godet rolls (3), through an aspirator (4) and intermingling and depositing the filaments on a substantially planar collecting surface (5).

IPC 1-7

D01D 10/00; D01D 10/06; D01F 6/74; D04H 3/10

IPC 8 full level

D01D 5/12 (2006.01); D01F 6/74 (2006.01); D04H 3/009 (2012.01)

CPC (source: EP)

D01F 6/74 (2013.01); D04H 3/10 (2013.01)

Designated contracting state (EPC)

BE DE ES FR GB IT NL

DOCDB simple family (publication)

WO 9604413 A1 19960215; CA 2194989 A1 19960215; DE 69529221 D1 20030130; DE 69529221 T2 20030821; EP 0775221 A1 19970528; EP 0775221 A4 19971112; EP 0775221 B1 20021218; ES 2186726 T3 20030516; JP 3541966 B2 20040714; JP H0849156 A 19960220; MX 9700815 A 19970930

DOCDB simple family (application)

US 9509818 W 19950802; CA 2194989 A 19950802; DE 69529221 T 19950802; EP 95928723 A 19950802; ES 95928723 T 19950802; JP 18242094 A 19940803; MX 9700815 A 19950802