EP 1543184 A1 20050622 - METHOD FOR PRODUCING HIGHLY STABLE POLYPROPYLENE FIBRES
Title (en)
METHOD FOR PRODUCING HIGHLY STABLE POLYPROPYLENE FIBRES
Title (de)
VERFAHREN ZUR HERSTELLUNG HOCHFESTER POLYPROPYLENFASERN
Title (fr)
PROCEDE DE PRODUCTION DE FIBRES DE POLYPROPYLENE A HAUTE TENACITE
Publication
Application
Priority
- DE 10244830 A 20020926
- EP 0310453 W 20030919
Abstract (en)
[origin: WO2004031459A1] The invention relates to a method for producing highly stable polypropylene fibres with a strength in excess of 6 cN/dtex. and an elongation of less than 40 %. To obtain the highest possible fineness of fibre, the fibre strands are first spun at a low melting temperature of less than 250 DEG C and a relatively low drawing speed of less than 100 m/min, whilst being cooled by a gaseous medium. The fibre strands are then stretched in at least three stretching stages with an overall stretching ratio in excess of 4:1, whereby said fibre strands are partially stretched in the first stretching stage to at least 70 % of their overall stretched state. After the stretching process, the fibre strands are cut to form the polypropylene fibres.
IPC 1-7
IPC 8 full level
D01D 13/00 (2006.01); D01F 6/06 (2006.01)
CPC (source: EP KR)
D01D 13/00 (2013.01 - EP KR); D01F 6/06 (2013.01 - EP KR)
Citation (search report)
See references of WO 2004031459A1
Designated contracting state (EPC)
BE DE FR IT
DOCDB simple family (publication)
WO 2004031459 A1 20040415; AU 2003273907 A1 20040423; BR 0314746 A 20050726; CN 1328423 C 20070725; CN 1685092 A 20051019; DE 50312095 D1 20091217; EP 1543184 A1 20050622; EP 1543184 B1 20091104; KR 20050061480 A 20050622; RU 2005112708 A 20070520; RU 2318085 C2 20080227
DOCDB simple family (application)
EP 0310453 W 20030919; AU 2003273907 A 20030919; BR 0314746 A 20030919; CN 03823034 A 20030919; DE 50312095 T 20030919; EP 03757872 A 20030919; KR 20057005042 A 20050324; RU 2005112708 A 20030919