EP 1491664 A1 20041229 - Manufacturing method of fine hollow polyester filaments, and fine hollow polyester yarns
Title (en)
Manufacturing method of fine hollow polyester filaments, and fine hollow polyester yarns
Title (de)
Verfahren zur Herstellung von dünnen Polyester-Hohlfasern sowie dünne Polyester-Hohlfasergarne
Title (fr)
Procédé pour la production de filaments fins et creux en polyester, et fils fins et creux en polyester
Publication
Application
Priority
- EP 03013449 A 20030623
- US 60263403 A 20030625
Abstract (en)
Manufacture of fine hollow polyester filaments involves spinning polyester melt (1) through multilayer annularly arranged orifices of spinneret (3) having diameter difference of =20 mm between the outermost and innermost layer orifices; and passing spun filament tow (4) through a protective delay shroud of specific length, and a cylindrical quenching air tube (5) of length 15 - 40 cm and diameter difference of 12 - 33 mm between the innermost orifice and air tube. The orifice density of spinneret layout is 7 - 15 orifices per square centimeter. The shroud and quenching air tube offers a radial outer-flow quenching air at a wind speed of 0.2 - 0.6 m/second to the filament tow from outer side of the air tube to uniformly cooled to below glass transition point of the polyester polymer for bundling, followed by winding the filament tow at a speed of 1800 - 4000 meter/minute.
IPC 1-7
IPC 8 full level
D01D 5/088 (2006.01); D01D 5/24 (2006.01); D01F 6/62 (2006.01)
CPC (source: EP US)
D01D 5/088 (2013.01 - EP US); D01D 5/24 (2013.01 - EP US); D01F 6/62 (2013.01 - EP US)
Citation (search report)
- [X] US 5585182 A 19961217 - ANEJA ARUN P [US], et al
- [A] US 5407621 A 19950418 - COLLINS ROBERT J [US], et al
- [AD] EP 0860523 A2 19980826 - TEIJIN LTD [JP]
- [A] EP 0957187 A2 19991117 - INVENTA AG [CH]
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03013449 A 20030623; US 60263403 A 20030625