EP 0028844 B1 19870318 - POLYPROPYLENE FILAMENT YARN AND PROCESS FOR MAKING SAME
Title (en)
POLYPROPYLENE FILAMENT YARN AND PROCESS FOR MAKING SAME
Publication
Application
Priority
US 9333979 A 19791113
Abstract (en)
[origin: EP0028844A2] A process for making filament yarn products is disclosed in which polypropylene, having a molecular weight distribution of less than about 7 and a melt index between about 20 and about 60 is melt spun to produce an as-spun product or additionally interlaced before take-up, twist-drawn, heat set, draw-textured by false-twisting, simultaneously draw-textured, sequentially draw-textured, draw-twisted, draw-Taslan textured, stuffer box crimped and cut into staple fibers, or a plurality of yarns are simultaneously draw-textured by false-twisting while reversing the direction of twist of alternate yarns and thereafter interlacing. Products of improved tenacity, improved birefringence and low elongation are produced.
IPC 1-7
IPC 8 full level
D01D 5/12 (2006.01); D01F 6/04 (2006.01); D01F 6/06 (2006.01); D02G 1/00 (2006.01); D02G 1/02 (2006.01); D02G 1/12 (2006.01); D02G 1/16 (2006.01)
CPC (source: EP)
D01D 5/12 (2013.01); D01F 6/06 (2013.01); D02G 1/00 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0028844 A2 19810520; EP 0028844 A3 19811216; EP 0028844 B1 19870318; CA 1162711 A 19840228; DE 3071928 D1 19870423; ES 496819 A0 19811016; ES 8200150 A1 19811016; JP S5685417 A 19810711; JP S6361408 B2 19881129
DOCDB simple family (application)
EP 80107011 A 19801113; CA 364368 A 19801110; DE 3071928 T 19801113; ES 496819 A 19801113; JP 15673580 A 19801107