EP 0378194 A3 19901031 - COMPOSITE FILAMENT YARN AND PROCESS AND SPINNERET FOR MANUFACTURING THE SAME
Title (en)
COMPOSITE FILAMENT YARN AND PROCESS AND SPINNERET FOR MANUFACTURING THE SAME
Publication
Application
Priority
- JP 529989 A 19890112
- JP 32408989 A 19891215
- JP 32821389 A 19891220
Abstract (en)
[origin: EP0378194A2] A polyamide/polyurethane composite filament yarn, which filament comprises a polyamide sheath component and a polyurethane eccentric core component exposed with a neck portion of uniform width on the surface of the filament, is manufactured by a process comprising inserting, immediately before extruding from a spinneret orifice, a molten polyurethane flow obliquely from upwards and incorporating said polyurethane flow eccentrically into a molten polyamide flow flowing down in said conduit, while a small part of said polyurethane flow radially projected in a restricted width penetrating through the thinnest portion of said polyamide flow flows down along the inner wall of said conduit. For this process, an employable spinneret comprises a leading duct for polyamide connecting to an orifice via a vertical conduit, another leading duct for polyurethane connecting to an injection pipe obliquely extending therefrom, protruding into said conduit, opening immediately before said orifice and having a slit extending longitudinally at the under side along the entire protruded length.
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (search report)
- [YD] JP S63256719 A 19881024 - KANEBO LTD
- [Y] US 3607611 A 19710921 - MATSUI MASAO, et al
- [A] DE 2032912 A1 19710121
- [A] GB 1518500 A 19780719 - COURTAULDS LTD
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0378194 A2 19900718; EP 0378194 A3 19901031; EP 0378194 B1 19960410; DE 378194 T1 19910613; DE 69026393 D1 19960515; DE 69026393 T2 19960919
DOCDB simple family (application)
EP 90100443 A 19900110; DE 69026393 T 19900110; DE 90100443 T 19900110