EP 0407901 B1 19930113 - PROCESS FOR THE FABRICATION OF POLYETHYLENE FIBRES BY THE HIGH SPEED SPINNING OF ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE
Title (en)
PROCESS FOR THE FABRICATION OF POLYETHYLENE FIBRES BY THE HIGH SPEED SPINNING OF ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE
Publication
Application
Priority
DE 3923139 A 19890713
Abstract (en)
[origin: JPH03119105A] PURPOSE: To obtain the filament suitable for reinforcing plastics having high strength and high modulus by extruding a soln. of superhigh molecular polyethylene into a spinning duct under specified conditions and drawing off the product without stretching. CONSTITUTION: (A) A polyethylene with a molecular weight Mw of >=1×10<6> and (B) a solvent (such as paraffin oil) are mixed to obtain a 1-6 wt.% soln. It is extruded into a spinning duct at an extrusion temp. Tg=180-250 deg.C at an extrusion rate Vg=5-150 m/min through a spinning nozzle having nozzle aperture of diminishing cross sections toward the nozzle exit side, wherein the duct is kept at 100-250 deg.C. Gas is blown on filaments below the heating section. Filaments are drawn at a rate Vw of >=500 m/min. Further, the solvent is removed without stretching, the filaments to obtain the objective filaments.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0407901 A2 19910116; EP 0407901 A3 19910925; EP 0407901 B1 19930113; DE 3923139 A1 19910117; DE 59000751 D1 19930225; JP H03119105 A 19910521; US 5068073 A 19911126
DOCDB simple family (application)
EP 90112905 A 19900706; DE 3923139 A 19890713; DE 59000751 T 19900706; JP 18437990 A 19900713; US 55213590 A 19900713