Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1983-09-06
1984-11-20
McCamish, Marion E.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428398, 264177F, D02G 300, B28B 2154
Patent
active
044839030
ABSTRACT:
Hollow acrylonitrile fibres and filaments are prepared by dry spinning the spinning dope through a nozzle having loop-shaped nozzle orifices, the solution having a viscosity equivalent to at least 120 falling ball seconds, measured at 80.degree. C., or at least 75 falling ball seconds, measured at 100.degree. C., wherein the nozzle orifice area of the profiling nozzle is smaller than 0.2 mm.sup.2 and the maximum width of the sides of the loop-shaped nozzle is 0.1 mm and the overlap between the two ends of the sides of the loop-shaped nozzle forms an angle of from 10.degree. to 30.degree. measured from the center of the nozzle and wherein the spinning air acts on the filaments in a transverse direction to the filament take-off and the air direction forms an angle of from 80.degree. to 100.degree. with a straight line passing through the opening between the sides.
REFERENCES:
patent: 3340571 (1967-09-01), Bishop et al.
patent: 4085174 (1978-04-01), Ishikawa et al.
patent: 4296175 (1981-10-01), De Maria et al.
Bernklau Kurt
Burghart Hans K.
Herbertz Toni
Jungverdorben Hermann-Josef
Reinehr Ulrich
Bayer Aktiengesellschaft
Johnson Beverly
McCamish Marion E.
LandOfFree
Dry-spun hollow polyacrylonitrile fibres and filaments and proce does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dry-spun hollow polyacrylonitrile fibres and filaments and proce, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dry-spun hollow polyacrylonitrile fibres and filaments and proce will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2189414