Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1984-04-12
1987-01-27
Kendell, Lorraine T.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428399, 428400, 428224, D02G 300
Patent
active
046393978
ABSTRACT:
The present invention relates to an advanced silky thermoplastic polymer fiber being thick and thin along its axis and having two or more, preferably more than two axially-continuous grooves per filament with the entrance widths of 0.2 to 4.mu. and the depths of 0.1 to 1.8.mu.. The said fiber can be formed by dissolving out at least part of a easily-soluble polymer from a drawn composite fiber comprised of two differently-soluble thermoplastic polymer components, the easily-soluble one of said components having at least two locations with the areas of 0.2 to 4.mu. at the periphery of the transverse cross-section thereof and being thick and thin along its axis.
REFERENCES:
patent: 4242405 (1980-12-01), Backno
patent: 4455347 (1984-06-01), Ochi et al.
Japanese Laid-Open Publication No. 5921/1982.
Japanese Laid-Open Publication No. 5912/1982.
Sato Yoshiaki
Suzuki Hisao
Kendell Lorraine T.
Toray Industries Inc.
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