Thick and thin fiber having grooves on its surface and process f

Details Thick and thin fiber having grooves on its surface and process f Thick and thin fiber having grooves on its surface and process f

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.

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