Co-spun filament within a hollow filament and spinneret for prod

Details Co-spun filament within a hollow filament and spinneret for prod Co-spun filament within a hollow filament and spinneret for prod

1988-01-19

1989-08-29

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

21050023, 428376, 428397, D02G 300

Patent

active

048616613

ABSTRACT:
A hollow fiber which contains within the hollow a co-spun hollow or solid filament. The solid filament is formed of polymer that can distribute energy within the hollow fiber while a co-spun hollow inner filament can also act as a vessel for transportation or separation of fluids. Spinnerets for co-spinning such filaments are of one piece construction.

REFERENCES:
patent: 3592763 (1971-07-01), Tulin
patent: 4276172 (1981-06-01), Henne et al.
patent: 4713292 (1987-12-01), Takemura et al.
patent: 4741829 (1988-05-01), Takemura et al.
Japanese Patent Abstract of Patent Publication J58109610, Ishida et al, "Production of Hollow Fiber", 6/30/83.
Robertson, C. R. et al, "Dual Aerobic Hollow-Fiber Bioreactor for Cultivation of Streptomyces aureofaciens", Biotechnology and Bioengineering, vol. 27, pp. 1012-1020 (1985).

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