Spinneret for hollow fibers having curved spacing members projec

Details Spinneret for hollow fibers having curved spacing members projec Spinneret for hollow fibers having curved spacing members projec

1988-05-10

1989-07-25

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Plural orifices

26417713, 26417714, 425464, D01D 524

Patent

active

048508470

ABSTRACT:
A hollow fiber with a plurality of members projecting from its outer surface in an arc turned back on itself is formed from a spinneret having a segmented orifice wherein each segment comprises a first portion in the form of an arc curved about the center of the orifice, a second portion extending from the first and connected to a third portion which is in the form of a reverse curve with respect to the first.

REFERENCES:
patent: 3558420 (1971-01-01), Opfell
patent: 3585684 (1966-12-01), McIntosh
patent: 3772137 (1973-11-01), Tolliver
patent: 4325765 (1982-04-01), Yu et al.
patent: 4385886 (1983-05-01), Samuelson
patent: 4483903 (1984-11-01), Reinehr et al.
patent: 4648830 (1987-03-01), Peterson et al.
Klare et al., "Synthetic Fibers from Polyamides, Technology and Chemistry", Akademie-Verlag, Berlin (1963).
Chang et al., "Glucose Oxidation in a Dual Hollow Fiber Bioreactor with a Silicone Tube Oxygenator", Biotechnology and Bioengineering, vol. XXIX, pp. 552-557 (1987).
Murakami, "Hollow Fiber Membranes for New Biotechnology", 42, No. 6, pp. 243-248 (1986).

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