Melt spinning filter

Details Melt spinning filter Melt spinning filter

1975-04-29

1978-05-09

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With upstream screen or perforated plate for straining,...

Upstream of multi-orifice shaping die

210489, 210496, 264176F, B01D 3900, D01D 300

Patent

active

040884317

ABSTRACT:
A melt spinning process utilizes a spinning pack which contains a filter comprising a shaped, rigid, porous structure comprising inert granular material, e.g. sand or alumina particles, bonded with a permanent binding agent, e.g. sodium silicate or a complex phosphate of aluminium. Synthetic thermoplastic polymers are melt spun, particularly polyesters.

REFERENCES:
patent: 3570059 (1971-03-01), Mott
patent: 3630384 (1971-12-01), Toda
patent: 3634576 (1972-01-01), Stuchlik
patent: 3728061 (1973-04-01), Mott
patent: 3899342 (1975-08-01), Birchall et al.
patent: 3933652 (1976-01-01), Weichselbaum et al.
patent: 3947363 (1976-03-01), Pryor et al.
patent: 3950177 (1976-04-01), Bruchall et al.

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