Spinneret for the production of hollow filaments

Details Spinneret for the production of hollow filaments Spinneret for the production of hollow filaments

1979-04-04

1980-10-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

264177F, 264209, 425464, 425467, B29C 2500

Patent

active

042291542

ABSTRACT:
A spinneret for the production of hollow filaments that includes a cylindrical shaped insert swaged into each passage of the spinneret to effect a seal between the insert and spinneret. The insert is constructed to contain the polymer entirely within the insert to prevent leakage of polymer into the core gas supply passages of the spinneret.

REFERENCES:
patent: 3075242 (1963-01-01), Grafried
patent: 3081490 (1963-03-01), Heynen et al.
patent: 3121254 (1964-02-01), Heynen et al.
patent: 3174364 (1965-03-01), Sims
patent: 3268313 (1966-08-01), Burgman et al.
patent: 3397427 (1968-08-01), Burke et al.
patent: 3585684 (1971-06-01), McIntosh et al.
patent: 3659983 (1972-05-01), McLain et al.
patent: 3686377 (1972-08-01), Hays

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