Spin pack assembly

Details Spin pack assembly Spin pack assembly

1974-09-11

1976-02-17

Shore, R. J.

Plastic article or earthenware shaping or treating: apparatus

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

Upstream of multi-orifice shaping die

425199, 4253822, 425464, B29F 304

Patent

active

039389251

ABSTRACT:
A spin pack assembly for the extrusion of synthetic filaments. Novel features are the polymer flow channels of the breaker plate and spinneret plate which comprise a capillary with open ends, the entrance ends of the breaker plate and spinneret plate and the exit end of the breaker plate defining, respectively, enlarged inlets and outlets, the walls of which intersect with adjacent walls to form a closed, interlocking network of ridges on the top surfaces of the breaker plate and spinneret plate and on the bottom surface of the breaker plate, so as to eliminate areas of low or zero velocity flow of polymer and to reduce pressure differences in polymer in the breaker plate-spinneret plate area.

REFERENCES:
patent: 3044628 (1962-07-01), Heijnis
patent: 3435108 (1969-03-01), Hendry
patent: 3867082 (1975-02-01), Lambertus

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