Spinning apparatus providing for essentially constant extensiona

Details Spinning apparatus providing for essentially constant extensiona Spinning apparatus providing for essentially constant extensiona

1975-07-08

1977-04-05

Baldwin, Robert D.

Plastic article or earthenware shaping or treating: apparatus

Mold opening and closing means and segmented female mold

Rotary cam

425461, D01D 300

Patent

active

040159248

ABSTRACT:
Liquid polymeric materials, in a fiber spinning operation, are extruded through extrusion passageways of a spinneret plate. The passageways are designed to establish an essentially constant extensional strain rate condition for flow of liquid. The profile of the passageways is described essentially by the equation ##EQU1## where: R is the perpendicular distance between an axis of the passageway axis and the nozzle wall at the exit orifice;

REFERENCES:
patent: 2879676 (1959-03-01), Burkhardt et al.
patent: 3210451 (1965-10-01), Manning et al.
patent: 3382535 (1968-05-01), Farrari

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