Spinning method and apparatus

Details Spinning method and apparatus Spinning method and apparatus

D - Textiles, Paper

01

D

18/571

D01D 4/02 (2006.01) D01D 5/00 (2006.01)

Patent

CA 1079015

ABSTRACT OF THE DISCLOSURE Liquid polymeric materials, in a fiber spinning operation, are extruded through extrusion passageways of a spinneret plate. The passage- ways 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 Image where: R is the perpendicular distance between an axis of the passageway axis and the nozzle wall at the exit orifice; r.omega. is the perpendicular distance between nozzle wall and points along that axis; Z is the distance along that axis measured from said exit orifice; and A is a parameter, the value of which depends on the units chosen for the variables.

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