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US 2006/0141084 A1Published application
Rotary process for forming uniform material
AssigneeE.I. du Pont de Nemours and Company
InventorsJack Armantrout, Lewis Manring, Robert Marin, Larry Marshall
Life of this patent
Estimating the term…
Abstract
A process is provided for issuing material from a nozzle in a rotor rotating at a given rotational speed wherein the material is issued by way of a fluid jet. The material can be collected on a collector concentric to the rotor. The collector can be a flexible belt moving in the axial direction of the rotor. The collected material can take the form of discrete particles, fibers, plexifilamentary web, discrete fibrils or a membrane.
Claims6
1-41. (canceled)
An apparatus for rotational spinning comprising:
- a rotor body;
- at least one nozzle within the rotor body having an inlet for receiving a fluidized mixture at above ambient temperature and pressure, and an outlet in fluid communication with the inlet, the outlet opening to the outer periphery of the rotor, wherein the nozzle further comprises:
- a letdown chamber for holding the fluidized mixture at a pressure lower than its cloud point;
- a letdown orifice intermediate the inlet and the letdown chamber;
- and
- a spin orifice intermediate the letdown chamber and the outlet.
3 more elements
46-54. (canceled)
Dependencies are inferred from the claim text.