Process and apparatus for the production of nanofibers
October 1, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for the manufacture of a microfibrous pulp suitable for making synthetic paper Method of making supercritical fluid molecular spray films, powder and fibers Method and apparatus for spraying hot melt adhesive elongated fibers in spiral patterns by two or more side-by-side spray devices Method of and apparatus for somewhat-to-highly viscous fluid spraying for fiber or filament generation, controlled droplet generation, and combinations of fiber and droplet generation, intermittent and continuous, and for air-controlling spray deposition Burner with a cooling chamber having ceramic platelets attached to a downstream face Segmented slot die for air spray of fibers Apparatus and process for uniformly melt-blowing a fiberforming thermoplastic polymer in a spinnerette assembly of multiple rows of spinning orifices Carbon fibrils, method for producing same and adhesive compositions containing same Nozzle arrangement for a paint spray gun Narrow spray angle liquid fuel atomizers for combustion InventorsAssigneeApplicationNo. 410808 filed on 10/01/1999US Classes:239/294, And additional downstream liquid nozzle239/424Flow means of one fluid surrounds the other at outletExaminersPrimary: Douglas, Lisa AnnAttorney, Agent or FirmForeign Patent References
International ClassB05B 001/28AbstractA process for forming nanofibers comprising the steps of feeding a fiber-forming material into an annular column, the column having an exit orifice, directing the fiber-forming material into an gas jet space, thereby forming an annular film of fiber-forming material, the annular film having an inner circumference, simultaneously forcing gas through a gas column, which is concentrically positioned within the annular column, and into the gas jet space, thereby causing the gas to contact the inner circumference of the annular film, and ejects the fiber-forming material from the exit orifice of the annular column in the form of a plurality of strands of fiber-forming material that solidify and form nanofibers having a diameter up to about 3,000 nanometers.Other References
Field of SearchINCLUDING SUPPLEMENTAL GAS SHAPING OR SHIELDING JETAir shield surrounds projected airstream (i.e., air gun) And additional downstream liquid nozzle Disc impeller type or bowl-like slinger or deflector Flow means of one fluid surrounds the other at outlet Combining of three or more separate streams Concentric flow paths Concentric flow paths Heating means Concurrent or concentric flow means By impinging or atomizing with gaseous jet or blast | |
