Patent ID: 9428847
Filing Date: 2016-08-30
CPC Classification: B05B,D01D

Claim Text:
1. A method comprising: introducing a fluid composition into one or more emitters, wherein (i) each emitter comprises an electrically insulating material and has a corresponding emitter orifice, (ii) the fluid composition comprises a first material having a dielectric constant greater than about 25 mixed into a liquid solvent having a dielectric constant less than about 15, (iii) the fluid composition further comprises a polymer dissolved, emulsified, or dispersed in the liquid solvent, and (iv) conductivity of the fluid composition is less than about 1 mS/cm; applying a voltage to the fluid composition to cause non-evaporative ejection of the solvent from the fluid composition after the fluid composition exits the emitters through the corresponding emitter orifices; and collecting polymer particles, formed by ejection of the solvent from the fluid composition, on a collection surface, wherein the collected polymer particles comprise polymer fibers, wherein the fluid composition that exits the emitter orifice forms one or more discrete fluid jets, and each jet ejects solvent and breaks up within about 3 mm of its corresponding point of formation.