초록 ▼

An electrostatic spraying device for spraying liquids comprises a hollow capillary structure having a convoluted inner surface, one end of which contacts a reservoir of an electrostatically sprayable liquid preferably having a viscosity from 1 to 20.times.10.sup.-6 m.sup.2 /s and a volume resistivit

An electrostatic spraying device for spraying liquids comprises a hollow capillary structure having a convoluted inner surface, one end of which contacts a reservoir of an electrostatically sprayable liquid preferably having a viscosity from 1 to 20.times.10.sup.-6 m.sup.2 /s and a volume resistivity from 2.5.times.10.sup.6 to 5.times.10.sup.8 ohm cm, the other end of which terminates in an atomization tip, and means for applying high voltage to the liquid in order to cause the liquid at the atomization tip to break up into a plurality of electrostatically charged droplets. Cartridges for use in the electrostatic spraying device are also described.

대표청구항 ▼

[ We claim:] [1.] An electrostatic spraying device which comprises:(i) a reservoir of an electrostatically sprayable liquid;(ii) a capillary structure which comprises a hollow tube having a convoluted inner surface and being formed of a polymeric material which is impermeable to the liquid, the capi

[ We claim:] [1.] An electrostatic spraying device which comprises:(i) a reservoir of an electrostatically sprayable liquid;(ii) a capillary structure which comprises a hollow tube having a convoluted inner surface and being formed of a polymeric material which is impermeable to the liquid, the capillary structure at one end contacting the reservoir of the liquid and at the other end terminating in an atomization tip, the capillary structure being such that when oriented substantially vertically and with the atomisation tip uppermost, the capillary action is sufficient to transport the liquid to the outlet at the uppermost end of the tube; and(iii) means for applying high voltage to the liquid in order to cause the liquid to be projected from the atomization tip as one or more ligaments and thereafter to break up into a plurality of electrically charged droplets.