A system and method for shaping and/or directing a spray stream includes electrostatically charging a spray stream by exposing fluid to be sprayed to an electrical field within a fluid sprayer to create an electrostatically charged spray stream, and then creating an electrical field between secondary electrodes externally to the fluid sprayer such that the electrostatically spray stream is shaped and/or redirected as it passes through the electrical field.

A method for controlling fiber cross-alignment in a nanofiber membrane, comprising: providing a multiple segment collector in an electrospinning device including a first and second segment electrically isolated from an intermediate segment positioned between the first and second segment, collectively presenting a cylindrical structure, rotating the cylindrical structure around a longitudinal axis proximate to an electrically charged fiber emitter; electrically grounding or charging edge conductors circumferentially resident on the first and second segment, maintaining intermediate collector electrically neutral; dispensing electrospun fiber toward the collector, the fiber attaching to edge conductors and spanning the separation space between edge conductors; attracting electrospun fiber attached to the edge conductors to the surface of the cylindrical structure, forming a first fiber layer; increasing or decreasing rotation speed of the cylindrical structure to alter the angular cross-alignment relationship between aligned nanofibers in adjacent layers, the rotation speed being altered to achieve a target relational angle.

An electrostatic fluid delivery system is configured to deliver fluid, such as a disinfectant fluid, onto a surface by electrically charging the fluid and forming the fluid into a mist, fog, plume, or spray that can be directed onto a surface, such as a surface to be cleaned. The system atomizes the fluid using a high-pressure fluid stream and passes the fluid through an electrode of a nozzle assembly to charge droplets of the atomized fluid.

An electrostatic rotary sprayer for a coating product, including a spraying cup, a body, a drive turbine assembled in the body and configured to rotate the spraying cup about an axis of rotation defined by the body. The sprayer also includes electrodes for charging the coating product sprayed by the spraying cup, these electrodes being assembled on a ring attached on the body and each supplied with high voltage through a resistance. Each resistance extends axially outside the ring and is equipped, at its end opposite the electrode that it supplies, with a first electrical connection plug on a second plug of corresponding geometry provided on the body, with a movement parallel to the axis of rotation, and in that the ring is configured to be assembled and connected on the body, or disassembled and disconnected from the body while being equipped with electrodes and resistances.

The invention is directed to a process for forming a particle film on a substrate. Preferably, a series of corona guns, staggered to optimize film thickness uniformity, are oriented on both sides of a slowly translating grounded substrate (copper or aluminum for the anode or cathode, respectively). The substrate is preferably slightly heated to induce binder flow, and passed through a set of hot rollers that further induce melting and improve film uniformity. The sheeting is collected on a roll or can be combined in-situ and rolled into a single-cell battery. The invention is also directed to products formed by the processes of the invention and, in particular, batteries.

An electrostatic fluid delivery system is configured to deliver fluid, such as a disinfectant fluid, onto a surface by electrically charging the fluid and forming the fluid into a mist, fog, plume, or spray that can be directed onto a surface, such as a surface to be cleaned. The system atomizes the fluid using a high-pressure fluid stream and passes the fluid through an electrode of a nozzle assembly to charge droplets of the atomized fluid.

The electrospray device comprises a sprayer comprising a sprayer body and nozzle, and a partition positioned vertically and coaxially with the sprayer. The sprayer body is provided with a swirl generator for generating a swirling air stream, and a power supply connected between the nozzle and the partition, to apply voltage to the nozzle and the partition. The electrospray device may be part of a fluidized bed apparatus comprising a product container, a lower plenum base, an air distribution plate resided therebetween. When the power supply applies voltage in opposite polarities to the nozzle and the partition, the fluidized bed apparatus is used for coating particles; and when the power supply applies voltage of the same, the fluidized bed apparatus is used for spray-drying a solution. The electrospray device uses an electromagnetic hydrodynamic method to improve the performance of the fluidized bed apparatus and optimize the process of product.

The electrospray device comprises a sprayer comprising a sprayer body and nozzle, and a partition positioned vertically and coaxially with the sprayer. The sprayer body is provided with a swirl generator for generating a swirling air stream, and a power supply connected between the nozzle and the partition, to apply voltage to the nozzle and the partition. The electrospray device may be part of a fluidized bed apparatus comprising a product container, a lower plenum base, an air distribution plate resided therebetween. When the power supply applies voltage in opposite polarities to the nozzle and the partition, the fluidized bed apparatus is used for coating particles; and when the power supply applies voltage of the same, the fluidized bed apparatus is used for spray-drying a solution. The electrospray device uses an electromagnetic hydrodynamic method to improve the performance of the fluidized bed apparatus and optimize the process of product.

An electrostatic spraying device includes: a high-voltage generation device for applying a voltage between a spray electrode and a reference electrode; and a controller that controls an output power of the high-voltage generation device based on operation environment information indicating at least one of (i) a surrounding environment of the device and (ii) an operation state of a power supply that supplies power to the device, independently of a current value and a voltage value at the spray electrode and the reference electrode.

An electrostatic spraying device includes: a high-voltage generation device for applying a voltage between a spray electrode and a reference electrode; and a controller that controls an output power of the high-voltage generation device based on operation environment information indicating at least one of (i) a surrounding environment of the device and (ii) an operation state of a power supply that supplies power to the device, independently of a current value and a voltage value at the spray electrode and the reference electrode.