A method for producing a wearable coating having a solid material fixed on skin, the method comprising: A) a step of placing one or more solid materials selected from the group consisting of a powder, a granule, a film, a fiber, a flat material, and a cubic material other than these, on a skin surface; B) a step of, after the step A), electrostatically spraying a composition X comprising the following component (a) and the following component (b) directly on the skin to thereby form a coating on the skin surface: (a) one or more volatile substances selected from the group consisting of water, an alcohol, and a ketone, and (b) a polymer having a coating forming ability; and after the step B) or before the step A), C) a step of applying a composition Y, other than the composition X, comprising one or more components selected from the group consisting of the following component (c) and the following component (d) to the skin: (c) an adhesive polymer, and (d) an oil.

An electrohydrodynamic atomizer (Z), as well as a method for operating an electrohydrodynamic atomizer wherein the atomizer comprises an atomizer unit (ZE) and a fluid tank (1),

and the atomizer unit comprises the assemblies which are necessary for electrohydrodynamic atomization,
wherein at least one assembly comprises a high voltage generator (HV) which provides the high voltage which is necessary for the electrohydrodynamic atomization,
and at least one assembly comprises a pump system (P) in order to deliver the fluid which is to be atomized to an atomizer nozzle unit (D),
wherein the atomizer unit comprises an assembly with an electronic controller (S), in particular with at least one processor unit,
and wherein the fluid tank (1) comprises a data memory (10), wherein a means for exchanging data is formed between the fluid tank (1) and at least one assembly of the atomizer unit.

A method for applying a cosmetic substance to the skin of a person, using a device for electrostatically spraying the cosmetic substance. The device has a container, a nozzle arrangement, a conveyor device, a high-voltage source, a processor for processing measurement values, data and/or reference values, a storage device and a transmitting and receiving unit for transmitting the measurement values, data and/or reference values to an external data processing device and/or for receiving further measurement values, data and/or reference values from the external data processing device.

A method for the function control of an electrohydrodynamic atomizer (20), wherein an electrohydrodynamically atomized fluid (23), originating from the atomizer (20), is applied to a body, e.g. a person, in order to coat this body at least in certain areas, wherein the atomizer (20) comprises a fluid tank for storing the fluid (23) and at least one high voltage source for making available a high voltage and at least one pump unit for transporting the fluid, wherein the fluid (23) is delivered to a nozzle arrangement of the atomizer (20) by means of the pump unit, and wherein the fluid (23) is atomized electrohydrodynamically at the nozzle arrangement by means of the effect of the high voltage from the high voltage source, wherein a voltage and/or a current at the high voltage source is evaluated in order to acquire a working point of the high voltage source via a current/voltage characteristic curve.

An electrostatic spray device includes an electrostatic mixing chamber and an electrode pair in the electrostatic mixing chamber. The electrostatic mixing chamber receives an airflow that is driven by a fan of the electrostatic spray device. The electrostatic mixing chamber also receives a flow of fluid from a reservoir of the electrostatic spray device. The electrode pair is configured to apply electrostatic charge to droplets of the fluid suspended in the airflow. A voltage level of the electrostatic charge is adjustable responsive to a first DC output from a first DC convertor. A flow volume of the fluid from the reservoir is adjustable responsive to a second DC output from a second DC convertor. In some cases, a control unit of the electrostatic mixing device modifies the first or second DC outputs based on a target level of the voltage level or the flow volume.

An electrostatic spinning device including a nozzle that sprays spinning liquid that has been charged; a switch that controls spray operation of the spinning liquid; and a housing that includes a bulging portion and a grip portion for grip of the user, the bulging portion bulging outward from a virtual line connecting a tip of the nozzle and an end of the switch on a side of the nozzle, an angle formed by an axis of the nozzle and an axis of the grip portion being 45 degrees or more.

Provided is a method for producing a coating film on the skin by electrostatic spraying, the coating film having excellent appearance and excellent scratch resistance and stretch resistance.

A method for producing a coating film on skin, comprising the steps of: A) electrostatically spraying a composition X comprising a component (a) and a component (b) directly to the skin to form a coating film on a surface of the skin: (a) one or more volatile substances selected from the group consisting of water, an alcohol and a ketone; (b) a film-forming polymer; and B) applying a composition Y comprising a component (c) and a component (d) to the skin: (c) 0.3% by mass or more and 10% by mass or less of a water-soluble polymer; (d) 40% by mass or more and 95% by mass or less of water
in the order presented or in reverse order.

A method for producing a film of the present invention includes an electrostatic spraying step of electrostatically spraying a liquid composition directly on the surface of skin to form a film on the skin by using an electrostatic spray device. The electrostatic spray device includes a container capable of storing the liquid composition, a nozzle configured to eject the liquid composition, and a power supply configured to apply a voltage to the nozzle. The liquid composition contains component (a): one or two or more volatile substances selected from alcohols and ketones, component (b): a water-insoluble polymer having film formability, and component (c): 0.2% by mass or more and 25% by mass or less of water.

A portable, hand-held electrospinning or electrospraying apparatus and system, method, and portions thereof, comprised of a durable portion of the hand-held apparatus and a consumable portion of the hand-held apparatus. The consumable portion of the hand-held apparatus, which may contain the solution to be output in electrospin or electrospray fashion, may be replaced in whole or in part to provide additional or alternative solution. A base station may be provided, and can output high voltage and communication signals to the hand-held apparatus to enable the electrospin or electrospray operation by the hand-held apparatus.

A disposable fluid delivery system for an electrostatic applicator. The system includes a nozzle housing comprising an air supply port, a voltage port, and a delivery outlet. A voltage wire has a contact in communication with a delivery tube in fluid communication with the delivery outlet. A syringe includes a barrel portion and a plunger configured to advance fluids from within the barrel portion and through the delivery tube. A cartridge housing can at least partially enclose the nozzle housing, the voltage wire, and the syringe.