Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in its interior, an electroconductive section. Preferably, the fiber collection tool further includes a surface section outside the electroconductive section. In a fiber deposit production method, a user collects, with the fiber collection tool, a fiber spun by the user by performing electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.

Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in at least a portion of the surface thereof, an electroconductive section having a surface electrical resistivity of 1011 ?/cm2 or less, or a hydrophilic section having a water contact angle of preferably from 15° to 90° at 25° C. A user collects, with the fiber collection tool, a fiber spun by the user by electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.

Abstract: Provided is a liquid skin external composition which allows a poorly water-soluble component to be applied to a skin in a liquid state. An assembly of fiber for use in production of a liquid skin external composition, the assembly of fiber comprising (a) a polymer soluble in water and an alcohol or a ketone in a content of 50 mass % or more and 98 mass % or less with respect to the whole assembly of fiber and (b) a poorly water-soluble component in a content of 2 mass % or more and 40 mass % or less with respect to the whole assembly of fiber.

Abstract: A sheet providing method provides a sheet that is used by being applied to a body surface of an individual user. The method involves determining a shape and dimensions of a sheet for each individual user U based on body surface information of the individual user; and forming the sheet by controlling a discharge nozzle that discharges a raw material of the sheet based on information regarding the shape and the dimensions of the sheet. Also, a sheet providing system having a sheet specification determining unit that determines a shape and dimensions of a sheet for each individual user based on body surface information of the individual user; and a sheet forming unit that forms the sheet by controlling a discharge nozzle that discharges a raw material of the sheet based on information regarding the shape and the dimensions of the sheet.

Abstract: The coating formation method of the present invention is a method for forming a coating on a surface of a coating formation target. The formation method of the present invention includes an electrostatic spraying step of electrostatically spraying a composition directly onto the coating formation target, thereby forming a coating composed of a deposit containing fibers. The composition contains a component (a), a component (b), and a component (c) below. (a) One or more volatile substances selected from water, alcohols, and ketones. (b) A polymer having coating formability. (c) A liquid agent containing one or more selected from oils and polyols that are in a liquid form at 20° C.

Abstract: A nanofiber sheet has a nanofiber layer composed of an accumulation of nanofibers. The nanofiber sheet has a plurality of membrane-like regions which extend between the nanofibers. The membrane-like regions of the nanofiber sheet each contain a water insoluble polymer and a pigment. The water insoluble polymer contained in the membrane-like regions of the nanofiber sheet is different from a constituent member of the nanofibers. The nanofiber sheet is preferred because it has a plurality of membrane-like aggregate regions, each an aggregate of a plurality of membrane-like regions which are adjacent to each other via a fiber and it has a non-membrane-like region between the membrane-like aggregate regions adjacent to each other.

Abstract: The present invention relates to preventing color transfer and sticking of powder-containing cosmetics to clothes or the like. A coating formation method of the present invention includes an electrostatic spraying step of electrostatically spraying a composition directly onto a skin surface onto which powder-containing cosmetics have been applied, thereby forming a coating on the skin. The composition contains a component (a) and a component (b) below. It is preferable that the method further includes a liquid agent applying step of applying a liquid agent containing one or more selected from water and oils that are in liquid form at 20° C. on the skin onto which the powder-containing cosmetics have been applied, wherein the liquid agent applying step is performed subsequent to the electrostatic spraying step. (a) One or more volatile substances selected from water, alcohols, and ketones; and (b) a polymer having a coating formation ability.

Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in at least a portion of the surface thereof, an electroconductive section having a surface electrical resistivity of 1011 ?/cm2 or less, or a hydrophilic section having a water contact angle of preferably from 15° to 90° at 25° C. A user collects, with the fiber collection tool, a fiber spun by the user by electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.

Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in its interior, an electroconductive section. Preferably, the fiber collection tool further includes a surface section outside the electroconductive section. In a fiber deposit production method, a user collects, with the fiber collection tool, a fiber spun by the user by performing electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.

Abstract: The present invention provides a coating formation method with which adhesion between skin and a coating formed by electrostatic spraying is enhanced. The coating formation method of the present invention includes a liquid agent applying step of applying a liquid agent containing one or more selected from water, polyols and oils that are in a liquid form at 20° C., and an electrostatic spraying step of electrostatically spraying a composition directly on skin to form a coating. The liquid agent applying step and the electrostatic spraying step are performed in this order or in a reversed order. The composition includes a component (a) and a component (b) below: (a) one or more volatile substances selected from the group consisting of water, alcohols, and ketones, and (b) a polymer having a coating formation ability.

Abstract: Provided is a liquid skin external composition which allows a poorly water-soluble component to be applied to a skin in a liquid state. An assembly of fiber for use in production of a liquid skin external composition, the assembly of fiber comprising (a) a polymer soluble in water and an alcohol or a ketone in a content of 50 mass % or more and 98 mass % or less with respect to the whole assembly of fiber and (b) a poorly water-soluble component in a content of 2 mass % or more and 40 mass % or less with respect to the whole assembly of fiber.

Abstract: A multilayer nanofiber sheet (10) includes: a nanofiber layer (11) including nanofibers which comprise a water-soluble polymer compound; a substrate layer (12) arranged on one surface side of the nanofiber layer (11); and a water-insoluble porous layer (13) arranged on the other surface side of the nanofiber layer (11). The three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object. Preferably, the three layers are layered in a fixed state. Preferably, the porous layer (13) has a thickness of from 3 to 1000 ?m.

Abstract: A method for producing ultrafine fibers of the present invention includes forming an electric field between an discharging nozzle from which a raw resin is discharged and a charging electrode which is disposed apart from the discharging nozzle, and supplying the raw resin which has been heated and melted into the electric field from the discharging nozzle to spin the raw resin. The raw resin is a resin mixture which contains a resin having a melting point and an additive, and satisfies a relation (I) below: A/B?1.0×102??(I) wherein A represents the absolute value (?) of electrical impedance of the raw resin at 50° C., and B represents the absolute value (?) of electrical impedance of the raw resin at a temperature 50° C. higher than a melting point of the raw resin.

Abstract: The present invention provides a method for forming a coating for a cosmetic, with which the adhesion between skin and a coating formed through electrostatic spraying can be increased. The method for forming a coating for a cosmetic of the present invention includes: a cosmetic applying step of applying a cosmetic containing 10 mass % or more of an oil, that is in a solid form at 20° C. onto skin; and an electrostatic spraying step of electrostatically spraying a composition directly onto the skin, thereby forming a coating. The composition contains a component (a) and a component (b) below: (a) one or more volatile substances selected from the group consisting of water, alcohols, and ketones; and (b) a polymer having a coating formation ability.

Abstract: The coating formation method of the present invention is a method for forming a coating on a surface of a coating formation target. The formation method of the present invention includes an electrostatic spraying step of electrostatically spraying a composition directly onto the coating formation target, thereby forming a coating composed of a deposit containing fibers. The composition contains a component (a), a component (b), and a component (c) below. (a) One or more volatile substances selected from water, alcohols, and ketones. (b) A polymer having coating formability. (c) A liquid agent containing one or more selected from oils and polyols that are in a liquid form at 20° C.

Abstract: A multilayer nanofiber sheet (10) includes: a nanofiber layer (11) including nanofibers which comprise a water-soluble polymer compound; a substrate layer (12) arranged on one surface side of the nanofiber layer (11); and a water-insoluble porous layer (13) arranged on the other surface side of the nanofiber layer (11). The three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object. Preferably, the three layers are layered in a fixed state. Preferably, the porous layer (13) has a thickness of from 3 to 1000 ?m.

Abstract: A method for producing ultrafine fibers of the present invention includes forming an electric field between an discharging nozzle from which a raw resin is discharged and a charging electrode which is disposed apart from the discharging nozzle, and supplying the raw resin which has been heated and melted into the electric field from the discharging nozzle to spin the raw resin. The raw resin is a resin mixture which contains a resin having a melting point and an additive, and satisfies a relation (I) below: A/B?1.0×102 ??(I) wherein A represents the absolute value (?) of electrical impedance of the raw resin at 50° C., and B represents the absolute value (?) of electrical impedance of the raw resin at a temperature 50° C. higher than a melting point of the raw resin.

Abstract: The present invention relates to preventing color transfer and sticking of powder-containing cosmetics to clothes or the like. A coating formation method of the present invention includes an electrostatic spraying step of electrostatically spraying a composition directly onto a skin surface onto which powder-containing cosmetics have been applied, thereby forming a coating on the skin. The composition contains a component (a) and a component (b) below. It is preferable that the method further includes a liquid agent applying step of applying a liquid agent containing one or more selected from water and oils that are in liquid form at 20° C. on the skin onto which the powder-containing cosmetics have been applied, wherein the liquid agent applying step is performed subsequent to the electrostatic spraying step. (a) One or more volatile substances selected from water, alcohols, and ketones; and (b) a polymer having a coating formation ability.

Abstract: The present invention provides a coating formation method with which adhesion between skin and a coating formed by electrostatic spraying is enhanced. The coating formation method of the present invention includes a liquid agent applying step of applying a liquid agent containing one or more selected from water, polyols and oils that are in a liquid form at 20° C., and an electrostatic spraying step of electrostatically spraying a composition directly on skin to form a coating. The liquid agent applying step and the electrostatic spraying step are performed in this order or in a reversed order. The composition includes a component (a) and a component (b) below: (a) one or more volatile substances selected from the group consisting of water, alcohols, and ketones, and (b) a polymer having a coating formation ability.