Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Kazunori Ishikawa

Takahiro Kurokawa

Hiroto Sumida

Yoshiaki Tominaga

Mitsuhiro Takahashi

Mikio Takezawa

Masahide Yokoyama

Takatoshi Mitsushima

Hiroyuki Tsuji

Takashi Nakamura

Kozo Odawara

Masashi Matsumori

Masanobu Miyata

A part feeding device of the present disclosure includes a main body; a conveyor; and a part detector. At a position further upstream than the part detector, the transporting passage includes a guide surface for guiding the lower surface of the part feeding tape, and a ceiling surface which faces the guide surface and is positioned at a position upwardly apart from the guide surface by the dimension larger than the thickness of the part feeding tape having the maximum thickness to be used in the part feeding device. The transporting passage includes a partial guide surface which supports the lower surface of the part feeding tape, and the partial guide surface includes an approaching portion approaching a ceiling surface in a downstream direction.

Part feeding device and part mounting apparatus

A collector device of a non-woven fabric manufacturing apparatus electrostatically attracts and stacks fibers charged at a first electrical polarity on a front surface of a base sheet. The collector device comprises an electrode disposed to face a back surface of the base sheet at a distance, the electrode is supplied with a voltage having a second electrical polarity opposite to the first electrical polarity or grounded, and a plurality of charge holding members positioned between the base sheet and the electrode. The charge holding members serially come in contact with and get away from the back surface of the base sheet at random.

Collector device, non-woven fabric manufacturing apparatus, and non-woven fabric manufacturing method

A nanofiber manufacturing apparatus () which produces nanofibers () by electrically stretching a solution () in space. The apparatus includes: an effusing body () having effusing holes () for effusing the solution into the space, a tip part () in which openings () are arranged at given intervals, and two side wall parts () provided so as to extend from both sides of the tip part so that the effusing holes are located between the side wall parts and the distance between the side wall parts increases with the distance from the tip part; a charging electrode () disposed at a given distance from the effusing body; and a charging power supply () which applies a given voltage between the effusing body and the charging electrode.

Method of manufacturing nanofibers

A method of manufacturing nanofibers according to an aspect of the present invention by electrically stretching a solution in space and depositing the nanofibers in a given region includes: effusing the solution from an effusing body having an effusing hole which allows the solution to effuse in a direction; applying a given voltage between the effusing body and a charging electrode being conductive and disposed at a given distance from the effusing body, using a charging power supply configured to apply the given voltage; and determining a flight path of the solution and the nanofibers such that a length of the flight path of the solution and the nanofibers is longer than a shortest path length which is a length of a shortest imaginary path connecting an end opening of the effusing hole and an accumulation part on which the nanofibers are accumulated.

Nanofiber manufacturing apparatus and method of manufacturing nanofibers

A nanofiber manufacturing apparatus for fabricating nanofibers from a raw material liquid by electrostatic explosions includes a housing internally having an electrospinning space in which nanofibers are fabricated, and a support structure for supporting an electrospinning head including nozzles for ejecting the raw material liquid into the electrospinning space. The support structure is fittable to and removable from the housing and is enabled to self-stand in a state of having been removed from the housing.

Support structure, nanofiber manufacturing apparatus using the support structure, and nanofiber manufacturing method using the support structure

A container having a plurality of orifices in an outer peripheral wall and having a space communicating with the orifices is rotated to extrude an electrically charged raw material liquid containing a polymer material from the space through the orifices by centrifugal force. This allows the electrically charged raw material liquid to form a fibrous material. At this time, the raw material liquid is supplied to the space in which the raw material liquid is filled by a raw material liquid pump so that the raw material liquid is extruded from the orifices at a predetermined pressure. That is, the raw material liquid in the space is pressurized. Also, the shape of the space in the container is set so that the centrifugal force exerted on the raw material liquid is constant.

Process of making nanofibers

Nanofibers are manufactured while preventing explosions from occurring due to solvent evaporation. An effusing unit () which effuses solution () into a space, a first charging unit () which electrically charges the solution () by applying an electric charge to the solution (), a guiding unit () which forms an air channel for guiding the manufactured nanofibers (), a gas flow generating unit () which generates, inside the guiding unit (), gas flow for transporting the nanofibers, a diffusing unit () which diffusing the nanofibers () guided by the guiding unit (), a collecting apparatus which electrically attracts and collects the nanofibers (), and a drawing unit () which draws the gas flow together with the evaporated component evaporated from the solution () are included.

Nanofiber manufacturing apparatus and nanofiber manufacturing method

A nanofiber production device produces nanofibers by stretching, in a space, a solution. The nanofiber production device includes: an effusing body which effuses the solution into the space by centrifugal force; a driving source which rotates the effusing body; a supplying electrode which is placed at a predetermined distance from the effusing body and supplies charge to the solution via the effusing body; a charging electrode to which a potential of reverse polarity to a polarity of the effusing body is applied, with the charging electrode being placed at a predetermined distance from the effusing body; and a charging power source which applies a predetermined voltage between the supplying electrode and the charging electrode.

Nanofiber production device and nanofiber production method

A nanofiber manufacturing system in which nanofiber is formed from a raw material liquid by electrostatic explosions in a nanofiber forming space and the formed nanofiber is collected and deposited on a main surface of a base sheet. The system includes: a first dielectric belt having dielectric property; sheet conveying devices for conveying the base sheet in the nanofiber forming space; a sheet contacting device for putting a back surface of the base sheet and a first surface of the first dielectric belt into contact with each other; a dielectric belt driving device for running the first dielectric belt in a conveyance direction of the base sheet within the nanofiber forming space while the first surface is kept in contact with the back surface of the base sheet; and a voltage applying device for applying a voltage to the second surface of the first dielectric belt so that dielectric polarization occurs to the first dielectric belt.

Nanofiber manufacturing system and nanofiber manufacturing method

A carried material is carried only on a surface of nano-fibers. It includes a raw material liquid spray step that sprays raw material liquid, which is a raw material of nano-fibers, into a space, a raw material liquid electrically charging step, which applies an electric charge to the raw material liquid and makes the raw material liquid electrically charged, a nano-fiber manufacturing step that manufactures the nano-fibers by having the electrically charged and sprayed raw material liquid explode electrostatically, a carried material electrically charging step that electrically charges a carried material carried on the nano-fibers with a polarity opposite to a polarity of the electrically charged nano-fibers, and a mixing step that mixes the manufactured nano-fibers and the electrically charged carried material in a space.

Fiber manufacturing method, fiber manufacturing apparatus and proton-exchange membrane fuel cell

Provided is a nano-fiber manufacturing apparatus which manufactures nano-fibers by an electrostatic explosion, and has a low possibility of explosion even when a flammable solvent is used. The nano-fiber manufacturing apparatus () having an ejection unit () which ejects solution () that is raw material liquid for nano-fibers () to a manufacturing space in which the nano-fibers () are manufactured by an electrostatic explosion of the solution (), and a charging unit which charges the solution (). The nano-fiber manufacturing apparatus () includes a gas supply source () which supplies safety gas to change an atmosphere of the manufacturing space, in which the solution () is ejected, into a low oxygen atmosphere, and a partition () which maintains the manufacturing space at a lower oxygen atmosphere than an atmosphere of an outside space of the partition ().

Nano-fiber manufacturing apparatus

A nanofiber spinning method and device for producing a high strength and uniform yarn made of nanofibers. The device includes: a nanofiber producing unit () which produces nanofibers () by extruding polymer solution, prepared by dissolving polymeric substances in a solvent, through small holes () and charging the polymer solution, and by allowing the polymer solution to be stretched by an electrostatic explosion, and which allows the nanofibers to travel in a single direction; a collecting electrode unit () to which an electric potential different from that of the charged polymer solution is applied, and which attracts the produced nanofibers () while simultaneously rotating and twisting the nanofibers, and gathers them for forming a yarn () made of the nanofibers (); and a collecting unit () which collects the yarn () passed through the center of the collecting electrode unit ().

Nanofiber spinning method and device

Nanofibers are formed from a polymer material by rotating a conductive rotating container having a plurality of small holes while supplying a polymer solution formed by dissolving a polymer material in a solvent into the rotating container, charging the polymer solution discharged from the small holes of the rotating container by charging means, and drawing the discharged filamentous polymer solution by centrifugal force and an electrostatic explosion resulting from evaporation of the solvent. The nanofibers from this production step are oriented and made to flow from one side toward the other side in a shaft center direction of the rotating container by a reflecting electrode and/or blowing means, or those nanofibers are deposited, to produce a polymer web. The nanofibers and the polymer web using these nanofibers can be produced uniformly by a simple configuration with good productivity.

Growing community of inventors

Osaka, Japan

Kazunori Ishikawa