Panasonic Corporation

Mikio Takezawa

Takahiro Kurokawa

Hiroto Sumida

Kazunori Ishikawa

Yoshiaki Tominaga

Mitsuhiro Takahashi

Takatoshi Mitsushima

Masahide Yokoyama

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 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

Kagawa, Japan

Mikio Takezawa