Patent ID: 8163227

Claim:
A nanofiber spinning method comprising: producing nanofibers by extruding polymer solution through small holes and charging the polymer solution, and by allowing the polymer solution to be stretched by an electrostatic explosion, the polymer solution being prepared by dissolving a polymeric substance in a solvent; twisting and gathering the nanofibers, which have been produced, by causing a collecting electrode unit to attract the nanofibers and simultaneously rotate the nanofibers, the collecting electrode unit having an electric potential different from an electric potential of the polymer solution which has been charged; and collecting the nanofibers, which have been twisted, by winding, wherein the collecting electrode unit includes a collecting electrode having a center provided with a through-hole through which the nanofibers pass, and in said twisting, the collecting electrode is rotated about a central axis of the collecting electrode so that the nanofibers, which have been produced, are rotated and twisted.