Apparatus and method for producing nanofiber

A method for producing a nanofiber by discharging a liquid raw material from a liquid raw material discharge unit to a high-pressure gas flow ejected from a high-pressure gas ejection means, wherein a discharge angle of the liquid raw material discharged from said liquid raw material discharge unit to said high-pressure gas flow is adjusted, when a plurality of said liquid raw material discharge units discharge the liquid raw material to the high-pressure gas flow as a center ejected from said high-pressure gas ejection unit.

A method for producing a nanofiber using a nanofiber producing apparatus comprising a heating cylinder to which a raw material is fed, a heating unit for heating the heating cylinder, and an extruding unit for extruding the raw material in said heating cylinder, wherein,

• an end portion of said heating cylinder is provided with a gas ejection hole for ejecting a high-pressure gas,
• a plurality of raw material discharge units for discharging the raw material in melting state in said heating cylinder are provided around said gas ejection hole, and
• a fiber having nanometer-order diameter is obtained by heating said heating cylinder by said heating unit, by melting the raw material supplied in said heating cylinder or being maintained in a melting state, by extruding the raw material from said extruding unit and discharging from said raw material discharge unit, by generating an air current by the gas ejected from said gas ejection hole, and by carrying and elongating said discharged raw material along with the air current of the ejected gas from the periphery.