Patent ID: 7083127

Claim:
An apparatus for modifying surface of polymer powder by rotational ultrasonic treatment, which comprises: a hopper which feeds pulverized polymer powder; a rotor which is linked to the bottom of the hopper as an integrated body, linked to a driving means through a power transferring means, and rotates by the power transferred from the driving means; a rotating disk which is linked to the bottom of the rotor as an integrated body by a bolt, and is provided with a downsloped planed at the center; a shaft which extends through centers of the hopper, the rotor, and the rotating disk, and discharges the polymer powder fed from the hopper out the bottom of the rotating disk; an ultrasonic vibrator which is positioned at the bottom of the rotating disk with a gap, and modifies the polymer powder fed by the shaft using ultrasonic wave, wherein the ultrasonic vibrator is attached to a second supporting plate which can move up and down through rails, so that the gap between the rotating disk and the ultrasonic vibrator can be controlled; a converting means which is linked to the bottom of the ultrasonic vibrator, and comprises a booster and a converter; and a generator which is linked to the converting means through a cable.