Inoue Seisakusho (Mfg) Co., Ltd.

National Institute for Materials Science & Inoue Mfg., Inc.

Takashi Suzuki

Yoshitaka Inoue

Takamasa Ishigaki

Tadahiko Yoshioka

Choji Hatsugai

Ji-Guang Li

Hidehiro Kamiya

Akira Moroo

Yoshiyasu Tokunaga

A material to be treated containing solid particles in a liquid is stirred together with milling media, and irradiated with ultrasonic waves during stirring to finely mill the solid particles to nanometer size and disperse the solid particles in the liquid. The ultrasonic waves create cavitation in the liquid and upon decay of the cavitation, shock waves are produced that cause the solid particles to vigorously collide with one another and with the milling media and these collisions, together with the shearing forces created by collision of the milling media, can produce on a commercial scale nano particles having an average particle size of at most 100 nm.

Dispersing or milling apparatus, and dispersing or milling method using same

A kneading machine comprises a cylindrical container with a supply opening and a discharge opening, a rotational shaft disposed on the axis of the container, and a plurality of blades on the shaft. Each blade comprises a pair of side plates and a kneading blade. The kneading blade is formed with a roll-in angle, and in the case of a batch-type kneading machine, both side plates are disposed at a feed angle to effect axially reciprocating movement of material for more efficient kneading. In the case of a continuous process kneading machine, the supply and discharge are axially displaced, and some of the blades comprise side plates perpendicular to the rotation axis, while other blades have an angled side plate for effecting gradual axial feed of material from supply to discharge. The blades are replaceable on the shaft. The rate of feed, and therefore the speed at which kneading takes place, can be adjusted by selecting appropriate numbers and positions for the blades with angled side plates.

Kneading machine

Growing community of inventors

Isehara, Japan

Takashi Suzuki