| 摘要 |
PROBLEM TO BE SOLVED: To execute quick extraction without breaking a formed body in the case of extracting organic binder with water or an aqueous solvent consisting essentially of water. SOLUTION: In the case of extraction and degreasing of the organic binder from the injection-formed body 1 mixed with powder and the organic binder by using, the water or aqueous solvent consisting essentially of water, ultrasonic wave irradiation is executed by using an ultrasonic generator 4 which jetting bubble from a diffusing tube 6 so as to enclose the whole formed body 1 in the state of dipping the formed body 1 into the solvent. |
