METHOD OF MANUFACTURING ELECTROMAGNETIC WAVE ABSORPTION SHEET, METHOD FOR SORTING POWDER AND ELECTROMAGNETIC WAVE ABSORPTION SHEET

摘要

The object of the present invention is to provide an electromagnetic wave (電磁波) method of the electromagnetic wave-absorbing sheet that can be further improved the properties of the absorbent sheet manufacturing. ; Centrifugal force and drag force (抗力) acting from the air stream to inject pulverized flattened (扁平 化) processing the treated powder (PO) through the milling step in a centrifugal wind power formula selection unit 50, and the turning in the chamber (51) by difference, it was screened to a normal piece of soft magnetic metal powder (扁平 狀 軟 磁性 金屬 粉末) (P1) and US flat powder (P2). And, that by using the non-flat powder (P2), and Pt normal soft magnetic metal powder (P1) removing form the electromagnetic wave absorbing sheet, thereby improving the characteristics. In addition, US flat powder (P2) selected is preferably recycled as a raw material powder of a milling process. ; Electromagnetic wave, a soft magnetic metal powder