| 摘要 |
PURPOSE:To provide a method wherein a powdery flame-retardant is made into a granulated product with good yield, an aimed particle diameter and a sharp distribution while generation of fine powder is sufficiently suppressed. CONSTITUTION:When a powdery flame-retardant is made into a granulated product by molding the powdery flame-retardant by using a tablet compression granulating machine and grinding of the obtd. molded item, grooves are provided on the surface or the molded item when the molded item is compression-molded and then, the obtd. molded item is ground. |
