| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a ring die capable of completely folding off raw material at an outer-periphery side opening of a relief hole with a cutter, while forming the relief hole. <P>SOLUTION: In the ring die 1 for pelletizing apparatus, formed with many molding holes 11 passing through in the radial direction and rotating in one direction, relief holes 12 with larger cross-sections than those of the molding holes 11 are deviated from the molding holes 11 downward of the ring die 1 in the rotational direction. Inner side faces 111 of the molding holes 11 nearer to the upstream side in the rotational direction are aligned with inner side faces 121 of the relief holes 12 nearer to the upstream side in the rotational direction. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
