| 摘要 |
A retainer ring which holds an object to be polished according to an embodiment of the present invention comprises: a metal ring (10) including a plurality of through-holes (15) which is formed around one circle at predetermined intervals; inserting pins (20) which are coupled into the through-holes (15) of the metal ring (10) and includes a stepped edge (24) at one part of a body (21); and a resin (30) which covers the metal ring (10) including the inserting ring (20) and forms an external surface. As a result, a resin flow can be well maintained during an insert injection process for the retainer ring, thereby preventing detects as well as facilitating the workability of after-treatment such as cutting and tapping after injection. |
