| 摘要 |
PROBLEM TO BE SOLVED: To perform the sealing operation continuously and stably without generating any burr which causes trouble of the die in the following steps. SOLUTION: A channel 9 longer than a hole 23 in a lead frame 22 and having an opening area substantially equal to or larger than that of a gate 2a is provided oppositely to the part 4 of an upper die for pooling a fused resin being fed through the hole 23 in lead frame 22 on the rising step 8 of runner of a lower die. The channel is constricted with respect to the runner or surface treatment for facilitating the releasing of die is performed, as required, so that a resin burr 25 at the pool is not moved in the post-process and the remaining resin 26a can be removed easily. |
