| 摘要 |
PURPOSE: An insertion-type gas vent is provided to discharge gas rapidly because the height of a core is lower than a block to form a wide space in the lower side of the core. CONSTITUTION: An insertion-type gas vent(100) comprises a block(110), a core(120), and a gap. The block is inserted in an injection mold. An insertion hole(113) is vertically perforated in the block. The core is fitted in the insertion hole. The gap is formed between the insertion hole and the core and vertically perforated. |
