| 摘要 |
PROBLEM TO BE SOLVED: To provide a degassing member for an injection molding mold in which durability is high, and which can be applied also to components for molds in which a load is applied to a ventilation part at the front edge. SOLUTION: The degassing pin 29 comprises: a main part 31 which keeps an insertion hole 39 bored for penetrating into the inside and a cylindrical section 31b installed along a periphery of an end; and a ventilation part 33 installed facing an opening edge 39a of the insertion hole 39 in a cylindrical section 31b of the main part 31, and is characterized in that the porosity of the ventilation part 33 is established as a value of a larger predetermined range than the porosity of the main part 31, and these main part 31 and ventilation parts 33 are integrally formed by that crystal grains are continuously formed for each of them. COPYRIGHT: (C)2008,JPO&INPIT
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