| 摘要 |
A method of overmolding a heat pipe includes providing an injection mold apparatus having a cavity, an input gate, a bleed off overflow gate in communication with the cavity and a tubular heat pipe charged with phase change media which is capable of being collapsed by imparting an external collapsing pressure. The tubular heat pipe is placed into the cavity in the injection mold apparatus. A net shape moldable thermally conductive material is introduced into the cavity and around the tubular pipe. The bleed off overflow gate is set to open at a predetermined pressure which less than the external collapsing pressure which would damage the heat pipe to be overmolded. Pressure is relieved in the cavity of the mold apparatus through the bleed off overflow gate when pressure in the bleed off overflow gate reaches the predetermined pressure. As a result, delicate heat pipes can be overmolded in an injection mold apparatus without damage to the heat pipe during the molding process.
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