| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mold for molding a synthetic resin which is rapidly heated without being affected by the surface shape of a cavity and causing the rising irregularity of a temperature, and accurately prevents the occurrence of a weld line without extending a molding cycle. <P>SOLUTION: The core of a mold is constituted so as to be divided into a core surface member having a cavity surface and a core back member having no cavity surface. The groove passing through the vicinal region of the cavity surface is formed to the core surface member so as to be turned to the cavity surface from the back side of the core surface member to house an electric heater. The groove is closed by the core back member to fix the electric heater to the deepest part of the groove. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
