| 摘要 |
PURPOSE: To provide a molded part, having a welding indicator capable of indicating that a thermoplastic material is sufficiently welded, without the material escaping and capable of being produced, for example, by an injection molding method without forming an additional part simultaneously with the production of the molded part. CONSTITUTION: A molded part formed as a welding socket 1, comprising a thermoplastic material having a resistance winding 5 arranged to the inner periphery thereof has at least one welding indicator 10. This indicator comprises a valve element formed from a material constituting the main body of the molded part or socket 3. This valve element prevents the thermoplastic material receiving high pressure at welding, to be pressed outwardly from entering a free space by the abutment of the valve element on the surface coinciding with the socket main body. |
