| 摘要 |
PURPOSE:To heat the periphery of a sealed member at almost same temperature, by making a heat coil for high frequency current form nearly a hollow ellipse in a plane view and also making the short axial direction coincide with the transferring direction of a container. CONSTITUTION:A heating coil 3 disposed just above on the seat position of the transferring path has nearly a hollow ellipse in a plane view and it is arranged in such a position that the short axial direction thereof coincides with the transferring direction of a bottle 1. A high frequency current of relatively low frequency, about 40kHz current, flows to reduce the heat generated from the heating coil itself and also the heating coil is designed to be sufficiently cooled down by a cooling fan. |
