| 摘要 |
In devices for welding together two plastic sheets (6, 7), in particular for the production of welds, the sheets are clamped between two welding tools (1, 2). One of the two welding tools is equipped with heating means. In order to make the device independent of readjustments or setting operations for differences in the thickness of the sheets, the heating means are arranged and designed in such a way that the heated welding tool is held essentially at a uniform temperature. The other welding tool (2) is provided with a thermocouple (13) which has the effect of releasing the clamping of the plastic films between the welding tools when a predetermined temperature has been reached. <IMAGE> |
