| 摘要 |
1. Apparatus for fixing a lid (1) having an angular flange (3) in an opening of a tank body (6) by inductive welding of the flange lying in contact with the side of the body to the body, the lid having an inner layer made of a weldable plastic, an intermediate layer made of metal and an outer base layer and the body having an inner layer made of a weldable plastic, with a coil (15) which has a single winding of a hollow waveguide of rectangular profile, can be plunged into the hollow space surrounding the flange of the lid and is fed with high-frequency alternating current, characterized in that the winding of the coil (15) is designed with its outer circumference lying in contact with the inner side of the flange (3) surrounding the hollow space, and in that the two ends (16, 17) of the winding are spaced apart by less than 1 mm. |
