| 摘要 |
PURPOSE:To simplify the welding of a waterproof sheet by putting the upper electrode and the earth electrode of a high frequency heater on a sheet fixture, above the water sheet layed of the metallic plate-shaped sheet fixture, and applying high frequency while pressing them. CONSTITUTION:On a sheet fixture 3, a coated layer 5 weldable with a waterproof sheet 2 is formed. Moreover, a hand-type high frequency heater 6 is provided with a high frequency generator 7, an earth electrode and an upper electrode 10 and 11, etc. Next, in the case of welding the sheet 2 to the fixture 3 fixed to a building 1, the electrodes 10 and 11 are carried right above the fixture 3 over the sheet 2 so as to do pressure-welding. And the fixture 3 doubles as a lower electrode, and a closed circuit is formed between the upper and lower electrodes, and the fixture 3 is heated at a high frequency voltage to dissolve a layer 5, thus the sheet 2 is welded to the fixture 3. Accordingly, it can be welded simply and securely. |
