| 摘要 |
<p>The welding electrode (1) is formed from a strip (8), heated electrically, which welds via the edge (2), the pressure being exerted by stationary supports (12) serving as electricity supply points and by pressure studs (15) which bear on the edge (16) of the strip (8) while allowing it the possibility of dilating as a function of temperature. Presser strips (19) which hold the films in place before and after welding may be added to this device. <IMAGE></p> |
