| 摘要 |
<p>Welding plastic coated sheeting by removing the layer on the places to be welded and then placing a vast preventive agent on the welding places, comprises (a) removing circular or strip-shaped layer elements by milling filing, grinding or a similar machine process, from the places to be welded, (b) welding the metal blank sheet elements with contra-electrodes, and (c) placing circular or strip-shaped elements on the welding places by machine adhesion, spraying or coating in order to form a homogeneous coating layer.</p> |
