| 摘要 |
<p>The invention relates to a welding strip for welding plastic sheets, consisting of a steel strip (16) which is coated at its end regions (18) with a thin copper layer. In order to achieve the object of further developing a welding strip of this kind in such a manner that its service life can be improved, the thin copper layer is coated with a comparatively even thinner metal protective layer. <IMAGE></p> |
