| 摘要 |
1. Seal consisting of weldable sealing strips of thermoplastics, especially of mixtures of olefin copolymers and unsaturated carboxylic acid esters and/or bitumen and/or fillers, for roofs, tunnels and structures in water, wherein a double seam is provided in the overlap zone of the seal, characterized in that, of two seams forming the double seam, the weld seam at the edge of the lower strip (6) to be welded with the upper strip is made weaker than the other weld seam. |
