| 摘要 |
According to the invention, joint bands, which serve for joining sealing aprons in ground barriers, are welded even when uncleaned and even when under water or under liquid bentonite, by a welding cartridge being drawn through the joint bands, pushed one into the other, the cartridge reshaping the molten material of the joint bands in the region of the sealing gap and thereby embedding particles of dirt. <IMAGE> |
