| 摘要 |
A protective bellows (1) for movable parts of a tool, such as a scissors-type lifting table, comprises at least three sheet-like bellows blanks (2), which are interconnected so as to form a tubutlar unit. The interconnected edges (3) of the blanks (2) have a saw-tooth shape. Each blank (2) has a first set of fold lines which, on one side of the blank (2), extend between opposite crests of the saw-tooth edges (3), as well as a second set of fold lines which, on the other side of the blank (2), extend between opposite troughs of the edges (3). The bellows (1) is made of a synthetic material, and the fold lines are provided by high-frequency welding. A method for making the protective bellows (1) is also disclosed. |
