| 摘要 |
<p>The mold has connecting points (8) and/or lines (24) formed by weld unions. At regular distances, equally shaped protrusions (10,11) directed toward the same side are provided as molds for forming support feet (3) of hardenable material. The cross-section of the protrusions narrows from the even sheet area (13) to the periphery (14).</p> |
