| 摘要 |
<p>Known vacuum presses exhibit disadvantages in respect of loading and sealing. The constructions are complicated by in spite of this the function is often insufficient. In vacuum pressing according to this invention the sealing of the space, in which vacuum is to be formed, is effected in two steps. The sealing (3) arranged on the device comprises a tongue (3a) and a rim (3b) inside the tongue (3a), preferably with a rectangular cross section. </p> |
