| 摘要 |
<p>Apparatus for building round and bowl-shaped housings and containers from foamed plastics has a branched jib, the one jib part being movable opposite the other jib part parallel to a straight line extending vertical to the jib. An exactly cylindrical structure, opt. with a bowl-shaped top, can be easily constructed from foamed plastic on a flat foundation by an injection head mounted on the jib.</p> |
