| 摘要 |
<p>Items are produced by shaping under vacuum, using a positive mould. A plate is clamped in a frame, and below the plate is a chamber sealed off airtight. A bottom plate forms the chamber end wall parallel to the clamping frame and is movable in the transverse direction of the latter. The plate contains an exhaustion opening. The plate is coupled to the frame via an airtight lengthwise guide, typically a bellows or cylinder.</p> |
