| 摘要 |
While one preform (A) is being shaped between two dies (4, 11), another preform (B) is being prepared by heating in a compartment (14) on a lower die (5) similar to the preceding one (4). When the preform (A) has been shaped, a mobile section (3) of the furnace is lifted to release the upper die (11) and make it possible to place the new preform (B) and its lower die (5) beneath it. Thus, when one preform has been shaped, the following one is already prepared by heating.
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