| 摘要 |
PURPOSE:To provide a compact container bottom part forming device the inside of which can be held under a germfree condition by a sealed chamber, and which has a simple structure and can be built by a small cost. CONSTITUTION:The title container bottom part forming device has a bottom press device 11 which is equipped with a pressing plate 22 to press a sleeve material 5 by advancing/retracting to the sleeve material 5 which is fitted on a mandrel 6, and an air cylinder 21 to make the pressing plate 22 advance/ retract, as the equipment. The mandrel 6 and the pressing plate 22 are covered by a sealed chamber 4. A bellows member 23 is provided between the sealed chamber 4 and the pressing plate 22. The bellows member 23 shields the inside of the sealed chamber 4 airtightly, and at the same time, stretches or contracts following the pressing plate 22. |
