| 摘要 |
A film packaging machine 20 has a vacuum platen 28 with a slidable air-permeable discharge plate 72 that is driven by air cylinders 112, 114 within the platen to eject a finished package by moving a leading edge of the package off the platen and into pinch rolls 62. A small plenum 96 beneath the platen surface at the discharge end, extending across the width of the platen, is supplied with air under pressure to relieve the vacuum beneath the leading portion of the package to facilitate ejection.
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