| 摘要 |
A sheet holder comprising a flat plate overlain by a bar held in closely spaced parallel relation thereto for holding a sheet with a short portion of its leading end projecting therefrom, a reciprocably mounted pair of jaws movable toward and from the sheet holder for taking hold of the leading end of the sheet and drawing out a predetermined length thereof, a tray holder and a platen movable from below and above the plane of the sheet to press the sheet into engagement with the rim of a tray supported by the tray holder to effect sealing of the sheet to the rim of the tray, a sheet severing device for cutting off the sheet close to the sheet holder, and control means for effecting movement of the jaws, tray holder and platen in timed relation.
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