| 摘要 |
Blank sleeves for forming gable-topped cartons are fed to an opening-out station and a bottom-sealing station. They are then advanced stepwise through pre-folding, filling, heating, panel-turning, and heat-sealing stations. At the panel-turning station, two panel-turning devices turn about fold axes of respective top panels on mountings disposed unilaterally from the respective axes. These devices bring the panels into face-to-face condition obliquely inclined to the carton axis. With the panels in this condition, the carton is forwarded to the heat-sealing station at which water-cooled jaws seal the panels together.
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