| 摘要 |
A method of manufacturing a pinch bottomed gusseted sack is provided. Paper is fed into a tuber which forms gussets (17) and an adhesive (16) is applied to the inside edges of the gussets prior to feeding the tubes into the feeder mechanism of a valve bottomer machine in which the manufacture of the sack is completed. The adhesive on the gussets prevents the folds of the gussets from opening when the tubes are picked up by suction cups by a rotary feeder. |
