| 摘要 |
A gable-topped, flat-bottomed carton has a side seam which, in a fin of the gable top closure, fits in a gap between respective junctions of two pairs of internal sub-panels of the fin. Two opposite external sub-panels of the fin have tabs for pulling to open the closure to form a spout. The seam edge of one oblique sealing sub-panel of the closure has a tab, with scorelines from the tab into that sub-panel, while the seam edge of the other oblique sealing sub-panel has a corresponding recess covered by the one oblique sealing sub-panel, so that pulling of the tab tears back the sub-panel portion between the scorelines to expose the recess. The flat bottom closure has at the free edge of its widest sub-panel a sealing projection of a width of about one third of that of the sub-panel to facilitate interdigitation of the blanks.
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