| 摘要 |
pack for articles for food or other merchandise includes a bag 30 and a carton form 40 for supporting a lower part of the bag having a base 41 with a central fold line 32 and walls 43 hinged to the base along further fold lines 44 to enable the carton and bag to be folded flat and to be erected to open the bag. The side walls of the lower part of the bag are secured to the side walls of the carton so that when the carton is erected by opening the folded base into a V-form, the bottom part of the bag is opened, and, as the V-form is progressively widened, the bag is tensioned by the walls moving apart until the base of the carton moves "over centre" and inverts. The ends of the base of the carton are of projecting V shape and the further fold lines between the side walls and bottom of the carton are convexly curved so that the base of the carton is braced open against the bottom part of the bag which is held in tension.
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