| 摘要 |
A paperboard carton blank is disclosed which includes first and second panels having side walls connected thereto by scored fold lines formed between a respective side wall and a respective edge the panel, with one of the side walls of the first panel and one of the side walls of the second panel being congruent and at least one predetermined edge of the second panel being devoid of a side wall. A sealing flap is provided which extends a predetermined distance from a predetermined edge of one of the side walls of the first panel with the predetermined edge of the side wall being that edge which extends adjacent to the predetermined edge of the second panel of a carton formed from the blank. An opening means is also provided which is defined by the predetermined edge of the second panel and regions of weakness formed in the second panel which extend from the predetermined edge of the second panel for permitting access to the inside of the formed carton. The opening means includes an opening force receiving means defined by the regions of weakness, the predetermined edge of the second panel and a line of weakness which extends between the regions of weakness substantially parallel to and spaced a perdetermined distance greater than or equal to the predetermined distance of the sealing flap from the predetermined edge of the second panel. Once opened, the carton formed from the above blank is capable of reclosure to form a vent opening which permits steam to escape.
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