| 摘要 |
A carton having a box keel structure (16) which serves as an article separator o r retention device and in which cooperating locking elements (38, 40) are provided in part by the keel structure and in part by a panel (12), the locking means being automatically engaged during the erection of the keel structure, the locking elements comprisi ng a locking tab (38) and projecting ridge (40).
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