| 摘要 |
<p>A corner lock carton exhibiting improved lock retention includes a base panel (3), a pair of walls panels (5, 7), and a locking flap panel (13) joined to one of the wall panels. The other wall panel includes a locking slit (29, 31, 33) formed inwardly thereon to receive the locking flap panel. The slit has a vertical segment (29), a horizontal segment (33), and an angled segment (31) connecting the vertical and horizontal segments; the ends of the angled segments being disposed at an angle of 40° to the vertical segment. The flap panel (13) includes a lock member (17) having a first edge portion (19) aligned parallel to the vertical segment of the slit when the carton is erected and a second edge portion (21) disposed at an angle of 45° to the first edge portion. When the wall panels (5,7) are erected, the lock member (17) is disposed through the slit, and the second edge portion (21) of lock member engages the slit at a point adjacent the juncture of the vertical segment (29) and the angled segment (31) to securely interlock the flap panel and slit together.</p> |
