| 摘要 |
A locking system used with a moulded carton e.g. for eggs has a lock flange 13 moulded in the upwardly projecting direction and attached to the base 11 of the carton and a protrusion 16 on the lock flange 13 which fits into an opening 17 in a cover 12. For additional engagement security, an indent 21 on the lower lip of the opening 17 engages the bottom surface 22 of the protrusion 16. A creased hinge line 23 joins the lock flange 13 and base 11 and compressive pressure exerted by abutments 40 maintains an engaging force of the protrusion 16 with the opening 17 through which it extends. <IMAGE> |
