| 摘要 |
A circular lid is produced from a blank, which consists of a main circular portion from which projects at least one detachable tab. The tab provides a rectilinear trailing edge on the blank, which is adapted for contact by spaced lugs of a conveyor, so that when the blank is pushed through an associated machine by the lugs bearing thereupon, its rotational orientation is maintained. This ensures that registered, sequential operations can be performed on the blank, such as gluing, window film application, printing, and the like.
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