| 摘要 |
A convenient, effective closure device for use on packages such as those used to enclose games distributed on CDs, DVDs, or similar media. A preprinted edge label is selectively coated with adhesive and affixed to a package in such a manner that the package may not be opened without violating the edge label. To facilitate opening, a tear strip is at least in part defined by two rows of obtuse perforations. The obtuse perforations, or at least a subset of them, are formed to be of uniform size and shape of a pair of slits that intersect at their respective end points, forming the obtuse angle.
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