| 摘要 |
In a pocket (1) of flexible sheet material comprising: a) a plurality of holes (10) placed adjacent at least one edge (12) of said pocket (1) and adapted for releasable engagement with means capable of penetrating said holes, the main novel feature is b) that for each hole (10) a slit (11) extends from said edge into the hole (10), each slit (11) being rectilinear and opening tangentially into the hole (10) concerned at the part of said hole (10) lying most distant from said edge (12), the region (9) adjacent said edge (12) and in which said holes (10) are formed being reinforced. With this arrangement, the pocket can be inserted into and removed from a loose-leaf ring binder (not shown) without opening the rings by carrying out a simple procedure, at the same time ensuring that the pocket will not be pulled out inadvertently, such as by the weight of heavy documents in the pocket. It is also possible to use the pocket (1) in a ring binder (not shown), in which the rings are not adapted to be opened.
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