| 摘要 |
A binding device for holding loose-leaf papers comprises a binder folded by a flexible material to form of a plurality of openings each constructed by two circumferential hooks, an engageable strip and two ended envelopes. The binder passes through a number of holes punched on each loose-leaf paper and the openings are faced outwardly. The longitudinal strip has two parallel longitudinal slots for corresponding to the hooks of the binder so that the binder can be engaged with the engageable strip. After that, the ended envelopes envelop on either end of the strip to prevent the strip from sliding.
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