| 摘要 |
The closure device (121) includes interlocking fastening strips (130, 131). The closure device may include a slider (132) slidably disposed on the fastening strips for facilitating the occlusion and deocclusion of the fastening strips. The fastening strips (130, 131) include a first color for facilitating visual confirmation of occlusion of the fastening strips. The visible indication of occlusion will be observed from the top of the closure device (121). If the fastening strips are properly occluded, then the first color will not be visible by viewing the top of the closure device. The first color will be observed from the top of the closure device (121) when the bag is deoccluded.
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