| 摘要 |
An interlocking closure device including two closure elements (50, 70) arranged to be interlocked over a predetermined length, each of said closure elements (50, 70) having different colors for establishing visually the completeness of the occlusion of the closure elements (50, 70) by providing color different from the closure elements (50, 70) when said closure elements (50, 70) are occluded, wherein the improvement comprises the introduction of a color change enhancement member (84) in the internal channel of a translucent closure element (70) whereby the closing and opening of the closure device is more easily detected by visual inspection. |
