| 摘要 |
The case is formed as a frame (1) with a cover (2) that has side flaps (12,13). These are adhered to the lower parts of the frame to form the base of the case. Each lower edge of the opposing panels (7,9) of the frame has at least one notch formed in its base. A flat and rigid retainer (4) is provided to hold the heat shrink film (3). This has at least one notch formed in it, of the same shape as those formed in the opposing panels of the frame in which it engages. This locks the retainer w.r.t the frame and hence firmly holds the film between the retainer and the base (11) of the cover.
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