| 摘要 |
A closure structure for the packing bag including a closure strip and a strong stickiness material applied equably on the closure strip, a tearing proof strip disposed along the closure. The said tearing proof strip includes at least one notch ranked in dashed along the closure. The said notch can be a strip shaped short straight line, a short broken line or cross lines formed by two short straight lines. The protection film is affixed to the surface of said strong stickiness material. The advantages of the closure structure of the packing bag of the utility model are that: due to the special configuration, the closure of the packing bag will be destroyed if a person attempts to steal the secret document contained therein; as a result, the stealer will be so frightened that he/she stops the stealing act and the purpose for keeping secret is therefore achieved; the utility model is lower in cost; furthermore, it may use the degraded materials which will not cause pollution.
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