Tamper evident material is a tamper proof material widely used for security film making, adhesive tape, and so on. We can classify the material into two types according to the residue parts: low residue type and high residue type.

Low residue type means the pattern peeling from the film surface and the another part remaining on the film surface when peeling, while high residue type means the pattern remaining on the film surface and the another part peeling to other substrates. Below is the picture on pattern of "OPENED".

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