The invention provides a tamper-evident
label with functions of a
laser holography label and a two-dimensional bar code and a preparation method of the tamper-evident
label. The tamper-evident label comprises a base film layer, an embossed
information layer, a
metal reflecting layer, a hollowed-out print layer, a protective layer, a
digital printing layer and an
adhesive sticker layer in the sequence from top to bottom. The preparation method comprises the following steps:
coating the base film layer with the embossed
information layer, and carrying out
drying and curing; carrying out
embossing by an
embossing machine, so that holographic patterns are copied to the embossed
information layer; plating the
metal reflecting layer in a winding-type
vacuum coating machine; printing the specially-made hollowed-out print layer on the
metal reflecting layer;
coating the whole hollowed-out print layer with the protective layer; printing the two-dimensional bar code containing various information;
coating an
adhesive sticker; compounding with semitransparent
silicone oil paper; carrying out
die cutting; carrying out slitting; carrying out inspection; and putting into storage. For the tamper-evident label, the
laser holography anti-counterfeiting function and various variable
data information extraction functions are simultaneously obtained, in addition, the function of preventing the label from being torn through an improper means so as to further avoid the malicious bar code scanning is also provided, and the label has the advantages of anti-counterfeiting property, tamper-evident property and disposable use property.