With the development of technology, teachers have gradually discovered that the possibility of paper sealed bags being copied is too great. Therefore, the anti-counterfeit sealed security bag has become a test paper sealed bag favored by the school. A security bag, as the name suggests, is a bag with protection features. From this we can probably guess that the security bag of the test paper has the function of protecting the contents of the package from being exchanged and maintaining its uniqueness!
Its secret protection of objects is mainly reflected in the use of anti-counterfeiting technology.
The main anti-counterfeiting has the following types:
1. Self-adhesive sealing——Remove the reserved words
It uses a self-adhesive anti-counterfeiting seal, which has strong adhesion. Glue can withstand high and low temperatures, and it is not easy to be opened illegally. Once the security anti-counterfeiting tape is opened and the reserved words are opened, the anti-counterfeiting characters, characters and patterns will appear.
The temperature-changeable ink anti-counterfeiting part will turn red when it encounters external high temperature up to 65 ° C, and cannot be recovered. In addition, when the ink encounters water, the ink will be dissolved by the water.
3. Unique barcode——Easy query
Each bag can be printed with a unique serial number and barcode. The unique bar code is easy to tear, used to track products and stubs, and can track goods by ticket number.
In addition to the application of anti-counterfeiting technology, items can be protected from being exchanged before being opened. In addition, the bag has the functions of anti-breakage and strong adhesion to protect the internal items from being damaged.
Anti-breakage: High-mild material can prevent tearing and scratching, easy to fill, and seal quickly.
Strong tackiness: The self-adhesive anti-counterfeiting seal has strong tackiness, the glue can withstand high and low temperature, and it is not easy to be opened illegally.
Waterproof / liquid-resistant: It uses high-grade PE / PO material, and the surface layer effectively prevents water droplets and liquid penetration.