This indicates a device that shows a bottle already opened or not original. There are various types of Tamper-Evident system.
TE device with bridges
This TE system is widely used in standard safety closures. The closure is perforated at intervals around its circumference, forming a series of “bridges”.
When the closure is unscrewed for the first time, the bridges break, and leave a small plastic ring around the bottle neck. The customer can both feel and hear this action. When the bottle is resealed, this small ring remains detached from the closure, proving that the bottle has already been opened.
Automatic external TE band
This is usually a visible band external to the closure. When the closure is correctly unscrewed, the band breaks and falls off, in a single piece or two pieces depending on the model. When the bottle is sealed again, an empty space is evident in the area where the band originally was.
This provides the proof that the bottle has been opened.
Automatic internal TE band
This type of TE device is not usually visible to the consumer until the bottle is opened. When the closure is correctly unscrewed, a coloured band appears around the base of the closure.
When the bottle is sealed again, the coloured band is then visible around the circumference of the closure, giving the consumer indisputable proof that the bottle has already been opened.
Tear-off TE band
This type of TE device entails an external band, usually with a tab to facilitate tearing.
To open the bottle, the consumer has to first completely remove the band. Once the band has been removed, the closure can be unscrewed as usual.
The deformation of the TE band means that it cannot be easily replaced.
Cap cover with replica tear-off TE band
This type of TE device entails an external cap cover that completely encloses the non-refillable closure. To open the bottle, the consumer has to first remove the cap cover by tearing it around the circumference or by sliding it up and down. In this way, the cap cover is destroyed.
At this point, the closure can be unscrewed as usual. Because the cap cover has to be destroyed to be removed, any forced opening of the bottle creates an evident change to the product’s appearance, therefore providing indisputable proof that the bottle has already been opened