CTI’s BlindSpotz “Tamper Freeze” and “Tamper Heat” inks show color and messaging when a package has been altered. An example would be by a heat gun to melt the glue on packaging tape.
The “Tamper Heat and Tamper Freeze” ink technologies from CTI are designed to protect documents, seals, tape, labels or various packaging substrates.
“Tamper Freeze” inks turn from clear to blue when exposed to temperatures below -10° C (14° F) while “Tamper Heat” turns from gray to orange (or gray to pink) if exposed to heat greater than 65° C (149° F).
“Tamper Freeze” can detect the use of a cold spray, freezing or liquid nitrogen to pull apart a money or document bag and remove and replace an expired label or bypass security tape–treated, high-heat irreversible inks.
“Criminals have figured out that the way to get around high-heat tampering indicators is to ‘go cold’ by exposing packaging to very low temperatures,” CTI Founder Lyle Small said. “This can ‘delaminate’ many adhesives without activating a tamper-heat indicator.”
According to Lyle, CTI’s “Tamper Freeze” ink is the only tamper-evident product on the market to identify sub-freezing tampering.
The “Tamper Heat” inks maintain color if exposed to temperatures greater than 100° C (212° F); the “Tamper Heat”/“Tamper Freeze” technology activates within a 5° C window (41° F); can be printed with adhesives and overprint varnishes; and will last much longer on the shelf than existing “heat irreversible” systems, in both wet and printed states.
The inks are part of the BlindSpotz technology portfolio from CTI developed to print sensors on-pack to measure temperature compliance, confirm high-pressure processing pasteurization and detect tampering or water damage.
The “Tamper Heat-Freeze” ink is available in UV Flexo and Water-based inks systems.