Opto-active materials alter their appearance in response to changes in humidity, temperature, electrical current, etc. Innventia has succeeded in developing a thin paper coating based on renewable materials that reacts to the moisture in exhaled breath by displaying a variety of interference colours.
We hope in the future to be able to introduce the opto-active components directly to the pulp. Future packaging products might, for example, be able to change colour if a leak develops or to indicate, at the touch of a hand, that the packaged product is genuine.
Applications for opto-active papers include:
- Interactive displays
- Anti-counterfeiting
- Product safety
- Sensor applications
- Enhancing brand visibility
- Inspiring design
Optoactive packaging in its original condition (right) and after it has been exposed to exhalation moisture (left).