IBT (inert barrier technology)
= barrier through coating
Cups are placed in a chamber, which is then placed under vacuum. Afterwards, oxygen and a gas containing silicon are piped into the chamber and a plasma is generated using an electrode. This produces a wafer-thin silicon oxide coating on the cups.
The barrier layer is flexible and can undergo sterilization and pasteurization. It has no effect on the transparency or weight of the cup – an important factor with respect to logistics and CO2 emissions. The coating of this type of plastic food packaging has no effect on disposal or recycling, either.