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A patent has been granted by the European Patent Office, effective from 13 February 2008, for Tergal Industries' monolayer light barrier PET resin, LacPET. The patent application was posted in 2004.

LacPET, produced and commercialised for the packaging of long shelf life milks by Tergal Industries (the sole French PET producer) is one of the most innovative and revolutionary packaging solutions for the dairy industry.

After more than three years of research and development, Tergal Industries succeeded in developing a new process that enables the production of a modified PET resin, one which offers an adjustable light barrier property to the manufactured containers. Conscious of the innovation of said technology, Tergal Industries applied for a worldwide patent four years ago.

This patent protects a process for manufacturing monolayer packaging articles, such as opaque bottles, from a composition comprising a polyester matrix and opacifying white mineral filler. It also protects monolayer packaging articles obtained by this process, as well as the use of said articles for storing milk or dairy products.