The objective is to develop and implement the production of multilayer plastic barrier films with improved properties to meet the new requirements of the agri-food and pharmaceutical markets. The project involves two companies; — Leygatech for the development and production of multilayer barrier plastic film — Addiplast for the development and production of the polymer material used in the film The project also associates the Polymer Materials Engineering Laboratory of the University of Saint Etienne to support the development of plastic material and film. The project incorporates a research topic as part of a thesis.