Objectif Objectives and content Polyolefin based polymer films, especially polypropylene films have excellent mechanical, optical and barrier properties, well suited for many industrial applications like food packaging, electrical insulation, functional coatings, etc. However they require a surface treatment to increase their surface tension at a level allowing printing, laminating or metallizing... Currently, there is no satisfactory process to achieve this goal: typical corona discharge treatment in air provides partial results, not sufficient to reach high, consistent and permanent value of surface tension. As a result water based inks cannot or only rarely be used for printing, (oil based inks encounter pollution problems), for many applications chlorine containing films are still in use industrially and the most sophisticated polypropylene films are not printable at all, in spite of their excellent properties. Two members of the consortium have demonstrated the feasibility to produce and to maintain for months, polypropylene surface tension up to 60 dyn/cm by using corona discharge treatment under specially designed active atmosphere (patented process); (vs 42-44 dyn/cm ordinarily reached with air corona discharge treatment, falling down to 3840 dyn/cm in few days). This level of surface tension is completely satisfactory for water based inks printing or functional coatings. The purpose of the research project is to reached a level of knowledge allowing industrial applications by combining, on an international level, the skills between a gas manufacturer (atmosphere control), a corona discharge devices manufacturer (electrode design, integration into industrial processes), polymer film industrial transformers (application on industrial quality films) and three well chosen university laboratories for their experience into corona discharge, pulse current generators and polymer surface analysis. With the results already obtained concerning the feasibility of the process, its strategical interest and the combination of competences and industrial motivations joined together, we are quite confident in the industrial success. Champ scientifique natural scienceschemical sciencespolymer sciencesengineering and technologymaterials engineeringcoating and filmsnatural scienceschemical sciencesinorganic chemistryhalogensengineering and technologyother engineering and technologiesfood technologyfood packagingnatural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologyatmospheric pressure Programme(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Thème(s) 0201 - Materials engineering Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur L'AIR LIQUIDE SA Contribution de l’UE Aucune donnée Adresse Chemin de la Porte des Loges 1, Les Loges en Josa 78354 JOUY-EN-JOSAS France Voir sur la carte Coût total Aucune donnée Participants (5) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire BIOPHY RESEARCH SA France Contribution de l’UE Aucune donnée Adresse Village d'Entreprises de Saint Henri, 6 rue Anne G 13016 MARSEILLE Voir sur la carte Coût total Aucune donnée Mactac Europe SA Belgique Contribution de l’UE Aucune donnée Adresse Boulevard Kennedy 7060 Soignies Voir sur la carte Coût total Aucune donnée Softal Electr. Erik Blumenfeld GmbH &Co Allemagne Contribution de l’UE Aucune donnée Adresse 1,König-Georg-Stieg 21107 Hamburg Voir sur la carte Coût total Aucune donnée Technische Universität Braunschweig Allemagne Contribution de l’UE Aucune donnée Adresse Westernwiese 38229 Salzgitter Voir sur la carte Coût total Aucune donnée UNIVERSITE PAUL SABATIER DE TOULOUSE III France Contribution de l’UE Aucune donnée Adresse Route de Narbonne 118 31062 Toulouse Voir sur la carte Coût total Aucune donnée