PROCESS FOR PRODUCING FOAM PANELS FOR THE PRODUCTION OF FOAM FILMS

• Main Authors: BECKER, Florian, PINTO, Jorge Manuel, RICHTER, Thomas, GOLDMANN, Felix, ROTH, Matthias Alexander
• Format: Patent
• Language: English; French
• Published: 05.05.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BROACHING; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COMPOSITIONS BASED THEREON; CUTTING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING; FILING; GENERAL PROCESSES OF COMPOUNDING; HAND CUTTING TOOLS; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PLANING; SAWING; SCRAPING; SEVERING; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SHEARING; SLOTTING; SOLDERING OR UNSOLDERING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention relates to a process for producing foam panels for the production of foam films consisting of a polymer having a glass transition temperature Tg of at least 100°C, characterized in that the average cell diameter measured according to the standard ASTM D 3576 is between 20 µm and 250 µm and less than 20 cells having a diameter > 260 µm are present per m2 and the elongation at break of the foam is 4%-13% measured according to ASTM D 638. L'invention concerne un procédé de fabrication de panneaux en mousse pour la fabrication de films en mousse constitués d'un polymère ayant une température de transition vitreuse Tg d'au moins 100 °C, caractérisé en ce que le diamètre moyen de cellules mesuré selon la norme ASTM D 3576 est compris entre 20 µm et 250 µm et moins de 20 cellules ayant un diamètre > 260 µm sont présentes par m2 et l'allongement à la rupture de la mousse est de 4 % à 13 % mesuré selon la norme ASTM D 638.