CALCIUM CARBONATE AS CAVITATION AGENT FOR BIAXIALLY ORIENTED POLYPROPYLENE FILMS

• Main Authors: HIRSIGER, CHRISTOPH, BLANCHARD, PIERRE, BRUNNER, MARTIN, ROUX, CHRISTOPHE RENE PIERRE
• Format: Patent
• Language: English; French
• Published: 25.01.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The present invention relates to a mono or multi-layer biaxially oriented polypropylene film having a density of = 0.72 g/cm3, a process for producing the mono or multi-layer biaxially oriented polypropylene film, the use of at least one natural calcium carbonate as cavitation agent in the mono or multi- layer biaxially oriented polypropylene film, an article comprising the mono or multi-layer biaxially oriented polypropylene film as well as the uses. La présente invention concerne un film de polypropylène monocouche ou multicouche à orientation biaxiale présentant une densité de = 0,72 g/cm3, un procédé de production du film de polypropylène monocouche ou multicouche à orientation biaxiale, l'utilisation d'au moins un carbonate de calcium naturel en tant qu'agent de cavitation dans le film de polypropylène monocouche ou multicouche à orientation biaxiale, un article comprenant le film de polypropylène monocouche ou multicouche à orientation biaxiale ainsi que ses utilisations.