FILM MULTICOUCHE, PROCEDE DE FABRICATION DE POCHES ET POCHES FORMEES PAR SA MISE EN OEUVRE.

摘要

Pouches (10) for contg. substances are made from multi-layer film, 2 - 24 weeks old. including at least one barrier layer and at least one sealing layer and having at least a partial transmissivity to aromatic substances and an oxygen transmissivity of at least 600 cm3 per m2 per day per bar. The barrier layer is pref. a polyolefin and the sealing layer is ethylene-vinyl acetate having an average vinyl acetate content of at least 18 wt. The barrier layer is pref. 25 - 100 microns thick and the sealing layer is 50 - 200 microns thick. The film layers are aged 4 - 20 weeks, the exact age depending on the slip agent content of the film. The multilayer film is sealed to form a pouch defining a closed vol., having an upper portion with a spout (15).