| 摘要 |
Multi-layer barrier film made of plastic material to be used for covering and/or wrapping natural products, which products are used both for animal feeding and as raw material for plants producing energy from renewable sources, particularly ensiled agricultural vegetable products such as chopped fodder or the like, which film comprises at least one barrier layer made of air-impermeable and particularly oxygen- impermeable plastic material for preventing aerobic fermentation of the ensiled product or for limiting it to the lactic fermentation caused by anaerobic microorganisms, which film has an oxygen permeability value, measured at 0% humidity and at 20°C, not higher than 300 cc/m2/day/atm for a film in the stretched or not stretched condition, with an overall thickness not higher than 500 mum. |
