| 摘要 |
<p>A flexible or semi-flexible packaging material with an oxygen barrier between 10 and 100 cc/m2d atm and a water vapor barrier between 100 and 1000 g/m2d at 38 °C and 90 % relative humidity is disclosed. It contains (a) a layer of paper having a weight between 20 and 400 g/m2, (b) a layer of ethylene copolymer or grafted ethylene copolymer having a weight between 1 and 5 g/m2 adjacent to layer (a), and (c) a layer of nylon comprising between 5 and 100 weight % of amorphous nylon and 0 and 95 weight % semicrystalline polyamide 6 having a weight between 10 and 30 g/m2 adjacent to layer (b). This packaging material is particularly useful for packaging dairy products, such as cheese, butter and margarine.</p> |
