| 摘要 |
PROBLEM TO BE SOLVED: To provide a food packaging film which is excellent in gas barrier properties and heat sealing performance. SOLUTION: In the food packaging film 6, a first polyamine layer 1, a second barrier layer 2, a third polyamide layer 3, a fourth adhesive layer 4, and a fifth heat sealing layer 5 are laminated in turn. Since the polyamide layers 1 and 3 are laminated on both sides of the barrier layer 2, the barrier layer 2 is reinforced. Even if an impact is applied to the barrier layer 2 during transportation, a pinhole is hardly generated in the barrier layer 2. Since the food packaging film has the heat sealing layer 5, it is excellent in heat sealing performance. COPYRIGHT: (C)2011,JPO&INPIT
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