| 摘要 |
PROBLEM TO BE SOLVED: To provide an air-permeable packaging material which is easily manufactured, has a high mechanical strength and excellent in hygienic aspect. SOLUTION: The air-permeable packaging material 1 has a biaxially oriented nylon film layer 2, a reinforcing material layer 3 with a net-like structure laminated on this nylon film layer 2, and a filament nonwoven fabric layer 4 with heat-sealing properties laminated on the reinforcing material layer 3. A printed layer 2a is formed on the laminated face of the nylon film layer 2 with the reinforcing material layer 3. COPYRIGHT: (C)2004,JPO
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