| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily tearable composite film which is excellent in balance among impact resistance, transparency, heat-seal properties, and easy tearability, can be processed to make a bag as a packaging material for food, etc., makes hygienic packaging possible, and can be opened easily by being pulled horizontally by weak force. SOLUTION: In the composite film, the first layer of linear low density polyethylene (A), the second layer of an ionomer resin (B), and the third layer of the linear low density polyethylene resin (A) are laminated in turn. The linear low density polyethylene which forms the first and third layers is an ethylene-α-olefin copolymer prepared by using a metallocene catalyst for polymerizing olefins and has a density of 0.905-0.950 g/cm3 and a melt flow rate of 0.5-4.0 g/10 min.
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