| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer orientated film which has no surface defect or a limited number of surface defects, and a first polymer layer orientated film which is peeled off from the multilayer orientated film and is totally free from a surface defect or almost free from the surface defect. SOLUTION: This multilayer orientated film comprises at least, one layer as a first polymer layer and at least, one layer as a second polymer layer which is non-compatible with and adjacent to the one layer as the first polymer layer. In addition, the interlayer adhesion between these two layers is within the range of 0.1-20g/cm, and at least, one outermost layer is composed of the first polymer layer and both second polymer layer and first polymer layer are alternately present. In this case, the constituent resin of the second polymer layer is an ethylene copolymerized polypropylene with a melt rate(MFR) of 3-50g/10min. Further, the number of fish eyes with a diameter of 90μm or more in the second polymer layer is 0-50pcs/3000cm<2> . The first polymer layer is obtained by peeling the multilayer orientated film. |
