PURPOSE:The titled film which is suitable for packaging film, is flexible even by no addition of plasticizer, has no reduction in plasticizer content in the case of use of plasticizer and has improved transparency and water resistance, consisting of two kinds of polymers containing specific structural units in specific ratios. CONSTITUTION:(A) 1-50pts.wt., preferably 5-40pts.wt. polymer which consists of A1: 0.5-50mol% structural unit shown by formula I, A2: 0-20mol% structural unit shown by formula II (R1 is H or 1-10C hydrocarbon), A3: 50-99.5mol% structural unit shown by formula III and A4: 0-30mol% structural unit shown by formula IV (R2 is H or 1-10C hydrocarbon), has 10-2,000 polymerization degree and correlation ¦X-Y¦=10 when A+C is =95mol%, B+C is Xmol% and D is Ymol% is blended with (B) 50-99pts.wt., preferably 60-95pts.wt. polymer which consists of 95-100mol% structural unit shown by the formula III and 0-5mol% structural unit shown by the formula IV and has =300 polymerization degree and, if necessary, (C) 1-20pts.wt. based on 100pts.wt. total amounts of a plasticizer.
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