PROBLEM TO BE SOLVED: To provide a packaging technology which achieves both excellent freshness keeping property in such a point that deterioration or decay of root vegetables can be suppressed and excellent display characteristics in such a point that good ink printability and label sticking property against an outer surface of a packaging bag are exhibited.SOLUTION: In a test film 1 which is formed from a synthetic resin film and is obtained on a desired condition, a Haze value H1 measured by a method according to JIS-K-7136 is 10% or less. In a test film 2 obtained on a desired condition, a Haze value H1/Haze value H2 calculated from a Haze value H2 measured by a method according to JIS-K-7136 the Haze value H1 is 0.7 or more and 2.5 or less. When a water contact angle on the outer surface of a freshness-keeping packaging bag for root vegetables is represented by θ1 and a water contact angle on the inner surface of the freshness-keeping packaging bag for root vegetables is represented by θ2, a value of θ1/θ2 is 0.6 or more and 9 or less.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】根菜の劣化または腐敗を抑制することができるという点において優れた鮮度保持性と、包装袋の外表面に対して良好なインキ印刷適性やラベル貼り付け性を示すという点において優れた表示特性とを両立した包装技術を提供する。【解決手段】合成樹脂フィルムからなり、所望の条件により得られる試験フィルム1について、JIS-K-7136に準拠した方法で測定したHaze値H1が10%以下であり、所望の条件により得られる試験フィルム2について、JIS-K-7136に準拠した方法で測定したHaze値H2と、前記Haze値H1と、から算出されるHaze値H1/Haze値H2が0.7以上2.5以下であり、当該根菜用鮮度保持包装袋の外表面における水の接触角をθ1とし、当該根菜用鮮度保持包装袋の内表面における水の接触角をθ2としたとき、θ1/θ2の値が0.6以上9以下である。【選択図】なし
