HARD COAT FILM

To provide a hard coat film whose hard coat layer is excellent in adhesion over time even to a base material film such as a cycloolefin film which is small in a polar group and is inferior to adhesion under normal condition and under moisture and heat resistance condition, and durability.SOLUTION: A hard coat film has a hard coat layer containing an ionizing radiation-curable resin provided on at least one surface of a base material film, wherein the base material film is selected from a cycloolefin film, polyethylene terephthalate and polyethylene naphthalate, the ionizing radiation-curable resin contains an urethane acrylate resin containing a (meth)acryloyl group, and the ionizing radiation-curable resin satisfies the following conditions (I) and (II). Condition (I): A peak area ratio 1 (A/C×100) is 5% or more, a peak area appearing at 3,250-3,500 cm-1 in infrared spectroscopic spectrum measurement of an uncured ionizing radiation-curable resin is represented as A, and a peak area appearing at 1,650-1,800 cm-1 is represented as C. Condition (II): A peak area 2 (B/C×100) is 5% or more, a peak area appearing at 1,500-1,580 cm-1 in infrared spectroscopic spectrum measurement of an uncured ionizing radiation-curable resin is represented as B, and a peak area appearing at 1,650-1,800 cm-1 is represented as C.SELECTED DRAWING: None 【課題】シクロオレフィンフィルム等の極性基が少なく密着性に劣る基材フィルムに対しても、通常条件下、及び耐湿熱条件下におけるハードコート層の経時密着性と耐久性に優れるハードコートフィルムを提供する。【解決手段】基材フィルムの少なくとも片面に電離放射線硬化型樹脂を含有するハードコート層を設け、基材フィルムはシクロオレフィンフィルム、ポリエチレンテレフタレート、ポリエチレンナフタレートから選ばれ、電離放射線硬化型樹脂は（メタ）アクリロイル基を含むウレタンアクリレート樹脂を含み、電離放射線硬化型樹脂が下記条件(I)、(II)を満たす。条件(I) ピーク面積比1(A/C×100)が5%以上未硬化の電離放射線硬化型樹脂の赤外分光スペクトル測定で3250～3500ｃｍ－１に現れるピーク面積をAとし、1650～1800ｃｍ－１に現れるピーク面積をCとする。条件(II) ピーク面積比2(B/C×100)が5%以上未硬化の電離放射線硬化型樹脂の赤外分光スペクトル測定で1500～1580ｃｍ－１に現れるピーク面積をBとし、1650～1800ｃｍ－１に現れるピーク面積をCとする。【選択図】なし