SPECTRAL REFLECTANCE MEASUREMENT DEVICE, AND SPECTRAL REFLECTANCE MEASUREMENT METHOD

PROBLEM TO BE SOLVED: To provide a spectral reflectance measurement device that measures the spectral reflectance of a resin film having a moving metal film.SOLUTION: Provided is a spectral reflectance measurement device, comprising: a measurement roll 12 for coming in contact with a long resin film 11 having a metal film and conveying the long resin film; a measurement head 13 having a light irradiation part and a reflected light receiving part; movement means 17 for moving the measurement head along the axial direction of the measurement roll; standard reflectors 181, 182 arranged at axial ends of the measurement roll; calibration means for measuring the reflection strength of the standard reflectors and calibrating a coefficient of conversion from reflection strength to spectral reflectance; control means for measuring the spectral reflectance of the long resin film having the metal film that is being conveyed; and a contactless sensor 22 arranged at both or one side of the measurement head. The contactless sensor detects the sensor-to-film distance between the contactless sensor and the long resin film, and the position of the long resin film in the axial direction of the measurement roll.SELECTED DRAWING: Figure 1 【課題】移動する金属膜を有する樹脂フィルムの分光反射率を測定する分光反射率測定装置を提供する。【解決手段】金属膜を有する長尺樹脂フィルム１１に接触し、長尺樹脂フィルムを搬送する測定ロール１２と、光照射部、反射光受光部を有する測定ヘッド１３と、測定ヘッドを、測定ロールの軸方向に沿って移動させる移動手段１７と、測定ロールの軸方向の端部に配置された標準反射物１８１、１８２と、標準反射物の反射強度を測定し、反射強度から分光反射率への変換係数を校正する校正手段と、搬送されている金属膜を有する長尺樹脂フィルムの分光反射率を測定する制御手段と、測定ヘッドの両脇または片脇に配置された非接触センサ２２と、を有し、非接触センサは、非接触センサと上記長尺樹脂フィルムとの間のセンサ−フィルム間距離、及び上記長尺樹脂フィルムの測定ロールの軸方向の位置を検出する分光反射率測定装置。【選択図】図１