To provide a flexible film material for sheet shutters capable of effectively preventing entry of small-sized insects into doors by cutting off wavelengths within an ultraviolet region that small-sized flying insects (phototactic insect pests) can sense, and yet, for the visual sense of a person, having excellent internal transparency and internal visibility.SOLUTION: A flexible composite laminate body includes transparent resin layers on whole both surfaces of a mesh sheet used as the base body, the mesh sheet employing a rough fabric as a base material, having a whole surface covered by a thermoplastic resin, and formed by including multiple through-holes. Each through-hole is formed into a transparent resin mirror-surface part filled with the transparent resin layers. The transparent resin mirror-surface part includes an ultraviolet-absorbing compound and a wavelength conversion compound, where 85% or more of transmission wavelengths of the transparent resin mirror-surface parts are wavelengths of 500 nm or more.SELECTED DRAWING: Figure 1【課題】飛翔性小型昆虫類(走光性害虫)が感知する紫外線領域波長をカットし、小型昆虫類の屋内侵入を効果的に防止することができ、それでいて人の視覚感知においては優れた内部透視、内部視認性を有するシートシャッター装置用のフレキシブル膜材の提供。【解決手段】粗目織物を基材として、その全表面上が熱可塑性樹脂で被覆され、多数の貫通孔を有してなるメッシュシートを基体として、この基体の両面全面に設けられた透明樹脂層を有する可撓性複合積層体において、貫通孔が透明樹脂層で充填されてなる透明樹脂鏡面部を成し、この透明樹脂鏡面部が、紫外線吸収性化合物、及び波長変換化合物を含有し、かつ、透明樹脂鏡面部の透過波長の85%以上が500nm以上の波長となるようにする。【選択図】図1
