LAMINATE FILM

• Main Authors: UTO TAKAYUKI, MASUDA YOSHITAKE, SAKAMOTO JUN
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2016
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a laminate film which has high light resistance while exhibiting high heat shielding property and furthermore does not deteriorate in moisture resistance.SOLUTION: There is provided the laminate film which has: a substrate film having structure in which 50 or more of layers (A layers) each composed of thermoplastic resin A and of layers (B layers) each composed of thermoplastic resin B are laminated alternatively; and a heat ray absorption layer containing tungsten oxide on a single surface or double surface of the substrate film and in which transmittance change at a wavelength of 400 to 800 nm after a light resistance test of the laminate film is 1.5% or less.SELECTED DRAWING: None 【課題】 高い遮熱性能を示しつつも高い耐光性を有し、しかも耐湿性に劣ることのない積層フィルムを提供する。【解決手段】熱可塑性樹脂Ａからなる層（Ａ層）と熱可塑性樹脂Ｂからなる層（Ｂ層）を交互にそれぞれ５０層以上積層した構造を含む基材フィルムと、前記基材フィルムの片面、または両面に酸化タングステンを含む熱線吸収層を有し、前記積層フィルムの耐光性試験後の波長４００〜８００ｎｍでの透過率変化が１．５％以下であることを特徴とする積層フィルムとする。【選択図】なし