PROBLEM TO BE SOLVED: To provide a new infrared-ray shielding sheet having greatly improved transparency in a visible region, radio wave transmission, infrared-ray shielding property, a production cost and a color tone.SOLUTION: An infrared-ray shielding sheet has a laminated film in which a high refractive index resin layer containing fine particles and a low refractive index resin layer containing fine particles are alternately laminated, where at least one layer of the low refractive index resin has a value obtained by subtracting a refractive index at an arbitrary wavelength of 780-2,500 nm from a refractive index at a wavelength of 550 nm of 0.1 or more, the low refractive index resin layer has such a structure as to exhibit a refractive index lower than that of the high refractive index resin layer at an arbitrary wavelength of 550 nm or more and the arbitrary wavelength or less and has transparency and radio wave transmission by combining a layer (hereinafter referred to as infrared absorption pigment layer) that is formed of an infrared absorption dye having a visible light transmittance ratio of 70% or more, being an L*a*b* color system and having a b* value of 10 or less, and the infrared-ray shielding sheet has greatly improved production cost, infrared shielding property and appearance.SELECTED DRAWING: Figure 1
【課題】本発明は、可視光領域における透明性、電波透過性、赤外線遮蔽性、製造コスト、色相を大幅に改善した新たな赤外線遮蔽シートを提供する。【解決手段】微粒子を含有した高屈折率樹脂層と、微粒子を含有した低屈折率樹脂層とが交互に積層した積層膜を備える赤外線遮蔽シートにおいて、前記低屈折率樹脂層の少なくとも1層が、550nmの波長での屈折率から780nm〜2500nmの任意波長における屈折率を差し引いた値が0.1以上であり、前記低屈折率樹脂層が、550nm以上前記任意波長以下の任意の波長において前記高屈折率樹脂層よりも低い屈折率を示す構成とすることに加え、可視光透過率70%以上、L*a*b*表色系でb*の値が10以下の赤外線吸収色素からなる層(以下、赤外吸収色素層)を組合わせることで透明性、電波透過性を有し、かつ製造コスト、赤外線遮蔽性、外観が大幅に改善された新たな赤外線遮蔽シートを提供する。【選択図】図1
INFRARED-RAY SHIELDING SHEET, INTERMEDIATE FILM FOR INFRARED-RAY SHIELDING LAMINATED GLASS, AND INFRARED-RAY SHIELDING LAMINATED GLASS AND METHOD FOR PRODUCING THE SAME
赤外線遮蔽シート、赤外線遮蔽合わせガラス用中間膜並びに赤外線遮蔽合わせガラス及びその製造方法
2017-12-21
Patent
Electronic Resource
Japanese
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS |
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