Provided is an interlayer film for laminated glass, having a dark color part with uniform parallel light transmittance in a shading region, and capable of suppressing color unevenness in the shading region. An interlayer film for laminated glass according to the present invention has one end, and the other on an opposite side of the one end, the other end has a thickness larger than a thickness of the one end, and when the interlayer film is arranged between two sheets of clear glass conforming to JIS R3202:1996 to obtain a laminated glass X, and a specific measurement of parallel light transmittance is conducted for the laminated glass X obtained, the interlayer film has a gradation part in which a parallel light transmittance continuously reduces from the one end side to the other end side, and an absolute value of a variation rate in the parallel light transmittance is more than 0.3%/mm; a transparent part located closer to the one end side than the gradation part and having a parallel light transmittance of 60% or more; and a dark color part located closer to the other end side than the gradation part and including one or more points A having an absolute value of a variation rate in the parallel light transmittance of 0.3%/mm or less.
LAMINATED GLASS INTERLAYER FILM AND LAMINATED GLASS
ZWISCHENFOLIE FÜR VERBUNDGLAS SOWIE VERBUNDGLAS
FILM DE COUCHE INTERMÉDIAIRE DE VERRE FEUILLETÉ ET VERRE FEUILLETÉ
2024-02-14
Patent
Electronic Resource
English
IPC: | C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS / 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 / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |