There is provided an interlayer film for laminated glass with which double images and uneven appearance by light can be effectively suppressed. An interlayer film for laminated glass (11) according to the present invention includes a first layer (1) containing a thermoplastic resin and a plasticizer, and a second layer (2) containing a thermoplastic resin and a plasticizer. The first layer (1) has a minimum thickness of 20 µm or more; a ratio B of thickness of the first layer (1) at the other end (11b) to thickness of the interlayer film at the other end (11b) is 1.1 times or more and 1.7 times or less a ratio A of thickness of the first layer (1) at the one end (11a) to thickness of the interlayer film at the one end (11a) when a wedge angle is 0.1 mrad or more and 0.5 mrad or less, and the ratio B is 0.8 times or more and 1.1 times or less the ratio A when the wedge angle is more than 0.5 mrad; and a content of the plasticizer in the first layer (1) is larger than a content of the plasticizer in the second layer (2).
LAMINATED GLASS INTERMEDIATE FILM, AND LAMINATED GLASS
VERBUNDGLASZWISCHENFOLIE SOWIE VERBUNDGLAS
FILM INTERMÉDIAIRE DE VERRE FEUILLETÉ ET VERRE FEUILLETÉ
2020-06-10
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 |