INTERMEDIATE FILM FOR MULTILAYER GLASS AND MULTILAYER GLASS Russian patent published in 2019 - IPC C03C27/12 B32B17/10 

FIELD: glass.

SUBSTANCE: intermediate film for multilayer glass according to the present invention is an intermediate film for multilayer glass having a single-layer structure or a structure of two or more layers, and comprises a first layer comprising a thermoplastic polymer, a first layer softening temperature of 60 °C or more, intermediate film has direction MD and direction TD, and as to coefficients of thermal shrinkage obtained when first inner part, second inner part and central part are heated for 2 minutes at 80 °C, accordingly, all of MD1MAX thermal shrinkage coefficient, MD2MAX thermal shrinkage coefficient and MD3MAX thermal shrinkage coefficient are equal to 18 % or less.

EFFECT: invention relates to an intermediate film for multilayer glass, by means of which efficiency of production of multilayer glass can be increased.

13 cl, 6 dwg, 4 tbl