INTERMEDIATE FILM FOR MULTILAYER GLASS AND MULTILAYER GLASS Russian patent published in 2019 - IPC C03C27/12 C03C27/02 B32B17/10 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to an interlayer film for laminated glass. 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, softening point of first layer is 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 20 minutes at 140 °C, respectively, all of MD1MAX thermal shrinkage index, MD2MAX thermal shrinkage coefficient and MD3MAX thermal shrinkage coefficient are 45 % or less. Invention also relates to multilayer glass.

EFFECT: higher efficiency of production of multilayer glass.

13 cl, 4 tbl, 5 dwg