INTERMEDIATE FILM FOR MULTILAYER GLASS, MULTILAYER GLASS AND METHOD OF PRODUCING INTERMEDIATE FILM FOR MULTILAYER GLASS Russian patent published in 2019 - IPC C03C27/12 B32B3/30 

FIELD: glass.

SUBSTANCE: invention relates to an interlayer film for laminated glass. Intermediate film comprises two or more polymer layers laminated to each other, wherein one polymer layer has a surface for which the ratio (Rz/Sm) of the roughness averaged over ten roughness points Rz (mcm) and the average interval Sm (mcm) between the bulges and recesses is 0.0018 or less when measured in accordance with the Japanese industry standard JIS B-0601 (1994).

EFFECT: technical result is prevention of optical distortion.

10 cl, 3 dwg