FIELD: chemistry.
SUBSTANCE: invention relates to multilayer glass and an intermediate film for it. Intermediate film for multilayer glass has multiple recesses and multiple bulges on first surface and second surface opposite to first surface. Recesses on the first surface and the second surface in each case have the shape of a groove with a continuous bottom and are arranged with regular intervals and are parallel relative to each other. Said intermediate film for multilayer glass satisfies formulas (1), (2) and (3): θ ≥ 10° (1) R/Sm ≤ 0.3 (2) Rz ≥ 1, (3) where θ is an angle at which the recesses intersect, which in each case have a groove shape with a continuous bottom, on first surface and recesses, which in each case have the shape of slot with continuous bottom, on second surface, where Sm is average value Sm1 (mcm) and Sm2 (mcm), where Sm1 is the interval between the recesses, which in each case have the shape of a groove with a continuous bottom, on the first surface, and Sm2 is the interval between the recesses, which in each case have the shape of a groove with a continuous bottom, on the second surface, wherein R is the average value of R1 (mcm) and R2 (mcm), where R1 is the rounding radius of the bulges on the first surface, and R2 is the rounding radius of the bulges on the second surface, and where Rz is the average value Rz1 (mcm), which is the roughness of the top portions of the bulges on the first surface, and Rz2 (mcm), which is the roughness of the upper portions of the bulges on the second surface.
EFFECT: technical result is possibility of storing intermediate film for multilayer glass without manifestation of self-adhesion in stacked state.
5 cl, 5 dwg, 4 tbl
