LAMINATED GLAZING WITH HIGH IMPACT RESISTANCE RELATIVE TO DISCRETE TYPES Russian patent published in 2024 - IPC B32B17/10 B32B7/22 B32B7/12 B32B3/02 

FIELD: machine building.

SUBSTANCE: invention relates to glazing of air, ground or floating vehicle or glazing for buildings, preferably, glazing for aviation purposes, having improved characteristics with respect to certain types of impact, including hail or small birds. Laminated glazing with high impact resistance relative to discrete types includes structural transparent substrate (1), connected to sheet (2) of glass with thickness of 0.5 to 4 mm, which forms outer surface of laminated glazing, by means of intermediate adhesive layer (3) with thickness of 4 to 10 mm, which includes successively having certain thickness (4a) from 0.25 to 2.5 mm, the first flexible polymer material is characterized by a relaxation modulus of at most 2 GPa for a relaxation time of at least 10 minutes at a temperature of at least −40°C in contact with glass sheet (2), and then having certain thickness (5) of a second rigid polymer material, characterized by a relaxation modulus of at least 4 GPa for a time constant of at most 0.1 ms and a temperature of at most 40°C.

EFFECT: invention provides resistance of laminated glazing from destruction of hailstones or collision with small birds with possibility of using thinner glass sheet and reduced weight of laminated glazing.

13 cl, 5 dwg, 1 tbl