MULTI-LAYER GLAZING WITH STEPPED PERIPHERAL ELEMENT OF POLYMER MATERIAL WITH REQUIRED MAXIMUM PERMEABILITY FOR WATER VAPOR Russian patent published in 2022 - IPC B32B7/12 

FIELD: glazing.

SUBSTANCE: invention relates to a laminated glazing comprising a first glass sheet forming the outside of the glazing, bonded to a second glass sheet by a first intermediate adhesive layer in which the edge of the first glass sheet is spaced from the edge of the second glass sheet. The peripheral part of the free surface of the first glass sheet, its edge, the edge of the first intermediate adhesive layer and the part of the surface of the second glass sheet protruding beyond the first glass sheet, describe a continuous stepped contour, which is closed, with glue interlaying, by a stepped element made of polymeric material, which may contain a reinforcing filler and has a water vapor permeability of at most 5 g/m²/day. The invention also relates to a method for its manufacture, to its use as a glazing of a building, ground, air or water vehicle or for urban equipment.

EFFECT: invention provides an increase in the service life of the glazing.

18 cl, 3 dwg, 4 tbl