METHOD FOR PRODUCING LAMINATE Russian patent published in 2021 - IPC C09J175/00 C08G18/50 C08G18/76 B32B7/12 

FIELD: building materials.

SUBSTANCE: present invention relates to a method for producing laminate. This method includes uniform application of an isocyanate component to the first film; uniform application of a polyol component to the second film; connection of the first and the second films together, which leads to mixing and reaction of the isocyanate component and the polyol component with the formation of glue between the first and the second films; and curing of glue for gluing the first and the second films. The isocyanate component contains one aromatic isocyanate. The polyol component contains amine-uninitiated polyol selected from a group including complex polyester polyol and simple polyester polyol, and amine-initiated polyol having functionality from 3 to 8 and a hydroxyl number from 20 to 1000. Glue has viscosity equal to 25000 mPa·s at 8^th minute after connecting the first and the second films together.

EFFECT: increased gluing strength.

2 cl, 2 dwg, 3 tbl, 3 ex