WERKWIJZE VOOR DE VERVAARDIGING VAN SAMENGESTELDE FOELIES.

摘要

(Composite films) based on thermoplastic films and optionally also cellulose film and metal foils are produced by applying one or more polyethers having at least two terminal isocyanate groups and having molecular weights of between 2000 and 5000 to one of the two films to be bonded and applying one or more relatively long-chain compounds carrying at least two reactive amino groups to the other film, where the molar ratio between the isocyanate groups and the amino groups is between 1:1 and 5:1, and where the two components together are present in an amount of from 0.5 to 5.0 g/m<2>, and pressing the thus-coated film surfaces briefly together.