seen and device for framstellning of a laminate comprising at least two sheets of glass or glaskristallint material and an intermediate layer of plastics

摘要

Laminated safety glass comprising two sheets of glass or glass ceramic glued together with a thermoplastic resin whereby, as in the parent patent, the assembly is evacuated while being preheated to avoid localised gas bubbles, with the improvement that the preheating is arranged so that a temp-gradient exists between the central area and the periphery. The improvement reduces the incidence of premature localised adhesion.