Laminated panels
AssigneeGlaverbel
InventorsGuy Mertens, Pierre Laroche
Life of this patent
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Abstract
A method of bonding a first, vitreous sheet to a second sheet to form a laminate which includes the steps of bonding together the sheets using an adhesive material which is at most 250 .mu.m thick and has a viscosity in the range 15 to 300 poises, the adhesive being such that it is settable by evaporation of solvent or by hot or cold curing. The assembly is degassed by subjecting it to sub-atmospheric pressure at a temperature such as to maintain the adhesive viscosity within that range whereafter it is exposed to atmospheric pressure and the adhesive is caused or allowed to set.
Claims18
A method of bonding a first, vitreous sheet to a second sheet via an intervening body of adhesive material, characterised by the steps of forming an assembly of said two sheets with a said intervening body of adhesive material which is at most 250 .mu.m thick and has a viscosity in the range of 15 to 300 poises, the adhesive being such that it is settable by evaporation of solvent or by hot or cold curing, placing the assembly in a chamber in a manner such that the assembly is directly exposed to the environment of the chamber, degassing the assembly by subjecting it to subatmospheric environmental pressure in the chamber at a temperature such as to maintain the adhesive viscosity within said range, and then exposing the assembly to atmospheric environmental pressure in the chamber and causing or allowing the adhesive to set.
Dependencies are inferred from the claim text.