Patent ID: 6261398
Filing Date: 2001-07-17
Classification: B32B

Abstract:
A process for producing a bent laminated safety glass pane from a first bent glass sheet 1, a first bonding layer 2, a thermoplastic carrier foil 4 provided with a thin layer system 3, a second bonding layer and a second bent glass sheet matching the first bent sheet, comprising the steps of:(a) placing a foil prelaminate, comprised of the first bonding layer and the carrier foil with a bonding layer side against the first glass sheet,(b) placing a cover sheet bent to match the first glass sheet, on the foil prelaminate,(c) degassing the glass-foil stack formed from the first glass sheet and the foil prelaminate and prebonding the stack under heat and pressure,(d) removing the cover sheet,(e) applying the second bonding layer and the second glass sheet to the prebonded glass-foil stack,(f) degassing the thus formed laminate and prebonding the laminate under heat and pressure, and(g) finally bonding the prebonded laminate by the application of pressure and heat to a laminated safety glass pane.