Laminated glazing for sun-ray protection, mechanical protection, fire-protection and process for making it

摘要

Laminated glazing consists of transparent panes separated by resin, in which is embedded a screen which confers solar protection, mechanical protection and/or fire protection. The screen is embedded between two films of a thermoplastic resin such as polyvinylbutyral. Also claimed is a process for forming the above glazing, involving (a) bonding an autoclave, to encapsulate the glazing; and (b) subjecting the glazing to slight pressure before heating. The duration of the bonding phase at the maximum temperature is 130-250 (preferably 200)% of that required for producing identical glazing without the screen.