Laminated safety glass (VSG) is produced in our Haldensleben coating plant. The line concept was designed such that entire lehr end sizes (glass sheets of 7.00 x 3.30 m in size) can be processed. Annual production of laminated safety glass covers more than a million of square meters in a two-shift system.
The line is fed via portal stacking systems, in a cycle time of 24-30 seconds per lehr end size. Loading can be performed from four different stillage places. The feeding speed on the line is abt.15 m/min.
The glass is thoroughly washed in the washing machine. Prior to the glass entering the washing machine, rotary brushes remove the separating agent from the glass. The glass thickness is automatically measured, and machine parameters are automatically adjusted
3. Laminating Area
The glass sheets are fully automatically assembled with the interlayer, with the interlayer edges being trimmed automatically as well. Since the PVB interlayer is extremely sensitive to temperature and humidity, and each grain of dust adversely affects the optical quality, the laminating room is an air-conditioned clean room. Therefore, the interlayers are, product-specifically, stored in air-conditioned rooms.
4. Preliminary Lamination
In the pre-assembly furnace, the so-called pre-assembly is formed from the glass sheets and interlayers in between. To this end, the glass sheets are heated up and compressed by using rolls.
The glass sheets are durably assembled with the interlayer by applying pressure and temperature. By heat, interlayer change to a tough mass, like honey. Liquid goes in the crystalline of glass. This procedure last 3-5 hours. As a result, a finished laminated safety glass sheet is produced.
Following the autoclave process, the glass sheet is 100 % visually inspected. The laminated safety glass is then unloaded by a portal stacker.