Fully automatic encapsulation of automotive windows

Windows for automotive vehicles must meet a wide range of requirements. They must ensure good visibility, meet the design requirements of manufacturers and customers and function without failure for many years under extreme temperatures and weather conditions.

Decorative trims and panels must also be integrated. For this purpose, the windows are encapsulated with plastics and corresponding elements are injected for later alignment in the vehicle and for attaching additional elements. Various thermoplastics and elastomers such as PUR, PVC, TPE or EPDM are used. To ensure a bond between glass and plastic, a primer is applied to the glass areas that will later be encapsulated. The primer is a liquid medium with a limited processing time, which is thermally activated in advance. The application must be very precise, as the glass parts to be encapsulated must be completely covered with primer, but no primer may "protrude" for optical and quality reasons.