Abstract: A plastic material is injected in the fluid state into a flexible closed mold having a molding cavity in which is placed the edge of a glass pane. The plastic material is injected into the cavity of the mold in the inert state and is then activated by high-frequency electromagnetic radiation or by microwave radiation. An insert is placed in the cavity of the mold before the injection of the plastic material. The injection and subsequent hardening of the plastic material are carried out inside the cavity of the mold in which cavity the edge of the glass pane and the insert are arranged in their definitive relative position. Glass panes for motor vehicles having a trim strip or elements such as ducts, cables or fastening screws can be prepared.