Abstract: A plastic material is injected in the fluid state into a flexible closed mold (2, 3) comprising a molding cavity (6) in which is placed the edge of the glass pane (5). The plastic material is injected into the cavity (6) of the mold in the inert state and is then activated by high-frequency electromagnetic radiation or by microwave radiation. An insert (22) is placed in the cavity (6) of the mold before the injection of the plastic material. The injection and the subsequent hardening of the plastic material are carried out inside the cavity of the mold (6) [sic] in which cavity are arranged, during these operations, the edge (5a) of the glass pane (5), and the insert (22) in their definitive relative position on the glass pane in the shaped state. The invention can be used to produce glass panes for motor vehicles, comprising inserts consisting of trim strips, for a decorative purpose, or of elements such as ducts, cables or fastening screws having a functional purpose.