Method for making window panel units having in situ extruded frames

A method of manufacturing a panel unit comprising a panel and a directly extruded molding having a predetermined ideal outer dimension, even if the external dimension of the panel varies from an ideal external dimension, comprising:

• extruding a molding material from a molding die directly onto a peripheral edge of the panel by moving either one of the panel and the molding die with respect to the other of the panel and the molding die so that the peripheral edge of the panel moves along a predetermined path with respect to the molding die, wherein the predetermined path defines the ideal outer dimension of the directly extruded molding,
• stopping the extrusion of the resin molding material when the directly extruded molding is formed along almost the entire peripheral edge of the panel, and
• eliminating an irregular portion of the directly extruded molding,
• wherein the directly extruded molding has the ideal outer dimension, irrespective of the external dimension of the panel, and a gap is formed between a first and a second terminal end of the directly extruded molding.

A method of manufacturing a panel unit including a window glass panel, and a frame mounted on a peripheral edge of the window glass panel, comprising:

• providing a molding die having an extrusion port for extruding a molding material to form the frame, wherein the extrusion port has an inner circumferential surface that corresponds the cross section of the frame,
• disposing the peripheral edge of the window glass panel proximally with respect to the extrusion port in order to form a molding space defined by the peripheral edge of the window glass panel and the inner circumferential surface of the extrusion port, wherein the molding space corresponds to the cross section of the frame;
• extruding the molding material into the molding space;
• continuously moving either one of the window class panel and the molding die with respect to the other of the window glass panel and the molding die so that the peripheral edge of said window glass panel moves along a predetermined orbital path with respect to the extrusion port of the molding die, thereby forming a directly extruded molding,
• stopping the extrusion of the resin molding material when the directly extruded molding is formed along almost the entire peripheral edge of the panel, and
• eliminating an irregular portion of the directly extruded molding, thereby forming the panel unit having a predetermined external dimension
• wherein a gap is formed between a first and a second terminal end of the directly extruded molding.