Process and apparatus for manufacturing frame with groove for use with panel

A process for manufacturing a frame with a groove such as a molding for use with a panel such as a windshield of an automobile, comprising the steps of:

• providing a dummy panel having an outer configuration and a thickness equal to those of said panel;
• providing molding die means having an extrusion port for extruding a molding material to form a molding product;
• engaging a part of the peripheral edge of said dummy panel into said extrusion port of said molding die means;
• continuously extruding said molding material from said extrusion port of said molding die means;
• continuously moving said extrusion port of said molding die means along the peripheral edge of said dummy panel by providing three-dimensional relative movement between said molding die means and said dummy panel so that said molding product is continuously formed over the entire length of the peripheral edge of said dummy panel;
• and
• stripping said molding product from the peripheral edge of said dummy panel to obtain said frame with a groove, the groove being closely engageable with the peripheral edge of said panel.