Method for producing a windscreen

A method for producing a windshield, the method comprising:

• a) providing a sodium-containing outer pane having a glass transition temperature of Tg1 and a sodium-containing inner pane having a glass transition temperature of Tg2,
• b) applying a functional agent comprising alkali metal ions having a larger cation radius than that of sodium ions within at least one subregion of the outer pane or over a total area of the outer pane and within at least one subregion of the inner pane or over a total area of the inner pane at a plurality of points,
• c) forming defect areas at the points of the outer pane containing the functional agent at a temperature of at least Tg1 and at the points of the inner pane containing the functional agent at a temperature of at least Tg2,
• d) removing the remaining functional agent from the outer pane and the inner pane,
• e) forming a layer stack from the outer pane, a thermoplastic intermediate layer and the inner pane and
• f) laminating the layer stack to form a windshield.