Abstract: A windshield trim molding is affixed to the peripheral edge of an automotive windshield during the manufacturing process of mounting the windshield on an automobile chassis. The windshield molding incorporates an extruded strip of elastomeric material, such as ALCRYN or RAUPREN melt-processible rubber, at the contact surface of the molding where a windshield primer is applied to the glass prior to the installation of the molding. As a result, the elastomeric material becomes bonded to the windshield glass, rather than the plastic molding. The strip of extruded elastomeric material is softer than either the windshield glass or the plastic molding and absorbs any failure due to differences in thermal expression rates between the plastic molding and the windshield glass, thus preventing spalling at the peripheral edge of the windshield.

Abstract: A windshield trim molding is affixed to the peripheral edge of an automotive windshield during the manufacturing process of mounting the windshield on an automobile chassis. The windshield molding incorporates an extruded strip of elastomeric material, such as Alcryn or Ralpryn, at the contact surface of the molding where a windshield primer is applied to the glass prior to the installation of the molding. As a result, the elastomeric material becomes bonded to the windshield glass, rather than the plastic molding. The strip of extruded elastomeric material is softer than either the windshield glass or the plastic molding and absorbs any failure due to differences in thermal expansion rates between the plastic molding and the windshield glass, thus preventing spalling at the peripheral edge of the windshield.