| 摘要 |
A laminated windshield is disclosed having a heater unit in which heating wires 113, 213 are connected to an external source of electrical power by means of electrically conductive ribbons 120, 220. Each of the ribbons 120, 220 has first and second portions 122, 222; 123, 223 joined together by a third portion 124, 224. The third portion 124, 224 of each electrically conductive ribbon 120, 220 extends through a respective slit formed in a plastic laminating interlayer 117, 217 interposed between and bonded together with two panes of glass 115, 116; 215, 216. The third portion 124, 224 of each electrically conductive ribbon 120, 220 is sealed to the plastic laminating interlayer 117, 217 during manufacture of the laminated windshield so that no leak path is present between an outer periphery of the laminated windscreen and the heating wires 113, 213. A polymer insulation may be applied to the ribbon in the region 123,223. The interlayer may be polyvinyl butyral (PVB). Alternative materials disclosed are Ethyl Vinyl Acetate (EVA) or thermoplastic Polyurethane (TPU). |
