| 摘要 |
A lampshade (20) includes a self-supporting backing member (40) constituted of an extruded oriented polystyrene and an additive including a light-reflecting powdered filler (44), especially titanium dioxide, co-extruded with the oriented polystyrene and weighing in the range of 1% - 10% of the total weight of the polystyrene. A fire-retarding filler, for example, antimony oxide, is also co-extruded. <IMAGE> |
