| 摘要 |
A lampshade includes a self supporting backing member constituted of an extruded oriented polystyrene and an additive including a light-reflecting powdered filler, 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. |
