| 摘要 |
An extruded roof tile (30) has an upper surface (11), which is contoured to give the appearance of a profiled tile and which is, for example, provided by projections (32, 34) extending between the upper and lower edges (13) and (14a) respectively of the tile, and an under surface (12) having a shape which is other than a contoured shape which generally follows that of the upper surface (11) of the tile (30). For example, the under surface (12) may have a shape which corresponds to that of a flat tile. In one method of making the tile (30), a material from which the tiles (30) are made is extruded onto a path which shapes the under surface (12) of tiles (30), the material is compressed to provide the upper surface (11) of tiles (30) with a contoured shape, for example provided by the projections (32) and (34), the under surface (12) of tiles (30) is provided with a shape which is other than a contoured shape which generally follows that of the upper surface (11) of tiles (30) and the contoured appearance of the upper surface (11) of tiles (30) is changed without changing the shape of the under surface (12) of tiles (30).
|
