| 摘要 |
A depth-changing pattern for simulating a wood grain appearance is debossed on strip material, such as a metal or steel sheet, by longitudinally feeding the strip material past a debossing drum having upraised protrusions with transversely-varying depths that impact the surface of the strip material, forming depressions in the surface as the sheet is pulled past the debossing drum. As the sheet material is pulled through the debossing drum assembly, it is moved in a direction parallel with the rotational axis of the debossing drum and transverse to the direction of material feed, thereby creating a random or non-repeating and depth-changing pattern. The strip material may then be subjected to further processing steps such as forming, coloring and staining to produce an article having a realistic wood grain appearance. |
