| 摘要 |
The invention relates to precoated sheets, including precoated metal sheets, each having an appearance of orange peel, and good workability and scratch resistance. The precoated sheet of the invention has a filtered center line waviness curve (Wca) of the outermost surface of coated film of 0.35 µm ‰ Wca ‰ 1.25 µm, and a mean spacing of local peaks of filtered center line waviness curve (Wc-sm) of 2800 µm ‰ Wc-sm ‰ 12500 µm, and has a wavy structure at the interface between the outermost coated film layer and the lower coated film layer. Preferably, the precoated sheet is designed to satisfy the conditions that a wavy curve W revealed when observing the interface between the outermost coated film layer and the lower coated film layer in the section of the film thickness direction (1) comprises a big wave defined as a wave having a region in which A ‰ 0.8B, wherein A is a distance between the outermost surface S of the coated film and the wavy curve W at the interface, and B is an average film thickness of the outermost coated film layer, and (2) has an average distance between the big waves of not greater than 750 µm. |
