| 摘要 |
A mirror comprises a transparent glass sheet having a reflective metal coating deposited on the glass and a protective coating applied to the reflective coating, characterised in that the protective coating comprises a paint having a residual internal stress SR equal to or less than 1 MPa, measured by cantilever method, at a temp. above its Tg. Mfr. of the mirror comprises applying the paint by means of a curtain coating appts. through which the glass sheet is conveyed at a controlled uniform speed and in a horizontal plane with the reflective metal coating uppermost and in which a continuous film curtain of paint falls under gravity to deposit a uniform layer of paint on the reflective metal coating. The paint achieves its final strength as soon as it leaves any furnace used in the mfr. of the mirror. |
