| 摘要 |
A panel having a glass substrate (1), carries a transparent polyester powder - coating (2) with images (5) printed on its back surface (4) for viewing through the glass. A coloured polyester powder-coating (6) covers printed surface (4) and is backed by metal foil (7). Manufacture involves heating polyester powder deposited on a silane-treated surface (3) of the glass (1), to form the coating (2) about 70 % cured. Images (5) are printed on surface (4) using a colour-separation process with ink having u.v. - and thermo-curi ng properties, the ink being u.v. cured after each printing step of the process . Heat applied to cure polyester powder of coating (6), also thermo-cures the ink (5) and completes curing of coating (2). The foil (7) is brought into contact with the melted powder of coating (6) to bond it to the coating (6).
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