| 摘要 |
<p>A process for making functional or decorative flakes or platelets comprises applying a multi-layer sandwich of vapor deposited metal (46, 48, 50) and release coats (44) in alternating layers to a rotating chilled drum (36) or suitable carrier medium contained in a vapor deposition chamber (30). The alternating metallized layers are applied by vapor deposition and the intervening release layers are preferably solvent soluble thermoplastic polymeric materials applied by vapor deposition sources contained in the vapor deposition chamber. The multi-layer sandwich built up in the vacuum chamber is removed from the drum or carrier and treated with a suitable organic solvent to dissolve the release coating from the metal in a stripping process that leaves the metal flakes essentially release coat free. The solvent and dissolved release material are the removed by centrifuging to produce a cake of concentrated flakes which can be air milled and let down in a preferred vehicle and further sized and homogenized for final use in inks, paints or coatings.</p> |
