| 摘要 |
1487969 Coated decorated glass articles ANCHOR HOCKING CORP 16 Jan 1975 [7 Feb 1974] 1953/75 Heading B2E A method of decorating and coating a glass article (e.g. a bottle) comprises: applying to a surface of the article a decoration of a thermoplastic ink which is solid at room temperature, the ink being heated to be screen-printable on application, the article being cool to solidify the coating; coating the ink and the surrounding article surface with a polymer which is fusible. at or above the temperature at which the ink becomes screen-printable; and heating the article to fuse the polymer and form a coating film of the polymer, whereupon the ink diffuses into the polymer film but not as far as the outer surface of the polymer film. In a modification the article is heated to melt the ink decoration before the polymer particles are applied. The glass may be precoated with a TiO 2 or SnO 2 layer and an olefinic lubricious layer. The ink may be formed by the addition of a dye and/or a pigment (e.g. Cr 2 O 3 or TiO 2 ) to a wax (e.g. carnauba, paraffin, microcrystalline or bees' wax), palmitic or stearic acid, or a solid soap. Several coats of inks in different patterns may be applied sequentially. Suitable polymers for overcoating include ethylene/ methacrylic acid copolymers, polyethylene, p.v.c., and ethylene/vinyl acetate resins. Particles of resin overcoating may be applied by spraying, preferably electrostatic spraying, or by fluidised bed, or electrostatic fluidised bed. Alternatively emulsions may be sprayed. |
