| 摘要 |
The polymeric sheet, e.g. rigid PVC and incompatible lithographic ink or electrographic toner have a primer layer interposed between them or the ink layer is encapsulated between two primer layers. The primer may be solvent or aqueous based, and preferably includes a benzene derivative, ketone, acetate or nitroparaffin solvent or film former. If aqueous based, the primer includes an organic solvent or film former. Preferred solvents include methyl isobutyl ketone, methyl ethyl ketone, n-propyl acetate, isopropyl acetate, and N-methyl-2-pyrrolidone. To deter dot distortion of the ink, the primer has a glass transition temperature (Tg) of at least 60 DEG C, and preferably at least 100 DEG C. Examples are given of sheets applied to limestone-filled tile material to make floor tiles. |
