| 摘要 |
PURPOSE:To transparentize OHP paper by heating and/or pressing treatment after the printing due to a printer by applying a solution prepared by dissolving plastic in a solvent to a base material composed of a transparent plastic film and subsequently subjecting the coating layer to wet coagulation to provide a porous plastic layer. CONSTITUTION:A transparent plastic film is used as a base material and a solution prepared by dissolving plastic in a solvent is applied to the base material at first and the coating layer is subsequently subjected to wet coagulation. As the plastic, an unsaturated copolymerized polyester resin can be suitably used and, in this case, dimethylformamide is most pref. as the solvent. The base material coated with this coating solution is immersed in water being a coagulation solution to coagulate the plastic. Since OHP paper obtained by finally drying the coated base material is white and opaque from appearance and the surface layer thereof is porous, the OHP paper is excellent in ink absorbability and has good printability. When this paper is heated after printing is applied thereto by a printer, it can be transparentized. |
