Abstract: The invention was made in order to provide a multi-color printing method of a plastic film wherein multi-color print can be made fast without requiring complex operations, while functions of the anchor-coating layer and the shielding are ensured sufficiently, and provides a method of multi-color printing on a plastic film, which comprises an anchor-coating process wherein an anchoring agent is applied to the plastic film by a gravure roll to form an anchor-coating layer which acts as receptive layer to multi-color inks, a multi-color printing process wherein multi-color print is provided on said anchor-coating layer by continuous ink jet printers, a shielding layer-coating process wherein a titanium white ink is applied to said multi-color print by a gravure roll to form a shielding layer, and drying processes being provided after said anchor-coating process, multi-color printing process and shielding layer-coating process, respectively, and an apparatus therefor.

Abstract: The invention was made in order to provide a multi-color printing method of a plastic film wherein multi-color print can be made fast without requiring complex operations, while functions of the anchor-coating layer and the shielding are ensured sufficiently, and provides a method of multi-color printing on a plastic film, which comprises an anchor-coating process wherein an anchoring agent is applied to the plastic film by a gravure roll to form an anchor-coating layer which acts as receptive layer to multi-color inks, a multi-color printing process wherein multi-color print is provided on said anchor-coating layer by continuous ink jet printers, a shielding layer-coating process wherein a titanium white ink is applied to said multi-color print by a gravure roll to form a shielding layer, and drying processes being provided after said anchor-coating process, multi-color printing process and shielding layer-coating process, respectively, and an apparatus therefor.

Abstract: In an oven used for printing machine and the like, drying is rendered possible to be conducted without decreasing traveling speed (120 m/min or more) by a short and compact drying zone for a coating liquid agent which is made aqueous as well as oily coating liquid agent. A plurality of hot air blow-off nozzles 222 are provided in the drying portion 220 of the first printing unit 200. Heating guide rolls 223a are provided at the former portion, and cooling guide rolls 223b are provided at the latter portion, so that they meet the hot air blow-off nozzles 222. Liquid delivery pipes 224a for injecting hot water are connected to the heating guide rolls 223a, and liquid delivery pipes 224b for injecting cooling water are connected to the cooling guide rolls 223b. Introduced raw web 1 is heated to the boiling point of solvent or higher than that by the heating guide rolls 223a.

Abstract: [Problems] In an oven used for printing machine and the like, drying is rendered possible to be conducted without decreasing traveling speed (120 m/min or more) by a short and compact drying zone for a coating liquid agent which is made aqueous as well as oily coating liquid agent. [Solving Means] A plurality of hot air blow-off nozzles 222 are provided in the drying portion 220 of the first printing unit 200. Heating guide rolls 223a are provided at the former portion, and cooling guide rolls 223b are provided at the latter portion, so that they meet the hot air blow-off nozzles 222. Liquid delivery pipes 224a for injecting hot water are connected to the heating guide rolls 223a, and liquid delivery pipes 224b for injecting cooling water are connected to the cooling guide rolls 223b. Introduced raw web 1 is heated to the boiling point of solvent or higher than that by the heating guide rolls 223a.