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OwnerArides GARCIA DE LUNA, Matheus MALAFAIA LUNAinventors
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The present invention is a press-printing method for image transfer with a specially coated paper and sublimation ink, in which a pattern or image is printed on a paper coated with the special coating for subsequent transfer to the object to be printed. When used in an ink jet printing, screen printing, gravure printing or flexographic printing process, the coating prevents the printed ink from permeating the paper due to paper porosity. The image transfer from the coated paper to the object to be printed is performed by pressure and heat at a temperature between 200° C. and 230° C., wherein the coating is activated by the heat, so that the coating becomes soft and adjusts to the printing surface and is easily adhered to it. This allows a direct transfer of the sublimation ink to the contact area of the surface to be printed, which makes the coating superior to other coatings on the market.
A coated paper for use in image transfer in a press printing process, wherein the coated paper has a paper layer and a coating with a composition of 93 wt. % to 98 wt. % corn dextrin, 0.2 wt. % to 0.5 wt. % soda, 1 wt. % to 3 wt. % borax and 1 wt. % to 2 wt. % sodium chloride, wherein the coating composition has a viscosity between 3000 and 6000 CP and is arranged in a layer with a surface weight of 8 g/m2 to 12 g/m2 on the paper layer, wherein the paper layer has a surface weight of 50 g/m2 to 80 g/m2 and residual moisture of the coating is in a range of 5 wt. % to 7 wt. %.
Dependencies are inferred from the claim text.