Method for reverse printing on coated tube papers and tubes produced from the paper
AssigneeSonoco Products Company
InventorsEdward H. McMahon, Jr., J. B. Abston
Life of this patent
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Abstract
A method for providing identificational coloration on a paper ply of a yarn tube or similar article, the invention comprises reverse printing of a dye onto a pervious paper which is coated on the outer surface with a transparent polymer coating, the coating being impervious to the dye. According to the invention, the dye penetrates through the paper but not through the polymer coating, the informational coloration and/or pattern of the dye being clearly visible through the polymer coating to allow ready identification of the yarn or other material carried on the tube.
Claims11
In a method for making a yarn tube or similar article comprising a tube body and an outer ply having indicia visible through an outer polymer lamina, the improvement comprising the steps of:
- providing an outer ply comprising a lamina of a relatively porous paper-like substrate with the polymer lamina on one surface;
- providing the outer ply with indicia by printing a dye onto at least a portion of the surface of the substrate opposite the polymer lamina under conditions wherein the dye is caused to be visible at an interface between the substrate and the polymer lamina;
- and
- forming the printed outer ply onto the tube body with the polymer lamina comprising an outer surface of the tube.
Dependencies are inferred from the claim text.