Treatment of substrates for improving ink adhesion to substrates

摘要

Printed substrates and methods for treating substrates to improve the adhesion of an ink composition to a hydrophobic substrate are provided. The printed substrates include are treated with a surfactant, for example an ethoxylated hydrogenated castor oil or sorbitan monooleate. The method involves contacting at least a portion of a hydrophobic substrate with a composition that comprises an ethoxylated hydrogenated castor oil or sorbitan monooleate or a mixture thereof; and then printing a pattern or other indicia on at least a portion of the portion of the hydrophobic substrate that was contacted with surfactant.