Packaging paper with improved mechanical and oil absorption properties based on novel ingredients.

A novel cost‐saving coat was applied on paper sheets to enhance their air, water vapor, and oil resistance to be used in the packaging purposes. This coat is based on new ingredients including core‐shell pigment CoO.ZnO/SiO2, which is composed of silica fume waste comprising 80% of the new pigment covered with the chemically and thermally stable binary oxide of CoO.ZnO with very low cobalt oxide content. This pigment was bind to the cellulosic fibers using sodium alginate, which is now broadly used due to its high oil resistance and enhanced grease proof properties. The addition of this novel coat to paper sheets changed drastically their mechanical and barrier properties rendering them with higher air, water vapor, and oil resistance. [ABSTRACT FROM AUTHOR]