A paper packaging material, and method for manufacturing it, having a paper layer with a polyethylene coating on one surface, a biodegradable resin grid on the opposite surface to enhance its strength while maintaining reduced weight and a thermo-sealing resin, which eliminates the use of glues in the packaging process. The vegetal resin is made out of vegetable wax, acrylic styrene copolymer, demineralized water, water based silicone and natural fungicide. The method includes the steps of printing graphics on one side of the web, drying the paper, applying a vegetal resin on the other side and a film of polyethylene on the top of the printed side. Thermo-sealing varnish is applied in predetermined areas.