Kraft paper is tough and water-resistant packaging paper, brownish yellow, very versatile, commonly used in the production of paper bags, envelopes, operating books, record sets, dossier and sandpaper. The quantification range is 80 g/m2 to 120 g/m2, with the difference between single-sided light, double-sided light, and stripes in web and flat paper. The main quality requirements are flexible and strong, high burst resistance, can withstand greater tension and pressure does not break. Kraft paper has high tensile force, such as single light, double light, stripes, and no grain. Mainly used for packaging paper, envelopes, paper bags, etc.