Kraft paper is a tough, water-resistant packaging paper, brown-yellow, widely used for making paper bags, envelopes, workbooks, record cases, file books and sandpaper. The quantitative range is from 80 g/m2 to 120 g/m2, with the difference of single, double and striped in the roll paper and flat paper. The main quality requirement is flexibility and firmness, high breaking resistance, can withstand greater tension and pressure without breaking. Kraft paper has high tension, single light, double light, stripes, no lines, etc. Mainly used for wrapping paper, envelopes, paper bags and printing press roller lining.