Kraftpaper (kraftpaper) is used as packaging material. The intensity is high. Usually yellowish brown. Semi-bleached or fully bleached kraft pulp is light brown, cream or white. Quantitative 80~120g/m2. The fracture length is generally above 6000m. The tear strength, rupture work and dynamic strength are high. Mostly roll paper, but also flat paper. Using kraft softwood pulp as raw material, it is made by beating on a Fourdrinier paper machine. It can be used as cement bag paper, envelope paper, glue seal paper, asphalt paper, cable protection paper, insulation paper, etc.