The difference between kraft paper and paper bag paper Although paper bag paper is similar to kraft paper, most of it is produced with softwood kraft pulp. In China, it is also produced with some bamboo pulp, cotton stalk pulp, and rag pulp. Therefore, paper bag paper has good mechanical strength and can be used as a packaging bag for cement, pesticides, fertilizers and other industrial products. At the same time, in order to be suitable for filling, the paper bag paper is required to have a certain degree of air permeability and greater elongation.