The Irisdescent paper is different by copying machine made of fiber with special functions such as single use paper, synthetic fibers, synthetic pulp or mixed pulp and other raw materials, with the modification or processing of different materials, the paper gives different functions and purposes;
Kraft paper is used as a packing material. The strength is very high. It is usually yellowish brown. Semi drifting or full drifting cowhide pulp is light brown, cream, or white. The quantity was 80 to 120g/m2. The fracture length is generally above 6000m. The tearing strength, the rupture work and the dynamic strength are very high. Most of them are roll paper and flat paper. Using softwood kraft pulp as raw material, after the beating, the Fourdrinier machine is made.