Sisal fiber made from the process of Decortication, leaves are crushed and beaten by a rotating wheel set with blunt knives, so that only fibers remain. The other parts of the leaf are washed away by water. Decorticated fibers are washed before drying the sun or by hot air. The fiber quality depends upon moisture content so proper drying is important. To get better grades of fiber artificial drying has been found in place of sun drying. Dry fibers are machine combed and sorted into various grades, largely on the basis of the previous in-field separation of leaves into size groups.

 A sisal fiber in cross-section is built up of about 100 fiber cells. Figure The cell walls consist of several layers of fibrillar. In the primary wall, the fibrillar have a reticulated structure. In the outer secondary wall , which is located inside the primary wall, the fibrillar are arranged in spirals with a spiral angle of 40° (for sisal fiber) in relation to the cell. The fibrillar in the inner secondary wall of sisal fibers have a sharper slope, 18° to 25°. The thin, innermost, tertiary wall has a parallel fibrillar structure and encloses the lumen. The fibrillar are, in turn, built up of microfibrillar with a thickness of about 20µm. The microfibrillar are composed of cellulose molecular chains with a thickness of 0.7µm and a length of a few µm