From the experimental data it has been observed that the stiffness of
the denim was decreased both in the warp and weft way after chlorine
bleach wash as the sizing materials were removed from the fabric due to
desizing following several times washing. During the manufacturing of
woven fabric size material is applied to the warp yarn to make it strong, stiff
for facilitating the weaving process (Siddique, Begum, Islam & Ahmed,
2013). Softening is another basis of decreasing the bending length or
stiffness