**5.3.3 Fabric shear property**

Fig.25 shows shear rigidities of gray and finished fabrics with various looms.

Shear modulus of gray fabrics like bending rigidity showed the variation according to the weaving looms as shown in Fig.25, i.e. High weaving tension makes shear modulus of gray fabric high, i. e. shear modulus of gray fabrics ( ) woven by Picanol (air-jet and rapier), which showed low warp tension during weaving, were lower than those of gray fabrics woven by other rapier looms (Thema, FAST) and projectile (Sulzer) as shown in Fig.25. But these variations disappeared after finishing, then shear modulus of finished fabric between continuous ( ) and discrete ( ) finishing showed large difference. These phenomena demonstrate the importance of finishing process to the fabric shear property, which can be compared to the importance of weaving process to the fabric bending property.

Fig. 25. Shear rigidities of gray and finished fabrics with various looms.

Fig. 26. Coefficient of friction of gray and finished fabrics with various looms.
