Consumed sewing thread behavior for knitted fabrics using factorial design method

This study investigates experimentally the influence of key parameters on sewing thread consumption.Eight knitted fabrics with different plain structures and thicknesses are tested by sewing two layers using a chain stitch type 401.The effects of sewing machine foot pressure, needle thread tension and fabric thickness on the consumed sewing thread have been investigated.It is concluded that an increase in the foot pressure height increases sewing thread consumption, as well as the fabric thickness.However, increasing the needle thread tension decreases the sewing thread amount.Using the multilinear regression method, good relationships (regression coefficient close to 1) between thread consumption behaviours and the investigated parameters are observed.