Principle of Chain Stitch Formation • Chain stitch is made by using one or more group of threads. • The stitch which is formed by two or more group of threads is called multi thread chain stitch. • In this stitch, the loop of one group threads is bounded by interlooping with loop of another group of threads. Interlooping two types of threads to form chain stitch Stitch type -401 is multithread chain stitch and the followings are the steps referred as the principle of stitch type-401 formation: Step-1 • Needle is entered through the fabric with the thread & reaches to it’s lowest position. • Needle rises to form loop and looper starts forward. • A new loop is formed when needle moves upward a little. • Looper enters needle thread loop. Fig : Step-1 Step-2 • Needle rises and looper passes fully into loop. New loop is caught by the looper (above the needle eye below the old loop). • Feed moves material to the next stitch position and looper swings to other side of needle with avoiding motion. • Needle descends through triangle. • Interlacement is occurred under the fabric (between the new loop & old loop). • In that time fabric is also moved one stitch forward, due to feed dog mechanism. Principle of Chain Stitch Formation Fig : Step-2 Step-3 • The looper enlarges the new loop. So that the needle again entered through the fabric, it passes through the loop. • Needle continues rise and looper starts its return stroke. • The looper leaves the loop, which held on the needle blade. This loop now becomes the old loop. Principle of Chain Stitch Formation Fig : Step-3 Thanks to All . Principle of Chain Stitch Formation • Chain stitch is made by using one or more group of threads. • The stitch which is formed by two or more group of threads is called multi thread chain. chain stitch. • In this stitch, the loop of one group threads is bounded by interlooping with loop of another group of threads. Interlooping two types of threads to form chain stitch Stitch. form chain stitch Stitch type -401 is multithread chain stitch and the followings are the steps referred as the principle of stitch type-401 formation: Step-1 • Needle is entered through the