The reason for knit fabric shrinkage is its stress relaxation after fabric formation, which means yarn during fabric formation is under stress conditions. Because a manual knitting machine uses a dead weight at the bottom and a computerized knitting machine uses takedowns for pulling the fabric, so yarn during the knitting is an extremely stressful condition each yarn is being pulled at the bottom side. After taking out the fabric from the machine, the fabric will try to relax in both the wales direction and course direction, due to stress relaxation knit fabric shrinkage happens.
Manual Hand Knitting Machine
