Abstract:
During different manufacturing processes as the yarn drawn foreword at a certain linear velocity, the portion of the yarn between the package and guide eye necessarily attain an angular velocity, through it is rotation about the package axis which causes the yarn to fly out and form characteristic balloon. This affect the tension in the yarn as it is passes through the guide and this affect the product quality and causes some problems during the process. This project explains the three modes of unwinding, balloon physics and show that factors affect the balloon diameter are:
Guide distance.
Cone angle.
Package diameter.
Winding tension.
Yarn count.
Unwinding speed.
