Application: Apparel (innerwear, outerwear), medical care, vehicles, industrial materials
The bobbin is set into a rotating shaft referred to as a spindle.
Polyurethane elastic fibers are passed through the hole of the spindle from the downward direction, and the polyurethane elastic fibers are twisted in the right direction (Z) and the left direction (S) to the core, respectively.
This is referred to as "covering" since the yarn which was wounded quantitatively in the process of "bobbin winding" wraps the core yarn like a sheath.
