Why spinnerets only used for nylon?

Spinnerets are not exclusively used for nylon; they are essential in the production of various synthetic and natural fibers. In the case of nylon, spinnerets extrude the polymer solution through tiny holes to form filaments. This process is crucial for creating consistent fiber diameter and properties. While spinnerets are commonly associated with nylon production, they are also utilized in the manufacturing of other materials like polyester and rayon.