Are there many steps required to produce polypropylene BCF yarn?

The production route of polypropylene BCF yarn can be divided into the following three types:

One-step method: continuous spinning, stretching, texturing, winding process

Two-step method: spinning and drawing combined with one yarn deformation or spinning and winding together with yarn stretching and deformation

Three-step method: spinning and doffing together with stretching and deformation

The above are the three production processes of polypropylene BCF yarn, the specific differences can only be seen in actual operation.