Another modification of friction spinning is that the sliver is drafted into a center core of fibers which is then wrapped by other fibers. It is possible to add filament fibers to the center core.

• 磨擦纺纱的另一个改进是将条子牵伸成一个由纤维构成的纱芯,然后用别的纤维将其包缠起来。芯线可以使用长丝纱。