Uptwisting
Beschreibung
Increasing the twist of a single end yarn to make it more resistant.
Typical operation to make warpyarn more resistant against breakage of filaments. If filaments are broken, they will move less easy and avoid so thicknesses in the yarn that would cause yarn breakage.
A moderate twist will make the yarn rounder and smoother so that even weftyarns can be treated successfully.
Before yarns can be dyed it's often necessary to uptwist the yarn and heatset to reduced residual shrinkage.
We have doubletwist spindles as well as traditional uptwist spindles so that every yarn can be treated under optimal conditions.