HY742 double twister is using in double-ply and manifold yarn twisting, it is multi-motor double twister which controlled by microcomputer.

Doubles twists twisting when can realize yarn twisting four number of twists, yarn tensity small, the production efficiency is high, can enhance Cheng Sha the output quality;

The result shows that the lightness and colour saturation of the yarn vary with the twist according to the rule of negative exponent, and its hue of colour increases slightly.