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Technology

What is Two-for-One Twisting ?

  • Two-for-One twisting is a textile process to improve the quality of yarn.
  • While twisting two or more single yarns are wrapped around each other.
  • This makes the yarn strong and smooth without chemical treatment.

Quality features such as:

  • Optimum cross-wound take-up packages for further processes
  • Better coverage with the same yarn volume and thus less material is required
  • Higher uniformity (doubling effect)
  • Softer thanks to lower bending rigidity
  • Higher elastic resilience (less bulging)
  • Good binding of the edge fibres
  • Higher wear resistance (no pilling)
  • Higher tear resistance
  • Greater water absorbency of the fibres (towels)
  • Less fluffing (domestic dryers and washing machines)

Two-for-One Principle.

Two-for-One Principle

With the Two-for-One twisting system, the thread receives two turns with one revolution of the spindle. To obtain this Two-for-One effect, the protection pot with the untwisted feed package is kept in a stationary position on the spindle rotor by permanent magnets.
The yarn is unwound from the stationary feed package, passes through the hollow axle, the yarn tension device, enters the rotating upper part of the spindle and leaves it through the opening of the spindle rotor.

Between the tension device in the hollow axle and the exit in the spindle rotor, the yarn receives its first turn (1). The yarn circles around the protection pot as a yarn balloon. The second turn (2) is given within the balloon between the spindle rotor and the balloon thread guide.

The apex is the eye of the balloon thread guide.