Tuft Blender

Modular tuft blending system T-BLEND

When it comes to fiber blends, top priority is maintenance of the blending ratios. This is only possible with precise weighing. All other indirect procedures are prone to a gradual deviation from the setpoint. Guaranteeing the setpoints today, tomorrow or even a month from now is only possible with weighing.

Only ­Truetzschler has this to offer:
  • Precision mass measurement
  • Auto start: The control finds the optimal parameters in a self-optimising manner
  • Direct measurement of the weight
  • High capacities up to 2,000 kg/h
  • Precise maintenance of blending ratios
  • Blending of up to 6 components per process step
  • Addition of smallest percentages (up to 1 %)
  • Automatic taring, very simple calibration
  • Formula memory for quick lot changes
  • Quality control by means of lot protocols
Precision weighing is the key

Bad product quality at a later production stage wipes out all previous production efforts and is thus a “full cost”. This is the reason why the ­Truetzschler T-BLEND concept for tuft blending relies on a reproducible and precise blending consistency. The self-monitoring system ensures the perfect quality when blending natural or man-made fibers of different lengths, finenesses and colours.

Lot start with self-optimisation of the parameters

Until now, numerous parameters had to be entered before starting a lot. The only information required by the T-BLEND system is the desired blending ratios, the required production height and the assignment of the fibre material to the scales. The ­BLENDCOMMANDER control finds all other setting parameters in a self-optimising manner. These parameters, for instance, include the ideal filling weight per scale and the corresponding filling speed.

Blending quality newly defined

Usually the CV value is mentioned as quality parameter. However, the mass content of each fiber type in the total weight is even more relevant for the blending accuracy. Hence, ­Truetzschler uses specially developed precision scales to measure the mass and not the volume. During each weighing, the small difference to the setpoint is captured and compensated fully automatically during the next weighing. The adjacent diagram shows the serious deviation between CV value and setpoint.

Blending six components in one step

Another advantage of the ­Truetzschler T-BLEND tuft blending installations lies in their flexibility: two to six components can be blended. This results in an application range that covers everything from standard blends (e. g. 50 % cotton / 50 % polyester) to the addition of smallest portions (e.g. 1 % black fibers ) or colour melanges.

Highest quality in harmony with high production rate

The large volume of the weigh pans and the short weighing cycles ensure a high throughput per weighing unit of up to 800 kg/h. One T-BLEND installation is designed for production rates up to 2,000 kg/h.

Bale Opener BL-BO

Due to manual feeding via the feed apron, the BL-BO is very flexible in its application. Additional feeding from the top via a Material Separator BR-MS is also possible. The feed table can be extended. Production rates up to 1,000 kg/h are possible. The BL-BO discharges the material into the weigh pan of the weighing unit.

Waste Opener BO-R

This is the unit for accurate addition of spinning waste such as card or draw frame slivers. These materials are already blended and are therefore added downstream from the Blending Opener BL-TO. Here it is also possible to extend the feed table.

Weighing Unit BL-WP

The weighing unit has been designed for high accuracy and high performance.

  • An innovative three-point suspension prevents vibrations.
  • To prevent unwanted vibrations, the weigh pan is not connected to the feeders.
  • 50 % increase in weigh pan volume.
Blending Opener BL-TO

At the end of the tuft blending conveyor belt, the blending opener takes on the fibers from the conveyor belt, blends and opens them. The four-roll feed unit ensures a high output up to 2,000 kg/h. The large diameter of the needled opener roll ensures gentle opening.

High-Performance Feeder BL-HF

This very space-efficient feeding version can automatically feed productions up to 800 kg/h. The material, for instance, can be provided by a cotton cleaning line or a Portal Bale Opener BLENDOMAT BO-P. The High Performance Feeder BL-HF discharges the material into the weigh pan of the weighing unit.

Precision Feeder BL-PF

This feeder is designed for adding very small blending components in small productions. A typical application example are blends with less than 10 % of a component. The Precision Feeder BL-PF discharges the material into the weigh pan of the weighing unit.

Tuft Blending Conveyor Belt BL-TC

The tuft blending conveyor offers a high volume particularly for bulky fibers. Special elements ensure a very good width distribution even at production rates up to 2,000 kg/h.


Consequent direction controlling quality and economy

  • Precise calibration and fully automatic taring
  • More flexibility, speed and clarity: BLENDCONTROL LC-BC
  • Quality control by means of lot reports

Bale Opener BL-BO for manual feeding
High Performance Feeder BL-HF with automatic feeding
The Waste Opener BO-R is suited for the addition of production waste that has already been blended.
Precision Feeder BL-PF for precision dosing
The weigh pan BL-WP is suspended at three points on a solid frame.
The tuft blending conveyor belt BL-TC has a modular structure. Weighing units can perform 2 to 6 feedings.
The Blending Opener BL-TO delivers the blended tufts usually to a trunk mixe.