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Yarn Production

Technofibres was founded in 1969 and produces polyester filament yarn at our site in Luxembourg.

Our company develops and produces spun-dyed polyester POY, which is delivered to our customers after being converted into air-textured or false-twist-textured yarns – also using recycled material. The wide range of flexibility and color variations and the production using small spun-dyed batch sizes is what makes Technofibres stand out as a competent development and production partner. Within the AUNDE Group, there are numerous production sites worldwide which also have on-site texturing capabilities.

Technofibres makes the difference

Almost all polyester yarn manufacturers worldwide produce large finished batches. They mainly produce a standard quality product regarding yarn thickness, raw materials (raw white), and filament diameter (round). The yarn produced in this way is dyed in a subsequent process by bobbin dyeing or so-called piece or fabric dyeing. Disperse dyes (i.e. water-soluble dyes) are used. Approx. 18 liters of water are needed to dye one kilogram of polyester yarn using this method. Energy is also required to heat the dye (up to approx. 130°C) and dry the fibers (after dyeing). 

Yarn produced by Technofibres is dyed using the spin-dyeing process.

This process uses finely ground solid dyes known as pigments. The pigments are embedded in plastic and melted down in a small extruder. The melted polymer is transferred to the polyester melt flow using a dosing pump and then homogenously mixed with the polyester flow by machine. Using this method means that the melt already has the desired color when it leaves the spinneret. Due to their physical and chemical properties, the pigments we use have exceptional lightfastness which is particularly in demand for the production of automobile interiors. This is only one of the many advantages of this process.

Compared to the yarn/piece dyeing process, this process has excellent environmental credentials; it uses far less energy for the coloring process (melted pigment granules) and absolutely no water. Spinneret dyeing is used throughout the world, but only single-color, industrial-size batches. The fibers produced are mainly black.

This is what makes us different:

There are numerous spinneret systems available which are suitable for the economically viable production of very small batches,

Additionally, we offer a wide range of special features for individual yarn design and construction. This allows for the production of yarns made of different raw materials and in small batches, for example

  • Normal polyester types
    • In four different matting grades
    • PBY (elastic) polyester with/without matt finish
  • Recycled polyester
  • Cross-sectional shape of the filament (for all material types): Round, trilobal and octalobal

The technology to provide this range of options for small batches is available for both the production development and production processes.