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Sustainable continuous dyeing with
reduced water, energy and chemistry

WEKO’s latest developments revolutionize the entire dyeing process and make it more sustainable.

Due to the non-contact RotaSpray rotor spray application, dyes and auxiliaries are applied homogeneously on one or both sides. The penetration level can be adjusted by exact dosing of the spray quantity and selection of the correct auxiliaries as required.

Minimum application
Due to a higher formulation with simultaneous low pick-up, the water content and thus the expensive and CO²-intensive drying energy is significantly minimized. Squeezing the material is also no longer necessary.

Create new effects and designs
Non-contact spray dyeing opens up completely new possibilities in fashion design - directly in the dyeing process.
For example, one-sided dyeing or overdyeing without penetration. Multicolor dyeing using several dyes in one liquor or one after the other (dye baths are without contact and remain contamination-free). Deliberate creation of streakiness, vintage or salt&pepper look and much more by varying the spray parameters. Open up new possibilities for your customers.

Lower waste
Due to the larger number of spray points, a homogeneous coloration is produced without longitudinal (tailing) or edge-center edge sequences (CSV). Due to the non-contact application, liquor contamination, different pick-up behavior of the dyes (substantivity) or even possible hydrolysis do not play a role. In particular, the separation of certain processes ensures stable and easily reproducible results.

Small residual bath
After use, only 8 - 25 l of bath must be emptied, but this is not contaminated by the WEKO process and, depending on the type, can possibly be reused.
Especially for large dye baths as in the DENIM slasher area, the water reprocessing plants can also be massively relieved.

  • Application of dye baths
    (Sulfur, Reactive, Disperse, VAT, Pigment, Indigo)
  • Application of fixing, oxidation or other auxilliary agents
    (e.g. hydro-caustic, alkali, cationic fixing, hydrogen-peroxide,…)
  • Contionuous Dyeing processes
    PS² (Pad-Spray-Steam)
    PSB35 (Pad-Spray-Batch)
    CSSB (Cold-Spray-Spray-Batch)
    DENIM Slasher Color-DENIM
    DENIM Slasher Bottoming/Topping
    DENIM S² Overdyeing and single side dyeing
  • Dye classes
    • Reactive
    • VAT
    • Dispersion
    • Sulfur (single and multicolor)
    • Pigment
    • INDIGO

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