Page 58 - TEXtalks International July/August 2022

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Revolution in the textile Due to non-contact spray application problems like In DENIM the system is focussing on slasher
tailing, Center–Side variation, substantivity etc. are
applications like Effect-Dyeing, Color-Denim,
bottoming, topping or cold sizing. In fabric stage of
not existing. No tailing at the beginning of dye sets or
industry with minimal after stops. Get an easy-to-operate and stable DENIM it is used in PAd-Steam or stenter frame lines
to realize single side overdyeing,shade corrections,
production with less fabric, dyestuff, chemical and
spray application and energy waste. resin and flat finishing.
benefit of saving energy The system gives you the opportunity of fast color or There is still time to act to significantly reduce your
gas or oil consumption!
shade changes without long machine down times.
The current outlook for the coming months with
In some dye classes a separation from dye bath and regard to getting enough gas and the gas price
chemical bath without intermediate drying is an development is not positive and causes great
additional big step forward. For example in terms of a concern among many textile manufacturers around
classical Pad-Dry-Pad-Steam-washing range you the globe.
easily eliminate 100% the first drying section and
create our well known PS²-process (Pad-Spray- Steam) Use the WEKO minimal spray application technology
for Reactive and VAT dyes. In addition the salt usage in in your dyeing and finishing process. As an example,
light to medium shades is eliminated and in medium the energy requirement for drying in a stenter frame
Single side PFC-free hydrophobic finish.
to dark shades strongly reduced which has a big can be reduced by up to 80%. Talk to our experts
advantage in your wastewater treatment and costing. about the large variety of applications.

Yarn and fabric dyeing with RotaSpray Several Dye classes could be used such as Reactive,
For Dyeing a special, robust and extremely VAT, Sulphur, Pigment, Direct and Indigo on yarn
homogenous Rotor-spray system was developed and sheet or in fabric stage. The system enables you to
produce cost-efficient small lots of even 200 meters.
launched - the RotaDyer series.
German Review

Rotorenträger.

Weitmann & Konrad GmbH & Co. KG founded in Instead of 60-130% pick-up in padding WEKO could
1953 has been developing and producing work with 12-35% pick-up only. A huge saving in
non-contact application systems for product drying energy, water and chemistry is the result as
optimization and surface finishing with different well as higher speed.
types of liquids and powdery substances offering
revolutionary technology to combine a more Also single side application is possible when needed
sustainable process with cost-saving production. and adjusting the penetration level to fabric.

In addition, WEKO took over RotaSpray GmbH in Therefore application and penetration is done only
2021 and fully integrated this Rotor-Spray Dyeing when needed. Most of the finishing applications are
Technology into their portfolio. needed purely on the top surface with very less
penetration e.g. in hydrophobic, soil repellent,
Textile finishing with WEKO hydrophilic, softening, color fixation.
Whether you apply softening, EasyCare, sewability
improvement, water- or soil repellent, flame retardant, The customer can use the systems in knit or woven
color fixing, anti-microbial or hydrophilic agents - the applications with wet or dry fabric processing on a
use of auxiliary and the necessary drying energy is very wide range of fiber types. An integration into
significantly reduced by the exact pick-up control due existing lines like stenter frames, Pad-Steam or
to forced spray application. Coating lines is very easy to do.

July/August 2022