Pretreatment and Dyeing of Polyester Piece Goods
Thorough pretreatment before dyeing is the basis for a level dyeing result and for producing consistently high quality. With conventional finishing processes any preparations or sizes are removed from the piece goods before dyeing. The piece goods are firstly washed and desized in a separate pretreatment step. The goods are often dried in between. Then the polyester is dyed with disperse dyes on HT beam dyeing machines, HT jiggers or jets.
Single-Bath Dyeing of PES Grey Goods with PERILAN MPE conc.
When dyeing PES grey fabric in a lean single-bath process with PERILAN MPE conc. there is no separate pretreatment process needed. Pretreatment and washing processes are combined with dyeing. This process optimization helps you to save time, energy, water and costs. The LEAN single-bath process thus offers economic and also environmental advantages.
PERILAN MPE conc.: Multifunctional Product for Dyeing PES Grey Goods
PERILAN MPE conc. is a low foaming, multifunctional auxiliary, which contains all components required for washing and disperse dyeing. Only the pH value needs to be adjusted and the dyestuff has to be added. PERILAN MPE conc. functions at the same time as:
- detergent
- dispersing agent
- levelling agent
- crease inhibitor
Only the pH value needs to be adjusted and the dyestuff has to be added.
The One-Bath LEAN Dyeing Process
In LEAN one-bath dyeing processes PERILAN MPE conc. is used in so-called prerun processes. Firstly, the fabrics are treated with PERILAN MPE conc. at 60 °C. Subsequently, the pH value of the liquor is adjusted to slightly acidic with our buffering system PERISTAL CSL and the disperse dyes are added. Then the dyeing liquor is heated slowly to 130 °C followed by dyeing for 30 to 60 minutes. Aftertreatment – rinsing and reductive clearing – is carried out according to the conventional process.
Suitable for All Machine Types
The single-bath dyeing process of grey PES fabrics with PERILAN MPE conc. can be carried out on all types of dyeing machines. It is even suitable for HT beam dyeing machines at quite short liquor ratios. The product is low-foaming and improves the gliding properties of the textile fabric. Thus, it leads to optimum fabric displacement and can even be used in rope dyeing processes on jet machines with high mechanical action. With PERILAN MPE conc. you can achieve level dyeings with uniform fabric appearance even with a high machine load.
Sustainable LEAN Processes Provide Benefits
Textilchemie Dr. Petry recommends modern, sustainable LEAN Processes for many applications in textile finishing which provide advantages in process engineering. Compared to classical methods our LEAN Processes offer ecological and economic benefits.
The LEAN Processes of Textilchemie Dr. Petry
Our LEAN Processes are characterized by:
- Less time
- Economical processes
- Advanced chemistry
- New technologies
LEAN Processes for Finishing of Polyester Textiles
LEAN Processes applied in finishing of polyester textiles include:
- Rapid dyeing of polyester with PERIGEN E-PES
- Grey dyeing of polyester with PERILAN MPE conc.
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If you are interested in our LEAN processes, please contact our specialists by e-mail or use our online contact form.
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- Sylvia Palikowski
- Application technology
- +49 7121 9589-24
- sylvia.palikowski@drpetry.de