APPLICATION 03
Carboxymethyl Starch for Disperse Printing
Disperse printing on polyester needs a paste that carries the dye evenly into the fibre and washes off cleanly after fixation When evaluating carboxymethyl starch for this process share the fabric dye and fixation conditions recipe required powder or flake form and target viscosity KARN will use this information to arrange sample and TDS confirmation no grade is pre assigned on this page
How to evaluate carboxymethyl starch for disperse printing
For disperse printing on polyester evaluate CMS for how evenly the paste carries the disperse dye into the fibre the colour yield after fixation and how completely the paste washes off Prepare a trial with the actual fabric dye and fixation conditions record whether powder or flake is required and the target viscosity or test method Grades K5 K6 or K9 differ in raw material DS level and confirmed viscosity range the final grade and form require a representative sample and the current TDS
Process suitability
- Record the dye and fixation steaming or baking conditions
- Check paste penetration and colour yield on the trial print
- Confirm wash off behaviour before production
CMS grades available for confirmation
Listing does not confirm suitability for this process Validate the grade with a sample and the current TDS
Continue the CMS procurement evaluation
Disperse evaluation information to send
- Candidate K6 K5 K9 grade or grade not yet selected
- Raw material DS and sample or batch reference
- Powder or flake form
- Actual fabric construction and polyester type or blend ratio
- Disperse dye class colour and whether the shade is used alone or with reactive dyes
- Actual print method screen or equipment conditions and pattern coverage
- Complete print paste recipe context including CMS loading pH control agents anti reducing agents and other auxiliaries with actual amounts where disclosure is possible
- Target paste viscosity and the measured CMS result with its method
- Paste preparation water mixing hydration holding and measurement conditions
- Fixation route and actual temperature time and steam baking or thermosol conditions where used
- Washing rinsing reductive scour if used neutralization if used and finishing sequence
- Current observations for penetration colour yield outline definition staining paste stability and equipment compatibility
- Whether the trial uses polyester or a cotton polyester blend and how dye staining on the second fibre will be assessed
- Acceptance criteria and the procurement decision the trial must support
Independent disperse printing process context
This Cotton Incorporated technical bulletin explains fiber reactive and reactive disperse dye printing on cotton polyester blends and process factors for disperse printing It is background context and does not test KARN grades or prove suitability for a specific production recipe
- Chemistry of Fiber Reactive and Reactive Disperse Dyes in the Printing ProcessCotton Incorporated Technical Bulletin ISP 1015 Copyright 2006Read the Cotton Incorporated PDF
The bulletin connects disperse dye printing on polyester and cotton polyester blends with thickener selection print paste pH control fixation by high temperature steam baking or pressure steam and washing including reductive scour for unfixed dye It describes process factors and example formulations for other thickener systems not KARN CMS
What the source does not establish
The bulletin covers general disperse and reactive disperse printing chemistry and example formulations built around other thickener systems It does not test KARN CMS and does not establish that K5 K6 or K9 or any CMS loading is suitable for a specific polyester blend dye recipe fixation route or washing line Keep the actual buyer conditions on the trial record instead of treating a literature example as a KARN protocol