Burnout and Devore Effects on Blended Knits
Burnout printing dissolves one fibre from a blend to leave sheer patterns, creating texture that plain printing cannot reproduce.
This guide explains the underlying principle, the numbers that matter and the checks that keep results consistent.
Chemistry behind burnout
A printed paste destroys cellulose fibres while leaving polyester intact, so the choice of blend defines the effect.
Experience shows that small specification decisions here have an outsized effect on the customer experience.
Blend selection
Polyester and cellulose blends in ratios around 60/40 give the clearest pattern definition and stable fabric strength.
Review the limits each season against actual performance data instead of carrying the same figures forward indefinitely.
- Ask for a separate price line for the requirement
- Confirm minimum quantities before committing the colourway
- Build one extra approval round into the calendar
Pattern design rules
Large open areas weaken the fabric, so burnout artwork must respect the strength left in the remaining yarns.
Log adjustments and their reasons, which turns each production run into useful data for the next one.
Processing control
Paste concentration, dwell time and washing off determine how much fibre is removed and how crisp the edges are.
Verify with an accredited test on production fabric rather than a development sample, and repeat the test after laundering.
- Confirm the numeric range and the test method in the specification
- Keep an approved physical standard at the machine
- Retest after the agreed care regime before shipping
Testing after treatment
Check tear strength, appearance after washing and colour effects where the burnout area takes dye differently.
Ask for the cost of the requirement to be shown separately, so it can be weighed against the benefit it delivers.
Summary
A clear specification, a trained operator and a documented test together remove most of the risk from this part of the programme.
