An antimicrobial finish stops bacteria growing on the fabric, and with them the smell of sweat. We apply it in the dyeing machine after dyeing. Here is the process and what to watch.
At a glance
pH 5.0–5.5Bath
40°C × 30 minExhaust
After dyeingIn the machine
Machine or stenterExhaust or padding
Antimicrobial (anti-odour) finishes stop bacteria from growing on the fabric. Bacteria break down sweat, and that is what makes sportswear, socks and underwear smell. Buyers ask for it on activewear, base layers and some basics, usually with a test standard and a number of washes it must survive.
In the dyeing machine
- Finish the dyeing and wash-off as normal.
- Set a fresh bath to pH 5.0–5.5 with acetic acid.
- Add the antimicrobial agent and run at 40°C for 30 minutes.
- Drain and unload. No rinse, so the finish stays on the fabric.
On the stenter
- It can also be applied on the stenter, by padding.
- The dyed fabric is dried first. Then, on a second stenter pass, the antimicrobial chemical goes on from the padding trough, and the fabric is finished.
Buyers who ask for an antimicrobial finish usually name a test standard and a number of washes the finish must survive. Agree both before bulk, and test after washing, not only on the fresh fabric.
Textile engineer with 14+ years in dyeing and fabric development. He writes every guide on Dyeing Solution from real production work. Full profile