Gassed cotton yarn (yarn singeing)
Also known as: Gassed yarn, Singed yarn, Yarn singeing, Flame-gassed cotton
Cotton yarn is passed through open gas flames so that protruding fibre ends burn off — result: smoother, shinier yarn without fuzz.
Description
Gassing (also called yarn singeing) is a finishing step for cotton yarns in which the spun yarn is drawn at high speed (300–800 m/min) through one or more open gas flames. All protruding fibre ends burn off instantly, giving the yarn a much smoother, shinier and more even surface. The core fibre itself is largely unaffected by the brief flame contact.
Gassed cotton is the classic preparatory stage for mercerised cotton: gassing produces the smooth surface, mercerisation with caustic soda then adds silky lustre and dye affinity. Yarns advertised as "gassed & mercerised" or "double-mercerised" are used in premium polo shirts (Lacoste, Sunspel), business dress shirts, fine-gauge knitwear and twisted sewing threads.
- Higher tensile strength thanks to reduced surface friction
- Shinier, silkier appearance — key for two-fold yarns and polo pique
- Less pilling due to removal of surface fibre ends
- Standard preparation step before mercerising and sanforising
Properties
| Process | Open gas flame, yarn passed at 300–800 m/min |
|---|---|
| Effect | Smooth, shiny yarn surface, less pilling |
| Combination | Usually followed by mercerisation — "double-mercerised" |
| Application | Polo pique, dress shirts, fine knitwear, sewing threads |
Related product categories
Sources & references
2- Wikipedia: Singeing (textiles) Wikipedia — Freie Enzyklopädie https://en.wikipedia.org/wiki/Singeing_(textiles)
- TextileLearner: Yarn Singeing Process textilelearner.net https://textilelearner.net/yarn-singeing-process/
