Every fabric starts as a fibre. Knowing the fibre tells you how a fabric will feel, drape, wash and last – before you spend anything on it or cut into it.
What you’ll learn
- The four fibre families, and one or two examples of each.
- What each family does well, and where it lets you down.
- Why a blend can be the best of both, or the worst of both.
- How to read a fibre label, and what to ask when there isn’t one.
The four families
- Natural – cotton and linen (from plants), silk and wool (from animals). They breathe well and feel comfortable, but can shrink or crease.
- Semi-natural – viscose (rayon) and modal, made from wood pulp. Soft and flowing, often used to look like silk.
- Synthetic – polyester and nylon. Strong, crease-resistant and easy to wash, but warmer to wear.
- Blends – two fibres together, such as cotton-silk or poly-cotton, to get the best of both.
Semi-natural fibres are also called regenerated or man-made cellulosic fibres. The plant material is natural, but a factory dissolves it and spins it into new fibre. Together, semi-natural and synthetic fibres are the “man-made” fibres.
What each family is good at
| Family | Good at | Watch for |
|---|---|---|
| Natural plant | Cool, absorbs sweat, easy to stitch and press | Shrinks, creases |
| Natural animal | Sheen (silk), warmth (wool), rich colour | Delicate care, insects, water spots |
| Semi-natural | Soft, flowing, takes dye beautifully | Weak when wet, shrinks, can go stiff |
| Synthetic | Strong, quick-drying, keeps its shape | Hot and sticky, melts under a hot iron or flame |
Kannada names you will hear in the market: hatti (ಹತ್ತಿ, cotton), reshme (ರೇಷ್ಮೆ, silk) and unne (ಉಣ್ಣೆ, wool). In Hindi, cotton is sooti and silk is resham.
Tip: always read the label or ask the shop for the fibre content. “Silk-like” and “silk” are not the same thing.
The rest of Module 1 takes each family in turn. Module 6, Test a fabric: burn, water, crush and light, shows how to check a fibre yourself when no one can tell you.
Why it matters before you buy: the fibre decides whether a kurta needs pre-washing, whether a blouse will be cool at a summer wedding, and what heat the iron can take.
In more depth: fibre, yarn, fabric
A fibre is the single hair-like strand: a cotton hair from the seed pod, a silk filament from a cocoon, a polyester filament from a factory nozzle. Fibres are twisted into yarn (thread). Yarn is woven, knitted or pressed into fabric. Then fabric may be dyed, printed and finished.
Each stage changes the result. The same cotton fibre can become fine mulmul or heavy denim. So the fibre tells you about comfort, care and strength, and the weave and finish tell you about look and drape. You need both to choose well. Module 2 covers weaves and knits.
Staple and filament
Short fibres, such as cotton and wool, are called staple fibres. They must be twisted together to make a yarn, which gives a soft, slightly fuzzy surface. Long continuous fibres are filaments. Silk is the only natural filament. Man-made fibres can be made as filaments (smooth and shiny) or cut into staple (softer and more cotton-like). That is why a “polyester” can feel like satin in one shop and like cotton in the next.
Why fibre matters for the tailor
- Pressing: cotton and linen take a hot iron; silk and wool need medium heat; synthetics need low heat or they melt.
- Shrinkage: plant and regenerated fibres shrink most; synthetics hardly at all.
- Needle and thread: fine silks need fine needles; knits need ballpoint needles; heavy cottons need strong thread.
- Comfort: fibres that absorb water (cotton, linen, viscose, silk, wool) feel cooler in heat and humidity than those that don’t (polyester, nylon, acrylic).
Tips for learners and teachers
- Start a swatch book. Staple a small square of every fabric you handle to a page, with its fibre, name and where you bought it. After a year you will know fabric by touch.
- Feel with your eyes closed. Natural fibres often feel cool at first touch; many synthetics feel warmer and slicker.
- Ask for the percentages. “Cotton blend” could be 90 % cotton or 20 %. The number changes how it behaves.
- Look at the ends. Pull a thread from a cut edge and untwist it. Staple fibres fluff apart; filaments stay long and smooth.
- For teachers: pass round four swatches – cotton, silk, viscose and polyester – before you name them. Let learners guess first.
Common misunderstandings
“Natural is always better.”
Not always. A polyester lining slides on easily and never shrinks; a cotton-spandex blend gives a blouse comfort that pure cotton cannot. Choose the fibre for the job.
“Viscose is a synthetic.”
Viscose is made from plant cellulose, so it behaves much more like cotton than like polyester: it absorbs sweat, burns like paper and shrinks. It is man-made, but not synthetic.
“Art silk is a kind of silk.”
“Art silk” means artificial silk. It is usually viscose or polyester. It can be lovely, but it is not silk.
“A label is always right.”
Labels can be wrong, missing or vague, especially on loose fabric sold by the metre. If something matters, test a snippet.
For earning and teaching
For earning: customers trust a tailor who can say, “This is viscose; it will shrink a little and must be pre-washed,” before they cut. It saves remakes and arguments.
For teaching: this lesson is a good first class. Four swatches, the table above and ten minutes of handling teach more than a page of notes.
Fibres in an Indian wardrobe
| Garment | Usual fibres | Why |
|---|---|---|
| Everyday kurta | Cotton, viscose (rayon), linen | Cool, absorbent, easy to wash |
| Festive saree | Silk, silk blends, polyester georgette | Sheen, drape, colour |
| Blouse lining | Cotton | Absorbs sweat, breathes |
| Lehenga lining | Polyester or viscose satin (shantoon) | Slides, holds can-can |
| School uniform | Poly-cotton | Strong, easy to iron |
| Stretch blouse, leggings | Cotton or viscose with elastane | Stretch and recovery |
| Winter shawl | Wool, acrylic, eri silk | Warmth |
When a customer brings a fabric, the first question is “What is it made of?” and the second is “What is it for?” Most fabric problems come from a mismatch between the two.
Reading a fibre label
- Percentages are listed largest first: “65 % polyester, 35 % cotton” behaves mostly like polyester.
- Trade names such as Lycra (elastane) and Tencel (lyocell) name a brand of a fibre, not a new fibre.
- “Blend”, “mix”, “semi” without numbers tell you almost nothing. Ask.
- Loose fabric by the metre often has no label at all. The bolt end or the selvedge sometimes carries the mill’s print.
- Imported garments usually carry a sewn-in label with fibre and care symbols; Indian loose fabric often doesn’t.
When there is no label, the tests in Module 6 give a good idea – never a certainty.
Sources and uncertain points
- General textile knowledge. The family names vary between books: some say “regenerated”, some “semi-synthetic”, some “man-made cellulosic”. They mean the same group.
- Kannada and Hindi names are the common market words; spellings vary.
Check yourself
- Can you name the four fibre families?
- Do you know why viscose is called semi-natural?
- Can you say which family melts under a hot iron?
- Do you know why a fibre label should show percentages?
Key terms
- Fibre: the single strand fabric is made from.
- Yarn: fibres twisted into a thread for weaving or knitting.
- Staple: short fibres; filament: long continuous fibres.
- Regenerated: made from natural material dissolved and re-spun.
- Blend: two or more fibres in one yarn or fabric.