How cotton yarn is made and sold
A spinning mill opens and cleans cotton bales, cards the fibre into a sliver and, for combed yarn, combs out short fibres. The sliver is drawn and twisted into yarn on ring frames, compact ring frames or open-end rotors, then wound onto cones. An automatic winder cuts out thick and thin places and joins the ends with a splice. Each cone carries a coloured tip or paper colour that usually codes the count.
Yarn is sold by count and by weight. The count in the English system (Ne) is the number of 840-yard hanks in one pound, so a higher number means a finer yarn. A contract usually fixes the count with a tolerance, a minimum strength, often as count strength product (CSP) or single-yarn strength, the twist, evenness figures from an Uster-type tester, and the net weight per bag or carton.
Indian exports of cotton yarn were US$3,521.73 million in FY2025-26 (IBEF, updated October 2026). Bhilwara, Ahmedabad and Kolhapur are Towns of Export Excellence for textiles; DGFT does not say which of them spin yarn for export, and mills sit in many other districts too.
What we check on cotton yarn
Most quality parameters of yarn need instruments that belong in a lab. What an inspector can do well on site is check the quantity, weight, appearance and packing of the lot and take samples properly.
| Check | How it is checked | What fails |
|---|---|---|
| Quantity and lot | Bags or cartons counted against the packing list; lot numbers and counts on bag marks traced to the contract | Short count; lots mixed in one container; wrong count on marks |
| Gross and net weight | Sampled bags weighed on a calibrated scale; tare of bag, cones and liner recorded; cones weighed one by one | Net weight below the invoiced weight; cone weights spread widely |
| Moisture | Moisture meter readings on cones from several bags, against the agreed regain | Readings above the contract figure, which means paying for water |
| Cone build | Cones examined for shape, hardness, ribbon winding, ridges, stitches, cobwebs and damaged tips | Soft or deformed cones that will not unwind cleanly at high speed |
| Contamination and colour | Cone surfaces examined in daylight; cones compared side by side for whiteness or yellowing | Coloured fibres, polypropylene strands, hair; visibly different shade between cones |
| Count identity | Cone tip colour and labels compared with the count on the bag mark and contract | Cones of another count mixed in |
| Sampling for the lab | Cones drawn at random across bags and lots, sealed and labelled in front of the supplier | Samples chosen by the mill, which proves nothing about the lot |
The lab then measures count and its variation, CSP or single-yarn strength and elongation, twist per inch, evenness, imperfections and hairiness. We check the lab report against your contract and the sealed sample numbers.
Common defects in cotton yarn shipments
| Defect | Why it matters | Class |
|---|---|---|
| Wrong count in the lot | Fabric made from it will have the wrong weight and look | Critical |
| Mould or wet cones | Shows as stains and smell; spreads in the container | Critical |
| Net weight short | Direct money loss on yarn sold by weight | Major |
| Foreign fibre contamination | Polypropylene and coloured fibres do not take dye and show in finished fabric | Major |
| Cone shade variation | Causes barré stripes in knitted or woven fabric | Major |
| Poor cone build | Breaks and sloughing on the buyer's machines | Major |
| Damaged cone tips or torn bags | Loose ends, soiling | Minor |
| Marking errors | Lots hard to trace and separate at the buyer's store | Minor |
Rules and claims for cotton yarn
Yarn is a business-to-business product and is not covered by consumer labelling laws, so the contract sets the standard. Three external points still matter:
- Organic and recycled claims. Yarn sold as GOTS or Organic Content Standard needs a valid scope certificate for the mill and a transaction certificate for the shipment, and the quantity on the certificate should match the invoice. See OEKO-TEX and GOTS.
- Cotton origin in the US. Under the Uyghur Forced Labor Prevention Act, US Customs presumes goods made wholly or partly in Xinjiang are made with forced labour. If your yarn ends up in goods for the US, ask the mill for bale purchase records showing where the cotton came from.
- Invoice and origin. Count, ply, carded or combed, and fibre content on the invoice should match the bag marks. See country of origin labelling.
Packing, transit and your purchase order
Yarn absorbs and gives off moisture. Cones packed warm and damp, or loaded in the monsoon into a container that then crosses the sea, can grow mould or pick up stains from condensation. The inspector checks that bags have liners, that cones sit tightly without crushing tips, that pallets or cartons are dry and that container walls and floor are clean and dry before loading. For high-value or moisture-sensitive lots, container loading supervision adds a check of desiccants and stowage.
Put these in your purchase order:
- Count and tolerance, carded or combed, ring, compact or open-end, single or ply.
- Minimum CSP or strength, twist, and evenness and imperfection limits, with the lab method.
- Agreed moisture regain and how net weight is invoiced.
- Cone weight, cone type and tip colour; bag or carton weight and number of cones.
- Contamination limit and any contamination-controlled claim.
- Bag marking: count, lot, bag number, gross and net weight.
- Certificates required (GOTS, OCS) and cotton origin records.
Yarn bought to be woven in India can be followed into the fabric stage: see greige fabric inspection. Book an inspection at any mill in India.