Combed, carded or ring-spun cotton: what the labels mean

“Carded” and “combed” describe how the cotton fibre is prepared before spinning. “Ring-spun”, “compact” and “open-end” describe how that prepared fibre is twisted into yarn. So they are not rival options on one scale: a yarn can be carded ring-spun, combed ring-spun, combed compact or carded open-end. Combing removes short fibres and gives a finer, smoother, softer yarn; ring and compact spinning give stronger, softer yarns than open-end, which is faster, cheaper, more even and less hairy. Only some of these claims can be proved on a fabric test report.

Two separate questions: preparation and spinning

Every cotton yarn passes through two decisions. First, how thoroughly the fibre is cleaned, straightened and sorted by length. Second, which machine twists it into yarn. Labels often mix the two, which is why “combed vs ring-spun” is such a common, and slightly confused, search.

The last row shows why the labels are independent. Cotton Incorporated has published a full trial of combed rotor yarn, spun to 40/1, precisely to test whether combing could lift an open-end yarn’s quality.

What does carding do?

Carding is the first step every cotton yarn goes through. Cotton Incorporated calls it the foundation process of yarn manufacturing: wire-covered cylinders and flats straighten, align and parallel the loose fibre and remove a significant amount of trash and dust, turning it into a rope-like strand called a sliver. Drawing then combines six to eight slivers and draws them out again, to straighten and blend the fibres further.

A yarn called carded goes from here straight to spinning. It keeps the full natural range of fibre lengths, including the short ones. That is not a defect. Carded yarn is cheaper, has a slightly drier, more textured handle, and suits many products well.

What does combing add?

Combing is an extra step after carding that removes short fibres. Cotton Incorporated says “short” usually means fibres of about half an inch or less, depending on the cotton and the comber settings. What the comber takes out is called noil; it is often recycled into less demanding yarns or nonwovens.

How much is removed depends on the mill’s settings. In Cotton Incorporated’s published trial of a fine 40/1 yarn, the comber was set to remove 15% of the sliver as noil. That lost fibre, plus an extra machine step with its own labour and energy, adds to the cost of every kilogram of combed yarn.

What you get for it, in Cotton Incorporated’s words, is the ability to spin finer yarns, with extra sheen, drape and improved hand, and fabrics that tend to be softer and more durable. It also notes that for some yarn counts and performance standards combing is an engineering requirement, while for other products it is a price-point decision. That second point is the one a buyer should hold on to: combed is not automatically worth it for every garment.

Ring-spun vs open-end: how the yarn is made

Ring spinning is the oldest and most established system. Fibre is drawn into a fine strand called roving, drafted thinner by rollers, and twisted by a spinning spindle, with a ring and traveller winding it onto a bobbin. Cotton Incorporated describes ring yarn quality as the benchmark for newer systems, with the widest count range and a hand judged second to none. It is also slow, and it needs the extra roving and winding steps, which are the main reasons ring-spun yarn costs more.

Open-end or rotor spinning skips roving. Sliver is opened into individual fibres that are collected inside a rotor spinning at high speed and pulled off as yarn. Cotton Incorporated puts its output at up to ten times that of ring spinning per spindle, notes that it does not perform well much above Ne 40/1 and is most productive below Ne 20/1, and says more than 95% of US denim yarn is rotor spun.

The two yarns behave differently. Cotton Incorporated’s technical bulletin on open-end spinning lists open-end yarn, made from the same fibre, as:

• 10% to 30% weaker than ring yarn, because its fibres lie less parallel
• more even, with higher elongation at break
• better in abrasion resistance
• less hairy: ring yarns may have as many as 90% of fibre ends protruding, open-end usually 25% or less
• bulkier, with a slightly larger diameter at the same count

Its combed rotor trial shows the gap in one pair of yarns spun from the same cotton at 40/1: the ring yarn tested at 20.62 grams per tex, the rotor yarn at 14.36. The rotor position produced 0.200 pounds of yarn an hour against the ring spindle’s 0.021.

Where does compact spinning fit?

Compact spinning is a refinement of ring spinning. A compacting device condenses the drafted strand of fibres just before it is twisted, so fewer fibre ends escape the yarn. Rieter, which builds these machines, describes the result as reduced hairiness and higher tenacity. A “compact cotton” label therefore means a ring-spun yarn, usually combed, made on this modified frame. Expect a smoother, cleaner surface and a higher yarn price.

Softness, pilling and what the labels do not promise

Pills form when short fibre ends work their way to the surface during wear and are rubbed into small balls, as University of New England textile notes explain. Weak fibres such as cotton tend to break away; stronger synthetic fibres hold on and stay visible. The same notes add that loosely twisted yarns are more prone to it. That gives the logic behind the labels: combing removes the shortest fibres, and compact spinning tucks more fibre ends into the yarn, so both reduce the raw material of pills.

But a label is not a result. Pilling also depends on fabric tightness, twist, blend and finishing, and a well-made carded fabric can outperform a loose combed one. Softness is similar: enzyme washing and softeners change the handle of any cotton, and open-end yarn, though less hairy, is not generally judged as soft as ring yarn, whose hand Cotton Incorporated rates second to none. Judge fabrics against each other in hand, and ask for a pilling result.

Yarn count basics for comparing yarns

Cotton yarn is sized by the English cotton count, written Ne. It is the number of 840-yard hanks in one pound, so the higher the number, the finer the yarn: Ne 30/1 is finer than Ne 20/1. Combed yarn is what makes the finer counts practical.

• Singles and plies. The number after the slash is the number of plies. Cotton Incorporated gives the example that Ne 48/2, two Ne 48 yarns twisted together, has the same overall size as Ne 24/1.
• Converting to tex, the metric direct system, uses tex = 590.6 ÷ Ne. So Ne 30 is about 19.7 tex and Ne 40 about 14.8 tex.
• Twist multiple links twist to count: turns per inch divided by the square root of Ne. Higher twist makes a firmer, harder yarn; lower twist a softer one.

Our fabric and GSM guide for knitwear explains how count and weight together set the feel of a jersey.

Which claims can a test report prove?

This is where buyers get caught. Some yarn claims can be measured on the finished fabric. Others can only be traced through documents.

In practice, ask the fabric mill to name the spinner and the yarn type on the fabric booking, keep the yarn lot labels with the fabric test report, and make the pilling grade and composition pass or fail items. Checking fabric before cutting is part of our quality control, and our fabric sourcing service books yarn and fabric with the documents attached.

Which should you choose?

• Promotional and event tees: carded open-end is the price choice, and the even surface prints cleanly.
• Everyday brand tees: carded or combed ring-spun, depending on your price point. Our t-shirt manufacturing page covers the jersey options.
• Premium basics, fine jersey and babywear: combed ring-spun, or combed compact for the smoothest surface.
• Heavyweight streetwear tees: often carded ring-spun, for a drier, more textured hand in thicker yarns.
• Denim: largely rotor-spun, as the US figure above shows. See our denim page.

What to do next

Tell us the product, target price and the handle you want, or send a garment whose fabric you like. We will propose the yarn, in words you can put on a fabric booking, and send swatches of the options side by side so you can feel what combing or compact spinning adds before you pay for it. Start with the quote request form.