Buyers often pick a fleece or plush fabric purely by the name and the GSM, then wonder later why the hand feel, the shedding, or the wash performance is not what they expected. The answer is usually the finishing process. A fleece fabric is a knitted polyester base, but it only becomes the soft, fluffy, warm surface you sell after a series of mechanical and thermal finishing steps. Understand those steps and you can compare mills, read a spec sheet, and ask the right questions — instead of gambling on the product name alone.
The finishing line, step by step
After the polyester yarn is knitted into a flat, smooth base, the fabric moves through a finishing line. The exact sequence varies by mill and by fabric type, but for plush and fleece products the core steps are:
- Brushing / napping (起毛). The fabric passes over rotating rollers fitted with fine wire points that catch individual fiber ends and lift them out of the yarn to form a raised pile. This is what creates the signature soft, fluffy touch and the insulating air trapped in the pile.
- Shearing (剪毛). The raised pile is trimmed with rotary blades to a consistent height, typically a few millimeters for fleece. Shearing is what makes the surface look even and uniform across the width — without it, the nap height varies and the fabric looks patchy.
- Heat-setting (定型). The fabric is passed through a stenter frame at high temperature so the structure holds its dimensions and the raised fibers are fixed in place. This is the step that stops the fabric from shrinking, creasing, or losing its loft after washing.
- Finishing treatments. Softeners improve the hand feel, and anti-pilling treatments reduce surface fuzz and fiber tangle during washing. Durable water-repellent or anti-static finishes may also be applied for specific end uses.
The softness-versus-pilling tradeoff every buyer should know
Here is the point that trips up most buyers: brushing makes fabric softer, but the very fiber ends that create the soft pile are also the material from which pills form. A heavily brushed fleece will feel wonderful in your hand yet pill faster in use. That is not a defect — it is the physics of a raised pile.
Quality mills manage this balance in two ways. First, shearing after brushing trims the longest, most mobile fiber ends, which partly recovers the pilling performance that brushing cost. Second, an anti-pilling finish reduces the free fiber ends on the surface — which is, in effect, the opposite of brushing, so it must be tuned carefully or it can dull the softness you are paying for.
This is why two rolls with the same name and same GSM can feel and perform very differently. Compare the full chain — fiber fineness, pile density, shearing uniformity, and whether the fabric is heat-set and anti-pill treated — rather than the label alone.
Heat-setting matters more than it looks
Heat-setting is easy to overlook because you cannot see it, but it is often the difference between a blanket that keeps its shape for years and one that shrinks, curls, or goes flat after a few washes. Without proper heat-setting, the fibers are not fixed and the structure relaxes — the loft collapses and the dimensions drift. For polyester fleece, heat-setting is typically carried out well above 150°C on a stenter frame, with temperature and dwell time controlled closely across the width.
When a mill skips or rushes this step to cut cost, the finished goods buyer pays for it downstream in returns and bad reviews.
What to ask your fleece fabric mill
- Is the fabric heat-set? Confirm it has been through a stenter frame, not only washed and dried.
- Is the pile sheared to a uniform height? Uniform shearing is the difference between a smooth surface and a patchy one.
- Is an anti-pilling treatment applied? Ask whether the finish was chosen to protect the hand feel, and request a pilling test result for the specific lot (a common standard is ISO 12945-2).
- Do you run a shedding test? A short-pile, well-heat-set fleece sheds far less lint than a cheap long-pile one; ask if the mill has a shedding or weight-loss figure for the lot.
- Can I see a made-up sample, not just a swatch? Hand feel, pile density and shearing quality only show up reliably on a finished sample in the exact construction you plan to order.
Finishing is where value is decided
Raw production cost is only part of the story; finishing is where the perceived quality — softness, evenness, wash stability — is actually created. A slightly higher price per meter that includes disciplined heat-setting and a balanced anti-pill treatment usually saves more in returns and customer satisfaction than a cheap roll that looks good for a week.
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References
- TextileTuts — What Is Fleece Fabric? Types, Properties and Uses (fleece manufacturing: napping, shearing to uniform height, anti-pill treatment and heat-setting)
- Muxi Towel — How Does Coral Fleece Get Its Soft and Fluffy Texture? (raising, shearing, heat-setting and the quality indicators buyers should compare)
- Jinchen Group — What Is Fleece Fabric Made Of? (extrusion, knitting, napping, shearing, finishing and anti-pilling route)