Airlaid vs Spunlace: Choosing the Right Nonwoven

Airlaid and spunlace are both nonwovens, both white, both sold by the tonne — and they are not substitutes. The confusion is understandable: a folded napkin and a dry wipe look similar in a sample bag. On a converting line at 200 m/min they behave nothing alike.

The difference is in how the web is made

Airlaid is a dry-formed web. Wood pulp is defibrated, blown into a forming head and deposited onto a moving wire; a binder — latex, or bicomponent fibre fused by heat — holds the short pulp fibres together. The result is a low-density, high-bulk sheet built from fibres 2–4 mm long.

Spunlace (hydroentangled) starts as a carded or wet-laid web of longer staple fibres — usually viscose and polyester, sometimes cotton or pulp blends — and is bonded by high-pressure water jets that entangle the fibres mechanically. No chemical binder is needed; the strength comes from fibre friction and entanglement.

That single difference in bonding explains almost every performance difference downstream.

Performance comparison

Cost: the comparison buyers get wrong

Spunlace is generally the more expensive web per tonne, because viscose and polyester cost more than fluff pulp and the hydroentanglement line consumes a great deal of water and energy. Indicatively, white latex-bonded airlaid trades well below spunlace of comparable weight; the gap narrows for pulp-polyester spunlace blends.

But price per tonne is the wrong metric for both. Compare cost per finished piece: because airlaid delivers bulk and absorption at low grammage, a 55 gsm airlaid napkin can outperform an 80 gsm spunlace napkin on hand feel while using 30% less material. Do the maths on the finished unit, then add converting waste.

Compare cost per finished piece, not cost per tonne. A 55 gsm airlaid napkin can beat an 80 gsm spunlace napkin on hand feel while using 30% less material.The only comparison that matters

Where each one wins

Choose airlaid when you need

• Absorption capacity and bulk at low weight — napkins, table linen, underpads, food pads, hygiene cores.
• A soft, dry hand feel and a crisp fold that holds on a table.
• Deep embossing — point-to-point or overall patterns that survive folding.
• Compostability or a high bio-based content.

Choose spunlace when you need

• Wet strength — wet wipes, medical wipes, masks, cosmetic pads.
• Textile drape and a cloth-like feel.
• Low lint in a cleanroom or clinical environment.
• Fine print and colour reproduction.

Use both, laminated

Premium wet wipes are frequently an airlaid core laminated to a spunlace face: the airlaid holds the lotion and gives thickness, the spunlace gives the outside strength and the cloth-like surface. If a supplier offers you only one technology, they are describing their machine, not your product.

Converting behaviour — the part samples never show

Airlaid is a short-fibre web, so it dusts more than spunlace if the edges are not trimmed cleanly; keep the trim knife sharp and the web tension stable. Airlaid also stretches slightly under tension, which matters on a print unit where registration drifts. Spunlace is more dimensionally stable but has a springier memory — it resists embossing and can curl after folding if the web is unbalanced.

Neither material is difficult. They simply require the machine to be set for them, which is why a 100 m pilot run beats any datasheet.

Four claims worth correcting

• “Airlaid is paper.” It is a nonwoven made from wood pulp. No wet-laid sheet, no hydrogen bonding — the binder does the work.
• “Spunlace is always stronger when wet.” Usually, but a heavily latex-bonded airlaid will out-perform a lightly bonded spunlace in a soak test.
• “Airlaid is cheaper, so it is the budget option.” At equal performance airlaid is often cheaper; at equal weight it is a different product entirely.
• “They are interchangeable if the gsm matches.” They are not. Bulk, drape, wet strength and emboss definition all differ at identical grammage.