Short for acquisition distribution layer, also called the acquisition layer or surge layer. It is typically a through-air bonded carded web of coarser bicomponent and PET fibers, or an airlaid, at roughly 20 to 60 g/m2. Its open, springy structure takes in a gush fast, holds it briefly and lets the core absorb it, which cuts leakage and rewet.
Moving the ADL from 35 to 45 gsm took rewet down by a third, but it cost us.
Also heard as
- acquisition distribution layer
- surge layer
- acquisition layer
Related terms
Topsheet
Soft, liquid-permeable nonwoven layer of a diaper or pad that touches the skin.
Through-air bonding
Thermal bonding that pulls hot air through the web so binder fibers fuse without the web being crushed.
Rewet
Amount of liquid that comes back up through a topsheet under pressure after the pad has absorbed it.
Loft
Thickness and springiness of a nonwoven, especially its ability to recover thickness after being compressed.
Backsheet
Outer, liquid-proof layer of a diaper or pad, usually breathable film laminated to a soft nonwoven.