A batt has enough weight and thickness that it is handled as a mat rather than a film-like web, typically from about 100 g/m2 up to several kilograms per square meter. Cross-lappers fold a light card web back and forth to build its weight and width before a needle loom or oven consolidates it. The word also covers loose fiber fill sold for quilting and padding.
Batt is coming off the lapper heavy on the edges, so the felt will be thin in the middle.
Also heard as
- batting
- lap
Related terms
Web
Thin layer of fibers or filaments made in the first stage of nonwoven production, before or after bonding.
Cross-lapper
Machine that lays a light card web back and forth across a slower conveyor to build a wider, heavier batt.
Needlepunch
Mechanical bonding in which barbed needles punch repeatedly through a batt, dragging fibers through and tangling it.
Highloft
Low-density, thick nonwoven made for bulk and trapped air rather than strength, such as fiberfill and padding.