Spunlaid processes extrude filaments through a spinneret, draw them with air and lay them straight onto a moving belt, so the web is built from unbroken strands. A continuous filament web is stronger at a given weight than a carded staple web because there are no fiber ends to pull out. Hygiene spunbond filaments typically sit around 1.5 to 2.5 denier.
Filament denier is creeping up on beam two, so the coverage is getting blotchy at 10 gsm.
Also heard as
- continuous filament
- CF
Related terms
Spunbond
Nonwoven of continuous filaments extruded, air-drawn and laid on a belt, then usually bonded by a hot calender.
Staple fiber
Fibers cut to a fixed, finite length, as opposed to continuous filament, used in carded, airlaid and wetlaid webs.
Denier
Unit of fiber fineness equal to the mass in grams of 9,000 meters of fiber or filament.
Spinneret
Metal plate drilled with many small holes through which molten polymer is extruded into filaments.