Chapter 17, Nonwovens (Fiberwebs) made from fibers.

  Nonwovens are capturing a large share of the disposable market (diapers, surgical gowns, cleaning cloths (Swiffer, etc), Handi-wipes.

     Nonwoven fabrics are usually "made from extruded filaments or from fiber webs or batts
     strengthened by bonding using various techniques; these include adhesive bonding,
     mechanical interlocking by needling or fluid jet entanglement, thermal bonding, and stitch
     bonding."

     Nonwoven fabrics are made by bonding the fibers either by heat, moisture and heat, an
     adhesive, or a combination.
     nonwoven fabrics are usually more stiff than woven or knitted fabrics.Often they are used for
     stabilization or for disposable products.

     Dry-laid nonwovens -nonwovens containing layers of fibers, each layer containing randomly
     positioned or parallel fibers.  Bonding with an adhesive or heat is necessary.
     Wet-laid nonwovens - paper-like nonwovens containing a random array of layered fibers,
     with the layering resulting from the deposition of fibers from a water slurry.

     Needlepunched nonwovens are characterized by the entangled condition of fibers of which
     they are composed, with the entnaglement resulting from the application of heat, moisture
     and agitation to a fibrous web.

     Spunlaced nonwovens have fibers entangled by action of high-velocity water jets.