(Picture by Trützschler Nonwovens, AquaJet)

Hydroentanglement is mainly applied to carded or wetlaid webs and uses fine, high pressure jets of water to cause the fibres to interlace. Hydroentanglement is sometimes known as spunlacing, as the arrangement of jets can give a wide variety of aesthetically pleasing effects. The water jet pressure used has a direct bearing on the strength of the web, but system design also plays a part.