Spunlace nonwovens

   Spunlaced or hydroentangled has been called needlepunching with water. A fiber web is made from cards or air lay machines. This web is subjected to high water jets, and then the fibers entangle each other to form nonwovens.

   Thermobonded process includes hot-air knife process, through-air bonding process, ultrasonic bonding process, etc. The thermal fibers or powders in the web are heated to melt. After cooled, the web is transformed to nonwovens.

   Airlaid nonwovens is also known as non-dust paper or drylaid papers nonwovens. It refers to nonwovens made with equipment similar to cards where air is used to form the final web structure.

   Wet-laid process is similar to paper making. The web is formed from aqueous slurry on a wire-forming belt, and then contacted with a felt blanket causing the fibrous web to be transferred to the blanket. The felt blanket conveys the fibrous web to another forming wire for fiber entangling.

   The fiber forming polymer is extruded through a spinneret to form continuous filaments. Following formation into a suitable filament web. The web is subjected to a bonding step. It can be bonded by itself or thermobonded, chemical bonded and mechanical bonded.

   The technical process of meltblown nonwovens: polymer feed--melt and extruded--fiber forming--fiber cooling--web forming--bonded to form nonwovens.

Needle punched nonwovens

   Needlepunching is an entangling, bonding and compacting process. It is a process where needles of various configurations penetrate a given structure. Needlepunched nonwovens begin with one of the basis fiber forming processes such as carded, air laid and spunbond.

   Stitchbonded nonwovens is one of drylaid ones. Using wrap knitting loop structure, the fiber web, yarn layer, non-textile materials (e.g. plastic slice, plastic thin tinsel) or their composite is bonded together.