Web formation
All nonwovens from the TWE Group are dry-laid - using either carding or an air stream
March 2018, © TWE
All nonwovens from the TWE Group are dry-laid nonwovens.
Dry-laid technology involves laying the fibres via mechanical means (carding) or an air stream (airlay).
Carded nonwovens:
Carding is a mechanical process that opens bales of staple fibre, and loosens them evenly to create a web bed.
The nonwoven can be laid in two different ways:
1. Parallel web formation: A carded web in which the fibres are laid parallel to each other. The fibres are arranged in the direction of the machine, resulting in directional properties.
2. Cross formation: The web is formed by arranging the fibres in the direction of the machine and a cross arrangement, using a device called a compensating stacker.
Nonwovens laid by an air stream:
Staple fibres which are laid via an air stream use an aerodynamic technology which conveys the fibres to a rapidly rotating roller, which uses centrifugal force to eject the fibre web from an air stream. The fibres are randomly arranged, and laid on a shaped conveyor belt.
