PP Spunbond Nonwoven Fabric

Spun bond fabrics are produced by depositing extruded, spun filaments into a colleting belt in a uniform random manner followed by bonding the fibre. The fibres are separated during the web laying process by air jets or electrostatic charges. The collecting surface is usually perforated to prevent the air stream from deflecting and carrying the fibres in an uncontrolled manner. Bonding imparts strength and integrity to the web by applying heated rolls or needles to par ally melt the polymer and fuse the fibres together. Since molecular orientation increases the melting point, fibres that are not highly drawn can be used as thermal binding fibres.