In the spunbond technology, usually, a thermoplastic fibre forming the polymer is extruded to form fine filaments fibres of around 15–35-micrometre diameter. The attenuated filaments are collected on a conveyor belt in the form of a web. The filaments in the web are then bonded to make spunbond nonwoven fabric. Spunbond technology uses preferably thermoplastic polymers with high molecular weight and broad molecular weight distribution such as polypropylene (PP) and polyester (PET). To a small extent, other polyolefins, as well as a variety of polyamides (PA), are used. Among various polymers, isotactic polypropylene (PP) is the most widely used