To know a products which is better to know the production process first.
chips are introduced into an extruder which produces continuous filaments that
are cooled and stretched to by air and give them strength. The filaments are random laied on
a moving belt to form a web that is then thermally bonded by hot calender between two
temperature controlled steel rolls to wind it into rolls. Some bonding rolls have a pattern that
is embossed into the web. Spunbonds are typically made from homopolymers such
as polypropylene, polyester, polyethylene, PLA or nylon. Some spunbonds are
made from two polymer families creating a bi-component fabric. Such as PE/PP and PE/PET sheath-core bicomponent spunbond non woven materials.