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 Spunbond is produced in a process where polypropylene granules are melted and molten polymer is extruded through spinnerets. The continuous filaments are cooled and deposited on to a conveyor to form a uniform web. Calendering uses heat and high pressure applied through rollers to weld the fibre webs together at speed. This results in a soft, uniform material with a textile feeling.
The spunbond process has the advantage of giving nonwovens great strength, equally in wet and dry state, possibility to treat the material for liquid penetration as well as barrier properties, UV-stability, heat resistance and others.
End uses are hygiene products as well as material for furnishing, filter, automotive, building/construction and medical uses. Spunbond can be used anywhere a woven material must be used.
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