What Is the Difference Between Spunbond and Meltblown Nonwoven Fabric

Although both spunbond and meltblown nonwovens primarily utilize polypropylene as their raw material, they differ significantly in their manufacturing processes and application fields.

The production process for spunbond nonwovens involves melting a polymer, extruding it through a spinneret to form continuous filaments, laying these filaments down to create a web-like structure, and subsequently bonding them into a fabric using thermal or chemical methods. This type of fabric is characterized by relatively coarse fibers, resulting in exceptionally high tensile strength and excellent flexibility. Furthermore, its low production costs and massive production capacity have led to its widespread application in areas such as agricultural covers, geotextiles, furniture linings, shopping bags, and protective clothing.

In contrast, the manufacturing principle behind meltblown nonwovens involves melting a polymer and extruding it through a die head, after which high-velocity hot air streams are used to attenuate the material into ultrafine fibers; these fibers then bond with one another to ultimately form a fibrous web. It is precisely these extremely fine fibers that endow the material with superior filtration and barrier properties; consequently, it is frequently utilized in medical masks (such as N95 and KN95), air and liquid filtration media, and as the core layer material in hygiene products (such as diapers and sanitary pads).

In summary, spunbond nonwovens excel in durability and cost-effectiveness, making them the ideal choice for applications requiring high mechanical strength, whereas meltblown nonwovens are renowned for their fine filtration capabilities and protective performance. The ultimate choice between these two materials depends on your specific requirements—specifically, whether you prioritize the material's strength and breathability, or its highly efficient particulate filtration capabilities.