Characteristics and Advantages of Nonwoven Fabric

　　A key reason for the rapid development of spunbond technology is its use of synthetic polymers as raw materials. Drawing on the principles of synthetic fiber spinning, this process produces continuous filaments during polymer extrusion; after jet‑spinning and web formation, the fibers are directly bonded to create nonwoven fabric. The manufacturing method is remarkably simple and fast. Compared with dry‑laid nonwoven processes, it eliminates a series of cumbersome intermediate steps—such as fiber crimping, cutting, baling, transportation, blending, and carding. This continuous, large‑scale production significantly reduces costs, ensures stable quality, and enhances market competitiveness, enabling spunbond products to penetrate markets traditionally dominated by textiles, paper, and films across both disposable and durable applications. Furthermore, because spunbond nonwovens rely heavily on polypropylene as their primary feedstock, they enjoy substantial advantages in terms of cost, processing efficiency, and production expenses, which have strongly propelled the sustained growth of the spunbond industry. In addition, spunbond nonwovens exhibit excellent mechanical properties, with superior tensile strength, elongation at break, and tear resistance compared to dry‑laid, wet‑laid, and meltblown nonwovens. Particularly in recent years, rapid advances in production line scale, technology, equipment, and market expansion have greatly broadened the range of applications for spunbond nonwovens.

　　The most significant difference between the spunbond process and conventional synthetic fiber spinning lies in its use of air‑assisted drawing and direct web formation. Consequently, draw‑down has become a central technical challenge in spunbond technology. Traditionally, mechanical drawing was employed, resulting in relatively thick filaments and uneven web formation. Today, spunbond production lines worldwide have adopted air‑assisted drawing. Due to variations in the air‑drawing method, three distinct configurations have emerged: tubular‑draw, wide‑slot‑draw, and narrow‑slot‑draw.

　　Spunbond nonwoven technology has consistently focused on enhancing production-line capacity and addressing issues such as nonwoven uniformity, opacity, and a coarse hand feel, with the aim of improving the spunbond nonwoven’s tensile strength, softness, uniformity, as well as its comfort and moisture‑absorption properties.

　　Fine-denier spunbond nonwovens can directly address issues such as softness and comfort in conventional spunbond nonwovens. However, fine‑denier spinning faces technical challenges: while it increases the number of fibers per unit area, it also raises the density of fiber–fiber bonding points, resulting in a more uniform product with improved coverage.