What Is Spunbond Nonwoven?
Direct Answer
Spunbond nonwoven is a fabric made by extruding and bonding continuous polymer filaments, used for structural layers like backsheets and covers in hygiene products.
Key Takeaways
- Spunbond nonwoven is a fabric made by extruding and bonding continuous polymer filaments, used for structural layers like backsheets and covers in hygiene products.
- How it works: Polymer pellets (usually polypropylene) are melted and extruded into continuous filaments, laid into a web, then bonded thermally.
- The soft outer cover of many diapers is a spunbond polypropylene nonwoven
- Myth: Spunbond is the same as meltblown. Spunbond uses stronger continuous filaments; meltblown uses fine fibers for filtration and softness
How Spunbond Nonwoven Works
Polymer pellets (usually polypropylene) are melted and extruded into continuous filaments, laid into a web, then bonded thermally. Spunbond is strong, uniform and cheap, making it ideal for structural layers: the diaper backsheet cover, ear tabs, and the outer layer of SMS. It is less soft than carded fabrics but provides strength and durability.
Examples and Applications
- The soft outer cover of many diapers is a spunbond polypropylene nonwoven
- Ear tabs and waist panels use spunbond for tear resistance
Spunbond Nonwoven vs. Related Terms
| Term | What it is | Key difference |
|---|---|---|
| Meltblown nonwoven | Spunbond Nonwoven | Meltblown has finer fibers for barrier/softness; spunbond is stronger and more structural |
Limitations and Common Misconceptions
- Myth: Spunbond is the same as meltblown. Spunbond uses stronger continuous filaments; meltblown uses fine fibers for filtration and softness
- Myth: Nonwovens are paper. Spunbond is plastic-based fabric, not paper
What is spunbond nonwoven used for in diapers?
Outer cover, ear tabs and structural layers that need strength and uniformity.
Is spunbond breathable?
Yes, spunbond has an open porous structure that allows air and vapor passage.
References
- EDANA - What are nonwovens? (ISO 9092 / CEN EN 29092 definition) — EDANA (accessed 2026-08-02)
- JP CIA (industry) - Baby diaper material: key components and their functions — 行业媒体 (accessed 2026-08-02)